Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a first area and a second area, the display panel further comprises a plurality of pixels arranged in an array and a plurality of heating devices. The heating device is at least located in the first area; when a part of pixels in the first area and the second area emit light, the pixels in a light-emitting state in the first area are first pixels, and the pixels in a light-emitting state in the second area are second pixels; the temperature of the area where the first pixel is located is a first temperature, the temperature of the area where the second pixel is located is a second temperature, and the difference value between the first temperature and the second temperature is T1; in the first direction, the distance between the first pixel and the second pixel is larger than a first preset interval, and the first direction is the arrangement direction of the first area and the second area; wherein T1 is less than 1 DEG C. According to the technical scheme, the luminance uniformity of the display panel can be improved, and the display effect of the display panel is improved.

Description

Technical Field

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

[0002] With the development of display technology, people have higher and higher requirements for the display quality of display panels. When a display panel displays a picture, the device in each pixel of the display panel has a certain impedance, which causes a certain temperature when the pixel displays light. However, the temperature of the environment in which the pixel is located will also affect the display brightness of the pixel itself. Therefore, when the temperature of the pixel in each area of ​​the display panel is different, it is easy to cause the display brightness of the display panel to be uneven, affecting the display effect of the display panel. Summary of the invention

[0003] The present invention provides a display panel and a display device to balance the temperature difference of the area where each pixel in the display panel is located, thereby improving the uniformity of the luminous brightness and the display effect of the display panel.

[0004] In a first aspect, the present invention provides a display panel, comprising: a first area and a second area;

[0005] The display panel further comprises a plurality of pixels arranged in an array, and a plurality of heating devices; the heating devices are at least located in the first area;

[0006] When some of the pixels in the first area and the second area emit light, the pixels in the first area that are in the light-emitting state are first pixels, and the pixels in the second area that are in the light-emitting state are second pixels; the temperature of the area where the first pixels are located is a first temperature, the temperature of the area where the second pixels are located is a second temperature, and the difference between the first temperature and the second temperature is △T1; along a first direction, the distance between the first pixel and the second pixel is greater than a first preset spacing, and the first direction is the arrangement direction of the first area and the second area;

[0007] Among them, |△T1|<1℃.

[0008] In a second aspect, the present invention provides a display device, comprising the display panel described in the first aspect.

[0009] The technical solution provided by the present invention is to set a heating device at least in the first zone, and the heating device can provide heat for the pixels in the first zone to adjust the temperature of the pixels in the first zone, so that the pixels with a smaller spacing in the first zone can have a smaller temperature difference, thereby improving the display uniformity of each pixel in the first zone; at the same time, when the distance between the first pixel in the first zone in a light-emitting state and the second pixel in the second zone in a light-emitting state is greater than the first preset spacing, the first pixel in the first zone is heated by controlling the heating device in the first zone, and the temperature of the first pixel is increased to the first temperature, so that the absolute value of the difference between the first temperature of the first pixel and the second temperature of the second pixel is less than 1°C, so that there is a smaller temperature difference between the first pixel and the second pixel, the difference in luminous brightness between the first pixel and the second pixel is reduced, the luminous brightness uniformity of the first zone and the second zone is improved, and the display effect of the display panel is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the structure of a display panel in the related art;

[0011] Figure 2 A schematic diagram of a top view structure of a display panel provided by an embodiment of the present invention;

[0012] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the section line A-A';

[0013] Figure 4 A schematic diagram of a partial film layer structure of a display panel provided by an embodiment of the present invention;

[0014] Figure 5 A schematic diagram of a top view of another display panel provided by an embodiment of the present invention;

[0015] Figure 6 A schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention;

[0016] Figure 7 A schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention;

[0017] Figure 8 A schematic diagram of a top view structure of a display panel provided by an embodiment of the present invention;

[0018] Fig. 9 A schematic diagram of a top view of another display panel provided by an embodiment of the present invention;

[0019] Fig.10 A schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention;

[0020] Fig.11 A schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention;

[0021] Fig.12 A schematic diagram of the structure of a pixel provided by an embodiment of the present invention;

[0022] Fig.13 A schematic diagram of a partial cross-sectional structure of a display panel provided by an embodiment of the present invention;

[0023] Fig.14 A schematic diagram of a partial cross-sectional structure of another display panel provided by an embodiment of the present invention;

[0024] Fig.15 A schematic diagram of a bottom-up structure of a display panel provided by an embodiment of the present invention;

[0025] Fig.16 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0026] Fig.17 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0027] Fig.18 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0028] Fig.19 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0029] Fig. 20 A schematic structural diagram of a heat dissipation structure provided by an embodiment of the present invention;

[0030] Fig.21 A schematic diagram of another heat dissipation structure provided by an embodiment of the present invention;

[0031] Fig. 22 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0032] Fig.23 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0033] Fig.24 A structural schematic diagram of another heat dissipation structure provided by an embodiment of the present invention;

[0034] Fig.25 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] Figure 1 is a schematic diagram of the structure of a display panel of the related technology, such as Figure 1 As shown, the display area of ​​the display panel 001 is provided with pixels 03 arranged in an array, and by controlling each pixel 03 to display and emit light, the display panel 001 can display the corresponding picture. Among them, when the display panel 001 displays the picture, the heat generated by the pixels 03 located in the edge area 01 of the display area in the light-emitting state can be released to the outside through the edge of the display panel 001, so the pixel temperature of the edge area 01 is relatively low; while the heat generated by the pixels 03 located in the central area 02 of the display area in the light-emitting state can only be released through the display surface of the display panel and the side surface away from the display surface, so the pixel temperature of the central area 02 is relatively high. This temperature distribution makes the light-emitting brightness of the pixels 02 in the central area 02 different from the light-emitting brightness of the pixels 01 in the edge area 01, which affects the display effect of the display panel 001.

[0037] To solve the above problems, an embodiment of the present invention provides a display panel, which includes a first area and a second area; the display panel also includes a plurality of pixels arranged in an array, and a plurality of heating devices; the heating device is at least located in the first area; when some pixels in the first area and the second area emit light, the pixels in the first area that are in a light-emitting state are first pixels, and the pixels in the second area that are in a light-emitting state are second pixels; the temperature in the area where the first pixel is located is the first temperature, the temperature in the area where the second pixel is located is the second temperature, and the difference between the first temperature and the second temperature is △T1; along the first direction, the distance between the first pixel and the second pixel is greater than the first preset spacing, and the first direction is the arrangement direction of the first area and the second area. Wherein, |△T1|<1℃.

[0038] By adopting the above technical solution, a heating device is provided at least in the first zone, and the heating device can provide heat for the pixels in the first zone to adjust the temperature of the pixels in the first zone, so that pixels with a smaller spacing in the first zone can have a smaller temperature difference, thereby improving the display uniformity of each pixel in the first zone; at the same time, when the distance between a first pixel in a light-emitting state in the first zone and a second pixel in a light-emitting state in the second zone is greater than a first preset spacing, the first pixel in the first zone is heated by controlling the heating device in the first zone, and the temperature of the first pixel is increased to the first temperature, so that the absolute value of the difference between the first temperature of the first pixel and the second temperature of the second pixel is less than 1°C, so that there is a smaller temperature difference between the first pixel and the second pixel, the difference in luminous brightness between the first pixel and the second pixel is reduced, the luminous brightness uniformity of the first zone and the second zone is improved, and the display effect of the display panel is improved.

[0039] The above is the core idea of ​​the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0040] Figure 2 A schematic diagram of a top view structure of a display panel provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the display panel 100 includes a first area 10 and a second area 20. The display panel 100 may also include a plurality of pixels 30 arranged in an array, and the plurality of pixels 30 arranged in an array may be located in the display area; the display panel 100 may also include a non-display area at least partially surrounding the display area, and the non-display area may be used to set non-display devices such as a driver chip, and the non-display devices such as a driver chip set in the non-display area can control each pixel 30 in the display area to display and emit light, so that the display area displays a dynamic or static picture.

