CN113985641B - Color filter substrate, display panel and color filter substrate manufacturing method - Google Patents

Abstract

The embodiment of the application discloses a color film substrate, a display panel and a manufacturing method of the color film substrate. The color film substrate comprises a substrate and a plurality of refraction layers, wherein the refraction layers are sequentially arranged on the substrate, the refraction indexes of two adjacent refraction layers are different, and the refraction index of the refraction layer close to the substrate in the plurality of refraction layers is different from that of the substrate. According to the application, the refraction layers with different refractive indexes are arranged, so that light rays emitted from different positions can reach the same observation point after being refracted by the multi-layer refraction layers, the color cast problem of different observation points is solved, and the visual angle of the color film substrate is improved.

Description

Color filter substrate, display panel and color filter substrate manufacturing method

Technical field

The present application relates to the field of display, and specifically to a color filter substrate, a display panel, and a method for manufacturing the color filter substrate.

Background technique

With the development of display technology, the viewing angle problem of display panels has gradually become the primary technology for high-end products. However, the light emission angle of the color filter substrate in the current display panel is single, causing color deviation at different viewing points, resulting in a smaller viewing angle of the color filter substrate.

Contents of the invention

Embodiments of the present application provide a color filter substrate, a display panel and a manufacturing method of the color filter substrate, which can solve the problem of the color filter substrate having a small viewing angle.

An embodiment of the present application provides a color filter substrate, including:

base substrate;

Multiple refractive layers are arranged on the base substrate in sequence, and the refractive index of two adjacent refractive layers is different; the refractive index of the refractive layer close to the base substrate among the multiple refractive layers is the same as the refractive index of the refractive layer. The refractive indices of the substrates are different.

Optionally, in some embodiments of the present application, the refractive indices of the multiple refractive layers are different.

Optionally, in some embodiments of the present application, a plurality of protrusions are arranged side by side on the surface of at least one layer of the refractive layer, and there is a first gap between adjacent protrusions.

Optionally, in some embodiments of the present application, the cross-sectional area of the protrusion gradually increases in a direction approaching the base substrate; or,

The cross-sectional area of the protrusion gradually decreases in a direction approaching the base substrate.

Optionally, in some embodiments of the present application, the refractive index of the multiple refractive layers gradually increases in a direction away from the base substrate; or,

The refractive index of the multiple refractive layers gradually decreases in a direction away from the base substrate.

Optionally, in some embodiments of the present application, the thickness of the multiple refractive layers gradually increases in a direction away from the base substrate; or,

The thickness of the plurality of refractive layers gradually decreases in a direction away from the base substrate.

Optionally, in some embodiments of the present application, the sum of the thicknesses of multiple refractive layers is greater than or equal to 10 nanometers and less than or equal to 3000 nanometers.

Optionally, in some embodiments of the present application, the material of the refractive layer includes one or more of silicon oxide, silicon nitride, and silicon oxynitride.

Optionally, in some embodiments of the present application, the color filter substrate includes a plurality of wire grids, and a plurality of the wire grids are arranged side by side on the base substrate, and between two adjacent wire grids Has a second gap.

Optionally, in some embodiments of the present application, the extension direction of the protrusions is the same as the extension direction of the wire grid; the distribution direction of a plurality of the protrusions is the same as the distribution direction of a plurality of the wire grids. .

Optionally, in some embodiments of the present application, the first gap and the second gap are offset in the thickness direction of the base substrate.

Optionally, in some embodiments of the present application, the base substrate has an opposite first side and a second side, a plurality of the wire grids are arranged side by side on the first side, and multiple layers of the refractive The layers are arranged on the wire grid in sequence; the color filter substrate also includes a color resistance layer, and the color resistance layer is arranged on the second side.

Correspondingly, embodiments of the present application also provide a display panel, including:

The color filter substrate described in any one of the above;

An array substrate, the array substrate is located on the second side of the base substrate in the color filter substrate; and

A liquid crystal layer is filled between the color filter substrate and the array substrate.

Correspondingly, embodiments of the present application also provide a method for manufacturing a color filter substrate, including:

providing a base substrate;

A plurality of wire grids are formed on the base substrate, and a plurality of the wire grids are arranged in parallel;

Multiple refractive layers are sequentially formed on the base substrate. The refractive index of two adjacent layers of the refractive layers is different. The refractive index of the refractive layer close to the base substrate among the multiple refractive layers is the same as the refractive index. The refractive index of the base substrate is not the same.

