JP7512739B2 - Laminated plate, movable body, and method for manufacturing laminated plate - Google Patents

Description

The present invention relates to a sheet with a conductor that is provided on the window glass of a moving object, a laminated plate that includes this sheet with a conductor, a moving object that includes these, a method for manufacturing the sheet with a conductor, and a method for manufacturing the laminated plate.

Conventionally, laminated plates having a sheet with a conductor have been widely used. The sheet with a conductor has a pattern conductor. The laminated plate having a sheet with a conductor is used, for example, in a defroster (defrosting device) used for the window glass of a moving body such as a vehicle. In such a defroster, a current is passed through the pattern conductor via a pair of strip-shaped electrodes (called a bus bar) to generate resistance heating in the pattern conductor, and the generated resistance heating is used to heat the laminated plate (for example, Patent Documents 1 and 2). The laminated plate applied to the window glass of a vehicle can ensure the visibility of the occupants by removing fog from the window glass, melting snow and ice attached to the window glass, or evaporating water droplets attached to the window glass using the heat generated by the pattern conductor.

JP 2013-173402 A Japanese Patent Application Laid-Open No. 8-72674

In conventional laminated plates such as the front window of a moving body, a single conductive sheet having a size corresponding to the area of the front window is provided between the laminated plates, and this single conductive sheet is used to heat the entire area of the laminated plate such as the front window that ensures visibility for occupants.
However, in order to manufacture a single conductor-equipped sheet having a size corresponding to the area of the front window, a production line capable of handling large sizes (large areas) is required, resulting in high production costs.
Furthermore, the larger the area, the greater the number of pattern conductors arranged on a single conductor-equipped sheet; however, if even one of the pattern conductors on the conductor-equipped sheet is broken, the entire conductor-equipped sheet becomes defective, posing a problem in terms of yield.

The present invention was made in consideration of these points, and its main objective is to provide a sheet with a conductor that can reduce costs and improve yields.

The sheet with conductor of the present invention comprises a substrate, a pattern conductor arranged on one surface of the substrate, and a pair of bus bars connected to the pattern conductor and constituting an anode and a cathode, the pattern conductors being arranged in parallel in the left-right direction, the anode and the cathode of the pair of bus bars being arranged in the up-down direction so as to face each other across the pattern conductor, marks being formed on the anode and the cathode of the pair of bus bars, and the mark formed on the anode and the mark formed on the cathode being formed in positions facing each other in the up-down direction.

In the conductor-attached sheet of the present invention, the mark may be formed on one end in the same direction as the anode and cathode extend.

In the conductor-attached sheet of the present invention, the marks may be formed on both end portions of the anode and cathode in the direction in which they extend.

In the sheet with conductor of the present invention, the distance between the end face of the substrate on the side of the end on which the mark is formed and the pattern conductor closest to the end face may be half the distance between the pattern conductors arranged in parallel when viewed in a plan view.

The laminate of the present invention comprises the sheet with conductors, a first transparent substrate, a second transparent substrate, and a bonding layer, the first transparent substrate being located on the opposite side of the sheet with conductors from the one surface of the substrate on which the patterned conductors are arranged, the second transparent substrate being located on the side of the sheet with conductors from the one surface of the substrate on which the patterned conductors are arranged, and the bonding layer being located between the sheet with conductors and the second transparent substrate.

In the laminate of the present invention, two sheets with conductors are arranged adjacent to each other on the left and right sides, the spacing between the pattern conductors arranged in parallel on the left sheet of the two adjacent sheets with conductors is the same as the spacing between the pattern conductors arranged in parallel on the right sheet of the two adjacent sheets with conductors, and the spacing between the pattern conductor arranged closest to the right sheet of the left sheet of the two adjacent sheets with conductors and the pattern conductor arranged closest to the left sheet of the right sheet of the two adjacent sheets with conductors may be the same as the spacing between the pattern conductors arranged in parallel on each of the two adjacent sheets with conductors.

The moving body of the present invention is equipped with the conductive sheet.

The moving body of the present invention is equipped with the above-mentioned mating plate.

The method for manufacturing a sheet with conductors of the present invention includes the steps of: preparing a sheet with conductors, the sheet including a substrate, a patterned conductor disposed on one surface of the substrate, and a pair of bus bars connected to the patterned conductors and constituting an anode and a cathode, the patterned conductors being arranged in parallel in the left-right direction, the anode and the cathode of the pair of bus bars being arranged in the up-down direction so as to face each other across the patterned conductor, the anode and the cathode of the pair of bus bars each having a mark formed thereon, the mark formed on the anode and the mark formed on the cathode being formed at positions facing each other in the up-down direction, and cutting the sheet with conductors in a direction parallel to the direction in which the patterned conductors extend at a common position between the mark formed on the anode and the mark formed on the cathode.

In the method for manufacturing a sheet with conductors of the present invention, the center of the mark formed on the anode and the center of the mark formed on the cathode are located on a line passing through the center of the spacing between the pattern conductors arranged in parallel, and the step of cutting the sheet with conductors in a direction parallel to the direction in which the pattern conductors extend at a common position between the mark formed on the anode and the mark formed on the cathode may be a step of cutting the sheet with conductors on a line passing through the center of the mark formed on the anode and the center of the mark formed on the cathode.

The method for manufacturing a laminate of the present invention includes the steps of preparing a plurality of sheets with conductors manufactured by the manufacturing method for sheets with conductors, and arranging the plurality of sheets with conductors adjacent to each other, and the step of arranging the plurality of sheets with conductors adjacent to each other includes the step of aligning the sheets with conductors using the portion of the mark remaining on the sheets with conductors.

The present invention makes it possible to provide conductive sheets and the like that can reduce costs and improve yields.

FIG. 1 is a diagram showing a moving body equipped with a conductor-attached sheet according to the present invention; FIG. 1 is a plan view showing an example of an arrangement of a sheet with conductors according to a first embodiment of the present invention; FIG. 3 is a diagram showing a sheet with a conductor constituting the arrangement shown in FIG. 2 . FIG. 4 is a diagram illustrating the conductor-attached sheet shown in FIG. 3 . FIG. 11 is a plan view showing an example of an arrangement of a sheet with conductors according to a second embodiment of the present invention; FIG. 6 is a diagram showing a sheet with a conductor constituting the arrangement shown in FIG. 5 . FIG. 7 is a diagram illustrating the conductor-attached sheet shown in FIG. 6 . FIG. 11 is a plan view showing an example of an arrangement of a sheet with conductors according to a third embodiment of the present invention; FIG. 9 is a diagram for explaining a sheet with a conductor constituting the arrangement shown in FIG. 8 . FIG. 13 is a plan view showing an example of an arrangement of a sheet with conductors according to a fourth embodiment of the present invention; FIG. 1 is a cross-sectional view showing an example of a cross-sectional configuration of a sheet with a conductor according to the present invention. FIG. 1 is a cross-sectional view showing an example of a cross-sectional configuration of a laminate according to the present invention. FIG. 1 is a diagram showing an example of a method for producing a sheet with a conductor according to the present invention. 1 is a diagram showing an example of a method for manufacturing a laminate according to the present invention;

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that in the drawings attached to this specification, the scale and aspect ratios have been appropriately altered and exaggerated from those of the actual objects for the convenience of illustration and ease of understanding.