[0041] It can be understood that the positional relationship between the first area 10 and the second area 20 can be designed according to actual needs. For example, the display area may include the first area 10 and the second area 20, or the display area includes the second area 20 and the non-display area includes the first area 10, or the non-display area includes the second area 20 and the display area includes the first area 10. The positional relationship between the first area 10 and the second area 20 can be determined according to the degree of temperature difference between pixels in the first area 10 and the second area 20. In an optional embodiment, the first area 10 at least partially surrounds the second area 20. Figure 5 A schematic diagram of a top view of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, the first region 10 partially surrounds the second region 20 .

[0042] Specifically, the first zone 10 may be located in an edge area of ​​the display panel 100, and the second zone 20 may be located in a middle area of ​​the display panel 100. The heat generated by the pixels 30 in the first zone 10 when working can be released to the external environment through the display surface of the display panel 100, the back surface facing away from the display surface, and the side surface connecting the display surface and the back surface. The heat generated by the pixels 30 in the second zone 20 when working can only be released through the display surface of the display panel 100, the back surface facing away from the display surface, and part of the side surface connecting the display surface and the back surface. Therefore, the pixels 30 in the first zone 10 have a better heat dissipation effect, the overall temperature in the first zone 10 is lower, and the overall temperature in the second zone 20 is higher; the temperature difference between the first pixel 31 in the first zone 10 and the second pixel 32 in the second zone 20 is large. In another optional embodiment, continue to refer to Figure 2 , the first area 10 can also be arranged entirely around the second area 20, in which case the first area 10 can be located at the edge area of ​​the display panel 100, and the second area 20 can be located at the middle area of ​​the display panel 100, and the heat generated by the pixels 30 in the second area 20 when working can only be released through the display surface of the display panel 100 and the back surface away from the display surface. When some pixels 30 in the first area 10 and the second area 20 emit light, the pixels 30 in the first area 10 have a better heat dissipation effect, the overall temperature in the first area 10 is lower, and the overall temperature in the second area 20 is higher, and the temperature difference between the first pixel 31 in the first area 10 and the second pixel 32 in the second area 20 is large. Among them, the first area 10 and the second area 20 can be regular or irregular shapes, and can be arranged according to actual needs. For ease of explanation, the embodiment of the present invention is described by taking the first area 10 surrounding the second area 20 as an example, but the technical solution of the present invention is not limited thereto.

[0043] Continue to refer Figure 2 The display panel 100 further includes a plurality of heating devices 40 , and the heating devices 40 are at least located in the first area 10 .

[0044] The heating device 40 is used to provide heat, and the heating device 40 may include a component made of metal materials such as nickel-chromium, iron-chromium-aluminum or nickel-iron, or a component made of non-metallic materials such as silicon nitride or electric heating paint, and may be set according to actual needs, which is not specifically limited here. In an optional embodiment, the heating device 40 includes a resistance wire or a resistance block.

[0045] It should be noted that, in the first area 10, the positional relationship between the heating device 40 and the pixel 30 can be set according to actual needs. Figure 3 for Figure 2 Schematic diagram of the cross-section structure along the section line A-A', refer to Figure 2 and Figure 3, the heating device 40 is located between at least two adjacent pixels 30, the pixel 30 includes a driving circuit 120 and a light emitting element 301, and the heating device 30 is located between the light emitting elements 301 in the two adjacent pixels 30. The display panel 100 includes a driving substrate 110, the driving substrate 110 includes a base substrate 111 and a driving circuit 120 located on one side of the base substrate 111, and a first bonding terminal group 310 and a second bonding terminal group 320 are provided on a surface of the driving circuit 120 facing away from the base substrate 111, and the first bonding terminal group 310 is located between the first bonding terminal groups 310 in adjacent pixels. The heating device 40 can be bonded and connected to the second bonding terminal group 320 and the light emitting element 301 can be bonded and connected to the first bonding terminal group 310 by mass transfer, so that the heating device 40 is located between the two adjacent pixels 30.

[0046] In another optional embodiment, the heating device 40 may be located in the driving circuit 120 of the pixel 30. Figure 4 A schematic diagram of a partial film layer structure of a display panel provided by an embodiment of the present invention, such as Figure 4 As shown, a transistor is used to represent the driving circuit 120. At this time, the display function layer includes a semiconductor layer 24, a first metal layer 25, a second metal layer 26, an anode layer 27, a pixel definition layer 28 and a cathode layer 29; the semiconductor layer 24 may include an active layer of a transistor, the first metal layer 25 includes a gate electrode and other devices of the transistor, the second metal layer 26 includes a source electrode and a drain electrode and other devices of the transistor, the anode layer 27 may include an anode of a light-emitting element 301, the cathode layer 29 includes a cathode of the light-emitting element 301, and a light-emitting function layer 210 of the light-emitting element 301 may be provided between the anode layer 27 and the cathode layer 29. Among them, the heating device 40 is located in the second metal layer 26 close to the light-emitting element 301, so that when the heating device 40 is working, the heat provided by the heating device 40 can be quickly transmitted to the light-emitting element 301, thereby improving the temperature adjustment efficiency of the heating device 40 on the light-emitting element 301, and at the same time, there is no need to set a separate film layer for the heating device 40, thereby reducing the number of film layers set in the display panel 100, and making the display panel 100 thinner and lighter. In other optional embodiments, the heating device 40 may also be located in the first metal layer 25 or the semiconductor layer 24. In addition, no matter the heating device 40 is located in the first metal layer 25, the second metal layer 26 or the semiconductor layer 24, the shape of the heating device 40 may be rectangular, circular, spiral or wavy, etc., and may be set according to actual needs, which is not specifically limited here.

[0047] Continue to refer Figure 2, when some pixels 30 in the first area 10 and the second area 20 emit light, the pixels 30 in the first area 10 that are in the light-emitting state are the first pixels 31, and the pixels 30 in the second area 20 that are in the light-emitting state are the second pixels 32; the temperature in the area where the first pixel 31 is located is the first temperature T1, the temperature in the area where the second pixel 32 is located is the second temperature T2, and the difference between the first temperature T1 and the second temperature T2 is △T1; along the first direction (X1 / X2), the distance between the first pixel 31 and the second pixel 32 is greater than the first preset spacing L1, and the first direction (X1 / X2) is the arrangement direction of the first area 10 and the second area 20. Wherein, |△T1|<1℃.

[0048] The first preset spacing may be determined based on the minimum distance between the pixels 30 in the first area 10 and the pixels 30 in the second area 20 at which the temperature difference is large. In an optional embodiment, the value range of the first preset spacing L1 may be L1 ≥ 5 mm. For example, the first preset spacing L1 is 5 mm, and may be other values, which are not specifically limited here.

[0049] It should be noted that when the distance between the first pixel 31 in the first area 10 in the light-emitting state and the second pixel 32 in the second area 20 in the light-emitting state is less than 5 mm, the absolute value of the temperature difference between the first pixel 31 and the second pixel 32 is less than 1°C. When the distance between the first pixel 31 in the first area 10 in the light-emitting state and the second pixel 32 in the second area 20 in the light-emitting state is greater than or equal to 5 mm, the absolute value of the temperature difference between the first pixel 31 and the second pixel 32 is greater than or equal to 1°C. Therefore, 5 mm is taken as the minimum value of the first preset spacing L1, so that after the heating device 40 is set in the first area 10, the heating device 40 can provide heat to the first pixel 31 to increase the temperature of the area where the first pixel 31 is located, thereby reducing the temperature difference between the first pixel 31 and the second pixel 32.

