Display substrate and display panel

Abstract

The utility model relates to a display substrate and a display panel. The display substrate comprises gate lines, data lines and a plurality of pixel units defined by insulated crossing of the gate lines and the data lines. The size of each pixel unit in the first direction is larger than the size of the pixel unit in the second direction. Each pixel unit comprises a plurality of strip-shaped electrodes arranged in parallel, and the strip-shaped electrodes extend in the third direction. The included angle between the third direction and the gate line ranges from 70 degrees to 85 degrees. The display substrate is optimized on the basis of multi-grid design, that is, by setting the position relation between the strip-shaped electrodes and the grid lines and the position relation between the strip-shaped electrodes and the data lines, on the basis that the transmittance of the display substrate is guaranteed, the contrast ratio of the display substrate under the high view angle can be further improved, the display effect is improved, and the diversified requirements of customers are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, in particular to a display substrate and a display panel. BACKGROUND

[0002] With the continuous progress of display technology and the continuous improvement of customer requirements for display quality, the viewing angle requirement of display products is also continuously improving, especially in vehicle-mounted, public display and other products. At present, in order to reduce the number of vehicle-mounted display substrate source IC (source driving chip) and save cost, the pixel Triple gate (three gate) design gradually becomes the mainstream trend, but the Triple gate (three gate) design is a horizontal pixel design. This design will result in low viewing angle contrast of the display substrate, which is difficult to meet the diversified needs of customers. SUMMARY

[0003] To solve the above problems, the present application provides a display substrate, which comprises gate lines extending along a first direction and arranged along a second direction, data lines extending along the second direction and arranged along the first direction, and a plurality of pixel units defined by the gate lines and the data lines insulatingly crossing each other, each of the pixel units comprising a first electrode layer, the first electrode layer comprising a plurality of first strip-shaped electrodes arranged in parallel, and the first strip-shaped electrodes extending along a third direction, an included angle between the third direction and the gate lines being a first included angle, and the first included angle being in a range of 70° to 85°.

[0004] The size of each of the pixel units in the first direction is greater than the size of the pixel unit in the second direction.

[0005] In one of the embodiments, the pixel unit further comprises at least one electrode line for connecting a plurality of the first strip-shaped electrodes, and the material of the electrode line is the same as that of the strip-shaped electrodes.

[0006] In one of the embodiments, each of the pixel units comprises a plurality of first strip-shaped electrodes arranged at intervals along the first direction and one electrode line, one end of the plurality of strip-shaped electrodes is connected to the electrode line, and the other end forms a plurality of first openings between two adjacent strip-shaped electrodes.

[0007] In one of the embodiments, the pixel unit is provided with a first electrode line and a second electrode line, wherein

[0008] The first electrode line and the second electrode line are respectively located at two ends of the first strip-shaped electrodes, and the first electrode line is used to connect part of the first strip-shaped electrodes, and the second electrode line is used to connect part of the first strip-shaped electrodes.

[0009] In one of the embodiments, the first strip-shaped electrode connected with the first electrode line is a first sub-strip-shaped electrode, and the strip-shaped electrode connected with the second electrode line is a second sub-strip-shaped electrode; wherein,

[0010] One end of the first sub-strip-shaped electrode is connected with the first electrode line, and the other end of the first sub-strip-shaped electrode forms the first opening;

[0011] One end of the second sub-strip-shaped electrode is connected with the second electrode line, and the other end of the second sub-strip-shaped electrode forms the first opening.

[0012] In one of the embodiments, at least one of the first sub-strip-shaped electrodes has one end connected with the first electrode line and the other end connected with the second electrode line.

[0013] In one of the embodiments, the first electrode layer further comprises two second strip-shaped electrodes arranged in parallel, and the second strip-shaped electrodes extend along the second direction;

[0014] The second strip-shaped electrodes are respectively located on two sides of the first strip-shaped electrodes, and the electrode lines of the second strip-shaped electrodes are connected, and the included angle between the second strip-shaped electrodes and the first strip-shaped electrodes is a second included angle; wherein,

[0015] The second included angle is smaller than the first included angle.

