Display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device, the display panel comprising a display area; the display panel further comprises a substrate; a plurality of sub-pixels, the sub-pixels being located in the display area and comprising a pixel circuit; the pixel circuit comprising a transistor, the transistor comprising an active layer; a heating structure being located in the display area and on one side of the substrate, and along the thickness direction of the display panel, part of the heating structure is arranged adjacent to the active layer. By arranging part of the heating structure adjacent to the active layer, the transistor in the pixel circuit is heated, the heating effect of the heating structure on the pixel circuit is improved, the heating effect of the display panel is ensured, and the display effect of the display panel is ensured.

Description

Technical Field

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

[0002] As the application fields of display panels gradually expand, new requirements are being placed on their performance. For example, display panels need to operate in low-temperature environments for extended periods, but low temperatures can significantly impact their response time and other performance characteristics. Therefore, to ensure the normal operation of display panels, measures must be taken to broaden the low-temperature operating range of display devices and guarantee their performance in low-temperature environments. Summary of the Invention

[0003] This invention provides a display panel and display device. By arranging a portion of the heating structure adjacent to the active layer, the transistors in the pixel circuit are heated, thereby improving the heating effect of the heating structure on the pixel circuit and ensuring the heating effect of the display panel.

[0004] In a first aspect, embodiments of the present invention provide a display panel, including a display area:

[0005] The display panel also includes:

[0006] Substrate;

[0007] Multiple sub-pixels are located in the display area, each sub-pixel including a pixel circuit; the pixel circuit includes a transistor, and the transistor includes an active layer;

[0008] A heating structure is located in the display area and on one side of the substrate, along the thickness direction of the display panel, and part of the heating structure is disposed adjacent to the active layer.

[0009] In a second aspect, embodiments of the present invention provide a display device including the display panel described in the first aspect.

[0010] The display panel provided in this embodiment of the invention includes a display area comprising multiple sub-pixels to ensure the display effect of the display panel. The display panel also includes a substrate and a heating structure, the heating structure being located on one side of the substrate and used to provide heat to the display panel. Further, each sub-pixel includes a pixel circuit, the pixel circuit including a transistor, and the transistor containing an active layer. Along the thickness direction of the display panel, a portion of the heating structure is disposed adjacent to the active layer, meaning the heating structure can provide heat to the pixel circuit, improving the heating effect of the heating structure on the pixel circuit, ensuring the heating effect of the display panel, and thus ensuring the display effect of the display panel. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of a sub-pixel structure provided in an embodiment of the present invention;

[0014] Figure 3 yes Figure 2 A schematic diagram of a cross-section along the A-A' direction;

[0015] Figure 4 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0016] Figure 5 yes Figure 4 A schematic diagram of a cross-section along the B-B' direction;

[0017] Figure 6 yes Figure 2 An enlarged schematic diagram of region D1 in the middle;

[0018] Figure 7 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0019] Figure 8 yes Figure 7 An enlarged schematic diagram of region D2 in the middle;

[0020] Figure 9 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0021] Figure 10 yes Figure 9 An enlarged schematic diagram of region D3 in the middle;

[0022] Figure 11 yes Figure 4 An enlarged schematic diagram of region D4 in the middle;

[0023] Figure 12 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0024] Figure 13 yes Figure 12 An enlarged schematic diagram of region D5 in the middle;

[0025] Figure 14This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0026] Figure 15 yes Figure 14 An enlarged schematic diagram of region D6 in the middle;

[0027] Figure 16 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0028] Figure 17 yes Figure 16 An enlarged schematic diagram of region D7 in the middle;

[0029] Figure 18 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0030] Figure 19 yes Figure 18 An enlarged schematic diagram of region D8 in the middle;

[0031] Figure 20 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0032] Figure 21 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0033] Figure 22 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0034] Figure 23 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention;

[0035] Figure 24 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a system, product, or device comprising a series of units is not necessarily limited to those steps or units explicitly listed, but may include other units not explicitly listed or inherent to such products or devices.