[0050] Specifically, the heat provided by the heating device 40 can be transferred to the pixels 30 of the first area 10, thereby adjusting the temperature of the area where the pixels 30 are located in the first area 10. By arranging the heating device 40 in the first area 10, when some pixels 30 in the first area 10 and the second area 20 emit light, the heating device 40 located in the first area 10 can heat the first pixel 31, so that the temperature of the first pixel 31 increases, and the increased temperature is the first temperature T1, so that the absolute value of the difference between the first temperature T1 and the second temperature T2 |△T1| is less than 1°C, so that there is a smaller temperature difference between the first pixel 31 and the second pixel 32, the difference in luminous brightness between the first pixel 31 and the second pixel 32 is reduced, the uniformity of luminous brightness between the first area 10 and the second area 20 is improved, and the display effect of the display panel 100 is improved.

[0051] The technical solution of the embodiment of the present invention is to set a heating device in at least the first zone, and the heating device can provide heat for the pixels in the first zone to adjust the temperature of the pixels in the first zone, so that the pixels with a smaller spacing in the first zone can have a smaller temperature difference, thereby improving the display uniformity of each pixel in the first zone; at the same time, when the distance between the first pixel in the first zone in a light-emitting state and the second pixel in the second zone in a light-emitting state is greater than the first preset spacing, the first pixel in the first zone is heated by controlling the heating device in the first zone, and the temperature of the first pixel is increased to the first temperature, so that the absolute value of the difference between the first temperature of the first pixel and the second temperature of the second pixel is less than 1°C, so that there is a smaller temperature difference between the first pixel and the second pixel, the difference in luminous brightness between the first pixel and the second pixel is reduced, the luminous brightness uniformity of the first zone and the second zone is improved, and the display effect of the display panel is improved.

[0052] Optional, continue to refer to Figure 2 , in a direction parallel to the display surface of the display panel 100, the temperature difference at the area where two pixels 30 with a second preset interval L2 are located in the first area 10 is △T2. Wherein, |△T2|≤|△T1|.

[0053] The second preset spacing L2 is a fixed value. In an optional embodiment, the second preset spacing L2 may be in the range of 3mm≤L2≤6mm. For example, the second preset spacing L2 is 5mm, and may be other values, which are not specifically limited here.

[0054] Specifically, when the distance between a pixel 30 in the first area 10 in the light-emitting state and another pixel 30 in the first area 10 in the light-emitting state is less than the second preset spacing L2, the absolute value of the temperature difference between the two pixels is less than 1°C. When the distance between a pixel 30 in the first area 10 in the light-emitting state and another pixel 30 in the first area 10 in the light-emitting state is greater than or equal to the second preset spacing L2, the absolute value of the temperature difference between the two pixels is greater than or equal to 1°C. By arranging the heating device 40 in the first area 10, the heating device 40 can heat the pixel 30 with a lower temperature, so that the absolute value of the temperature difference at the area where the two pixels 30 with the second preset spacing L2 are located |△T2|≤|△T1|, so that the two pixels 30 with the second preset spacing L2 in the first area 10 have a smaller difference in temperature or the same temperature, so as to reduce the temperature difference causing the two pixels 30 to have different light-emitting brightness, improve the uniformity of the light-emitting brightness in the first area 10, and improve the display effect of the display panel 100.

[0055] Among them, when the distance between a pixel 30 in the first area 10 in the light-emitting state and another pixel 30 in the first area 10 in the light-emitting state is less than 3 mm, the absolute value of the temperature difference between the two pixels is less than 1°C, the luminous brightness of the pixels is relatively close, and the luminous brightness of the two pixels 30 can be made uniform without the need for the heating device 40 to generate heat. When the distance between a pixel 30 in the first area 10 in the light-emitting state and another pixel 30 in the first area 10 in the light-emitting state is greater than or equal to 3 mm, the absolute value of the temperature difference between the two pixels is greater than or equal to 1°C, the luminous brightness of the pixels 30 is relatively different, and the heating device 40 needs to be used to heat the pixel 30 with a lower temperature to reduce the temperature difference between the two pixels 30, thereby balancing the luminous brightness of the two pixels 30. When the distance between a pixel 30 in the first zone 10 that is in a light-emitting state and another pixel 30 in the first zone 10 that is in a light-emitting state is greater than 6 mm, directly reducing the temperature difference between the two pixels 30 by the heating device 40 may cause the absolute value of the temperature difference between two pixels 30 with a second preset distance L2 located between the two pixels 30 to be greater than 1°C. Therefore, by setting the first preset spacing L2 to be within the range of 3 mm to 6 mm, any two pixels 30 with the first preset spacing L2 in the first zone 10 have a small temperature difference or no difference, so that the temperature difference between the two pixels 30 with a smaller spacing remains small, and the luminous brightness remains similar; there may still be a large difference in temperature between the two pixels 30 with a larger spacing, resulting in a large difference in the luminous brightness of the pixels 30, but there is a small temperature difference between the pixels 30 with the second preset spacing L2 between the two pixels 30, so that the temperature of the two pixels 30 can be slowly transitioned, and then the display brightness of the two pixels 30 is slowly transitioned, avoiding the problem of sudden brightness changes, reducing the brightness difference between adjacent pixels 30 in the first zone 10, and improving the display effect of the display panel 100.

[0056] It is understandable that the above is only an exemplary description of the location of the heating device 40. In addition, the arrangement of the heating device 40 can also be set according to actual needs, for example, two adjacent heating devices 40 have a fixed distance, etc., which is not specifically limited here. The following is a typical example to illustrate the arrangement of the heating device 40 in the first zone 10.

[0057] Optionally, Figure 6 A schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention is shown as follows: Figure 6As shown, in the direction (X1 / X2) from the first area 10 to the second area 20, any three adjacent heating devices 40 are respectively the first sub-heating device 41, the second sub-heating device 42 and the third sub-heating device 43; the distance between the first sub-heating device 41 and the second sub-heating device 42 is the first distance l1, and the distance between the second sub-heating device 42 and the third sub-heating device 43 is the second distance l2. The first distance l1 is smaller than the second distance l2.

[0058] Specifically, in the direction (X1 / X2) from the first zone 10 to the second zone 20, the heat generated by the first pixel 31 in the first zone 10 that is closer to the second zone 20 when working needs to be gradually transmitted to the edge of the display panel 100 through the adjacent pixel 30, and the heat dissipation efficiency is low. The heat generated by the pixel 30 in the first zone 10 that is close to the edge of the display panel 100 when working can be directly dissipated through the edge of the display panel 100, and the heat dissipation efficiency is higher. Therefore, the temperature difference between the first pixel 31 itself that is closer to the second zone 20 and the temperature of the second pixel 32 itself in the second zone 20 is smaller, and the temperature difference between the first pixel 31 itself that is closer to the edge of the display panel 100 and the temperature of the second pixel 32 itself is larger. Therefore, by setting the distance between two adjacent heating devices 40 to gradually increase in the direction from the first zone 10 to the second zone 20, the heating device 40 provides less heat to the part of the pixels 30 in the first zone 10 that is closer to the second zone 20, and the heating device 40 provides more heat to the part of the pixels 30 in the first zone 10 that is closer to the edge, so as to reduce the temperature difference between the area where the first pixel 31 in the first zone 10 is located and the area where the second pixel 32 in the second zone 20 is located, reduce the temperature difference between the first zone 10 and the second zone 20, improve the uniformity of the luminous brightness of the pixels 30 in the first zone 10 and the second zone 20, and improve the display effect of the display panel 100.

[0059] It should be noted that the above description is only based on the case where the heating device 40 is provided in the first zone 10 and the heating device 40 is not provided in the second zone 20. In the embodiment of the present invention, the heating device 40 may also be provided in the second zone 20, and the specific arrangement method may be determined according to actual needs, and the embodiment of the present invention does not specifically limit this.