[0016] In one of the embodiments, one end of the first strip-shaped electrode having the first opening has a projection on the first electrode layer, and the projection overlaps the projection of the gate line on the first electrode layer; and / or

[0017] The projection of the electrode line on the first electrode layer overlaps the projection of the gate line on the first electrode layer.

[0018] In one of the embodiments, the connection part of the first strip-shaped electrode and the electrode line has a first projection on the first electrode layer, the projection of the gate line on the first electrode layer is a second projection, and the first projection overlaps the second projection.

[0019] In one of the embodiments, the display substrate further comprises a plurality of pixel modules, the pixel modules are arranged in an array, each of the pixel modules comprises four pixel units, and the pixel units are arranged in a manner of two rows and two columns, wherein the row direction is the same as the first direction, and the column direction is the same as the second direction.

[0020] In one of the embodiments, in the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are translationally symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are translationally symmetrical about the gate line; or

[0021] In the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are translationally symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are mirror-symmetrical about the gate line; or

[0022] In the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are mirror-symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are translationally symmetrical about the gate line; or

[0023] In the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are mirror-symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are mirror-symmetrical about the gate line.

[0024] In one of the embodiments, the pixel unit further comprises a second electrode layer, which is configured as a plate-shaped electrode.

[0025] In each of the pixel units, the first electrode layer is a pixel electrode, and the second electrode layer is a common electrode; or

[0026] The first electrode layer is a common electrode, and the second electrode layer is a pixel electrode.

[0027] The application further provides a display panel comprising the display substrate as mentioned in any one of the above embodiments.

[0028] The technical scheme provided by the embodiments of the application can have the following beneficial effects:

[0029] As can be seen from the above embodiments, the display substrate of the application comprises a gate line, a data line, and a plurality of pixel units defined by the insulating intersection of the gate line and the data line. The size of each pixel unit in the first direction is greater than the size of the pixel unit in the second direction. Each pixel unit comprises a plurality of parallel strip-shaped electrodes extending along a third direction. The angle between the third direction and the gate line is in the range of 70° to 85°. The application optimizes the display substrate based on the multi-gate design, that is, by setting the positional relationship between the strip-shaped electrodes and the gate line and the data line, the contrast ratio of the display substrate under high viewing angle can be further improved on the basis of ensuring the transmittance of the display substrate, the display effect is improved, and the diversified needs of customers are met.

[0030] It should be understood that the above general description and the following detailed description are only exemplary and explanatory and are not restrictive of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0032] Figure 1 Table of requirements for contrast in a specific viewing angle provided in an embodiment of the present application.

[0033] Figure 2 Schematic diagram of a conventional display substrate design provided in an embodiment of the present application.

[0034] Figures 3-6 Schematic diagram of structures of different pixel units in a viewing angle provided in an embodiment of the present application.

[0035] Figures 7-8 Schematic diagram of structures of pixel electrodes in a viewing angle provided in an embodiment of the present application.

[0036] Figures 9-10 Pixel light effect diagram of pixel units in a viewing angle provided in an embodiment of the present application.

[0037] Figures 11-14 Schematic diagram of structures of different pixel units in a viewing angle provided in an embodiment of the present application.

[0038] Figure 15 Pixel light effect diagram of pixel units in a viewing angle provided in an embodiment of the present application.

[0039] Reference signs:

[0040] 1, gate line; 2, data line; 310, first strip-shaped electrode; 320, second strip-shaped electrode; 32, common electrode; 300, pixel module; 301, first pixel unit; 302, second pixel unit; 303, third pixel unit; 304, fourth pixel unit; 4, electrode line; 41, first electrode line; 42, second electrode line; 5, first opening.

[0041] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0042] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made in connection with the drawings, in which the same reference numerals designate the same elements throughout the several figures, and the description is made in connection with the drawings and is directed to illustrative exemplary embodiments. The exemplary embodiments described below are not meant to represent all ways in which the present application can be made in conformance with the present application. Rather, they are merely examples of devices in conformance with some aspects of the present application as detailed in the appended claims.

