Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate and a pixel definition layer which are stacked, a plurality of pixel units are arranged on the pixel definition layer in an array; each pixel unit comprises a white sub-pixel, and a first sub-pixel, a second sub-pixel and a third sub-pixel which are used for adjusting the color temperature of the white sub-pixel; the first sub-pixel, the second sub-pixel and the third sub-pixel encircle to form an annular complementary color structure and surround the white sub-pixel, the first sub-pixel and the second sub-pixel are symmetrically distributed and partially adjacent, the third sub-pixel is adjacent to the first sub-pixel and the second sub-pixel, the white sub-pixel sinks towards the third sub-pixel and forms a compensation opening, and the compensation opening is formed by the first sub-pixel, the second sub-pixel and the third sub-pixel. Part of the third sub-pixel is located in the compensation opening and matched with the compensation opening. According to the display panel, the occurrence probability of display defects such as color cast, sawteeth and uneven brightness can be reduced, and the color accuracy and visual comfort of the display panel are improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Some display panels use a WRGB (White-Red-Green-Blue) pixel unit structure composed of four sub-pixels as the light-emitting structure. The W sub-pixel serves as the primary light source, while the R, G, and B sub-pixels serve as complementary light sources. By adjusting the intensity ratio between the RG sub-pixels or the RB sub-pixels, color difference and color temperature can be controlled, thereby improving the display effect and enhancing eye protection. However, due to the limitations of the sub-pixel arrangement and specifications, display panels with WRGB pixel units may experience jagged image edges during display, which not only affects display clarity but may also cause image distortion, thereby affecting the display panel quality and the user experience. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a display panel and a display device to solve some or all of the technical problems mentioned above.

[0004] In a first aspect of the present application, a display panel is provided, comprising: It includes a stacked base substrate and a pixel definition layer; The pixel definition layer array is arranged with a plurality of pixel units; each of the pixel units includes a white sub-pixel, and a first sub-pixel, a second sub-pixel, and a third sub-pixel for adjusting the color temperature of the white sub-pixel; The first sub-pixel, the second sub-pixel and the third sub-pixel together form a ring-shaped complementary color structure and surround the white sub-pixel. The first sub-pixel and the second sub-pixel are symmetrically distributed and partially adjacent to each other. The third sub-pixel is adjacent to the first sub-pixel and the second sub-pixel respectively. The white sub-pixel is recessed toward the third sub-pixel to form a compensation opening. Part of the third sub-pixel is located within the compensation opening and matches the compensation opening.

[0005] In a second aspect of the present application, a display device is provided, comprising the display panel as described in the first aspect.

[0006] As can be seen from the above description, the display panel and display device provided by the present application form an annular complementary color structure by enclosing the first sub-pixel, the second sub-pixel and the third sub-pixel, and use the annular complementary color structure to complement the white sub-pixel surrounding it, thereby improving the color temperature adjustment accuracy and complementary color uniformity of the pixel unit; in addition, the white sub-pixel has a compensation opening that is locally adapted to the third sub-pixel, which improves the complementary color performance of the annular complementary color structure for the white sub-pixel, optimizes the smoothness of the edge transition of the pixel unit, and is conducive to suppressing display defects such as color cast, jaggedness and uneven brightness, thereby improving the color accuracy and visual comfort of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0008] Figure 1 Schematic diagram of the arrangement of pixel units in a display panel according to an embodiment of the present application; Figure 2 Schematic diagram of the first pixel unit in an embodiment of the present application; Figure 3 This is a schematic diagram of the second pixel unit in the embodiment of the present application; Figure 4 This is a schematic diagram of a third type of pixel unit in an embodiment of the present application; Figure 5 This is a schematic diagram of the distribution of the first power supply line and the second power supply line in an embodiment of the present application; Figure 6 Schematic diagram of the wiring of each pixel unit in the embodiment of the present application; Figure 7 A cross-sectional view of a display panel in an embodiment of the present application; Figure 8 is a schematic diagram of a driving circuit for each sub-pixel in an embodiment of the present application; Figure 9 A comparative schematic diagram of the embodiments of the present application. DETAILED DESCRIPTION

[0009] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0010] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0011] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0012] In display panel technology, some display panels use pixel units composed of WRGB sub-pixels as their light-emitting structure. During the display process, the W sub-pixel serves as the display panel's primary light source, while the R, G, and B sub-pixels serve as complementary color light sources. By adjusting the intensity ratio between the R and G sub-pixels, or between the R and B sub-pixels, color difference correction and color temperature control can be achieved, improving color reproduction accuracy and enhancing the display panel's eye protection function. However, due to the limitations of the sub-pixel arrangement and specifications, display panels with a WRGB light-emitting structure are prone to image edge jaggedness during display, especially in large-size OLED (Organic Electroluminescence Display) products. For example, when displaying black and white text, due to the limitations of the pixel unit size, the color shift around the pixel unit is obvious, resulting in an uneven edge transition, which reduces the visual quality of the display panel. Although the aliasing phenomenon can be alleviated through relevant algorithm rendering (such as super-sampling anti-aliasing, multi-sampling anti-aliasing, and temporal anti-aliasing algorithms), the ability to improve the smoothing of pixel unit edges is limited. For example, improper color compensation of pixel units during the display process will cause "color fringing" problems around the image, affecting display clarity and even causing image distortion, reducing the quality of the display panel and user experience.

[0013] The first aspect of the present application provides a display panel, Figures 1-9 The content shown provides a detailed description of the display panel.

