Display panel and display device

Abstract

The display panel and the display device are provided, which comprise a first display substrate (301) and a second display substrate (303); the first display substrate (301) is laminated on one side of the second display substrate (303), the first display substrate (301) comprises a first display area (305), the second display substrate (303) comprises a second display area (307), the first display substrate (301) comprises a plurality of edge pixel units (309) which overlap with edges (306) of at least one side of the first display area (305), each edge pixel unit (309) is divided into a first area (312) and a second area (313) by the edge (306) of the first display area (305), and the ratio of the area of a pixel opening of each edge pixel unit (309) to the area of the first area (312) ranges from (90%, 110%).

Description

Technical Field

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

[0002] In order to improve the contrast of the display panel, the stacked screen (BOE Dual Cell, BD Cell) technology has emerged; BD Cell adopts a double-layer LCD screen design, that is, the grayscale display and the color display are stacked together and used as a whole. The contrast of BD Cell can be greater than 1000000:1, which makes the stacked screen display quality have high contrast, high resolution and reliability, low cost and power consumption, and is becoming more and more popular with users. As display panels are widely used in various scenarios, the shapes of display panels are becoming more and more diverse. As a result, the display area of ​​the grayscale display is not parallel to the edge of the grayscale display (i.e., a special-shaped screen), and the display area of ​​the color display is not parallel to the edge of the color display (i.e., a special-shaped screen).

[0003] Taking a special-shaped color display screen as an example, the size of a single shielding layer of a pixel unit is usually the same as the size of the pixel unit. Figure 1 As shown in FIG. 1 , in order to ensure the area of ​​the display area 105 of the color display screen 101, the pixel units 103 that overlap with the edge 102 of the display area 105 of the color display screen 101 are usually not covered with the shielding layer 106. As a result, the non-display area 104 of the color display screen 101 also has multiple pixel openings 107 of different sizes. Figure 2 As shown, when the stacked screen 201 displays an image, the edge 102 of the stacked screen 201 has a jagged feel, resulting in a poor display effect. Summary of the Invention

[0004] By utilizing one or more embodiments of the present disclosure, the problem in the prior art that when a stacked screen displays an image, the edges of the stacked screen have a jagged feel and the display effect is poor is solved.

[0005] In a first aspect, the present disclosure provides a display panel comprising: a first display substrate and a second display substrate; the first display substrate is stacked on one side of the second display substrate, the first display substrate comprises a first display area, the second display substrate comprises a second display area, and the orthographic projection of the first display area on the second display substrate is located within the second display area; the first display substrate comprises a plurality of edge pixel units overlapping with the edge of at least one side of the first display area, each edge pixel unit being divided into a first area and a second area by the edge of the first display area, wherein the first area is located within the first display area, the second area is located outside the first display area, and the ratio of the area of ​​the pixel opening of each edge pixel unit to the area of ​​the first area is in the range of (90%, 110%); wherein the edge of the first display area is not parallel to any side of the pixel unit of the first display substrate.

[0006] In a possible implementation manner, the area of ​​the pixel opening of each edge pixel unit is equal to the area of ​​the first region.

[0007] In one possible implementation, each edge pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the ratio of any two of the areas of the pixel openings of the red sub-pixel, the green sub-pixel, and the blue sub-pixel is in the range of (90%, 110%).

[0008] In a possible implementation, each edge pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and areas of pixel openings of the red sub-pixel, the green sub-pixel, and the blue sub-pixel are equal.

[0009] In a possible implementation, positions of the pixel openings of the plurality of edge pixel units are all located on one side or in the center of the edge pixel unit.

[0010] In a possible implementation, the shape of the pixel opening of each edge pixel unit is rectangular, circular, or elliptical.

[0011] In a possible implementation, each edge pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel;

[0012] The geometric centers of any two pixel openings of the red sub-pixel, the green sub-pixel, and the blue sub-pixel are not on the same straight line.