[0043] In the display industry, the standard of viewing angle test usually requires the ratio between the full white (L255, 255 gray scale) brightness and the full black (L0, 0 gray scale) brightness to be greater than 10, which is called the contrast ratio (CR). When the CR value is greater than 10, the angle is considered to be the viewing angle. Generally, a user can take 120 degrees of viewing angle as the selection standard. Since the light source of an LCD display has a certain directivity when outputting after refraction and reflection, color distortion phenomenon will occur when viewed beyond this direction range. Therefore, the size of the viewing angle directly determines the user's viewing range and the preferred viewing angle.

[0044] With the continuous progress of display technology and the continuous improvement of customers' requirements for display quality, the viewing angle requirement of display products is also continuously improving. This trend is particularly evident in the fields of vehicle-mounted and public display, etc. For example, referring to Figure 1 , the latest vehicle-mounted German standard has specified that the CR value at a specific viewing angle (A zone, display area) should be greater than 650.

[0045] In order to enhance market competitiveness, the pixel design of current vehicle-mounted display products generally adopts triple gate (multi-gate design). The advantage of this design is that it can effectively reduce the number of source ICs (source driving chips) used, thereby reducing costs. As shown in Figure 2 , Figure 2 , the designs of 12.3-inch GOA single gate (3 ICs) and triple gate (1 IC) are compared. However, the current triple gate design is a horizontal pixel layout, which will result in a low contrast ratio (CR) at a viewing angle, which cannot meet the high requirements of vehicle-mounted customers for display quality, thereby limiting its promotion in vehicle-mounted applications.

[0046] Based on this, the present application provides a display substrate. As shown in Figure 3 , it includes gate lines 1 extending along a first direction X and arranged along a second direction Y, data lines 2 extending along the second direction Y and arranged along the first direction X, and a plurality of pixel units defined by the insulating intersection of the gate lines 1 and the data lines 2.

[0047] Each pixel unit comprises a first electrode layer, the first electrode layer comprises a plurality of first strip electrodes 310 arranged in parallel, and the first strip electrodes 310 extend along a third direction Z, and an included angle between the third direction Z and the gate line 1 is a first included angle, and the first included angle ranges from 70° to 85°. Specifically, each pixel unit further comprises a second electrode layer, and the first electrode layer and the second electrode layer can be any one of a pixel electrode layer and a common electrode 32 layer. In this embodiment, the first electrode layer is taken as the pixel electrode layer, and the second electrode layer is taken as the common electrode 32 layer for illustration. Correspondingly, the first strip electrode 310 is the pixel electrode, and further, the second electrode layer is configured as a plate-shaped electrode, that is, the common electrode 32 is configured as a plate-shaped structure.

[0048] Further, in a liquid crystal display (LCD), a pixel electrode is usually designed with a slit structure, and the main function of the slit is to control the arrangement of liquid crystal molecules. The slit angle, that is, the included angle between the slit and the gate line 1. Specifically, the first included angle can also be defined as the angle between the slit on the first electrode layer and the gate line 1. In a certain sense, the first included angle or the slit angle is used to express the inclination degree of the pixel electrode itself.

[0049] The present application optimizes the structural design of the pixel unit, that is, adjusts the included angle range between the pixel electrode 31 and the gate line 1, so that the pixel unit presents a vertical display substrate. This design not only ensures that the product has good transmittance, but also effectively improves the contrast of the product, thereby ensuring the display effect while improving the display quality.

[0050] The range of the first included angle (slit angle) in the present application is preferably between 70° and 85°. This angle range can effectively improve the arrangement efficiency of liquid crystal molecules, thereby improving the display quality and performance, can effectively optimize the arrangement of liquid crystal molecules, improve the contrast and transmittance of the product, reduce the color deviation phenomenon, and thereby improve the display quality. This design has important application value in the fields of vehicle display and public display.

[0051] Specifically, in vehicle display, high contrast and wide viewing angle are important performance indicators. By optimizing the slit angle, the display quality can be improved to meet the high requirements of vehicle customers on display performance. In the field of public display, such as billboards, information display screens, etc., high contrast and wide viewing angle are also important. Optimizing the slit angle can improve the display effect and enhance the visual experience.