[0060] In an optional embodiment, Figure 7 A schematic diagram of a top view structure of another display panel provided in an embodiment of the present invention is shown in FIG. Figure 7 As shown, the heating device 40 includes a first heating device 441 and a second heating device 442 ; the first heating device 441 is located in the first zone 10 , and the second heating device 442 is located in the second zone 20 .

[0061] Specifically, by setting a first heating device 441 in the first zone 10, on the basis of reducing the temperature difference between the first temperature of the first pixel 31 and the second temperature of the second pixel 32 through the heat provided by the first heating device 441, by setting a second heating device 442 in the second zone 20, the second heating device 442 can heat at least part of the pixels 30 in the second zone 20 to reduce the temperature difference between different pixels 30 in the second zone 20, that is, reduce the temperature difference between each pixel 30 in the second zone 20, improve the uniformity of the luminous brightness in the second zone 20, and improve the display effect of the display panel 100.

[0062] Optional, Figure 8 A schematic diagram of a top view of a display panel provided by an embodiment of the present invention is shown. Fig. 9 A schematic diagram of a top view of another display panel provided by an embodiment of the present invention, Fig.10 A schematic diagram of a top view of another display panel provided in an embodiment of the present invention, referring to Figure 8-Figure 10 , the pixels 30 in the same row constitute a pixel row 331, and the pixels 30 in the same column constitute a pixel column 332. In the direction from the first area 10 to the second area 20, the number of pixels 30 between two adjacent heating devices 40 in the same pixel row 331 gradually increases, and / or, in the direction from the first area 10 to the second area 20, the number of pixels 30 between two adjacent heating devices 40 in the same pixel column 332 gradually increases.

[0063] Specifically, Figure 8 As shown, when the arrangement direction (X1 / X2) of the first area 10 and the second area 20 is parallel to the arrangement direction of the pixel column 332, the temperature of the area where the pixels 30 in the light-emitting state are arranged in sequence gradually increases in the direction from the first area 10 to the second area 20. Therefore, the number of pixels 30 between two adjacent heating devices 40 in the same pixel row 331 can be gradually increased in the direction (X1 / X2) from the first area 10 to the second area 20, so that the heat provided by the heating device 40 to the pixels 30 in the direction from the first area 10 to the second area 20 is gradually reduced, thereby balancing the temperature difference inside the first area 10, inside the second area 20, and between the first area 10 and the second area 20, so that the temperature between the two adjacent pixels 30 in the first area 10 and the second area 20, or the temperature between two pixels 30 with a preset distance is kept consistent or close, so as to prevent the problem that the temperature of the areas where the pixels 30 at different positions are located is different, resulting in different luminous brightness of different pixels 30, and improve the uniformity of the luminous brightness of each pixel 30, thereby improving the display effect of the display panel 100.

[0064] Correspondingly, such as Fig. 9As shown, when the arrangement direction (X3 / X4) of the first area 10 and the second area 20 is parallel to the arrangement direction of the pixel row 331, the temperature of the area where the pixels 30 in the light-emitting state are arranged in sequence in the direction from the first area 10 to the second area 20 gradually increases. Therefore, the number of pixels 30 between two adjacent heating devices 40 in the same pixel column 332 can be gradually increased in the direction from the first area 10 to the second area 20, so that in the direction (X3 / X4) from the first area 10 to the second area 20, the heat provided by the heating device 40 to the pixel 30 gradually decreases, thereby balancing the temperature difference inside the first area 10, inside the second area 20, and between the first area 10 and the second area 20, so that the temperature between two adjacent pixels 30 or two pixels 30 with a preset distance in the first area 10 and the second area 20 remains consistent or close, preventing the problem that the temperature of the areas where the pixels 30 at different positions are located is different, resulting in different luminous brightness of different pixels 30, improving the uniformity of the luminous brightness of each pixel 30, and thus improving the display effect of the display panel 100.

[0065] Correspondingly, such as Fig.10 As shown, when the arrangement direction of the first area 10 and the second area 20 includes a direction (X1 / X2) parallel to the arrangement direction of the pixel row 331, and a direction (X3 / X4) parallel to the arrangement direction of the pixel row 331, the temperature of the area where the pixels 30 are arranged in sequence gradually increases in the direction (X1 / X2 / X3 / X4) from the first area 10 to the second area 20. Therefore, in the direction (X1 / X2) from the first area 10 to the second area 20, the number of pixels 30 between two adjacent heating devices 40 in the same pixel row 331 is gradually increased, so that in the direction from the first area 10 to the second area 20, the heat provided by the heating device 40 to the pixels 30 is gradually reduced, thereby balancing the temperature differences inside the first area 10, inside the second area 20, and between the first area 10 and the second area 20 in the direction (X1 / X2). At the same time, in the direction (X3 / X4) from the first zone 10 to the second zone 20, the number of pixels 30 between two adjacent heating devices 40 in the same pixel column 332 is gradually increased, so that in the direction (X3 / X4) from the first zone 10 to the second zone 20, the heat provided by the heating device 40 to the pixel 30 is gradually reduced, thereby balancing the temperature differences inside the first zone 10, inside the second zone 20, and between the first zone 10 and the second zone 20 in the direction (X3 / X4), so that the temperatures of two adjacent pixels 30 in the first zone 10 and the second zone 20 or two pixels 30 with a preset spacing are kept consistent or close, preventing the problem that different pixels 30 have different luminous brightness due to different temperatures in the areas where pixels 30 at different positions are located, thereby improving the uniformity of the luminous brightness of each pixel 30, and thereby improving the display effect of the display panel 100.

[0066] It should be noted that the above only describes the arrangement of the heating device 40 in the display panel 100. The amount of heat that the heating device 40 can provide is related to the parameters of the heating device 40 itself and the signal received by the heating device 40. Figure 2 , at least some of the heating devices 40 have different resistance values.

[0067] The heating power of the heating device 40 is directly proportional to the resistance value of the heating device 40 and the current flowing through the heating device 40 .

[0068] Specifically, when the display panel 100 displays a picture, when the distance between a first pixel 31 in the first area 10 in the light-emitting state and a second pixel 32 in the light-emitting state is greater than the first preset spacing L1, the first pixel 31 is used as the first first pixel; when the distance between another first pixel 31 in the first area 10 in the light-emitting state and the second pixel 32 in the light-emitting state is greater than the first preset spacing L1, the other first pixel is used as the second first pixel; the temperature difference between the first first pixel and the second first pixel is greater than or equal to 1°C. After the heating device 40 is provided in the first area 10, the resistance value of the heating device 40 for adjusting the temperature of the first first pixel can be set to be less than the resistance value of the heating device 40 for adjusting the temperature of the second first pixel, so that when the same current signal is provided to the heating device 40, the heating device 40 can provide less heat to the first first pixel and more heat to the second first pixel, so that the absolute value of the adjusted temperature difference between the first first pixel and the second first pixel is less than 1°C, so as to balance the temperature difference generated when each pixel 30 displays light, and improve the temperature uniformity of the area where each pixel 30 is located. In this way, by setting the resistance value of at least part of the heating device 40 to be different, the heating device 40 can provide different heat for the pixel 30 to balance the temperature of the area where each pixel 30 is located in the first area 30, improve the temperature uniformity of the display panel 100, and further improve the display effect of the display panel 100.

