Display panel and display device

Abstract

The application relates to a display panel and a display device. The display panel comprises a substrate having a first bending area; a plurality of first pixel units arranged on one side of the substrate and spaced apart in the first bending area; and at least one first stress release structure arranged on the side of the substrate close to the first pixel units and located in the first bending area; wherein the orthographic projection of the first stress release structure on the substrate does not overlap with the orthographic projection of the first pixel units on the substrate.

Description

Technical Field

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

[0002] The integration of automotive center console screens is increasing, with large, integrated screens becoming a growing trend. Among these, flexible OLED screens offer advantages over LCD screens, including thinness, flexibility, wide color gamut, wide viewing angles, and low power consumption, making them more suitable for the often curved surfaces of in-vehicle environments. Currently, improving the reliability of in-vehicle flexible display devices is a key research focus in this field. Summary of the Invention

[0003] Therefore, it is necessary to provide a display panel and display device that can improve reliability.

[0004] In a first aspect, embodiments of this application provide a display panel, including:

[0005] A substrate having a first bending region;

[0006] Multiple first pixel units are disposed on one side of the substrate and arranged at intervals in the first curved area;

[0007] At least one first stress relief structure is disposed on the side of the substrate near the first pixel unit and located in the first bending region;

[0008] Wherein, the orthographic projection of the first stress relief structure on the substrate does not overlap with the orthographic projection of the first pixel unit on the substrate.

[0009] In one embodiment, the orthographic projection of the first stress relief structure on the substrate is located between the orthographic projections of two adjacent first pixel units on the substrate.

[0010] Optionally, the first bending region includes a plurality of first sub-regions; the display panel includes a plurality of first stress relief structures, each first stress relief structure corresponding to a first pixel unit, and each first sub-region having a first pixel unit and a first stress relief structure corresponding to the first pixel unit;

[0011] Optionally, the plurality of first pixel units are arranged in rows along a first direction and in columns along a second direction intersecting the first direction, wherein both the first direction and the second direction are perpendicular to the thickness direction of the substrate;

[0012] The orthographic projection of the first stress relief structure on the substrate is located between the orthographic projections of two adjacent first pixel units on the substrate along the first direction.

[0013] In one embodiment, the substrate further has a first flat region, the first flat region and the first curved region are arranged along the first direction, and the first flat region is connected to the first curved region;

[0014] The display panel further includes a plurality of second pixel units, which are disposed on the side of the substrate near the first pixel unit and are arranged at intervals in the first flat area;

[0015] Optionally, the first flat area includes a plurality of second sub-regions, and the plurality of second pixel units are arranged in the plurality of second sub-regions in a one-to-one correspondence;

[0016] Optionally, all the second pixel units are arranged in rows along the first direction and in columns along the second direction;

[0017] Optionally, both the first pixel unit and the second pixel unit include a first sub-pixel, a second sub-pixel, and a third sub-pixel; the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively used to emit light of different colors;

[0018] Wherein, the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the second pixel unit is equal to the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the first pixel unit.

[0019] In one embodiment, the first pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; in the same first pixel unit, the first sub-pixel and the second sub-pixel are arranged at intervals along the second direction, and the third sub-pixel is located on one side of the first sub-pixel and the second sub-pixel along the first direction;

[0020] Optionally, in all first pixel units, all first sub-pixels are arranged in rows along the first direction and in columns along the second direction;

[0021] Along the first direction, the distance between any two adjacent first sub-pixels is equal to a first value; along the second direction, the distance between any two adjacent first sub-pixels is equal to a second value.

[0022] Optionally, in all the first pixel units, all the second sub-pixels are arranged in rows along the first direction and in columns along the second direction;

[0023] Along the first direction, the distance between any two adjacent second sub-pixels is equal to the third value; along the second direction, the distance between any two adjacent second sub-pixels is equal to the fourth value.

[0024] Optionally, in all the first pixel units, all the third sub-pixels are arranged in rows along the first direction and in columns along the second direction;

[0025] Along the first direction, the distance between any two adjacent third sub-pixels is equal to the fifth value; along the second direction, the distance between any two adjacent third sub-pixels is equal to the sixth value.

[0026] In one embodiment, all the first pixel units are arranged in rows along the first direction and in columns along the second direction; in the same row of first pixel units, the distance between the opposite sides of the first pixel units in the first column and the first pixel units in the last column is between 0.3cm and 1cm.

[0027] In one embodiment, the substrate further has a second curved region, which is located on the side of the first straight region away from the first curved region and is connected to the first straight region.

[0028] The display panel also includes:

[0029] Multiple third pixel units are disposed on the side of the substrate near the first pixel unit and are arranged at intervals in the second curved area;

[0030] At least one second stress relief structure is disposed on the side of the substrate near the first pixel unit and located in the second bending region;

[0031] Wherein, the orthographic projection of the second stress relief structure on the substrate does not overlap with the orthographic projection of the third pixel unit on the substrate.

[0032] Optionally, the bending center of the first bending region and the bending center of the second bending region are located on opposite sides of the substrate.

[0033] In one embodiment, the bending center of the first bending region is located on the side of the substrate closer to the first pixel unit, and the first stress relief structure is configured as a groove; the bending center of the second bending region is located on the side of the substrate away from the third pixel unit, and the second stress relief structure is configured as a protrusion.

[0034] Alternatively, the bending center of the first bending region is located on the side of the substrate away from the first pixel unit, and the first stress relief structure is constructed as a protrusion; the bending center of the second bending region is located on the side of the substrate closer to the third pixel unit, and the second stress relief structure is constructed as a groove.

[0035] Optionally, the display panel further includes a pixel defining layer disposed on one side of the substrate, the pixel defining layer having a plurality of pixel openings, and the sub-pixels of the first pixel unit, the second pixel unit and the third pixel unit being disposed at the pixel openings;

[0036] At least one of the first stress relief structure and the second stress relief structure is disposed on the pixel definition layer;

[0037] Optionally, the display panel further includes an array film layer disposed on one side of the substrate, wherein the first pixel unit, the second pixel unit and the third pixel unit are all disposed on the side of the array film layer away from the substrate;

[0038] At least one of the first stress relief structure and the second stress relief structure is disposed on the array film layer.

[0039] In one embodiment, the orthographic projection of the second stress relief structure onto the substrate is located between the orthographic projections of two adjacent third pixel units onto the substrate.

[0040] Optionally, the second bending region includes a plurality of third sub-regions, and the display panel includes a plurality of second stress relief structures, each of the second stress relief structures corresponding to a third pixel unit. Each third sub-region contains a third pixel unit and a second stress relief structure corresponding to the third pixel unit.

[0041] Optionally, the plurality of third pixel units are arranged in rows along the first direction and in columns along the second direction;

[0042] The orthographic projection of the second stress relief structure on the substrate is located between the orthographic projections of two adjacent third pixel units on the substrate along the first direction.

