Display panel

Abstract

The invention discloses a display panel which comprises a plurality of pixel electrodes, each pixel electrode comprises a plurality of first branch electrodes which are sequentially arranged at intervals in the first direction, and at least one structural parameter of the first branch electrodes in the same pixel electrode is different. The structure parameters comprise the distance between the adjacent first branch electrodes and the width of the first branch electrodes, diversification of the rotation angle of liquid crystal molecules can be increased, emergent light of the display panel is diffused, a part of light is emitted in the direction deviating from the side view position of the display panel, the brightness of the side view position is improved, and the display effect is improved. Therefore, the situation of visual angle brightness attenuation can be improved, and the visual angle of the display panel is increased.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel. Background Technology

[0002] A liquid crystal display panel typically consists of a color filter substrate, a thin film transistor array substrate, and a liquid crystal layer disposed between the two substrates. Pixel electrodes and common electrodes are respectively disposed on the inner sides of the two substrates. By applying voltage, the liquid crystal molecules are controlled to change direction, and the light from the backlight module is refracted to produce an image.

[0003] Because the brightness distribution of an LCD panel is approximately ellipsoidal, the brightness is highest at the front view position and decreases at the test position. Furthermore, the display brightness decreases rapidly as the side viewing angle increases, resulting in insufficient viewing angle of the LCD panel.

[0004] Therefore, it is necessary to provide a display panel to improve this deficiency. Summary of the Invention

[0005] This application provides a display panel that can improve the viewing angle of the display panel.

[0006] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, including a plurality of pixel electrodes, wherein the pixel electrodes include a plurality of first branch electrodes arranged sequentially at intervals along a first direction;

[0007] In the first direction, at least one structural parameter of the plurality of first branch electrodes in the same pixel electrode is different, and the structural parameter includes the distance between adjacent first branch electrodes and the width of the first branch electrode.

[0008] Optionally, in the same pixel electrode, the distance between adjacent first branch electrodes gradually increases or gradually decreases in the first direction.

[0009] Optionally, in the same pixel electrode, the absolute value of the difference between the distance between the first branch electrode and the distance between the first branch electrode and the adjacent first branch electrodes on both sides in the first direction is greater than or equal to 0.1 micrometers and less than or equal to 0.8 micrometers.

[0010] Optionally, in the same pixel electrode, the width of the first branch electrode gradually increases or decreases in the first direction.

[0011] Optionally, in the same pixel electrode, the absolute value of the difference in width between adjacent first branch electrodes is greater than or equal to 0.1 micrometers and less than or equal to 0.5 micrometers.

[0012] Optionally, in the first direction, the gradient trend of the distance between adjacent first branch electrodes in the same pixel electrode is opposite to the gradient trend of the width of the first branch electrode.

[0013] Optionally, the ratio of the width of the first branch electrode to the distance between adjacent first branch electrodes is greater than or equal to 0.2 and less than or equal to 2.

[0014] Optionally, in one of the first direction and the second direction, the orthographic projections of two adjacent pixel electrodes on the reference plane are mirror-symmetrical; in the other of the first direction and the second direction, the orthographic projections of two adjacent pixel electrodes on the reference plane are non-mirror-symmetrical, the reference plane is parallel to the light-emitting surface of the display panel, and the first direction is different from the second direction and perpendicular to the thickness direction of the display panel.

[0015] Optionally, in two adjacent pixel electrodes in the first direction, the gradient trend of at least one structural parameter in one pixel electrode in the first direction is opposite to the gradient trend of the corresponding structural parameter in the other pixel electrode. And / or, in two adjacent pixel electrodes in the second direction, the gradient trend of at least one of the structural parameters in one pixel electrode in the first direction is opposite to the gradient trend of the corresponding structural parameter in the other pixel electrode, wherein the first direction is different from the second direction and is perpendicular to the thickness direction of the display panel.

[0016] Optionally, in the first direction, the orthographic projections of two adjacent pixel electrodes onto the reference plane are mirror-symmetrical; In the second direction, the orthographic projections of two adjacent pixel electrodes onto the reference plane are non-mirror symmetrical, and the reference plane is parallel to the light-emitting surface of the display panel.

