Display panel and display device

Abstract

This utility model provides a display panel and a display device. The display panel includes: multiple data lines; multiple scan lines, which intersect with the multiple data lines; and multiple sub-pixels, each sub-pixel being electrically connected to one of the multiple data lines and one of the multiple scan lines. Each sub-pixel is internally divided into a first RGB sub-pixel and a second RGB sub-pixel located directly below the first sub-pixel. The first sub-pixel is a bright area, and the second sub-pixel is a dark area. In the multiple sub-pixels, the bright and dark areas are alternately arranged along the extension direction of the data lines; or a portion of the first and second sub-pixels forms a first unit N, and another portion of the second sub-pixel and another first sub-pixel form a second unit N+1. The bright and dark areas of the first unit N and the second unit N+1 are mirror-symmetrically arranged along the extension direction of the scan lines.

Description

Technical Field

[0001] This utility model relates to the field of display, and more particularly to a display panel and display device. Background Technology

[0002] Existing technologies (such as VA mode) improve viewing angles and color shift by dividing each pixel into bright and dark areas and controlling the orientation of liquid crystal molecules. However, this method can cause dark lines to appear on the screen, thereby reducing the brightness and clarity of the display. Utility Model Content

[0003] This invention was made in view of the above-mentioned problems, and its purpose is to provide a display panel and display device that can reduce the visibility of dark patterns.

[0004] One embodiment of this utility model provides a display panel, comprising: multiple data lines; multiple scan lines intersecting with the multiple data lines; and multiple sub-pixels, wherein each sub-pixel is electrically connected to one of the multiple data lines and one of the multiple scan lines, and each sub-pixel is internally divided into a first RGB sub-pixel and a second RGB sub-pixel located directly below the first sub-pixel, wherein the first sub-pixel is a bright area and the second sub-pixel is a dark area, and in the multiple sub-pixels, the bright area and the dark area are alternately arranged along the extension direction of the data lines; or a portion of the first sub-pixel and the second sub-pixel form a first unit N, and another portion of the second sub-pixel and another first sub-pixel form a second unit N+1, wherein the bright area and the dark area of ​​the first unit N and the second unit N+1 are mirror-symmetrically arranged along the extension direction of the scan lines.

[0005] Preferably, in one embodiment, along the extension direction of the scan line, the first sub-pixel is sequentially provided with a red bright area, a green bright area, and a blue bright area; the second sub-pixel is sequentially provided with a red dark area, a green dark area, and a blue dark area; along the extension direction of the data line, in the first sub-pixel, the red dark area of ​​the second sub-pixel is provided directly below the green bright area of ​​the first sub-pixel, and in the second sub-pixel adjacent to the first sub-pixel, the green bright area of ​​the first sub-pixel of the second sub-pixel is located directly below the red dark area of ​​the second sub-pixel of the first sub-pixel, and the red dark area of ​​the second sub-pixel of the second sub-pixel is provided directly below the green bright area of ​​the first sub-pixel of the second sub-pixel, with the green bright area and red dark area of ​​the first sub-pixel and the green bright area and red dark area of ​​the second sub-pixel alternating.

[0006] Preferably, in one embodiment, in the extension direction along the data line, the green dark area of ​​the first sub-pixel of the first sub-pixel and the red dark area of ​​the second sub-pixel of the second sub-pixel are located on the left and right sides of the data line.

[0007] Preferably, in one embodiment, the green dark area of ​​the first sub-pixel of the first sub-pixel and the red dark area of ​​the second sub-pixel of the second sub-pixel are located at diagonal positions relative to the data line.

[0008] Preferably, in one embodiment, along the extension direction of the data line, each dark area and each bright area on the same column is assigned only one light alignment direction.

[0009] Preferably, in one embodiment, in the extension direction of the data line, the green bright area and red dark area of ​​the first sub-pixel, and the green bright area and red dark area of ​​the second sub-pixel are each matched with only one photoorientation direction.