[0052] In some embodiments, with reference to Figure 3The pixel unit further comprises at least one electrode line 4 for connecting the first strip electrodes 310, so as to control the liquid crystal molecules. Preferably, the electrode line 4 can be part of the common electrode 32, and participates in forming the electric field to control the molecular arrangement. Preferably, the material of the electrode line 4 is the same as that of the strip electrode 31. Preferably, the first strip electrodes 310 and the electrode line 4 are both made of ITO (Indium Tin Oxide). ITO is a transparent conductive material, which has good conductivity and high light transmittance.

[0053] The electrode line 4 can connect the first strip electrodes 310 to form a complete circuit, and at the same time serve as a signal transmission channel to transmit control signals to the first strip electrodes 310. This optimizes the electric field distribution, improves the display quality, increases the storage capacity, and significantly improves the performance and display effect of the liquid crystal display.

[0054] In some embodiments, referring to Figure 7 and Figure 8 , each pixel unit comprises a plurality of first strip electrodes 310 arranged at intervals along the first direction X and an electrode line 4. One end of the plurality of first strip electrodes 310 is connected to the electrode line 4. The other end forms a plurality of first openings 5 between adjacent two first strip electrodes 310.

[0055] Further, referring to Figures 3-10 , the pixel unit is provided with only one continuous electrode line 4 for connecting the same end of all the first strip electrodes 310. In an abstract sense, the first strip electrodes 310 and the electrode line 4 in the pixel unit as a whole form a "comb".

[0056] In some embodiments, referring to Figures 11-14 , the pixel unit is provided with a first electrode line 41 and a second electrode line 42. The first electrode line 41 and the second electrode line 42 are respectively located at the two ends of the first strip electrodes 310, and the first electrode line 41 is used to connect part of the first strip electrodes 310, and the second electrode line is used to connect part of the first strip electrodes 310.

[0057] Further, continuing to refer to Figure 14 , the first strip electrodes 310 connected by the first electrode line 41 are first sub-strip electrodes 3100, and the first strip electrodes 310 connected by the second electrode line 42 are second sub-strip electrodes 3101. One end of the first sub-strip electrodes 3100 is connected to the first electrode line 41, and the other end of the first sub-strip electrodes 3100 forms the first opening 5. One end of the second sub-strip electrodes 3101 is connected to the second electrode line 42, and the other end of the second sub-strip electrodes 3101 forms the first opening 5.

[0058] In one embodiment, one end of the first sub-strip-shaped electrode 3100 is connected to the first electrode line 41, and the other end is connected to the second electrode line 42. Among them, the first electrode line 41 and the second electrode line 42 are collectively connected to both ends of at least one first strip-shaped electrode 31, which can be abstractly understood as the first strip-shaped electrode 31 and the electrode line 4 in the pixel unit as a whole in the form of a traditional Chinese character "horse", that is, a "horse" character.

[0059] The present application does not limit the number of first strip-shaped electrodes 31 connected by the first electrode line 41 and the second electrode line 42 respectively. Preferably, the number of first sub-strip-shaped electrodes 3100 connected by the first electrode line 41 is the same as the number of second sub-electrodes 3101 connected by the second electrode line 42, and further, the present application does not limit the number of first strip-shaped electrodes 31 collectively connected by the first electrode line 41 and the second electrode line 42. For example, referring to Figure 14 , one end of two first sub-strip-shaped electrodes 3100 is connected to the first electrode line 41, and the other end is connected to the second electrode line 42.

[0060] In some embodiments, referring to Figure 7 , Figure 8 , Figure 12 and Figure 14 , the first electrode layer further includes two second strip-shaped electrodes 320 arranged in parallel, and the second strip-shaped electrodes 320 extend along the second direction Y.

[0061] Specifically, the second strip-shaped electrodes 320 are respectively located on both sides of the first strip-shaped electrodes 310, and the second strip-shaped electrodes 320 are connected to the electrode line 4, and the included angle between the second strip-shaped electrodes 320 and the first strip-shaped electrodes 310 is a second included angle. Among them, the second included angle is smaller than the first included angle.

