CN103926742A - Color film substrate and liquid crystal display panel - Google Patents

Abstract

The invention discloses a color filter substrate and a liquid crystal display panel. The liquid crystal display panel comprises: a color filter substrate, an array substrate opposite to the color filter substrate, and a liquid crystal layer located between the color filter substrate and the array substrate. The liquid crystal display panel is divided into a display area and a peripheral area surrounding the display area; a black matrix is provided in the peripheral area inside the color filter substrate, and the black matrix has at least one opening, and the opening is provided on at least one side of the peripheral area, so The opening divides the black matrix on the side of the peripheral area into a part close to the display area and a part far away from the display area; corresponding to the opening, a first electrode and a second electrode are arranged inside the liquid crystal display panel. The present invention can prevent the influence of external static electricity on the display effect of the liquid crystal display panel by setting the opening; the first electrode and the second electrode corresponding to the opening can prevent light leakage from the opening, thereby improving the display effect of the liquid crystal display panel.

Description

A color filter substrate and a liquid crystal display panel

technical field

The invention relates to the field of display technology, in particular to a color filter substrate and a liquid crystal display panel.

Background technique

Liquid Crystal Display (LCD for short) has been widely used in products such as TVs, notebook computers and mobile phones due to its advantages of light and thin appearance, low power consumption and no radiation pollution. The liquid crystal display panel is a key component that directly affects the display effect of the liquid crystal display device.

FIG. 1 is a top view of a liquid crystal display panel in the prior art. As shown in FIG. 1, the liquid crystal display panel is divided into a display area 11 and a peripheral area 12 surrounding the display area 11. The display area 11 includes a plurality of pixel units 111 and a black matrix 112, wherein the black matrix 112 extends to the liquid crystal display panel. edge, and cover the peripheral area 12, which can well prevent the peripheral area 12 from leaking light. In addition, the liquid crystal display panel further includes a driving chip 13 to control the pixel units 111 in the display area 11 .

Since the black matrix 112 extends to the edge of the liquid crystal display panel, external static electricity is easily transmitted to the display area 11 through the black matrix 112, thereby affecting the display effect of the liquid crystal display panel, resulting in poor display of the screen, such as white or green.

Contents of the invention

In view of this, an embodiment of the present invention provides a color filter substrate and a liquid crystal display panel to solve the technical problem in the prior art that the black matrix conducts static electricity from the outside to cause poor display of the liquid crystal display panel.

In a first aspect, an embodiment of the present invention provides a liquid crystal display panel, including: a color filter substrate, an array substrate disposed opposite to the color filter substrate, and a liquid crystal layer located between the color filter substrate and the array substrate , the liquid crystal display panel is divided into a display area and a peripheral area surrounding the display area;

The peripheral area inside the color filter substrate is provided with a black matrix, and the black matrix has at least one opening. The matrix is divided into a part close to the display area and a part far away from the display area;

Corresponding to the opening, a first electrode and a second electrode are disposed inside the liquid crystal display panel.

In the second aspect, the embodiment of the present invention also provides a color filter substrate, the color filter substrate is divided into a display area and a peripheral area surrounding the display area, the peripheral area of the color filter substrate is provided with a black matrix, so The black matrix has at least one opening, and the opening is disposed on at least one side of the peripheral area.

The color filter substrate and the liquid crystal display panel provided by the embodiments of the present invention can prevent external static electricity from being conducted to the display area by providing openings in the black matrix in the peripheral area of the color filter substrate, thereby avoiding damage to the display effect of the liquid crystal display panel by external static electricity. Influence; Corresponding to the opening, the first electrode and the second electrode are arranged inside the liquid crystal display panel, and the liquid crystal molecules in the electric field area formed by the first electrode and the second electrode can be controlled to make it opaque, thereby preventing the opening from leaking light , and can improve the display effect of the liquid crystal display panel.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

1 is a top view of a liquid crystal display panel in the prior art;

FIG. 2 is a partial cross-sectional structural schematic diagram of a liquid crystal display panel according to Embodiment 1 of the present invention;

FIG. 3 is a wiring diagram of an array substrate according to Embodiment 1 of the present invention;

FIG. 4 is a wiring diagram of another array substrate according to Embodiment 1 of the present invention;

Fig. 5 is a schematic cross-sectional structure diagram along the A1-A2 direction in Fig. 4;

6 is a top view of a liquid crystal display panel according to Embodiment 1 of the present invention;

7 is a partial cross-sectional structural schematic diagram of another liquid crystal display panel according to Embodiment 1 of the present invention;

FIG. 8 is a schematic diagram of a partial cross-sectional structure of a liquid crystal display panel according to Embodiment 2 of the present invention;

FIG. 9 is a wiring diagram of an array substrate according to Embodiment 2 of the present invention;

Fig. 10 is a schematic cross-sectional structure diagram along the B1-B2 direction in Fig. 9;

FIG. 11 is a schematic diagram of a partial cross-sectional structure of a liquid crystal display panel according to Embodiment 3 of the present invention;

FIG. 12 is a wiring diagram of an array substrate according to Embodiment 3 of the present invention;

FIG. 13 is a schematic diagram of a partial cross-sectional structure of a liquid crystal display panel according to Embodiment 4 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

