Display substrate, driving method thereof, display device and high-precision metal mask

Abstract

To avoid bright and dark stripes in a traverse direction from occurring in a second display sub-region on a display substrate.SOLUTION: In a display substrate, a display region of the display substrate comprises a first display sub-region A1, and a second display sub-region A2 in which a camera element is disposed correspondingly. Pixel distribution density in the first display sub-region is larger than pixel distribution density in the second display sub-region. The first display sub-region includes a plurality of first pixel units 10 and second pixel units 20 which are disposed adjacently, the first pixel unit includes a first sub-pixel 1 and a second sub-pixel 2, and the second pixel unit includes a third sub-pixel 3 and the second sub-pixel. The second display sub-region includes a plurality of third pixel units, and the third pixel unit includes the first sub-pixel, the second sub-pixel, and the third sub-pixel which are disposed adjacently. A distance between the adjacent first pixel unit and second pixel unit in the first display sub-region is smaller than a distance between the third pixel units in the second display sub-region.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application bearing application number 201810639832.6 and entitled "Display substrate, driving method thereof, display device, and high-precision metal mask" filed with the China Patent Office on June 20, 2018, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the display technology field, and more particularly to a display substrate, a driving method thereof, a display device, and a high-precision metal mask. [Background technology]

[0003] With the development of display technology, full-screen displays have attracted widespread attention because they have a large screen occupancy rate and a very narrow frame, which greatly improves the visual effect of viewers compared with general display screens. Currently, in display devices such as mobile phones using full-screen displays, a front camera, headphones, a fingerprint recognition area, or physical buttons are generally installed on the front of the display device to realize functions such as self-portrait, video calling, and fingerprint recognition. However, the installation of these essential functional elements is one of the restricting factors for improving the screen occupancy rate. Summary of the Invention

[0004] A display substrate according to an embodiment of the present disclosure, comprising: The display area of ​​the display substrate is A first display sub-region; a second display sub-region; A pixel distribution density in the first display sub-region is greater than a pixel distribution density in the second display sub-region.

[0005] In an embodiment of the present disclosure, at least a portion of an edge of the second display sub-region may overlap at least a portion of an edge of the display region, and a remaining portion of the second display sub-region may be surrounded by the first display sub-region.

[0006] In an embodiment of the present disclosure, the first display sub-region and the second display sub-region may be arranged in a row direction, or the first display sub-region and the second display sub-region may be arranged along a column direction.

[0007] In an embodiment of the present disclosure, the first display sub-region may be disposed surrounding the second display sub-region.

[0008] In an embodiment of the present disclosure, the second display sub-region may be one of a circular shape, a water drop shape, a rectangular shape, and a trapezoidal shape.

[0009] In an embodiment of the present disclosure, the first display sub-region and the second display sub-region may form a continuous display region, and the shape of the display region may be substantially rectangular.

[0010] In an embodiment of the present disclosure, the second display sub-region may be located in a corner of the display region.

[0011] In an embodiment of the present disclosure, an area of ​​the second display sub-region may be smaller than an area of ​​the first display sub-region.

[0012] In an embodiment of the present disclosure, the first display sub-region includes a plurality of first pixel units and a plurality of second pixel units arranged adjacent to each other, the first pixel unit includes a first sub-pixel and a second sub-pixel, and the second pixel unit includes a third sub-pixel and a second sub-pixel; The second display sub-region may include a plurality of third pixel units, and the third pixel units may include a first sub-pixel, a second sub-pixel and a third sub-pixel that are adjacent to each other.

[0013] In embodiments of the present disclosure, sub-pixels in the second viewing sub-region may be in the same row as some of the sub-pixels in the first viewing sub-region.

[0014] In embodiments of the present disclosure, sub-pixels in the second viewing sub-region may be in the same column as some of the sub-pixels in the first viewing sub-region.

[0015] In an embodiment of the present disclosure, an emitting area of ​​one of the first sub-pixels in the second display sub-region is equal to or larger than an emitting area of ​​one of the first sub-pixels in the first display sub-region; a light-emitting area of ​​one of the second sub-pixels in the second display sub-region is equal to or larger than a light-emitting area of ​​one of the second sub-pixels in the first display sub-region; A light-emitting area of ​​one of the third sub-pixels in the second display sub-region may be equal to or larger than a light-emitting area of ​​one of the third sub-pixels in the first display sub-region.

[0016] In an embodiment of the present disclosure, in the second display sub-region, the third pixel units may be arranged in a matrix.

[0017] In an embodiment of the present disclosure, in the second display sub-region, the third pixel units may be arranged in a checkerboard pattern.

[0018] In an embodiment of the present disclosure, in the second display sub-region, the first sub-pixel, the second sub-pixel and the third sub-pixel of the third pixel unit may be sequentially arranged in the same row.

[0019] In an embodiment of the present disclosure, in a third pixel unit in the second display sub-region, the first sub-pixel and the third sub-pixel may be arranged in the same row, and the second sub-pixel may be arranged in a row adjacent to the row in which the first sub-pixel and the third sub-pixel are located.

[0020] In an embodiment of the present disclosure, in the same third pixel unit, the orthogonal projection of the center of the second subpixel on the connecting line between the center of the first subpixel and the center of the third subpixel may be between the center of the first subpixel and the center of the third subpixel.

[0021] In an embodiment of the present disclosure, within the second display sub-region, the arrangement orders of the sub-pixels in two adjacent third pixel units along the row direction may be the same, and the arrangement orders of the sub-pixels in two adjacent third pixel units along the column direction may be opposite.

[0022] In an embodiment of the present disclosure, within the second display sub-region, the arrangement order of the sub-pixels in each of the third pixel units may be the same.

[0023] In an embodiment of the present disclosure, in the second display sub-region, the arrangement order of the sub-pixels in each of the third pixel units in the same column is the same; The arrangement orders of the sub-pixels in the third pixel units in two adjacent columns may be opposite to each other.

[0024] In an embodiment of the present disclosure, in the second display sub-region, the first sub-pixel, the second sub-pixel, and the third sub-pixel may have substantially the same shape.

[0025] In an embodiment of the present disclosure, within the second display sub-region, the light-emitting area of ​​one of the second sub-pixels may be smaller than or approximately equal to the light-emitting area of ​​one of the first sub-pixels, and the light-emitting area of ​​one of the second sub-pixels may be smaller than or approximately equal to the light-emitting area of ​​one of the third sub-pixels.

[0026] In the embodiment of the present disclosure, in the second display sub-region, the light-emitting area of ​​one of the first sub-pixels may be approximately equal to the light-emitting area of ​​one of the third sub-pixels.

[0027] In an embodiment of the present disclosure, in the first display sub-region, the first pixel units and the second pixel units may be arranged in an alternating manner in a column direction, and the first pixel units and the second pixel units may be arranged in an alternating manner in a row direction.

[0028] In an embodiment of the present disclosure, in the first pixel unit, the second sub-pixel and the first sub-pixel are arranged in the same row, and in the second pixel unit, the second sub-pixel and the third sub-pixel are arranged in the same row; For a first pixel unit and a second pixel unit adjacent to each other along the row direction, a second sub-pixel in the first pixel unit and a second sub-pixel in the second pixel unit may not be directly adjacent to each other.

[0029] In an embodiment of the present disclosure, within the first display sub-region, the light-emitting area of ​​one of the first sub-pixels, the light-emitting area of ​​one of the second sub-pixels, and the light-emitting area of ​​one of the third sub-pixels may be approximately the same.

[0030] In an embodiment of the present disclosure, in the first pixel unit, the second sub-pixel and the first sub-pixel are arranged in a shifted row and a shifted column, and in the second pixel unit, the second sub-pixel and the third sub-pixel are arranged in the same row; A first pixel unit and a second pixel unit adjacent to each other along the column direction may be grouped together, and in the same pixel group, the second sub-pixel in the first pixel unit and the third sub-pixel in the second pixel unit may be arranged in the same row, and the second sub-pixel in the first pixel unit and the second sub-pixel in the second pixel unit may be in the same column.