[0013] In a possible implementation, the first display substrate includes:

[0014] A driving device layer, a light emitting device layer and a color filter layer, wherein the light emitting device layer is arranged on one side of the driving device layer, and the color filter layer is arranged on the side of the light emitting device layer away from the driving device layer, wherein:

[0015] The driving device layer includes a plurality of pixel driving circuits, the light emitting device layer includes a plurality of light emitting devices, and each pixel driving circuit is electrically connected to a light emitting device to form a sub-pixel;

[0016] The color filter layer includes a blocking layer and a color filter unit, and the multiple sub-pixels include red sub-pixels, green sub-pixels, and blue sub-pixels of each edge pixel unit, and the blocking layer corresponding to the red sub-pixel, green sub-pixel, and blue sub-pixel of each edge pixel unit is provided with a pixel opening divided into a first area and a second area by the edge of the first display area, and each pixel opening corresponding to each edge pixel unit is provided with a color filter unit.

[0017] In a possible implementation, a distance between any edge of the first display area and an edge of an adjacent second display area is greater than a width of a pixel unit on the second display substrate.

[0018] In a possible implementation, the distance between any edge of the first display area and the edge of the adjacent second display area satisfies the following relationship:

[0019]

[0020] Wherein, b is the fitting accuracy between the first display area and the second display area, and b is greater than 1.5 mm and less than 2.5 mm. a is the distance between any edge of the first display area and the edge of the adjacent second display area.

[0021] In a possible implementation, the first display substrate is a color display substrate, and the second display substrate is a grayscale display substrate.

[0022] In a possible implementation, the display panel is a liquid crystal display panel.

[0023] In a second aspect, the present disclosure further provides a display device, comprising the display panel provided in the first aspect of the present disclosure.

[0024] The present disclosure provides a display panel and a display device. Since the first display substrate includes a plurality of edge pixel units that overlap with the edge of at least one side of the first display area, and each edge pixel unit is divided into a first area and a second area by the edge of the first display area, the first area is located within the first display area. Since the ratio of the area of ​​the pixel opening of each edge pixel unit to the area of ​​the first area is in the range of (90%, 110%), when the display panel is turned on, the user visually sees that the display area and the non-display area of ​​the display panel are divided by the edge of the first display area, and the edge of the first display area has less visual jaggedness, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 A top view of the color display screen;

[0027] Figure 2 To include Figure 1 A schematic diagram of the display effect when the stacked screen of the color display is lit;

[0028] Figure 3 A cross-sectional view of a display panel provided in an embodiment of the present disclosure;

[0029] Figure 4 A schematic structural diagram of a display panel provided in an embodiment of the present disclosure;

[0030] Figure 5 One of the top views of the first display substrate provided in an embodiment of the present disclosure;

[0031] Figure 6 To include Figure 5 A schematic diagram of the display effect of the display panel of the first display substrate;

[0032] Figure 7 A second top view of the first display substrate provided in an embodiment of the present disclosure;

[0033] Figure 8 A third top view of the first display substrate provided in an embodiment of the present disclosure;

[0034] Figure 9 A fourth top view of the first display substrate provided in an embodiment of the present disclosure;

[0035] Figure 10 A schematic structural diagram of a first display substrate provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0037] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments of the present disclosure. These figures are not drawn to scale, and for the purpose of clarity, certain details are exaggerated and certain details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0038] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, it can be directly on the other layer / element or an intervening layer / element may be present therebetween. In addition, if a layer / element is "on" another layer / element in one orientation, it may be "below" the other layer / element when the orientation is reversed.

[0039] To improve the contrast of display panels, stacked screen technology has emerged, which involves stacking a grayscale display and a color display together to function as a single unit. Taking a special-shaped color display as an example, since the shielding layer of a pixel unit is usually the same size as the pixel unit, to ensure the display area of ​​the color display, the pixel units that overlap with the edge of the color display's display area are usually not covered with the shielding layer. As a result, when the stacked screen displays images, the edges of the stacked screen appear jagged, resulting in poor display quality.

[0040] Based on the above technical problems, the inventive concept of the present disclosure is to make the ratio of the area of ​​the pixel opening of the edge pixel units of the edge pixel units overlapping with the edge of at least one side of the first display area to the area of ​​the first area be in the range of (90%, 110%).

[0041] In this way, when the display panel is turned on, the user visually sees the edge of the first display area as dividing the display area and non-display area of ​​the display panel, and the edge of the first display area has low visual jaggedness, thereby improving the display effect of the display panel.