[0043] Optionally, the third pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the third pixel unit is equal to the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the first pixel unit;

[0044] Optionally, the third pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; in the same third pixel unit, the first sub-pixel and the second sub-pixel are arranged at intervals along the second direction, and the third sub-pixel is located on one side of the first sub-pixel and the second sub-pixel along the first direction;

[0045] Optionally, in all third pixel units, all first sub-pixels are arranged in rows along the first direction and in columns along the second direction;

[0046] Along the first direction, the distance between any two adjacent first sub-pixels is equal to a first value; along the second direction, the distance between any two adjacent first sub-pixels is equal to a second value.

[0047] Optionally, in all third pixel units, all second sub-pixels are arranged in rows along the first direction and in columns along the second direction;

[0048] Along the first direction, the distance between any two adjacent second sub-pixels is equal to the third value; along the second direction, the distance between any two adjacent second sub-pixels is equal to the fourth value.

[0049] Optionally, in all third pixel units, all the third sub-pixels are arranged in rows along the first direction and in columns along the second direction;

[0050] Along the first direction, the distance between any two adjacent third sub-pixels is equal to the fifth value; along the second direction, the distance between any two adjacent third sub-pixels is equal to the sixth value.

[0051] Optionally, all the third pixel units are arranged in rows along the first direction and in columns along the second direction; in the same row of third pixel units, the distance between the opposite sides of the third pixel units in the first column and the third pixel units in the last column is between 0.3cm and 1cm.

[0052] In one embodiment, in the first pixel units of the same row of the first curved region, the distance between the opposite sides of the first pixel units in the first column and the first pixel units in the last column is a first distance.

[0053] In the same row of the second pixel units in the first flat area, the distance between the two opposite sides of the second pixel units in the first column and the second pixel units in the last column is the second distance;

[0054] In the same row of the third pixel units in the second curved region, the distance between the sides of the third pixel units in the first column and the third pixel units in the last column that are opposite to each other is the third distance;

[0055] The ratio of the first distance to the sum of the first distance, the second distance, and the third distance is between 0.005 and 0.015; and / or the ratio of the third distance to the sum of the first distance, the second distance, and the third distance is between 0.005 and 0.015.

[0056] Secondly, embodiments of this application provide a display device, including the display panel of the first aspect.

[0057] The display panel and display device provided in this application embodiment, by providing a first stress relief structure in the first bending region and ensuring that the orthographic projection of the first stress relief structure on the substrate does not overlap with the orthographic projection of the first pixel unit on the substrate, achieve the following: Firstly, when the first bending region of the display panel is subjected to vibration or impact, it helps to release stress, improving the vibration and impact resistance of the display panel, reducing the probability of display abnormalities caused by vibration or impact, and improving the reliability of the display panel and display device; secondly, the first stress relief structure can be reasonably arranged in the first bending region, avoiding its influence on the light emission of the first pixel unit, which is beneficial to ensuring the display effect in the first bending region. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application.

[0060] Figure 2 for Figure 1 A partial planar schematic diagram of the display panel is shown.

[0061] Figure 3 for Figure 1 The diagram shows a partial cross-sectional view of the first curved area of ​​the display panel.

[0062] Figure 4 for Figure 1 The diagram shows a partial cross-sectional view of the second curved area of ​​the display panel.

[0063] Figure 5Afor Figure 2 A partial planar schematic diagram of the first bending region.

[0064] Figure 5B for Figure 2 A partial planar schematic diagram of the first straight section.

[0065] Figure 5C for Figure 2 A partial planar schematic diagram of the second bending zone.

[0066] Figure 6A for Figure 1 A planar schematic diagram of the first stress relief structure of the display panel shown.

[0067] Figure 6B for Figure 1 Another planar schematic diagram of the first stress relief structure of the display panel shown.

[0068] Figure 6C for Figure 1 Another planar schematic diagram of the first stress relief structure of the display panel shown.

[0069] Explanation of reference numerals in the attached figures:

[0070] 10. Display panel; 11. Substrate; 11a. First curved area; 11a1. First sub-area; 11b. First flat area; 11b1. Second sub-area; 11c. Second curved area; 11c1. Third sub-area; 11d. Second flat area; 11e. Third flat area; 12a. First pixel unit; 12b. Second pixel unit; 12c. Third pixel unit; 121. First sub-pixel; 122. Second sub-pixel; 123. Third sub-pixel; 131. First stress relief structure; 132. Second stress relief structure; 14. Pixel defining layer. Detailed Implementation

[0071] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0072] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, this does not indicate any order, quantity, or importance, but is merely used to distinguish different components. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Words such as “comprising” or “including” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0074] In the field of automotive displays, car displays need to be used for extended periods in high-temperature and high-vibration environments, resulting in a harsh working environment. Furthermore, because the vibration and impact resistance of flexible OLED automotive displays is worse at the bending points with the smallest radius of curvature compared to other locations, these displays are prone to display abnormalities. Currently, improving the reliability of flexible automotive display devices has become a key research focus in this field.

[0075] This application provides a display panel and a display device. By providing a first stress relief structure in a first bending region, and ensuring that the orthographic projection of the first stress relief structure on the substrate does not overlap with the orthographic projection of the first pixel unit on the substrate, the following advantages are achieved: Firstly, when the first bending region of the display panel is subjected to vibration or impact, it helps to release stress, improving the vibration and impact resistance of the display panel, reducing the probability of display abnormalities caused by vibration or impact, and improving the reliability of the display panel and the display device. Secondly, the first stress relief structure can be reasonably arranged in the first bending region, avoiding its influence on the light emission of the first pixel unit, which helps to ensure the display effect in the first bending region.

[0076] Firstly, referring to Figure 1 and Figure 2As shown, this application embodiment provides a display panel 10, which may be an organic light-emitting diode (OLED) display panel 10, a liquid crystal display (LCD), a mini light-emitting diode (MiniLED) display panel 10, a micro light-emitting diode (Micro LED) display panel 10, or a quantum dot light-emitting diode (QLED) display panel 10.

[0077] Specifically, the display panel 10 includes a substrate 11, a plurality of first pixel units 12a, and at least one first stress relief structure 131. The substrate 11 has a first bending region 11a. The plurality of first pixel units 12a are disposed on one side of the substrate 11 and are arranged at intervals in the first bending region 11a. The first stress relief structure 131 is disposed on the side of the substrate 11 near the first pixel units 12a and is located in the first bending region 11a.

[0078] Specifically, the orthographic projection of the first stress relief structure 131 on the substrate 11 does not overlap with the orthographic projection of the first pixel unit 12a on the substrate 11. That is, the first stress relief structure 131 and the first pixel unit 12a are staggered.