In the embodiment of the present application, the color filter substrate includes a base substrate and a multi-layer refractive layer arranged sequentially on the base substrate. The refractive index of the two adjacent refractive layers is different. The refractive layer close to the base substrate among the multi-layer refractive layers The refractive index is different from the refractive index of the base substrate. By setting up refractive layers with different refractive indexes, light emitted from different locations can reach the same observation point after being refracted by multiple refractive layers, thereby improving the color shift problem at different observation points and improving the viewing angle of the color filter substrate.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a color filter substrate provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

Figure 3 is a flow chart of a method for manufacturing a color filter substrate provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of step S200 in Figure 3 provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of step S300 in Figure 3 provided by an embodiment of the present application.

Explanation of reference symbols:

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of this application. In addition, it should be understood that the specific embodiments described here are only used to illustrate and explain the application, and are not used to limit the application. In this application, unless otherwise specified, the directional words used such as "upper" and "lower" usually refer to the upper and lower positions of the device in actual use or working conditions, specifically the direction of the drawing in the drawings. ; while “inside” and “outside” refer to the outline of the device.

Embodiments of the present application provide a color filter substrate, a display panel, and a method for manufacturing the color filter substrate. Each is explained in detail below. It should be noted that the order of description of the following embodiments does not limit the preferred order of the embodiments.

First, embodiments of the present application provide a color filter substrate, which includes a base substrate and a multi-layer refractive layer. The multi-layer refractive layers are sequentially disposed on the base substrate. The refractive index of two adjacent refractive layers are different. The multi-layer refractive layers The refractive index of the refractive layer in the layer that is close to the base substrate is different from the refractive index of the base substrate.

FIG. 1 is a schematic structural diagram of a color filter substrate provided by an embodiment of the present application. As shown in FIG. 1 , the color filter substrate 100 includes a base substrate 110 for supporting each film layer structure of the color filter substrate 100 . The substrate substrate 110 used may be a glass substrate or other types of substrates, and its specific material may be adjusted according to actual design requirements, and is not limited here.

It should be noted that since the color filter substrate 100 is located entirely on the light exit side, in order to ensure the light extraction rate of the color filter substrate 100, the substrate substrate 110 used needs to have good light transmittance to avoid a large amount of loss when the light passes through the substrate substrate 110. , thereby improving the light extraction rate of the color filter substrate 100 .

The color filter substrate 100 includes a multi-layer refractive layer 120. The multi-layer refractive layer 120 is sequentially arranged on the base substrate 110 in a direction away from the base substrate 110. When the emitted light passes through the refractive layer 120, it is refracted by the refractive layer 120. Shoot out at different angles to reach different observation points. By adjusting the refractive index of the refractive layer 120, the exit angle of the emitted light can be changed to meet the light requirements of different observation points.

Among them, the refractive index of two adjacent refractive layers 120 is different, that is, each time the light passes through one refractive layer 120, the exit angle of the light will change. By adjusting the refractive index of the adjacent refractive layers 120, the exit angle of the light can be controlled. The angle is controlled so that the emitted light from different positions can reach the same observation point, thereby improving the color shift problem at different observation points and improving the display effect of the color filter substrate 100 .

It should be noted that, except for the refractive index of two adjacent refractive layers 120 being different, the refractive index of the refractive layers 120 arranged at intervals can be the same or different, and the specific setting method can be adjusted according to the actual design requirements, as long as the differences are ensured. The emitted light from the position can reach the same observation point, thereby improving the display effect of the color filter substrate 100 .

Optionally, the refractive index of the refractive layer 120 close to the base substrate 110 in the multi-layer refractive layer 120 is different from the refractive index of the base substrate 110 , that is, the light enters the base substrate 110 from the refractive layer 120 or passes from the base substrate 110 The angle will change when entering the refractive layer 120. At this time, the base substrate 110 can also function as the refractive layer 120 to adjust the angle and direction of the outgoing light.

In the embodiment of the present application, the color filter substrate 100 includes a base substrate 110 and a multi-layer refractive layer 120 sequentially arranged on the base substrate 110 , and the refractive index of the two adjacent refractive layers 120 is different. In the multi-layer refractive layer 120 The refractive index of the refractive layer 120 close to the base substrate 110 is different from the refractive index of the base substrate 110. By setting the refractive layers 120 with different refractive indexes, the light emitted from different positions can be refracted by the multi-layer refractive layer 120. By reaching the same observation point, the color shift problem at different observation points is improved, and the display effect of the color filter substrate 100 is improved.