[0069] Accordingly, when the display panel 100 is displaying a picture, when the distance between a first pixel 31 in the first area 10 in the light-emitting state and the second pixel 32 in the light-emitting state is greater than the first preset spacing L1, the first pixel is the third first pixel; when the distance between another first pixel 31 in the first area 10 in the light-emitting state and the second pixel 32 in the light-emitting state is greater than the first preset spacing L1, the other first pixel is the fourth first pixel; the absolute value of the temperature difference between the third first pixel and the fourth first pixel is less than 1°C. After the heating device 40 is provided in the first area 10, the resistance value of the heating device 40 for adjusting the temperature of the third first pixel can be set to be consistent with or the same as the resistance value of the heating device 40 for adjusting the temperature of the fourth first pixel, so that when the same current signal is provided to the heating device 40, the heating device 40 can provide the same heat to the third first pixel and the fourth first pixel, so that the absolute value of the adjusted temperature difference between the third first pixel and the fourth first pixel is still less than 1°C, thereby improving the temperature uniformity of the area where each pixel 30 is located.

[0070] Optional, continue to refer to Figure 2 , along the direction (X1 / X2 / X3 / X4) from the second area 20 to the first area 10, the resistance value of the heating device 40 gradually increases.

[0071] Specifically, when the display panel 100 displays a picture, the temperature of the area where the pixels 30 are in the luminous state and arranged in sequence along the direction (X1 / X2 / X3 / X4) from the second area 20 to the first area 10 is gradually reduced. Therefore, in the direction (X1 / X2 / X3 / X4) from the second area 20 to the first area 10, by setting the resistance value of the heating device 40 to gradually increase, the same current signal is provided to the heating devices 40 in the first area 10, or, when the current signal gradually increases along the direction from the second area 20 to the first area 10, the heat provided by each heating device 40 gradually increases in the direction (X1 / X2 / X3 / X4) from the second area 20 to the first area 10, thereby balancing the temperature difference generated when each pixel 30 in the first area 10 displays and emits light, improving the uniformity of temperature distribution in the first area 10 and between the first area 10 and the second area, improving the uniformity of the luminous brightness of the display panel 100, and thus improving the display effect of the display panel 100.

[0072] The resistance value of the heating device 40 is related to parameters such as the material, shape and size of the heating device 40 itself, and only one or more of these parameters may be changed to make the heating device 40 have different resistance values. Fig.11 A schematic diagram of a top view structure of another display panel provided by an embodiment of the present invention is shown as follows: Fig.11As shown, the heating device 40 is located between two adjacent pixels 30. In the first direction (X1 / X2), there is a spacing d1 between two adjacent pixels 30, and the width of the heating device 40 is d2; wherein d2≤d1. In the second direction Y, each heating device 40 has a corresponding length; along the direction from the second area 20 to the first area 10, the length of the heating device 40 gradually increases; the second direction Y is parallel to the display surface of the display panel 100 and intersects with the first direction.

[0073] Specifically, in the first direction (X1 / X2), by setting the width d2 of the heating device 40 to be less than or equal to the spacing d1 between two adjacent pixels 30, the heating device 40 is prevented from colliding with the light-emitting element in the pixel 30 due to its wide width, thereby ensuring the normal light emission of the pixel 30. Since the resistance value is positively correlated with the length, by setting each heating device 40 to have the same width d2 in the first direction (X1 / X2), in the direction (X1 / X2) from the second area 20 to the first area 10, the length of the heating device 40 is gradually increased, so that in the direction (X1 / X2) from the second area 20 to the first area 10, the resistance value of the heating device 40 is gradually increased.

[0074] In the above, only the length of each heating device 40 is adjusted so that each heating device 40 has a different resistance value. In an optional embodiment, each heating device 40 may have the same cross-sectional area and length, and the resistance value of the heating device 40 may be gradually increased by gradually increasing the material resistivity of the heating device 40 in the direction from the second area 20 to the first area 10. In other optional embodiments, other parameters of the heating device 40 may be adjusted to gradually increase the resistance value of the heating device 40, which is not specifically limited here.

[0075] In an alternative embodiment, Fig.12 A schematic diagram of a pixel structure provided by an embodiment of the present invention is shown in FIG. Fig.12 As shown, the pixel 30 at least includes a light emitting element 301 ; the heating device 40 is connected in parallel with the light emitting element 301 .

[0076] The light emitting element 301 includes a light emitting diode (LED) and the like, and can be configured according to actual needs, which is not specifically limited here.

[0077] Specifically, the light-emitting element 301 includes an anode and a cathode, and the two ends of the heating device 40 are electrically connected to the anode and the cathode respectively. At this time, the driving circuit 120 electrically connected to the light-emitting element 301 can simultaneously provide a current signal to the heating device 40 and a driving signal to the light-emitting element 301. The driving circuit 120 can determine the output total current signal according to the resistance value of the heating device 40 and the internal resistance of the light-emitting element 301, so that after the total current signal is divided by the heating device 40 and the light-emitting element 301, the current signal flowing through the light-emitting element 301 can ensure the current light-emitting demand of the light-emitting element 301, and the current signal flowing through the heating device 40 can enable the heating device 40 to provide the required heating power. In this way, by setting the heating device 40 and the light-emitting element 301 to be connected in parallel, so that the driving circuit 120 can simultaneously provide electrical signals to the heating device 40 and the light-emitting element 301, the utilization rate of the driving circuit 120 is improved, and the number of circuit structures in the display panel 100 is reduced, and the structure of the display panel 100 is simplified.

[0078] The above description is only based on the example that the driving circuit 210 is multiplexed as the control circuit for controlling the heating device 40. A separate control circuit can also be provided for the heating device 40 in the display panel 100. Optionally, Fig.13 A partial cross-sectional structural diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Fig.13 As shown, the display panel 100 further includes a plurality of heating control circuits 50. Each heating control circuit 50 is electrically connected to each heating device 40, and the heating control circuit 50 is used to control the heating power of the heating device 40.

[0079] Among them, the heating control circuit 50 includes devices such as transistors. At least part of the structure of the heating control circuit 50 can be set in the same layer and process as part of the structure in the driving circuit 120 of the pixel 30. It can be set according to actual needs and is not specifically limited here.

[0080] Specifically, the heating control circuit 50 can adjust the electrical signal provided to the heating device 40 according to the setting mode of the heating device 40 or the heat required by the pixel 30. The heating device 40 generates heat under the action of the electrical signal, thereby providing heat to the pixel 30. The larger the electrical signal provided by the heating control circuit 50, the greater the heating power provided by the heating device 40, and the more heat provided by the heating device 40. The heating adjustment circuit 50 adjusts the heating power of the heating device 40 by adjusting the electrical signal provided to the heating device 40. In this way, the heating control circuit 50 is provided to provide the heating device 40 with a corresponding electrical signal according to the heating power required by the heating device 40, so that the heating device 40 can provide the corresponding heating power, improve the temperature control accuracy of the area where the pixel 30 is located in the first area 10, improve the uniformity of the temperature distribution of the first area 10 and the second area 20, and improve the display effect of the display panel 100. Among them, the electrical signal includes a current signal or a voltage signal.

[0081] In an optional embodiment, when the heating power is related to the resistance value of the heating device 40 and the current signal flowing through the heating device 40, the current signal provided by at least some of the heating control circuits 50 is different.