In this specification, the terms "plate," "sheet," and "film" are not distinguished from one another solely on the basis of differences in names. For example, a "sheet with conductors" is a concept that includes members that can be called plates or films, and therefore a "sheet with conductors" cannot be distinguished from members called "plates (substrates) with conductors" or "films with conductors" solely on the basis of differences in names.

In addition, terms used in this specification that specify shapes, geometric conditions, and the extent of those conditions, such as "rectangle," "trapezoid," "ellipse," "plate," "plane," "parallel," "orthogonal," "same," "identical," and other terms, as well as values of lengths and angles, are to be interpreted without being bound by strict meanings, but rather to include the range within which similar functions can be expected.

(Mobile)
FIG. 1 is a diagram showing an example of a moving object equipped with a conductor-attached sheet according to the present invention.
1 shows a sedan-type passenger car as an example, and has a front window 2 as a window glass. The window glass of the front window 2 is a laminated plate, and although not shown, this laminated plate is provided with a sheet with a conductor. The mobile object 1 also has a power source 3 such as a battery, and the power source 3 can cause a current to flow to each pattern conductor arranged on the conductor sheet provided on the laminated plate of the front window 2.

(Arrangement of Conductor-Attached Sheet)
In the present invention, multiple small-area sheets with conductors are arranged in a multi-faced manner for an area that requires heating. Therefore, the area of one sheet with conductors can be small, and a production line for large sizes (large areas) is not required, so that production costs can be kept low. In addition, since the area of one sheet with conductors is small, the number of pattern conductors arranged on one sheet with conductors can be small, and therefore the risk of disconnection of the pattern conductors is lower than with a sheet with conductors having a large area, and the yield can be improved. Furthermore, since the area of one sheet with conductors is small, handling and transportation are easier than with a sheet with conductors having a large area.
The arrangement of the conductor-attached sheet according to the present invention will be described in detail below.

First Embodiment
Fig. 2 is a plan view showing an example of a first embodiment of an arrangement of a sheet with conductors according to the present invention. Fig. 3 is a diagram showing a sheet with conductors constituting the arrangement shown in Fig. 2. Fig. 4 is a diagram for explaining the sheet with conductors shown in Fig. 3.

In the example shown in FIG. 2, the conductor-attached sheet 10L and the conductor-attached sheet 10R are arranged adjacent to each other on the left and right, and the area of the conductor-attached sheet 10L and the conductor-attached sheet 10R is heated.
More specifically, the conductor-attached sheet 10L includes a substrate 11, a patterned conductor 12 arranged on one surface of the substrate 11, and a pair of bus bars 13 that are connected to the patterned conductor 12 and form an anode 13U and a cathode 13D. The patterned conductors 12 are arranged in parallel in the left-right direction at a fixed interval (SW1).
Similarly, the conductor-attached sheet 10R also includes a substrate 11, a patterned conductor 12 arranged on one surface of the substrate 11, and a pair of bus bars 13 that are connected to the patterned conductor 12 and form an anode 13U and a cathode 13D. The patterned conductors 12 are arranged in parallel in the left-right direction at a fixed interval (SW2).

Here, it is preferable that the spacing (SW1) between the pattern conductors 12 arranged in parallel in the sheet with conductors 10L and the spacing (SW2) between the pattern conductors 12 arranged in parallel in the sheet with conductors 10R are the same, and that the spacing (SW3) between the pattern conductor 12 arranged in the position closest to the sheet with conductors 10R in the sheet with conductors 10L and the pattern conductor 12 arranged in the position closest to the sheet with conductors 10L in the sheet with conductors 10R is the same as the spacing (SW1) and spacing (SW2). That is, it is preferable that the spacing (SW1), spacing (SW2), and spacing (SW3) shown in FIG. 2 are SW1=SW2=SW3.
This is because even in a multi-faceted arrangement, the entire multi-faceted area can be heated uniformly.

More specifically, if the spacing between the pattern conductors 12 is as described above, in the arrangement shown in FIG. 2, the pattern conductors 12 are arranged in parallel at equal intervals from the leftmost pattern conductor 12 of the conductor-attached sheet 10L on the left side of the figure to the rightmost pattern conductor 12 of the conductor-attached sheet 10R on the right side of the figure. Therefore, if the heat generation of each pattern conductor 12 is the same, the area where the pattern conductors 12 are arranged in parallel will be heated uniformly.

To enable the above-mentioned arrangement, the conductor-attached sheets 10L and 10R are provided with marks that act as alignment marks.
The mark is provided on a pair of bus bars. Therefore, no additional area is required on the surface of the base material 11 for providing the mark. Furthermore, the bus bars are usually arranged so as to overlap a colored layer provided on the front window 2 or the like in order to prevent a loss of design due to being observed by occupants of the moving body. Therefore, the mark provided on the bus bars is also not observed by occupants of the moving body, and a loss of design can be prevented.
This mark can be formed by the same method as the method for forming the outer shapes of the anode and cathode of the pair of bus bars when forming the pair of bus bars. For example, it can be formed by patterning the metal film for forming the anode and cathode of the pair of bus bars using a known photolithography technique. Therefore, there is no need to add an additional process for forming the mark.

For example, as shown in Figures 2 and 3, in the conductor-attached sheets 10L and 10R, the pattern conductors 12 are arranged in parallel in the left-right direction, and the anode 13U and cathode 13D of a pair of bus bars 13 are arranged in the up-down direction so as to face each other across the pattern conductor 12.
Then, a mark acting as an alignment mark is formed on one side end in the same direction in which the anode 13U and the cathode 13D extend. More specifically, in the conductor-attached sheet 10L, a mark HMRU is formed on the right end of the anode 13U, and a mark HMRD is formed on the right end of the cathode 13D. Similarly, in the conductor-attached sheet 10R, a mark HMLU is formed on the left end of the anode 13U, and a mark HMLD is formed on the left end of the cathode 13D.

In the example shown in Figures 2 and 3, the mark HMRU that the conductor-attached sheet 10L has at the right end of its anode 13U, and the mark HMLU that the conductor-attached sheet 10R has at the left end of its anode 13U originally formed the form of an integrated cross-shaped mark.
Similarly, the mark HMRD that the conductor-attached sheet 10L has at the right end of its cathode 13D, and the mark HMLD that the conductor-attached sheet 10R has at the left end of its anode 13U originally formed an integrated cross-shaped mark.