[0017] Optionally, the display panel has a display area, the display area includes a plurality of opening areas, each pixel electrode is disposed in a corresponding opening area, the opening area includes a first sub-area and a second sub-area arranged along a second direction, the first direction is different from the second direction and is perpendicular to the thickness direction of the display panel; The orthographic projection of the portion of the pixel electrode located in the first sub-region onto the reference plane is non-mirror symmetrical with the orthographic projection of the portion of the pixel electrode located in the second sub-region onto the reference plane, and the reference plane is parallel to the light-emitting surface of the display panel.

[0018] Optionally, the first branch electrode includes: The first sub-section, located in the first sub-region; and The second sub-part is located in the second sub-region and is connected to the first sub-part, wherein the extension direction of the first sub-part is different from the extension direction of the second sub-part. Wherein, the extension direction of the first sub-part has a first angle with the first direction, and the extension direction of the second sub-part has a second angle with the first direction, and the first angle and the second angle are different.

[0019] Optionally, the absolute value of the difference between the first included angle and the second included angle is greater than or equal to 5 degrees and less than or equal to 10 degrees.

[0020] Optionally, in the first direction, the orthographic projections of two adjacent pixel electrodes onto the reference plane are non-mirror symmetrical; In one of the second directions, the orthographic projections of two adjacent pixel electrodes onto the reference plane are mirror-symmetrical.

[0021] In the display panel of this application embodiment, by making at least one structural parameter of multiple first branch electrodes in the same pixel electrode different, including the distance between adjacent first branch electrodes and the width of the first branch electrodes, the diversity of the rotation angle of liquid crystal molecules can be increased, so as to diffuse the emitted light of the display panel and make a part of the light emitted in a direction away from the side view position of the display panel, thereby improving the brightness at the side view position, thereby improving the brightness attenuation of the viewing angle and increasing the viewing angle of the display panel.

[0022] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0025] Figure 1 A top view of a display panel provided for an embodiment of this application; Figure 2 A schematic diagram of sub-pixels in a first type of display panel provided for embodiments of this application; Figure 3 A schematic diagram of the sub-pixel arrangement in a first type of display panel provided for embodiments of this application; Figure 4 A schematic diagram of the sub-pixel arrangement in a second type of display panel provided for embodiments of this application; Figure 5 A schematic diagram of the sub-pixel arrangement in a third type of display panel provided for embodiments of this application; Figure 6 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0027] An embodiment of this application provides a display panel, which includes a plurality of pixel electrodes. The pixel electrodes include a plurality of first branch electrodes arranged sequentially at intervals along a first direction. In the first direction, at least one structural parameter of the plurality of first branch electrodes in the same pixel electrode is different. The structural parameter includes the distance between adjacent first branch electrodes and the width of the first branch electrodes.

[0028] In the embodiments of this application, by making at least one structural parameter of multiple first branch electrodes in the same pixel electrode different, including the distance between adjacent first branch electrodes and the width of the first branch electrodes, the diversity of the rotation angle of liquid crystal molecules can be increased, so as to diffuse the emitted light of the display panel and make a part of the light emitted in a direction deviating from the side view position of the display panel, thereby improving the brightness at the side view position, thereby improving the viewing angle brightness attenuation and increasing the viewing angle of the display panel.

[0029] like Figure 1 As shown, Figure 1 This is a top view of a display panel provided in an embodiment of this application. The display panel includes a display area AA and a non-display area NA, with the non-display area NA located around the display area AA. The display area AA is the area used to display an image, and may contain multiple sub-pixels and pixel driving circuits. The non-display area NA is the area used to house peripheral circuits, which may include, but are not limited to, gate driving circuits.

[0030] like Figure 2 As shown, Figure 2 This is a schematic diagram of a sub-pixel in a first type of display panel provided for an embodiment of the present application. The display panel includes a plurality of sub-pixels arranged in an array within a display area AA. Each sub-pixel includes a pixel electrode 1 and at least one transistor 2, with the pixel electrode 1 electrically connected to the transistor 2.

[0031] like Figure 2 As shown, the display panel includes multiple scan lines 3 and multiple data lines 4. The scan lines 3 extend along a first direction X and are arranged at intervals along a second direction Y. The data lines 4 extend along the second direction Y and are arranged at intervals along the first direction X. The orthographic projections of the scan lines 3 and data lines 4 on a reference plane intersect each other to define multiple sub-pixels. The reference plane is parallel to the light-emitting surface of the display panel.