[0082] Specifically, when the display panel 100 displays a picture, when the distance between a first pixel 31 in the first area 10 in a light-emitting state and a second pixel 32 in a light-emitting state is greater than the first preset spacing L1, the first pixel 31 is used as the fifth first pixel; when the distance between another first pixel 31 in the first area 10 in a light-emitting state and the second pixel 32 in a light-emitting state is greater than the first preset spacing L1, the other first pixel is used as the sixth first pixel; the temperature difference between the fifth first pixel and the sixth first pixel is greater than or equal to 1°C. After the heating device 40 is set in the first area 10, each heating device 40 set in the first area 10 has the same resistance value, the heating device 40 used to adjust the temperature of the area where the fifth first pixel is located is the fifth heating device, the heating device 40 used to adjust the temperature of the area where the sixth first pixel is located is the sixth heating device, the heating control circuit 50 electrically connected to the fifth heating device is the fifth heating control circuit, and the heating control circuit 50 electrically connected to the sixth heating device is the sixth heating control circuit. By setting the current signal provided by the fifth heating control circuit to be smaller than the current signal provided by the sixth heating control circuit, so that the heating power provided by the fifth heating device is smaller than the heating power of the sixth heating device, the fifth heating device can provide less heat to the fifth first pixel, and the sixth heating device can provide more heat to the sixth first pixel, so that the absolute value of the adjusted temperature difference between the fifth first pixel and the sixth first pixel is less than 1°C, so as to balance the temperature difference generated when each pixel 30 displays and emits light. In this way, by setting at least part of the heating control circuit 50 to provide different current signals, the heating device 40 can provide different heat to the pixel 30, so as to balance the temperature of the area where each pixel 30 is located in the first area 30, improve the temperature uniformity of the display panel 100, and then improve the display effect of the display panel 100.

[0083] Correspondingly, when the display panel 100 displays a picture, when the distance between a first pixel 31 in the first area 10 in the light-emitting state and the second pixel 32 in the light-emitting state is greater than the first preset spacing L1, the first pixel is the seventh first pixel; when the distance between another first pixel 31 in the first area 10 in the light-emitting state and the second pixel 32 in the light-emitting state is greater than the first preset spacing L1, the other first pixel is the eighth first pixel; the absolute value of the temperature difference between the seventh first pixel and the eighth first pixel is less than 1°C. After the heating device 40 is set in the first area 10, each heating device 40 set in the first area 10 has the same resistance value, the heating device 40 used to adjust the temperature of the area where the seventh first pixel is located is the seventh heating device, the heating device 40 used to adjust the temperature of the area where the eighth first pixel is located is the eighth heating device, the heating control circuit 50 electrically connected to the seventh heating device is the seventh heating control circuit, and the heating control circuit 50 electrically connected to the eighth heating device is the eighth heating control circuit. By setting the current signal provided by the seventh heating control circuit to be equal to the current signal provided by the eighth heating control circuit, the heating power provided by the seventh heating device is made the same as the heating power of the eighth heating device, so that the heat provided by the seventh heating device to the seventh first pixel is the same as or close to the heat provided by the eighth heating device to the eighth first pixel, and the absolute value of the adjusted temperature difference between the seventh first pixel and the eighth first pixel is still less than 1°C, so as to balance the temperature difference generated when each pixel 30 displays light.

[0084] Optional, continue to refer to Figure 2 In the direction (X1 / X2 / X3 / X4) from the first area 10 to the second area 20, any two adjacent heating devices 40 are respectively the fourth sub-heating device 44 and the fifth sub-heating device 45; the current signal received by the fourth sub-heating device 44 is the first current signal I1, and the current signal received by the fifth sub-heating device 45 is the second current signal I2. The first current signal I1 is greater than the second current signal I2.

[0085] Specifically, when the display panel 100 is displaying an image, along the direction (X1 / X2 / X3 / X4) from the first area 10 to the second area 20, the temperature of the area where the pixels 30 that are in the luminous state and arranged sequentially are located gradually increases. Therefore, by setting the first current signal I1 to be greater than the second current signal I2, that is, in the direction (X1 / X2 / X3 / X4) from the first area 10 to the second area 20, the current signal provided by the heating control circuit 50 to the heating device 40 gradually decreases, so that the heating device 40 has the same resistance value, or, when the resistance value of the heating device 40 gradually decreases in the direction (X1 / X2 / X3 / X4) from the first area 10 to the second area 20, the heat provided by each heating device 40 gradually decreases, thereby balancing the temperature difference generated when each pixel 30 in the first area 10 displays and emits light, improving the uniformity of temperature distribution in the first area 10 and between the first area 10 and the second area, improving the uniformity of the luminous brightness of the display panel 100, and thereby improving the display effect of the display panel 100.

[0086] Optional, Fig.14 A partial cross-sectional structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Fig.14 As shown, the display panel 100 further includes a plurality of temperature measuring devices 60. Each temperature measuring device 60 is electrically connected to each heating control circuit 50, and the temperature measuring device 60 is used to obtain a temperature signal at the area where the temperature measuring device 60 is located. The heating control circuit 50 is used to control the heating power of each heating device 40 according to the temperature signal provided by the temperature measuring device 60.

[0087] The temperature measuring device 60 includes devices such as a temperature sensor, a thermistor or a thermocouple. The temperature measuring device 60 may partially overlap, not overlap or completely overlap with the area where the pixel 30 is located. It can be set according to actual needs and is not specifically limited here.

[0088] Specifically, by setting a temperature measuring device 60, the temperature measuring device 60 is located around the pixel 30. When the pixel 30 emits light, the light-emitting element or the driving circuit in the pixel 30 generates heat, and the heat can be transmitted to the temperature measuring device 60. The temperature of the area where the pixel 30 is located can be obtained through the temperature measuring device 60. The heating control circuit 50 calculates and determines the current signal to be provided to the heating device 40 according to the temperature signal fed back by the temperature measuring device 60 and the internal logic of the heating control circuit 50, so as to increase the temperature of the area where the first pixel is located in the first area 10 under the action of the heat provided by the heating device 40, thereby reducing the temperature difference between the first pixel and the second pixel. In this way, by setting the temperature measuring device 60, the heating control circuit 50 can adjust the heating power of the heating device 40 in real time according to the temperature signal measured in real time, improve the temperature adjustment accuracy, and then improve the temperature distribution uniformity of the first area 10 and the second area 20, and improve the display effect of the display panel 100.

[0089] It should be noted that the heating control circuit 50 may store a mapping relationship between a preset temperature and a pre-provided current signal, and the mapping relationship includes a table or a curve chart, etc. Based on the mapping relationship between the preset temperature and the pre-provided current signal, the pre-provided current signal corresponding to the temperature signal measured by the temperature measuring device 60 is used as the current signal provided by the heating control circuit 50 to the heating device 40. The control logic of the heating control circuit 50 controlling the heating power of the heating device according to the temperature signal provided by the temperature measuring device 60 can also be other, which is not specifically limited here.

[0090] In an optional embodiment, the heating device 40 can be reused as the temperature measuring device 60. In this way, the number of devices in the display panel 100 can be reduced, the structure of the display panel 100 can be simplified, and the manufacturing process of the display panel 100 can be reduced.

[0091] Based on the above embodiment, optionally, Fig.15 A schematic diagram of a bottom-up structure of a display panel provided by an embodiment of the present invention is shown in FIG. Fig.15 As shown, the display panel 100 further includes a heat dissipation structure 70 , and the heat dissipation structure 70 is at least located in the second area 20 .

[0092] The heat dissipation structure 70 includes metal materials with high thermal conductivity such as aluminum or heat dissipation materials such as silicone grease and graphite. The shape of the heat dissipation structure 70 can be set according to parameters such as the hardness of the material, which is not specifically limited here.

[0093] Specifically, the heat dissipation structure 70 can conduct the heat generated by the pixel 30 when it is working to the outside, so as to achieve temperature regulation of the area where the pixel 30 is located in the second area 20. By setting the heat dissipation structure 70 at least in the second area 20, when some pixels 30 in the first area 10 and the second area 20 emit light, the heat dissipation structure 70 located in the second area 20 can release the heat generated by the first pixel 31 when it is working, thereby reducing the temperature of the area where the first pixel 31 is located. The heating device 40 located in the first area 10 can heat the second pixel 32 in the first area 10 according to the temperature of the area where the first pixel 31 is located, so that the absolute value of the temperature difference between the first temperature T1 and the second temperature T2 is less than 1°C. Since the temperature of the first pixel 31 is reduced under the action of the heat dissipation structure 70, the absolute value of the difference between the first temperature T1 and the second temperature T2 can be less than 1°C when the heating device 40 in the first area 10 provides a lower heating power. Therefore, by setting the heat dissipation structure 70 in the second area 20, the heating power of the heating device 40 in the first area 10 can be reduced, and the energy utilization rate can be improved. At the same time, by providing the heat dissipation structure 70 , the temperature of the area where each pixel 30 is located in the first area 10 and the second area 20 can be reduced, preventing the working stability of the pixel 30 from being affected by excessive temperature, thereby improving the display effect of the display panel 100 .