Figure 4 is a diagram explaining the sheet with conductors shown in Figure 3. For example, to obtain the sheet with conductors 10L shown in Figure 3, first, a sheet with conductors 10 having a cross-shaped mark is prepared as shown in Figure 4(a). Then, the sheet with conductors 10 is cut along a line passing through the center positions of two cross-shaped marks that face each other in the vertical direction of the sheet with conductors 10, to obtain the sheet with conductors 10L as shown in Figure 4(b).

The above will be described in more detail. First, in the conductor-attached sheet 10 shown in Fig. 4(a), the pattern conductors 12 are arranged in parallel in the left-right direction, and the anode 13U and the cathode 13D of a pair of bus bars 13 are arranged in the up-down direction so as to face each other with the pattern conductor 12 therebetween.
A cross-shaped mark MRU is formed near the right end of the anode 13U, and a cross-shaped mark MLU is formed near the left end of the anode 13U. A cross-shaped mark MRD is formed near the right end of the cathode 13D, and a cross-shaped mark MLD is formed near the left end of the cathode 13D.

Here, the mark MRU and the mark MRD are formed at specific positions facing each other in the up-down direction.
More specifically, as shown in FIG. 4(a), the center of mark MRU and the center of mark MRD are located on a line (VL1) which is a virtual line parallel to the extension direction of the pattern conductors 12 and passes through the center of the space between the pattern conductor 12 (pattern conductor 12a) located at the rightmost side of the conductor-attached sheet 10 and the pattern conductor 12 (pattern conductor 12b) located next to this rightmost pattern conductor 12 (pattern conductor 12a).

Then, the sheet 10 with conductors is cut along a line (VL1) passing through the center of the mark MRU and the center of the mark MRD, thereby obtaining a sheet 10L with conductors as shown in FIG. 4(b).
By this cutting, the cross-shaped mark MRU of the conductor-formed sheet 10 is cut in half to become the mark HMRU of the conductor-formed sheet 10L. Similarly, the cross-shaped mark MRD of the conductor-formed sheet 10 is cut in half to become the mark HMRD of the conductor-formed sheet 10L.

The above cutting also forms an edge surface CS1, which is a cut surface, on the substrate 11 of the sheet with conductors 10L. In a plan view, the distance between this edge surface CS1 and the pattern conductor 12b closest to this edge surface CS1 (more precisely, the distance between the edge of the pattern conductor 12b on the edge surface CS1 side) is half the distance (SW1 shown in FIG. 2) between the pattern conductors 12 arranged in parallel on the sheet with conductors 10L.

In the manner described above, the sheet with conductor 10L shown in FIG. 4(b) can be obtained from the sheet with conductor 10 shown in FIG. 4(a).

Although not shown in the figure, similarly, the conductor-attached sheet 10R shown in Figure 3 can be obtained by cutting the conductor-attached sheet 10 along a line passing through the center of the mark MLU on the left side of the conductor-attached sheet 10 shown in Figure 4 (a) and the center position of the mark MLD.
In addition, in the conductor-attached sheet 10 shown in FIG. 4(a), the marks MLU and MLD are also formed at positions opposing each other in the up-down direction, similar to the relationship between the marks MRU and MRD.

Then, by aligning and arranging the obtained conductor-attached sheet 10L and conductor-attached sheet 10R adjacent to each other as shown in FIG. 2, it is possible to arrange the pattern conductors 12 in parallel at equal intervals from the pattern conductor 12 at the left end of the conductor-attached sheet 10L on the left side of the figure to the pattern conductor 12 at the right end of the conductor-attached sheet 10R on the right side of the figure, as described above.

In the process of aligning and positioning the conductor-equipped sheets 10L and 10R adjacent to each other, the above-mentioned marks HMRU, HMLU, HMRD, and HMLD can be used to align them.

For example, a method can be used in which a specific position (e.g., the center position) of the mark HMRU at the upper right end of the conductor-included sheet 10L is aligned with a specific position (e.g., the center position) of the mark HMLU at the upper left end of the conductor-included sheet 10R, and a specific position (e.g., the center position) of the mark HMRD at the lower right end of the conductor-included sheet 10L is aligned with a specific position (e.g., the center position) of the mark HMLD at the lower left end of the conductor-included sheet 10R, so that the cut surface of the conductor-included sheet 10L (more specifically, the cut surface of the base material 11 of the conductor-included sheet 10L) and the cut surface of the conductor-included sheet 10R (more specifically, the cut surface of the base material 11 of the conductor-included sheet 10R) are in contact with each other.

By using such a method, it is possible to arrange the pattern conductors 12 in parallel at equal intervals, as shown in FIG. 2, from the pattern conductor 12 at the left end of the conductor-attached sheet 10L on the left side of the figure to the pattern conductor 12 at the right end of the conductor-attached sheet 10R on the right side of the figure.
It is also possible to prevent gaps from occurring between the cut surfaces of the conductor-attached sheets 10L and 10R, and to prevent the base material 11 of the conductor-attached sheets 10L and the base material 11 of the conductor-attached sheets 10R from overlapping. This makes the seam between the conductor-attached sheets 10L and 10R (the portion where the cut surfaces of each sheet come into contact) less noticeable.

In the examples shown in Figures 2 to 4, a mark (e.g., mark HMRU) used for alignment when arranging conductor-equipped sheets 10L and conductor-equipped sheets 10R adjacent to each other is shown as an example of a cross-shaped mark cut along a center line that is symmetrical on both sides, but the shape of the mark according to the present invention is not limited to this. The shape of the mark according to the present invention may be any shape that can act as an alignment mark as described above, and examples of such shapes include various polygonal shapes and shapes with curves. The same applies to the other embodiments that follow.

Second Embodiment
In the arrangement shown in Fig. 2 described above, the two conductor-attached sheets 10L and 10R constituting this arrangement can both be manufactured from one type of conductor-attached sheet 10 shown in Fig. 4. Therefore, manufacturing costs can be further reduced compared to the case where multiple types of conductor-attached sheets are prepared.

However, in the present invention, the conductor-equipped sheet arranged on the left side and the conductor-equipped sheet arranged on the right side may be manufactured from different types of conductor-equipped sheets. In this case, the freedom of the conductor-equipped sheet shape that can be selected increases, making it possible to select a shape that is more suitable for the shape of the windshield, etc.

In this case, too, the area of a single sheet with conductors can be small, eliminating the need for a production line capable of handling large sizes (large areas), and making it possible to keep production costs low. In addition, because the area of a single sheet with conductors is small, the number of pattern conductors arranged on a single sheet with conductors can be reduced, and therefore the risk of breakage of the pattern conductors is lower than with a sheet with conductors having a large area, and yields can be improved. Furthermore, because the area of a single sheet with conductors is small, handling and transportation are easier than with a sheet with conductors having a large area.