[0014] A display panel includes a stacked base substrate 1 and a pixel definition layer 2; the pixel definition layer 2 is arrayed with a plurality of pixel units 3; each pixel unit 3 includes a white sub-pixel 301, and a first sub-pixel 302, a second sub-pixel 303, and a third sub-pixel 304 for adjusting the color temperature of the white sub-pixel 301; the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 together form an annular complementary color structure and surround the white sub-pixel 301, the first sub-pixel 302 and the second sub-pixel 303 are symmetrically distributed and partially adjacent, the third sub-pixel 304 is adjacent to the first sub-pixel 302 and the second sub-pixel 303, respectively, the white sub-pixel 301 is recessed toward the third sub-pixel 304 and forms a compensation opening 3011, and a portion of the third sub-pixel 304 is located within the compensation opening 3011 and adapted to the compensation opening 3011.

[0015] Specifically, if Figure 7 As shown, the display panel includes a stacked base substrate 1 and a pixel definition layer 2, wherein the base substrate 1 can be used to support and protect the film structure and electronic components in the display panel, and can be formed of materials such as polyimide and polyamide; a plurality of pixel openings are arrayed on the pixel definition layer 2, which can be used to accommodate pixel units 3, to block adjacent pixel units 3, reduce the degree of crosstalk between adjacent pixel units 3, and ensure that the display panel achieves uniform light output.

[0016] Specifically, if Figure 1 and Figure 7 As shown, the pixel definition layer 2 is arrayed with a plurality of pixel units 3, which constitute the light emitting source of the display panel. More specifically, each pixel unit 3 includes a white sub-pixel 301, and a first sub-pixel 302, a second sub-pixel 303, and a third sub-pixel 304 for adjusting the color temperature of the white sub-pixel 301. The display panel also includes a color filter layer disposed on the side of the pixel unit 3 away from the base substrate 1. The different color filter blocks 16 constituting the color filter layer correspond to the white sub-pixels 301. The white sub-pixels 301 can emit light toward the light emitting side of the display panel. After passing through the color filter layer, the light is converted into the color corresponding to the color filter block 16. Because the color filter layer absorbs and filters the light passing through it, the light intensity of the emitted light becomes weaker. Therefore, a first sub-pixel 302, a second sub-pixel 303, and a third sub-pixel 304 of different colors are provided in the pixel unit 3, which can serve as complementary color pixels of the white sub-pixel 301. For example, the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 can be a green sub-pixel, a red sub-pixel, and a blue sub-pixel, respectively, which can be used to compensate for the light intensity of the display panel and also to regulate the color temperature and color cast of the pixel unit 3.

[0017] It should be noted that the color temperature is used to characterize the amount of color components contained in the light emitted by the display panel, and will not be further described here.

[0018] Further, if Figure 1-Figure 4 As shown, for any pixel unit 3, the first sub-pixel 302, the second sub-pixel 303 and the third sub-pixel 304 are surrounded by a ring-shaped complementary color structure and are distributed around the white sub-pixel 301, so that the ring-shaped complementary color structure emits light in the peripheral area of ​​the white sub-pixel 301; by making the ring-shaped complementary color structure surround the white sub-pixel 301, on the one hand, the light output intensity of the entire pixel unit 3 can be compensated, and on the other hand, the edge of the white sub-pixel 301 can be complementary, which helps to reduce the degree of color deviation and maintain the stability of the display color temperature.

[0019] Furthermore, if Figure 1-Figure 4 As shown, the first sub-pixel 302 and the second sub-pixel 303 are symmetrically distributed relative to the white sub-pixel 301 and are partially adjacent to each other, so that the first sub-pixel 302 and the second sub-pixel 303 are compactly arranged in the edge area of ​​the white sub-pixel 301. For example, when the first sub-pixel 302 is a green sub-pixel and the second sub-pixel 303 is a red sub-pixel, the color complementation effect on the white sub-pixel 301 can be optimized by adjusting the intensity ratio between the adjacent red and green sub-pixels, thereby improving the smoothness of the color complementation transition of the white sub-pixel 301. At the same time, the symmetrical layout of the first sub-pixel 302 and the second sub-pixel 303 can alleviate the problem of edge sharpening of the pixel unit 3, effectively reduce the degree of color shift, and ensure the uniformity of the color around the pixel unit 3 after the color complementation.

[0020] In addition, if Figure 1-Figure 4As shown, the third sub-pixel 304 is disposed adjacent to a portion of the edge of the first sub-pixel 302 and a portion of the edge of the second sub-pixel 303 . For example, taking the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 as the green sub-pixel, the red sub-pixel, and the blue sub-pixel respectively, the red sub-pixel and the blue sub-pixel are arranged adjacent to each other, and the intensity ratio between the red sub-pixel and the blue sub-pixel is adjusted to optimize the complementary color effect on the white sub-pixel 301, thereby improving the smoothness of the complementary color transition of the white sub-pixel 301; further, the white sub-pixel 301 is recessed toward the third sub-pixel 304 to form a compensation opening 3011, and a partial area of ​​the third sub-pixel 304 is embedded in the compensation opening 3011 to match its contour, so that the opening area of ​​the white sub-pixel 301 is reduced by the compensation opening 3011 and the overall contour of the white sub-pixel 301 is changed, thereby reducing the area of ​​the region where the white sub-pixel 301 is difficult to achieve a good complementary color effect, so that the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 can achieve regional compensation for the white sub-pixel 301, which helps to improve the complementary color effect. Furthermore, when the third sub-pixel 304 is a blue sub-pixel, the portion thereof embedded in the compensation opening 3011 can increase the adjacent area between the third sub-pixel 304 and the white sub-pixel 301, thereby improving the complementary color effect of the third sub-pixel 304 on the white sub-pixel 301, ensuring the complementary color uniformity and viewing angle consistency of each sub-pixel to the white sub-pixel 301, thereby improving the display uniformity and optimizing the brightness and energy efficiency performance of the display panel.