[0042] Below, the technical solution of the present disclosure and how the technical solution of the present disclosure solves the above-mentioned technical problems are described in detail with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0043] The embodiment of the present disclosure provides a display panel 304, including a first display substrate 301 and a second display substrate 303. In some embodiments, as Figure 3As shown, the first display substrate 301 is stacked on one side of the second display substrate 303. For example, the first display substrate 301 and the second display substrate 303 can be fixed by gluing. Figure 3 As shown, an optically clear adhesive layer 302 (OCA) is disposed between the first display substrate 301 and the second display substrate 303 to bond the first display substrate 301 and the second display substrate 303 together.

[0044] It can be understood that the display panel 304 composed of the first display substrate 301 and the second display substrate 303 is a stacked screen (BDCell). When the geometric shapes of the first display area 305 of the first display substrate 301 are all irregular shapes, the first display substrate 301 is a special-shaped display substrate. Figure 4 As shown, the display panel 304 composed of the first display substrate 301 and the second display substrate 303 is also a special-shaped display panel (ie, a special-shaped screen). Figure 4 The first display area 305 of the first display substrate 301 is only one implementation of the display panel 304 provided in the embodiment of the present disclosure. Figure 4 The geometric shape of the first display area 305 of the first display substrate 301 as shown in FIG can also be other irregular shapes, which are merely examples. It is understood that when the edge 306 of the first display area 305 is not parallel to any side of the pixel unit of the first display substrate 301, the geometric shape of the first display area 305 of the first display substrate 301 is an irregular shape.

[0045] In the disclosed embodiment, when the first display substrate 301 is a color display substrate (i.e., a color cell) and the second display substrate 303 is a grayscale display substrate (mono cell), the first display substrate 301 can be located above the second display substrate 303. In this way, the color display substrate located above focuses on precise color control and faithfully reproduces colors, while the second display substrate 303 located below focuses on fine dimming, presenting high contrast and dark field details.

[0046] In some embodiments, as Figure 4 As shown, the first display substrate 301 includes a first display area 305 , the second display substrate 303 includes a second display area 307 , and the orthographic projection of the first display area 305 on the second display substrate 303 is located in the second display area 307 .

[0047] like Figure 5As shown, the first display substrate 301 includes a plurality of edge pixel units 309 that overlap with at least one edge 306 of the first display area 305. For example, when the first display area 305 is a parallelogram, all four sides of the parallelogram are edges 306 on one side of the first display area 305, and the pixel units of the first display substrate 301 that overlap with any side of the parallelogram are edge pixel units 309. It will be understood that the first display substrate 301 includes a plurality of pixel units, and the pixel units located at the edge 306 of the first display area 305 of the first display substrate 301 can be referred to as edge pixel units 309.

[0048] Each edge pixel unit 309 is divided into a first area 312 and a second area 313 by an edge 306 of the first display area 305. In some embodiments, the first area 312 is located within the first display area 305, and the second area 313 is located outside the first display area 305 (i.e., the second area 313 is located in the non-display area 310 of the first display substrate 301).

[0049] It is understandable that the size of the pixel opening 311 of the pixel unit of the first display substrate 301 is generally determined by the opening size of the shielding layer 308 located above the pixel unit of the first display substrate 301. Since the shielding layer 308 of each pixel unit on the first display substrate 301 is generally rectangular and the same size as the pixel unit of the first display substrate 301, when the geometric shape of the first display area 305 of the first display substrate 301 is irregular, if the pixel unit overlapping the edge 306 of the first display area 305 is covered with a shielding layer 308 of the same size as the pixel unit, the area of ​​the first display area 305 cannot be guaranteed. If the pixel unit overlapping the edge 306 of the first display area 305 is not covered with the shielding layer 308, the non-display area 310 of the first display substrate 301 will also have multiple pixel openings 311 of different sizes, resulting in a visual jagged effect to the user when the first display area 305 is illuminated.

[0050] In the embodiment of the present disclosure, Figure 5 As shown, a pixel opening 311 can be provided in each edge pixel unit 309, and the ratio of the area of ​​the pixel opening 311 of the edge pixel unit 309 to the area of ​​the first region 312 is in the range of (90%, 110%). For example, the ratio of the area of ​​the pixel opening of the edge pixel unit 309 to the area of ​​the first region 312 can be 95%, 100%, or 105%, etc., which is not limited here.

[0051] The ratio of the area of ​​the pixel opening 311 of the edge pixel unit 309 to the area of ​​the pixel opening of each edge pixel unit 309 to the area of ​​the first region 312 is in the range of (90%, 110%). Figure 6 As shown, when the display panel 304 is turned on, the user visually sees that the display area and non-display area of ​​the display panel 304 are divided by the edge 306 of the first display area 305, and the edge 306 of the first display area 305 has very little visual jaggedness, thereby improving the display effect of the display panel 304.