Figure 5 is a plan view showing an example of a second embodiment of the arrangement of a sheet with conductors according to the present invention. Also, Figure 6 is a diagram showing a sheet with conductors constituting the arrangement shown in Figure 5. Also, Figure 7 is a diagram explaining the sheet with conductors shown in Figure 6.

In the example shown in FIG. 5, the conductor-attached sheet 20L and the conductor-attached sheet 20R are disposed adjacent to each other, and the area of the conductor-attached sheet 20L and the conductor-attached sheet 20R is heated.
The conductor-attached sheet 20L and the conductor-attached sheet 20R each have a different shape; for example, the shape of the pair of bus bars 23L of the conductor-attached sheet 20L (particularly, the shape of the anode 23LU on the upper side in the figure) is different from the shape of the pair of bus bars 23R of the conductor-attached sheet 20R (particularly, the shape of the anode 23RU on the upper side in the figure).
Furthermore, the cross-shaped marks MLU and MLD of the conductor sheet 10L shown in Figure 2 are not formed near the left ends of the pair of bus bars 23L of the conductor sheet 20L, and similarly, the cross-shaped marks MLU and MLD of the conductor sheet 10L shown in Figure 2 are not formed near the left ends of the pair of bus bars 23R of the conductor sheet 20R.

However, the conductor-attached sheets 20L and 20R shown in Figures 5 and 6 also have marks that function as alignment marks, similar to the conductor-attached sheets 20L and 20R shown in Figures 2 and 3 above.
5 and 6, in the conductor-attached sheet 20L, a mark HMRU is formed on the right end of the anode 23LU, and a mark HMRD is formed on the right end of the cathode 23LD. Similarly, in the conductor-attached sheet 20R, a mark HMLU is formed on the left end of the anode 23RU, and a mark HMLD is formed on the left end of the cathode 23RD.

As a method for obtaining the conductor-attached sheets 20L and 20R shown in FIG. 6, as shown in FIG. 7, a method similar to the method exemplified in FIG. 4 described above can be used.
For example, to obtain a sheet 20L with conductors, first, as shown in FIG. 7(a), a sheet 20 with conductors having two opposing cross-shaped marks (MRU, MRD) is prepared.

Here, the mark MRU and the mark MRD are formed at specific positions facing each other in the up-down direction.
More specifically, as shown in FIG. 7(a), the center of mark MRU and the center of mark MRD are located on a line (VL2) which is a virtual line parallel to the extension direction of the pattern conductors 12 and passes through the center of the space between the pattern conductor 12 located at the far right of the conductor-attached sheet 20 and the pattern conductor 12 located next to this far right pattern conductor 12.

Then, the sheet 20 with conductors is cut along a line (VL2) passing through the centers of the two opposing cross-shaped marks (MRU, MRD) to obtain a sheet 20L with conductors as shown in FIG. 7(b).
Although not shown in the figure, to obtain conductor-attached sheet 20R, a conductor-attached sheet having a shape that is left-right inverted from conductor-attached sheet 20 shown in Figure 7(a) is prepared, and in the same manner as described above, conductor-attached sheet 20R having a shape that is left-right inverted from conductor-attached sheet 20L shown in Figure 7(b) can be obtained.

The obtained sheets 20L and 20R with conductors are then aligned and arranged adjacent to each other, thereby achieving the arrangement shown in FIG.
In this process of aligning the positions and arranging them adjacent to each other, the above-mentioned marks HMRU, HMLU, HMRD, and HMLD can be used to align the positions in the same manner as in the first embodiment.

2, it is preferable that the spacing (SW4) between the pattern conductors 12 arranged in parallel on the conductor-attached sheet 20L and the spacing (SW5) between the pattern conductors 12 arranged in parallel on the conductor-attached sheet 20R are the same, and that the spacing (SW6) between the pattern conductor 12 arranged closest to the conductor-attached sheet 20R on the conductor-attached sheet 20L and the pattern conductor 12 arranged closest to the conductor-attached sheet 20L on the conductor-attached sheet 20R is the same as the spacing (SW4) and spacing (SW5). That is, it is preferable that the spacing (SW4), spacing (SW5), and spacing (SW6) shown in FIG. 5 are SW4=SW5=SW6.
This is because even in a multi-faceted arrangement, the entire multi-faceted area can be heated uniformly.

Third Embodiment
The arrangement shown in Figure 2 above shows an example in which two sheets, 10L and 10R, are arranged adjacent to each other so that the area of both sheets, 10L and 10R, can be heated.
However, the present invention may also be configured to arrange more small-area conductor-equipped sheets (i.e., three or more sheets). By arranging more small-area conductor-equipped sheets, it becomes possible to accommodate a larger-area windshield or the like.

In this case, too, the area of a single sheet with conductors can be small, eliminating the need for a production line capable of handling large sizes (large areas), and making it possible to keep production costs low. In addition, because the area of a single sheet with conductors is small, the number of pattern conductors arranged on a single sheet with conductors can be reduced, and therefore the risk of breakage of the pattern conductors is lower than with a sheet with conductors having a large area, and yields can be improved. Furthermore, because the area of a single sheet with conductors is small, handling and transportation are easier than with a sheet with conductors having a large area.

Figure 8 is a plan view showing an example of a third embodiment of the arrangement of a sheet with conductors according to the present invention. Also, Figure 9 is a diagram explaining the sheet with conductors constituting the arrangement shown in Figure 8.

For example, in the example shown in Figure 8, conductor-attached sheet 10L, conductor-attached sheet 10C, and conductor-attached sheet 10R are arranged from the left side of the figure, and the area of three sheets, conductor-attached sheet 10L, conductor-attached sheet 10C, and conductor-attached sheet 10R, is heated.
Here, the conductor-attached sheet 10L and the conductor-attached sheet 10R shown in Fig. 8 may be the same as the conductor-attached sheet 10L and the conductor-attached sheet 10R shown in Fig. 2 and Fig. 3. In the example shown in Fig. 8, a conductor-attached sheet 10C is further added.

In this sheet with conductors 10C, marks that act as alignment marks are formed on both side ends in the direction in which the anode 13U and cathode 13D of the pair of bus bars 13 extend. More specifically, as shown in FIG. 8, in this sheet with conductors 10C, a mark HMRU is formed on the right end of the anode 13U of the pair of bus bars 13, and a mark HMRD is formed on the right end of the cathode 13D. Furthermore, a mark HMLU is formed on the left end of the anode 13U, and a mark HMLD is formed on the left end of the cathode 13D.