[0021] It should be noted that the light emitting device of each sub-pixel in the pixel unit 3 is connected to a pixel driving circuit, and the pixel driving circuit drives the light emitting layer to emit light. Taking the green sub-pixel as an example, the green sub-pixel can be driven by Figure 8 The pixel driving circuit shown is driven, as shown in FIG. Figure 8 As shown, VDD is the power supply voltage, which provides a forward bias for the circuit; VSS is the ground voltage, which is used as a reference point or negative polarity power supply for the driving circuit; Data is the data signal input terminal, which is used to transmit image data information; G1 and G2 are the gate 141 control signal segments, which can control the switching states of the T2 and T3 transistors respectively; Sense_El represents the sensing output terminal, which is used to read the current or voltage value of the pixel unit 3; Cst is the storage capacitor, which is used to keep the voltage of the pixel unit 3 stable; T1, T2, and T3 are all transistors, among which T1 is the main driving transistor, T2 and T3 are auxiliary control transistors, and G, S, and D are different nodes of the pixel driving circuit respectively.

[0022] The pixel driving circuit realizes image display through the coordinated work of control signals and capacitors. Specifically, first, in the data writing stage, the gate 141 control signal G1 is high, at this time T2 is turned on, allowing the image data signal of Data to charge Cst through T2 and set the gate 141 voltage of T1; when entering the display stage, as G1 turns to a low level, T2 is turned off, but Cst keeps the voltage of T1 gate 141 unchanged, so that T1 adjusts the current flowing through the pixel unit 3 according to this voltage to display the image. Finally, in the sensing stage where the pixel state needs to be read, the transistor T3 is turned on by setting the gate 141 control signal G2 to a high level, thereby detecting the current or voltage value of the T1 drain through the Sense_El port to determine the display state of the pixel unit 3. Cst can be used to ensure the stability of the pixel voltage to ensure that the display panel maintains a clear and accurate image display.

[0023] Furthermore, the color filter layer also includes a grid-shaped light-shielding layer 17; Figure 8 As shown, the light shielding layer 17 can be disposed in the peripheral area of ​​the color filter block 16 and used to absorb stray light scattered from the peripheral area.

[0024] like Figure 1-Figure 4 As shown, in order to facilitate the description of the arrangement and specific shape of each sub-pixel in the pixel unit 3, the first direction can be defined as the X direction, and the second direction can be defined as the Y direction. The first direction is perpendicular to the second direction, that is, the X direction is perpendicular to the Y direction.

[0025] In some embodiments, the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 each include a first complementary color portion 310 and a second complementary color portion 320 connected to each other; Figure 2-Figure 4 As shown, the first complementary color portion 310 and the second complementary color portion 320 of the first sub-pixel 302, the first complementary color of the third complementary color portion, and the second complementary color portion 320 and the first complementary color portion 310 of the second sub-pixel 303 are adjacent to each other in sequence and form an annular complementary color structure surrounding the white sub-pixel 301, so as to provide complementary color for the white sub-pixel 301 within the annular complementary color structure. The second complementary color portion 320 of the third sub-pixel 304 extends into the compensation opening 3011 and adapts to the compensation opening 3011, so that the third sub-pixel 304 is respectively arranged adjacent to the first sub-pixel 302 and the second sub-pixel 303, thereby improving the complementary color effect of the third sub-pixel 304 on the white sub-pixel 301, improving the uniformity of light emission of the pixel unit 3, and facilitating control of the energy efficiency required for lighting the pixel unit 3.

[0026] In some embodiments, as Figure 1-Figure 4As shown, for the first sub-pixel 302, the second sub-pixel 303 and the third sub-pixel 304, the first complementary color parts 310 of the three are all strip-shaped structures; wherein, the end of the first complementary color part 310 of the first sub-pixel 302 and the end of the first complementary color part 310 of the second sub-pixel 303 are adjacent to each other, and the first complementary color part 310 of the first sub-pixel 302, the first complementary color part 310 of the second sub-pixel 303 and the first complementary color part 310 of the third sub-pixel 304 extend along the first direction, so that the first complementary color part 310 of the first sub-pixel 302 and the second The second complementary color portion 320 of the sub-pixel 303 is adjacent to one side of the white sub-pixel 301 along the first direction. The first complementary color portion 310 of the first sub-pixel 302 and the first complementary color portion 310 of the second sub-pixel 303 are used to complement the adjacent portion of the white sub-pixel 301. When the first sub-pixel 302 and the second sub-pixel 303 are green and red sub-pixels, respectively, the complementary color effect between the white sub-pixel 301 and the adjacent area thereof can be improved by adjusting the ratio of the luminous intensity of the first sub-pixel 302 and the second sub-pixel 303.