[0010] Preferably, in one embodiment, each row of first-row pixel electrodes is a dark area, and the second row of pixel electrodes is internally divided into a first region and a second region, the first region and the second region being bright areas respectively. The first unit N includes the dark area of ​​the first-row pixel electrodes and the bright area of ​​the first region of the second-row pixel electrodes, and the second unit N+1 includes the bright area of ​​the second region of the second-row pixel electrodes and the dark area of ​​another first-row pixel electrode.

[0011] Preferably, in one embodiment, a red dark area, a green dark area, and a blue dark area of ​​a first row of pixel electrodes are sequentially arranged on the first row of scan lines; a red bright area, a green bright area, and a blue bright area of ​​a second row of pixel electrodes are sequentially arranged on the second row of scan lines; and a red dark area, a green dark area, and a blue dark area of ​​a first row of pixel electrodes are sequentially arranged on another first row of pixel electrodes adjacent to the second row of pixel electrodes. The first unit N includes the red dark area of ​​the first row of pixel electrodes and the green bright area of ​​the first region of the second row of pixel electrodes, and the second unit N+1 includes the green bright area of ​​the second region of the second row of pixel electrodes and the red dark area of ​​the other first row of pixel electrodes.

[0012] Preferably, in one embodiment, in the extension direction of the data line, that is, each dark area and bright area in the same column is equipped with only one light alignment direction.

[0013] One embodiment of the present invention provides a display device, which includes the display panel provided in the above embodiment.

[0014] According to this utility model, a display panel and display device that can reduce the visibility of dark patterns can be provided. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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 from these drawings without creative effort.

[0016] Figure 1A This is a schematic diagram of the UV2A light alignment direction and dark pattern as an existing technology.

[0017] Figure 1B This is a schematic diagram of the UV2A-II photoorientation direction and dark pattern as an existing technology.

[0018] Figure 2 This is a schematic diagram illustrating an example of a pixel unit included in a display panel according to an embodiment of the present invention.

[0019] Figure 3 This is a diagram schematically illustrating the structure of an example of a sub-pixel.

[0020] Figure 4 This is a schematic diagram showing the light alignment direction and dark patterns within a sub-pixel.

[0021] Figure 5 This is a schematic diagram illustrating an example of a pixel unit provided in a display panel according to another embodiment of the present invention. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The following disclosure provides numerous different embodiments for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0024] In the field of liquid crystal displays (LCDs), wide viewing angles and low color shift are crucial for enhancing the user's visual experience. Currently, mainstream VA (Vertical Alignment) technology achieves this by setting bright and dark areas within each pixel and creating multiple domains (typically four bright and four dark areas, for a total of eight domains). Specifically, UV2A (UV VA) technology is a VA (Vertical Alignment) panel technology that uses ultraviolet light (UV) for liquid crystal alignment. Its key lies in utilizing a special polymer material as an alignment film to precisely control the tilt of liquid crystal molecules along the ultraviolet light direction. Introducing UV2A technology eliminates the need for the slits and protrusions currently used in VA-mode LCD panels to control liquid crystal molecule alignment, thus improving the aperture ratio, contrast ratio, and response speed of the LCD panel, and significantly reducing production processes. However, limitations exist in the photoalignment process. For example, in the traditional UV2A process, such as... Figure 1A As shown, the upper and lower substrates require vertical and horizontal light alignment respectively, resulting in swastika-shaped dark lines when the liquid crystal is tilted. This severely affects light transmittance, making the screen display less bright and clear. Furthermore, as... Figure 1B As shown, although the second-generation UV2A-II process has been improved and some dark fringes have been reduced, dark fringes still occupy a large amount of the opening area space in the 8-domain structure, and the effect of improving transmittance is limited. Therefore, there are still some areas that can be improved.

[0025] In response, this utility model provides an array substrate, a liquid crystal display panel, and a display device for reducing the visibility of dark patterns.

[0026] The display panel and display device provided by this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Implementation Method 1 like Figure 2 As shown, the liquid crystal display panel 100 involved in this embodiment includes: multiple data lines D; multiple scan lines G, which intersect with the multiple data lines D to form a pixel matrix; and multiple pixel units 10 arranged in an array.