Optionally, the refractive index of the multi-layer refractive layers 120 is different, that is, the refractive index of each refractive layer 120 is different to further adjust the emission angle of the emitted light, so that one observation point can receive more positions. of the emitted light to further improve the color shift problem at the observation point.

Among them, the setting rules of the refractive index of each refractive layer 120 can be adjusted accordingly according to the design requirements. Refractive layers 120 with different refractive indexes can be used together so that the light emitted from different positions reaches the same observation point.

Optionally, in the embodiment of the present application, a plurality of protrusions 121 are arranged side by side on the surface of at least one refractive layer 120, and there is a first gap 122 between adjacent protrusions 121. That is, after the refractive layer 120 is formed on the base substrate 110 , the surface of the refractive layer 120 is processed by etching or the like to form a plurality of protrusions 121 arranged side by side on the surface of the refractive layer 120 . When the outgoing light enters the refractive layer 120, due to the different shapes of the protrusions 121, the exit angles of the outgoing light are more diverse, which facilitates the adjustment of the exit angle of the outgoing light.

When the refractive layer 120 is further disposed on the refractive layer 120 provided with the protrusion 121 structure, the adjacent refractive layers 120 are filled in the first gaps 122 of the plurality of protrusions 121, so that the emitted light passes through the protrusions 121 and enters the first gap. When the emitted light enters the first gap 122, it can be refracted into the adjacent refractive layer 120. Since the refractive index of the adjacent refractive layers 120 is different, the emitted light can change its exit angle when it enters the first gap 122. Through the cooperation between the refractive index of the adjacent refractive layer 120 and the structure of the protrusion 121, the emission angle of the emitted light can be further adjusted, so that the light emitted from different positions reaches the same observation point.

Optionally, after the adjacent refractive layer 120 fills the first gap 122 between the plurality of protrusions 121, the surface of the refractive layer 120 can continue to be provided with a plurality of protrusions 121, that is, protrusions can be formed on both sides of the refractive layer 120. Starting from 121 to enhance the adjustment of the exit angle of the outgoing light.

In some embodiments, protrusions 121 structures are formed on the side of the spaced refractive layers 120 away from the base substrate 110 in the multi-layer refractive layer 120 , because adjacent refractive layers 120 fill the first gap between the protrusion 121 structures. 122, so that the arrangement directions of the protrusion 121 structures on the multi-layer refractive layer 120 are alternately arranged, that is, the protrusion 121 structure is located on the side of the refractive layer 120 away from the base substrate 110 and the protrusion 121 structure is located on the side of the refractive layer 120 close to the base substrate. The sides of 110 are set alternately.

In other embodiments, each refractive layer 120 is provided with a protrusion 121 structure on the side away from the base substrate 110. Since the adjacent refractive layers 120 fill the first gap 122 between the protrusion 121 structures, except for the first Except for the first and last refractive layer 120, protrusions 121 structures are provided on both sides of the remaining refractive layers 120. This structural design enables the outgoing light to change its exit angle multiple times when passing through each refractive layer 120, thereby increasing the range of change in the outgoing light's exit angle.

Optionally, the cross-sectional area of the protrusion 121 gradually increases along the direction approaching the base substrate 110, or the cross-sectional area of the protrusion 121 gradually decreases along the direction approaching the base substrate 110, so that the emitted light reaches the protrusion. The exit angle and exit direction are different at different positions on the side of the structure 121. By adjusting the changing trend of the cross-sectional area of the protrusion 121, the range of the exit angle of the exit light can be adjusted.

Among them, the structure of the protrusion 121 can be strip-shaped, conical, or other regular or irregular shapes. It only needs to be ensured that the cross-sectional area of the protrusion 121 gradually increases or decreases in the direction approaching the substrate 110 , that is, the protrusion 121 The side surface of the structure only needs to form an acute angle with the surface of the base substrate 110, and there is no special restriction here.

It should be noted that when the protrusion 121 structure on one of the refractive layers 120 is a regular triangular prism or a regular trapezoid, the cross section of the protrusion 121 structure on the adjacent refractive layer 120 that fills the refractive layer 120 is an inverted triangular prism. Or an inverted trapezoid to achieve mutual cooperation between adjacent refractive layers 120 and to facilitate control of the exit angle of the outgoing light.