[0052] It should be noted that when the ratio of the area of ​​the pixel opening of the edge pixel unit 309 to the area of ​​the first region 312 is 100%, that is, the area of ​​the pixel opening 311 of each edge pixel unit 309 is equal to the area of ​​the first region 312, the edge 306 of the first display area 305 has no visual jaggedness, further improving the display effect of the display panel 304.

[0053] In some embodiments, from Figure 5 As can be seen from FIG, the geometric shape of each pixel unit on the first display substrate 301 can be a rectangle. Figure 5 As shown, the ratio of any two of the pixel openings 311 of the red sub-pixel 501, the green sub-pixel 502, and the blue sub-pixel 503 of each edge pixel unit 309 is in the range of (90%, 110%). For example, the ratio of any two of the pixel openings 311 of the red sub-pixel 501, the green sub-pixel 502, and the blue sub-pixel 503 of each edge pixel unit 309 can be in the range of 95%, 100%, or 105%, etc., which is not limited here.

[0054] In this way, when the display panel 304 is lit, the color of the light emitted by each edge pixel unit 309 can be made uniform and with little color deviation. Similarly, the areas of the pixel openings 311 of the red sub-pixel 501, the green sub-pixel 502, and the blue sub-pixel 503 of the plurality of pixel units completely located within the first display area 305 are equal. In this way, when the display panel 304 is lit, the color of the light emitted by each edge pixel unit 309 can be made uniform and without color deviation. In some embodiments, when the pixel openings 311 of the red sub-pixel 501, the green sub-pixel 502, and the blue sub-pixel 503 of each edge pixel unit 309 are equal, the color of the light emitted by each edge pixel unit 309 is further made uniform and without color deviation.

[0055] It should be noted that, Figure 5As shown, the pixel opening 311 of each edge pixel unit 309 is rectangular in shape, and the pixel opening 311 of the red sub-pixel 501, the pixel opening 311 of the green sub-pixel 502, and the pixel opening 311 of the blue sub-pixel 503 are also rectangular. The pixel opening 311 of the red sub-pixel 501, the pixel opening 311 of the green sub-pixel 502, and the pixel opening 311 of the blue sub-pixel 503 are spliced ​​together to form the rectangular pixel opening 311 of the edge pixel unit 309.

[0056] Alternatively, as Figure 7 As shown, the geometric centers of the pixel openings 311 of any two of the pixel openings 311 of the red sub-pixel 501 , the green sub-pixel 502 , and the blue sub-pixel 503 may not be on the same straight line.

[0057] In some embodiments, the shape of the pixel opening 311 of each edge pixel unit 309 may also be circular, elliptical, or even irregular, which is not limited herein.

[0058] In some embodiments, taking the shape of the pixel opening 311 of each edge pixel unit 309 as a rectangle as an example, Figure 5 As shown, the positions of the pixel openings 311 of the plurality of edge pixel units 309 are all located in the middle of the edge pixel unit 309. Alternatively, the positions of the pixel openings 311 of the plurality of edge pixel units 309 are located on one side of the edge pixel unit 309. Figure 8 As shown, the positions of the pixel openings 311 of the plurality of edge pixel units 309 are located at the top of the edge pixel unit 309. Figure 9 As shown, the positions of the pixel openings 311 of the plurality of edge pixel units 309 may also be located at the bottom of the edge pixel unit 309 .

[0059] It is understandable that when the pixel openings 311 of the plurality of edge pixel units 309 are all located on one side or in the center of the edge pixel unit 309 , the visual jaggedness of the edge 306 of the first display area 305 can be further reduced, thereby improving the display effect.

[0060] Typically, there is an alignment deviation between the edge 306 of the first display substrate 301 and the edge 306 of the second display substrate 303, and the alignment deviation is less than 0.2 mm. Therefore, in some embodiments, the distance between any edge 306 of the first display area 305 and the adjacent edge 306 of the second display area 307 is greater than the width of a pixel unit on the second display substrate 303, and the width of the pixel unit on the second display substrate 303 is greater than the width of the pixel unit on the first display substrate 301.