Embodiment 1 of the present invention provides a liquid crystal display panel. FIG. 2 is a schematic diagram of a partial cross-sectional structure of a liquid crystal display panel according to Embodiment 1 of the present invention. As shown in FIG. 2 , the liquid crystal display panel includes: a color filter substrate 21, an array substrate 22 disposed opposite to the color filter substrate 21, and a liquid crystal layer located between the color filter substrate 21 and the array substrate 22. 23. The liquid crystal display panel is divided into a display area 31 and a peripheral area 32 surrounding the display area 31 (the dotted line in the figure is used to divide the display area 31 and the peripheral area 32); the peripheral area inside the color filter substrate 21 32 is provided with a black matrix 241, the black matrix 241 has at least one opening 41, the opening 41 is arranged on at least one side of the peripheral area 32, and the opening 41 connects the black matrix of the side of the peripheral area 32 241 is divided into a portion 241a close to the display area and a portion 241b away from the display area; corresponding to the opening 41, a first electrode 42 and a second electrode 43 are arranged inside the liquid crystal display panel.

It should be noted that the black matrix 241 is schematically shown in FIG. 2 to have an opening 41, and a first electrode 42 and a second electrode 43 corresponding to the opening 41, but this is only the liquid crystal display panel The number of openings 41 of the black matrix 241 and the number of first electrodes 42 and second electrodes 43 corresponding to the openings 41 are not limited here.

In addition, in FIG. 2 , the liquid crystal display panel also includes a color resist 251 and a black matrix 242 located in the display area 31 inside the color filter substrate 21 ; and a pixel electrode 261 located in the display area 31 inside the array substrate 22 . These structures are all necessary parts for the normal display of the liquid crystal display panel.

Specifically, referring to FIG. 2 , the peripheral area 32 inside the color filter substrate 21 is provided with a black matrix 241 to prevent the peripheral area 32 from leaking light. The external ambient light is perceived by personnel after being reflected by the array substrate 22 . Further, in order to prevent the influence of external static electricity, the black matrix 241 in the peripheral area 32 is provided with an opening 41, and the opening 41 divides the black matrix 241 in the peripheral area 32 into a part 241a close to the display area and a part 241b away from the display area, That is, the side of the peripheral area 32 where the opening 41 is disposed, the black matrix 241 becomes two parts isolated from each other on this side. If external static electricity enters away from the display area part 241b, then because the display area part 241b away from the display area part 241a is isolated, the static electricity cannot be conducted to the black matrix 242 of the display area 31, and no damage caused by static electricity will occur. The electric field in the display area 31 is abnormal, so that the normal display effect of the display area 31 can be guaranteed.

Further, in order to prevent possible light leakage at the opening 41, corresponding to the opening 41, a first electrode 42 and a second electrode 43 are provided on the inner peripheral area 32 of the liquid crystal display panel, and the first electrode 42 and the second electrode The electrode 43 can control the rotation of the liquid crystal molecules 231 in the area corresponding to the opening 41 to ensure light-tightness, thereby preventing light leakage at the opening 41 .

In the first embodiment, please refer to FIG. 2 , the first electrode 42 is located inside the color filter substrate 21, and the second electrode 43 is located inside the array substrate 22. The first electrode 42 and the second electrode 43 form a TN The Twisted Nematic (twisted nematic) liquid crystal drive mode can control the rotation of the liquid crystal molecules 231 located in the region between the first electrode 42 and the second electrode 43 in the energized state.

In order to prevent conduction between the first electrode 42 and the black matrix 241 of the peripheral region 32, an insulating layer 44 is arranged between the first electrode 42 and the black matrix 241 of the peripheral region 32, so as to realize electrical insulation between the two, so that The opening 41 can well play the role of preventing external static electricity from being conducted to the display area 31 .

Optionally, the display area 31 inside the color filter substrate 21 is provided with a common electrode 27 , and the potential of the first electrode 42 and the common electrode 27 are the same. In Embodiment 1, since the first electrode 42 and the second electrode 43 form a TN-type liquid crystal driving mode, the liquid crystal driving mode provides a vertical electric field for the rotation of the liquid crystal molecules in the corresponding region, in order to make the liquid crystal molecules in the corresponding region impermeable At the same time, the influence of the potential of the first electrode 42 on the rotation of the liquid crystal molecules in the display area 31 can be avoided. The potential of the first electrode 42 can be set to be the same as the potential of the common electrode 27, that is, the potential of the first electrode 42 is the common voltage. potential. Preferably, the first electrode 42 and the common electrode 27 are connected together. In this way, not only can the common voltage be provided for the first electrode 42 and the common electrode 27 at the same time when the liquid crystal display panel is working, but also the number of control circuit wires can be reduced. Further, the part of the common electrode 27 extending to the peripheral area of the color filter substrate 21 can be used to form the first electrode 42 , which can reduce the size of the liquid crystal display panel and is suitable for products with smaller borders.

In addition, the potential of the first electrode 42 may not be the same as the potential of the common electrode 27, and may be set as necessary. However, referring to FIG. 2 , the first electrode 42 and the common electrode 27 can be formed at the same time. Preferably, the first electrode 42 can be made of the same material as the common electrode 27 , so that the process flow can be simplified and the cost can be reduced during the manufacturing process. It should be noted that, in the first embodiment, the potential of the first electrode 42 is not limited.