Optionally, in the embodiment of the present application, the refractive index of the multi-layer refractive layer 120 gradually increases in the direction away from the substrate 110 , that is, the emitted light is angularly deflected in the same direction when passing through the refractive layer 120 layer by layer. This setting method is conducive to estimating the exit angle of the outgoing light, improving the controllability of the exit angle of the outgoing light, and facilitating targeted adjustment of the viewing angle of the color filter substrate 100 .

Similarly, the refractive index of the multi-layer refractive layer 120 can gradually decrease in the direction away from the base substrate 110 , that is, the outgoing light rays are angularly deflected in another direction when passing through the refractive layer 120 layer by layer, so as to achieve targeted improvements. The color shift problem at a certain observation point improves the display effect of the color filter substrate 100.

It should be noted that when designing the distribution of the refractive index of the multi-layer refractive layer 120, it can be adjusted according to actual application requirements. For example, the refraction of the multi-layer refractive layer 120 first gradually increases and then gradually decreases, or the multi-layer refractive layer 120 gradually decreases. The refraction of the refractive layer 120 first gradually decreases and then gradually increases, or the refractive index of the multiple refractive layers 120 is alternately set, etc. There are no special restrictions here.

Optionally, in the embodiment of the present application, the thickness of the multi-layer refractive layer 120 gradually increases in the direction away from the substrate 110 , that is, the optical path of the outgoing light passing through each refractive layer 120 gradually increases, so as to gradually slow down the emission of the outgoing light. The frequency of angle change, this structural design facilitates rough adjustment and then fine adjustment of the exit angle of the outgoing light to achieve control of the exit angle.

Optionally, the thickness of the multi-layer refractive layer 120 gradually decreases in the direction away from the base substrate 110 , that is, the optical path of the outgoing light passing through each refractive layer 120 gradually decreases, so as to gradually increase the frequency of change of the exit angle of the outgoing light. , this structural design facilitates rapid adjustment of the exit angle after initially determining the exit direction of the exit light.

It should be noted that when designing the distribution method of the thickness of the multi-layer refractive layer 120, it can be adjusted according to actual application requirements. For example, the thickness of the multi-layer refractive layer 120 first gradually increases and then gradually decreases, or the thickness of the multi-layer refractive layer 120 gradually increases. The thickness of the layer 120 first gradually decreases and then gradually increases, or the thicknesses of the multiple refractive layers 120 are alternately set, etc., and there is no special limitation here.

Optionally, the sum of the thicknesses of the multi-layer refractive layers 120 in the embodiment of the present application is greater than or equal to 10 nanometers and less than or equal to 3000 nanometers. If the sum of the thicknesses of the multi-layer refractive layers 120 is too large, the optical path that the outgoing light needs to travel when passing through the multi-layer refractive layers 120 is too large, resulting in excessive light loss in the multi-layer refractive layers 120 , resulting in The light transmittance is small, which ultimately affects the display effect of the color filter substrate 100; if the sum of the thicknesses of the multi-layer refractive layers 120 is too small, the multi-layer refractive layers 120 will have a small change in the exit angle of the outgoing light, and may even be unable to achieve the desired effect. Adjustment of the exit angle of the outgoing light.

In the actual production process, the total thickness of the multi-layer refractive layer 120 is set to 10nm, 100nm, 500nm, 1000nm, 2000nm or 3000nm, etc. The specific design value can be adjusted according to the needs, as long as the multi-layer refractive layer 120 is ensured to emit While adjusting the light exit angle, it is sufficient to avoid excessive loss of the exit light in the multi-layer refractive layer 120 and ensure the display effect of the color filter substrate 100 .

Optionally, the material of the refractive layer 120 includes one or more of silicon oxide, silicon nitride, and silicon oxynitride. Through the cooperation and content adjustment of silicon oxide, silicon nitride, and silicon oxynitride, the adjustment of the content can be achieved. The refractive index of the refractive layer 120 is adjusted to meet the matching requirements of different refractive indexes.

Among them, the refractive layer 120 is a transparent film layer, which adjusts the exit angle of the outgoing light while ensuring the transmittance of the outgoing light to avoid affecting the display effect of the color filter substrate 100 . In addition, the refractive layer 120 can also serve as an insulating layer to facilitate the production of subsequent film layers.

Optionally, in the embodiment of the present application, the color filter substrate 100 further includes a plurality of wire grids 130 , and the plurality of wire grids 130 are arranged side by side on the base substrate 110 . The plurality of wire grids 130 can function as polarizers, that is, they have the function of shielding and transmitting incident light, and can transmit either longitudinal light or transverse light to screen the outgoing light to ensure that the color filter substrate 100 display effect.