[0028] Each pixel unit 10 includes multiple sub-pixels 30 and multiple active components. The active components are, for example, amorphous silicon thin-film transistors, polycrystalline silicon thin-film transistors, or other types of switches. Each sub-pixel 30 includes a first sub-pixel internally divided into a first sub-pixel and a second sub-pixel located directly below the first sub-pixel. In this embodiment, the first sub-pixel is a bright area, and the second sub-pixel is a dark area. Among the multiple sub-pixels 30, the bright and dark areas are alternately arranged vertically along the extension direction of the data lines.

[0029] Specifically, along the extension direction of the scan line, the first sub-pixel is sequentially provided with a red bright area, a green bright area, and a blue bright area; the second sub-pixel is sequentially provided with a red dark area, a green dark area, and a blue dark area; along the extension direction of the data line, the red dark area of ​​the second sub-pixel is provided directly below the green bright area of ​​the first sub-pixel of the first sub-pixel, the green bright area of ​​the first sub-pixel of the adjacent second sub-pixel is located directly below the red dark area of ​​the second sub-pixel of the first sub-pixel, and the red dark area of ​​the second sub-pixel of the second sub-pixel is provided directly below the green bright area of ​​the first sub-pixel of the second sub-pixel, with the green bright area of ​​the first sub-pixel and the red dark area of ​​the second sub-pixel alternating.

[0030] Along the extension direction of the data line, in adjacent first and second sub-pixels, the green dark area of ​​the first sub-pixel of the first sub-pixel and the red dark area of ​​the second sub-pixel of the second sub-pixel are located on the left and right sides of the data line.

[0031] The green dark area of ​​the first sub-pixel of the first sub-pixel and the red dark area of ​​the second sub-pixel of the second sub-pixel are located at an oblique position relative to the data line.

[0032] In this embodiment, a low color shift and wide viewing angle design is utilized. Subpixels contain both bright and dark areas, arranged in a flip-flop configuration. Bright and dark areas within the R / G / B subpixels are arranged alternately above and below the scan line. Along the extension direction of the data lines, each dark and bright area in the same column is assigned only one photoorientation direction. Specifically, in this embodiment, the green bright area of ​​the first subpixel and the red dark area of ​​the second subpixel are assigned only one photoorientation direction; the blue bright area of ​​the first subpixel and the green dark area of ​​the second subpixel are assigned only one photoorientation direction; the red bright area of ​​the first subpixel and the blue dark area of ​​the second subpixel are assigned only one photoorientation direction; and so on. This ensures no dark fringes within the domains, achieving optimal transmittance. The individual photoorientations across pixels can be combined to form a wide-viewing-angle, low color shift VA architecture with 4 domains for bright areas and 4 domains for dark areas, for a total of 8 domains.

[0033] When a voltage or other signal is applied, the liquid crystal molecules tilt to allow light to pass through in the bright subpixels, while the liquid crystal molecules remain vertical to block light from passing through in the dark subpixels. Thus, through the coordinated work of the bright and dark subpixels, the contrast of the image is significantly improved.

[0034] In this embodiment, such as Figure 2As shown, pixel unit 10 sequentially includes a first sub-pixel 30R as a red sub-pixel, a second sub-pixel 30G as a green sub-pixel, and a third sub-pixel 30B as a blue sub-pixel in the row direction (the extension direction of scan line G). However, it is not limited to this, and the color and order of sub-pixels 30 can be adjusted according to their structural design and manufacturing requirements. In addition, in this invention, when it is not necessary to distinguish between the first sub-pixel 30R, the second sub-pixel 30G, and the third sub-pixel 30B, they are sometimes collectively referred to as sub-pixels 30.

[0035] In this embodiment, such as Figure 3 As shown, the dark area sub-pixels and bright area sub-pixels of sub-pixel 30 are electrically connected to the same data line and the same scan line, respectively. Furthermore, the dark area sub-pixels and bright area sub-pixels are respectively arranged on both sides of the data line and on both sides of the scan line. More specifically, in this embodiment, as... Figure 3 As shown, in the "+" shape formed by a data line D and a scan line G, the dark area subpixels are located in the upper right region, and the bright area subpixels are located in the lower left region. That is, the dark area subpixels and bright area subpixels are staggered in both the vertical and horizontal directions.