[0079] It should be noted here that the substrate 11 and other film layers on the substrate 11 located in the first bending region 11a are in a bent state. The first bending region 11a can be the bending position where the radius of curvature of the substrate 11 (display panel 10) is the smallest. The first pixel unit 12a refers to the smallest repeating unit of pixel arrangement within the first bending region 11a.

[0080] By providing a first stress relief structure 131 in the first bending region 11a, when the first bending region 11a of the display panel 10 is subjected to vibration or impact, the first stress relief structure 131 helps to release stress in this area, improving the shock resistance and impact resistance of the display panel 10, reducing the probability of display abnormalities caused by vibration or impact in this area, and improving the reliability of the display panel 10 and the display device. By ensuring that the orthographic projection of the first stress relief structure 131 on the substrate 11 does not overlap with the orthographic projection of the first pixel unit 12a on the substrate 11, the first stress relief structure 131 can be rationally arranged in the first bending region 11a, avoiding its influence on the light emission of the first pixel unit 12a, thus helping to ensure the display effect of the first bending region 11a.

[0081] In one embodiment, the orthographic projection of the first stress relief structure 131 onto the substrate 11 is located between the orthographic projections of two adjacent first pixel units 12a onto the substrate 11. Thus, by arranging the first stress relief structure 131 appropriately in the first bending region 11a, it is possible to avoid the first stress relief structure 131 affecting the light emission of the first pixel units 12a, which is beneficial to ensuring the display effect of the first bending region 11a.

[0082] In one embodiment, a first stress relief structure 131 is provided between any two adjacent first pixel units 12a. This allows for the provision of a larger number of first stress relief structures 131 in the first bending region 11a, thereby further improving the seismic and impact resistance of the first bending region 11a.

[0083] In one embodiment, reference Figure 5A As shown, the first bending region 11a includes a plurality of first sub-regions 11a1. The display panel 10 includes a plurality of first stress relief structures 131, each first stress relief structure 131 corresponding to a first pixel unit 12a. Each first sub-region 11a1 contains a first pixel unit 12a and a first stress relief structure 131 corresponding to the first pixel unit 12a.

[0084] Here, the first sub-region 11a1 can be understood as a unit area region, or it can be considered as a pitch. The above arrangement is equivalent to arranging a first pixel unit 12a and a first stress relief structure 131 within a pitch. In this way, on the one hand, it helps to make the first pixel unit 12a evenly distributed, ensuring consistent display effects at each position; on the other hand, when the display panel 10 is subjected to vibration or impact, the stress at the bending position with a small radius of curvature (such as the first bending region 11a) can be released, preventing film layer breakage and thus avoiding abnormal image display.

[0085] In one embodiment, a plurality of first pixel units 12a are arranged in rows along a first direction X and in columns along a second direction Y intersecting the first direction X. Both the first direction X and the second direction Y are perpendicular to the thickness direction of the substrate 11. The orthographic projection of the first stress relief structure 131 on the substrate 11 is located between the orthographic projections of two adjacent first pixel units 12a along the first direction X on the substrate 11.

[0086] In this way, on the one hand, it is beneficial to set a larger number of first stress relief structures 131 in the first bending zone 11a, thereby further improving the seismic performance and impact resistance of the first bending zone 11a; on the other hand, it can also make the first stress relief structures 131 arranged more evenly in the first bending zone 11a, so that the stress relief performance of the first bending zone 11a is more uniform.

[0087] In one embodiment, the substrate 11 further includes a first flat region 11b, the first flat region 11b and the first curved region 11a are arranged along a first direction X, and the first flat region 11b is connected to the first curved region 11a. The display panel 10 also includes a plurality of second pixel units 12b, which are disposed on the side of the substrate 11 near the first pixel unit 12a and are arranged at intervals in the first flat region 11b.

[0088] It should be noted that the substrate 11 located in the first flat region 11b can be completely flat or approximately flat. The substrate 11 located in the first flat region 11b can have a slight bend.

[0089] In one embodiment, reference Figure 5B As shown, the first flat region 11b includes multiple second sub-regions 11b1, and multiple second pixel units 12b are arranged one-to-one in the multiple second sub-regions 11b1. The second pixel unit 12b refers to the smallest repeating unit of pixel arrangement within the first flat region 11b.

[0090] Here, the second sub-region 11b1 can be understood as a unit area region, or it can be considered as a pitch. In one example, the first sub-region 11a1 and the second sub-region 11b1 are both a pitch, that is, the area of ​​the second sub-region 11b1 is equal to the area of ​​the first sub-region 11a1. Further, the second pixel unit 12b can be considered as a "conventional pixel unit" arranged within a pitch, and the first pixel unit 12a can be considered as a "first differentiated pixel unit" different from the "conventional pixel unit". Further, the region where the first pixel unit 12a is located (the first curved region 11a) is also equivalent to the first pixel difference region. The embodiments of this application are equivalent to differentiating the pixel units within the first curved region 11a, that is, adding a first stress relief structure 131 to the unit area region of the first curved region 11a, thereby improving the seismic resistance and impact resistance of the first curved region 11a.

[0091] In one embodiment, all second pixel units 12b are arranged in rows along the first direction X and in columns along the second direction Y. It is understood that the arrangement of the second pixel units 12b can be the same as the arrangement of the first pixel units 12a. This can reduce the display difference between the first flat area 11b and the first curved area 11a, thus improving the display effect.

[0092] In one embodiment, both the first pixel unit 12a and the second pixel unit 12b include a first sub-pixel 121, a second sub-pixel 122, and a third sub-pixel 123; the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 are used to emit light of different colors. The area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the second pixel unit 12b is equal to the area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the first pixel unit 12a.

[0093] That is, the area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the first pixel unit 12a is equal to n:m:z, and the area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the second pixel unit 12b is also equal to n:m:z. This reduces the brightness difference between the first flat area 11b and the first curved area 11a, which is beneficial for improving the display effect.

[0094] It should be noted that, in order to arrange the first pixel unit 12a and the first stress relief structure 131 within the second sub-region 11b1, the area of ​​the first sub-pixel 121 in the first pixel unit 12a can be smaller than the area of ​​the first sub-pixel 121 in the second pixel unit 12b, the area of ​​the second sub-pixel 122 in the first pixel unit 12a can be smaller than the area of ​​the second sub-pixel 122 in the second pixel unit 12b, and the area of ​​the third sub-pixel 123 in the first pixel unit 12a can be smaller than the area of ​​the third sub-pixel 123 in the second pixel unit 12b. This allows for the reservation of space for the first stress relief structure 131 within the second sub-region 11b1.

[0095] It is understood that the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can be one of a red sub-pixel, a blue sub-pixel, and a green sub-pixel, respectively. Of course, in some other embodiments, the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 can also be sub-pixels that emit light of other colors besides red, green, and blue, such as white or yellow. This application embodiment does not limit this.