[0062] In some embodiments, referring to Figures 3 to 6 , one end of the first strip-shaped electrode 310 has a normal projection on the first electrode layer that overlaps with the normal projection of the gate line 1 on the first electrode layer.

[0063] Such a design can bring the following effects: first, through the overlap to form a capacitive coupling, which helps to stabilize the voltage of the pixel electrode, reduces voltage fluctuation, and thus improves display quality. Second, the overlapping design can shield external electromagnetic interference to some extent, protect the stability of signal transmission, and reduce signal distortion. In addition, this design also helps to optimize the layout of the pixel structure, so that the entire display panel is more compact, which helps to improve the aperture ratio, and thus improves the brightness and energy efficiency of the display panel.

[0064] In some embodiments, the first electrode layer is provided with a plurality of electrode lines 4, and the electrode lines 4 are parallel to the gate lines 1. In some embodiments, the electrode lines 4 are parallel to the data lines 2. In some embodiments, the electrode lines 4 are parallel to the gate lines 1 and the data lines 2. In some embodiments, the electrode lines 4 are parallel to the gate lines 1 and the data lines 2, and the electrode lines 4 and the gate lines 1 are perpendicular to the data lines 2. In some embodiments, the electrode lines 4 are parallel to the gate lines 1 and the data lines 2, and the electrode lines 4 and the data lines 2 are perpendicular to the gate lines 1.

[0065] In some embodiments, the first electrode layer is provided with a plurality of electrode lines 4, and the electrode lines 4 are parallel to the gate lines 1. In some embodiments, the electrode lines 4 are parallel to the data lines 2. In some embodiments, the electrode lines 4 are parallel to the gate lines 1 and the data lines 2. In some embodiments, the electrode lines 4 are parallel to the gate lines 1 and the data lines 2, and the electrode lines 4 and the gate lines 1 are perpendicular to the data lines 2. In some embodiments, the electrode lines 4 are parallel to the gate lines 1 and the data lines 2, and the electrode lines 4 and the data lines 2 are perpendicular to the gate lines 1.

[0066] Further, the area of the second projection is greater than the area of the first projection. It can also be understood that the projection of the connection part of the first strip-shaped electrode and the electrode line 4 on the first electrode layer is entirely within the projection of the gate line 1 on the first electrode layer.

[0067] The display substrate further has an axis of symmetry, and the first strip-shaped electrodes 310 in any two adjacent pixel units are translationally symmetric or mirror symmetric about the axis of symmetry. The axis of symmetry coincides with the gate line 1 or the data line 2. It can also be understood that the gate line 1 is used as the axis of symmetry, or the data line 2 is used as the axis of symmetry.

[0068] Specifically, the first strip-shaped electrodes 310 in the adjacent two pixel units are translationally symmetric about the axis of symmetry, which can be understood as that the inclination direction and the inclination angle (first included angle) of the adjacent two first strip-shaped electrodes 310 are the same. The first strip-shaped electrodes 310 in the adjacent two pixel units are mirror symmetric about the axis of symmetry, which can be understood as that the inclination angles of the adjacent two first strip-shaped electrodes 310 are different, but the inclination directions are mirror opposite.

[0069] This arrangement can obtain various arrangement modes between the pixel electrodes 31. In the product power-on state, the electric field generated in each pixel unit is different, so that the liquid crystal deflection angle of each pixel unit is different when the liquid crystal display panel is working, multi-domain display can be realized, the brightness difference of the liquid crystal display panel using the display substrate is further reduced, the color difference problem is effectively improved, and the display effect is further improved.

[0070] It should be particularly noted that multi-domain display is a liquid crystal display (LCD) technology that improves display performance by forming multiple liquid crystal orientation regions (domains) in a pixel area.