[0032] The display area AA includes multiple opening areas AA1 and multiple device areas AA2. Each opening area AA1 and a corresponding device area AA2 are located within a corresponding sub-pixel. Pixel electrode 1 is disposed in the opening area AA1, and transistor 2 is disposed in the corresponding device area AA2. The gate of transistor 2 is electrically connected to scan line 3, the source of transistor 2 is electrically connected to data line 4, and the drain of transistor 2 is electrically connected to pixel electrode 1.

[0033] In the embodiments of this application, the first direction X is different from the second direction Y and is perpendicular to the thickness direction of the display panel. For example, the first direction X may be perpendicular to the second direction Y.

[0034] like Figure 2 As shown, the pixel electrode 1 includes a plurality of first branch electrodes 11 and two second branch electrodes 12. The plurality of first branch electrodes 11 are arranged sequentially at intervals along a first direction X, and the two second branch electrodes 12 are arranged at intervals along a second direction Y. The plurality of first branch electrodes 11 are connected in parallel between the two second branch electrodes 12 to form a pixel electrode 1.

[0035] In the embodiments of this application, in the first direction X, at least one structural parameter of the plurality of first branch electrodes 11 in the same pixel electrode 1 is different, and the structural parameter includes the distance between adjacent first branch electrodes 11 and the width of the first branch electrode 11.

[0036] It should be noted that at least one structural parameter of the multiple first branch electrodes 11 in the same pixel electrode 1 is different, which means that: the distance between the first branch electrode 11 and the adjacent first branch electrodes on both sides of the first direction X is not equal, and the width of two adjacent first branch electrodes 11 is equal; or, the distance between the first branch electrode 11 and the adjacent first branch electrodes on both sides of the first direction X is equal, and the width of two adjacent first branch electrodes 11 is not equal; or, the distance between the first branch electrode 11 and the adjacent first branch electrodes on both sides of the first direction X is not equal, and the width of two adjacent first branch electrodes 11 is not equal either.

[0037] In the embodiments of this application, by making at least one structural parameter different for multiple first branch electrodes in the same pixel electrode, including the distance between adjacent first branch electrodes and the width of the first branch electrodes, the electric field intensity within the pixel electrode can be differentially distributed. This allows the formation of multiple liquid crystal molecule regions with different rotation angles within the same opening region AA1. When light passes through the liquid crystal layer, the phase delay in different regions is different, causing the emitted light to diffuse, with some light being directed away from the side-viewing direction. This enhances the light intensity at the side-viewing position, compensating for the insufficient side-viewing brightness in traditional designs, thereby improving the viewing angle attenuation and increasing the viewing angle of the display panel.

[0038] In some embodiments, in the same pixel electrode 1, the distance d between adjacent first branch electrodes 11 gradually increases or gradually decreases in the first direction X.

[0039] like Figure 1 As shown, in the same pixel electrode 1, the distance d between adjacent first branch electrodes 11 gradually decreases in the first direction X. The difference in gap between adjacent first branch electrodes 11 results in a differentiated distribution of electric field intensity. Narrower gaps have stronger electric fields and larger rotation angles of liquid crystal molecules; wider gaps have weaker electric fields and smaller rotation angles. In this way, multiple liquid crystal molecule regions with different rotation angles can be formed within the opening region AA1 to improve the attenuation of viewing angle brightness and increase the viewing angle of the display panel.

[0040] In some embodiments, such as Figure 1 As shown, in the same pixel electrode 1, the absolute value of the difference between the distance between the first branch electrode 11 and the distance between the first branch electrode 11 and the two adjacent first branch electrodes 11 on both sides of the first direction X is greater than or equal to 0.1 micrometers and less than or equal to 0.8 micrometers. For example, the absolute value of the difference between the distance between the first branch electrode 11 and the distance between the two adjacent first branch electrodes 11 on both sides of the first direction X can be 0.1 micrometers, 0.3 micrometers, 0.45 micrometers, 0.5 micrometers, 0.7 micrometers, or 0.8 micrometers, etc.