[0031] In an embodiment of the present disclosure, within the first display sub-region, the light-emitting area of ​​one of the second sub-pixels may be equal to or smaller than the light-emitting area of ​​one of the first sub-pixels, and the light-emitting area of ​​one of the second sub-pixels may be equal to or smaller than the light-emitting area of ​​one of the third sub-pixels.

[0032] In an embodiment of the present disclosure, in the pixel group, two of the second sub-pixels in the same pixel group may be arranged adjacent to each other along the column direction, and the two second sub-pixels may be arranged symmetrically with respect to the row direction.

[0033] In an embodiment of the present disclosure, in the same pixel group, the first sub-pixel and the third sub-pixel may have substantially the same shape, and the shape of a combination of two of the second sub-pixels may be substantially the same as the shape of the first sub-pixel.

[0034] In an embodiment of the present disclosure, within the first display sub-region, the arrangement order of the sub-pixels in each of the first pixel units may be the same, and the arrangement order of the sub-pixels in each of the second pixel units may be the same.

[0035] In an embodiment of the present disclosure, the shape of at least one of the first and third subpixels in the second display subregion may be substantially the same as the shape of the first subpixel in the first display subregion.

[0036] In an embodiment of the present disclosure, the shape of one of the first and second sub-pixels in the first display sub-region may be substantially the same as the shape of the second sub-pixel in the second display sub-region.

[0037] In the embodiment of the present disclosure, the shape of the first sub-pixel may be at least one of a rectangle and a hexagon.

[0038] Correspondingly, an embodiment of the present disclosure further provides a display device including the above display substrate.

[0039] In an embodiment of the present disclosure, the display device further includes a driver for driving the display substrate, and the driver specifically includes: receiving original image data; for each of the sub-pixels in the first display sub-region, determining a target grayscale value for the sub-pixel based on an initial grayscale value of a corresponding sub-pixel in the original image data; determining, for each of the sub-pixels in the second display sub-region, a target grayscale value for the sub-pixel based on a light-emitting area of ​​the sub-pixel, a pixel distribution density of the second display sub-region, and an initial grayscale value of a sub-pixel corresponding to a region in which the sub-pixel is located in the original image data; Each sub-pixel in the display substrate may be driven to display based on the target greyscale value.

[0040] Correspondingly, an embodiment of the present disclosure further provides a driving method for driving the display substrate, the driving method including: receiving original image data; for each of the sub-pixels in the first display sub-region, determining a target grayscale value for the sub-pixel based on an initial grayscale value of a sub-pixel corresponding to the sub-pixel in the original image data; determining, for each of the sub-pixels in the second display sub-region, a target grayscale value for the sub-pixel based on an emissive area of ​​the sub-pixel, a pixel distribution density of the second display sub-region, and an initial grayscale value of a sub-pixel corresponding to an area in which the sub-pixel is located in the original image data; and driving each sub-pixel in the display substrate to display based on its target greyscale value.

[0041] In an embodiment of the present disclosure, for each sub-pixel in the first display sub-region, determining a target grayscale value for the sub-pixel includes: For the first sub-pixel, the formula

[0042]

number

[0043] (wherein Gamma represents the gamma value of the display substrate, and x1 and x2 are initial grayscale values ​​of the two first sub-pixels corresponding to the first sub-pixel in the original image data, respectively), to determine a corresponding target grayscale value X; a target grayscale value Y of the second sub-pixel is equal to an initial grayscale value y of one second sub-pixel corresponding to the second sub-pixel in the original image data; For the third sub-pixel, the formula

[0044]

number

[0045] (where z1 and z2 are the initial grayscale values ​​of the two third sub-pixels corresponding to the third sub-pixel in the original image data, respectively), a corresponding target grayscale value Z may be determined.

[0046] In an embodiment of the present disclosure, for each sub-pixel in the second display sub-region, determining a target grayscale value for the sub-pixel includes: For the sub-pixel, the formula

[0047]

number

[0048] (wherein n is an arbitrary integer from 1 to N, N is the number of sub-pixels in the original image data that correspond to the sub-pixel, Gamma represents a gamma value of the display substrate, s represents a ratio between a light-emitting area of ​​the sub-pixel in the first display region and a light-emitting area of ​​the sub-pixel in the second display sub-region, ρ represents a ratio between a pixel distribution density in the first display sub-region and a pixel distribution density in the second display sub-region, k is an error adjustment coefficient, and x n is the initial grayscale value of the n-th sub-pixel corresponding to the sub-pixel in the original image data. ) may be used to determine the corresponding target grayscale value X.

[0049] Accordingly, an embodiment of the present disclosure further provides a high-precision metal mask for manufacturing the above-mentioned display substrate, the high-precision metal mask including a plurality of opening areas corresponding to the shapes and positions of the first sub-pixel, the second sub-pixel or the third sub-pixel. [Brief description of the drawings]

[0050] [Figure 1a] FIG. 1 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1b] FIG. 2 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1c] FIG. 3 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1d] FIG. 4 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1e] FIG. 5 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1f] FIG. 6 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1g] FIG. 7 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1h] FIG. 8 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 1i] FIG. 9 is a structural schematic diagram of a display substrate according to an embodiment of the present disclosure. [Diagram 2] FIG. 1 is a schematic diagram showing a partial structure of a display substrate according to an embodiment of the present disclosure. [Diagram 3] FIG. 2 is a schematic diagram showing a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 4] FIG. 3 is a schematic diagram showing a partial structure of a display substrate according to an embodiment of the present disclosure. [Diagram 5] FIG. 4 is a schematic diagram showing a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 6] FIG. 5 is a schematic diagram of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 7] FIG. 6 is a schematic diagram of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 8] FIG. 7 is a schematic diagram of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 9] FIG. 8 is a schematic diagram of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 10] FIG. 9 is a schematic diagram of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 11] 1 is a schematic diagram 10 of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 12] FIG. 11 is a schematic diagram of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 13] FIG. 12 is a schematic diagram of a partial structure of a display substrate according to an embodiment of the present disclosure. [Figure 14] 4 is a schematic flowchart of a method for driving a display substrate according to an embodiment of the present disclosure. [Figure 15] FIG. 13 is a diagram illustrating a demonstration of scanning a display substrate according to an embodiment of the present disclosure. [Figure 16] 1 is a structural schematic diagram of a high-precision metal mask according to an embodiment of the present disclosure. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0051] The embodiments of the present disclosure provide a display substrate, a driving method thereof, a display device, and a high-precision metal mask. In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the present disclosure will be described in more detail below with reference to the drawings. It should be apparent that the described embodiments are only a part of the embodiments of the present disclosure, and are not all of the embodiments. All other embodiments that a person skilled in the art can conceive based on the embodiments in the present disclosure without requiring creative efforts are within the scope of the present disclosure.

[0052] The shapes and sizes of each component in the drawings are not to scale but are merely intended to diagrammatically illustrate the contents of the present disclosure.

[0053] In a display substrate according to an embodiment of the present disclosure, as shown in FIGS. 1a to 1i, the display area of ​​the display substrate includes a first display sub-region A1 and a second display sub-region A2, and the pixel distribution density in the first display sub-region A1 is greater than the pixel distribution density in the second display sub-region A2.

[0054] In the display substrate according to the embodiment of the present disclosure, the display region is configured as a first display sub-region with a large pixel distribution density (i.e., high resolution) and a second display sub-region with a small pixel distribution density (i.e., low resolution). Since the pixel distribution density in the second display sub-region is small, a device such as a camera can be installed in the second display sub-region, which improves the light transmittance of the screen by reducing the local pixel distribution density, thereby improving the screen occupancy rate of the display substrate.

[0055] The pixel distribution density refers to the number of pixels evenly distributed in a unit area. The more pixels there are in a unit area, the higher the pixel distribution density and the higher the resolution. Conversely, the fewer the number of pixels in a unit area, the lower the pixel distribution density and the lower the resolution.

[0056] Furthermore, in the embodiment of the present disclosure, the calculation formula for pixel distribution density is specifically as follows:

[0057]

number

[0058] (wherein ρ represents pixel distribution density, x represents the number of display pixels in the row direction, y represents the number of display pixels in the column direction, and S represents the screen area.)