[0071] Taking four-domain display as an example, four pixel units form a pixel module 300. The structure of the first strip-shaped electrode 310 and the electrode line in each pixel unit is in the shape of a "comb". The pixel units are arranged in the manner of two rows and two columns, wherein the row direction is the same as the first direction X, and the column direction is the same as the second direction Y. In order to realize that the electric field generated by each pixel unit in the pixel module 300 is different in the energized state, and then the deflection angle of the liquid crystal of each pixel unit is different, so as to realize four-domain display, the embodiments include but are not limited to the following:

[0072] For the convenience of reading, the first strip-shaped electrodes 310 in the four pixel units in the pixel module 300 are respectively named as the first pixel electrode 301, the second pixel electrode 302, the third pixel electrode 303 and the fourth pixel electrode 304. Referring to Figure 3 , the first pixel electrode 301 and the second pixel electrode 302 are arranged in the same row, and the first pixel electrode 301 and the third pixel electrode 303 are arranged in the same column.

[0073] Embodiment one: the first pixel electrode 301 in the adjacent pixel units in the same row is translational symmetric about the data line 2, and the first pixel electrode 301 in the adjacent pixel units in the same column is translational symmetric about the gate line 1.

[0074] Specifically, referring to Figure 3 , Figure 7 and Figure 9 , the inclination direction and the inclination angle of the first pixel electrode 301, the second pixel electrode 302, the third pixel electrode 303 and the fourth pixel electrode 304 are all the same. Thus, under different viewing angles, the anisotropy of the liquid crystal is well averaged. The color difference of the display panel can be further reduced. As shown in Figure 9 , Figure 9 is one of the light efficiency diagrams of the first pixel electrode 301 in the pixel unit. As shown in Figure 10 , Figure 10 is another light efficiency diagram of the first pixel electrode 301 in the pixel unit. In this embodiment, the light efficiency diagram of the pixel unit in which the first pixel electrode 301 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit in which the second pixel electrode 302 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit in which the third pixel electrode 303 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit in which the fourth pixel electrode 304 is located is as shown in Figure 9 .

[0075] Embodiment two: the first pixel electrode 301 in the adjacent pixel units in the same row is translational symmetric about the data line 2, and the first pixel electrode 301 in the adjacent pixel units in the same column is mirror symmetric about the gate line 1.

[0076] Specifically, referring to Figure 4 and Figures 7-10 , the tilt directions and tilt angles of the first pixel electrode 301 and the second pixel electrode 302 are the same, and the tilt directions of the first pixel electrode 301 and the third pixel electrode 303 are mirror-symmetric about the gate line 1. The tilt directions and tilt angles of the third pixel electrode 303 and the fourth pixel electrode 304 are the same, and the tilt angles of the second pixel electrode 302 and the fourth pixel electrode 304 are mirror-symmetric about the gate line 1. Thus, the anisotropy of the liquid crystal is well averaged under different viewing angles. The color difference of the display panel can be further reduced. In this embodiment, the light efficiency diagram of the pixel unit in which the first pixel electrode 301 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit in which the second pixel electrode 302 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit in which the third pixel electrode 303 is located is as shown in Figure 10 . The light efficiency diagram of the pixel unit in which the fourth pixel electrode 304 is located is as shown in Figure 10 .

[0077] Embodiment Three: The first pixel electrode 301 in adjacent pixel units in the same row is mirror-symmetric about the data line 2, and the first pixel electrode 301 in adjacent pixel units in the same column is translation-symmetric about the gate line 1.

[0078] Specifically, referring to Figure 5 and Figures 7-10 , the tilt directions of the first pixel electrode 301 and the second pixel electrode 302 are mirror-symmetric about the data line 2, and the tilt directions of the first pixel electrode 301 and the third pixel electrode 303 are the same. The tilt directions of the third pixel electrode 303 and the fourth pixel electrode 304 are mirror-symmetric about the data line 2, and the tilt directions of the second pixel electrode 302 and the fourth pixel electrode 304 are the same. Thus, the anisotropy of the liquid crystal is well averaged under different viewing angles. The color difference of the display panel can be further reduced. In this embodiment, the light efficiency diagram of the pixel unit in which the first pixel electrode 301 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit in which the third pixel electrode 303 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit in which the second pixel electrode 302 is located is as shown in Figure 10 . The light efficiency diagram of the pixel unit in which the fourth pixel electrode 304 is located is as shown in Figure 10 .