[0027] Further, if Figure 1-Figure 4 As shown, in the second direction, the positions of the first complementary color portion 310 of the first sub-pixel 302 and the first complementary color portion 310 of the second sub-pixel 303 and the position of the third complementary color portion are located on opposite sides of the white sub-pixel 301, respectively. This allows the complementary color structure formed by the first complementary color portion 310 of the first sub-pixel 302 and the second complementary color portion 320 of the second sub-pixel 303 to be separated from the first complementary color portion 310 of the third complementary color portion. In addition, by adjusting the intensity ratio of the first complementary color portion 310 of the first sub-pixel 302 and the second complementary color portion 320 of the second sub-pixel 303 in the second direction, one side of the white sub-pixel 301 can be complementary, and by adjusting the intensity ratio of the first complementary color portion 310 of the blue sub-pixel, the other side of the white sub-pixel 301 can be complementary, thereby improving the complementary color effect of the single color of the white sub-pixel 301.

[0028] In some embodiments, as Figure 1-Figure 4As shown, in a first direction, the first sub-pixel 302 and the second sub-pixel 303 are symmetrically distributed relative to the white sub-pixel 301. The second complementary color portion 320 of the first sub-pixel 302 and the second complementary color portion 320 of the second sub-pixel 303 are located on opposite sides of the white sub-pixel 301, so that the second complementary color portions 320 of the two sub-pixels are spaced apart from each other. By adjusting the intensity ratio of the second complementary color portion 320 of the green sub-pixel, one side of the white sub-pixel 301 can be complementary, and by adjusting the intensity ratio of the second complementary color portion 320 of the red sub-pixel, one side of the white sub-pixel 301 can be complementary, thereby improving the complementary color effect of the single color of the white sub-pixel 301. In addition, the second complementary color portion 320 of the first sub-pixel 302 and the second complementary color portion 320 of the second sub-pixel 303 are respectively adjacent to the first complementary color portion 310 of the third sub-pixel 304, which ensures the continuity of the complementary color light source around the white sub-pixel 301 and the complementary color effect.

[0029] Further, if Figure 1-Figure 4 As shown, the second complementary color portion 320 of the third sub-pixel 304 protrudes into the compensation opening 3011 along the second direction, so as to optimize the outline of the white sub-pixel 301 through the compensation opening 3011, expand the adjacent area between the white sub-pixel 301 and the second complementary color portion 320 of the third sub-pixel 304, improve the smoothness of the complementary color transition of the white sub-pixel 301, and enhance the complementary color performance of the third sub-pixel 304; and the compensation opening 3011 can reduce the opening area of ​​the white sub-pixel 301 and be supplemented by the second complementary color portion 320 of the third sub-pixel 304, so as to optimize the outline of the white sub-pixel 301 through the third sub-pixel 304, and enhance the coordinated complementary color effect of the symmetrically distributed first sub-pixel 302 and second sub-pixel 303 on the white sub-pixel 301.

[0030] In some embodiments, the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 are respectively a green sub-pixel, a red sub-pixel, and a blue sub-pixel. Figure 1 and Figure 2 As shown, when the length of the first complementary color portion 310 of the third sub-pixel 304 in the first direction is greater than or equal to the length of the white sub-pixel 301, it indicates that the adjacent area between the first complementary color portion 310 of the third sub-pixel 304 and the white sub-pixel 301 is larger, and therefore the third sub-pixel 304 has a better complementary color effect on the white sub-pixel 301, thereby effectively improving the ability to control the color temperature and color deviation of the pixel unit 3.

[0031] Furthermore, because the first complementary color portion 310 of the third sub-pixel 304 has a relatively good ability to control the color temperature of the white sub-pixel 301, the area of ​​the second complementary color portion 320 of the third sub-pixel 304 can be made smaller than the first complementary color portion 310 of the third sub-pixel 304, thereby reducing the encroachment of the third sub-pixel 304 on the opening area of ​​the white sub-pixel 301 and ensuring light output intensity. In this case, the compensation opening 3011 can be positioned close to either the second complementary color portion 320 of the first sub-pixel 302 or the second complementary color portion 320 of the second sub-pixel 303. Even if the second complementary color portion 320 of the third sub-pixel 304 is close to any sub-pixel, the adjacent area with the other sub-pixels is expanded. This allows precise control of the local color temperature of the white sub-pixel 301 by adjusting the intensity ratio between the sub-pixels. This helps suppress sudden brightness changes at the edge of the white sub-pixel 301, resulting in a smoother complementary color transition and reduced color discontinuity.

[0032] For example, Figure 1-Figure 2 As shown, when the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 are green, red, and blue sub-pixels, respectively, the mixing of light between the green sub-pixel and the blue sub-pixel can cover a wider color gamut compensation range, thereby neutralizing the yellow or magenta color cast of the white sub-pixel 301. In addition, since the human eye is most sensitive to green light and secondly to blue light, the blue sub-pixel can be preferentially set close to the green sub-pixel, expanding the adjacent area between the two and improving the smoothness of the edge transition, thereby enhancing the display effect of the display panel and improving the viewing experience.

[0033] In some embodiments, in the first direction, the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 are respectively a green sub-pixel, a red sub-pixel, and a blue sub-pixel. Figure 3 and Figure 4 As shown, when the length of the first complementary color portion 310 of the third sub-pixel 304 is less than the length of the white sub-pixel 301, the area of ​​the second complementary color portion 320 of the third sub-pixel 304 can be made greater than or equal to the area of ​​the first complementary color portion 310 of the third sub-pixel 304, thereby increasing the adjacent area between the third sub-pixel 304 and the white sub-pixel 301, achieving more accurate color temperature compensation and helping to adjust the color cast problem when the pixel unit 3 emits light. In addition, when the third sub-pixel 304 is a blue sub-pixel, the blue light it emits has a short wavelength and is easily scattered, which can optimize the edge light intensity distribution of its second complementary color portion 320, reducing the blue fringing phenomenon and improving the uniformity of light mixing, thereby improving the color performance and visual comfort of the display panel.