The potential of the second electrode 43 can be set as required, so that the electric field formed between the first electrode 42 and the second electrode 43 controls the rotation of the liquid crystal molecules located in the electric field region, ensuring that the liquid crystal molecules can be rotated when the liquid crystal display panel is working. The liquid crystal molecules in the region are opaque to prevent light leakage at the opening 41 .

FIG. 3 is a wiring diagram of an array substrate according to Embodiment 1 of the present invention. As shown in FIG. 3 , the display area 31 of the array substrate includes a plurality of scanning lines 262 and data lines 263, the plurality of scanning lines 262 and data lines 263 intersect to define a plurality of pixel units, and each pixel unit includes a pixel electrode 261 and a thin film transistor 264. Wherein, the gates of the thin film transistors 264 in two adjacent rows are respectively electrically connected to the corresponding scanning lines 262, and the corresponding scanning lines 262 respectively pass through the peripheral traces 265 of the scanning lines in the peripheral areas 32 located on both sides of the display area 31. It is electrically connected to the driver chip 29 . This method of arranging the peripheral traces 265 of the scan lines can effectively reduce the area of the peripheral region 32 , and can effectively reduce the area of the liquid crystal display panel when the area of the display region 31 remains unchanged. In addition, the source of each thin film transistor 264 is electrically connected to the data line 263 of the column, and the drain of each thin film transistor 264 is electrically connected to its corresponding pixel electrode 261; The peripheral traces 266 electrically connected to the scan lines 262 and the data lines are electrically connected to the data lines 263, and respectively transmit control signals to the pixel electrodes 261 to control the display of each pixel unit in the array substrate.

Referring to FIG. 3 , on the peripheral area 32 of the array substrate, there is also a strip-shaped second electrode 43, wherein the material of the second electrode 43 is metal, which can prevent the backlight from penetrating the second electrode 43 and reduce the light passing through the liquid crystal layer. light, thereby helping to prevent the opening 41 from leaking light; in addition, the second electrode 43 is located on the same layer as the peripheral wiring 265 of the scanning line, and is insulated from the peripheral wiring 265 of the scanning line (located on the second electrode in FIG. 3 The non-shaded area between the electrode 43 and the peripheral trace 265 of the scan line). Preferably, the same metal material is used for the second electrodes 43 and the peripheral traces 265 of the scan lines, so that the second electrodes 43 and the peripheral traces 265 of the scan lines can be formed together during the manufacturing process, thereby simplifying the process flow.

Further, the peripheral traces 265 of the scan lines can be used to form the second electrodes 43 . The liquid crystal display panel can be divided into a normally black mode and a normally white mode according to the state it is in when it is not powered on. In the normally black mode, when no power is applied, the liquid crystal display panel is opaque, that is, it is in a black screen state; in the normally white mode, when no power is applied, the liquid crystal display panel is transparent, that is, it is in a white screen state. state. If the peripheral wiring 265 of the scanning line is used to form the second electrode 43, on the one hand, for the normally black mode, the potential of the first electrode 42 can be set to the potential of the peripheral wiring 265 of the scanning line or close to the peripheral wiring of the scanning line 265 potential, when the liquid crystal display panel is working, the first electrode 42 and the second electrode 43 cannot rotate the liquid crystal molecules located between the two electrodes, so that the peripheral area of the liquid crystal display panel remains in a black screen state, thereby preventing Light leakage at the opening 41; on the other hand, for the normally white mode, the potential of the first electrode 42 can be set to the potential of the common electrode 27. When the liquid crystal display panel is working, the first electrode 42 and the second electrode 43 can make the two electrodes The liquid crystal molecules between them rotate, so that the peripheral area of the liquid crystal display panel is in a black screen state, thereby preventing light leakage from the opening 41 . The size of the liquid crystal display panel can be reduced by using the peripheral wiring 265 of the scanning line to form the second electrode 43 , and it is suitable for products with smaller borders.

FIG. 4 is a wiring diagram of another array substrate according to Embodiment 1 of the present invention. As shown in FIG. 4 , the routing of the array substrate is consistent with the routing of the array substrate in FIG. 3 , and will not be repeated here. In addition, the peripheral area 32 of the array substrate has strip-shaped second electrodes 43, and the second electrodes 43 are made of transparent conductive materials, such as indium tin oxide (Indium Tin Oxide, ITO for short), indium zinc oxide (Indium Zinc Oxide, IZO for short) or a combination of the two. Since the transparent conductive material can transmit light, in order to reduce light passing through the second electrode 43 as much as possible to better prevent light leakage from the opening 41, preferably, in the direction of light transmission, the second electrode 43 can be blocked by metal, for example The second electrode 43 may be disposed above the peripheral trace 265 of the scan line. This can not only reduce light passing through the second electrode 43, but also reduce the area of the peripheral region 32, thereby reducing the area of the liquid crystal display panel. In FIG. 4 , as a specific example, the second electrode 43 is disposed above the peripheral trace 265 of the scan line. FIG. 5 is a schematic cross-sectional structure diagram along the A1-A2 direction in FIG. 4. As shown in FIG. An insulating layer 44 is provided between them to electrically insulate the second electrode 43 from the peripheral wiring 265 of the scan line.