In addition, the plurality of wire grids 130 also have a reflective function. When part of the light entering the multi-layer refractive layer 120 is reflected to the wire grid 130, the wire grid 130 can reflect the part of the light to the multi-layer refractive layer 120 again to increase the efficiency of the light. The large amount of emitted light increases the display brightness of the color filter substrate 100 .

Optionally, there is a second gap 131 between two adjacent wire grids 130 , that is, the plurality of wire grids 130 are distributed at intervals, so that the emitted light can pass between the adjacent wire grids 130 when passing through the multiple wire grids 130 . The second gap 131 is ejected. By adjusting the line width of the wire grid 130 and the width of the second gap 131 , the intensity of the emitted light in different areas of the color filter substrate 100 can be adjusted to achieve display diversity on the display panel 10 .

In some embodiments, the widths of the second gaps 131 between adjacent wire grids 130 are equal, that is, the multiple wire grids 130 are evenly distributed. This structural design increases the probability of light emitted from each area of the color filter substrate 100 Similarly, it helps to improve the uniformity of display brightness of the color filter substrate 100 .

In other embodiments, the width of the second gap 131 between the wire grids 130 in each area is different, that is, the light intensity in each area is different. For example, the width of the second gap 131 can be gradually increased from the two side edges to the middle area. This structural design causes the light intensity of the color filter substrate 100 to gradually increase from the two side edges to the middle area, that is, the color filter substrate 100 100 The closer to the middle area, the brighter the display.

Alternatively, the width of the second gap 131 is alternately set in size. This structural design causes the light intensity on the color filter substrate 100 to be relatively alternately distributed, but the area with stronger light intensity can emit light to its adjacent areas. The areas with weak intensity are compensated for brightness, so that the overall display brightness of the color filter substrate 100 remains uniform.

It should be noted that, in addition to the above regular distribution, the width of the second gap 131 can also be distributed irregularly according to needs. That is, when a certain area of the color filter substrate 100 requires higher light intensity, the second gap in this area can be The overall width of the second gap 131 is increased to increase the amount of light emitted in this area; when a certain area of the color filter substrate 100 has low light intensity requirements, the overall width of the second gap 131 in this area is reduced to reduce the amount of light emitted in this area. . The specific distribution method of the wire grid 130 can be adjusted accordingly according to actual application requirements, and there is no special restriction here.

Optionally, the extension direction of the protrusions 121 on the refractive layer 120 is the same as the extension direction of the wire grid 130, and the distribution direction of the plurality of protrusions 121 is the same as the distribution direction of the plurality of wire grids 130, that is, between the plurality of protrusions 121 The distribution directions of the first gaps 122 and the second gaps 131 between the plurality of wire grids 130 are the same. This structural design makes the structure of the first refractive layer 120 that the light emitted from the same second gap 131 pass through is the same, thereby facilitating the control of the adjustment of the exit angle of the light emitted from the second gap 131 .

In some embodiments, the distribution direction of the plurality of protrusions 121 on the refractive layer 120 is at an angle with the distribution direction of the plurality of wire grids 130, that is, the extension direction of the protrusions 121 is at an included angle with the extension direction of the wire grids 130. That is, a wire grid 130 spans the area where multiple protrusions 121 are located, and the light emitted from a second gap 131 can simultaneously enter different protrusions 121 of the refractive layer 120 . Through the matching design of the protrusions 121, the exit angle of the outgoing light can be adjusted at multiple angles, thereby improving the diversity of angle adjustment.

Among them, the distribution direction of the plurality of protrusions 121 can be perpendicular to the distribution direction of the plurality of wire grids 130, that is, the included angle is 90°, or they can be set at other angles, as long as one observation point can receive the emitted light from different positions. That’s it, there are no special restrictions here.

Optionally, the first gaps 122 between the plurality of protrusions 121 and the second gaps 131 between the plurality of wire grids 130 are offset in the thickness direction of the base substrate 110 . Since the adjacent refractive layers 120 fill the first gaps 122 between the plurality of protrusions 121, this structural design allows the emitted light to reach the contact surface of the protrusions 121 of the two adjacent refractive layers 120 when it is emitted from the second gap 131. This achieves double refraction, which is beneficial to the adjustment of the exit angle and exit direction of the outgoing light.