[0094] It should be noted that the heat dissipation structure 70 may be located between two adjacent pixels 30, or in a portion of the film layer of the pixel 30, and the position of the heat dissipation structure 70 in the second area 20 may be set according to actual needs. Fig.16 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention, Fig.17 A schematic diagram of another display panel provided by an embodiment of the present invention, referring to Fig.16 and Fig.17 The display panel 100 also includes a driving substrate 110; the pixel 30 includes a light-emitting element 301 and a driving circuit 120 electrically connected to the light-emitting element 301; the driving substrate 110 includes the driving circuit 120; the light-emitting element 301 is located on one side of the driving substrate 110; and the heat dissipation structure 70 is located on a surface of the driving substrate 110 that is away from the light-emitting element 301.

[0095] Among them, the driving substrate 110 includes a flexible substrate or a rigid substrate; the flexible substrate may include a flexible organic material layer such as PI or PP, so that the driving substrate has the characteristics of being bendable and windable; the rigid driving substrate may include a hard inorganic material layer such as glass, so that the driving substrate has a sufficiently strong supporting capacity. The driving circuit 120 can drive the light-emitting element 301 to emit light. The driving circuit 120 may include active devices and / or passive devices, the active devices include transistors, etc., and the passive devices include resistors, capacitors, inductors, etc. On the premise that the driving circuit 120 can drive the light-emitting element 301 to display light, the embodiment of the present invention does not limit the specific structure of the driving circuit 120.

[0096] Specifically, by setting the heat dissipation structure 70 on the side surface of the driving substrate 10 away from the light-emitting element 301, when the light-emitting element 301 in the pixel 30 emits light, the heat generated by the pixel 30 during operation can be transmitted to the heat dissipation structure 70 through the driving substrate 110, and then the heat generated by the pixel 30 is released through the heat dissipation structure 70 to reduce the temperature of the area where the pixel 30 is located.

[0097] In an optional embodiment, Fig.18 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention, Fig.19 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention, referring to Fig.18 and Fig.19 , the heat dissipation structure 70 is also located in the first area 10 .

[0098] Specifically, by providing the heat dissipation structure 70 in both the first zone 10 and the second zone 20, the temperature of the area where each pixel 30 is located in the first zone 10 and the temperature of the area where each pixel 30 is located in the second zone 20 are reduced under the action of the heat dissipation structure 70, thereby preventing the operation of the pixel 30 from being affected by excessively high temperature, thereby improving the working reliability and stability of the pixel 30.

[0099] In an optional embodiment, Fig. 20 A schematic diagram of a heat dissipation structure provided by an embodiment of the present invention, referring to Figure 5 and Fig. 20 The heat dissipation structure 70 includes a heat dissipation layer. The width h2 of the heat dissipation layer located in the second area 20 is greater than the width h1 of the heat dissipation layer located in the first area 10 .

[0100] The extension direction of the heat dissipation structure 70 may be parallel to the extension direction of the pixel rows, or parallel to the extension direction of the pixel columns, and may be set according to actual needs, which is not specifically limited here.

[0101] Specifically, in the direction (X1 / X2) from the first zone 10 to the second zone 20, the heat generated by the first pixel 31 in the first zone 10 that is closer to the second zone 20 when working needs to be gradually transmitted to the edge of the display panel 100 through the adjacent pixel 30, and the heat dissipation efficiency is low. The heat generated by the pixel 30 in the first zone 10 that is close to the edge of the display panel 100 when working can be directly dissipated through the edge of the display panel 100, and the heat dissipation efficiency is higher. Therefore, the temperature difference between the first pixel 31 itself that is closer to the second zone 20 and the temperature of the second pixel 32 itself in the second zone 20 is smaller, and the temperature difference between the first pixel 31 itself that is closer to the edge of the display panel 100 and the temperature of the second pixel 32 itself is larger. Therefore, by setting the width h2 of the heat dissipation layer in the second area 20 to be greater than the width h1 of the heat dissipation layer in the first area 10, the second area 20 has a better heat dissipation effect. The heat in the first area 10 cannot be diffused to the edge in time, and the temperature of the pixels themselves can be released through the heat dissipation layer with a smaller width h2, and the heat generated by the pixels 30 close to the edge can be directly released to the outside through the edge, thereby reducing the temperature difference in the areas where the pixels 30 in the first area 10 are located.

[0102] It should be noted that the width h2 of the heat dissipation layer located in the second zone 20 is greater than the width h1 of the heat dissipation layer located in the first zone 10. The overall width h2 of the heat dissipation layer located in the second zone 20 may be greater than the overall width h1 of the heat dissipation layer located in the first zone 10. The width h2 of the heat dissipation layer located in the second zone 20 in the same pixel row may be greater than the width h1 of the heat dissipation layer located in the first zone 10. The width h2 of the heat dissipation layer located in the second zone 20 in the same pixel column may be greater than the width h1 of the heat dissipation layer located in the first zone 10, and so on. It can be set according to actual needs and is not specifically limited here.

[0103] Optional, Fig.21 A schematic diagram of another heat dissipation structure provided by an embodiment of the present invention is shown in FIG. Fig.21 As shown, along the direction (X1 / X2) from the second area 20 to the first area 10, the width of the heat dissipation layer gradually decreases.

[0104] Specifically, along the direction (X1 / X2) from the second area 20 to the first area 10, the temperature of the area where the pixels 30 in the light-emitting state are arranged in sequence in the first area 10 gradually decreases. Therefore, along the direction (X1 / X2) from the second area 20 to the first area 10, by setting the width of the heat dissipation layer to gradually decrease, the heat dissipation capacity provided by the heat dissipation layer in the direction (X1 / X2) from the second area 20 to the first area 10 is getting lower and lower, and the temperature difference of the area where each pixel 30 is located in the first area 10 and the second area 20 is reduced to balance the temperature difference between the first area 10 and the second area 20. On this basis, the heating power provided by the heating device 40 can be reduced to improve energy utilization.

[0105] It is understandable that the above description is only based on the example of adjusting the width of the heat dissipation layer. In other optional embodiments, the thickness of the heat dissipation layer may also be adjusted. Fig. 22 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention, Fig.23 A schematic diagram of another display panel provided by an embodiment of the present invention, referring to Fig. 22 and Fig.23 , along the direction (X1 / X2) from the second area 20 to the first area 10, the thickness of the heat dissipation layer gradually decreases.

[0106] Specifically, along the direction (X1 / X2) from the second area 20 to the first area 10, the temperature of the area where the pixels 30 in the light-emitting state are arranged in sequence in the first area 10 gradually decreases. Therefore, along the direction (X1 / X2) from the second area 20 to the first area 10, by setting the thickness of the heat dissipation layer to gradually decrease, the heat dissipation capacity provided by the heat dissipation layer in the direction (X1 / X2) from the second area 20 to the first area 10 is getting lower and lower, and the temperature difference of the area where each pixel 30 is located in the first area 10 and the second area 20 is reduced to balance the temperature difference between the first area 10 and the second area 20. On this basis, the heating power provided by the heating device 40 can be reduced to improve energy utilization.