It should be noted that FIG. 3 and FIG. 4 only schematically show the layout of the wires on the array substrate and the arrangement of the second electrodes 43 , and the number of wires on the array substrate and the number of the second electrodes 43 are not limited here.

FIG. 6 is a top view of a liquid crystal display panel according to Embodiment 1 of the present invention. Optionally, as shown in FIG. 6 , at least one opening 41 is provided on the adjacent two sides of the peripheral region 32 , the openings 41 on the adjacent two sides are connected together, and the first electrodes on the adjacent two sides are connected together (not shown in the figure), and the second electrodes on adjacent two sides are connected together (not shown in the figure). It should be noted that, in FIG. 6, the openings 41 are arranged on the upper side, left side and right side of the peripheral area 32, and the openings 41 on adjacent two sides are connected together, which is only a specific embodiment of the present invention. example. Of course, optionally, an opening may also be provided on the lower side, so as to form a ring-shaped opening surrounding the display area 31 .

In addition, the openings 42 on adjacent two sides are connected together, at the same time, the first electrodes on adjacent two sides are connected together, and the second electrodes on adjacent two sides are connected together, so as to facilitate the application of control signals, and can Reduce the number of traces for the control circuit.

FIG. 7 is a partial cross-sectional structural schematic diagram of another liquid crystal display panel according to Embodiment 1 of the present invention. Optionally, referring to FIG. 7 , a color resist 252 is provided at the opening 41 inside the color filter substrate 21 . In addition, the color resistance 252 is located between the black matrix 241 and the first electrode 43 in the peripheral area 32, which can electrically insulate the black matrix 241 and the first electrode 43, so that the opening 41 can well prevent external Static electricity conducts to the display area 31 . It should be noted that the color resistance 252 can be a blue color resistance, a red color resistance or a green color resistance, or a superposition of a red color resistance, a green color resistance and a blue color resistance, and the present invention does not limit the color resistance 252 . By arranging the color resist 252 at the opening 41 , the light intensity of the light leakage at the opening 41 can be weakened, so that the influence of the light leakage on the display effect of the liquid crystal display panel can be reduced.

Optionally, referring to FIG. 2 and FIG. 7 , an alignment film layer 28 is provided inside the color filter substrate 21 and the array substrate 22 respectively, and the alignment film layer 28 extends from the display area 31 to the peripheral area. 32, and cover the opening 41, the first electrode 42 and the second electrode 43. If the alignment film layer 28 extends to the peripheral region 32 and covers the opening 41, the first electrode 42 and the second electrode 43, in the case of no voltage applied to the first electrode 42 and the second electrode 43, the effect of the alignment film layer 28 Next, the liquid crystal molecules 231 located between the first electrode 42 and the second electrode 43 will be in a regular arrangement state, which is beneficial to the liquid crystal molecules 231 located between the two electrodes when a voltage is applied to the first electrode 42 and the second electrode 43. The rotation of the liquid crystal molecules 231 is controlled, so that it is relatively easy to prevent light leakage from the opening 41 . The liquid crystal display panel provided by Embodiment 1 of the present invention can prevent external static electricity from being transmitted to the display area by providing openings in the black matrix in the peripheral area of the color filter substrate, thereby avoiding the influence of external static electricity on the display effect of the liquid crystal display panel; and Corresponding to the opening, the first electrode is set inside the color filter substrate and the second electrode is set inside the array substrate to form a TN-type liquid crystal driving mode, and the liquid crystal molecules in the electric field area formed by the first electrode and the second electrode can be controlled so that It is opaque, thereby preventing light leakage from the opening, and improving the display effect of the liquid crystal display panel.

Embodiment 2 of the present invention also provides a liquid crystal display panel. FIG. 8 is a schematic diagram of a partial cross-sectional structure of a liquid crystal display panel according to Embodiment 2 of the present invention. Referring to FIG. 8 , the embodiment of the present invention is the same as that of the first embodiment in FIG. 2 and FIG. 7 regarding the setting of the opening 41 , the difference is that the first electrode 42 and the second electrode 43 are located inside the array substrate 22 . Optionally, the first electrode 42 is a planar electrode, the second electrode 43 is a plurality of strip electrodes, the second electrode 43 is located above the first electrode 42, and between the second electrode 43 and the first electrode 42 An insulating layer 45 is provided between them. The insulating layer 45 maintains electrical insulation between the first electrode 42 and the second electrode 43 .

It should be noted that the black matrix 241 is schematically shown in FIG. 8 to have an opening 41 and two strip-shaped second electrodes 43 corresponding to the opening 41, but this is only one type of the liquid crystal display panel. The structure is not limited here regarding the number of openings 41 of the black matrix 241 and the number of strip-shaped second electrodes 43 corresponding to the openings 41 .