When the first gaps 122 between the plurality of protrusions 121 and the second gaps 131 between the plurality of wire grids 130 are arranged correspondingly in the thickness direction of the base substrate 110 , the light emitted from the second gaps 131 passes through the first gap 131 . The gap 122 directly enters the protrusion 121 structure of another refractive layer 120. Compared with the staggered arrangement of the first gap 122 and the second gap 131, the number of refractions of the emitted light in this structural design is reduced to a certain extent, but It is easier to control the exit angle of the outgoing light.

Optionally, the base substrate 110 includes an opposite first side and a second side, a plurality of wire grids 130 are disposed on the first side, and a plurality of refractive layers 120 are sequentially disposed on the wire grids 130 , that is, the plurality of wire grids 130 The multi-layer refractive layer 120 and the multi-layer refractive layer 120 are sequentially distributed in the direction away from the first side of the base substrate 110. The wire grid 130 is located at the bottom of the multi-layer refractive layer 120, so that when the outgoing light entering the refractive layer 120 is reflected on the wire grid 130, it can It is reflected again into the refractive layer 120 to increase the light output of the color filter substrate 100 .

Among them, multiple wire grids 130 can also be located between two adjacent refractive layers 120, so that when the outgoing light passes through the wire grid 130, the reflected outgoing light can enter the refractive layer on the side of the wire grid 130 close to the substrate 110 again. 120, after being refracted multiple times by the refractive layer 120, it is emitted again, which can also increase the light emission amount of the color filter substrate 100.

Optionally, the color filter substrate 100 further includes a color resist layer 140. The color resist layer 140 is disposed on the second side. The color resist layer 140 includes a plurality of color resists. The colors of the plurality of color resists include red, green, blue and white. One or more of them are used to filter outgoing light. Through the cooperation of different color color resistors, the display needs of different display screens can be met.

In some embodiments, the partially refractive layer 120 is located on the second side of the substrate 110 , that is, the emitted light is filtered by the color resist layer 140 and then refracted in the partially refractive layer 120 , and then passes through the substrate 110 and enters the second side of the substrate 110 . Refraction is performed in the partial refractive layer 120 on one side to adjust the direction and angle of the outgoing light.

In other embodiments, the refractive layer 120 is entirely located on the second side of the base substrate 110 , that is, the outgoing light directly enters the refractive layer 120 after being filtered by the color resist layer 140 to adjust the angle and direction of the outgoing light, and then passes through the liner. The wire grid 130 on the first side of the base substrate 110 performs polarization analysis, and finally the color filter substrate 100 is emitted and received by the human eye.

Among them, the wire grid 130 can be disposed on the first side of the base substrate 110 or on the second side of the base substrate 110; at the same time, the wire grid 130 can be directly disposed on the base substrate 110 or can be disposed on an adjacent side. The specific arrangement between two adjacent refractive layers 120 can be adjusted according to design requirements, and is not limited here.

Secondly, embodiments of the present application provide a display panel. The display panel includes a color filter substrate. The specific structure of the color filter substrate refers to the above-mentioned embodiments. Since this display panel adopts all the technical solutions of all the above-mentioned embodiments, it at least has All the beneficial effects brought by the technical solutions of the above embodiments will not be repeated here.

FIG. 2 is a schematic structural diagram of a display panel 10 provided by an embodiment of the present application. As shown in FIG. 2 , the display panel 10 includes a color filter substrate 100 , an array substrate 200 and a liquid crystal layer 300 . The array substrate 200 is located on the second side of the base substrate 110 of the color filter substrate 100 , that is, the array substrate 200 is located on the side of the color filter substrate 100 where the color resist layer 140 is located.

During assembly, the array substrate 200 and the color filter substrate 100 are coupled to form a receiving cavity, and the liquid crystal layer 300 is filled in the receiving cavity between the color filter substrate 100 and the array substrate 200. The rotation of the liquid crystal molecules in the liquid crystal layer 300 is controlled by driving voltage regulation. , to form outgoing light rays with different outgoing angles and directions.

Optionally, in order to ensure that the liquid crystal layer 300 has sufficient accommodation space and that the color filter substrate 100 and the array substrate 200 are relatively stable, and to avoid unevenness or uneven heights on the surface of the display panel 10, it is necessary to add a gap between the color filter substrate 100 and the array substrate 200. Spacers 400 are provided at intervals to support the color filter substrate 100 and the array substrate 200 to ensure the flatness of the surface of the display panel 10 .