[0034] In addition, in addition to ensuring that the area of ​​the second complementary color portion 320 of the third sub-pixel 304 is greater than or equal to the area of ​​the first complementary color portion 310 of the third sub-pixel 304, the portion of the second complementary color portion 320 of the third sub-pixel 304 within the compensation opening 3011 can also be positioned close to one of the second complementary color portion 320 of the first sub-pixel 302 and the second complementary color portion 320 of the second sub-pixel 303. This can expand the adjacent area between the third sub-pixel 304 and the other sub-pixels, help achieve precise control of the local color temperature of the white sub-pixel 301 by adjusting the intensity ratio between the third sub-pixel 304 and the other sub-pixels, and can effectively suppress sudden brightness changes at the edge of the white sub-pixel 301, thereby making the complementary color transition smoother and reducing the occurrence of color discontinuity.

[0035] It should be noted that if Figure 3 and Figure 4 As shown, when the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 are green, red, and blue sub-pixels, respectively, the mixing of light between the green sub-pixel and the blue sub-pixel can cover a wider color gamut compensation range, thereby neutralizing the yellow or magenta color cast of the white sub-pixel 301. In addition, since the human eye is most sensitive to green light and secondly to blue light, the blue sub-pixel can be preferentially set close to the green sub-pixel, expanding the adjacent area between the two and improving the smoothness of the edge transition, thereby enhancing the display effect of the display panel and improving the viewing experience.

[0036] In some embodiments, as Figure 1-Figure 4 As shown, the area of ​​the second complementary color portion 320 of the first sub-pixel 302 and the area of ​​the second complementary color portion 320 of the second sub-pixel 303 are both smaller than the sum of the areas of the first complementary color portion 310 of the first sub-pixel 302 and the first complementary color portion 310 of the second sub-pixel 303; Figure 1-Figure 4 As shown, for any pixel unit 3, since the first sub-pixel 302 and the second sub-pixel 303 are symmetrically arranged, and the first complementary color portions 310 of the two sub-pixels are both located on the same side of the white sub-pixel 301 and away from the compensation opening 3011 of the white sub-pixel 301, the light emitting area and light intensity of the light emitting regions of the white sub-pixel 301 and the first complementary color portions 310 near the first sub-pixel 302 and the second sub-pixel 303 are relatively large. Therefore, by making the sum of the areas of the first complementary color portion 310 of the first sub-pixel 302 and the first complementary color portions 310 of the second sub-pixel 303, that is, the total area of ​​the first complementary color portions 310 of the two sub-pixels 303, larger than the area of ​​either the second complementary color portion 320 of the first sub-pixel 302 or the second complementary color portion 320 of the second sub-pixel 303, obvious color shift problems can be prevented in the pixel unit 3, and the color complementary effect of the white sub-pixel 301 and the color accuracy of the display panel can be improved.

[0037] In some embodiments, as Figure 1-Figure 4As shown, the connection position between the first complementary color portion 310 and the second complementary color portion 320 of the first sub-pixel 302, and the connection position between the first complementary color portion 310 and the second complementary color portion 320 of the second sub-pixel 303 are respectively adapted to the outline of the white sub-pixel 301. This can enhance the optical coupling between the first sub-pixel 302, the second sub-pixel 303 and the white sub-pixel 301, improve the complementary color effect of the two on the white sub-pixel 301, and optimize the edge transition of the white sub-pixel 301 to prevent the problem of sudden change in light intensity due to outline misalignment, thereby reducing aliasing and color fringing in the displayed image.

[0038] In some embodiments, as Figure 1-Figure 4 As shown, both the first sub-pixel 302 and the second sub-pixel 303 are provided with a notch portion 3201. The opening of the notch portion 3201 is away from the white sub-pixel 301, which can reduce the width of the first complementary color portion 310, the second complementary color portion 320 and the connecting area thereof, thereby reducing the light-emitting area of ​​the area where the notch portion 3201 is located, helping to achieve a smooth transition between the first complementary color portion 310 and the second complementary color portion 320, ensuring that both provide uniform complementary color light for the white sub-pixel 301, thereby improving the overall complementary color performance.

[0039] For example, Figure 1-Figure 4 As shown, the notch 3201 is located in the connecting area between the first complementary color portion 310 and the second complementary color portion 320, which can reduce the light emitting area of ​​the first sub-pixel 302 and the second sub-pixel 303 in the area opposite to the vertex of the white sub-pixel 301, thereby preventing the problem of uneven fill light. For example, Figure 3 and Figure 4 As shown, for the first sub-pixel 302 and the second sub-pixel 303, since the portion of the second complementary color portion 320 away from the first complementary color portion 310 extends to the end of the first complementary color portion 310 of the third sub-pixel 304, by providing a notch 3201 in the region of the second complementary color portion 320 away from the first complementary color portion 310 and away from the third sub-pixel 304, the light intensity of the second complementary color portion 320 of the first sub-pixel 302 and the second complementary color portion 320 of the second sub-pixel 303 near the third sub-pixel 304 can be weakened, thereby reducing interference between the two portions on the third sub-pixel 304, thereby ensuring the complementary color effect of the third sub-pixel 304 on the white sub-pixel 301.