[0079] Embodiment Four: The first pixel electrode 301 in adjacent pixel units in the same row is mirror-symmetric about the data line 2, and the first pixel electrode 301 in adjacent pixel units in the same column is mirror-symmetric about the gate line 1.

[0080] Specifically, referring toFigure 6 and Figures 7-10 , the tilt directions of the first pixel electrode 301 and the second pixel electrode 302 are mirror-symmetrical with respect to the data line 2, and the tilt directions of the first pixel electrode 301 and the third pixel electrode 303 are mirror-symmetrical with respect to the gate line 1. The tilt directions of the third pixel electrode 303 and the fourth pixel electrode 304 are mirror-symmetrical with respect to the data line 2, and the tilt directions of the second pixel electrode 302 and the fourth pixel electrode 304 are mirror-symmetrical with respect to the gate line 1. Therefore, under different viewing angles, the anisotropy of the liquid crystal is well averaged. The color difference of the display panel can be further reduced. In this embodiment, the light efficiency diagram of the pixel unit where the first pixel electrode 301 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit where the fourth pixel electrode 304 is located is as shown in Figure 9 . The light efficiency diagram of the pixel unit where the second pixel electrode 302 is located is as shown in Figure 10 . The light efficiency diagram of the pixel unit where the third pixel electrode 303 is located is as shown in Figure 10 .

[0081] Taking the four-domain display as an example, it is the same as the above-described first to fourth embodiments, that is, the pixel units are arranged in a two-row and two-column manner. The difference is that the structure of the first strip electrode 310 and the first electrode line 41 and the second sub-electrode line 42 in each pixel unit is in the shape of a Chinese character 'horse'. In the energized state, the embodiments include but are not limited to the following several types;

[0082] Embodiment Five: Referring to Figure 11 and Figure 12 , the tilt directions and tilt angles of the first pixel electrode 301, the second pixel electrode 302, the third pixel electrode 303, and the fourth pixel electrode 304 are the same, and the first electrode line 41 and the second electrode line are commonly connected to both ends of the same pixel electrode 31. In this embodiment, the light efficiency diagram of the pixel unit where the first pixel electrode 301 is located is as shown in Figure 15 . The light efficiency diagram of the pixel unit where the second pixel electrode 302 is located is as shown in Figure 15 . The light efficiency diagram of the pixel unit where the third pixel electrode 303 is located is as shown in Figure 15 . The light efficiency diagram of the pixel unit where the fourth pixel electrode 304 is located is as shown in Figure 15 .

[0083] Embodiment Six: Referring to Figure 13 and Figure 14 , the tilt directions and tilt angles of the first pixel electrode 301, the second pixel electrode 30, the third pixel electrode 303, and the fourth pixel electrode 304 are the same, and the first sub-electrode line 41 and the second sub-electrode line are commonly connected to both ends of the same two pixel electrodes 31. In this embodiment, the light efficiency diagram of the pixel unit where the first pixel electrode 301 is located is as shown in Figure 15The light efficiency map of the pixel unit where the second pixel electrode 302 is located is as shown in FIG. 3C. Figure 15 The light efficiency map of the pixel unit where the third pixel electrode 303 is located is as shown in FIG. 3D. Figure 15 The light efficiency map of the pixel unit where the fourth pixel electrode 304 is located is as shown in FIG. 3E. Figure 15

[0084] The present application also provides a display panel comprising the display substrate as mentioned in any one of the above embodiments. The specific structure and principle of the display substrate are the same as those of the above embodiments.

[0085] The terms "first", "second", and similar terms used in the present application and the claims are not intended to denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, the terms "one" or "a" or similar terms do not denote a quantity limitation, but mean that there is at least one, and if only one is meant, it will be separately stated. "Multiple" or "several" means two or more. The term "and / or" as used in the present application means any or all possible combinations of one or more associated listed items.