Finally, embodiments of the present application also provide a method for manufacturing the color filter substrate 100. As shown in Figure 3, the method for manufacturing the color filter substrate 100 mainly includes the following steps:

S100. Provide a base substrate 110. The substrate substrate 110 used may be a glass substrate or other types of substrates, and is used to support each film layer structure in the color filter substrate 100. Its specific material can be adjusted according to actual design requirements and is not limited here.

It should be noted that since the color filter substrate 100 is located entirely on the light exit side, in order to ensure the light extraction rate of the color filter substrate 100, the substrate substrate 110 used needs to have good light transmittance to avoid a large amount of loss when the light passes through the substrate substrate 110. , thereby improving the light extraction rate of the color filter substrate 100 .

S200. Form a plurality of wire grids 130 on the base substrate 110, and the plurality of wire grids 130 are arranged in parallel.

Specifically, as shown in FIG. 4 , a metal layer is first deposited on the base substrate 110 and then etched to form a plurality of wire grids 130 arranged in parallel. There is a second gap 131 between two adjacent wire grids 130. By adjusting the etching process, the position and size of the second gap 131 can be adjusted accordingly to meet different light extraction requirements.

S300. Multiple refractive layers 120 are sequentially formed on the base substrate 110. The refractive index of two adjacent refractive layers 120 is different. The refractive index of the refractive layer 120 close to the base substrate 110 in the multi-layer refractive layer 120 is different from that of the substrate. The refractive indices of the substrates 110 are different.

As shown in FIG. 5 , during the production process, multiple refractive layers 120 are sequentially deposited on the base substrate 110 by physical or chemical deposition, and the refractive index of the two adjacent refractive layers 120 is different. The refractive index of the refractive layer 120 close to the base substrate 110 is different from the refractive index of the base substrate 110, so that the exit angle of the outgoing light will change when passing through each refractive layer 120. After passing through the multiple refractive layers, The combined design of the refractive index of 120 allows the emitted light rays from different positions to converge to the same observation point, thereby improving the color shift problem at different observation points and improving the display effect of the color filter substrate 100 .

Optionally, in the process of forming the refractive layers 120 layer by layer, the surface of at least one of the refractive layers 120 is etched, so that a plurality of protrusions 121 are formed on the surface of the refractive layer 120 . Through the design of the etching process, the shape of the protrusion 121 can be adjusted to make the exit angles of the outgoing light more diverse, which is beneficial to the adjustment of the exit angle of the outgoing light.

After a plurality of protrusions 121 are formed on the surface of a certain layer, the subsequent adjacent refractive layers 120 are filled in the first gaps 122 of the plurality of protrusions 121 , that is, the subsequent adjacent refractive layers 120 are close to the plurality of protrusions 121 A protrusion 121 complementary to the refractive layer 120 is formed on one side of the refractive layer 120 , thereby making the adjustment of the exit angle and exit direction of the exit light more diverse.

It should be noted that the protrusions 121 can be formed on one side surface of any one or more refractive layers 120 or simultaneously on both sides of the refractive layer 120. The specific formation position can be designed and adjusted accordingly according to actual application requirements. There are no special restrictions here.

Optionally, during the production process of the color filter substrate 100, after completing the production of the wire grid 130 and the refractive layer 120, a color resist layer 140 needs to be formed on the base substrate 110 to complete the production of the color filter substrate 100. The color resistor layer 140 includes a plurality of color resistors, the colors of the plurality of color resistors include one or more of red, green, blue and white, and are used to filter outgoing light. Through the cooperation of different color color resistors, the display needs of different display screens can be met.

In some embodiments, the plurality of wire grids 130 and the multi-layer refractive layer 120 are located on the same side of the base substrate 110 , and the multiple wire grids 130 are located on a side of the multi-layer refractive layer 120 close to the base substrate 110 , and the color resist layer 140 is located on the other side of the base substrate 110 . That is, step S200 is first performed to form the wire grid 130 on the base substrate 110 , and then step S300 is performed to sequentially form multiple refractive layers 120 on the wire grid 130 .

In other embodiments, the multi-layer refractive layer 120 and the color resist layer 140 are located on the same side of the base substrate 110, and the multiple wire grids 130 are located on the other side of the base substrate 110, then the sequence of steps S200 and S300 can be based on Make adjustments to the production process. Alternatively, if the multi-layer refractive layers 120 are distributed on opposite sides of the base substrate 110, then step S200 is performed first and then step S300 is performed to simplify the process flow.