Referring to FIG. 8, since the first electrode 42 and the second electrode 43 are located inside the array substrate 22, and the second electrode 43 is located above the first electrode 42, the first electrode 42 and the second electrode 43 form an FFS (Fringe Field Switching, fringe field switch type) liquid crystal drive mode, this type of liquid crystal drive mode is a wide viewing angle drive mode developed by the liquid crystal industry to solve large-size, high-definition desktop monitors and LCD TV applications. In the second embodiment of the present invention, the rotation of the liquid crystal molecules 231 in the electric field region formed by the first electrode 42 and the second electrode 43 can be controlled under the energized state through the FFS liquid crystal driving mode.

As described in the first embodiment, the liquid crystal display panel can be divided into a normally black mode and a normally white mode according to the state when it is not powered on. In order to better reduce the black state of the liquid crystal display panel and prevent light leakage at the opening 41 , the liquid crystal display panel in the FFS liquid crystal driving mode usually adopts a normally black mode. In the normally black mode, preferably, the opening 41 is located in the middle of the two second electrodes 43 to prevent the voltage of the second electrodes 43 from being affected by other voltages, so that the voltage difference between the first electrodes 42 and the second electrodes 43 is not 0. Even if the voltage difference between the first electrode 42 and the second electrode 43 is not 0 due to the influence of other voltages, the transmittance of the light located in the middle of the two second electrodes 43 is the lowest, which can better Prevent light leakage at the opening 41.

Preferably, the array substrate 22 has a common electrode 27 inside, and the potential of the first electrode 42 and the common electrode 27 is the same. In the second embodiment, since the first electrode 42 and the second electrode 43 form an FFS type liquid crystal driving mode, in order to make the liquid crystal molecules in the electric field region formed by the first electrode 42 and the second electrode 43 opaque and avoid the second The potential of an electrode 42 affects the rotation of liquid crystal molecules in the display area 31. The potential of the first electrode 42 can be set to be the same as the potential of the common electrode 27, that is, the potential of the first electrode 27 is the potential of the common voltage. It is more convenient to apply a control signal to the first electrode 42 . Further, in the case of a small space in the peripheral area 32, the first electrode 42 can be set as the peripheral wiring of the common electrode 27; in the case of a large space in the peripheral area 32, the common electrode 27 can be extended to The peripheral region 32 is used as the first electrode 42 . By setting the first electrode 42 as the peripheral wiring of the common electrode 27 or the part where the common electrode 27 extends to the peripheral area 32, on the one hand, in the process of making the first electrode 42, the process flow can be simplified and the cost can be reduced; on the other hand, On the one hand, the size of the liquid crystal display panel can be reduced, and it is suitable for products with a smaller frame.

In addition, the potential of the first electrode 42 may not be the same as the potential of the common electrode 27, and may be set as necessary. However, referring to FIG. 8 , the first electrode 42 and the common electrode 27 can be formed at the same time. Preferably, the first electrode 42 and the common electrode 27 can be made of the same material, so that the process flow can be simplified and the cost can be reduced during the manufacturing process. It should be noted that, in the second embodiment, the potential of the first electrode 42 is not limited.

The potential of the second electrode 43 can be set as required, so that the electric field formed between the first electrode 42 and the second electrode 43 controls the rotation of the liquid crystal molecules located in the electric field region, ensuring that the liquid crystal molecules can be rotated when the liquid crystal display panel is working. The liquid crystal molecules in the region are opaque to prevent light leakage at the opening 41 .

FIG. 9 is a wiring diagram of an array substrate according to Embodiment 2 of the present invention. As shown in FIG. 9 , the wiring of the array substrate in Embodiment 2 is similar to that of the array substrate in Embodiment 1, and will not be repeated here. repeat. A first electrode 42 and a second electrode 43 above it are disposed on the peripheral region 32 of the array substrate, and an insulating layer (not shown in FIG. 9 ) is disposed between the first electrode 42 and the second electrode 43, In order to maintain electrical insulation between the first electrode 42 and the second electrode 43 . FIG. 10 is a schematic cross-sectional structure diagram along the B1-B2 direction in FIG. 9 . As shown in FIG. 10 , an insulating layer 45 is disposed between the first electrode 42 and the second electrode 43 .

It should be noted that FIG. 10 only schematically shows the wiring of the array substrate and the arrangement of the first electrodes 42 and the second electrodes 43, and the number of wiring of the array substrate and the number of the second electrodes 43 are not limited here. .

Optionally, at least one opening is provided on adjacent two sides of the peripheral region, the openings on adjacent two sides are connected together, the first electrodes on adjacent two sides are connected together, and the adjacent two sides The second electrodes are connected together. In the second embodiment, the way of setting the opening, the first electrode and the second electrode is similar to the related description of the first embodiment, and will not be repeated here.

Optionally, referring to FIG. 8 , a color resist 252 is provided at the opening 41 inside the color filter substrate 22 . In the second embodiment, the disposing of the color resist 252 at the opening 41 is similar to the relevant description of the first embodiment, and will not be repeated here.

Optionally, referring to FIG. 8 , an alignment film layer 28 is provided inside the color filter substrate 21 and the array substrate 22 respectively, and the alignment film layer 28 extends from the display area 31 to the peripheral area 32 , and The opening 41 , the first electrode 42 and the second electrode 43 are covered. In the second embodiment, the method for setting the alignment film layer 28 and related effects are similar to those described in the first embodiment, and will not be repeated here.