[0036] In addition, such as Figure 4 As shown, in this embodiment, the dark area subpixels and bright area subpixels of the same subpixel 30 each employ a single, different photoalignment direction to ensure that the liquid crystal molecules tilt in the same direction. Furthermore, in the column direction (the extension direction of the data line D), only one photoalignment direction is configured for the dark area subpixels and bright area subpixels of multiple subpixels 30 located in the same column. This results in no liquid crystal dark fringes within the domain, thereby achieving excellent transmittance.

[0037] Furthermore, in this embodiment, such as Figure 2 As shown, between the dark sub-pixels of two adjacent sub-pixels of the same color, a bright sub-pixel of a different color is configured. Specifically, a bright sub-pixel whose color follows the color of the two adjacent sub-pixels is configured. For example, between the dark sub-pixel of the first red sub-pixel 30R in the first row and the dark sub-pixel of the first red sub-pixel 30R in the third row, a bright sub-pixel of green sub-pixel 30G is configured. Furthermore, the bright sub-pixel of green sub-pixel 30G and the dark sub-pixel of red sub-pixel 30R arranged below it are configured within the same pixel matrix.

[0038] Furthermore, each row of subpixels includes a first subpixel 30R, a second subpixel 30G, and a third subpixel 30B arranged in alternating repeating patterns, each with a different orientation direction. Additionally, adjacent subpixels of the same color in the same row also have different orientation directions; for example, Figure 2The first red sub-pixel 30R in the first row and the second red sub-pixel 30R in the first row have different orientations (perpendicular to each other). The orientations of four adjacent sub-pixels can be designated as the first direction, the second direction, the third direction, and the fourth direction, respectively. These directions form odd multiples of 45° relative to the row direction (e.g., 45°, 135°, 225°, 315°). Furthermore, the color performance and brightness uniformity of the display panel can be optimized by adjusting the ratio of bright to dark areas in sub-pixels of different colors.

[0039] Therefore, by optimizing the arrangement of dark and bright subpixels, the area of ​​dark patterns is reduced, and the aperture ratio of the display panel is improved. Moreover, through individual photoorientation across pixels, a wide-viewing-angle, low-color-shift VA architecture can be formed with four domains each in the bright and dark areas, for a total of eight domains.

[0040] Implementation Method 2 The following is based on Figure 5 Other embodiments of this utility model will be described in detail below. Furthermore, for ease of explanation, components with the same function as those described in the above embodiments will be labeled with the same reference numerals and will not be described again.

[0041] Figure 5 This is a top view schematically showing the arrangement of the sub-pixels 30 according to Embodiment 2.

[0042] In this embodiment, the difference from Embodiment 1 is that it further includes multiple second pixel units 50, each second pixel unit 50 being arranged in a mirror-symmetrical manner with each pixel unit in the column direction. Specifically, in the mirror-symmetrical arrangement, the bright area sub-pixels of two adjacent sub-pixels of the same color are connected and aligned. Furthermore, these two connected bright area sub-pixels are configured in the same pixel matrix. This configuration is more advantageous for the fabrication of the CF substrate (color filter substrate). Additionally, by aligning the light across each pixel, a wide-viewing-angle, low-color-shift VA architecture with 4 domains each for bright and dark areas, totaling 8 domains, is formed.

[0043] The multiple sub-pixels 30 include multiple first row pixel electrodes and multiple second row pixel electrodes. Each first row pixel electrode includes dark areas sequentially arranged with RGB. The second row pixel electrodes are located below the first row pixel electrodes and include bright areas sequentially arranged with RGB. The second row pixel electrodes of each sub-pixel 30 are internally divided into a first region and a second region.

[0044] A portion of the first sub-pixel and the second sub-pixel form the first unit N, and another portion of the second sub-pixel and another first sub-pixel form the second unit N+1. The bright and dark areas of the first unit N and the second unit N+1 can be arranged mirror-symmetrically along the extension direction of the scan line.

