Array substrate and mobile terminal

Abstract

The present application discloses an array substrate and a mobile terminal, in which a grayscale value of a first sub-pixel unit displaying a first color and a grayscale value of a second sub-pixel unit displaying a second color of the array substrate are both greater than a grayscale value of a third sub-pixel unit displaying a third color, and both acute angles formed by a first branch electrode of the first sub-pixel unit and a second branch electrode of the second sub-pixel unit and a horizontal viewing axis are both smaller than an acute angle formed by a third branch electrode of the third sub-pixel unit and the horizontal viewing axis.

Description

[Technical Field]

[0001] The present application relates to the display field, and in particular to an array substrate and a mobile terminal. [Background technology]

[0002] 2. Description of the Related Art Currently, flat panel displays such as liquid crystal displays (LCDs) occupy a leading position in the current flat panel display market due to their small size, light weight, thin profile, low power consumption, and no radiation.

[0003] As usage scenarios become more diverse, the display modes of LCD display panels also change depending on user needs. However, when a display panel that is originally intended for horizontal use is used vertically, the viewing angle of the display panel changes (switching from the original horizontal viewing angle to a vertical viewing angle), which can cause color shift problems, resulting in poor display effects for the display panel viewed by the user, affecting the user experience and resulting in customer complaints. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application provide an array substrate and a mobile terminal to solve the problem of color shift that occurs when a display panel that is originally used horizontally changes its viewing angle after being used vertically (switching from the original horizontal viewing angle to a vertical viewing angle). [Means for solving the problem]

[0005] In order to solve the above problems, the technical solutions provided in this application are as follows:

[0006] The present embodiment is An array substrate including a plurality of sub-pixel units, the pixel unit including a plurality of first sub-pixel units displaying a first color, a plurality of second sub-pixel units displaying a second color, and a plurality of third sub-pixel units displaying a third color, the first color, the second color, and the third color being different from each other, and in the same display state, the gradation value of the first color and the gradation value of the second color are all greater than the gradation value of the third color; the array substrate includes a pair of short sides parallel to a horizontal viewing axis and a pair of long sides perpendicular to the horizontal viewing axis; the first sub-pixel portion includes a first pixel electrode, the first pixel electrode includes at least two first branch electrodes extending in a first direction, and an acute angle between the first direction and the horizontal viewing axis is a first angle; the second sub-pixel portion includes a second pixel electrode, the second pixel electrode includes at least two second branch electrodes extending in a second direction, and an acute angle between the second direction and the horizontal viewing axis is a second angle; the third sub-pixel portion includes a third pixel electrode, the third pixel electrode includes at least two third branch electrodes extending in a third direction, and an acute angle between the third direction and the horizontal viewing axis is a third angle; An array substrate is provided, wherein the first angle is smaller than the third angle, and the second angle is smaller than the third angle.

[0007] In one embodiment, the first angle and / or the second angle is greater than or equal to 45°, and the third angle is greater than 45°.

[0008] In one embodiment, the first angle and / or the second angle are both less than or equal to 60°, and the third angle is less than or equal to 65°.

[0009] In one embodiment, the difference between the first angle and the third angle is greater than 0.1° and less than or equal to 10°; and / or The difference between the second angle and the third angle is greater than 0.1° and not greater than 10°.

[0010] In one embodiment, the difference between the first angle and the third angle is 5°, and the difference between the second angle and the third angle is 5°.

[0011] In one embodiment, the first angle and the second angle are equal.

[0012] In one embodiment, the first pixel electrode includes a cross-shaped first stem electrode, the first branch electrodes are connected to the first stem electrode, the first sub-pixel portion is divided into four pixel domain regions by the first stem electrode, the first branch electrodes are respectively disposed in the four pixel domain regions, the first branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the first stem electrode, and four acute angles formed by each of the extension directions of the first branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a first angle set; the second pixel electrode includes a cross-shaped second trunk electrode, the second branch electrodes are connected to the second trunk electrode, the second sub-pixel portion is divided into four pixel domain regions by the second trunk electrode, the second branch electrodes are respectively disposed in the four pixel domain regions, the second branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the second trunk electrode, and four acute angles formed by each of the extension directions of the second branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a second angle set; the third pixel electrode includes a cross-shaped third stem electrode, the third branch electrodes are connected to the third stem electrode, the third sub-pixel portion is divided into four pixel domain regions by the third stem electrode, the third branch electrodes are respectively disposed in the four pixel domain regions, the third branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the third stem electrode, and four acute angles formed by each of the extension directions of the third branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a third angle set; Any of the third angles in the third set of angles is greater than any of the first angles in the first set of angles, and any of the third angles in the third set of angles is greater than any of the second angles in the second set of angles.

[0013] In one embodiment, the third angles in the third angle set are all the same, the second angles in the second angle set are all the same, and the first angles in the first angle set are all the same.

[0014] In one embodiment, the third angle in the third set of angles has a degree of 55°, and the first angle and the second angle in the first set of angles and the second set of angles both have a degree of 50°.

[0015] In one embodiment, the first color and the second color both include one of red and green, and the third color includes blue.

