CN106526994A - display panel - Google Patents

Abstract

The invention relates to a display panel, comprising a first substrate, a second substrate and a liquid crystal layer which are opposite, wherein the liquid crystal layer is arranged between the first substrate and the second substrate, and the display panel also comprises: a plurality of pixel structures disposed on the first surface of the first substrate, each pixel structure including a first driving electrode, the first driving electrode including a first connection portion, a plurality of first branch electrodes and a plurality of first end electrodes, a first end of each first branch electrode being electrically connected to the first connection portion, a second end of each first branch electrode being electrically connected to the first end electrode, the first end being opposite to the second end; the black matrix is arranged on the second surface of the second substrate, the second surface is opposite to the first surface, the black matrix has a vertical projection on the first surface in the thickness direction of the first substrate, and the first connecting part is partially overlapped with the vertical projection. The display panel provided by the invention has high light transmittance.

Description

display panel

technical field

The invention belongs to the field of display technology, and relates to a liquid crystal display panel driven by a horizontal electric field.

Background technique

At present, the market is oriented toward high contrast ratio, no gray scale inversion, high brightness, and high color saturation for TFT liquid crystal display panels. , rapid response (response) and wide viewing angle (viewing angle) and other directions. Currently common wide viewing angle technologies include twisted nematic liquid crystal (TN) plus wide viewing film (wide viewing film), in-plane switching (In-Plane Switching, IPS) liquid crystal display panel, fringe field switching (Fringe Field Switching) , FFS) liquid crystal display panel and multi-domain vertical alignment (Multi-domain Vertical Alignment, MVA) liquid crystal display panel.

In-Plane Switching (IPS) liquid crystal display panels generate a plane electric field between the electrodes of the pixels in the same plane, so that the aligned liquid crystal molecules between the electrodes and directly above the electrodes can be rotated in the direction parallel to the plane of the substrate. , so as to improve the light transmission efficiency of the liquid crystal layer. At the same time, when encountering external pressure, the molecular structure sinks slightly downwards, but the overall molecules are still horizontal, so there will be no picture distortion and affect the color of the picture, which can protect the screen to the greatest extent. The picture effect is not damaged. In-Plane Switching (IPS) liquid crystal display panels are widely used in various fields due to their advantages such as fast response speed, large viewing angle, no watermark on touch, and true color.

Currently, the driving electrodes in the pixel structure of the In-Plane Switching (IPS) LCD panel are limited by the arrangement of the driving electrodes and the manufacturing process tolerance. The edges of the driving electrodes are aligned with the edges of the black matrix, so that the existing pixels The opening and light transmittance are not high. Therefore, compared with the traditional arrangement of pixel layout and driving electrodes, it is necessary to propose a new pixel structure to reduce light absorption by the driving electrodes in the pixel structure, so as to increase the light transmittance of the liquid crystal display panel.

Contents of the invention

In order to improve the light transmittance of an in-plane switching (In-Plane Switching, IPS) liquid crystal display panel, the present invention provides a display panel, including a first substrate and a second substrate opposite to each other and a liquid crystal layer, and the liquid crystal layer is arranged on the Between the first substrate and the second substrate, the display panel further includes: a plurality of pixel structures disposed on the first surface of the first substrate, the pixel structures include a first driving electrode, and the first driving electrode includes a first driving electrode. A connection part, a plurality of first branch electrodes and a plurality of first end electrodes, the first end of each first branch electrode is electrically connected to the first connection part, and the second end of each first branch electrode Electrically connected to the first end electrode, the first end is opposite to the second end; a black matrix is disposed on the second surface of the second substrate, the second surface is opposite to the first surface, on the In the thickness direction of the first substrate, the black matrix has a vertical projection on the first surface, and the first connecting portion partially overlaps with the vertical projection.

Optionally, the first connection part includes electrically connecting the first section and the second section, the first section and the second section have a first angle, and the first angle is greater than 90°; the The first branch electrode includes a first branch and a second branch separated from each other, the first branch is electrically connected to the first section, and the first branch and the first section have a second angle, the second section The angle is less than 90°, the second branch is electrically connected to the second section, and the second branch and the second section have a third angle, and the third angle is greater than 90°.