[0040] For example, the notch portion 3201 may be arc-shaped or a broken line formed by sequentially connecting a plurality of straight lines, thereby improving the smoothness of the contour of the notch portion 3201 and ensuring the complementary color effect of the first sub-pixel 302 and the second sub-pixel 303 on the white sub-pixel 301.

[0041] In order to verify the display effect of the display panel provided by this application, a comparative embodiment can be constructed to verify the display effect of the display panel. Figure 9As shown, J, Q, and K respectively represent different types of display panels, and the sub-pixel shapes and arrangement manners in the pixel unit 3 constituting the light-emitting structure are as Figure 9 shown. Among them, the white sub-pixel 301, red sub-pixel, green sub-pixel, and blue sub-pixel in the display panel J are respectively block structures with compensation openings 3011, and the four types of pixels are arranged in a "field" shape; the display panel Q is the display panel provided by the present application, and the green sub-pixel, red sub-pixel, and blue sub-pixel in its pixel unit 3 are arranged in a ring-shaped complementary color structure around the white sub-pixel 301; the white sub-pixel 301, green sub-pixel, red sub-pixel, and blue sub-pixel of the pixel unit 3 in the display panel K are all strip-shaped with the same extension direction, and are arranged in sequence in the pixel unit 3 in the direction perpendicular to the extension direction. When the display panels J, Q, and K display images, obvious color deviation appears in the edge area of the image displayed by the display panel J, and color fringes are generated. The clarity of the image displayed by the display panel K is poor, and there is an obvious bright-dark stratification phenomenon; in contrast, the image displayed by the display panel Q has a higher degree of uniformity and is clearer, and the transition in its edge area is relatively gentle. That is to say, compared with the display panels in the related art, the display panel provided by the present application displays images more clearly and has a more excellent imaging effect.

[0042] In some embodiments, the display panel provided by the present application includes a first electrode layer 4 and a second electrode layer 5, as Figure 8 shown. The first electrode layer 4 is disposed between the substrate 1 and the pixel definition layer 2 and can be used as the anode layer of the display panel. Multiple first electrode layers 4 can be provided, and each sub-pixel corresponds to one first electrode layer 4 to achieve independent driving of each sub-pixel; the second electrode layer 5 is located on the side of the pixel unit 3 away from the substrate 1 and can be used as the cathode of the display panel to form a top-emitting cathode. Therefore, the second electrode layer 5 can be formed of a transparent material to ensure the light extraction efficiency of the display panel. When a driving voltage is applied, electrons are injected through the first electrode layer 4, and holes are injected through the second electrode layer 5, and they are recombined and emit light in the light-emitting layer of the sub-pixel, thereby precisely controlling the lighting state of each sub-pixel.

[0043] In some embodiments, the display panel provided by the present application further includes an auxiliary electrode layer and an auxiliary electrode connection portion 6 electrically connected to the second electrode layer 5. The auxiliary electrode layer is connected to the first electrode layer 4; since the first electrode layer 4 constitutes the top-emitting cathode of the display panel, the voltage distribution and current path can be optimized through the auxiliary electrode layer to ensure that each pixel unit 3 can uniformly receive electrical signals, which is helpful for the response speed and light-emitting energy efficiency of the display panel.

[0044] Furthermore, as Figure 5 and Figure 6As shown, the notches 3201 of at least two adjacent pixel units 3 enclose a non-rectangular transition cavity. By setting the transition cavity as a non-rectangular structure, the encroachment on the edge areas of the first sub-pixel 302 and the second sub-pixel 303 can be reduced, ensuring the uniformity of light output from the first sub-pixel 302 and the second sub-pixel 303 and the complementary color effect of the white sub-pixel 301. Furthermore, the pixel definition layer 2 has a via hole in the area corresponding to the transition cavity. The shape of the via hole is adapted to the transition cavity. The auxiliary electrode connection portion 6 is located within the via hole and serves as a connection path between the first electrode layer 4 and the auxiliary electrode layer. Specifically, since the cathode layer is connected to the auxiliary electrode layer through the auxiliary electrode connection portion 6, the auxiliary electrode layer can be disposed between the pixel definition layer 2 and the base substrate 1. Therefore, when preparing the first electrode layer 4 of the display panel, that is, when preparing the cathode layer, a via hole can be etched in the pixel definition layer 2 by an etching process. Then, a second electrode layer 5 can be formed on the side of the pixel unit 3 away from the base substrate 1 by a sputtering process, thereby forming the auxiliary electrode connection portion 6 for connecting the auxiliary electrode layer and the first electrode layer 4 within the via hole.

[0045] In some embodiments, the display panel provided by the present application has a display area and a non-display area surrounding the display area, wherein the display panel includes a first power supply line 7 and a second power supply line 8 arranged side by side and alternately in a first direction in the display area; specifically, the first power supply line 7 and the second power supply line 8 are arranged alternately in the first direction, and each first power supply line 7 or each second power supply line 8 is located between two adjacent pixel units 3, so that the first power supply line 7 and the second power supply line 8 are arranged in an orderly manner in the display area, reducing interference with sub-pixels. More specifically, the first power supply line 7 can serve as a power supply line for the display panel, such as a VDD line; when the white sub-pixel 301, the first sub-pixel 302, the second sub-pixel 303, and the third sub-pixel 304 of two adjacent pixel units 3 are respectively connected to the same first power supply line 7, so that the same first power supply line 7 provides a positive operating voltage for all sub-pixels of the two adjacent pixel units 3, achieving efficient driving of the pixel units 3 and improving the working stability of the pixel driving circuit by centralized power supply.