[0016] The present application relates to a mobile terminal including an array substrate and a terminal body, wherein the terminal body and the array substrate are combined together, The array substrate comprises: a plurality of sub-pixel units, the pixel unit including a plurality of first sub-pixel units displaying a first color, a plurality of second sub-pixel units displaying a second color, and a plurality of third sub-pixel units displaying a third color, the first color, the second color, and the third color being different from each other, and in the same display state, the gradation value of the first color and the gradation value of the second color are all greater than the gradation value of the third color; the array substrate includes a pair of short sides parallel to a horizontal viewing axis and a pair of long sides perpendicular to the horizontal viewing axis; the first sub-pixel portion includes a first pixel electrode, the first pixel electrode includes at least two first branch electrodes extending in a first direction, and an acute angle between the first direction and the horizontal viewing axis is a first angle; the second sub-pixel portion includes a second pixel electrode, the second pixel electrode includes at least two second branch electrodes extending in a second direction, and an acute angle between the second direction and the horizontal viewing axis is a second angle; the third sub-pixel portion includes a third pixel electrode, the third pixel electrode includes at least two third branch electrodes extending in a third direction, and an acute angle between the third direction and the horizontal viewing axis is a third angle; The mobile terminal further provides that the first angle is smaller than the third angle, and the second angle is smaller than the third angle.

[0017] In one embodiment, the first angle and / or the second angle is greater than or equal to 45°, and the third angle is greater than 45°.

[0018] In one embodiment, the first angle and / or the second angle are both less than or equal to 60°, and the third angle is less than or equal to 65°.

[0019] In one embodiment, the difference between the first angle and the third angle is greater than 0.1° and less than or equal to 10°; and / or The difference between the second angle and the third angle is greater than 0.1° and not greater than 10°.

[0020] In one embodiment, the difference between the first angle and the third angle is 5°, and the difference between the second angle and the third angle is 5°.

[0021] In one embodiment, the first angle and the second angle are equal.

[0022] In one embodiment, the first pixel electrode includes a cross-shaped first stem electrode, the first branch electrodes are connected to the first stem electrode, the first sub-pixel portion is divided into four pixel domain regions by the first stem electrode, the first branch electrodes are respectively disposed in the four pixel domain regions, the first branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the first stem electrode, and four acute angles formed by each of the extension directions of the first branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a first angle set; the second pixel electrode includes a cross-shaped second trunk electrode, the second branch electrodes are connected to the second trunk electrode, the second sub-pixel portion is divided into four pixel domain regions by the second trunk electrode, the second branch electrodes are respectively disposed in the four pixel domain regions, the second branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the second trunk electrode, and four acute angles formed by each of the extension directions of the second branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a second angle set; the third pixel electrode includes a cross-shaped third stem electrode, the third branch electrodes are connected to the third stem electrode, the third sub-pixel portion is divided into four pixel domain regions by the third stem electrode, the third branch electrodes are respectively disposed in the four pixel domain regions, the third branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the third stem electrode, and four acute angles formed by each of the extension directions of the third branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a third angle set; Any of the third angles in the third set of angles is greater than any of the first angles in the first set of angles, and any of the third angles in the third set of angles is greater than any of the second angles in the second set of angles.

[0023] In one embodiment, the third angles in the third angle set are all the same, the second angles in the second angle set are all the same, and the first angles in the first angle set are all the same.

[0024] In one embodiment, the third angle in the third set of angles has a degree of 55°, and the first angle and the second angle in the first set of angles and the second set of angles both have a degree of 50°.

[0025] In one embodiment, the first color and the second color both include one of red and green, and the third color includes blue. [Effects of the Invention]

[0026] The array substrate of the present application includes three types of sub-pixel units that display different colors, and in accordance with the fact that the first, second, and third sub-pixel units display different grayscale values ​​in the same display state, the array substrate sets an acute angle between a first electrode in a first pixel unit and the horizontal viewing axis as a first angle, an acute angle between a second electrode in a second pixel unit and the horizontal viewing axis as a second angle, and an acute angle between a third electrode in a third pixel unit and the horizontal viewing axis as a third angle, and the first angle is smaller than the third angle, and the second angle is smaller than the third angle. By controlling the angle to be smaller than the normal angle and adjusting the electrode extension directions of the three sub-pixel sections respectively, more targeted adjustment can be made to the branch electrodes of the sub-pixel sections with low gradation values, which have poorer viewing angle characteristics, thereby optimizing the degree of improvement in the emission gradation of the three types of sub-pixel sections as a whole and further optimizing the improvement in the vertical viewing angle of the sub-pixel sections.Furthermore, the degree of color shift at vertical viewing angles is improved, and the problem of color shift at vertical viewing angles of the display panel is resolved. [Brief explanation of the drawings]

[0027] [Figure 1a] 1 is a structural schematic diagram of a first sub-pixel portion of a monodomain provided in an embodiment of the present application; [Figure 1b] FIG. 2 is a structural schematic diagram of a second sub-pixel portion of a monodomain provided in an embodiment of the present application. [Figure 1c] FIG. 2 is a structural schematic diagram of a third sub-pixel portion of a monodomain provided in an embodiment of the present application. [Figure 2] 1 is a schematic diagram illustrating a usage mode of a display panel assembled using an array substrate provided in an embodiment of the present application. [Figure 3] 1 is a structural schematic diagram of a display panel assembled using an array substrate provided in an embodiment of the present application; [Figure 4a] 1 is a structural schematic diagram of a first sub-pixel portion of four domains provided in an embodiment of the present application; [Figure 4b] FIG. 2 is a structural schematic diagram of the second sub-pixel portion of the four domains provided in the embodiment of the present application. [Figure 4c] FIG. 2 is a structural schematic diagram of the third sub-pixel unit of the four domains provided in the embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0028] The present application provides an array substrate and a mobile terminal. In order to clarify the purpose, technical solution, and effects of the present application, the present application will be described in more detail below by way of examples with reference to the accompanying drawings. It should be understood that the specific examples described herein are merely for the purpose of interpreting the present application and are not intended to limit the present application.