Optionally, the pixel structure further includes a data line extending along a first direction, the first branch has a fourth angle with the first direction, and the first segment has a fourth angle with the first direction. Five included angles, there is a sixth included angle between the second section and the first direction, and the fifth included angle is equal to the sixth included angle.

Optionally, the fourth included angle is 45°.

Optionally, the fifth included angle is 30°.

Optionally, the pixel structure further includes a second driving electrode separated from the first driving electrode, and the second driving electrode includes a second connection part, a plurality of second branch electrodes and a plurality of second end electrodes, each The third end of the second branch electrode is electrically connected to the second connection part, the fourth end of each second branch electrode is electrically connected to the second end electrode, the third end is opposite to the fourth end, The second connecting portion partially overlaps with the vertical projection.

Optionally, the liquid crystal layer includes polymer-stabilized blue-phase liquid crystal molecules, and the first driving electrode and the second driving electrode are used to form a horizontal electric field to drive the polymer-stabilized blue-phase liquid crystal molecules to rotate for display.

Optionally, the pixel structure further includes a gate line, the gate line and the data line are perpendicular to each other, and the first connection portion and the second connection portion partially overlap the data line and the gate line respectively.

Optionally, the first end electrode and the second end electrode are diamond-shaped structures respectively.

Optionally, the first connecting portion has a first outer edge, the second connecting portion has a second outer edge, and the first outer edge and the second outer edge are non-linear.

Compared with the prior art, the electrode area of the driving electrode in the pixel opening area is reduced by extending the connecting portion of the driving electrode in a direction away from the pixel opening area and partially overlapping the black matrix. The formation of more gaps can promote the light irradiated on the display panel to be emitted through the pixel opening area to increase the transmittance of the light in the display panel.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is a schematic diagram of a pixel structure of a display panel in an embodiment of the present invention.

FIG. 2 is a schematic diagram of part of the first driving electrodes and part of the second driving electrodes in FIG. 1 .

FIG. 3 is a schematic diagram of a pixel structure of a display panel in another embodiment of the present invention.

4 to 14 are schematic cross-sectional views of different arrangements of the driving electrodes and the common electrodes of the display panel in the present invention.

detailed description

In order to have a clearer and more accurate understanding of the content of the present invention, it will now be described in detail with reference to the accompanying drawings, which show examples of embodiments of the present invention, wherein the same reference numerals represent the same elements. It can be understood that the proportions shown in the drawings of the description are not the proportions of the actual implementation of the present invention, which are for illustrative purposes only, and are not drawn according to the original scale.

FIG. 1 is a schematic diagram of a pixel structure of a display panel according to a first embodiment of the present invention.

As shown in FIG. 1 , the display panel includes a first substrate and a second substrate opposite to each other and a liquid crystal layer. The liquid crystal layer is sealed between the first substrate and the second substrate (not shown), and a plurality of pixel structures 100 are arranged on the first substrate. The first surface (not shown) of the substrate is described by taking the single pixel structure 100 as an example in this embodiment. Wherein, the display panel is, for example, an in-plane switching (In-Plane Switching, IPS) liquid crystal display panel, a fringe field switching (Fringe Field Switching, FFS) liquid crystal display panel or other liquid crystal display panel driven by a horizontal electric field.

FIG. 2 is a schematic diagram of part of the first driving electrodes and part of the second driving electrodes in FIG. 1 .

Please refer to FIG. 1 and FIG. 2 together. The pixel structure 100 includes a first driving electrode 110. The first driving electrode 110 includes a first connecting portion 111, a plurality of first branch electrodes and a plurality of first end electrodes. The first branch The first end of the electrode is electrically connected to the first connecting portion 111 , and the second end of the first branch electrode is electrically connected to the first end electrode. The black matrix is disposed on the second surface of the second substrate, and the second surface is opposite to and adjacent to the first surface. In the thickness direction of the first substrate, the black matrix has a vertical projection on the first surface, and the first connecting portion 111 partially overlaps with the vertical projection. In this embodiment, taking a pixel structure with a rectangular shape as an example, the plurality of first branch electrodes substantially extend obliquely downward at 45°. In this embodiment, by extending the connecting portion of the driving electrode in a direction away from the pixel opening area and partially overlapping the black matrix, the electrode area of the driving electrode in the pixel opening area is reduced, forming More gaps can further promote the light irradiated on the display panel to be emitted through the pixel opening area to increase the transmittance of the light in the display panel. At the same time, since the connecting portion extends away from the pixel opening area, the branch electrodes can be further extended in the pixel opening area, which is beneficial to obtain a more evenly distributed electric field when a voltage signal is input to the driving electrode. In addition, the arrangement of the terminal electrodes formed at the ends of the branch electrodes can effectively improve the strength of the horizontal electric field.