[0045] Specifically, red dark areas, green dark areas, and blue dark areas of the first row of pixel electrodes are sequentially set on the first row of scan lines, and so on; red bright areas, green bright areas, and blue bright areas of the second row of pixel electrodes are sequentially set on the second row of scan lines, and so on; red dark areas, green dark areas, and blue dark areas of the first row of pixel electrodes are sequentially set on another first row of pixel electrodes, and so on.

[0046] In this embodiment, the first unit N (e.g., ) is arranged symmetrically and mirror-imagely from top to bottom. Figure 5 The pixel unit 10 shown) and the second unit N+1 (e.g., Figure 5 The second pixel unit 50 shown. The first unit N includes the dark area of ​​the first row of pixel electrodes and the first region of the second row of pixel electrodes, and the second unit N+1 includes the second region of the second row of pixel electrodes and the dark area of ​​another first row of pixel electrodes.

[0047] In this embodiment, adjacent pixels can be arranged mirror-symmetrically, with bright areas connected to the bright areas of the next pixel in an alternating arrangement, which makes CF (Color Filter) easier to fabricate. Individual photoorientation across pixels combines to form a wide-viewing-angle, low-color-shift (VA) architecture with four domains each for bright and dark areas, totaling eight domains.

[0048] In this embodiment, such as Figure 5 As shown, for example, the green areas marked ①②③④⑤⑥⑦⑧ are combined across pixels to form 4 domains of green bright area and 4 domains of green dark area, for a total of 8 domains to achieve a wide viewing angle and low color shift effect that is symmetrical and balanced in all directions.

[0049] By aligning only one light alignment direction in the extension direction of the data line, i.e., by aligning each dark and bright area in the same column with only one light alignment direction, the domain is free of liquid crystal dark lines, thus achieving the best transmittance.

[0050] in addition, Figure 5 The example illustrates subpixels ① to ⑧, which are green subpixels. These green subpixels, spanning the pixel matrix, combine to form eight domains: four bright domains and four dark domains, achieving a symmetrical and balanced wide-viewing-angle, low-color-shift effect both vertically and horizontally. Thus, through the multi-region light alignment and mirror-symmetric arrangement described above, the viewing angle characteristics of the display panel are improved, and color shift is reduced.

[0051] As described above, in this invention, firstly, a staggered arrangement of bright and dark areas is adopted within the sub-pixels, meaning that bright and dark areas alternate on the left and right sides of the data lines. This layout lays the foundation for subsequent technical optimization. Secondly, in terms of light orientation, in the vertical direction (column direction), each dark area and each bright area in the same column is set with only one light orientation direction, thereby eliminating liquid crystal dark patterns within the domain, effectively improving light transmittance, allowing the screen (display panel) to transmit light more fully, resulting in a better display effect. Furthermore, by separately oriented the light across pixels, four domains are cleverly combined for each of the bright and dark areas, constructing a wide-viewing-angle, low-color-shift VA architecture with a total of eight domains. This allows the screen to present a symmetrical and balanced wide-viewing-angle, low-color-shift effect in all directions, ensuring uniform color and brightness regardless of the viewing angle. In addition, by using mirror-symmetrical arrangement of adjacent pixels, this design greatly facilitates CF (Crystal Filter) production, reducing manufacturing difficulty and cost.

[0052] Therefore, compared with existing technologies, the technical solution of this utility model can solve the core problem of poor transmittance caused by excessive dark patterns in the 8 domains in existing UV2A and UV2A-II technologies, significantly improving the brightness and clarity of the screen. Furthermore, the technical solution of this utility model is superior in achieving a wide viewing angle and low color shift effect, bringing users a better visual experience. At the same time, the symmetrical pixel arrangement design is beneficial for CF (Chip Frame) production, reducing the difficulty and cost of the production process, and has significant advantages in practical production applications.

[0053] Furthermore, the display device provided by this utility model includes the liquid crystal display panel as described above. This display device can be any product or component with display functionality, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0054] All aspects of the embodiments disclosed herein are illustrative and should not be construed as limiting. Therefore, the technical scope of this utility model is not limited to the above embodiments, but is defined based on the claims. Furthermore, all modifications are included within the meaning and scope equivalent to the claims.