To achieve the arrangement shown in Figure 8, a specific position (e.g., the center position) of the mark HMLU at the upper left end of the conductor-included sheet 10C is aligned with a specific position (e.g., the center position) of the mark HMRU at the upper right end of the conductor-included sheet 10L, and the mark HMLD at the lower left end of the conductor-included sheet 10C is aligned with the mark HMRD at the lower right end of the conductor-included sheet 10L, and the conductor-included sheet 10L and the conductor-included sheet 10C are arranged adjacent to each other.
Similarly, the mark HMRU at the upper right end of the conductor-included sheet 10C is aligned with the mark HMLU at the upper left end of the conductor-included sheet 10R, and the mark HMRD at the lower right end of the conductor-included sheet 10C is aligned with the mark HMLD at the lower left end of the conductor-included sheet 10R, so that the conductor-included sheets 10C and 10R are disposed adjacent to each other.

In addition, Figure 8 shows an example in which conductor-attached sheet 10L, conductor-attached sheet 10C, and conductor-attached sheet 10R are arranged from the left side of the figure, so that the area of three sheets, conductor-attached sheet 10L, conductor-attached sheet 10C, and conductor-attached sheet 10R, can be heated, but this embodiment is not limited to this, and a configuration in which more conductor-attached sheets are arranged may also be used.
For example, a plurality of conductor-attached sheets 10C may be disposed between the conductor-attached sheets 10L and 10R shown in FIG.

To obtain a sheet 10C with conductors, as shown in FIG. 9, a method similar to the method exemplified in FIG. 4 described above can be used.
First, as shown in Fig. 9(a), a sheet 10 with conductors is prepared, in which a cross-shaped mark MRU is formed near the right end of the anode 13U of a pair of bus bars 13, a cross-shaped mark MLU is formed near the left end, and a cross-shaped mark MRD is formed at the right end of the cathode 13D, and a cross-shaped mark MLD is formed near the left end. This sheet 10 with conductors may be the same as the sheet 10 with conductors shown in Fig. 4(a).

Here, the mark MRU and the mark MRD are formed at specific positions facing each other in the up-down direction.
More specifically, as shown in FIG. 9(a), the center of mark MRU and the center of mark MRD are located on a line (VL3) which is a virtual line parallel to the extension direction of the pattern conductors 12 and passes through the center of the space between the pattern conductor 12 located at the far right of the conductor-attached sheet 10 and the pattern conductor 12 located next to this far right pattern conductor 12.

The marks MLU and MLD are also formed at specific positions facing each other in the up-down direction.
More specifically, as shown in FIG. 9(a), the center of mark MLU and the center of mark MLD are located on a line (VL4) which is a virtual line parallel to the extension direction of the pattern conductors 12 and passes through the center of the space between the pattern conductor 12 arranged on the leftmost side of the conductor-attached sheet 10 and the pattern conductor 12 arranged next to the pattern conductor 12 arranged on the rightmost side.

Then, the sheet with conductors 10 is cut along a line passing through the centers of the two opposing cross-shaped marks (MRU, MRD) on the right side and a line passing through the centers of the two opposing cross-shaped marks (MLU, MLD) on the left side to obtain the sheet with conductors 10C as shown in FIG. 9(b).

Then, the obtained sheet with conductor 20C can be arranged between the sheet with conductor 10L and the sheet with conductor 10R as described above to obtain the arrangement shown in FIG. 8.

In the example shown in FIG. 8, as in FIG. 2, the spacing between the pattern conductors 12 arranged in parallel on the conductor-attached sheet 10L, the spacing between the pattern conductors 12 arranged in parallel on the conductor-attached sheet 10C, and the spacing between the pattern conductors 12 arranged in parallel on the conductor-attached sheet 20R are the same, and the spacing between the pattern conductor 12 arranged closest to the conductor-attached sheet 20C on the conductor-attached sheet 20L and the pattern conductor 12 arranged closest to the conductor-attached sheet 20L on the conductor-attached sheet 20C, and the spacing between the pattern conductor 12 arranged closest to the conductor-attached sheet 20C on the conductor-attached sheet 20R and the pattern conductor 12 arranged closest to the conductor-attached sheet 20R on the conductor-attached sheet 20C are preferably the same as the spacing in each of the conductor-attached sheets. This is because even in a multi-faceted arrangement, the entire multi-faceted area can be heated uniformly.

Fourth Embodiment
FIG. 10 is a plan view showing an example of an arrangement of a sheet provided with conductors according to a fourth embodiment of the present invention.

In the arrangement shown in Figure 8 above, an example is shown in which a sheet with conductors 10C is arranged between the sheet with conductors 10L and the sheet with conductors 10R in the arrangement shown in Figure 2, but the present invention may also be in an arrangement in which a sheet with conductors 10C is arranged between the sheet with conductors 20L and the sheet with conductors 20R in the arrangement shown in Figure 5.
In this case, similarly to the arrangement shown in Fig. 8, by arranging a greater number of small conductor-equipped sheets, it becomes possible to accommodate a larger area of a windshield, etc. Also, in this case, similarly to the arrangement shown in Fig. 5, the degree of freedom in the shape of the conductor-equipped sheets that can be selected increases, so that an arrangement more suitable for the shape of the windshield, etc. can be obtained.

In this case, too, the area of a single sheet with conductors can be small, eliminating the need for a production line capable of handling large sizes (large areas), and making it possible to keep production costs low. In addition, because the area of a single sheet with conductors is small, the number of pattern conductors arranged on a single sheet with conductors can be reduced, and therefore the risk of breakage of the pattern conductors is lower than with a sheet with conductors having a large area, and yields can be improved. Furthermore, because the area of a single sheet with conductors is small, handling and transportation are easier than with a sheet with conductors having a large area.

In addition, in Figure 10, an example is shown in which a sheet with a conductor 20L, a sheet with a conductor 10C, and a sheet with a conductor 20R are arranged from the left side of the figure, so that the area of three sheets, the sheet with a conductor 20L, the sheet with a conductor 10C, and the sheet with a conductor 20R, can be heated. However, this embodiment is not limited to this, and a configuration in which more sheets with a conductor are arranged may also be used.
For example, a plurality of conductor-attached sheets 10C may be disposed between the conductor-attached sheets 20L and 20R shown in FIG.

(Cross-sectional structure of sheet with conductor)
FIG. 11 is a cross-sectional view showing an example of the cross-sectional configuration of a sheet with conductors according to the present invention.
More specifically, FIG. 11 is a cross-sectional view showing an example of the cross-sectional configuration of the conductor-attached sheet 10L shown in FIG. 2 taken along line AA.
Note that Figure 11 shows an example of the cross-sectional configuration of a portion of conductor-attached sheet 10L, but the same can be applied to conductor-attached sheet 10R, conductor-attached sheet 10, conductor-attached sheet 10C, conductor-attached sheet 20L, conductor-attached sheet 20R, and conductor-attached sheet 20.