Referring to FIG. 2 , the first connecting portion 111 includes a first section 111A and a second section 111B electrically connected, the first section and the second section have a first angle α1, and the first angle α1 is greater than 90° . Each first branch electrode includes a first branch 112 and a second branch 113, the first branch 112 and the second branch 113 are separated from each other, and the first branch 112 and the second branch 113 are electrically conductive through the first connecting part 111. Pass. The first branch 112 is electrically connected to the first section 111A, and the second branch 113 is electrically connected to the second section 111B, wherein there is a second angle α2 between the first branch 112 and the first section 111A, and the second angle The angle α2 is less than 90°; there is a third angle α3 between the second branch 113 and the second section 111B, and the third angle α3 is greater than 90°.

Referring to FIG. 1 , each pixel structure 100 includes a gate line GL, a data line DL, and an active element TFT. The gate lines GL and the data lines DL are arranged to cross each other. Preferably, the gate lines GL and the data lines DL are arranged perpendicular to each other and define a pixel area corresponding to the pixel structure 100 . Wherein, the first connecting portion 111 overlaps above the data line DL and the gate line GL.

In this embodiment, as shown in FIG. 1 and FIG. 2 , the data line DL preferably extends along the D1 direction, and the gate line GL preferably extends along the D2 direction, and the D1 direction and the D2 direction are perpendicular to each other. Wherein, there is a fourth included angle θ1 between the first branch 112 and the D1 direction, and the fourth included angle θ1 is, for example, 45°, or the fourth included angle θ1 is parallel or perpendicular to the polarization direction of the upper and lower polarizers of the display panel , or the fourth angle θ1 is the polarization direction of the upper and lower polarizers of the display panel ±15°. There is a fifth included angle θ2 between the first section 111A and the D1 direction, and the fifth included angle θ2 is, for example, 30°, or, when the third end electrode 1221 is a rhombus, and one of the diagonals of the rhombus overlaps with the D1 direction , the fifth included angle θ2 is equal to the supplementary angle θ4 of the rhombus structure. There is a sixth included angle θ3 between the second section 111B and the direction D1, and the sixth included angle is equal to the fifth included angle θ2.

In addition, in this embodiment, based on the consideration of conductivity, the gate lines GL and the data lines DL are generally made of metal materials. However, the present invention is not limited thereto. According to other embodiments, the gate lines GL and the data lines DL may also use other conductive materials. For example: alloys, nitrides of metal materials, oxides of metal materials, oxynitrides of metal materials, or other suitable materials, or stacked layers of metal materials and other conductive materials.

The active element TFT can be a bottom gate thin film transistor or a top gate thin film transistor, which includes a gate, a channel, a source and a drain. The active element TFT is electrically connected to the corresponding gate line GL and the corresponding data line DL. Here, the active element TFT can be used as a switch element whether to write voltage information into the first driving electrode 110 . For example, when the active element TFT is turned on to write voltage information into the first driving electrode 110, the first driving electrode 110 has a first potential, and its value is different from that of the second driving electrode 120 electrically connected to the common electrode line CL. The second potential, the potential difference between the first driving electrode 110 and the second driving electrode 120 causes a transverse electric field to be generated between the two electrodes, thereby driving the liquid crystal layer, but not limited thereto. The liquid crystal layer has optical isotropy and optical anisotropy according to voltage driving. For example, the liquid crystal layer can be blue phase liquid crystal. In order for the blue phase liquid crystal to have a wider blue phase temperature, polymers can also be used to stabilize the blue phase liquid crystal. Blue-phase liquid crystals are well known to those skilled in the art, so details will not be repeated here.