[0046] Similarly, the second power supply line 8 can serve as an auxiliary electrode layer of the display panel to provide a stable potential reference for the pixel driving circuit; since the second power supply line 8 and the VSS line of the gate 141 driving circuit have the same voltage drop characteristics, they can be prepared simultaneously in the same process, that is, the second power supply line 8 is formed in the display area, and the VSS line is formed in the non-display area, which is conducive to simplifying the display panel manufacturing process and reducing production costs; since the same second power supply line 8 is electrically connected to the white sub-pixel 301, the first sub-pixel 302, the second sub-pixel 303 and the third sub-pixel 304 of two adjacent pixel units 3, the wiring design can be optimized to improve the uniformity of the voltage distribution of the display panel and the stability of the display performance.

[0047] Further, if Figure 5 and Figure 6 As shown, the first power line 7 and the second power line 8 are extended along the second direction, and a touch line 901 with the same extension direction is provided between adjacent first power lines 7 and second power lines 8. The white sub-pixel 301, the first sub-pixel 302, the second sub-pixel 303 and the third sub-pixel 304 of each pixel unit 3 are respectively electrically connected to a touch line 901; by arranging the first power line 7, the second power line 8 and the touch line 901 side by side along the first direction and extending in the second direction, the wiring space of the three in the display panel can be saved, and signal interference can be reduced. At the same time, each pixel unit 3 is connected to an independent touch line 901, ensuring precise control of each pixel unit 3 and improving the touch sensitivity and display stability of the display panel.

[0048] In some embodiments, as Figure 8 As shown, the display panel provided by the present application also includes a buffer layer 10, a dielectric layer 11, a passivation layer 12, a planarization layer 13, and a thin-film transistor 14, which are stacked in sequence. Specifically, the buffer layer 10 is directly disposed on the surface of the base substrate 1, which can effectively improve the surface flatness of the substrate; the dielectric layer 11 mainly performs an insulating function, providing protection for the source and drain electrodes and active layer of the thin-film transistor 14; the passivation layer 12 significantly improves the operational stability and reliability of the thin-film transistor 14; and the topmost planarization layer 13, by precisely leveling the surface of the first electrode layer 4, ensures the overall flatness of the subsequent pixel definition layer 2, thereby guaranteeing the overall performance of the display panel.

[0049] Further, if Figure 8As shown, thin-film transistors 14 are disposed between dielectric layer 11 and passivation layer 12. Each thin-film transistor 14 is electrically connected to the corresponding first electrode layer 4 via a via hole, thereby precisely controlling the light-emitting state of each sub-pixel. Furthermore, thin-film transistor 14 may include an active layer and source / drain electrodes. The active layer is connected to the gate line and electrically insulated by a gate insulating layer 142, ensuring stable transmission of the gate 141 signal, thereby achieving precise driving of the sub-pixels and stable light emission.

[0050] Further, if Figure 5 and Figure 6 As shown, any pixel unit 3 includes a white sub-pixel 301, a first sub-pixel 302, a second sub-pixel 303 and a third sub-pixel 304. Therefore, the white sub-pixel 301, the first sub-pixel 302, the second sub-pixel 303 and the third sub-pixel 304 are respectively connected to the first data line 9021, the second data line 9022, the third data line 9023 and the fourth data line 9024 through an independent pixel driving circuit including a thin film transistor 14, ensuring the independent adjustability of each sub-pixel and helping to achieve precise control and stable driving of the overall display of the pixel unit 3.

[0051] Furthermore, the display panel further includes a shielding layer 15, such as Figure 8 As shown, the shielding layer 15 is electrically connected to the thin film transistor 14 in the buffer layer 10, and the orthographic projection of the thin film transistor 14 in the thickness direction of the substrate 1 is located within the orthographic projection of the shielding layer 15, so as to form an electromagnetic shield and protect the thin film transistor 14 through the shielding layer 15; in addition, since the active layer and the shielding layer 15 of the thin film transistor 14 are respectively located in the dielectric layer 11 and the buffer layer 10, when there is a distance between the active layer and the shielding layer 15 of the thin film transistor 14, a capacitor structure can be formed between the two and serve as the plates of the capacitor structure, which can be used to store the voltage signal of the corresponding sub-pixel, ensuring that the sub-pixel maintains stable brightness and color display during the refresh interval.

[0052] In some embodiments, the display panel also includes an encapsulation layer 19, which is arranged on the side of the second electrode layer 5 away from the base substrate 1, and is used to encapsulate and protect the internal components in the display panel and reduce external environmental interference; when the display panel is an LCD (Liquid Crystal Display), the display panel also includes a filling layer 20 and an alignment layer 21 arranged on the side of the encapsulation layer 19 away from the base substrate 1, wherein the filling layer 20 can be used to fill the gaps in the display panel or for buffering to ensure structural stability and performance; the alignment layer 21 can use a dielectric alignment material to orient the liquid crystal molecules; in addition, a protective layer 18 is also provided on the light-emitting side of the display panel to protect the surface of the display panel, which will not be repeated here.