[0107] In another alternative embodiment, Fig.24 A schematic diagram of another heat dissipation structure provided by an embodiment of the present invention is shown in FIG. Fig.24 As shown, the heat dissipation structure 70 includes heat sinks; along the direction from the second zone 20 to the first zone 10, any three heat sinks arranged in sequence and adjacent to each other are the first heat sink 71, the second heat sink 72 and the third heat sink 73; the distance between the first heat sink 71 and the second heat sink 72 is the first heat dissipation spacing H1, and the distance between the second heat sink 72 and the third heat sink 73 is the second heat dissipation spacing H2.

[0108] The first heat dissipation distance H1 is smaller than the second heat dissipation distance H2.

[0109] Specifically, in the direction (X1 / X2) from the second zone 20 to the first zone 10, the heat generated by the first pixel 31 closer to the second zone 20 in the first zone 10 when working needs to be gradually transmitted to the edge of the display panel 100 through the adjacent pixel 30, and the heat dissipation efficiency is low. The heat generated by the pixel 30 close to the edge of the display panel 100 in the first zone 10 when working can be directly dissipated through the edge of the display panel 100, and the heat dissipation efficiency is higher. Therefore, the temperature difference between the first pixel 31 itself closer to the second zone 20 and the temperature of the second pixel 32 itself in the second zone 20 is smaller, and the temperature difference between the first pixel 31 itself closer to the edge of the display panel 100 and the temperature of the second pixel 32 itself is larger. Therefore, by gradually increasing the distance between two adjacent heat sinks in the direction from the second zone 20 to the first zone 10, the ability of the heat sink to release heat gradually decreases in the direction from the second zone 20 to the first zone 10, so as to reduce the temperature difference between the first pixel 31 in the first zone 10 and the second pixel 32 in the second zone 20, balance the temperature difference between the first zone 10 and the second zone 20, reduce the heating power provided by the heating device 40, and improve energy utilization.

[0110] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes a display panel provided by any embodiment of the present invention. Therefore, the display device has the technical features of the display panel provided by the embodiment of the present invention, and can achieve the beneficial effects of the display panel provided by the embodiment of the present invention. The similarities can be referred to the above description of the display panel provided by the embodiment of the present invention, and will not be repeated here.

[0111] For example, Fig.25 A schematic diagram of a display device according to an embodiment of the present invention is shown in FIG. Fig.25 As shown, the display device 200 includes the display panel 100 provided in the embodiment of the present invention. The display device 200 provided in the embodiment of the present invention can be any electronic product with a display function, including but not limited to the following categories: mobile phones, televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc., and the embodiment of the present invention does not specifically limit this.

[0112] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: Districts 1 and 2; The display panel further comprises a plurality of pixels arranged in an array, and a plurality of heating devices; the heating devices are at least located in the first area; When some of the pixels in the first area and the second area emit light, the pixels in the first area that are in the light-emitting state are first pixels, and the pixels in the second area that are in the light-emitting state are second pixels; the temperature of the area where the first pixels are located is a first temperature, the temperature of the area where the second pixels are located is a second temperature, and the difference between the first temperature and the second temperature is △T1; along a first direction, the distance between the first pixel and the second pixel is greater than a first preset spacing, and the first direction is the arrangement direction of the first area and the second area; Among them, |△T1|<1℃.

2. The display panel according to claim 1, characterized in that: In a direction parallel to the display surface of the display panel, the temperature difference between the areas where two pixels with a second preset interval in the first area are located is △T2; Among them, |△T2|≤|△T1|.

3. The display panel according to claim 2, characterized in that: The second preset distance is L2, wherein 3mm≤L2≤6mm.

4. The display panel according to claim 1, characterized in that: The first preset distance is L1, where L1≥5mm.

5. The display panel according to claim 1, characterized in that: The first region at least partially surrounds the second region.

6. The display panel according to claim 5, characterized in that: In the direction from the first area to the second area, any three of the heating devices arranged in sequence and adjacent to each other are respectively a first sub-heating device, a second sub-heating device and a third sub-heating device; a distance between the first sub-heating device and the second sub-heating device is a first distance, and a distance between the second sub-heating device and the third sub-heating device is a second distance; Wherein, the first distance is smaller than the second distance.

7. The display panel according to claim 1, characterized in that: The heating device includes a first heating device and a second heating device; the first heating device is located in the first zone, and the second heating device is located in the second zone.

8. The display panel according to claim 7, characterized in that: The pixels located in the same row constitute a pixel row, and the pixels located in the same column constitute a pixel column; In a direction from the first area to the second area, the number of pixels between two adjacent heating devices in the same pixel row gradually increases; And / or, along the direction from the first area to the second area, the number of pixels between two adjacent heating devices in the same pixel column gradually increases.

9. The display panel according to claim 1, characterized in that: At least some of the heating devices have different resistance values.

10. The display panel according to claim 9, characterized in that: In a direction from the second area to the first area, the resistance value of the heating device gradually increases.

11. The display panel according to claim 10, characterized in that: The heating device is located between two adjacent pixels; In the first direction, there is a distance d1 between two adjacent pixels, and the width of the heating device is d2; wherein d2≤d1; In the second direction, each of the heating devices has a corresponding length; in the direction from the second area to the first area, the length of the heating device gradually increases; the second direction is parallel to the display surface of the display panel and intersects with the first direction.

12. The display panel according to claim 1, characterized in that: Also includes: multiple heating control circuits; Each of the heating control circuits is electrically connected to each of the heating devices, and the heating control circuit is used to control the heating power of the heating device.

13. The display panel according to claim 12, characterized in that: At least some of the heating control circuits provide different current signals.

14. The display panel according to claim 13, characterized in that: In the direction from the first area to the second area, any two of the heating devices arranged in sequence and adjacent to each other are respectively a fourth sub-heating device and a fifth sub-heating device; The current signal received by the fourth sub-heating device is a first current signal, and the current signal received by the fifth sub-heating device is a second current signal; Wherein, the first current signal is greater than the second current signal.

15. The display panel according to claim 12, characterized in that: Also includes: A plurality of temperature measuring devices, each of the temperature measuring devices being electrically connected to each of the heating control circuits; The temperature measuring device is used to obtain a temperature signal at the area where the temperature measuring device is located; The heating control circuit is used to control the heating power of each of the heating devices according to the temperature signal provided by the temperature measuring device.

16. The display panel according to claim 1, characterized in that: The pixel at least includes a light emitting element; the heating device is connected in parallel with the light emitting element.

17. The display panel according to claim 1 or 7, characterized in that: Also includes: Heat dissipation structure; The heat dissipation structure is at least located in the second area.

18. The display panel according to claim 17, characterized in that: Also includes: Driver substrate; The pixel includes a light emitting element and a driving circuit electrically connected to the light emitting element; The driving substrate includes the driving circuit; The light emitting element is located on one side of the driving substrate; The heat dissipation structure is located on a surface of the driving substrate that is away from the light emitting element.

19. The display panel according to claim 17, characterized in that: The heat dissipation structure is also located in the first area.

20. The display panel according to claim 19, characterized in that: The heat dissipation structure comprises a heat dissipation layer; The width of the heat dissipation layer located in the second area is greater than the width of the heat dissipation layer located in the first area.

21. The display panel according to claim 20, characterized in that: In a direction from the second area to the first area, the width of the heat dissipation layer gradually decreases.

22. The display panel according to claim 19, characterized in that: The heat dissipation structure includes a heat sink; In the direction from the second area to the first area, any three adjacent heat sinks are respectively the first heat sink, the second heat sink and the third heat sink; the distance between the first heat sink and the second heat sink is the first heat sink spacing, and the distance between the second heat sink and the third heat sink is the second heat sink spacing; Wherein, the first heat dissipation distance is smaller than the second heat dissipation distance.

23. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 22.

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