[0059] In a specific embodiment, in the display substrate according to the embodiment of the present disclosure, the second display sub-region may be one or more, and the first display sub-region may be a continuous region, or the first display sub-region may be a discontinuous region, which can be designed according to the actual application scenario and is not limited herein.

[0060] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, as shown in Figures 1a to 1g, at least some of the sides of the second display sub-region A2 overlap with at least some of the sides of the display region, and the remaining part of the second display sub-region A2 is surrounded by the first display sub-region A1, so that the second display sub-region A2 can be disposed at the edge of the display region.

[0061] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, the first display sub-region A1 is disposed surrounding the second display sub-region A2, as shown in Figures 1h-1i, so that the second display sub-region A2 can be disposed inside the display region.

[0062] Furthermore, in certain embodiments, the second display sub-region A2 may be arranged in a regular shape, for example, as shown in FIG. 1a to FIG. 1c, the second display sub-region A2 may be arranged in a rectangular shape. The apex angle of the rectangular shape may be a right angle or an arc-shaped angle. As shown in FIG. 1d, the second display sub-region A2 may be arranged in a trapezoid shape. The apex angle of the trapezoid shape may be a general included angle or an arc-shaped angle. As shown in FIG. 1h and FIG. 1i, the second display sub-region A2 may be arranged in a circular shape. It is needless to say that the second display sub-region A2 may be arranged in an irregular shape. For example, as shown in FIG. 1e, the second display sub-region A2 may be arranged in a water drop shape. Of course, in practical application, the shape of the second display sub-region may be designed according to the shape of the element arranged in the second display sub-region, and is not limited here.

[0063] In the display substrate according to the embodiment of the present disclosure, as shown in FIG. 1a to FIG. 1i, the first display sub-region A1 and the second display sub-region A2 may form a continuous display region, and the shape of the display region may be substantially rectangular. In this manner, the first display sub-region A1 and the second display sub-region A2 are formed into complementary shapes, thereby forming a continuous display region. Furthermore, for example, when the apex angles of the display region are all right angles, the display region is rectangular. Or, when the apex angles of the display region are arched corners, the shape of the display region is substantially rectangular.

[0064] In a specific embodiment, in the display substrate according to the embodiment of the present disclosure, the relative positional relationship and shape of the first display sub-region and the second display sub-region are not limited, and may be installed according to the screen design of the display substrate. Taking a mobile phone as an example, as shown in FIG. 1a, the second display sub-region A2 is installed in the upper left corner of the first display sub-region A1. As shown in FIG. 1b, the second display sub-region A2 is installed in the upper right corner of the first display sub-region A1. As shown in FIG. 1c to FIG. 1e, the second display sub-region A2 is installed above the center of the first display sub-region A1. As shown in FIG. 1f, the first display sub-region A1 and the second display sub-region A2 are arranged along the row direction. Here, the second display sub-region A2 may be located above or below the first display sub-region A1. In this way, a sensor, for example, a sensor for performing face recognition (for example, an infrared sensor, etc.) may be installed in the area where the second display sub-region A2 is located. As shown in FIG. 1g, the first display sub-region A1 and the second display sub-region A2 are arranged along the column direction. Here, the second display sub-region A2 may be located on the left or right side of the first display sub-region A1. In this way, a sensor, for example, a sensor for performing face recognition (for example, an infrared sensor, etc.) may be installed in the area where the second display sub-region A2 is located. As shown in FIG. 1h, the second display sub-region A2 is installed in the center of the first display sub-region A1. As shown in FIG. 1i, the second display sub-region A2 is installed in a corner of the display region, for example, the upper left corner. Of course, in practical application, the position of the second display sub-region A2 may be specifically designed according to the practical application scene, and is not limited here.

[0065] In a specific embodiment, in the display substrate according to the embodiment of the present disclosure, the pixel distribution density in the second display sub-region is determined according to the elements to be installed in the second display sub-region and the display needs, and is not limited thereto. For example, take the case where a camera is installed in the second display sub-region as an example, if the pixel distribution density is too large, it can ensure a good display effect, but it will have a negative effect on the clarity of the image, and if the pixel distribution density is too small, it can ensure high clarity of the image, but it will impair the display. In a specific embodiment, even in the resolution achievable by the conventional display substrate, the pixel distribution density of the second display sub-region is generally 1 / 4 or more of the pixel distribution density of the first display sub-region. For example, the pixel distribution density of the second display sub-region is 1 / 2, 1 / 3 or 1 / 4 of the pixel distribution density of the first display sub-region. Of course, if the resolution of the display substrate can be made higher, the ratio of the pixel distribution density of the second display sub-region to the pixel distribution density of the first display sub-region can be set to be smaller.

[0066] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, the area of ​​the second display sub-region A2 can be smaller than the area of ​​the first display sub-region A1, as shown in Figures 1a to 1i. Of course, in practical application, the area of ​​the second display sub-region can be designed according to the elements installed in the second display sub-region, and is not limited here.

[0067] In general, a pixel unit is provided in a display region, and a pixel unit is provided with a plurality of sub-pixels. A pixel in the embodiment of the present disclosure may be a combination of sub-pixels capable of independently displaying one pixel point, for example, one pixel is one pixel unit. In the display substrate according to the embodiment of the present disclosure, as shown in FIG. 2 to FIG. 13, a first display sub-region A1 may include a plurality of first pixel units 10 and second pixel units 20 adjacent to each other, the first pixel unit 10 may include a first sub-pixel 1 and a second sub-pixel 2, and the second pixel unit 20 may include a third sub-pixel 3 and a second sub-pixel 2. When displaying, the number of pixels in the first display sub-region A1 is equal to the sum of the number of the first pixel units 10 and the number of the second pixel units 20. That is, the pixel arrangement in the first display sub-region A1 is a pantile arrangement, and when displaying, the pixel unit can realize a resolution higher than the physical resolution by utilizing the sub-pixels in the adjacent pixel units.

[0068] The second display sub-region A2 includes a plurality of third pixel units 30, each of which includes a first sub-pixel 1, a second sub-pixel 2 and a third sub-pixel 3 arranged adjacent to each other. When displaying, the number of pixels in the second display sub-region A2 is equal to the number of the third pixel units 30. That is, the physical resolution of the pixels in the second display sub-region A2 is its display resolution. In addition, this embodiment shows only one arrangement manner of the third pixel units 30 in the second display sub-region, but there is no limitation on the distribution density of the third pixel units 30 in the second display sub-region A2.

[0069] Note that a pixel unit may be a combination of sub-pixels that display one pixel point, such as a combination of two, three, four or more of red, green and blue sub-pixels, or a combination of a basic repeating unit or pixel, such as a combination of red, green and blue sub-pixels.

[0070] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, when two pixel units are adjacent to each other, it means that there is no other pixel unit between the two pixel units, and when two sub-pixels are adjacent to each other, it means that there is no other sub-pixel between the two sub-pixels.

[0071] In addition, in the display substrate according to the embodiment of the present disclosure, since the space at the edge of the display sub-region is limited, the arrangement of sub-pixels in the first display sub-region and the arrangement of sub-pixels in the second display sub-region mainly refer to the inside of the display sub-region, and at the edge of the display region, the arrangement of some sub-pixels may differ from other regions, and is not limited here.

[0072] In a specific embodiment, the first, second and third subpixels are generally one of red, green and blue subpixels, respectively. In a display substrate according to an embodiment of the present disclosure, the second subpixel may be a green subpixel, the first subpixel may be a red or blue subpixel, and the third subpixel may be a blue or red subpixel.