Continuing to refer to FIG. 1, the first end electrode is electrically connected to the second end of the first branch electrode. Specifically, the first end electrode includes a first end electrode 1121 and a second end electrode 1131. The first end electrode 1121 and the second terminal electrode 1131 respectively have a rhombus structure, corresponding to the first branch 112, the first terminal electrode 1121 is connected to the end of the first branch 112; corresponding to the second branch 113, the second terminal electrode 1131 is connected to the end of the second branch 113 .

In this embodiment, the pixel structure 100 further includes a second driving electrode 120, and the second driving electrode 120 is separated from the first driving electrode 110. Preferably, centering on the dotted line f1 in FIG. The first driving electrodes are arranged symmetrically, wherein the shape of the second driving electrodes 120 may be similar to that of the first driving electrodes 110 , but not limited thereto.

The second driving electrode 120 includes a second connection part 121, a plurality of second branch electrodes and a plurality of second end electrodes, wherein the second connection part 121, the second branch electrodes and the second end electrodes are electrically connected in sequence , and the electrical connection method is the same as that of the first driving electrode 110 . The third end of the second branch electrode is electrically connected to the second connection portion 121 , the fourth end of the second branch electrode is electrically connected to the second end electrode, and the third end is opposite to the fourth end. The second connection portion 121 partially overlaps the data line DL and the gate line GL, and the second connection portion 121 partially overlaps the vertical projection of the black matrix on the first surface.

Each second branch electrode includes a third branch 122 and a fourth branch 123, the third branch 122 and the fourth branch 123 are separated from each other, and the third branch 122 and the fourth branch 123 are electrically connected to each other through the second connection part 121 . Wherein, the second connecting portion 121 has a third section and a fourth section (not shown) electrically connected, and the angle between the third section and the fourth section is greater than 90°; The third branch 122 is electrically connected, and the angle between the third section and the third branch 122 is greater than 90°; the fourth section is electrically connected to the fourth branch 123, and the fourth section is connected to the fourth branch 123 The angle between them is less than 90°.

The second end electrode is electrically connected to the fourth end of the second branch electrode. Specifically, the second end electrode includes a third end electrode 1221 and a fourth end electrode 1231, and the third end electrode 1221 and the fourth end electrode 1231 are diamond structures, corresponding to the third branch 112 , the third end electrode 1221 is connected to the end of the third branch 122 ; corresponding to the fourth branch 123 , the second end electrode 1231 is connected to the end of the fourth branch 113 .

In this embodiment, taking a pixel structure with a rectangular shape as an example, the plurality of second branch electrodes substantially extend obliquely upward at 45°.

Referring to FIG. 1 , there is a first gap 114 between the first branch 112 and the second branch 113 . There is a second gap 214 between the third branch 122 and the fourth branch 123 , the third branch 122 is located in the first gap 114 , and the second branch 113 is located in the second gap 214 . Wherein, the first branch electrodes 112 and the second branch electrodes 122 extend sequentially in the pixel structure 100 in this way.

The first connecting portion 111 of the first driving electrode 110 has a first outer edge 115, the first outer edge 115 is an edge away from the first branch electrode 112, and the second connecting portion 121 of the second driving electrode 120 has a second outer edge 215 , the second outer edge is an edge away from the second branch electrodes 122 . In the pixel structure 100 shown in FIG. 1 , the first outer edge 115 and the second outer edge 125 are respectively non-linear, but not limited thereto.

FIG. 3 is a schematic diagram of a pixel structure of a display panel in another embodiment of the present invention. Wherein, elements with the same numbers in FIG. 3 and FIG. 1 have the same or similar functions.

As shown in FIG. 3 , the pixel structure 300 includes a pair of first driving electrodes 210 and second driving electrodes 220 separated from each other, and the first driving electrodes 210 and the second driving electrodes 220 have similar structures.

The difference between the pixel structure 200 and the pixel structure 100 is that the first outer edge 215 of the first connecting portion 211 of the first driving electrode 210 and the second outer edge 225 of the second connecting portion 221 of the second driving electrode 220 are respectively linear. . Limited by the current manufacturing level, when the outer edge of the connecting portion of the driving electrode is in a straight shape, it is more conducive to the actual production of the product.