[0096] In one embodiment, the first pixel unit 12a includes a first sub-pixel 121, a second sub-pixel 122, and a third sub-pixel 123. Within the same first pixel unit 12a, the first sub-pixel 121 and the second sub-pixel 122 are arranged at intervals along a second direction Y, and the third sub-pixel 123 is located on one side of the first sub-pixel 121 and the second sub-pixel 122 along a first direction X. This allows for better display performance within the first curved region 11a. It is understood that the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the first pixel unit 12a can also be arranged in other ways, and this embodiment does not limit this arrangement.

[0097] In one embodiment, in all the first pixel units 12a, all the first sub-pixels 121 are arranged in rows along a first direction X and in columns along a second direction Y. Along the first direction X, the distance between any two adjacent first sub-pixels 121 is equal to a first value, that is, the distance between any two adjacent first sub-pixels 121 is equidistant along the first direction X. Along the second direction Y, the distance between any two adjacent first sub-pixels 121 is equal to a second value, that is, the distance between any two adjacent first sub-pixels 121 is equidistant along the second direction Y.

[0098] This helps to make the first sub-pixels 121 in the first curved area 11a more evenly distributed, and helps to keep the display effect of each position in the first curved area 11a consistent.

[0099] In one embodiment, in all the first pixel units 12a, all the second sub-pixels 122 are arranged in rows along the first direction X and in columns along the second direction Y. Along the first direction X, the distance between any two adjacent second sub-pixels 122 is equal to a third value, that is, the distance between any two adjacent second sub-pixels 122 is equal along the first direction X. Along the second direction Y, the distance between any two adjacent second sub-pixels 122 is equal to a fourth value, that is, the distance between any two adjacent second sub-pixels 122 is equal along the second direction Y.

[0100] This helps to make the second sub-pixels 122 in the first curved area 11a more evenly distributed, and helps to keep the display effect of each position in the first curved area 11a consistent.

[0101] Optionally, the first value is equal to the third value, and the second value is equal to the fourth value. This facilitates the arrangement of the third sub-pixels 123.

[0102] In one embodiment, in all the first pixel units 12a, all the third sub-pixels 123 are arranged in rows along the first direction X and in columns along the second direction Y. Along the first direction X, the distance between any two adjacent third sub-pixels 123 is equal to a fifth value, that is, the distance between any two adjacent third sub-pixels 123 is equal along the first direction X. Along the second direction Y, the distance between any two adjacent third sub-pixels 123 is equal to a sixth value, that is, the distance between any two adjacent third sub-pixels 123 is equal along the second direction Y.

[0103] This helps to make the third sub-pixel 123 in the first curved area 11a more evenly distributed, and helps to keep the display effect of each position in the first curved area 11a consistent.

[0104] It should be noted that the specific values ​​of the first, second, third, fourth, fifth, and sixth values ​​are not limited in the embodiments of this application.

[0105] In one embodiment, all the first pixel units 12a are arranged in rows along a first direction X and in columns along a second direction Y; in the same row of first pixel units 12a, the distance between the opposite sides of the first pixel units 12a in the first column and the first pixel units 12a in the last column is between 0.3cm and 1cm. Exemplarily, this distance can be 0.3cm, 0.5cm, 0.7cm, 1cm, or any two of the above values. (Refer to...) Figure 1 As shown, since the first pixel unit 12a is located in the first curved area 11a, it can also be understood that the size W1 of the first curved area 11a along the first direction is between 0.3cm and 1cm.

[0106] The above settings, on the one hand, ensure that the width of the area where the first pixel unit 12a is located is not too small, thus ensuring that the area has a certain stress relief function; on the other hand, ensure that the width of the area where the first pixel unit 12a is located is not too large, thus ensuring that the human eye cannot perceive the brightness difference of the first curved area 11a, thereby reducing the impact on the display effect.

[0107] In one embodiment, the substrate 11 further includes a second curved region 11c, which is located on the side of the first flat region 11b away from the first curved region 11a and is connected to the first flat region 11b. The display panel 10 also includes a plurality of third pixel units 12c and at least one second stress relief structure 132. The plurality of third pixel units 12c are located on the side of the substrate 11 near the first pixel unit 12a and are arranged at intervals in the second curved region 11c. The second stress relief structure 132 is located on the side of the substrate 11 near the first pixel unit 12a and is located in the second curved region 11c. That is, the third pixel units 12c, the first pixel units 12a, the first stress relief structure 131, and the second stress relief structure 132 are all located on the same layer of the substrate 11.

[0108] Specifically, the orthographic projection of the second stress relief structure 132 on the substrate 11 does not overlap with the orthographic projection of the third pixel unit 12c on the substrate 11. That is, the second stress relief structure 132 and the third pixel unit 12c are staggered.

[0109] It should be noted here that the substrate 11 and other film layers on the substrate 11 located in the second bending region 11c are in a bent state. The second bending region 11c can be the bending position where the radius of curvature of the substrate 11 (display panel 10) is the smallest. The third pixel unit 12c refers to the smallest repeating unit of pixel arrangement within the second bending region 11c.

[0110] Thus, when the second bending region 11c of the display panel 10 is subjected to vibration or impact, the second stress relief structure 132 helps to release stress in this area, improving the shock resistance and impact resistance of the display panel 10, reducing the probability of display abnormalities caused by vibration or impact in this area, and improving the reliability of the display panel 10 and the display device. By ensuring that the orthographic projection of the second stress relief structure 132 on the substrate 11 does not overlap with the orthographic projection of the third pixel unit 12c on the substrate 11, the second stress relief structure 132 can be reasonably arranged in the second bending region 11c, avoiding its influence on the light emission of the third pixel unit 12c, which helps to ensure the display effect of the second bending region 11c.

[0111] In one embodiment, the bending center of the first bending region 11a and the bending center of the second bending region 11c are located on opposite sides of the substrate 11. This allows the display panel 10 to adapt to the multi-curved environment inside a car cabin.

[0112] In one embodiment, combined Figure 2 , Figure 3 and Figure 4As shown, the bending center of the first bending region 11a is located on the side of the substrate 11 near the first pixel unit 12a, and the first stress relief structure 131 is constructed as a groove, meaning that the display panel 10 bends towards the light-emitting side, or that the substrate 11 bends inward. The bending center of the second bending region 11c is located on the side of the substrate 11 away from the third pixel unit 12c, and the second stress relief structure 132 is constructed as a protrusion, meaning that the display panel 10 bends towards the backlight side, or that the substrate 11 bends outward.

[0113] It should be noted that when the substrate 11 bends inward, the film layer in the first bending region 11a is compressed, and the grooves can release bending stress. When the first bending region 11a is subjected to vibration or impact, the grooves can also release the stress from the external impact, thus improving the shock resistance and impact resistance of the first bending region 11a. When the substrate 11 bends outward, the film layer in the second bending region 11c mainly bears tensile stress, and the protrusions can better balance the tensile stress. When the second bending region 11c is subjected to vibration or impact, the protrusions can better balance the tensile stress caused by the external impact, thus improving the shock resistance and impact resistance of the second bending region 11c.