[0073] In the display substrate according to the embodiment of the present disclosure, as shown in FIGS. 2 to 5, the sub-pixels in the second display sub-region A2 may be arranged in the same row as some of the sub-pixels in the first display sub-region A1. In this way, the sub-pixels in the second display sub-region A2 are not arranged in a row or column shifted from the sub-pixels in the first display sub-region A1 in the row direction, but correspond to them. In this way, during manufacturing, it is equivalent to omitting some of the sub-pixels in the second display sub-region from the sub-pixel mask that is originally regularly arranged in the entire display region, and the manufacturing process becomes easier. In the display substrate according to the embodiment of the present disclosure, as shown in FIGS. 6 to 13, the sub-pixels in the second display sub-region A2 may be arranged in the same column as some of the sub-pixels in the first display sub-region A1. In this way, the sub-pixels in the second display sub-region A2 are not arranged in a row or column shifted from the sub-pixels in the first display sub-region A1 in the column direction, but correspond to them. In this way, during manufacturing, it is equivalent to omitting some of the subpixels in the second display subregion from the subpixel mask that is originally regularly arranged in the entire display region, and the manufacturing process becomes easier. For example, as shown in Fig. 2, the second display subregion A2 omits half the second subpixels 2 compared to the first display subregion A1, so that its resolution is 1 / 2 that of the first display subregion A1. For example, as shown in Fig. 3, the second display subregion A2 omits 3 / 4 of the second subpixels 2, half of the first subpixels 1, and half of the third subpixels 3 compared to the first display subregion A1, so that its resolution is 1 / 4 that of the first display subregion A1.

[0074] In a display substrate according to an embodiment of the present disclosure, the light-emitting area of ​​one first sub-pixel 1 in the second display sub-region A2 may be approximately equal to the light-emitting area of ​​one first sub-pixel 1 in the first display sub-region A1, as shown in Figures 2 to 8. The light-emitting area of ​​one third sub-pixel 3 in the second display sub-region A2 is approximately equal to the light-emitting area of ​​one third sub-pixel 3 in the first display sub-region A1. As shown in Figures 2 to 7, the light-emitting area of ​​one second sub-pixel 2 in the second display sub-region A2 is approximately equal to the light-emitting area of ​​one second sub-pixel 2 in the first display sub-region A1.

[0075] In a specific embodiment, since the pixel distribution density of the second display sub-region is lower than that of the first display sub-region, the brightness of the second display sub-region is lower than that of the first display sub-region during display, so that obvious dark stripes visible to the human eye are generated at the boundary between the first display sub-region and the second display sub-region. To improve the dark stripe phenomenon, in the display substrate according to the embodiment of the present disclosure, the light-emitting area of ​​one first sub-pixel 1 in the second display sub-region A2 may be larger than that of one first sub-pixel 1 in the first display sub-region A1, the light-emitting area of ​​one second sub-pixel 2 in the second display sub-region A2 may be larger than that of n1 second sub-pixels 2 in the first display sub-region A1, and the light-emitting area of ​​one third sub-pixel 3 in the second display sub-region A2 may be larger than that of one third sub-pixel 3 in the first display sub-region A1, as shown in FIGS. 9 to 13. In other words, by increasing the light-emitting area of ​​the sub-pixels in the second display sub-region A2, the brightness difference between the second display sub-region A2 and the first display sub-region A1 is reduced, thereby improving the dark stripes at the boundary between the second display sub-region A2 and the first display sub-region A1.

[0076] In the display substrate according to the embodiment of the present disclosure, as shown in FIGS. 2 to 5 and 7 to 10, the third pixel units 30 may be arranged in a matrix in the second display sub-region A2.

[0077] In the display substrate according to the embodiment of the present disclosure, as shown in Fig. 6 and Fig. 11 to Fig. 13, the third pixel units 30 may be arranged in a checkerboard pattern in the second display sub-region A2. That is, the third pixel units 30 are arranged in every other column in the row direction and in every other row in the column direction. For example, as shown in Fig. 6, in odd-numbered rows, the third pixel units 30 are arranged in odd-numbered columns, and in even-numbered rows, the third pixel units 30 are arranged in even-numbered columns, so that the third pixel units 30 are evenly distributed in both the row direction and the column direction, and the brightness uniformity in the second display sub-region A2 is ensured. Also, for example, in an odd row, the third pixel unit 30 is disposed at an even column position, and in an even row, the third pixel unit 30 is disposed at an odd column position, so that there is a certain interval between any two third pixel units, and the interval is, for example, the row length of at least one third pixel unit in the row direction and the column length of at least one third pixel unit in the column direction, which is not limited in the embodiments of the present disclosure.

[0078] In the display substrate according to the embodiment of the present disclosure, as shown in FIG. 5 and FIG. 10, in the third pixel unit 30 in the second display sub-region A2, the first sub-pixel 1 and the third sub-pixel 3 may be arranged in the same row, and the second sub-pixel 2 may be arranged in a row adjacent to the row in which the first sub-pixel 1 and the third sub-pixel 3 are arranged, so that the second sub-pixel 2 and the first sub-pixel 1 are arranged in a shifted row. For example, in the same third pixel unit 30, the first sub-pixel 1 and the third sub-pixel 3 are arranged in the first row, and the second sub-pixel 2 is arranged in the second row. In this way, the connecting lines of the centers of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the same third pixel unit 30 form a triangle. In this way, it is possible to avoid the occurrence of horizontal light stripes and dark stripes in the second display sub-region.

[0079] In addition, in the display panel according to the embodiment of the present disclosure, the center of the subpixel is the center of the light-emitting area of ​​the subpixel. Taking an OLED display panel as an example, the subpixel generally includes a stacked structure composed of an anode layer, a light-emitting layer, and a cathode layer, and when displaying, the light-emitting area corresponding to the stacked structure becomes the light-emitting area of ​​the subpixel. In this way, the area occupied by the light-emitting area can be the light-emitting area. Of course, the light-emitting area can also be, for example, the area occupied by the opening area defined by the pixel definition layer, and is not limited here.

[0080] In the display substrate according to the embodiment of the present disclosure, as shown in Figures 5 and 10, in the same third pixel unit 30, the orthogonal projection of the center of the second subpixel 2 on the connecting line L1 between the center of the first subpixel 1 and the center of the third subpixel 3 may be between the center of the first subpixel 1 and the center of the third subpixel 3. For example, the orthogonal projection of the center of the second subpixel 2 on the connecting line L1 between the center of the first subpixel 1 and the center of the third subpixel 3 is at the intersection of the connecting line L1 and the straight line L2. In this way, the distance between the center of the second subpixel 2 and the center of the first subpixel 1 in the third pixel unit 30 is equal to the distance between the center of the second subpixel 2 and the center of the third subpixel 3, so that the three subpixels are arranged in an isosceles triangle shape, and vertical bright and dark stripes are prevented from appearing in the second display sub-region A2.

[0081] In certain embodiments, the distance between the center of the second subpixel 2 and the center of the first subpixel 1 and the distance between the center of the second subpixel 2 and the center of the third subpixel 3 may not be exactly the same, and in an actual process, no deviations will occur due to limitations of process conditions or other factors, such as the placement of wiring or vias, and therefore, as long as the shape, position and relative positional relationship of each subpixel roughly satisfy the above conditions, it falls within the patent scope of the present disclosure.

[0082] In the display substrate according to the embodiment of the present disclosure, as shown in Figures 2 to 4, 6 to 9, and 11 to 13, in the second display sub-region A2, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 of the third pixel unit 30 may be arranged in the same row or in the same column, which is not limited here.

[0083] Of course, in a specific embodiment, in a display substrate according to an embodiment of the present disclosure, as shown in Figures 2 to 4, 6 to 9, and 11 to 13, in the second display sub-region A2, in the third pixel unit 30, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 may be arranged adjacent to each other in the same row or in the same column, which is not limited here. Furthermore, of course, in a specific embodiment, in a display substrate according to an embodiment of the present disclosure, as shown in Figures 2 to 4, 6 to 9, and 11 to 13, in the second display sub-region A2, in the third pixel unit 30, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 may be arranged adjacent to each other in the same row or in the same column, which is not limited here.