[0061] For example, the distance between any edge 306 of the first display area 305 and the adjacent edge 306 of the second display area 307 satisfies the following relationship: In some embodiments, b is the fitting accuracy between the first display area 305 and the second display area 307, b is greater than 1.5 mm and less than 2.5 mm (for example, b can be 1.6 mm, 2 mm, and 2.4 mm, etc., which are not limited here), then a is greater than 2.26 mm and less than 3.53 mm, and a is the distance between any edge 306 of the first display area 305 and the adjacent edge 306 of the second display area 307.

[0062] In this way, the orthographic projection of each edge pixel unit 309 of the first display substrate 301 on the second display substrate 303 can be ensured to fall within the second display area 307 of the second display substrate 303, so that the second display area 307 can dim each edge pixel unit 309, ensuring the display effect. Furthermore, since the function of the second display area 307 is to dim each pixel unit with a pixel opening 311 on the first display substrate 301, it is not necessary to design a pixel opening for each edge pixel unit on the second display area 307, saving process steps and process costs.

[0063] In some embodiments, see Figure 10 The embodiment of the present disclosure also provides a specific structure of the first display substrate 301. Figure 10 As shown, the first display substrate 301 includes a base layer 1001 , a driving device layer 1002 , a light emitting device layer 1003 , a color filter layer 1004 , and a protective cover 1005 .

[0064] In some embodiments, the base layer 1001 may be, but is not limited to, a flexible base layer 1001. The flexible base layer 1001 may include a polyethylene terephthalate (PET) substrate, a polyethylene naphthalate diformic acid glycol ester (PEN) substrate, or a colorless polyimide (CPI). It is understood that the base layer 1001 is used to support and protect the entire first display substrate 301.

[0065] The driver device layer 1002 is disposed on one side of the base layer 1001. In some embodiments, the driver device layer 1002 includes multiple pixel driver circuits. The pixel driver circuits may be, but are not limited to, thin film transistors (TFTs). For example, the embodiments of the present disclosure do not impose too many restrictions on the type of TFTs. For example, the TFTs may include oxide TFTs and / or polysilicon TFTs.

[0066] The light emitting device layer 1003 is disposed on one side of the base layer 1001. The light emitting device layer 1003 includes a plurality of light emitting devices. Each pixel driving circuit is electrically connected to a light emitting device. It should be noted that the electrically connected pixel driving circuit and light emitting device constitute a sub-pixel.

[0067] In some embodiments, each light-emitting device includes an anode, a light-emitting functional layer, and a cathode, wherein the anode is closer to the substrate layer 1001 than the cathode. In some embodiments, the anode is a reflective electrode and the cathode is a transparent electrode. The light-emitting functional layer may include an organic light-emitting material layer, and at least one of a hole injection layer, a hole transport layer, and an electron blocking layer disposed between the cathode and the organic light-emitting material layer; and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer disposed between the anode and the organic light-emitting material layer. The specific configuration is determined based on actual needs and is not limited in the present disclosure.

[0068] Still Figure 10 As shown, the color filter layer 1004 is disposed on a side of the light-emitting device layer 1003 away from the base layer 1001. In some embodiments, the color filter layer 1004 includes a shielding layer 308 and a color filter unit 1006. Within the first display region 305 of the first display substrate 301, the shielding layer 308 is provided with a plurality of pixel openings 311 of a predetermined size that face the light-emitting devices, and the color filter unit 1006 is located within the pixel openings 311. It should be noted that when the color filter unit 1006 is configured to transmit red light, it corresponds to the red sub-pixel 501; when the color filter unit 1006 is configured to transmit red light, it corresponds to the green sub-pixel 502; and when the color filter unit 1006 is configured to transmit blue light, it corresponds to the blue sub-pixel 503.

[0069] In some embodiments, as Figure 10As shown, the blocking layer 308 corresponding to the red sub-pixel 501, the green sub-pixel 502, and the blue sub-pixel 503 of the edge pixel unit 309 is provided with a pixel opening 311, and the edge pixel unit 309 is divided into a first area 312 and a second area 313 by the edge 306 of the first display area 305. The first area 312 is located within the first display area 305, and the second area 313 is located outside the first display area 305. In the non-display area 310 of the first display substrate 301, the color filter layer 1004 includes a blocking layer 308, and the blocking layer 308 is not provided with a pixel opening 311.