[0053] A second aspect of the present application provides a display device; specifically, the display device includes a display panel as described in any one of the embodiments of the first aspect, and thus possesses all the advantages and benefits of the display panel. Exemplarily, the display device can be a mobile phone, handheld device, tablet computer, monitor, self-service information kiosk, video screen, in-vehicle display, or other display device with information interaction capabilities, which will not be described in detail here.

[0054] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0055] The various embodiments in this application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0056] The description of this application is provided for purposes of illustration and description and is not intended to be exhaustive or to limit the application to the disclosed form. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the application and to enable those skilled in the art to understand the application and design various embodiments with various modifications suitable for specific applications.

[0057] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0058] While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0059] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A display panel, characterized in that: It includes a stacked base substrate and a pixel definition layer; The pixel definition layer array is arranged with a plurality of pixel units; each of the pixel units includes a white sub-pixel, and a first sub-pixel, a second sub-pixel, and a third sub-pixel for adjusting the color temperature of the white sub-pixel; The first sub-pixel, the second sub-pixel and the third sub-pixel together form a ring-shaped complementary color structure and surround the white sub-pixel. The first sub-pixel and the second sub-pixel are symmetrically distributed and partially adjacent to each other. The third sub-pixel is adjacent to the first sub-pixel and the second sub-pixel respectively. The white sub-pixel is recessed toward the third sub-pixel to form a compensation opening. Part of the third sub-pixel is located within the compensation opening and matches the compensation opening.

2. The display panel according to claim 1, wherein: The first sub-pixel, the second sub-pixel and the third sub-pixel each include a first complementary color portion and a second complementary color portion connected to each other; The first complementary color portion and the second complementary color portion of the first sub-pixel, the first complementary color of the third complementary color portion, and the second complementary color portion and the first complementary color portion of the second sub-pixel are adjacent to each other in sequence and form an annular complementary color structure surrounding the white sub-pixel, and the second complementary color portion of the third sub-pixel extends into the compensation opening and is adapted to the compensation opening.

3. The display panel according to claim 2, wherein: An end portion of the first complementary color portion of the first subpixel is adjacent to an end portion of the first complementary color portion of the second subpixel, and the first complementary color portion of the first subpixel, the first complementary color portion of the second subpixel, and the first complementary color portion of the third subpixel extend along a first direction; Along the second direction, the first complementary color portion of the first sub-pixel and the first complementary color portion of the second sub-pixel are located on opposite sides of the white sub-pixel as the third complementary color portion; wherein the first direction is perpendicular to the second direction.

4. The display panel according to claim 3, wherein: In the first direction, the second complementary color portion of the first sub-pixel and the second complementary color portion of the second sub-pixel are located on opposite sides of the white sub-pixel, and the second complementary color portion of the third sub-pixel protrudes into the compensation opening along the second direction; The length of the first complementary color portion of the third subpixel along the first direction is greater than or equal to the length of the white subpixel, and the area of ​​the second complementary color portion of the third subpixel is smaller than the first complementary color portion; The length of the first complementary color portion of the third subpixel along the first direction is smaller than that of the white subpixel, and the area of ​​the second complementary color portion of the third subpixel is greater than or equal to that of the first complementary color portion.

5. The display panel according to claim 3, wherein: A connection position between the first complementary color portion and the second complementary color portion of the first sub-pixel and a connection position between the first complementary color portion and the second complementary color portion of the second sub-pixel are respectively adapted to the outline of the white sub-pixel.

6. The display panel according to claim 5, wherein The first sub-pixel and the second sub-pixel are both provided with a notch, and the notch is arranged away from the white sub-pixel; The notch is located in the connection area between the first complementary color portion and the second complementary color portion, and / or The notch is located in a region of the second color-complementing portion away from the first color-complementing portion and is disposed away from the third sub-pixel.

7. The display panel according to claim 6, wherein: It also includes a first electrode layer respectively arranged between the base substrate and the pixel definition layer, a second electrode layer where the pixel unit is away from the base substrate, and an auxiliary electrode connection portion connected to the second electrode layer; The notches of at least two adjacent pixel units enclose a non-rectangular transfer cavity, the pixel definition layer has a via hole in a region corresponding to the transfer cavity, and the auxiliary electrode connection portion is located in the via hole and matches the transfer cavity.

8. The display panel according to claim 3, wherein: The display panel has a display area and a non-display area surrounding the display area, and the display panel includes a first power supply line and a second power supply line arranged in the display area. The first power lines and the second power lines are alternately arranged in a first direction, each first power line or each second power line is located between two adjacent pixel units, the white sub-pixel, the first sub-pixel, the second sub-pixel, and the third sub-pixel of two adjacent pixel units are electrically connected to the same first power line, and the white sub-pixel, the first sub-pixel, the second sub-pixel, and the third sub-pixel of two adjacent pixel units are connected to the same second power line; The first power line and the second power line extend along the second direction, and a touch line extending along the second direction is provided between adjacent first power lines and second power lines, and each of the touch lines is electrically connected to one of the white sub-pixel, the first sub-pixel, the second sub-pixel and the third sub-pixel of the pixel unit.

9. The display panel according to claim 1, wherein It also includes a stacked buffer layer, a dielectric layer, a passivation layer and a planar layer, wherein the buffer layer is disposed on the substrate; A thin film transistor is disposed in the dielectric layer and the passivation layer and is electrically connected to the first electrode layer through a transfer hole; as well as The shielding layer is arranged in the buffer layer and electrically connected to the thin film transistor. The orthographic projection of the thin film transistor in the thickness direction of the base substrate is located within the orthographic projection of the shielding layer.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

Images