[0084] In the display substrate according to the embodiment of the present disclosure, as shown in Figs. 2, 4 to 6, and 12, in the second display sub-region A2, the sub-pixels of two third pixel units 30 adjacent to each other in the row direction may be arranged in the same order in the row direction, and the sub-pixels of two third pixel units 30 adjacent to each other in the column direction may be arranged in the opposite order in the row direction. As a result, the first sub-pixels 1 and the third sub-pixels 3 are arranged alternately in the column direction in the second display sub-region A2, and color bias in the column direction is suppressed. For example, as shown in Fig. 2, taking the third pixel unit 30 in the first row as an example, the first sub-pixels 1, the second sub-pixels 2, and the third sub-pixels 3 of the two adjacent third pixel units 30 are arranged sequentially from left to right in the row direction. Taking the third pixel unit 30 in the first column as an example, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 in the third pixel unit 30 in the odd-numbered rows in the column direction are all arranged sequentially from left to right. The third sub-pixel 3, the second sub-pixel 2, and the first sub-pixel 1 in the third pixel unit 30 in the even-numbered rows are all arranged sequentially from left to right. For example, as shown in FIG. 5, taking the third pixel unit 30 in the first row as an example, the first sub-pixel 1, the third sub-pixel 3, and the second sub-pixel 2 in two adjacent third pixel units 30 in the row direction are all arranged in an inverted triangle shape. Taking the third pixel unit 30 in the first column as an example, the first sub-pixel 1, the third sub-pixel 3, and the second sub-pixel 2 in the third pixel unit 30 in the odd-numbered rows in the column direction are all arranged in an inverted triangle shape. The third sub-pixels 3, the first sub-pixels 1 and the second sub-pixels 2 in the third pixel units 30 in the even-numbered rows are all arranged in an inverted triangle shape.

[0085] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, as shown in Figures 2, 7 to 11, the arrangement order of the sub-pixels in each of the third pixel units in the second display sub-region A2 can be the same.

[0086] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, in the second display sub-region A2, the arrangement order of the sub-pixels in each of the third pixel units 30 in the same column is the same, and the arrangement order of the sub-pixels in each of the third pixel units 30 in two adjacent columns is opposite, as shown in Fig. 13. For example, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 in each of the third pixel units 30 in the odd-numbered columns are all arranged sequentially from left to right. The third sub-pixel 3, the second sub-pixel 2, and the first sub-pixel 1 in each of the third pixel units 30 in the even-numbered columns are all arranged sequentially from left to right.

[0087] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, as shown in Figures 2 to 6 and Figures 8 to 13, within the second display sub-region A2, the shapes of the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 are approximately the same.

[0088] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, in the second display sub-region, the light-emitting area of ​​one second sub-pixel is smaller than or approximately equal to the light-emitting area of ​​one first sub-pixel, and the light-emitting area of ​​one second sub-pixel is smaller than or approximately equal to the light-emitting area of ​​one third sub-pixel. For example, as shown in Figures 2 to 6, in the second display sub-region A2, the light-emitting area of ​​one second sub-pixel 2 is approximately equal to the light-emitting area of ​​one first sub-pixel 1, and the light-emitting area of ​​one second sub-pixel 2 is approximately equal to the light-emitting area of ​​one third sub-pixel 3. As shown in Figures 7 to 13, in the second display sub-region A2, the light-emitting area of ​​one second sub-pixel 2 is smaller than the light-emitting area of ​​one first sub-pixel 1, and the light-emitting area of ​​one second sub-pixel 2 is smaller than the light-emitting area of ​​one third sub-pixel 3. Of course, the relationship between the light-emitting area of ​​one second sub-pixel, the light-emitting area of ​​one first sub-pixel, and the light-emitting area of ​​one third sub-pixel in the second display sub-region may be designed according to actual application scenarios, and is not limited here.

[0089] In a specific embodiment, in a display substrate according to an embodiment of the present disclosure, as shown in Figures 2 to 13, in the second display sub-region A2, the light-emitting area of ​​one first sub-pixel 1 is approximately equal to the light-emitting area of ​​one third sub-pixel 3.

[0090] In the display substrate according to the embodiment of the present disclosure, as shown in FIGS. 2 to 13, in the first display sub-region A1, the first pixel unit 10 and the second pixel unit 20 may be arranged in any one of pantile arrangement manners, and is not limited thereto.

[0091] In a display substrate according to an embodiment of the present disclosure, as shown in Figures 2 to 13, in the first display sub-region A2, the first pixel units 10 and the second pixel units 20 may be arranged alternately in the column direction, and the first pixel units 10 and the second pixel units 20 may be arranged alternately in the row direction.

[0092] In the display substrate according to the embodiment of the present disclosure, as shown in FIG. 2 to FIG. 6, in the first display sub-region A1, the second sub-pixel 2 and the first sub-pixel 1 may be arranged in the same row in the first pixel unit 10, and the second sub-pixel 2 and the third sub-pixel 3 may be arranged in the same row in the second pixel unit 20. In addition, in the case of the first pixel unit 10 and the second pixel unit 20 adjacent to each other along the row direction, the second sub-pixel 2 in the first pixel unit 10 and the second sub-pixel 2 in the second pixel unit 20 are not directly adjacent to each other. For example, in the case of the first pixel unit 10 and the second pixel unit 20 adjacent to each other along the row direction, the third sub-pixel 3 is sandwiched between the second sub-pixel 2 in the first pixel unit 10 and the second sub-pixel in the second pixel unit 20. Of course, the above embodiment may be implemented in other ways, which will not be described in detail here.

[0093] Furthermore, in a display substrate according to an embodiment of the present disclosure, as shown in Figures 2 to 6, within the first display sub-region A2, the light-emitting area of ​​one first sub-pixel 1, the light-emitting area of ​​one second sub-pixel 2, and the light-emitting area of ​​one third sub-pixel 3 may be approximately the same.

[0094] 7 to 13, in the first display sub-region A1, in the first pixel unit 10, the second sub-pixel 2 and the first sub-pixel 1 may be arranged in a shifted row and a shifted column, and in the second pixel unit 20, the second sub-pixel 2 and the third sub-pixel 3 may be arranged in the same row. The first pixel unit 10 and the second pixel unit 20 adjacent to each other in the column direction are grouped into one pixel group 100, and in the same pixel group 100, the second sub-pixel 2 in the first pixel unit 10 and the third sub-pixel 3 in the second pixel unit 20 are arranged in the same row, and the second sub-pixel 2 in the first pixel unit 10 and the second sub-pixel 2 in the second pixel unit 20 are in the same column.

[0095] 7 to 12, in the display substrate according to the embodiment of the present disclosure, in the same pixel group 100, two second sub-pixels 2 are arranged adjacent to each other along the column direction, and the two second sub-pixels 2 are arranged symmetrically with respect to the row direction, that is, the two second sub-pixels 2 in the same pixel group 100 are arranged in a mirrored manner. Furthermore, in the first display sub-region A1, when the second sub-pixels 2 are green sub-pixels, the light-emitting area of ​​the two second sub-pixels 2 is smaller than the light-emitting area of ​​one first sub-pixel 1, and the light-emitting area of ​​the two second sub-pixels 2 is smaller than the area of ​​one third sub-pixel 3, because the light-emitting efficiency of the green sub-pixel is higher than the light-emitting efficiency of the sub-pixels of other colors.

[0096] In the display substrate according to the embodiment of the present disclosure, as shown in FIGS. 2 to 13, in the first display sub-region, the sub-pixels in each of the first pixel units 10 may be arranged in the same order, and the sub-pixels in each of the second pixel units 20 may be arranged in the same order. For example, as shown in FIGS. 2 to 6, the first sub-pixel 1 and the second sub-pixel 2 in each of the first pixel units 10 are arranged in sequence from left to right. The third sub-pixel 3 and the second sub-pixel 2 in each of the second pixel units 20 are arranged in sequence from left to right. As shown in FIGS. 7 to 13, the third sub-pixel 3 and the second sub-pixel 2 in each of the second pixel units 20 are arranged in sequence from left to right. The first sub-pixel 1 and the second sub-pixel 2 in each of the first pixel units 10 are arranged in sequence from the upper left to the lower right.