[0114] Alternatively, the bending center of the first bending region 11a is located on the side of the substrate 11 away from the first pixel unit 12a, and the first stress relief structure 131 is constructed as a protrusion, that is, the display panel 10 bends towards the backlight side, or the substrate 11 bends outward. The bending center of the second bending region 11c is located on the side of the substrate 11 near the third pixel unit 12c, and the second stress relief structure 132 is constructed as a groove. That is, the display panel 10 bends towards the light-emitting side, or the substrate 11 bends inward. The principle of stress relief by the protrusion and groove is the same as above, and will not be repeated here.

[0115] It is understandable that the bending center of the first bending region 11a and the bending center of the second bending region 11c can also be located on the same side of the substrate 11. That is, the bending center of the first bending region 11a and the bending center of the second bending region 11c are both located on the side of the substrate 11 away from the first pixel unit 12a, and the first stress relief structure 131 and the second stress relief structure 132 are both constructed as protrusions. Alternatively, the bending center of the first bending region 11a and the bending center of the second bending region 11c are both located on the side of the substrate 11 closer to the third pixel unit 12c, and the first stress relief structure 131 and the second stress relief structure 132 are both constructed as grooves.

[0116] In one embodiment, reference Figure 3 and Figure 4As shown, the display panel 10 also includes a pixel defining layer 14 disposed on one side of the substrate 11. The pixel defining layer 14 has a plurality of pixel openings, and sub-pixels of the first pixel unit 12a, the second pixel unit 12b, and the third pixel unit 12c are disposed at the pixel openings. At least one of the first stress relief structure 131 and the second stress relief structure 132 is disposed on the pixel defining layer 14.

[0117] In this way, the existing film layers in the display panel 10 can be utilized, reducing the manufacturing difficulty and cost of the display panel 10. Taking the first stress relief structure 131 as an example, if the first stress relief structure 131 is a groove, the groove is disposed on the pixel defining layer 14; if the first stress relief structure 131 is a protrusion, the protrusion is disposed on the surface of the pixel defining layer 14. It can be understood that the stress relief structure located on the pixel defining layer 14 can be fabricated simultaneously with the pixel defining layer 14 in the same process.

[0118] Understandably, when a protrusion is set on the pixel defining layer 14, the protrusion can also be made synchronously with the support pillars on the pixel defining layer 14.

[0119] In one embodiment, the display panel 10 further includes an array film layer (not shown) disposed on one side of the substrate 11, wherein the first pixel unit 12a, the second pixel unit 12b, and the third pixel unit 12c are all disposed on the side of the array film layer away from the substrate 11. At least one of the first stress relief structure 131 and the second stress relief structure 132 is disposed on the array film layer. In this way, the existing film layer in the display panel 10 can be utilized, reducing the manufacturing difficulty and cost of the display panel 10.

[0120] In one example, the array film layer includes a planarization layer, and at least one of a first stress relief structure 131 and a second stress relief structure 132 is disposed on the planarization layer.

[0121] In one example, the array film layer includes an insulating layer, and at least one of the first stress relief structure 131 and the second stress relief structure 132 is disposed on the insulating layer.

[0122] In one example, the array film layer includes a metal layer, and at least one of the first stress relief structure 131 and the second stress relief structure 132 is disposed on the metal layer.

[0123] It is understood that the first stress relief structure 131 and the second stress relief structure 132 can also be disposed on other film layers of the display panel 10.

[0124] In one embodiment, the orthographic projection of the second stress relief structure 132 onto the substrate 11 is located between the orthographic projections of two adjacent third pixel units 12c onto the substrate 11. Thus, by arranging the second stress relief structure 132 appropriately in the second bending region 11c, it is possible to avoid the second stress relief structure 132 affecting the light emission of the third pixel units 12c, which is beneficial to ensuring the display effect of the second bending region 11c.

[0125] In one embodiment, a second stress relief structure 132 is provided between any two adjacent third pixel units 12c. This allows for a greater number of second stress relief structures 132 to be provided in the second bending region 11c, thereby further improving the seismic and impact resistance of the second bending region 11c.

[0126] In one embodiment, reference Figure 5C As shown, the second bending region 11c includes a plurality of third sub-regions 11c1, and the display panel 10 includes a plurality of second stress relief structures 132. The second stress relief structures 132 correspond one-to-one with the third pixel units 12c. Each third sub-region 11c1 contains a third pixel unit 12c and a second stress relief structure 132 corresponding to the third pixel unit 12c.

[0127] Here, the third sub-region 11c1 can be understood as a unit area region, or it can be considered as a pitch. Furthermore, the third pixel unit 12c can be considered as a "second differentiated pixel unit" different from the "regular pixel unit". Furthermore, the region where the third pixel unit 12c is located (the second curved region 11c) is also equivalent to the second pixel difference region.

[0128] The above configuration is equivalent to arranging a third pixel unit 12c and a second stress-relieving structure 132 within a pitch. This serves two purposes: firstly, it ensures a uniform distribution of the third pixel unit 12c, guaranteeing consistent display quality across all positions; secondly, it is equivalent to a differentiated design for the pixel units within the second curvature region 11c, by adding a second stress-relieving structure 132 to each unit area of ​​the second curvature region 11c. When the display panel 10 is subjected to vibration or impact, the stress at the curvature location with a smaller radius of curvature (such as the second curvature region 11c) can be released, preventing film layer breakage and thus avoiding abnormal image display.

[0129] In one embodiment, a plurality of third pixel units 12c are arranged in rows along a first direction X and in columns along a second direction Y. The orthographic projection of the second stress relief structure 132 on the substrate 11 is located between the orthographic projections of two adjacent third pixel units 12c on the substrate 11 along the first direction X.

[0130] In this way, on the one hand, it is beneficial to set a larger number of second stress relief structures 132 in the second bending zone 11c, thereby further improving the seismic performance and impact resistance of the second bending zone 11c; on the other hand, it can also make the second stress relief structures 132 arranged more evenly in the second bending zone 11c, so that the stress relief performance of the second bending zone 11c is more uniform.

[0131] In one embodiment, the third pixel unit 12c includes a first sub-pixel 121, a second sub-pixel 122, and a third sub-pixel 123. The area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the third pixel unit 12c is equal to the area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the first pixel unit 12a. That is, the area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the third pixel unit 12c is equal to n:m:z, and the area ratio of the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the second pixel unit 12b is also equal to n:m:z.

[0132] This reduces the brightness difference between the first flat area 11b and the first curved area 11a, which helps improve the display effect.