[0029] The present application provides the following technical solutions, specifically referring to Figures 1a to 1c, 2, 3 and 4a to 4c. [Example]

[0030] An embodiment of the present application provides an array substrate. As shown in FIGS. 1a to 1c, the array substrate includes: a plurality of sub-pixel units, the pixel unit including a plurality of first sub-pixel units 10 displaying a first color, a plurality of second sub-pixel units 20 displaying a second color, and a plurality of third sub-pixel units 30 displaying a third color, the first color, the second color, and the third color being different from each other, and in the same display state, the gradation value of the first color and the gradation value of the second color are all greater than the gradation value of the third color; The array substrate includes a pair of short sides a parallel to a horizontal viewing axis 40 and a pair of long sides b perpendicular to the horizontal viewing axis 40; The first sub-pixel region 10 includes a first pixel electrode 101, the first pixel electrode 101 includes at least two first branch electrodes 1012 extending in a first direction F1, and an acute angle between the first direction F1 and the horizontal viewing axis 40 is a first angle α1; The second sub-pixel region 20 includes a second pixel electrode 201, the second pixel electrode 201 includes at least two second branch electrodes 2012 extending in a second direction F2, and an acute angle between the second direction F2 and the horizontal viewing axis 40 is a second angle α2; The third sub-pixel region 30 includes a third pixel electrode 301, the third pixel electrode 301 includes at least two third branch electrodes 3012 extending in a third direction F3, and an acute angle between the third direction F3 and the horizontal viewing axis 40 is a third angle α3; The first angle α1 is smaller than the third angle α3, and the second angle α2 is smaller than the third angle α3.

[0031] It should be noted that the array substrate of the present application is then assembled with a color film substrate to form a final product, a display panel. The display panel may include a liquid crystal display panel, specifically a VA (vertically aligned) liquid crystal display panel, and hereinafter, in this embodiment, the assembled final product will be described as a liquid crystal display panel.

[0032] 3, the liquid crystal display panel includes a color film substrate CF and a TFT array substrate AF arranged opposite to each other, and a liquid crystal layer LC arranged between the TFT substrate and the color film substrate CF. The color film substrate CF includes red, green, and blue color resists. A plurality of sub-pixel units are included on the array substrate AF, and one sub-pixel unit is provided corresponding to one color resist on the color film substrate CF.

[0033] Specifically, the first color, second color, and third color include, but are not limited to, any combination of three of red (R), green (G), and blue (B), and in the same display state, the gradation values ​​of the first color and the second color are all greater than the gradation value of the third color.

[0034] In this embodiment, the first color is red, the second color is green, and the third color is blue, for example. That is, the first sub-pixel portion 10 corresponds to the red color resist, the second sub-pixel portion 20 corresponds to the green color resist, and the third sub-pixel portion 30 corresponds to the blue color resist.

[0035] It should be noted that in the array substrate provided in the embodiment of the present invention, the first pixel electrode 101 in the first sub-pixel region 10, the second pixel electrode 201 in the second sub-pixel region 20, and the third pixel electrode 301 in the third sub-pixel region 30 may have a mono-domain structure, a two-domain structure, or a multi-domain structure, and the present invention is not limited thereto.

[0036] 1a, the first sub-pixel unit 10 includes a stem electrode (which is a shielding electrode in a monodomain structure) and at least two first branch electrodes 1012 connected to the stem electrode, the two first branch electrodes 1012 extending in the same direction, F1, and forming a first angle α1 between the first direction F1 and the horizontal viewing axis 40. As shown in FIG. 1b, the second sub-pixel unit 20 includes a stem electrode (which is a shielding electrode in a monodomain structure) and at least two second branch electrodes 2012 connected to the stem electrode, the two second branch electrodes 2012 extending in the same direction, F2, and forming a second angle α2 between the second direction F2 and the horizontal viewing axis 40. As shown in Figure 1c, in the third sub-pixel section 30, the third sub-pixel section 30 includes a stem electrode (which is a shielding electrode in a monodomain structure) and at least two third branch electrodes 3012 connected to the stem electrode, and the extension directions of the two third branch electrodes 3012 are the same, both extending in a third direction F3, and the included angle between the third direction F3 and the horizontal viewing axis 40 is a third angle α3. It should be explained that when an LCD panel is used to display different skin tones (skin tones are mixed colors), the skin tones are made up of three sub-pixels of different colors, R, G, and B. However, the difference is that the different skin tones are produced by displaying different gradation values ​​in the R, G, and B sub-pixels. According to the above principle, when improving the viewing angle, the degree of improvement required for the three sub-pixels of different gradations differs. Of the three colors that make up the mixed color, the sub-pixel portion that displays blue is usually a low gradation sub-pixel portion, and the viewing angle characteristics of the low gradation sub-pixel portion that displays blue in a VA LCD panel are poorer (i.e., the difference between normal viewing and oblique viewing is greater).