[0097] In the display substrate according to the embodiment of the present disclosure, in the first display sub-region, the light-emitting area of ​​one second sub-pixel may be equal to or smaller than the light-emitting area of ​​one first sub-pixel, and the light-emitting area of ​​one second sub-pixel may be equal to or smaller than the light-emitting area of ​​one third sub-pixel. For example, as shown in Figs. 2 to 6, in the first display sub-region A1, the light-emitting area of ​​one second sub-pixel 2 is approximately equal to the light-emitting area of ​​one first sub-pixel 1, and the light-emitting area of ​​one second sub-pixel 2 is approximately equal to the light-emitting area of ​​one third sub-pixel 3. As shown in Figs. 7 to 13, in the first display sub-region A1, the light-emitting area of ​​one second sub-pixel 2 is smaller than the light-emitting area of ​​one first sub-pixel 1, and the light-emitting area of ​​one second sub-pixel 2 is smaller than the light-emitting area of ​​one third sub-pixel 3. This is because, in the first display sub-region A1, the number of first sub-pixels 1 is the same as the number of third sub-pixels 3, while the number of second sub-pixels 2 is one time that of the first sub-pixels 1, so the light-emitting area of ​​the second sub-pixels 2 can be made smaller.

[0098] In a display substrate according to an embodiment of the present disclosure, as shown in FIGS. 2 to 13, within the first display sub-region A1, the light-emitting area of ​​one first sub-pixel 1 may be approximately equal to the light-emitting area of ​​one third sub-pixel 3.

[0099] Specifically, in the display substrate according to the embodiment of the present disclosure, in the first display sub-region, the first sub-pixel, the second sub-pixel and the third sub-pixel are not limited in shape and may be regular or irregular, and in certain embodiments, a regular shape is generally preferred for ease of process implementation.

[0100] Specifically, in the display substrate according to the embodiment of the present disclosure, in the second display sub-region, the first sub-pixel, the second sub-pixel and the third sub-pixel are not limited in shape and may be regular or irregular, and in certain embodiments, a regular shape is generally preferred for ease of process implementation.

[0101] In a display substrate according to an embodiment of the present disclosure, as shown in Figures 7 to 12, in the same pixel group 100, the shapes of the first sub-pixel 1 and the third sub-pixel 3 may be the same, and the shape of a combination of two second sub-pixels 2 may be the same as the shape of the first sub-pixel 1 or the third sub-pixel 3.

[0102] In the display substrate according to the embodiment of the present disclosure, the shape of the first sub-pixel may be at least one of a rectangle and a hexagon. For example, as shown in Figs. 2 to 6, the shape of the first sub-pixel 1 is rectangular in both the first display sub-region A1 and the second display sub-region A2. As shown in Figs. 7 to 12, the shape of the first sub-pixel 1 is hexagonal in both the first display sub-region A1 and the second display sub-region A2. Of course, the shape of the first sub-pixel may be a rounded pattern shape, an elliptical shape, or the like, and is not limited thereto.

[0103] In a display substrate according to an embodiment of the present disclosure, as shown in Figures 7 to 12, in the first display sub-region A1, the first sub-pixel 1 and the third sub-pixel 3 may both have a hexagonal shape, and the shape obtained by combining two second sub-pixels 2 may be a single hexagon.

[0104] In the display substrate according to the embodiment of the present disclosure, the shape of at least one of the first and third subpixels in the second display subregion may be substantially the same as the shape of the first subpixel in the first display subregion. For example, as shown in FIGS. 2 to 13, the shape of the first subpixel 1 in the second display subregion A2 is substantially the same as the shape of the first subpixel 1 in the first display subregion A1. As shown in FIGS. 2 to 13, the shape of the third subpixel 3 in the second display subregion A2 is substantially the same as the shape of the first subpixel 1 in the first display subregion A1. As shown in FIGS. 2 to 13, the shapes of the first subpixel 1 and the third subpixel 3 in the second display subregion A2 are substantially the same as the shape of the first subpixel 1 in the first display subregion A1.

[0105] In a display substrate according to an embodiment of the present disclosure, the shape of one type of subpixel in the first and second subpixels in the first display subregion may be substantially the same as the shape of the second subpixel in the second display subregion. For example, as shown in Figures 2 to 6 and 8 to 13, the shape of the first subpixel 1 in the first display subregion A1 is substantially the same as the shape of the second subpixel 2 in the second display subregion A2. As shown in Figure 7, the shape of the second subpixel 2 in the first display subregion A1 is substantially the same as the shape of the second subpixel 2 in the second display subregion A2.

[0106] In addition, when the shapes of the first sub-pixels 1, the second sub-pixels 2, and the third sub-pixels 3 in the same sub-region are substantially the same, the light-emitting areas of the three types of sub-pixels may be different. For example, as shown in FIG. 10, in the second display sub-region A2, the light-emitting area of ​​the second sub-pixel 2 is smaller than that of the first sub-pixel 1, and the light-emitting area of ​​the second sub-pixel 2 is smaller than that of the third sub-pixel 3. In practical application, the light-emitting areas may be set according to the embodiment, for example, blue sub-pixel light-emitting area>red sub-pixel light-emitting area>green sub-pixel light-emitting area, or blue sub-pixel light-emitting area>green sub-pixel light-emitting area>red sub-pixel light-emitting area, and are not limited thereto.

[0107] In addition, in the display substrate according to the embodiment of the present disclosure, the shape of the sub-pixel refers to the shape of the light-emitting region of the sub-pixel.

[0108] In a display substrate according to an embodiment of the present disclosure, as shown in Figures 7 to 12, in a first display sub-region A1, when the second sub-pixels 2 are green sub-pixels, the light-emitting area of ​​the two second sub-pixels 2 may be smaller than the area of ​​one first sub-pixel 1, and the light-emitting area of ​​the two second sub-pixels 2 may be smaller than the area of ​​one third sub-pixel 3, because the light-emitting efficiency of the green sub-pixel is higher than the light-emitting efficiency of sub-pixels of other colors.

[0109] In a display substrate according to an embodiment of the present disclosure, as shown in Figures 7 to 12, in the second display sub-region A2, when the second sub-pixel 2 is a green sub-pixel, the light-emitting area of ​​the second sub-pixel 2 may be smaller than the light-emitting area of ​​the first sub-pixel 1, and the light-emitting area of ​​the second sub-pixel 2 may be smaller than the light-emitting area of ​​the third sub-pixel 3.

[0110] In a particular embodiment, the display substrate according to the embodiment of the present disclosure generally scans rows by rows in the first display sub-region when displaying. For example, as shown in FIG. 15, when the first display sub-region A1 and the second display sub-region A2 are adjacent to each other along the row direction, the gate driving circuits GOA1-GOA5 output signals by rows, while only GOA1, GOA3 and GOA5 output signals are needed in the second display sub-region A2.

[0111] Based on the same inventive concept, an embodiment of the present disclosure further provides a driving method for driving any one of the above display substrates, as shown in FIG. 14, the driving method includes: S1301 receiving original image data; determining a target grayscale value for each subpixel in the first display subregion based on an initial grayscale value of the subpixel corresponding to the subpixel in the original image data, and determining a target grayscale value for each subpixel in the second display subregion based on a light-emitting area of ​​the subpixel, a pixel distribution density of the second display subregion, and an initial grayscale value of the subpixel corresponding to the region in which the subpixel is located in the original image data; and driving each sub-pixel in the display substrate to display based on its target grayscale value S1303.

[0112] Specifically, for a sub-pixel in the first display sub-region, when one physical pixel in the first display sub-region corresponds to one pixel in the image data, the target grayscale value of the sub-pixel is generally its initial grayscale value. When the number of physical pixels in the first display region is smaller than the number of pixels in the image data, a sub-pixel borrowing relationship occurs during display, so that one sub-pixel can correspond to two or more pixels in the image data, and therefore the target grayscale value of the sub-pixel needs to be converted based on the initial grayscale value of the sub-pixel corresponding to it in the original image data.