[0041] It should be noted that if the absolute value of the difference between the first branch electrode 11 and the distance between the two adjacent first branch electrodes 11 on both sides of the first direction X is too small, the difference in electric field generated in different gap regions will be negligible and insufficient to drive the liquid crystal molecules to produce significantly different rotation angles. If the absolute value of the difference between the first branch electrode 11 and the distance between the two adjacent first branch electrodes 11 on both sides of the first direction X is too large, it will not only cause a huge difference in the electric field intensity in different regions within the pixel, resulting in uneven distribution of emitted light and bright spots or dark bands appearing at certain specific viewing angles, thus disrupting the smoothness of viewing angle changes, but it will also unnecessarily occupy space, thereby reducing the effective light-transmitting area and causing a decrease in front brightness, which is counterproductive.

[0042] This embodiment limits the absolute value of the difference between the first branch electrode 11 and the distance between the two adjacent first branch electrodes 11 on both sides in the first direction X to between 0.1 micrometers and 0.8 micrometers. This ensures that the emitted light is uniformly distributed and does not affect the brightness of the front side. The electric field difference generated in different gap areas is sufficient to drive the liquid crystal molecules to generate significantly different rotation angles. This can improve the viewing angle brightness decay and increase the viewing angle of the display panel.

[0043] In some embodiments, such as Figure 2 As shown, the distance d between adjacent first branch electrodes 11 is greater than or equal to 1.5 micrometers and less than or equal to 7 micrometers. For example, the distance d between adjacent first branch electrodes 11 can be 1.5 micrometers, 2 micrometers, 3 micrometers, 4 micrometers, 5 micrometers, 6 micrometers, or 7 micrometers, etc. The minimum distance between adjacent first branch electrodes 11 can be greater than or equal to 1.5 micrometers, and then gradually increase with equal or unequal differences based on 1.5 micrometers. The maximum distance between adjacent first branch electrodes 11 can be less than or equal to 7 micrometers, and then gradually decrease with equal or unequal differences based on 7 micrometers.

[0044] In some embodiments, within the same pixel electrode, the distance between adjacent first branch electrodes gradually increases or decreases in the first direction, and the widths of adjacent first branch electrodes 11 are equal. Thus, by making the distances between adjacent first branch electrodes within the same pixel electrode unequal, the attenuation of viewing angle brightness is improved, thereby increasing the viewing angle of the display panel.

[0045] In some embodiments, in the same pixel electrode 1, the distance between the first branch electrode 11 and the adjacent first branch electrodes 11 on both sides in the first direction X is equal, and the width of the first branch electrode 11 gradually increases or decreases in the first direction X.

[0046] In some embodiments, within the same pixel electrode 1, the absolute value of the difference in width between adjacent first branch electrodes 11 is greater than or equal to 0.1 micrometers and less than or equal to 0.5 micrometers. For example, the absolute value of the difference in width between adjacent first branch electrodes 11 can be 0.1 micrometers, 0.2 micrometers, 0.3 micrometers, 0.4 micrometers, or 0.5 micrometers, etc.

[0047] It should be noted that if the absolute value of the difference in width between adjacent first branch electrodes 11 is too small, the modulation effect on the electric field distribution is too weak, and the gradient change in the orientation of liquid crystal molecules is insufficient to produce an observable optical diffusion effect. If the absolute value of the difference in width between adjacent first branch electrodes 11 is too large, it will not only unnecessarily occupy too much area, directly reducing the aperture ratio of the entire pixel and causing a decrease in front brightness, but it will also cause the electric field characteristics in the same area to differ too much. At the junction of wide and narrow electrodes, the electric field distribution may change drastically, which can easily induce disordered arrangement of liquid crystal molecules, causing light leakage in the dark, reducing contrast, and producing bright bands or dispersion at certain specific viewing angles, thus destroying the uniformity of viewing angle changes and color consistency.

[0048] This embodiment limits the absolute value of the difference in width between adjacent first branch electrodes 11 to between 0.1 micrometers and 0.5 micrometers. This ensures that the width variation of the first branch electrode 11 can generate a continuous and smooth electric field gradient without affecting the aperture ratio and front brightness. This drives the liquid crystal molecules to form a gradient orientation, ensuring uniform distribution of emitted light. The electric field difference generated in different regions is sufficient to drive the liquid crystal molecules to generate significantly different rotation angles, thereby improving the viewing angle brightness decay and increasing the viewing angle of the display panel.

[0049] In some embodiments, in the same pixel electrode 1, the absolute value of the difference in width between adjacent first branch electrodes 11 is greater than or equal to 0.2 micrometers and less than or equal to 0.4 micrometers.