As shown in Figure 11, the conductor-attached sheet 10L comprises a substrate 51 (same as substrate 11 in Figure 2) and a plurality of linear pattern conductors 52 (same as pattern conductors 12 in Figure 2) arranged on one surface of the substrate 51.
The details of the substrate 51 and the pattern conductors 52 that constitute the conductor-attached sheet 10L will be described later together with the respective components of the laminated plate that will be described later.

(Laminated board)
12 is a cross-sectional view showing an example of a cross-sectional configuration of a laminate according to the present invention. As shown in Fig. 12, the laminate 50 includes a conductor-attached sheet 10L, a conductor-attached sheet 10R, a first transparent substrate 61, a second transparent substrate 62, and a bonding layer 63.
Note that Figure 12 shows an example of the cross-sectional configuration of a laminated plate 50 comprising adjacently arranged conductor-attached sheets 10L and 10R as shown in Figure 2, as an example of a laminated plate according to the present invention. However, in addition to this example, the same can be applied to a laminated plate comprising conductor-attached sheets 20L and conductor-attached sheets 20R in the arrangement shown in Figure 5, a laminated plate comprising each conductor-attached sheet in the arrangement shown in Figure 8, and a laminated plate comprising each conductor-attached sheet in the arrangement shown in Figure 10.

Here, the first transparent substrate 61 is located on the opposite side to the surface of the base material 51 on which the patterned conductors 52 are arranged, relative to the conductor-attached sheet 10L etc. The second transparent substrate 62 is located on the side of the surface of the base material 51 on which the patterned conductors 52 are arranged, relative to the conductor-attached sheet 10L etc. The bonding layer 63 is located between the conductor-attached sheet 10L and the second transparent substrate 62.
In other words, the laminate 50 has a configuration in which a first transparent substrate 61, a sheet with conductors according to the present invention such as the sheet with conductors 10L, a bonding layer 63, and a second transparent substrate 62 are laminated in this order.

The laminate 50 is not limited to the illustrated example, and may be provided with other functional layers that are expected to exhibit specific functions. One functional layer may be configured to exhibit two or more functions, and for example, at least one of the first transparent substrate 61 and the second transparent substrate 62 of the laminate 50, the bonding layer 63, and the base material 51 of the sheet 10 with conductors may be provided with some function. Examples of functions that can be provided to the laminate 50 include an anti-reflection (AR) function, a hard coat (HC) function with scratch resistance, an infrared shielding (reflection) function, an ultraviolet shielding (reflection) function, an anti-fouling function, and a bonding function.

(Component)
Hereinafter, each of the components constituting the conductor-attached sheet and the laminate according to the present invention will be described.

(Base material)
The substrate 51 functions as a substrate supporting the pattern conductors and the bus bars of the conductor-attached sheet according to the present invention, such as the conductor-attached sheet 10L. In the lamination board 50, the substrate 51 functions to bond the conductor-attached sheet and the first transparent substrate 61 together.
The substrate 51 is an electrically insulating film that is generally called transparent and transmits light having wavelengths in the visible light wavelength band (380 nm to 780 nm).

In the laminate 50, in order to make it difficult to recognize the boundary between the base material 51 and the bonding layer 63 in contact with the base material 51, it is preferable that the refractive index of the base material 51 is the same as the refractive index of the bonding layer 63. An example of a material for the base material 51 is polyvinyl butyral (PVB), which is the same material as the bonding layer 63.

The thickness of the substrate 51 is preferably 0.03 mm or more and 0.20 mm or less, taking into consideration light transparency and appropriate support as a substrate for supporting the pattern conductors and bus bars. By making the substrate 51 sufficiently thin, the substrate 51 can be made difficult to observe.

The term "transparent" means that the substrate has a degree of transparency that allows the substrate to be seen from one side to the other side, and for example, that the substrate has a visible light transmittance of 30% or more, and more preferably 70% or more. The visible light transmittance is determined as the average value of the transmittance at each wavelength when measured using a spectrophotometer (Shimadzu Corporation's UV-3100PC, compliant with JIS K 0115) in the measurement wavelength range of 380 nm to 780 nm.

(Pattern conductor)
The patterned conductors 52 (which are the same as the patterned conductors 12 shown in FIGS. 2 to 10) function as heating elements that generate resistance heating when a current is passed through them.
The pattern conductor 52 may be formed using an opaque metal material. On the other hand, the ratio of the area on the substrate 51 that is not covered by the pattern conductor 52, i.e., the non-coverage rate, is high, about 70% or more and 90% or less. As described later, the line width of the pattern conductor 52 is about 2 μm or more and 20 μm or less. Therefore, the area in which the pattern conductor 52 is arranged is perceived as transparent as a whole, and is designed not to impair the visibility of the occupant of the moving body 1. In other words, the pattern conductor 52 is sufficiently invisible to the occupant of the moving body 1.

11, the pattern conductor 52 has a generally rectangular cross section. In order to achieve uniform heating, it is preferable that the multiple pattern conductors 52 have the same cross-sectional area and are arranged at equal intervals.
The line width (LW) of the pattern conductor 52 is preferably 2 μm to 20 μm, and the height (LH) is preferably 1 μm to 60 μm. The interval D is preferably 1 mm to 10 mm. With such dimensions, the pattern conductor 52 can function as a heating element, and the pattern conductor 52 with such dimensions is sufficiently thinned to effectively make the pattern conductor 52 invisible.

11, the pattern conductor 52 may include a conductive layer 52a, a first dark layer 52b covering the surface of the conductive layer 52a facing the substrate 51, and a second dark layer 52c covering the surface of the conductive layer 52a facing the substrate 51 and both side surfaces. In particular, it is preferable that the pattern conductor 52 includes at least the first dark layer 52b. The conductive layer 52a made of a metal material having excellent conductivity exhibits a relatively high reflectance. When light is reflected by the conductive layer 52a of the pattern conductor 52, the reflected light becomes visible, which may interfere with the visibility of the passenger of the vehicle 1.
In addition, when the conductive layer 52a is observed from the outside, the design may be deteriorated. Therefore, it is preferable that the second dark color layer 52c covers at least a part of the surface of the conductive layer 52a. This is because deterioration of the design when viewed from the outside can be prevented.
The first dark color layer 52b and the second dark color layer 52c may be layers having a lower reflectance for visible light than the conductive layer 52a, and may be layers of a dark color such as black, for example.

Examples of materials for forming such a conductive layer 52a include metals such as gold, silver, copper, platinum, aluminum, chromium, molybdenum, nickel, titanium, palladium, indium, and tungsten, as well as one or more alloys containing one or more of these metals.

(Busbar)
Each conductor-attached sheet has a pair of bus bars, each of which is composed of an anode and a cathode that are spaced apart from each other.
Here, a pair of bus bars 13 provided on the conductor sheet 10L shown in Figure 2 will be described as an example, but the same applies to the pair of bus bars 23L provided on the conductor sheet 20L shown in Figure 5 and the pair of bus bars 23R provided on the conductor sheet 20R.