Since the first connecting portion 211 of the first driving electrode 210 and the second connecting portion 221 of the second driving electrode 220 in the pixel structure 200 respectively extend in a direction away from the pixel opening area, and are respectively perpendicular to the black matrix on the first substrate. The overlapping projections leave more space in the pixel opening area for arranging the branch electrodes and the terminal electrodes. Wherein, the first branch electrode includes, for example, a first branch 212 , the end of the first branch 212 is electrically connected to the first end electrode 2121 , and preferably the first end electrode 2121 partially overlaps the data line DL. Similarly, the second branch electrode includes, for example, a second branch 222 , the end of the second branch 222 is electrically connected to the second end electrode 2221 , preferably the second end electrode 2221 is partially overlapped above the gate line GL. The aforementioned branch electrodes and end electrodes further extend in the pixel opening area, and when voltage is input to the first driving electrode 210 and the second driving element 220 , a more uniform planar electric field can be obtained.

4 to 14 are schematic cross-sectional views of different arrangements of the driving electrodes and the common electrodes of the display panel in the present invention.

The above-mentioned pixel structure of the present invention is applied to a liquid crystal display panel. In order to obtain a high light transmittance, the driving electrodes and the common electrodes can also be reasonably arranged. Please refer to Figure 4 to Figure 14.

As shown in FIG. 4 , the liquid crystal display panel 301 includes a first substrate 10 and a second substrate 20 oppositely arranged, and a liquid crystal layer (not shown) sealed between the first substrate 10 and the second substrate 20, wherein the first The first electrode 30 , the second electrode 40 and the first common electrode 50 are respectively disposed on the surface of the second substrate 20 close to the liquid crystal layer. Since the voltages of the first electrode 30 and the first common electrode 50 are different from each other, a first plane electric field parallel to the second substrate 20 can be formed between the first electrode 30 and the first common electrode 50 . Meanwhile, since the voltages between the second electrode 40 and the first common electrode 50 are also different from each other, a second plane electric field parallel to the second substrate 20 can be formed between the second electrode 40 and the first common electrode 50 . Under the action of the first plane electric field and the second plane electric field, the liquid crystal molecules in the liquid crystal layer are driven to perform plane rotation. Wherein, the first electrode 30 and the second electrode 40 have the same structure.

As shown in FIG. 5, the only difference between the liquid crystal display panel 302 and the liquid crystal display panel 301 is that the liquid crystal display panel 302 has an insulating layer 60, and the insulating layer 60 is arranged on the second substrate 20, and is respectively located on the first electrode 30, the second Below the second electrode 40 and the first common electrode 50 . The insulating layer 60 has two opposite sidewalls. In this embodiment, the two sidewalls are respectively perpendicular to the surface of the second substrate 20, that is, the angle θ4 formed between the two sidewalls and the surface of the second substrate 20 is 90°. , the two side walls are linear structures, but not limited thereto. Preferably, the height of the insulating layer 60 is between 0.01 μm and 10 μm. In other embodiments of the present invention, the angle formed between the two side walls and the surface of the second substrate 20 is 15° to 90°, and the two side walls may be concave or convex arc structures, or two The sidewall is a non-linear structure with one or more bent parts.

As shown in FIG. 6, the only difference between the liquid crystal display panel 303 and the liquid crystal display panel 302 is that the first electrode includes a first lower electrode 31 and a first upper electrode 32 opposite to each other, and an insulating layer 60 is located between the first lower electrode 31 and the first upper electrode 32. Between the first upper electrodes 32, the widths of the first lower electrodes 31 and the first upper electrodes 32 are equal to each other; the second electrodes include opposite second lower electrodes 41 and second upper electrodes 42, and the insulating layer 60 is located on the second lower electrodes 41 Between the second upper electrode 42, the widths of the second lower electrode 41 and the second upper electrode 42 are equal to each other; the first common electrode includes the first lower common electrode 51 and the first upper common electrode 51, and the insulating layer 60 is located on the first Between the lower common electrode 51 and the first upper common electrode 51 .

As shown in FIG. 7, the only difference between the liquid crystal display panel 304 and the liquid crystal display panel 303 is that it also includes a second common electrode 53, and the second common electrode 53 is arranged on the surface of the first substrate 53 facing the first substrate 51, and The projection of the second common electrode 53 on the second substrate 20 completely overlaps with the first common electrode.