[0050] In some embodiments, the width of the first branch electrode 11 is greater than or equal to 1.5 micrometers and less than or equal to 4 micrometers. For example, the width of the first branch electrode 11 can be 1.5 micrometers, 2 micrometers, 2.5 micrometers, 3 micrometers, 3.5 micrometers, or 4 micrometers, etc. The minimum width of the first branch electrode 11 can be greater than or equal to 1.5 micrometers, and then gradually increase with equal or unequal differences based on 1.5 micrometers. The maximum width of the first branch electrode 11 can be less than or equal to 4 micrometers, and then gradually decrease with equal or unequal differences based on 4 micrometers.

[0051] In some embodiments, the distance between adjacent first branch electrodes 11 and the width of the first branch electrode 11 are different in the first direction. For example, in the same pixel electrode 1, the width of the first branch electrode 11 gradually increases or decreases in the first direction X, and the width of adjacent first branch electrodes 11 gradually increases or decreases in the first direction X.

[0052] In some embodiments, in the first direction X, the gradient trend of the distance d between adjacent first branch electrodes 11 in the same pixel electrode 1 is opposite to the gradient trend of the width w of the first branch electrode 11.

[0053] For example Figure 2 As shown, in the first direction X, the distance between adjacent first branch electrodes 11 in the same pixel electrode 1 gradually increases, and the width of the first branch electrode 11 gradually decreases; or, in the first direction X, the distance between adjacent first branch electrodes 11 in the same pixel electrode 1 gradually decreases, and the width of the first branch electrode 11 gradually increases.

[0054] Where the width of the first branch electrode 11 is relatively large, the edge electric field has a wide coverage area and tends to diffuse, resulting in a weaker overall electric field. By reducing the gap between adjacent first branch electrodes 11, the strong electric field at the gap can compensate for the weakened electric field caused by the widening of the first branch electrode 11. Conversely, where the width of the first branch electrode 11 is relatively small, the edge electric field is concentrated. In this case, a larger gap between the first branch electrodes can mitigate the excessively strong edge electric field. By making the gradient trend of the distance between adjacent first branch electrodes opposite to that of the width of the first branch electrodes, the electric field within the entire sub-pixel can be smoothly and continuously differentiated, avoiding extreme cases of excessively strong or weak local electric fields. This ensures that liquid crystal molecules are effectively and reasonably driven in all areas within the sub-pixel, resulting in a more uniform response. Therefore, while ensuring uniform display brightness, the viewing angle of the display panel can be improved.

[0055] In some embodiments, the ratio of the width of the first branch electrode 11 to the distance between adjacent first branch electrodes 11 is greater than or equal to 0.2 and less than or equal to 2. For example, the ratio of the width w of the first branch electrode 11 to the distance between adjacent first branch electrodes 11 can be 0.2, 0.4, 0.6, 0.8, 1, 1.2, 1.4, 1.6, 1.8, or 2, etc.

[0056] It should be noted that if the ratio of the width of the first branch electrode 11 to the distance between adjacent first branch electrodes 11 is too small, it means that the width of the first branch electrode is too small or the distance between the first branch electrodes is too large. This will affect the aperture ratio and reduce the brightness of the front side. If the ratio of the width of the first branch electrode 11 to the distance between adjacent first branch electrodes 11 is too large, it means that the width of the first branch electrode is too large or the distance between the first branch electrodes is too small. This will cause the electric field distribution to be highly concentrated above the narrow gap, forming an extremely strong and highly non-uniform lateral electric field. This can easily induce the liquid crystal molecules to produce incorrect alignment. In the dark state, these defective areas will allow light to leak prematurely, resulting in increased brightness in the dark state and severely reducing the contrast.

[0057] This embodiment limits the ratio of the width of the first branch electrode 11 to the distance between adjacent first branch electrodes 11 to between 0.2 and 2. This ensures that the pixel electrode can effectively conduct signals and generate an electric field of moderate intensity and controllable distribution without affecting the aperture ratio and actual brightness. This reliably and uniformly drives the liquid crystal molecules, thereby improving the viewing angle of the display panel while ensuring the uniformity of display brightness.

[0058] In some embodiments, in one of the first direction X and the second direction Y, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are mirror-symmetrical; in the other of the first direction X and the second direction Y, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are non-mirror-symmetrical. This allows for improved viewing angle of the display panel while reducing brightness attenuation at the first or second viewing direction, thus reducing the brightness difference in the density at the first or second viewing direction.