It should be noted that during the process of manufacturing the color filter substrate 100 , the order of steps S200 and S300 can be adjusted according to the arrangement positions of the wire grid 130 and the refractive layer 120 , that is, steps S200 and S300 only represent the manufacturing of the wire grid 130 respectively. The process of making the refractive layer 120 does not represent the order in which it is made. As the structure of the color filter substrate 100 changes, the order in which it is made will be adjusted accordingly.

The above is a detailed introduction to a color filter substrate, a display panel and a method for manufacturing a color filter substrate provided by the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The above embodiments The description is only used to help understand the methods and core ideas of this application; at the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of this application. In summary, The contents of this specification should not be construed as limiting this application.

Claims (8)

1. The utility model provides a various membrane base plate which characterized in that includes:

a substrate base plate having a first side and a second side opposite to each other;

a plurality of wire grids are arranged on the first side face in parallel, and a second gap is reserved between two adjacent wire grids;

the multi-layer refraction layers are sequentially arranged on the wire grid, and the refractive indexes of two adjacent refraction layers are different; the refractive index of the refractive layers close to the substrate in the multiple layers is different from that of the substrate; a plurality of protrusions are arranged on the surface of at least one refraction layer in parallel, and a first gap is formed between every two adjacent protrusions;

the extending direction of the protrusions is the same as the extending direction of the wire grids, the distribution direction of the protrusions is the same as the distribution direction of the wire grids, and the first gaps and the second gaps are arranged in a staggered manner in the thickness direction of the substrate;

the refractive indexes of the plurality of refractive layers gradually increase along the direction away from the substrate base plate; or, the refractive indexes of the multiple layers of the refractive layers gradually decrease along the direction away from the substrate base plate;

the thickness of the plurality of refraction layers gradually increases along the direction away from the substrate base plate; or, the thickness of the multiple refraction layers gradually decreases along the direction away from the substrate base plate;

the adjacent refraction layers are filled with first gaps among the plurality of bulges, so that emergent light rays are emitted from the gaps to reach the bulge contact surfaces of the adjacent two refraction layers, and two-side refraction is realized.

2. The color filter substrate according to claim 1, wherein the refractive indices of the plurality of refractive layers are different.

3. The color film substrate according to claim 1, wherein the cross-sectional area of the protrusions gradually increases in a direction approaching the substrate; or alternatively, the first and second heat exchangers may be,

the cross-sectional area of the protrusion gradually decreases in a direction approaching the substrate base plate.

4. The color film substrate of any one of claims 1-3, wherein the sum of thicknesses of the multiple refractive layers is greater than or equal to 10 nanometers and less than or equal to 3000 nanometers.

5. A color film substrate according to any one of claims 1 to 3, wherein the refractive layer comprises one or more of silicon oxide, silicon nitride and silicon oxynitride.

6. The color film substrate of claim 1, further comprising a color resist layer disposed on the second side.

7. A display panel, the display panel comprising:

the color film substrate of any one of claims 1 to 6;

the array substrate is positioned on the second side surface of the substrate in the color film substrate; and

And the liquid crystal layer is filled between the color film substrate and the array substrate.

8. The manufacturing method of the color film substrate is characterized by comprising the following steps:

providing a substrate, wherein the substrate is provided with a first side surface and a second side surface which are opposite;

forming a plurality of wire grids on the substrate, wherein the wire grids are arranged on the first side face in parallel, and a second gap is reserved between two adjacent wire grids;

sequentially forming a plurality of refraction layers on the substrate, wherein the refraction indexes of two adjacent refraction layers are different, and the refraction index of the refraction layer close to the substrate in the plurality of refraction layers is different from the refraction index of the substrate; a plurality of protrusions are arranged on the surface of at least one refraction layer in parallel, and a first gap is formed between every two adjacent protrusions;

the extending direction of the protrusions is the same as the extending direction of the wire grids, the distribution direction of the protrusions is the same as the distribution direction of the wire grids, and the first gaps and the second gaps are arranged in a staggered manner in the thickness direction of the substrate;

the refractive indexes of the plurality of refractive layers gradually increase along the direction away from the substrate base plate; or, the refractive indexes of the multiple layers of the refractive layers gradually decrease along the direction away from the substrate base plate;

the thickness of the plurality of refraction layers gradually increases along the direction away from the substrate base plate; or, the thickness of the multiple refraction layers gradually decreases along the direction away from the substrate base plate;

the adjacent refraction layers are filled with first gaps among the plurality of bulges, so that emergent light rays are emitted from the gaps to reach the bulge contact surfaces of the adjacent two refraction layers, and two-side refraction is realized.