The liquid crystal display panel provided by Embodiment 2 of the present invention can prevent external static electricity from being transmitted to the display area by providing openings to the black matrix in the peripheral area of the color filter substrate, thereby avoiding the influence of external static electricity on the display effect of the liquid crystal display panel; and Corresponding to the opening, the first electrode and the second electrode above the first electrode are arranged inside the array substrate to form an FFS liquid crystal driving mode, and the liquid crystal molecules in the electric field area formed by the first electrode and the second electrode can be controlled so that It is opaque, thereby preventing light leakage from the opening, and improving the display effect of the liquid crystal display panel.

Embodiment 3 of the present invention also provides a liquid crystal display panel. FIG. 11 is a schematic diagram of a partial cross-sectional structure of a liquid crystal display panel according to Embodiment 3 of the present invention. Referring to FIG. 11 , Embodiment 3 of the present invention is the same as Embodiment 1 and Embodiment 2 regarding the setting of the opening 41 . The difference from Embodiment 1 is that the first electrode 42 and the second electrode 43 are located on the array substrate 22 The inner side; the difference from the second embodiment is that the first electrode 42 and the second electrode 43 are strip electrodes, and the first electrode 42 and the second electrode 43 are arranged in parallel, and the first electrode 42 and the second electrode 43 are arranged in parallel. A gap is provided between the two electrodes 43 and they are electrically insulated (the electrical insulation is realized by the insulating layer 46 in FIG. 11 ).

It should be noted that the black matrix 241 is schematically shown in FIG. 11 to have an opening 41, and a first electrode 42 and a second electrode 43 corresponding to the opening 41, but this is only the liquid crystal display panel The number of openings 41 of the black matrix 241 and the number of first electrodes 42 and second electrodes 43 corresponding to the openings 41 are not limited here.

In the third embodiment, referring to FIG. 11 , since the first electrode 42 and the second electrode 43 are both arranged inside the array substrate 22, and the first electrode 42 and the second electrode 43 are arranged in parallel, therefore, the first electrode 42 and the second The electrode 43 forms an IPS (In-Plane Switching) liquid crystal driving mode. This type of liquid crystal driving mode is also a wide viewing angle driving mode developed by the liquid crystal industry to solve large-size, high-definition desktop monitors and LCD TV applications. . In the third embodiment of the present invention, the rotation of the liquid crystal molecules 231 in the electric field region formed by the first electrode 42 and the second electrode 43 can be controlled under the energized state through the IPS liquid crystal driving mode.

As described in Embodiment 1 and Embodiment 2, the liquid crystal display panel can be divided into a normally black mode and a normally white mode according to the state when it is not powered on. In order to better reduce the black state of the liquid crystal display panel and prevent light leakage at the opening 41 , the liquid crystal display panel in the IPS liquid crystal driving mode usually adopts a normally black mode. In the normally black mode, preferably, the opening 41 is located in the middle of the adjacent first electrode 42 and the second electrode 43, so as to prevent the voltage of the first electrode 42 and the second electrode 43 from being affected by other voltages, so that the first The voltage difference between the electrode 42 and the second electrode 43 is not zero. Even if the voltage difference between the first electrode 42 and the second electrode 43 is not 0 due to the influence of other voltages, the transmittance of the light located in the middle of the adjacent first electrode 42 and the second electrode 43 is the lowest Yes, this can better prevent light leakage at the opening 41.

Preferably, the array substrate 22 has a common electrode 27 inside, and the potential of the first electrode 42 and the common electrode 27 is the same. In the third embodiment, since the first electrode 42 and the second electrode 43 form an IPS liquid crystal driving mode, in order to make the liquid crystal molecules in the electric field area formed by the first electrode 42 and the second electrode 43 opaque while avoiding the first The potential of an electrode 42 affects the rotation of liquid crystal molecules in the display area 31. The potential of the first electrode 42 can be set to be the same as the potential of the common electrode 27, that is, the potential of the first electrode 27 is the potential of the common voltage. It is more convenient to apply a control signal to the first electrode 42 .

In addition, the potential of the first electrode 42 may not be the same as the potential of the common electrode 27, and may be set as necessary. It should be noted that, in the third embodiment, the potential of the first electrode 42 is not limited.

The potential of the second electrode 43 can be set as required, so that the electric field formed between the first electrode 42 and the second electrode 43 controls the rotation of the liquid crystal molecules located in the electric field region, ensuring that the liquid crystal molecules can be rotated when the liquid crystal display panel is working. The liquid crystal molecules in the region are opaque to prevent light leakage at the opening 41 .

Optionally, the opening 41 and the gap between the first electrode 42 and the second electrode 43 overlap in the light transmission direction. Since the electric field formed by the two electrodes located in the gap between the first electrode 42 and the second electrode 43 is relatively weak, the rotation of the liquid crystal molecules 231 in the gap can be better controlled. If the position where the opening 41 is set overlaps with the gap in the direction of light transmission, the rotation of the liquid crystal molecules 231 at the gap can be better controlled to better prevent light leakage from the opening 41 .