[0059] In some embodiments, in two adjacent pixel electrodes 1 along the first direction X, the gradient trend of at least one structural parameter in one pixel electrode 1 along the first direction X is opposite to the gradient trend of the corresponding structural parameter in the other pixel electrode 1. Similarly, in two adjacent pixel electrodes 1 along the second direction Y, the gradient trend of at least one structural parameter in one pixel electrode 1 along the first direction X is opposite to the gradient trend of the corresponding structural parameter in the other pixel electrode 1. This can increase the diversity of liquid crystal molecule rotation within the region where multiple adjacent pixel electrodes are located, thereby improving viewing angle brightness decay and increasing the viewing angle of the display panel.

[0060] In some embodiments, such as Figure 2 As shown, the opening region AA1 includes a first sub-region AA11 and a second sub-region AA12 arranged along the second direction Y. The first sub-region AA11 and the second sub-region AA12 can be regarded as the upper domain and lower domain of the sub-pixel, respectively. The orthographic projection of the part of the pixel electrode 1 located in the first sub-region AA11 on the reference plane is non-mirror symmetrical with the orthographic projection of the part of the pixel electrode 1 located in the second sub-region AA12 on the reference plane.

[0061] In some embodiments, such as Figure 2 As shown, the first branch electrode 11 includes a first sub-part 111 and a second sub-part 112. The first sub-part 111 is located in the first sub-region AA11, and the second sub-part 112 is located in the second sub-region AA12. The first sub-part 111 is connected to the second sub-part 112. The extension direction of the first sub-part 111 is different from the extension direction of the second sub-part 112. The extension direction of the first sub-part 111 has a first angle with the first direction X, and the extension direction of the second sub-part 112 has a second angle with the first direction X. The first angle and the second angle are the same.

[0062] In some embodiments, such as Figure 2 As shown, in the same first branch electrode 11, the width of the first sub-part 111 is equal to the width of the second sub-part 112, and the distance between the first sub-part 111 and the adjacent first sub-part 111 is equal to the distance between the second sub-part 112 and the adjacent second sub-part 112.

[0063] In some embodiments, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the sub-pixel arrangement in a first type of display panel provided for an embodiment of this application. The display panel includes a plurality of pixel electrodes 1, each including adjacent first pixel electrode 101, second pixel electrode 102, third pixel electrode 103, and fourth pixel electrode 104. In two adjacent pixel electrodes along a first direction X, the distance between adjacent first branch electrodes 11 in the first pixel electrode 101 gradually decreases along the first direction X, while the width of the first branch electrode 11 gradually increases. Similarly, in the second pixel electrode 102, the distance between adjacent first branch electrodes 11 gradually increases along the first direction X, while the width of the first branch electrode 11 gradually decreases. In two adjacent pixel electrodes 1 along a second direction Y, the distance between adjacent first branch electrodes 11 in the first pixel electrode 101 gradually decreases along the first direction X, while the width of the first branch electrode 11 gradually increases. Similarly, in the third pixel electrode 103, the distance between adjacent first branch electrodes 11 gradually increases along the first direction X, while the width of the first branch electrode 11 gradually decreases.

[0064] In some embodiments, in the first direction X, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are mirror-symmetrical, and in the other of the second directions Y, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are non-mirror-symmetrical.

[0065] like Figure 3 As shown, the orthographic projection of the first pixel electrode 101 onto the reference plane is mirror-symmetrical to the orthographic projection of the second pixel electrode 102 onto the reference plane, and the orthographic projections of the third pixel electrode 103 and the fourth pixel electrode 104 onto the reference plane are mirror-symmetrical. The orthographic projection of the first pixel electrode 101 onto the reference plane is not mirror-symmetrical to the orthographic projection of the third pixel electrode 103 onto the reference plane, and the orthographic projection of the second pixel electrode 102 onto the reference plane is not mirror-symmetrical to the orthographic projection of the fourth pixel electrode 104 onto the reference plane. In this way, while increasing the diversity of liquid crystal molecule rotation within the regions of adjacent pixel electrodes, the brightness attenuation at left and right viewing angles can be improved, thereby increasing the viewing angle of the display panel.