[0133] It should be noted that, in order to arrange the third pixel unit 12c and the second stress relief structure 132 within the third sub-region 11c1, the area of ​​the first sub-pixel 121 in the third pixel unit 12c can be smaller than the area of ​​the first sub-pixel 121 in the second pixel unit 12b, the area of ​​the second sub-pixel 122 in the third pixel unit 12c can be smaller than the area of ​​the second sub-pixel 122 in the second pixel unit 12b, and the area of ​​the third sub-pixel 123 in the third pixel unit 12c can be smaller than the area of ​​the third sub-pixel 123 in the second pixel unit 12b. This allows space to be reserved in the second sub-region 11b1 for the installation of the first stress relief structure 131.

[0134] In one embodiment, the third pixel unit 12c includes a first sub-pixel 121, a second sub-pixel 122, and a third sub-pixel 123. Within the same third pixel unit 12c, the first sub-pixel 121 and the second sub-pixel 122 are arranged at intervals along the second direction Y, and the third sub-pixel 123 is located on one side of the first sub-pixel 121 and the second sub-pixel 122 along the first direction X. This allows for better display performance within the second curved region 11c. It is understood that the first sub-pixel 121, the second sub-pixel 122, and the third sub-pixel 123 in the first pixel unit 12a can also be arranged in other ways, and this embodiment does not limit this arrangement.

[0135] In one embodiment, in all third pixel units 12c, all first sub-pixels 121 are arranged in rows along a first direction X and in columns along a second direction Y. Along the first direction X, the distance between any two adjacent first sub-pixels 121 is equal to a first value, that is, the distance between any two adjacent first sub-pixels 121 is equidistant along the first direction X. Along the second direction Y, the distance between any two adjacent first sub-pixels 121 is equal to a second value, that is, the distance between any two adjacent first sub-pixels 121 is equidistant along the second direction Y.

[0136] This helps to make the first sub-pixel 121 in the second curved area 11c more evenly distributed, and helps to keep the display effect of each position in the first curved area 11a consistent.

[0137] In one embodiment, in all third pixel units 12c, all second sub-pixels 122 are arranged in rows along a first direction X and in columns along a second direction Y. Along the first direction X, the distance between any two adjacent second sub-pixels 122 is equal to a third value, that is, the distance between any two adjacent second sub-pixels 122 is equal along the first direction X. Along the second direction Y, the distance between any two adjacent second sub-pixels 122 is equal to a fourth value, that is, the distance between any two adjacent second sub-pixels 122 is equal along the second direction Y.

[0138] This helps to make the second sub-pixels 122 in the second curved area 11c more evenly distributed, and helps to keep the display effect of each position in the first curved area 11a consistent.

[0139] In one embodiment, in all third pixel units 12c, all third sub-pixels 123 are arranged in rows along the first direction X and in columns along the second direction Y. Along the first direction X, the distance between any two adjacent third sub-pixels 123 is equal to a fifth value, that is, the distance between any two adjacent third sub-pixels 123 is equidistant along the first direction X. Along the second direction Y, the distance between any two adjacent third sub-pixels 123 is equal to a sixth value, that is, the distance between any two adjacent third sub-pixels 123 is equidistant along the second direction Y.

[0140] It should be noted that the first value here is the same as the first value in the previous text, the second value here is the same as the second value in the previous text, the third value here is the same as the third value in the previous text, the fourth value here is the same as the fourth value in the previous text, the fifth value here is the same as the fifth value in the previous text, and the sixth value here is the same as the sixth value in the previous text.

[0141] In one embodiment, the second pixel unit 12b includes a first sub-pixel 121, a second sub-pixel 122 and a third sub-pixel 123; in the same second pixel unit 12b, the first sub-pixel 121 and the second sub-pixel 122 are arranged at intervals along the second direction Y, and the third sub-pixel 123 is located on one side of the first sub-pixel 121 and the second sub-pixel 122 along the first direction X.

[0142] In the second pixel unit 12b, all first sub-pixels 121 are arranged in rows along the first direction X and in columns along the second direction Y. All second sub-pixels 122 are arranged in rows along the first direction X and in columns along the second direction Y. All third sub-pixels 123 are arranged in rows along the first direction X and in columns along the second direction Y. Along the first direction X, the distance between any two adjacent first sub-pixels 121 is equal to a first value, that is, the distance between any two adjacent first sub-pixels 121 is equal in the first direction X. Along the second direction Y, the distance between any two adjacent first sub-pixels 121 is equal to a second value, that is, the distance between any two adjacent first sub-pixels 121 is equal in the second direction Y. Along the first direction X, the distance between any two adjacent second sub-pixels 122 is equal to a third value, that is, the distance between any two adjacent second sub-pixels 122 is equal in the first direction X. Along the second direction Y, the distance between any two adjacent second sub-pixels 122 is equal to the fourth value, meaning that the distance between any two adjacent second sub-pixels 122 is equidistant along the second direction Y. Along the first direction X, the distance between any two adjacent third sub-pixels 123 is equal to the fifth value, meaning that the distance between any two adjacent third sub-pixels 123 is equidistant along the first direction X. Along the second direction Y, the distance between any two adjacent third sub-pixels 123 is equal to the sixth value, meaning that the distance between any two adjacent third sub-pixels 123 is equidistant along the second direction Y.

[0143] This helps improve the uniformity of the display panel 10 and enhances the display effect.

[0144] In one embodiment, all the third pixel units 12c are arranged in rows along the first direction X and in columns along the second direction Y; in the same row of third pixel units 12c, the distance between the opposite sides of the first column of third pixel units 12c and the last column of third pixel units 12c is between 0.3cm and 1cm. Exemplarily, this distance can be 0.3cm, 0.5cm, 0.7cm, 1cm, or between any two of the above values. Since the third pixel units 12c are located in the second curved area 11c, it can also be understood that the size of the second curved area 11c along the first direction X is between 0.3cm and 1cm.

[0145] The above settings, on the one hand, ensure that the width of the area where the third pixel unit 12c is located is not too small, thus ensuring that the area has a certain stress relief function; on the other hand, they ensure that the width of the area where the third pixel unit 12c is located is not too large, thus ensuring that the human eye cannot perceive the brightness difference of the second curved area 11c, thereby reducing the impact on the display effect.

[0146] In one embodiment, in the first pixel units 12a of the same row in the first curved region 11a, the distance between the opposite sides of the first pixel units 12a in the first column and the first pixel units 12a in the last column is a first distance. In the second pixel units 12b of the same row in the first straight region 11b, the distance between the opposite sides of the second pixel units 12b in the first column and the second pixel units 12b in the last column is a second distance. In the third pixel units 12c of the same row in the second curved region 11c, the distance between the opposite sides of the third pixel units 12c in the first column and the third pixel units 12c in the last column is a third distance.