[0086] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present application.​

Claims

1. A display substrate, comprising gate lines extending along a first direction and arranged along a second direction, data lines extending along the second direction and arranged along the first direction, and a plurality of pixel units defined by the gate lines and the data lines insulatively crossing each other, characterized in that, Each of the pixel units comprises a first electrode layer, the first electrode layer comprises a plurality of first strip electrodes arranged in parallel, and the first strip electrodes extend along a third direction, an included angle between the third direction and the gate line is a first included angle, and the first included angle ranges from 70° to 85°. Each of the pixel units has a size in the first direction greater than a size in the second direction.

2. The display substrate of claim 1, wherein, The pixel unit further comprises at least one electrode line for connecting a plurality of the first strip electrodes, and a material of the electrode line is the same as a material of the first strip electrodes.

3. The display substrate according to claim 2, characterized in that, Each of the pixel units comprises a plurality of first strip electrodes arranged at intervals in the first direction and one electrode line, one end of the plurality of first strip electrodes is connected to the electrode line, and the other end forms a plurality of first openings between two adjacent first strip electrodes.

4. The display substrate of claim 3, wherein, The pixel unit is provided with a first electrode line and a second electrode line; wherein, The first electrode line and the second electrode line are respectively located at two ends of the first strip electrodes, and the first electrode line is used to connect part of the first strip electrodes, and the second electrode line is used to connect part of the first strip electrodes.

5. The display substrate of claim 4, wherein, The first strip electrodes connected to the first electrode line are first sub-strip electrodes, and the strip electrodes connected to the second electrode line are second sub-strip electrodes; wherein, One end of the first sub-strip electrodes is connected to the first electrode line, and the other end of the first sub-strip electrodes forms the first opening; One end of the second sub-strip electrodes is connected to the second electrode line, and the other end of the second sub-strip electrodes forms the first opening. 6.The display substrate of claim 5, wherein, At least one end of the first sub-strip electrodes is connected to the first electrode line, and the other end is connected to the second electrode line. 7.The display substrate according to any one of claims 2-6, wherein, The first electrode layer further comprises two second strip electrodes arranged in parallel, and the second strip electrodes extend along the second direction; The second strip electrodes are respectively located at two sides of the first strip electrodes, and the second strip electrodes are connected to the electrode line, and an included angle between the second strip electrodes and the first strip electrodes is a second included angle; wherein, The second included angle is smaller than the first included angle. 8.The display substrate of claim 3, wherein, The first strip electrodes have a projection of one end of the first strip electrodes with the first opening on the first electrode layer, and the projection overlaps a projection of the gate line on the first electrode layer; And / or The electrode line has a projection on the first electrode layer, and the projection overlaps the projection of the gate line on the first electrode layer. 9.The display substrate of claim 8, wherein, A connection part of the first strip electrodes and the electrode line has a first projection part on the first electrode layer, a projection of the gate line on the first electrode layer is a second projection part, and the first projection part overlaps the second projection part. 10.The display substrate of claim 1, wherein, The display substrate further comprises a plurality of pixel modules, the pixel modules are arranged in an array, each of the pixel modules comprises four pixel units, and the pixel units are arranged in a manner of two rows and two columns, wherein a row direction is the same as the first direction, and a column direction is the same as the second direction. 11.The display substrate of claim 10, wherein, In the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are translationally symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are translationally symmetrical about the gate line; or In the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are translationally symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are mirror-symmetrical about the gate line; or In the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are mirror-symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are translationally symmetrical about the gate line; or In the pixel module, the first strip-shaped electrodes in adjacent pixel units in the same row are mirror-symmetrical about the data line, and the first strip-shaped electrodes in adjacent pixel units in the same column are mirror-symmetrical about the gate line. 12.The display substrate of claim 1, wherein, The pixel unit further comprises a second electrode layer configured as a plate-shaped electrode; In each of the pixel units, the first electrode layer is a pixel electrode, and the second electrode layer is a common electrode; or The first electrode layer is a common electrode, and the second electrode layer is a pixel electrode.

13. A display panel, characterized by The display substrate comprises the pixel module of any one of claims 1-12.

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