[0037] When a user views the display screen of a display panel, the viewing angle varies. The angle at which the viewing line of sight is perpendicular to the display panel is the normal viewing angle, and color shift does not occur. However, when the viewing line of sight deviates from the normal viewing angle, it becomes an oblique viewing angle, and color shift occurs. The oblique viewing angle is in the range of 0° to 90°, not including the end points. As the oblique viewing angle increases, the degree of color shift of the display panel when viewed obliquely increases.

[0038] The array substrate of the present application is a rectangular array substrate, having a pair of short sides a and a pair of long sides b. As shown in FIG. 2, the typical use is landscape, with the long side b horizontal and the short side a vertical. However, in some use scenarios, the display panel needs to be adjusted to portrait mode, with the long side b vertical and the short side a horizontal. As shown in FIG. 2, although the user's viewing angle remains unchanged, switching the display panel from landscape to portrait mode results in a change in the visible length at the vertical viewing angle (i.e., from the original short side a to the long side b), resulting in color shift at the vertical viewing angle. Therefore, the present application adjusts the structure of the subpixel portion of the array substrate corresponding to the display panel to adjust the angle between the branch electrode of the pixel electrode in the subpixel portion and the horizontal viewing axis 40, thereby improving the degree of color shift at the vertical viewing angle.

[0039] Specifically, the horizontal viewing axis 40 is parallel to the short side a of the display panel and perpendicular to the long side b.

[0040] Specifically, the first angle α1 is controlled to be smaller than the third angle α3, and the second angle α2 is controlled to be smaller than the third angle α3. The included angle between the branch electrode of the sub-pixel portion with a low gradation value and the horizontal viewing axis 40 is adjusted separately to be distinct from the included angle between the branch electrode of the sub-pixel portion with other gradation values ​​and the horizontal viewing axis 40, thereby achieving the best improvement in the emission gradation of the three types of sub-pixel portions as a whole.

[0041] The array substrate is configured to include three types of sub-pixel units that display different colors. In accordance with the fact that the first sub-pixel unit 10, the second sub-pixel unit 20, and the third sub-pixel unit 30 display different grayscale values ​​in the same display state, the acute angle between the first electrode P1 in the first pixel unit and the horizontal viewing axis 40 is set as a first angle α1, the acute angle between the second electrode P2 in the second pixel unit and the horizontal viewing axis 40 is set as a second angle α2, and the acute angle between the third electrode P3 in the third pixel unit and the horizontal viewing axis 40 is set as a third angle α3. When the first angle α1 is smaller than the third angle α3, By controlling the electrode extension directions of the three sub-pixel units so that the first angle α1 is smaller than the second angle α2 and the third angle α3 is smaller, and adjusting the electrode extension directions of the three sub-pixel units respectively, more targeted adjustment can be made to the branch electrodes of the sub-pixel units with low gradation values, which have poorer viewing angle characteristics. This maximizes the degree of improvement in the emission gradation of the three types of sub-pixel units as a whole, further optimizes the improvement in the vertical viewing angle of the sub-pixel units, and further improves the degree of color shift at vertical viewing angles, thereby resolving the problem of color shift at vertical viewing angles of the display panel.

[0042] In one embodiment, the first angle α1 and / or the second angle α2 are greater than or equal to 45°, and the third angle α3 is greater than 45°.

[0043] Specifically, when the acute angle between the branch electrodes and the horizontal viewing axis 40 is 45°, the display is uniform at both the horizontal and vertical viewing angles of the display panel (even if there is color shift, the oblique angle is the same and the degree of color shift is the same at both the horizontal and vertical viewing angles). When the angle is greater than 45°, the arrangement direction of the branch electrodes of the pixel electrode in the sub-pixel section approaches the vertical viewing angle of the display panel (relative to the horizontal viewing angle).

[0044] In addition, by setting the first angle α1 and / or the second angle α2 to be 45° or more and the third angle α3 to be greater than 45°, the display panel approaches the vertical viewing angle when the degree of color shift at the horizontal viewing angle is small, and the color shift problem of the display panel at the vertical viewing angle is improved to some extent. Furthermore, by setting the third angle α3 to be greater than the first angle α1 and the second angle α2, the degree of color shift of the third sub-pixel unit 30 relative to the first sub-pixel unit 10 and the second sub-pixel unit 20 is adaptively adjusted, and the improvement regarding the vertical viewing angle of the sub-pixel units is further optimized.

[0045] In one embodiment, the first angle α1 and / or the second angle α2 are both equal to or less than 60°, and the third angle α3 is equal to or less than 65°.

[0046] Specifically, when the acute angle between the branch electrodes and the horizontal viewing axis 40 is 45°, the display panel will have uniform display at both horizontal and vertical viewing angles (even if color shift occurs, the oblique viewing angle will be the same, and the degree of color shift will be the same at both horizontal and vertical viewing angles). By controlling the first angle α1 and / or the second angle α2 to be 60° or less, the arrangement of the branch electrodes of the subpixel portion of the array substrate can be made closer to the vertical viewing angle without affecting normal use at the horizontal viewing angle. In addition, the more the branch electrodes of the pixel electrode deviate from 45°, the lower the transmittance of the corresponding subpixel, which will affect the display effect of the display panel.