As shown in FIG. 8, the only difference between the liquid crystal display panel 305 and the liquid crystal display panel 303 is that it also includes a third common electrode 54 and a fourth common electrode 55, and the third common electrode 54 and the fourth common electrode 55 are arranged on the first substrate. 53 on the surface facing the first substrate 51, and the projection of the third common electrode 54 on the second substrate 20 completely overlaps with the first electrode, and the projection of the fourth common electrode 55 on the second substrate 20 completely overlaps with the second electrode. overlapping.

As shown in Figure 9, the only difference between the liquid crystal display panel 306 and the liquid crystal display panel 303 is that it also includes the second common electrode 53, the third common electrode 54 and the fourth common electrode 55, wherein the second common electrode 53, the third The common electrode 54 and the fourth common electrode 55 are respectively arranged on the surface of the first substrate 53 facing the first substrate 51, and the projection of the second common electrode 53 on the second substrate 20 completely overlaps with the first common electrode, and the third The projection of the common electrode 54 on the second substrate 20 completely overlaps the first electrode, and the projection of the fourth common electrode 55 on the second substrate 20 completely overlaps the second electrode.

As shown in FIG. 10 , the difference between the liquid crystal display panel 307 and the liquid crystal display panel 304 is that the structures of the first electrode and the second electrode are different, specifically, the width of the first upper electrode 32 is equal to the width of the first lower electrode 31, However, the first lower electrode 31 is skewed compared to the first upper electrode 32, and the skew direction in FIG. 10 is opposite to the skew direction in FIG. 11, so that the projection of the first upper electrode 32 on the second substrate It only partially overlaps with the first lower electrode 31 . In actual operation, the width of the first upper electrode 32 can also be different from the width of the first lower electrode 31, but it must be satisfied that the projection of the first upper electrode 32 on the second substrate 20 only partially overlaps with the first lower electrode 31 . In this embodiment, as shown in FIG. 10 and FIG. 11 , the insulating layer 60 does not completely cover the first lower electrode 31 . The design of the second electrode is similar to that of the first electrode, and will not be repeated here.

As shown in Figure 12, in the liquid crystal display panel 309, the first lower electrode 31 of the first electrode and the insulating layer 60 are located on the second substrate 20, the first upper electrode 32 is located on the insulating layer 60, and the first lower electrode 31 touches the second substrate 20. connected to the first sidewall 61 of the insulating layer 60. As shown in FIG. 12 , the second electrode is, for example, a first common electrode 51, the first common electrode 51 includes a second lower common electrode 51 and a second upper common electrode 52, and the second lower common electrode 51 is disposed on the second substrate 20 , and the second lower common electrode 51 abuts against the second sidewall 62 of the insulating layer 60 , and the second sidewall 62 is opposite to the first sidewall 61 . The second upper common electrode 52 is disposed on the insulating layer 600 , and the second upper common electrode 52 is insulated from the first upper electrode 32 . In other words, the first electrode and the second electrode in this embodiment share an insulating layer. When making the first electrode and the second electrode, the insulating layer 60 can be formed on the substrate 20 first, and then the first lower electrode 31 and the second lower common electrode 51 can be formed on the second substrate 20 at one time using a photomask. The first upper electrode 30 and the second upper common electrode 52 are formed on the layer 60 . Wherein, the first lower electrode 31, the second lower common electrode 51, the first upper electrode 32, and the second upper common electrode 52 can be set as electrodes with the same width according to actual needs, and the width of each electrode can also be set according to actual needs. . In this embodiment, the second common electrode 53 is disposed on the first substrate 10 and faces the second substrate 20 . The width of the second common electrode 53 is equal to the sum of the widths of the first upper electrode 32 and the first lower electrode 31 . In actual operation, the width of the second common electrode 53 may be only the width of the first upper electrode 32 , or the width of the second common electrode 53 may be determined according to actual needs.

Please refer to FIG. 13 and FIG. 14 . FIG. 13 and FIG. 14 are cross-sectional views of another embodiment of the liquid crystal display panel of the present invention.