[0147] The ratio of the first distance to the sum of the first, second, and third distances is between 0.005 and 0.015. For example, the ratio can be 0.005, 0.01, 0.012, 0.015, or between any two of the above values.

[0148] Since the first pixel unit 12a is located in the first curved region 11a, the first distance can be understood as the dimension of the first curved region 11a along the first direction X, that is, the first distance is the width of the first curved region 11a. Since the second pixel unit 12b is located in the first flat region 11b, the second distance can be understood as the dimension of the first flat region 11b along the first direction X, that is, the second distance is the width of the first flat region 11b. Since the third pixel unit 12c is located in the second curved region 11c, the third distance can be understood as the dimension of the second curved region 11c along the first direction X, that is, the third distance is the width of the second curved region 11c.

[0149] The above setting means that, among the sum of the widths of the first curved region 11a, the first straight region 11b, and the second curved region 11c, the width of the first curved region 11a (i.e., the first pixel difference region) is relatively small. In other words, the width of the first pixel difference region is relatively small, which can minimize the loss of aperture ratio.

[0150] In one embodiment, the display panel 10 has a display area, the size of which along a first direction X is the width of the display area, and the ratio of the width of the first curved area 11a (i.e., the first pixel difference area) to the width of the display area is between 0.005 and 0.015. This makes the width of the first pixel difference area smaller, minimizing the loss of aperture ratio.

[0151] In one embodiment, the ratio of the third distance to the sum of the first, second, and third distances is between 0.005 and 0.015. Exemplarily, this ratio can be 0.005, 0.01, 0.012, 0.015, or any two of the above values.

[0152] The above setting means that, in the sum of the widths of the first curved region 11a, the first straight region 11b, and the second curved region 11c, the width of the second curved region 11c (i.e., the second pixel difference region) is relatively small. In other words, the width of the second pixel difference region is relatively small, which can minimize the loss of aperture ratio.

[0153] In one embodiment, the display panel 10 has a display area whose width is defined by its dimension along a first direction X. The ratio of the width of the second curved area 11c (i.e., the second pixel difference area) to the width of the display area is between 0.005 and 0.015. This makes the width of the second pixel difference area smaller, thereby minimizing the loss of aperture ratio.

[0154] In one embodiment, reference Figure 6A , Figure 6B , Figure 6C As shown, the planar shape of the first stress relief structure 131 and the second stress relief structure 132 can be strip-shaped. Further, the planar shape of the first stress relief structure 131 and the second stress relief structure 132 can be a regular strip structure or an irregular strip structure. In one example, such as... Figure 6A and Figure 6B As shown, when the first stress relief structure 131 (or the second stress relief structure 132) is a strip structure, the side of the first stress relief structure 131 (or the second stress relief structure 132) may be provided with protrusions. The specific shapes of the first stress relief structure 131 and the second stress relief structure 132 can be selected according to actual conditions. In this embodiment, the shapes of the first stress relief structure 131 and the second stress relief structure 132 are not particularly limited.

[0155] It should be noted that the inventors conducted simulations for both a conventional display panel 10 and the display panel 10 provided in this embodiment. The simulation results show that when subjected to vibration or impact, the stress at the bending position of the display panel 10 provided in this embodiment is reduced by 4% compared to the stress at the bending position of the conventional display panel 10. Therefore, the display panel 10 provided in this embodiment can improve the shock resistance and impact resistance of the display panel 10, thereby reducing the probability of display abnormalities caused by vibration or impact.

[0156] In one embodiment, reference Figure 1As shown, the substrate 11 also has a second flat region 11d and a third flat region 11e. The second flat region 11d is located on the side of the first curved region 11a away from the first flat region 11b, and the third flat region 11e is located on the side of the second curved region 11c away from the first flat region 11b. The pixel arrangement of the first flat region 11b, the second flat region 11d, and the third flat region 11e is the same.

[0157] Secondly, embodiments of this application provide a display device, including the display panel of the first aspect.

[0158] The display device can be a laptop computer, mobile phone, wireless device, personal digital assistant (PDA), handheld or portable computer, GPS receiver / navigator, camera, MP4 video player, camcorder, game console, watch, clock, calculator, TV monitor, flat panel display, computer monitor, car display (e.g., odometer display), navigator, cockpit controller and / or display, camera view display (e.g., display of a rearview camera in a vehicle), electronic photograph, electronic billboard or sign, projector, etc.

[0159] The display device provided in this application embodiment arranges at least a portion of the pixel units in the circuit area and wiring area of ​​the corresponding sub-region. Since the circuit area already contains a driving circuit group and the wiring area already contains sub-wiring groups, arranging at least a portion of the pixel units in the circuit area and wiring area has two advantages: firstly, the position and arrangement of the pixel units do not affect the transmittance of the light-transmitting area, thus improving the transmittance of the display panel; secondly, utilizing the space of the circuit area and wiring area to arrange the pixel units increases the arrangement area of ​​the pixel units, thereby improving the aperture ratio and ultimately enhancing the display effect and lifespan.

[0160] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0161] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0162] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: A substrate having a first bending region; Multiple first pixel units are disposed on one side of the substrate and arranged at intervals in the first curved area; At least one first stress relief structure is disposed on the side of the substrate near the first pixel unit and located in the first bending region; Wherein, the orthographic projection of the first stress relief structure on the substrate does not overlap with the orthographic projection of the first pixel unit on the substrate; The orthographic projection of the first stress relief structure on the substrate is located between the orthographic projections of two adjacent first pixel units on the substrate. The first bending region includes multiple first sub-regions; the display panel includes multiple first stress relief structures, each first stress relief structure corresponding to a first pixel unit, and each first sub-region has a first pixel unit and a first stress relief structure corresponding to the first pixel unit; The substrate further has a first flat region, the first flat region and the first curved region are arranged along a first direction, and the first flat region is connected to the first curved region; The display panel further includes a plurality of second pixel units, which are disposed on the side of the substrate near the first pixel unit and are arranged at intervals in the first flat area; The first flat region includes multiple second sub-regions, and the multiple second pixel units are arranged in a one-to-one correspondence among the multiple second sub-regions; the area of ​​the first sub-region is equal to the area of ​​the second sub-region; Both the first pixel unit and the second pixel unit include a first sub-pixel, a second sub-pixel, and a third sub-pixel; the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively used to emit light of different colors; Wherein, the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the second pixel unit is equal to the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the first pixel unit; The area of ​​the first sub-pixel in the first pixel unit is smaller than the area of ​​the first sub-pixel in the second pixel unit, the area of ​​the second sub-pixel in the first pixel unit is smaller than the area of ​​the second sub-pixel in the second pixel unit, and the area of ​​the third sub-pixel in the first pixel unit is smaller than the area of ​​the third sub-pixel in the second pixel unit.