[0047] Specifically, from the above range, it can be seen that the difference between the first angle α1 and the third angle α3 is greater than 0.1° and less than 20°, and the difference between the second angle α2 and the third angle α3 is greater than 0.1° and less than 20°.

[0048] It is understood that by setting the first angle α1 and / or the second angle α2 to be 60° or less and the third angle α3 to be 65° or less, it is possible to ensure that the adjustment of the color shift problem at the vertical viewing angle of the display panel does not affect the transmittance of the display panel, and to prevent a decrease in the display effect of the display panel.

[0049] In one embodiment, the difference between the first angle α1 and the third angle α3 is greater than 0.1° and less than or equal to 10°, and / or the difference between the second angle α2 and the third angle α3 is greater than 0.1° and less than or equal to 10°.

[0050] Specifically, based on the same principle as in the above embodiment, in order to prevent color differences in the white screen consisting of the emission of three types of sub-pixels, R, G, and B, the angle differences between the first angle α1, the second angle α2, and the third angle α3 are further controlled to be within the range of 0.1° to 10° (including the end values).

[0051] It can be seen that by further controlling the angle difference between the first angle α1, the second angle α2 and the third angle α3 to within the range of 0.1° to 10°, the degree of color shift at the vertical viewing angle of the display panel assembled with the array substrate can be further reduced without affecting the normal display of the display panel.

[0052] In one embodiment, the difference between the first angle α1 and the third angle α3 is 5°, and the difference between the second angle α2 and the third angle α3 is 5°.

[0053] Specifically, the difference of 5° in this embodiment is a preferred embodiment, and the effect of this embodiment compared with the prior art and the synchronous adjustment of color misalignment can be compared with the following experimental comparison data.

[0054] In one embodiment, the first angle α1 and the second angle α2 are equal.

[0055] Specifically, the first angle α1 and the second angle α2 may be in the range of 45° or more and 60° or less.

[0056] Furthermore, since there is not a large difference in gradation value between the color displayed in the first sub-pixel section 10 and the color displayed in the second sub-pixel section 20, it can be understood that by setting the first angle α1 and the second angle α2 to be equal, the manufacturing process can be further simplified and the difficulty of manufacturing the array substrate can be reduced.

[0057] In one embodiment, the first pixel electrode 101 includes a cross-shaped first stem electrode 1011, the first branch electrodes 1012 are connected to the first stem electrode 1011, the first sub-pixel unit 10 is divided into four pixel domain regions by the first stem electrode 1011, the first branch electrodes 1012 are respectively disposed in the four pixel domain regions, the first branch electrodes 1012 in the four pixel domain regions extend in four different directions from the intersection center of the first stem electrode 1011, and four acute angles formed by the extension directions of the first branch electrodes 1012 in the four pixel domain regions and the horizontal viewing axis 40 constitute a first angle set; the second pixel electrode 201 includes a cross-shaped second stem electrode 2011, the second branch electrode 2012 is connected to the second stem electrode 2011, the second sub-pixel unit 20 is divided into four pixel domain regions by the second stem electrode 2011, the second branch electrodes 2012 are respectively disposed in the four pixel domain regions, the second branch electrodes 2012 in the four pixel domain regions extend in four different directions from the intersection center of the second stem electrode 2011, and four acute angles formed by the extension directions of the second branch electrodes 2012 in the four pixel domain regions and the horizontal viewing axis 40 constitute a second angle set; the third pixel electrode 301 includes a cross-shaped third stem electrode 3011, the third branch electrodes 3012 are connected to the third stem electrode 3011, the third sub-pixel unit 30 is divided into four pixel domain regions by the third stem electrode 3011, the third branch electrodes 3012 are disposed in the four pixel domain regions, the third branch electrodes 3012 in the four pixel domain regions extend in four different directions from a crossing center of the third stem electrode 3011, and four acute angles formed by the extension directions of the third branch electrodes 3012 in the four pixel domain regions and the horizontal viewing axis 40 constitute a third angle set; 4a, 4b, and 4c, each sub-pixel has a four-domain structure, in which the first stem electrode 1011, the second stem electrode 2011, and the third stem electrode 3011 are all cross-shaped, the first stem electrode 1011 is disposed at the center of the first sub-pixel 10, and the first sub-pixel 10 is divided into four domains of equal area. The second stem electrode 2011 and the third stem electrode 3011 are disposed in the second sub-pixel 20 and the third stem electrode 3011 in the third sub-pixel 30, respectively, in the same manner as the first stem electrode 1011.

[0058] Specifically, in the first sub-pixel unit, the first branch electrodes 1012 extend in different directions in the four pixel domain regions (i.e., there are four first sub-directions), i.e., the first direction F1 includes any of the four first sub-directions. The second and third sub-pixel units 20 and 30 have the same structure as the first sub-pixel unit, i.e., the second direction F2 includes any of the four second sub-directions (the second branch electrodes 2012 extend in different directions in the four pixel domain regions), and the third direction F3 includes any of the four third sub-directions (the third branch electrodes 3012 extend in different directions in the four pixel domain regions).