In the moving body 1, when the voltage of the power source 3 is applied to the pair of bus bars 13, a current flows through the pattern conductors 12 of the conductor-attached sheet 10L.
In order to reduce electrical resistance, the anode 13U and cathode 13D constituting the pair of bus bars 13 have a width greater than that of the pattern conductor 12. For this reason, in the anode 13U and cathode 13D constituting the pair of bus bars 13, heat generation due to resistance heating is unlikely to occur.

It is preferable that the height of the anode 13U and cathode 13D constituting the pair of bus bars 13 is the same as the height of the pattern conductor 12 (height LH of the pattern conductor 52 shown in FIG. 11). This is because it makes it possible to manufacture the pattern conductor 12 and the anode 13U and cathode 13D constituting the pair of bus bars 13 in a single process.

Although not shown, the pair of bus bars 13 may also have a conductive layer made of a metal material and a dark layer formed on the surface of the conductive layer, similar to the pattern conductor 52 shown in FIG. 11. The dark layer makes it difficult to observe the conductive layer, which has a relatively high reflectivity, and therefore ensures good visibility for the occupants and the imaging device. It also prevents a decrease in the design when viewed from the outside.

Examples of materials for constructing such a pair of bus bars 13 include metals such as gold, silver, copper, platinum, aluminum, chromium, molybdenum, nickel, titanium, palladium, indium, and tungsten, as well as one or more alloys containing one or more of these metals.
The material for forming the pair of bus bars 13 is preferably the same as the material for forming the pattern conductor 12. This is because it allows the pattern conductor 12 and the pair of bus bars 13 to be manufactured in a single process.

In the front window 2, the anode 13U and cathode 13D that make up a pair of bus bars 13 are preferably arranged to overlap the colored layer so as to be difficult to observe.

(First Transparent Substrate, Second Transparent Substrate)
The first transparent substrate 61 and the second transparent substrate 62 are preferably made of a material having a high visible light transmittance so as not to obstruct the visibility of the passengers of the moving body 1. Examples of materials constituting the first transparent substrate 61 and the second transparent substrate 62 include soda lime glass and blue plate glass. The first transparent substrate 61 and the second transparent substrate 62 preferably have a visible light transmittance of 90% or more. Here, the visible light transmittance is specified as the average value of the transmittance at each wavelength when measured using a spectrophotometer (Shimadzu Corporation's "UV-3100PC", compliant with JIS K 0115) in the measurement wavelength range of 380 nm to 780 nm. In addition, the first transparent substrate 61 and the second transparent substrate 62 preferably have a thickness of 1 mm or more and 5 mm or less. With such a thickness, the first transparent substrate 61 and the second transparent substrate 62 having excellent strength and optical properties can be obtained.

The first transparent substrate 61 and the second transparent substrate 62 have substantially the same shape when observed from the normal direction of the plate surface, i.e., when viewed in a plan view. The first transparent substrate 61 and the second transparent substrate 62 may be made of the same material, or may differ from each other in at least one of the material and the configuration.

(Bonding layer)
The bonding layer 63 is disposed between the conductor-attached sheet and the second transparent substrate 62, and bonds the conductor-attached sheet and the second transparent substrate 62 to each other. As shown in Fig. 12, the pattern conductors 52 in the laminate 50 are embedded in the bonding layer 63.

As the bonding layer 63, a layer made of a material having various adhesive properties or tackiness can be used, but it is preferable to use a material having a high visible light transmittance. In addition, in the laminate 50, in order to make it difficult to recognize the boundary between the bonding layer 63 and the base material 51 in contact with the bonding layer 63, it is preferable that the refractive index of the bonding layer 63 is the same as the refractive index of the base material 51.
A layer made of polyvinyl butyral (PVB) can be exemplified as a typical material of such a bonding layer 63. The thickness of the bonding layer 63 is preferably 0.15 mm or more and 1 mm or less.

(Method of manufacturing sheet with conductor)
Next, an example of a method for manufacturing a sheet with conductors having a cross-sectional configuration as shown in Fig. 11 will be described with reference to Fig. 13. Fig. 13 is a process diagram showing an example of a method for manufacturing the sheet with conductors 10 shown in Fig. 4(a).
First, as shown in FIG. 13A, a dark layer 52B that will form the first dark layer 52b is provided on a substrate 51, and a metal film 52A that will form the conductive layer 52a is provided on the dark layer 52B.
As already described as a material for the conductive layer 52a, the metal film 52A may be formed using one or more of gold, silver, copper, platinum, aluminum, chromium, molybdenum, nickel, titanium, palladium, indium, tungsten, and alloys thereof. The metal film 52A may be formed by a known method. For example, a method of attaching a metal foil such as a copper foil, a plating method including electrolytic plating and electroless plating, a sputtering method, a CVD method, a PVD method, an ion plating method, or a combination of two or more of these methods may be used.

Next, as shown in FIG. 13(b), a resist pattern 70 is provided on the metal film 52A. The resist pattern 70 has a shape corresponding to the pattern conductor 52 to be formed. In the method described here, the resist pattern 70 is provided only on the portions that will ultimately form the pattern conductor 52. This resist pattern 70 can be formed by patterning using known photolithography techniques.

Next, as shown in FIG. 13(c), the metal film 52A and the dark layer 52B are etched using the resist pattern 70 as a mask. This etching causes the metal film 52A and the dark layer 52B to be patterned into a pattern substantially identical to that of the resist pattern 70. As a result, the conductive layer 52a is formed from the patterned metal film 52A, and the first dark layer 52b is formed from the dark layer 52B.

The etching method is not particularly limited, and a known method can be used. Examples of known methods include wet etching using an etching solution and plasma etching. After that, the resist pattern 70 is removed as shown in FIG. 13(d).

Next, as shown in FIG. 13(e), a second dark layer 52c is formed on the surface of the conductive layer 52a opposite to the substrate 51 and on the side surface. The second dark layer 52c can be formed of a metal oxide or metal sulfide from the part that constituted the conductive layer 52a by, for example, subjecting a part of the material that constitutes the conductive layer 52a to a darkening treatment (blackening treatment). The second dark layer 52c may be provided on the surface of the conductive layer 52a. The second dark layer 52c may be provided by roughening the surface of the conductive layer 52a.
By the steps described above, a sheet with conductors having a cross-sectional structure as shown in FIG. 11 can be manufactured.

(Method of manufacturing laminated board)
Next, an example of a method for manufacturing the laminated board 50 having the cross-sectional structure shown in FIG. 12 will be described with reference to FIG.
In manufacturing the lamination board 50, a plurality of sheets with conductors manufactured as described above are prepared and arranged adjacent to each other. In the process of arranging the plurality of sheets with conductors adjacent to each other, the sheets are aligned using the marks remaining on the sheets with conductors in the process of cutting the sheets with conductors.