Claims

1. A display panel, characterized in that, include: Multiple data cables; Multiple scan lines intersect with multiple data lines; and Multiple sub-pixels, each sub-pixel being electrically connected to one of the multiple data lines and one of the multiple scan lines. Each of the sub-pixels is internally divided into a first RGB sub-pixel and a second RGB sub-pixel located directly below the first sub-pixel. The first sub-pixel is a bright area, and the second sub-pixel is a dark area. In the plurality of said sub-pixels, along the extension direction of said data line, the bright areas and the dark areas are arranged alternately; or The first sub-pixel and a portion of the second sub-pixel form a first unit N, and another portion of the second sub-pixel and another first sub-pixel form a second unit N+1. The bright and dark areas of the first unit N and the second unit N+1 are arranged in a mirror-symmetrical manner along the extension direction of the scan line.

2. The display panel as described in claim 1, characterized in that, Along the extension direction of the scan line, the first sub-pixel is sequentially provided with a red bright area, a green bright area, and a blue bright area; the second sub-pixel is sequentially provided with a red dark area, a green dark area, and a blue dark area. Along the extension direction of the data line, in the first sub-pixel, a red dark area of ​​the second sub-pixel is located directly below the green bright area of ​​the first sub-pixel. In the second sub-pixel adjacent to the first sub-pixel, the green bright area of ​​the first sub-pixel of the second sub-pixel is located directly below the red dark area of ​​the second sub-pixel of the first sub-pixel, and the red dark area of ​​the second sub-pixel of the second sub-pixel is located directly below the green bright area of ​​the first sub-pixel of the second sub-pixel. The first sub-pixel has green bright areas and red dark areas, and the second sub-pixel has green bright areas and red dark areas arranged alternately.

3. The display panel as described in claim 2, characterized in that, Along the extension direction of the data line, in adjacent first and second sub-pixels, the green dark area of ​​the first sub-pixel of the first sub-pixel and the red dark area of ​​the second sub-pixel of the second sub-pixel are located on the left and right sides of the data line.

4. The display panel as described in claim 3, characterized in that, The green dark area of ​​the first sub-pixel of the first sub-pixel and the red dark area of ​​the second sub-pixel of the second sub-pixel are located at diagonal positions relative to the data line.

5. The display panel as described in claim 2, characterized in that, In the extension direction of the data line, each dark area and each bright area on the same column is assigned only one light alignment direction.

6. The display panel as described in claim 5, characterized in that, In the extension direction of the data line, the green bright area and red dark area of ​​the first sub-pixel, and the green bright area and red dark area of ​​the second sub-pixel are each matched with only one photoorientation direction.

7. The display panel as described in claim 1, characterized in that, The first pixel electrode in each row is a dark area. The second row of pixel electrodes is internally divided into a first region and a second region. The first and second areas are both bright areas. The first unit N includes the dark area of ​​the first row of pixel electrodes and the bright area of ​​the first region of the second row of pixel electrodes. The second unit N+1 includes the bright area of ​​the second region of the second row of pixel electrodes and the dark area of ​​another first row of pixel electrodes.

8. The display panel as described in claim 7, characterized in that, The first row of the scan line contains red, green, and blue dark areas of pixel electrodes arranged sequentially. The second row of the scan line contains red, green, and blue bright areas of the second row of pixel electrodes. On another first-row pixel electrode adjacent to the second-row pixel electrode, red, green, and blue dark areas of the first-row pixel electrode are sequentially arranged. The first unit N includes the red dark area of ​​the first row of pixel electrodes and the green bright area of ​​the first region of the second row of pixel electrodes. The second unit N+1 includes the green bright area of ​​the second region of the second row of pixel electrodes and the red dark area of ​​another first row of pixel electrodes.

9. The display panel as described in claim 8, characterized in that, In the direction of the data cable extension, that is, each dark and bright area in the same column is equipped with only one light alignment direction.

10. A display device, characterized in that, The display panel includes any one of claims 1 to 9.

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