[0059] In one specific embodiment, as shown in Figures 4a, 4b, and 4c, the electrode arrangement in Figures 4b and 4c is similar to that in Figure 4a, with the main difference being that the included angle between the branch electrodes in each pixel domain in Figure 4c and the horizontal viewing axis 40 is different from the included angle between the branch electrodes in each pixel domain in Figures 4a and 4b and the horizontal viewing axis 40.

[0060] 4a, the first sub-pixel region 10 is divided into four pixel domains by the first stem electrodes 1011, which are arranged counterclockwise in the order of a first pixel domain A1, a second pixel domain A2, a third pixel domain A3, and a fourth pixel domain A4. The first branch electrodes 1012 in the four pixel domains are arranged counterclockwise in the order of a first electrode P1, a second electrode P2, a third electrode P3, and a fourth electrode P4, and the four electrodes extend in four directions from the intersection of the first stem electrodes 1011 as the origin. When the horizontal viewing axis 40 is defined as the X-axis and the direction extending to the right of the horizontal viewing axis 40 is defined as the positive direction, the value of the angle a of the first electrode P1 is in the range of 45° to 60° (the acute angle between the first electrode P1 and the horizontal viewing axis 40 is in the range of 45° to 60°), and specifically, any one of 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, and 60° can be selected. The value of the angle b of the second electrode P2 is in the range of 135° to 120° (the acute angle between the second electrode P2 and the horizontal viewing axis 40 is in the range of 45° to 60°), and specifically, any one of 135°, 134°, 133°, 132°, 131°, 130°, 129°, 128°, 127°, 126°, 125°, 124°, 123°, 122°, 121°, and 120° can be selected. The value of the angle c of the third electrode P3 is in the range of 225° to 240° (the acute angle between the third electrode P3 and the horizontal viewing axis 40 is in the range of 45° to 60°), and specifically, any one of 225°, 226°, 227°, 228°, 229°, 230°, 231°, 232°, 233°, 234°, 235°, 236°, 237°, 238°, 239°, and 240° can be selected. The value of the angle d of the fourth electrode P4 ranges from 315° to 300° (the acute angle range between the fourth electrode P4 and the horizontal viewing axis 40 is 45° to 60°), and specifically, any one of 315°, 314°, 313°, 312°, 311°, 310°, 309°, 308°, 307°, 306°, 305°, 304°, 303°, 302°, 301°, and 300° can be selected.

[0061] In FIG. 4b, the structure of the second sub-pixel unit 20 is the same as that of the first sub-pixel unit 10, and the range of values ​​of the angles of each electrode (a21, a22, a23, a24) is also the same, but detailed description thereof will be omitted here.

[0062] In Figure 4c, the third angle α3 of the third branch electrode 3012 of the third subpixel section 30 is 5° larger than the first angle α1 of the first branch electrode 1012 of the first subpixel section 10 and the second angle α2 of the second branch electrode 2012 of the second subpixel section 20.

[0063] In the third sub-pixel region 30, the third stem electrodes 3011 divide the third sub-pixel region 30 into four pixel domains, which are arranged counterclockwise in the order of a first pixel domain A1, a second pixel domain A2, a third pixel domain A3, and a fourth pixel domain A4. The first branch electrodes 1012 in the four pixel domains are arranged counterclockwise in the order of a first electrode P1, a second electrode P2, a third electrode P3, and a fourth electrode P4. The four electrodes extend in four directions from the intersection of the first stem electrodes 1011 as the origin. When the horizontal viewing axis 40 is defined as the X-axis and the direction extending to the right of the horizontal viewing axis 40 is defined as the positive direction, the value of the angle e of the first electrode P1 is in the range of 50° to 65° (the acute angle between the first electrode P1 and the horizontal viewing axis 40 is in the range of 55° to 65°), and specifically, any one of 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, and 65° can be selected. The value of the angle f of the second electrode P2 is in the range of 130° to 115° (the acute angle between the second electrode P2 and the horizontal viewing axis 40 is in the range of 55° to 65°), and specifically, any one of 130°, 129°, 128°, 127°, 126°, 125°, 124°, 123°, 122°, 121°, 120°, 119°, 118°, 117°, 116°, and 115° can be selected. The value of the angle g of the third electrode P3 is in the range of 230° to 245° (the acute angle between the third electrode P3 and the horizontal viewing axis 40 is in the range of 55° to 65°), and specifically, any one of 230°, 231°, 232°, 233°, 234°, 235°, 236°, 237°, 238°, 239°, 240°, 241°, 242°, 243°, 244°, and 245° can be selected. The value of the angle h of the fourth electrode P4 is in the range of 310° to 295° (the acute angle between the fourth electrode P4 and the horizontal viewing axis 40 is in the range of 55° to 65°), and specifically, any one of 310°, 309°, 308°, 307°, 306°, 305°, 304°, 303°, 302°, 301°, 300°, 299°, 298°, 297°, 296°, and 295° can be selected. Specifically, within the above range, the first set of angles may be 45°, 46°, 45°, 46°, the second set of angles may be 45°, 46°, 45°, 46°, and the third set of angles may be 50°, 61°, 50°, 61°.