Preferably, referring to FIG. 11 , a shielding layer 47 is further disposed inside the array substrate 22 , and the shielding layer 47 is disposed at least in adjacent gaps between the first electrode 42 and the second electrode 43 . Since the adjacent gaps between the first electrode 42 and the second electrode 43 inevitably have wiring bridging and other settings, this setting may cause steps to appear on the edges of the electrodes, and light leakage may occur at the steps. Therefore, in order to avoid If light leakage occurs at the step, a shielding layer 47 needs to be provided to block light at the step. Further, the shielding layer 47 is an amorphous silicon light shielding layer or a metal light shielding layer. Preferably, the shielding layer 47 is an amorphous silicon light shielding layer. Because the metal light-shielding layer can reflect light, when the shielding layer 47 is a metal light-shielding layer, the light that shines on it from above the metal light-shielding layer will be reflected, for example, the light that hits the inner wall of the opening 41 is reflected and shines on the metal. and be reflected on the light-shielding layer, which can cause light leakage from the opening 41. However, the light-absorbing layer of amorphous silicon is better for light. If the shielding layer 47 is an amorphous silicon light-shielding layer, it can greatly weaken or even Avoid light leakage from the opening 41 due to reflection.

FIG. 12 is a wiring diagram of an array substrate according to Embodiment 3 of the present invention. As shown in FIG. 12 , the wiring of the array substrate in Embodiment 3 is similar to that of the array substrate in Embodiment 1, and will not be repeated here. repeat. A strip-shaped first electrode 42 and a strip-shaped second electrode 43 are provided on the peripheral area 32 of the array substrate, wherein the first electrode 42 is close to the display area 31 and is close to the peripheral wiring 265 of the scanning line in the peripheral area 32 , the second electrode 43 is far away from the display area 31 . An insulating layer 46 is located between the first electrode 42 and the second electrode 43 to electrically insulate the first electrode 42 and the second electrode 43 .

It should be noted that FIG. 12 only schematically shows the wiring of the array substrate and the arrangement of the first electrodes 42 and the second electrodes 43. Regarding the number of wiring of the array substrate and the arrangement of the first electrodes 42 and the second electrodes 43 The number is not limited here.

The potential of the first electrode 42 and the common electrode 27 may be the same, so that the potential of the first electrode 42 may be a low potential. Furthermore, since the peripheral wiring 265 of the scanning line is at a low potential for a long time, in the third embodiment, the first electrode 42 can also be set as the peripheral wiring 265 of the scanning line, so that the potential of the first electrode 42 is low potential. In this way, in the process of manufacturing the first electrode 42, the process flow can be simplified and the cost can be reduced.

Optionally, at least one opening is provided on adjacent two sides of the peripheral region, the openings on adjacent two sides are connected together, the first electrodes on adjacent two sides are connected together, and the adjacent two sides The second electrodes are connected together. In the third embodiment, the manner of setting the opening, the first electrode, and the second electrode is similar to the relevant descriptions of the first and second embodiments, and will not be repeated here.

Optionally, referring to FIG. 11 , a color resist 252 is provided at the opening 41 inside the color filter substrate 22 . In the third embodiment, the disposing of the color resist 252 at the opening 41 is similar to the relevant descriptions of the first and second embodiments, and will not be repeated here.

Optionally, referring to FIG. 11 , an alignment film layer 28 is provided inside the color filter substrate 21 and the array substrate 22 respectively, and the alignment film layer 28 extends from the display area 31 to the peripheral area 32 , and The opening 41 , the first electrode 42 and the second electrode 43 are covered. In the third embodiment, the setting method and related functions of the alignment film layer 28 are similar to the relevant descriptions in the first and second embodiments, and will not be repeated here.

The liquid crystal display panel provided by Embodiment 3 of the present invention can prevent external static electricity from being transmitted to the display area by setting openings in the black matrix in the peripheral area of the color filter substrate, thereby avoiding the influence of external static electricity on the display effect of the liquid crystal display panel; and Corresponding to the opening, the first electrode and the second electrode arranged parallel to the first electrode are arranged inside the array substrate to form an IPS liquid crystal driving mode, which can control the liquid crystal molecules in the electric field area formed by the first electrode and the second electrode to Making it opaque can prevent light leakage from the opening and improve the display effect of the liquid crystal display panel.

Embodiment 4 of the present invention provides a color filter substrate. FIG. 13 is a schematic diagram of a partial cross-sectional structure of a liquid crystal display panel according to Embodiment 4 of the present invention. Referring to FIG. 13 , the color filter substrate 21 is divided into a display area 31 and a peripheral area 32 surrounding the display area 31 (the dotted line in the figure is used to divide the display area 31 and the peripheral area 32 ). The area 32 is provided with a black matrix 241 having at least one opening 41 disposed on at least one side of the peripheral area 32 . Wherein, the opening 41 divides the black matrix 241 on the side of the peripheral area 32 into a portion 241 a close to the display area and a portion 241 b away from the display area.

It should be noted that the black matrix 241 is schematically shown to have one opening 41 in FIG. Not limited.

In addition, in FIG. 13 , the color filter substrate 21 also includes a color resist 251 located in the display area 31 and a black matrix 242 located in this area. These structures are essential parts for the color filter substrate 21 to perform normal display.