[0066] In some embodiments, such as Figure 3As shown, four adjacent pixel electrodes in the first direction X and the second direction Y constitute a pixel electrode unit 105. Within the same pixel electrode unit 105, in the first direction X, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are mirror-symmetrical, while in the other direction Y, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are non-mirror-symmetrical.

[0067] In some embodiments, such as Figure 4 As shown, Figure 4 A schematic diagram of the sub-pixel arrangement in a second type of display panel provided for embodiments of this application, the structure of which is similar to... Figures 1 to 3 The structures of the display panels shown are roughly the same, the difference being that: in two adjacent pixel electrode units 105, the orthographic projection of one pixel electrode unit 105 on the reference plane is not mirror-symmetrical with the orthographic projection of the other pixel electrode unit 105 on the reference plane. This can further improve the diversity of liquid crystal molecule rotation in the area where multiple adjacent pixel electrodes are located, while improving the brightness attenuation at left and right viewing angles, thereby improving the viewing angle of the display panel.

[0068] like Figure 5 As shown, Figure 5 A schematic diagram of the sub-pixel arrangement in a third type of display panel provided for embodiments of this application, the structure of which is similar to... Figures 1 to 3 The display panels shown have roughly the same structure, the difference being that the extension direction of the first sub-part 111 has a first angle a1 with the first direction X, and the extension direction of the second sub-part 112 has a second angle a2 with the first direction X. The first angle a1 and the second angle a2 are different; the first angle a1 can be greater than the second angle a2, or the first angle a1 can be smaller than the second angle a2. This further increases the diversity of liquid crystal molecule rotation within the same opening area AA1, thereby further improving the brightness attenuation at viewing angles and thus further improving the viewing angle of the display panel.

[0069] In some embodiments, the absolute value of the difference between the first included angle a1 and the second included angle a2 is greater than or equal to 5 degrees and less than or equal to 10 degrees. For example, the absolute value of the difference between the first included angle a1 and the second included angle a2 can be 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, or 10 degrees, etc.

[0070] It should be noted that if the absolute value of the difference between the first included angle a1 and the second included angle a2 is too small, it cannot effectively increase the diversity of liquid crystal molecule rotation within the opening region AA1, and the improvement effect on viewing angle brightness attenuation is not significant. If the absolute value of the difference between the first included angle a1 and the second included angle a2 is too large, the direction of the edge of the first branch electrode becomes mismatched with the desired liquid crystal tilting direction, resulting in a reduction in the effective driving component of the electric field. This means that a higher voltage is required to achieve the same rotation angle, or the transmittance will eventually decrease, sacrificing front brightness and leading to a reduction in luminous efficiency. This embodiment, by limiting the absolute value of the difference between the first included angle a1 and the second included angle a2 to between 5 and 10 degrees, can increase the diversity of liquid crystal molecule rotation and improve the viewing angle brightness attenuation while ensuring front brightness and luminous efficiency, thereby further improving the viewing angle of the display panel.

[0071] In some embodiments, such as Figure 5 As shown, in the first direction X, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are non-mirror symmetrical, while in one of the second directions Y, the orthographic projections of two adjacent pixel electrodes 1 onto the reference plane are mirror symmetrical. This can improve the diversity of liquid crystal molecule rotation in the region where multiple adjacent pixel electrodes are located, while also improving the brightness attenuation at different viewing angles, thereby improving the viewing angle of the display panel.

[0072] Based on the display panel provided in the above embodiments of this application, embodiments of this application also provide a display device, such as... Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. The display device 1000 includes a display panel 100 and a housing 200, with the display panel 100 disposed on the housing 200. The display panel 100 can be replaced with any of the display panels provided in the above embodiments, and can achieve the same technical effects as the display panels provided in the above embodiments, which will not be elaborated here.

[0073] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display panel, which includes a plurality of pixel electrodes. The pixel electrodes include a plurality of first branch electrodes arranged sequentially at intervals along a first direction. By making at least one structural parameter of the plurality of first branch electrodes in the same pixel electrode different, the structural parameters include the distance between adjacent first branch electrodes and the width of the first branch electrodes, the diversity of the rotation angle of liquid crystal molecules can be increased, so as to diffuse the emitted light of the display panel and make a part of the light emitted in a direction deviating from the side view position of the display panel, thereby improving the brightness at the side view position, thereby improving the brightness attenuation of the viewing angle and improving the viewing angle of the display panel.