[0070] The protective cover 1005 is used to extract light and seal the first display substrate 301 to prevent external air and water vapor from corroding the components inside the first display substrate 301. In some embodiments, the protective cover 1005 can be, but is not limited to, a glass cover.

[0071] It should be noted that the structure of the second display substrate 303 is similar to that of the first display substrate 301 , and will not be described in detail herein.

[0072] In some embodiments, the present disclosure further provides a display device including the display panel provided in the above embodiments. In some embodiments, the display device may be a vehicle-mounted display screen or an advertising screen, etc., which is not limited here.

[0073] While the above description does not provide detailed technical details regarding the patterning of each layer, those skilled in the art will appreciate that various technical means can be employed to form layers, regions, and the like in desired shapes. Furthermore, those skilled in the art may devise methods that differ from those described above to achieve the same structure. Furthermore, while each embodiment has been described separately, this does not mean that the measures in each embodiment cannot be advantageously combined.

[0074] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0075] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A display panel, comprising: a first display substrate and a second display substrate; The first display substrate is stacked on one side of the second display substrate, the first display substrate includes a first display area, the second display substrate includes a second display area, and the orthographic projection of the first display area on the second display substrate is located within the second display area; The first display substrate includes a plurality of edge pixel units overlapping with an edge of at least one side of the first display area, each of the edge pixel units being divided into a first area and a second area by the edge of the first display area, wherein the first area is located within the first display area, the second area is located outside the first display area, and a ratio of an area of ​​a pixel opening of each edge pixel unit to an area of ​​the first area is in a range of (90%, 110%), wherein the edge of the first display area is not parallel to any side of the pixel unit of the first display substrate; and a distance between any edge of the first display area and an adjacent edge of the second display area satisfies the following relationship: Wherein, b is the fitting accuracy between the first display area and the second display area, and b is greater than 1.5 mm and less than 2.5 mm, and a is the distance between any edge of the first display area and the adjacent edge of the second display area.

2. The display panel according to claim 1, wherein: The area of ​​the pixel opening of each edge pixel unit is equal to the area of ​​the first region.

3. The display panel according to claim 1, wherein: Each edge pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the ratio of any two of the areas of the pixel openings of the red sub-pixel, the green sub-pixel, and the blue sub-pixel is in the range of (90%, 110%).

4. The display panel according to claim 3, wherein: Each of the edge pixel units includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the areas of the pixel openings of the red sub-pixel, the green sub-pixel, and the blue sub-pixel are equal.

5. The display panel according to claim 1, wherein: The positions of the pixel openings of the plurality of edge pixel units are all located at one side or in the center of the edge pixel unit. The display panel according to claim 1 , wherein: The shape of the pixel opening of each edge pixel unit is rectangular, circular, or elliptical.

7. The display panel according to claim 1, wherein: Each of the edge pixel units includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel; Geometric centers of any two of the pixel openings of the red sub-pixel, the green sub-pixel, and the blue sub-pixel are not on the same straight line.

8. The display panel according to claim 1, wherein: The first display substrate includes A driving device layer, a light emitting device layer and a color filter layer, wherein the light emitting device layer is arranged on one side of the driving device layer, and the color filter layer is arranged on a side of the light emitting device layer away from the driving device layer, wherein: The driving device layer includes a plurality of pixel driving circuits, the light emitting device layer includes a plurality of light emitting devices, and each of the pixel driving circuits is electrically connected to one of the light emitting devices to form a sub-pixel; The color film layer includes a blocking layer and a color filter unit, the multiple sub-pixels include red sub-pixels, green sub-pixels, and blue sub-pixels of each edge pixel unit, and the blocking layer corresponding to the red sub-pixel, green sub-pixel, and blue sub-pixel of each edge pixel unit is provided with a pixel opening divided by the edge of the first display area into the first area and the second area, and each pixel opening corresponding to each edge pixel unit is provided with the color filter unit.

9. The display panel according to claim 1, wherein: A distance between any edge of the first display area and an adjacent edge of the second display area is greater than a width of a pixel unit on the second display substrate.

10. The display panel according to any one of claims 1 to 9, wherein: The first display substrate is a color display substrate, and the second display substrate is a grayscale display substrate.

11. The display panel according to any one of claims 1 to 9, wherein: The display panel is a liquid crystal display panel.

12. A display device, characterized in that: The display panel comprises any one of claims 1 to 11.

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