For example, to manufacture a laminate 50 having conductor-attached sheets arranged as shown in FIG. 2, first, the conductor-attached sheet 10 manufactured as described above is cut at a common position of the mark MRU formed on the anode 13U and the mark MRD formed on the cathode 13D as shown in FIG. 4 to prepare the conductor-attached sheet 10L and the conductor-attached sheet 10R.

Next, the conductor-attached sheets 10L and 10R are aligned and adjacently disposed on the first transparent substrate 61 as shown in FIG. 14(a), and are bonded to the first transparent substrate 61.

In the above-mentioned step of aligning and arranging adjacently, the conductor-attached sheets 10L and 10R that were cut in the step of cutting the conductor-attached sheet 10 are aligned using the marks remaining on the sheets.
For example, a specific position (e.g., the center position) of mark HMRU at the upper right end of conductor-included sheet 10L is aligned with a specific position (e.g., the center position) of mark HMLU at the upper left end of conductor-included sheet 10R, and a specific position (e.g., the center position) of mark HMRD at the lower right end of conductor-included sheet 10L is aligned with a specific position (e.g., the center position) of mark HMLD at the lower left end of conductor-included sheet 10R, and the sheets are arranged so that the cut surfaces of conductor-included sheet 10L and conductor-included sheet 10R are in contact with each other.

Next, as shown in Figure 14 (b), a bonding layer 63 and a second transparent substrate 62 are laminated from the side where the pattern conductors 52 of the conductor-attached sheets 10L and 10R are arranged, thereby bonding the conductor-attached sheets 10L and 10R to the second transparent substrate 62.
Through these steps, a laminate 50 can be manufactured as shown in FIG.

Although the embodiments of the conductor-attached sheet, laminated plate, moving body, and manufacturing method of the conductor-attached sheet and the manufacturing method of the laminated plate according to the present invention have been described above, the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments are merely examples, and anything that has substantially the same configuration as the technical idea described in the claims and provides similar effects is included in the technical scope of the present invention in any case.

1 Mobile object 2 Front window 3 Power source 10, 10L, 10R, 10C Sheet with conductor 11 Substrate 12 Pattern conductor 13 Pair of bus bars 13U Anode 13D Cathode 20, 20L, 20R Sheet with conductor 23L, 23R Pair of bus bars 23LU, 23RU Anode 23LD, 23RD Cathode 50 Laminated plate 51 Substrate 52 Pattern conductor 52a Conductive layer 52b First dark layer 52c Second dark layer 52A Metal film 52B Dark layer 61 First transparent substrate 62 Second transparent substrate 63 Bonding layer 70 Resist pattern

Claims (8)

A sheet with a conductor;
A first transparent substrate;
A second transparent substrate;
A bonding layer;
Equipped with
The conductor-attached sheet is
A substrate;
a patterned conductor disposed on one surface of the substrate;
A pair of bus bars connected to the pattern conductor and constituting an anode and a cathode;
Equipped with
The pattern conductors are arranged in parallel in the left-right direction,
the anode and the cathode of the pair of bus bars are arranged in a vertical direction to face each other with the pattern conductor therebetween,
a mark is formed on each of the anode and the cathode of the pair of bus bars;
The mark formed on the anode and the mark formed on the cathode,
are formed at positions opposing each other in the up-down direction,
the first transparent substrate is located on the opposite side of the conductor-attached sheet to the one surface of the base on which the pattern conductors are arranged,
the second transparent substrate is located on the side of the one surface of the base material on which the pattern conductors are arranged, relative to the conductor-attached sheet;
The bonding layer is located between the conductor-attached sheet and the second transparent substrate . 2. The laminate according to claim 1, wherein the mark is formed on one end of the anode and the cathode in the same direction in which the anode and the cathode extend. The laminate according to claim 1 , wherein the marks are formed on both end portions of the anode and the cathode in a direction in which the anode and the cathode extend. 4. The laminate according to claim 2, wherein in a plan view, a distance between an end face of the substrate on the end side on which the mark is formed and the pattern conductor closest to the end face is half the spacing between the pattern conductors arranged in parallel . The two conductor-attached sheets are disposed adjacent to each other on the left and right,
the spacing between the patterned conductors arranged in parallel on the left-hand sheet of the two adjacent sheets with conductors is equal to the spacing between the patterned conductors arranged in parallel on the right-hand sheet of the two adjacent sheets with conductors,
The distance between the pattern conductor arranged in the left-hand sheet of two adjacent sheets with conductors closest to the right-hand sheet with conductors and the pattern conductor arranged in the right-hand sheet of two adjacent sheets with conductors closest to the left-hand sheet with conductors is
5. The laminate according to claim 1 , wherein the spacing is the same as the spacing between the pattern conductors arranged in parallel on each of two adjacent conductor-attached sheets. A moving body comprising the laminated plate according to any one of claims 1 to 5 . preparing a sheet with conductors, the sheet comprising: a substrate, a patterned conductor arranged on one surface of the substrate, and a pair of bus bars connected to the patterned conductors and constituting an anode and a cathode, the patterned conductors being arranged in parallel in the left-right direction, the anode and the cathode of the pair of bus bars being arranged in the up-down direction so as to face each other with the patterned conductor therebetween, a mark being formed on each of the anode and the cathode of the pair of bus bars, the mark formed on the anode and the mark formed on the cathode being formed in positions facing each other in the up-down direction;
cutting the sheet with conductors in a direction parallel to a direction in which the pattern conductors extend at a common position between the mark formed on the anode and the mark formed on the cathode.
A step of preparing a plurality of sheets with conductors manufactured by a method for manufacturing a sheet with conductors ;
A step of arranging a plurality of the conductor-attached sheets adjacent to each other on a first transparent substrate and bonding the sheets to the first transparent substrate ;
a step of laminating a bonding layer and a second transparent substrate from the side of the plurality of sheets with conductors bonded to the first transparent substrate on which the pattern conductors are disposed, thereby bonding the plurality of sheets with conductors to the second transparent substrate;
Equipped with
a step of arranging a plurality of the conductor-attached sheets adjacent to each other on the first transparent substrate and bonding the sheets to the first transparent substrate ,
A method for manufacturing a laminate, comprising the step of aligning using the portion of the mark remaining on the conductor-attached sheet. in the sheet with conductors, a center of the mark formed on the anode and a center of the mark formed on the cathode are located on a line passing through a center of an interval between the pattern conductors arranged in parallel,
In the method for producing a sheet with conductors, a step of cutting the sheet with conductors in a direction parallel to a direction in which the pattern conductors extend at a common position of the mark formed on the anode and the mark formed on the cathode is
The method for manufacturing a laminate according to claim 7 , further comprising the step of cutting the conductor-attached sheet along a line passing through a center of the mark formed on the anode and a center of the mark formed on the cathode.