[0113] For each sub-pixel in the second display sub-region, since the resolution is low, one physical pixel corresponds to one pixel in the image data when displaying, and generally, the target grayscale value of the sub-pixel is its initial grayscale value. However, in this case, since the resolution of the second display sub-region is low, if the display is directly based on the initial grayscale value, there is a problem that the brightness in the second display sub-region and the first display sub-region will be significantly different, resulting in obvious dark stripes at the boundary between the second display sub-region and the first display sub-region. To solve this problem, the driver according to the embodiment of the present disclosure adjusts the grayscale of the sub-pixel in the second display sub-region based on the light-emitting area of ​​the sub-pixel and the pixel distribution density of the second display sub-region. For example, the larger the light-emitting area of ​​the sub-pixel, the higher the brightness of the entire second display sub-region, and the more sub-pixels distributed in the second display sub-region, the higher the brightness of the entire second display sub-region.

[0114] Generally, one physical pixel includes at least three sub-pixels, RGB.

[0115] In a particular embodiment, within the first display sub-region, when the pixel arrangement is a Pantile arrangement, the first and third sub-pixels are borrowed, so that when displayed, one first sub-pixel generally corresponds to two pixels in the image data, one third sub-pixel generally corresponds to two pixels in the image data, and the second sub-pixel is not borrowed, so that one second sub-pixel generally corresponds to one pixel in the image data.

[0116] Therefore, in the driving method according to the embodiment of the present disclosure, for each sub-pixel in the first display sub-region, the step of determining the target grayscale value of the sub-pixel specifically includes: For the first sub-pixel, the formula

[0117]

number

[0118] (wherein Gamma represents the gamma value of the display substrate, and x1 and x2 are the initial grayscale values ​​of the two first sub-pixels corresponding to the first sub-pixel in the original image data, respectively), determining a corresponding target grayscale value X; The target grayscale value Y of the second sub-pixel is equal to the initial grayscale value y of one second sub-pixel corresponding to the second sub-pixel in the original image data; For the third sub-pixel, the formula

[0119]

number

[0120] (where z1 and z2 are the initial grayscale values ​​of the two third sub-pixels corresponding to the third sub-pixel in the original image data, respectively).

[0121] In a specific embodiment, the brightness of the second display sub-region can be appropriately adjusted to improve the dark stripes that occur at the boundary between the second display sub-region and the first display sub-region. The brightness is proportional to both the light-emitting area and the pixel distribution density.

[0122] Therefore, in the driving method according to the embodiment of the present disclosure, for each sub-pixel in the second display sub-region, the step of determining the target grayscale value of the sub-pixel specifically includes: For a subpixel, the formula

[0123]

number

[0124] (wherein n is an integer between 1 and N, N is the number of subpixels corresponding to the subpixel in the original image data, Gamma represents the gamma value of the display substrate, s represents the ratio of the light-emitting area of ​​the subpixel in the first display region to the light-emitting area of ​​the subpixel in the second display subregion, ρ represents the ratio of the pixel distribution density in the first display subregion to the pixel distribution density in the second display subregion, k is an error adjustment coefficient, and x n is the initial grayscale value of the n-th sub-pixel corresponding to the sub-pixel in the original image data.

[0125] In a specific embodiment, the error adjustment coefficient k can be adjusted according to the actual display effect of the display substrate, and is not limited here.

[0126] In a specific embodiment, there are m third pixel units per unit area in the second display sub-region, and j pixels in the image data of the corresponding region, so that one third pixel unit corresponds to j / m pixels in the image data, i.e., N=j / m. When determining the target grayscale of a sub-pixel, the target grayscale value of the sub-pixel can be determined based on any one or more of the N sub-pixels corresponding thereto. For example, when N=4, a sub-pixel can be determined based on the initial grayscale value of any one or more of the four sub-pixels corresponding thereto in the image data. For example, when determining based on the initial grayscale value of one of the sub-pixels,

[0127]

number

[0128] (where x i represents the initial grayscale value of one of the four subpixels. For example, when determining based on the initial grayscale values ​​of two of the subpixels,

[0129]

number

[0130] (where x1 and x2 represent the initial grayscale values ​​of any two of the four subpixels.) For example, when determining based on the initial grayscale values ​​of three of the subpixels,

[0131]

number

[0132] (where x1, x2, and x3 represent the initial grayscale values ​​of any three subpixels among the four subpixels). For example, when determining based on the initial grayscale values ​​of the four subpixels,

[0133]

number

[0134] (where x1, x2, x3 and x4 represent the initial grayscale values ​​of the four sub-pixels).

[0135] Based on the same inventive concept, the embodiment of the present disclosure further provides a display device including any one of the above display substrates according to the embodiment of the present disclosure. The display device may be any product or component having a display function, such as a mobile phone, a tablet, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. For the implementation of the display device, reference may be made to the embodiment of the above display substrate, and redundant description will be omitted here.

[0136] The display device according to the embodiment of the present disclosure may further include a driver for driving the display substrate, and the driver of the display substrate may be, for example, an integrated circuit (IC), an external central processing unit (CPU), a microprocessor, etc. receiving original image data; determining, for each subpixel in the first display subregion, a target grayscale value for the subpixel based on an initial grayscale value of a corresponding subpixel in the original image data; and determining, for each subpixel in the second display subregion, a target grayscale value for the subpixel based on a light-emitting area of ​​the subpixel, a pixel distribution density of the second display subregion, and an initial grayscale value of a subpixel corresponding to a region in which the subpixel is located in the original image data; Each sub-pixel in the display substrate is driven to display based on the target grayscale value.

[0137] In the display device according to the embodiment of the present disclosure, the driver may determine, for each sub-pixel in the first display sub-region, a target grayscale value of the sub-pixel by the following method, specifically: For a first sub-pixel in the first display region, the formula

[0138]

number

[0139] (wherein Gamma represents the gamma value of the display substrate, and Gamma is generally 2.2; and x1 and x2 are the initial grayscale values ​​of the two first sub-pixels corresponding to the first sub-pixel in the original image data, respectively), to determine the corresponding target grayscale value X; a target grayscale value Y of the second sub-pixel is equal to an initial grayscale value y of one second sub-pixel corresponding to the second sub-pixel in the original image data; For the third sub-pixel in the first display region, the formula

[0140]

number

[0141] (where z1 and z2 are the initial grayscale values ​​of the two third sub-pixels corresponding to the third sub-pixel in the original image data, respectively), and determine the corresponding target grayscale value Z.

[0142] In a specific embodiment, the brightness of the second display sub-region can be appropriately adjusted to improve the dark stripes that occur at the boundary between the second display sub-region and the first display sub-region. The brightness is proportional to both the light-emitting area and the pixel distribution density.

[0143] Therefore, in the display device according to the embodiment of the present disclosure, the driver may determine, for each sub-pixel in the second display sub-region, a target grayscale value of the sub-pixel by the following method, specifically: For a subpixel, the formula

[0144]

number

[0145] (wherein n is an integer between 1 and N, N is the number of subpixels corresponding to the subpixel in the original image data, Gamma represents the gamma value of the display substrate, s represents the ratio of the light-emitting area of ​​the subpixel in the first display region to the light-emitting area of ​​the subpixel in the second display subregion, ρ represents the ratio of the pixel distribution density in the first display subregion to the pixel distribution density in the second display subregion, k is an error adjustment coefficient, and x n is the initial grayscale value of the n-th sub-pixel corresponding to the sub-pixel in the original image data. ) to determine the corresponding target grayscale value X.

[0146] In a specific embodiment, the error adjustment coefficient k can be adjusted according to the actual display effect of the display substrate, and is not limited here.

[0147] Specifically, the driving method according to the embodiment of the present disclosure can be referred to the implementation of the driver in the display device, and will not be described in detail here.

[0148] In a specific embodiment, in a display device according to an embodiment of the present disclosure, the driver integrates all algorithms of the target grayscale values ​​of the sub-pixels in each sub-region in an IC. During display, the driver determines a target grayscale value corresponding to each sub-pixel according to the received image data, and drives the display substrate to display according to the target grayscale value.

[0149] In addition, before displaying based on the target grayscale value, the display substrate usually performs Demura algorithm processing to improve brightness uniformity. The specific Demura algorithm can be referred to the prior art, and will not be described in detail here.