[0064] Specifically, any of the third angles α3 in the third angle set is greater than any of the first angles α1 in the first angle set, and any of the third angles α3 in the third angle set is greater than any of the second angles α2 in the second angle set.

[0065] In addition, by providing a four-domain structure, in adjusting the problem of color shift at vertical viewing angles, the array substrate can equalize the aperture ratio between different domains in the pixel section by balancing the non-transmitting parts of the thin-film transistors and the light-shielding areas of via holes, etc., thereby solving the technical issue of color shift at wide viewing angles of the LCD panel caused by different aperture ratios of the pixel structure domains, and it is understood that the problem of color shift is improved to a certain extent regardless of the viewing angle of the display panel.

[0066] In one embodiment, the third angles α3 in the third angle set are all the same, the second angles α2 in the second angle set are all the same, and the first angles α1 in the first angle set are all the same.

[0067] Specifically, all angles within one angle set are the same (i.e., as shown in Figures 4a, 4b, and 4c, the branch electrodes in the four pixel domains of the first sub-pixel unit 10, the second sub-pixel unit 20, and the third sub-pixel unit 30 are all arranged centrally symmetrically with respect to the intersection point of the corresponding stem electrodes), i.e., the first angle set is 45°, 45°, 45°, 45°, the second angle set is 45°, 45°, 45°, 45°, and the third angle set is 50°, 50°, 50°, 50°.

[0068] Furthermore, by setting the plurality of third angles α3 in the third angle set to be the same, the plurality of second angles α2 in the second angle set to be the same, and the plurality of first angles α1 in the first angle set to be the same, it can be understood that the branch electrodes in the four pixel domain regions in the same pixel unit will be symmetrically distributed, and the display effect of the display panel will be more uniform.

[0069] Furthermore, an embodiment of the present application further provides a mobile terminal including the array substrate and a terminal body according to any one of the above embodiments, wherein the terminal body and the array substrate are combined together. <Experimental Example>

[0070] 1. Evaluation criteria As a definition of the improvement in color shift, a method for evaluating the change in saturation in strabismus relative to saturation in normal vision is provided. Dc=C 斜視 / C 正視 In the formula, C 斜視 represents the saturation in strabismus, and C 正視 represents the saturation under normal vision.

[0071] The saturation of the sample is detected at different viewing angles using the CIE1976 L*a*b* color space (CIE LAB color space) color measurement system. TIFF0007784195000001.tif733In the formula, C represents saturation, a represents red-green color chromaticity, and a change in the value from positive to negative indicates that the color changes from red (positive) to green (negative), and b represents yellow-blue color chromaticity, and a change in the value from positive to negative indicates that the color changes from yellow (positive) to blue (negative).

[0072] 2. Detecting selected display samples In this application, tests were conducted using four types of skin tones (colors) as the standard, and all display samples were detected using a display panel with a sub-pixel section having a four-domain structure as the test sample, and the raw data is the ratio of saturation under oblique viewing at different oblique viewing angles to saturation under normal viewing.

[0073] Skin 2, skin 4, skin 5, and skin 6 were selected as four types of skin color, and the display gradation values ​​of skin 2, skin 4, skin 5, and skin 6 are shown in Table 1.

[0074] [Table 1]

[0075] 3. Detection blank examples, examples, comparative examples and detection results The comparative example is a general color misregistration adjustment method, that is, the acute angles between the pixel electrodes in the three sub-pixel portions of R, G, and B and the horizontal viewing axis 40 are all 50°. The blank example is a conventional design, that is, the acute angles between the pixel electrodes in the three R, G, and B sub-pixel regions and the horizontal viewing axis 40 are all 45°. The embodiment is one of the technical solutions of the present application, that is, the acute angles between the pixel electrodes in the R and G sub-pixel regions and the horizontal viewing axis 40 are both 50°, and the acute angle between the pixel electrodes in the B sub-pixel region and the horizontal viewing axis 40 is 55°.

[0076] [Table 2]

[0077] [Table 3]

[0078] [Table 4]

[0079] [Table 5]

[0080] From Table 2, it can be seen that when the display color is skin2, the embodiment of the present application has a greater improvement in color shift than the method of adjusting electrode synchronization in the R, G, and B subpixels, and the improvement in color shift of the present application is 3 to 5 times that of the comparative example.

[0081] From Table 3, it can be seen that when the display color is skin4, the embodiment of the present application has a greater improvement in color shift than the method of adjusting electrode synchronization in the R, G, and B subpixels, and the improvement in color shift of the present application is 3 to 4 times that of the comparative example.

[0082] From Table 4, it can be seen that when the display color is skin5, the embodiment of the present application has a greater improvement in color shift than the method of adjusting electrode synchronization in the R, G, and B subpixels, and the improvement in color shift of the present application is 4 to 7 times that of the comparative example.