As shown in FIG. 13 , the liquid crystal display panel 310 includes two identical first electrodes, the first electrodes include a first lower electrode 31 and a first upper electrode 32; two first common electrodes, the first of the first common electrodes The lower common electrode 51 is skewed relative to the first upper common electrode, and the first lower common electrode 51' of the other common electrode is also skewed relative to the first upper common electrode 52', and the direction of the skew is opposite; the second electrode includes The second lower electrode 41 and the second upper electrode 42 . Wherein, the width of the first lower electrode 31 is equal to that of the first upper electrode 32 , and the width of the second lower electrode 41 is greater than that of the second upper electrode 42 . A plurality of second common electrodes 53 are formed on the first substrate 10, and projections of the plurality of second common electrodes 53 on the second substrate 20 overlap with the two first upper common electrodes 52, 52' respectively.

As shown in FIG. 14, the only difference between the liquid crystal display panel 311 and the liquid crystal display panel 310 is that among the two common electrodes, the width of the first lower common electrodes 51, 51' is larger than that of the first upper common electrodes 52, 52' respectively.

In FIGS. 4 to 14, pixel electrodes and common electrodes with different structures or arrangements are arranged on the substrate of the liquid crystal panel, so that the pixel electrode and the common electrode, and the pixel electrode and the pixel electrode can form a level parallel to the liquid crystal display panel. The electric field increases the horizontal electric field per unit area, thereby improving the transmittance of the liquid crystal display panel.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. A display panel, comprising a relative first substrate and a second substrate and a liquid crystal layer, the liquid crystal layer being arranged between the first substrate and the second substrate, characterized in that: the display panel also includes: A plurality of pixel structures, which are arranged on the first surface of the first substrate, the pixel structures include a first driving electrode, and the first driving electrode includes a first connection part, a plurality of first branch electrodes and a plurality of first ends An electrode, the first end of each first branch electrode is electrically connected to the first connection part, the second end of each first branch electrode is electrically connected to the first end electrode, and the first end is connected to the second electrode. opposite ends; and a black matrix, which is arranged on the second surface of the second substrate, the second surface is opposite to the first surface, and in the thickness direction of the first substrate, the black matrix has a vertical projection on the first surface, The first connecting portion partially overlaps with the vertical projection. 2. The display panel according to claim 1, wherein the first connecting portion comprises a first section and a second section electrically connected, and the first section and the second section have a first included angle, the first included angle is greater than 90°; the first branch electrode includes a first branch and a second branch separated from each other, the first branch is electrically connected to the first segment, and the first branch and the second branch A section has a second included angle, the second included angle is less than 90°, the second branch is electrically connected to the second section, and the second branch and the second section have a third included angle, the first The three included angles are greater than 90°. 3. The display panel according to claim 2, wherein the pixel structure further comprises a data line extending along a first direction, the first branch has a fourth angle with the first direction, and the first branch There is a fifth included angle between a section and the first direction, a sixth included angle between the second section and the first direction, and the fifth included angle is equal to the sixth included angle. 4. The display panel as claimed in claim 3, wherein the fourth included angle is 45°. 5. The display panel as claimed in claim 3, wherein the fifth included angle is 30°. 6. The display panel according to claim 2, wherein the pixel structure further comprises a second driving electrode separated from the first driving electrode, and the second driving electrode comprises a second connecting portion, a plurality of second branches An electrode and a plurality of second end electrodes, the third end of each second branch electrode is electrically connected to the second connection part, and the fourth end of each second branch electrode is electrically connected to the second end electrode , the third end is opposite to the fourth end, and the second connecting portion partially overlaps with the vertical projection. 7. The display panel as claimed in claim 6, wherein the liquid crystal layer comprises polymer stabilized blue phase liquid crystal molecules, and the first driving electrode and the second driving electrode are used to form a horizontal electric field to drive the polymer to stabilize The blue phase liquid crystal molecules rotate to display. 8. The display panel according to claim 1 or 6, wherein the pixel structure further comprises a gate line, the gate line and the data line are perpendicular to each other, the first connecting portion and the second connecting portion are respectively partially overlap the data line and the gate line. 9. The display panel according to claim 1 or 6, wherein the first end electrode and the second end electrode are diamond-shaped respectively. 10. The display panel according to claim 1, wherein the first connecting portion has a first outer edge, the second connecting portion has a second outer edge, and the first outer edge and the second outer edge are non-linear.