[0074] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0075] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0076] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0077] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, It includes multiple pixel electrodes, wherein the pixel electrodes include multiple first branch electrodes arranged at intervals along a first direction; In the first direction, at least one structural parameter of the plurality of first branch electrodes in the same pixel electrode is different, and the structural parameter includes the distance between adjacent first branch electrodes and the width of the first branch electrode.

2. The display panel as described in claim 1, characterized in that, In the same pixel electrode, the distance between adjacent first branch electrodes gradually increases or gradually decreases in the first direction.

3. The display panel as described in claim 2, characterized in that, In the same pixel electrode, the absolute value of the difference between the distance between the first branch electrode and the distance between the first branch electrode and the adjacent first branch electrodes on both sides in the first direction is greater than or equal to 0.1 micrometers and less than or equal to 0.8 micrometers.

4. The display panel as described in claim 1, characterized in that, In the same pixel electrode, the width of the first branch electrode gradually increases or gradually decreases in the first direction.

5. The display panel as described in claim 4, characterized in that, In the same pixel electrode, the absolute value of the difference in width between adjacent first branch electrodes is greater than or equal to 0.1 micrometers and less than or equal to 0.5 micrometers.

6. The display panel as described in claim 1, characterized in that, In the first direction, the gradient trend of the distance between adjacent first branch electrodes in the same pixel electrode is opposite to the gradient trend of the width of the first branch electrode.

7. The display panel as described in claim 1, characterized in that, The ratio of the width of the first branch electrode to the distance between adjacent first branch electrodes is greater than or equal to 0.2 and less than or equal to 2.

8. The display panel as described in claim 1, characterized in that, In one of the first direction and the second direction, the orthographic projections of two adjacent pixel electrodes on the reference plane are mirror-symmetrical; in the other of the first direction and the second direction, the orthographic projections of two adjacent pixel electrodes on the reference plane are non-mirror-symmetrical, the reference plane is parallel to the light-emitting surface of the display panel, the first direction is different from the second direction and is perpendicular to the thickness direction of the display panel.

9. The display panel as claimed in claim 1, characterized in that, In two adjacent pixel electrodes in the first direction, the gradient trend of at least one structural parameter in one pixel electrode in the first direction is opposite to the gradient trend of the corresponding structural parameter in the other pixel electrode. And / or, in two adjacent pixel electrodes in the second direction, the gradient trend of at least one of the structural parameters in one pixel electrode in the first direction is opposite to the gradient trend of the corresponding structural parameter in the other pixel electrode, wherein the first direction is different from the second direction and is perpendicular to the thickness direction of the display panel.

10. The display panel as claimed in claim 9, characterized in that, In the first direction, the orthographic projections of two adjacent pixel electrodes onto the reference plane are mirror-symmetrical. In the second direction, the orthographic projections of two adjacent pixel electrodes onto the reference plane are non-mirror symmetrical, and the reference plane is parallel to the light-emitting surface of the display panel.

11. The display panel as claimed in claim 1, characterized in that, The display panel has a display area, which includes multiple opening areas. Each pixel electrode is disposed in a corresponding opening area. The opening area includes a first sub-area and a second sub-area arranged along a second direction. The first direction is different from the second direction and is perpendicular to the thickness direction of the display panel. The orthographic projection of the portion of the pixel electrode located in the first sub-region onto the reference plane is non-mirror symmetrical with the orthographic projection of the portion of the pixel electrode located in the second sub-region onto the reference plane, and the reference plane is parallel to the light-emitting surface of the display panel.

12. The display panel as claimed in claim 11, characterized in that, The first branch electrode includes: The first sub-section, located in the first sub-region; and The second sub-part is located in the second sub-region and is connected to the first sub-part, wherein the extension direction of the first sub-part is different from the extension direction of the second sub-part; Wherein, the extension direction of the first sub-part has a first angle with the first direction, and the extension direction of the second sub-part has a second angle with the first direction, and the first angle and the second angle are different.

13. The display panel as claimed in claim 12, characterized in that, The absolute value of the difference between the first included angle and the second included angle is greater than or equal to 5 degrees and less than or equal to 10 degrees.

14. The display panel as claimed in claim 11, characterized in that, In the first direction, the orthographic projections of two adjacent pixel electrodes onto the reference plane are non-mirror symmetrical; In one of the second directions, the orthographic projections of two adjacent pixel electrodes onto the reference plane are mirror-symmetrical.

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