[0083] From Table 5, it can be seen that when the display color is skin6, the embodiment of the present application has a greater improvement in color shift than the method of adjusting electrode synchronization in the R, G, and B subpixels, and the improvement in color shift of the present application is 2 to 4 times that of the comparative example. [Industrial Applicability]

[0084] As described above, the display panel of the present application includes three types of sub-pixel units that display different colors. In accordance with the fact that the first sub-pixel unit 10, the second sub-pixel unit 20, and the third sub-pixel unit 30 display different grayscale values ​​in the same display state, the acute angle between the first electrode P1 in the first pixel unit and the horizontal viewing axis 40 is set as a first angle α1, the acute angle between the second electrode P2 in the second pixel unit and the horizontal viewing axis 40 is set as a second angle α2, and the acute angle between the third electrode P3 in the third pixel unit and the horizontal viewing axis 40 is set as a third angle α3. When the first angle α1 is smaller than the third angle α3, The first angle α1 is controlled to be smaller than the second angle α2, and the second angle α2 is controlled to be smaller than the third angle α3. By adjusting the electrode extension directions of the three sub-pixel units respectively, more targeted adjustment can be made to the branch electrodes of the sub-pixel units with low gradation values, which have poorer viewing angle characteristics. This maximizes the degree of improvement in the emission gradation of the three types of sub-pixel units as a whole, further optimizes the improvement in color shift at vertical viewing angles of the sub-pixel units, and further improves the degree of color shift at vertical viewing angles, thereby solving the problem of color shift at vertical viewing angles of the display panel.

[0085] It is understood that a person skilled in the art can make equivalent substitutions or modifications based on the technical solutions and inventive concepts of the present application, and all such modifications and substitutions fall within the scope of protection of the claims attached hereto.

Claims

1. An array substrate for use in a vertically aligned liquid crystal display panel including a plurality of sub-pixel portions, the sub-pixel unit includes a plurality of first sub-pixel units that display red, a plurality of second sub-pixel units that display green, and a plurality of third sub-pixel units that display blue; the array substrate includes a pair of short sides parallel to a horizontal viewing axis and a pair of long sides perpendicular to the horizontal viewing axis, the horizontal viewing axis being a horizontal direction when the liquid crystal display panel is used in portrait orientation; the first sub-pixel portion includes a first pixel electrode, the first pixel electrode includes at least two first branch electrodes extending in a first direction, and an acute angle between the first direction and the horizontal viewing axis is a first angle; the second sub-pixel portion includes a second pixel electrode, the second pixel electrode includes at least two second branch electrodes extending in a second direction, and an acute angle between the second direction and the horizontal viewing axis is a second angle; the third sub-pixel portion includes a third pixel electrode, the third pixel electrode includes at least two third branch electrodes extending in a third direction, and an acute angle between the third direction and the horizontal viewing axis is a third angle; an array substrate in which the first angle and the second angle are set smaller than the third angle, the first angle and / or the second angle are set to 45° or more, and the third angle is set to be 45° or more larger, thereby improving the problem of color shift of the liquid crystal display panel at vertical viewing angles when the liquid crystal display panel displays colors in which the red and green gradation values ​​are larger than the blue gradation value.

2. The array substrate according to claim 1 , wherein the first angle and / or the second angle are both equal to or smaller than 60°, and the third angle is equal to or smaller than 65°.

3. the difference between the first angle and the third angle is greater than 0.1° and less than or equal to 10°; and / or 2. The array substrate according to claim 1, wherein the difference between the second angle and the third angle is greater than 0.1 degrees and less than or equal to 10 degrees.

4. 4. The array substrate according to claim 3, wherein the difference between the first angle and the third angle is 5 degrees, and the difference between the second angle and the third angle is 5 degrees.

5. The array substrate of claim 1 , wherein the first angle and the second angle are equal.

6. the first pixel electrode includes a cross-shaped first trunk electrode, the first branch electrodes are connected to the first trunk electrode, the first sub-pixel portion is divided into four pixel domain regions by the first trunk electrode, the first branch electrodes are disposed in the four pixel domain regions, the first branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the first trunk electrode, and four acute angles formed by the extension directions of the first branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a first angle set; the second pixel electrode includes a cross-shaped second trunk electrode, the second branch electrodes are connected to the second trunk electrode, the second sub-pixel portion is divided into four pixel domain regions by the second trunk electrode, the second branch electrodes are disposed in the four pixel domain regions, the second branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the second trunk electrode, and four acute angles formed by the extension directions of the second branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a second angle set; the third pixel electrode includes a cross-shaped third trunk electrode, the third branch electrodes are connected to the third trunk electrode, the third sub-pixel portion is divided into four pixel domain regions by the third trunk electrode, the third branch electrodes are disposed in the four pixel domain regions, the third branch electrodes in the four pixel domain regions extend in four different directions from a crossing center of the third trunk electrode, and four acute angles formed by the extension directions of the third branch electrodes in the four pixel domain regions and the horizontal viewing axis constitute a third angle set; 2. The array substrate of claim 1, wherein every third angle in the third set of angles is greater than every first angle in the first set of angles, and every third angle in the third set of angles is greater than every second angle in the second set of angles.

7. 7. The array substrate of claim 6, wherein the third angles in the third angle set are all the same, the second angles in the second angle set are all the same, and the first angles in the first angle set are all the same.

8. 8. The array substrate of claim 7, wherein the third angles in the third angle set have a degree of 55 degrees, and the first angles and the second angles in the first angle set and the second angle set both have a degree of 50 degrees.

9. A mobile terminal including the array substrate according to any one of claims 1 to 8 and a terminal body, wherein the terminal body and the array substrate are combined together. Mobile device.

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