[0150] Based on the same inventive concept, an embodiment of the present disclosure further provides a high-precision metal mask for manufacturing any one of the above display substrates according to an embodiment of the present disclosure, the high-precision metal mask including a plurality of opening areas corresponding to the shape and position of the first sub-pixel, the second sub-pixel or the third sub-pixel.

[0151] In a specific embodiment, the sub-pixel generally includes an anode layer, an emitting layer, and a cathode layer, and the emitting layer is generally deposited using the high-precision metal mask. Taking the display substrate shown in FIG. 12 as an example, in the high-precision metal mask for forming the first sub-pixel, as shown in FIG. 16, the opening region 01 corresponds to the shape and position of the emitting layer of the first sub-pixel 1 of the display substrate. And, due to process limitations, the area of ​​the opening region 01 is generally larger than the area of ​​the corresponding emitting layer. The principles of the high-precision metal mask for forming the second sub-pixel and the high-precision metal mask for forming the third sub-pixel are similar to those of the first sub-pixel, and will not be described in detail here.

[0152] In the display substrate, the driving method thereof, the display device, and the high-precision metal mask according to the embodiments of the present disclosure, the display region is configured as a first display sub-region with a large pixel distribution density (i.e., high resolution) and a second display sub-region with a small pixel distribution density (i.e., low resolution). Since the pixel distribution density in the second display sub-region is small, a device such as a camera can be installed in the second display sub-region, that is, the screen occupancy rate of the display substrate is improved by a method of improving the light transmittance of the screen by reducing the local pixel distribution density. Furthermore, when the display substrate is driven, the light-emitting area and pixel distribution density of the sub-pixel in the second display sub-region adjust the grayscale value of the sub-pixel in the second display sub-region, thereby compensating for the large difference in brightness between the second display sub-region and the first display sub-region caused by the uneven pixel distribution density between the first display sub-region and the second display sub-region, thereby reducing the dark stripes existing at the boundary between the second display sub-region and the first display sub-region, and realizing a uniform display on the entire screen.

[0153] Of course, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Therefore, if such modifications and modifications of the present disclosure fall within the scope of the claims of the present disclosure and the equivalent techniques, the present disclosure is intended to include these changes and modifications.

Claims

1. A display substrate, The display area of ​​the display substrate is a first display sub-region; a second display sub-area in which the camera element is correspondingly disposed; a pixel distribution density in the first display sub-region is greater than a pixel distribution density in the second display sub-region; The first display sub-region includes a plurality of first pixel units and a plurality of second pixel units adjacent to each other, the first pixel units including a first sub-pixel and a second sub-pixel, and the second pixel units including a third sub-pixel and a second sub-pixel; The second display sub-region includes a plurality of third pixel units, each of the third pixel units including a first sub-pixel, a second sub-pixel and a third sub-pixel that are adjacent to each other; Each of the sub-pixels corresponds to a respective light-emitting area, the light-emitting area including an anode layer, a light-emitting layer and a cathode layer; a distance between adjacent first pixel units and second pixel units in the first display sub-region is smaller than a distance between adjacent third pixel units in the second display sub-region; A display substrate, wherein the distance between two adjacent third pixel units in the same row of the second display sub-region is greater than the row-directional size of one third pixel unit, and / or the distance between two adjacent third pixel units in the same column of the second display sub-region is greater than the column-directional size of one third pixel unit.

2. The display substrate of claim 1 , wherein the first display sub-regions and the second display sub-regions are arranged in a row direction, or the first display sub-regions and the second display sub-regions are arranged along a column direction.

3. The first display sub-region is disposed to surround the second display sub-region; The display substrate of claim 1 , wherein the second display sub-region is one of a circular shape, a water drop shape, a rectangular shape, and a trapezoidal shape.

4. the first display sub-region and the second display sub-region form a continuous display region, and the shape of the display region is rectangular; the second display sub-region is located in a corner of the display region; The display substrate of claim 1 , wherein an area of ​​the second display sub-region is smaller than an area of ​​the first display sub-region.

5. The display substrate of claim 1 , wherein a minimum distance between adjacent sub-pixels in each pixel unit in the first viewing sub-region is greater than a minimum distance between adjacent sub-pixels in each pixel unit in the second viewing sub-region.

6. subpixels in the second displaying subregion are in the same row as some of the subpixels in the first displaying subregion; The display substrate of claim 1 , wherein subpixels in the second viewing subregion are in the same column as some of the subpixels in the first viewing subregion.

7. a light-emitting area of ​​one of the first sub-pixels in the second display sub-region is larger than a light-emitting area of ​​one of the first sub-pixels in the first display sub-region; a light-emitting area of ​​one of the second sub-pixels in the second display sub-region is larger than a light-emitting area of ​​one of the second sub-pixels in the first display sub-region; The display substrate of claim 1 , wherein a light-emitting area of ​​one of the third sub-pixels in the second display sub-region is larger than a light-emitting area of ​​one of the third sub-pixels in the first display sub-region.

8. In the second display sub-region, the third pixel units are repeatedly arranged in a row direction and a column direction; Alternatively, in the second display sub-region, a plurality of the third pixel units are repeatedly arranged in a row direction, and the third pixel units in two adjacent rows are arranged in a staggered pattern.

9. In the second display sub-region, the first sub-pixel, the second sub-pixel, and the third sub-pixel in the third pixel unit are sequentially arranged in the same row; Alternatively, in the third pixel unit in the second display sub-region, two sub-pixels are in the same row and another sub-pixel is in another row.

10. 2. The display substrate of claim 1, wherein in the third pixel units in the second display sub-region, the centers of the first sub-pixels of the third pixel units in the same row are on the same line, the centers of the second sub-pixels of the third pixel units in the same row are on the same line, and the centers of the third sub-pixels of the third pixel units in the same row are on the same line.

11. In the second display sub-region, the arrangement order of the sub-pixels in each of the third pixel units in the same row is the same; The display substrate of claim 1 , wherein in the second display sub-region, the arrangement order of the sub-pixels in each of the third pixel units in the same column is the same.

12. In the second display sub-region, the first sub-pixel, the second sub-pixel, and the third sub-pixel have a rectangular shape, 2. The display substrate of claim 1, wherein in the second display sub-region, an emission area of ​​one of the second sub-pixels is smaller than or equal to an emission area of ​​one of the first sub-pixels, and an emission area of ​​one of the second sub-pixels is smaller than or equal to an emission area of ​​one of the third sub-pixels.

13. 2 . The display substrate of claim 1 , wherein in the first display sub-region, the first pixel units and the second pixel units are alternately arranged in a column direction, and the first pixel units and the second pixel units are alternately arranged in a row direction.

14. 2. The display substrate of claim 1, wherein a distance between adjacent first and second pixel units in the same row of the first display sub-region is smaller than the row-direction size of one first pixel unit and smaller than the row-direction size of one second pixel unit.

15. The display substrate of claim 1 , wherein the third pixel units in the second display sub-region are arranged in a plurality of rows and columns, with adjacent rows being staggered and adjacent columns being staggered.

16. The display substrate of claim 1 , wherein center lines of three sub-pixels of the third pixel unit form a triangle, and one side of the triangle is parallel to a row or column direction.

17. The display substrate of claim 1 , wherein three sub-pixels in a third pixel unit in the second display sub-region are located in two adjacent rows.

18. 2. The display substrate of claim 1, wherein in the second display sub-region, first sub-pixels in a same row are arranged at equal intervals, first sub-pixels in a same column are arranged at equal intervals, second sub-pixels in a same row are arranged at equal intervals, second sub-pixels in a same column are arranged at equal intervals, third sub-pixels in a same row are arranged at equal intervals, and third sub-pixels in a same column are arranged at equal intervals.

19. The display substrate of claim 13 , wherein, in the first display sub-region, the sub-pixels in each of the first pixel units have the same arrangement order, and the sub-pixels in each of the second pixel units have the same arrangement order.

20. A display device comprising the display substrate according to claim 1 .

Images