2. The display panel according to claim 1, characterized in that, The plurality of first pixel units are arranged in rows along a first direction and in columns along a second direction intersecting the first direction, wherein both the first direction and the second direction are perpendicular to the thickness direction of the substrate; The orthographic projection of the first stress relief structure on the substrate is located between the orthographic projections of two adjacent first pixel units on the substrate along the first direction.

3. The display panel according to claim 2, characterized in that, All the second pixel units are arranged in rows along the first direction and in columns along the second direction.

4. The display panel according to claim 3, characterized in that, The first pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; in the same first pixel unit, the first sub-pixel and the second sub-pixel are arranged at intervals along the second direction, and the third sub-pixel is located on one side of the first sub-pixel and the second sub-pixel along the first direction.

5. The display panel according to claim 4, characterized in that, In all the first pixel units, all the first sub-pixels are arranged in rows along the first direction and in columns along the second direction; Along the first direction, the distance between any two adjacent first sub-pixels is equal to a first value; along the second direction, the distance between any two adjacent first sub-pixels is equal to a second value.

6. The display panel according to claim 4, characterized in that, In all the first pixel units, all the second sub-pixels are arranged in rows along the first direction and in columns along the second direction; Along the first direction, the distance between any two adjacent second sub-pixels is equal to the third value; along the second direction, the distance between any two adjacent second sub-pixels is equal to the fourth value.

7. The display panel according to claim 4, characterized in that, In all the first pixel units, all the third sub-pixels are arranged in rows along the first direction and in columns along the second direction; Along the first direction, the distance between any two adjacent third sub-pixels is equal to the fifth value; along the second direction, the distance between any two adjacent third sub-pixels is equal to the sixth value.

8. The display panel according to claim 3, characterized in that, All the first pixel units are arranged in rows along the first direction and in columns along the second direction; in the same row of first pixel units, the distance between the opposite sides of the first pixel units in the first column and the first pixel units in the last column is between 0.3cm and 1cm.

9. The display panel according to claim 3, characterized in that, The substrate further has a second curved region, which is located on the side of the first straight region away from the first curved region and is connected to the first straight region. The display panel also includes: Multiple third pixel units are disposed on the side of the substrate near the first pixel unit and are arranged at intervals in the second curved area; At least one second stress relief structure is disposed on the side of the substrate near the first pixel unit and located in the second bending region; Wherein, the orthographic projection of the second stress relief structure on the substrate does not overlap with the orthographic projection of the third pixel unit on the substrate.

10. The display panel according to claim 9, characterized in that, The bending centers of the first bending region and the second bending region are located on opposite sides of the substrate.

11. The display panel according to claim 9, characterized in that, The bending center of the first bending region is located on the side of the substrate closer to the first pixel unit, and the first stress relief structure is constructed as a groove; the bending center of the second bending region is located on the side of the substrate away from the third pixel unit, and the second stress relief structure is constructed as a protrusion. Alternatively, the bending center of the first bending region is located on the side of the substrate away from the first pixel unit, and the first stress relief structure is constructed as a protrusion; the bending center of the second bending region is located on the side of the substrate closer to the third pixel unit, and the second stress relief structure is constructed as a groove.

12. The display panel according to claim 11, characterized in that, The display panel further includes a pixel defining layer disposed on one side of the substrate. The pixel defining layer has a plurality of pixel openings, and the sub-pixels of the first pixel unit, the second pixel unit and the third pixel unit are disposed at the pixel openings. At least one of the first stress relief structure and the second stress relief structure is disposed on the pixel defining layer.

13. The display panel according to claim 11, characterized in that, The display panel further includes an array film layer disposed on one side of the substrate, wherein the first pixel unit, the second pixel unit and the third pixel unit are all disposed on the side of the array film layer away from the substrate; At least one of the first stress relief structure and the second stress relief structure is disposed on the array film layer.

14. The display panel according to claim 9, characterized in that, The orthographic projection of the second stress relief structure on the substrate is located between the orthographic projections of two adjacent third pixel units on the substrate.

15. The display panel according to claim 14, characterized in that, The second bending region includes multiple third sub-regions, and the display panel includes multiple second stress relief structures. Each second stress relief structure corresponds to a third pixel unit. Each third sub-region contains a third pixel unit and a second stress relief structure corresponding to the third pixel unit.

16. The display panel according to claim 15, characterized in that, The plurality of third pixel units are arranged in rows along the first direction and in columns along the second direction; The orthographic projection of the second stress relief structure on the substrate is located between the orthographic projections of two adjacent third pixel units on the substrate along the first direction.

17. The display panel according to claim 16, characterized in that, The third pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the third pixel unit is equal to the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the first pixel unit.

18. The display panel according to claim 16, characterized in that, The third pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; in the same third pixel unit, the first sub-pixel and the second sub-pixel are arranged at intervals along the second direction, and the third sub-pixel is located on one side of the first sub-pixel and the second sub-pixel along the first direction.

19. The display panel according to claim 16, characterized in that, In all third pixel units, all first sub-pixels are arranged in rows along the first direction and in columns along the second direction; Along the first direction, the distance between any two adjacent first sub-pixels is equal to a first value; along the second direction, the distance between any two adjacent first sub-pixels is equal to a second value.

20. The display panel according to claim 16, characterized in that, In all third pixel units, all second sub-pixels are arranged in rows along the first direction and in columns along the second direction; Along the first direction, the distance between any two adjacent second sub-pixels is equal to the third value; along the second direction, the distance between any two adjacent second sub-pixels is equal to the fourth value.

21. The display panel according to claim 16, characterized in that, In all third pixel units, all the third sub-pixels are arranged in rows along the first direction and in columns along the second direction; Along the first direction, the distance between any two adjacent third sub-pixels is equal to the fifth value; along the second direction, the distance between any two adjacent third sub-pixels is equal to the sixth value.

22. The display panel according to claim 16, characterized in that, All the third pixel units are arranged in rows along the first direction and in columns along the second direction; in the same row of third pixel units, the distance between the opposite sides of the third pixel units in the first column and the third pixel units in the last column is between 0.3cm and 1cm.

23. The display panel according to claim 9, characterized in that, In the first pixel unit in the same row of the first curved region, the distance between the first pixel unit in the first column and the first pixel unit in the last column that are opposite to each other is the first distance; In the same row of the second pixel units in the first flat area, the distance between the two opposite sides of the second pixel units in the first column and the second pixel units in the last column is the second distance; In the same row of the third pixel units in the second curved region, the distance between the sides of the third pixel units in the first column and the third pixel units in the last column that are opposite to each other is the third distance; The ratio of the first distance to the sum of the first distance, the second distance, and the third distance is between 0.005 and 0.015; and / or the ratio of the third distance to the sum of the first distance, the second distance, and the third distance is between 0.005 and 0.

015.

24. A display device, characterized in that, Includes the display panel as described in any one of claims 1-23.

Images