Specifically, referring to FIG. 13 , the peripheral area 32 inside the color filter substrate 21 is provided with a black matrix 241 to prevent light leakage from the peripheral area 32 . on the black matrix 242, thereby affecting the display effect of the corresponding liquid crystal display panel. Further, in order to prevent the influence of external static electricity, the black matrix 241 in the peripheral area 32 is provided with an opening 41, and the opening 41 divides the black matrix 241 in the peripheral area 32 into a part 241a close to the display area and a part 241b away from the display area, That is, the side of the peripheral area 32 where the opening 41 is disposed, the black matrix 241 becomes two parts isolated from each other on this side. If external static electricity enters away from the display area part 241b, then because the display area part 241b away from the display area part 241a is isolated, the static electricity cannot be conducted to the black matrix 242 of the display area 31, and no damage caused by static electricity will occur. The electric field in the display area 31 is abnormal, so that the normal display effect of the display area 31 can be guaranteed.

Optionally, a color resistance 252 is provided at the opening 41 . Although the opening 41 can prevent external static electricity from being transmitted to the display area 31 through the black matrix 241 , the existence of the opening 41 may also cause light leakage, thereby affecting the display effect of the liquid crystal display panel. By arranging the color resist 252 at the opening 41 , the light intensity of the light leakage at the opening 41 can be weakened, so that the influence of the light leakage on the display effect of the liquid crystal display panel can be reduced. It should be noted that the color resistance 252 can be a blue color resistance, a red color resistance or a green color resistance, or a superposition of a red color resistance, a green color resistance and a blue color resistance, and the present invention does not limit the color resistance 252 .

The above-mentioned color filter substrate 21 can be applied in liquid crystal display panels with liquid crystal driving modes such as TN type, FFS type, and IPS type.

The color filter substrate provided in Embodiment 4 of the present invention can prevent external static electricity from being conducted to the display region and affect the electric field of the region by providing openings to the black matrix in the peripheral region of the color filter substrate, thereby ensuring the display effect of the display region.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (16)

1. A liquid crystal display panel, characterized in that it comprises: a color filter substrate, an array substrate arranged opposite to the color filter substrate, a liquid crystal layer positioned between the color filter substrate and the array substrate, and the liquid crystal The display panel is divided into a display area and a peripheral area surrounding the display area; The peripheral area inside the color filter substrate is provided with a black matrix, and the black matrix has at least one opening. The matrix is divided into a part close to the display area and a part far away from the display area; Corresponding to the opening, a first electrode and a second electrode are disposed inside the liquid crystal display panel. 2. The liquid crystal display panel according to claim 1, wherein the first electrode is located inside the color filter substrate, and the second electrode is located inside the array substrate. 3 . The liquid crystal display panel according to claim 2 , wherein a common electrode is disposed inside the color filter substrate, and the potential of the first electrode and the common electrode are the same. 4 . 4. The liquid crystal display panel according to claim 3, wherein the first electrode and the common electrode are connected together. 5. The liquid crystal display panel according to claim 1, wherein the first electrode and the second electrode are located inside the array substrate. 6. The liquid crystal display panel according to claim 5, wherein the first electrode is a planar electrode, the second electrode is a plurality of strip electrodes, the second electrode is located above the first electrode, and the second electrode is An insulating layer is arranged between the second electrode and the first electrode. 7. The liquid crystal display panel according to claim 5, wherein the first electrode and the second electrode are strip electrodes, and the first electrode and the second electrode are arranged in parallel, and the first electrode A gap is provided between the second electrode and the second electrode and is electrically insulated. 8 . The liquid crystal display panel according to claim 7 , wherein the opening overlaps with the gap between the first electrode and the second electrode in the direction of light transmission. 9 . The liquid crystal display panel according to claim 5 , wherein a common electrode is provided on the inner side of the array substrate, and the electric potential of the first electrode and the common electrode are the same. 10. The liquid crystal display panel according to claim 1, wherein at least one opening is provided on adjacent two sides of the peripheral region, the openings on adjacent two sides are connected together, and the adjacent two sides are connected together. The first electrodes on the two adjacent sides are connected together, and the second electrodes on adjacent two sides are connected together. 11. The liquid crystal display panel according to claim 1, wherein a color resist is provided at the opening inside the color filter substrate. 12. The liquid crystal display panel according to claim 7, wherein a shielding layer is further arranged inside the array substrate, and the shielding layer is arranged at least on adjacent sides of the first electrode and the second electrode. gap. 13. The liquid crystal display panel according to claim 12, wherein the shielding layer is an amorphous silicon light shielding layer or a metal light shielding layer. 14. The liquid crystal display panel according to claim 1, wherein an alignment film layer is respectively provided inside the color filter substrate and the array substrate, and the alignment film layer extends from the display area to the outer periphery area, and cover the opening, the first electrode and the second electrode. 15. A color filter substrate, characterized in that the color filter substrate is divided into a display area and a peripheral area surrounding the display area, the peripheral area of the color filter substrate is provided with a black matrix, and the black matrix has at least An opening is provided on at least one side of the peripheral area. 16. The color filter substrate according to claim 15, wherein a color resistance is provided at the opening.