[0038] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of a sub-pixel structure provided in an embodiment of the present invention. Figure 3 yes Figure 1 A schematic diagram of a cross-section along the A-A' direction. Figure 4 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 5 yes Figure 3 A schematic diagram of a cross-section along the B-B' direction, for reference. Figures 1 to 5 This invention provides a display panel 10, which includes a display area 100. The display panel 10 further includes: a substrate 200; a plurality of sub-pixels 400 located in the display area 100, each sub-pixel 400 including a pixel circuit 300; each pixel circuit 300 including a transistor 310, each transistor 310 including an active layer 320; and a heating structure 500 located in the display area 100 and on one side of the substrate 200. Along the thickness direction of the display panel 10, a portion of the heating structure 500 is disposed adjacent to the active layer 320.

[0039] The display panel 10 includes a display area 100, which is used to implement the display function of the display panel 10. For example, refer to... Figure 1 As shown, the display panel 10 includes multiple sub-pixels 400 in the display area 100, and the display function of the display panel 10 is realized through the sub-pixels 400.

[0040] Specifically, the display panel 10 includes a substrate 200 and an array layer 210 located on one side of the substrate 200. The array layer 210 includes multiple alternating layers of insulating and metal layers, and includes pixel circuitry 300, which includes transistors 310. For example, see reference... Figures 2 to 5As shown, the array layer 210 may include a gate insulating layer 211, a buffer layer 212, an insulating layer 213, a planarization layer 214, a first insulating layer 215, and a second insulating layer 216, etc. Specifically, based on the specific implementation of the array layer 210, those skilled in the art can set it according to the actual situation, and no limitation is made here.

[0041] For details, please refer to Figures 2 to 5 As shown, the pixel circuit 300 includes a transistor 310, which includes an input electrode 313, a control electrode 312, and an output electrode 314. The control electrode 312 is electrically connected to the scan line 420, and the scan signal transmitted through the scan line 420 can control the on / off state of the transistor 310. The input electrode 311 is electrically connected to the data line 410, meaning the data signal transmitted through the data line 410 is input through the input electrode 311. The output electrode 313 is electrically connected to the first electrode 810, meaning the transistor 300 acquires the data signal through the input electrode 311 and transmits the data signal to the first electrode 810 through the active layer 320 and the output electrode 313. Furthermore, a second electrode 820 is also provided on the side of the first insulating layer 215 away from the first electrode 810. The first electrode 810 and the second electrode 820 are the pixel electrode and the common electrode, respectively. This embodiment of the invention does not impose specific limitations on this aspect.

[0042] Furthermore, the display panel 10 also includes a heating structure 500, which provides heat to the display panel 10, ensuring its normal display operation even in cold environments. Along the thickness direction of the display panel 10, the heating structure 500 is positioned adjacent to the active layer 320, meaning its relative position to the pixel circuit 300 is relatively close. This provides sufficient heat to the pixel circuit 300, ensuring its normal operation in cold environments. It should be noted that through heat radiation, while the heating structure 500 provides heat to the pixel circuit 300, the radiated heat also provides heat to the pixel openings, further ensuring the overall heating effect of the display panel 10.

[0043] Furthermore, along the thickness direction of the display panel 10, a portion of the heating structure 500 is disposed adjacent to the active layer 320, as shown in the reference diagram. Figure 2 In region C, the heating structure 500 and the active layer 320 do not overlap along the thickness direction and are arranged adjacent to each other. (Reference) Figure 4 and Figure 5The heating structure 500 can be positioned around the active layer 320 along its thickness direction, meaning that in this configuration, the heating structure 500 and the active layer 320 do not overlap along their thickness direction. In general, the heating structure 500 can be positioned in various ways, allowing for adaptive adjustments to its specific location while ensuring effective heating.

[0044] For example, the film layer of the heating structure 500 can be positioned as follows: Figure 3 and Figure 5 As shown, the heating structure 500 is located on the side of the input electrode 313 away from the active layer 320. Furthermore, the heating structure 500 can also be arranged in the same layer as the control electrode 312, the input electrode 313, and other structures. This embodiment of the invention does not impose specific limitations on this. Figure 3 and Figure 5 This is just one example.

[0045] Overall, the heating structure 500 can be configured in various ways, allowing for adjustments to its position to ensure optimal heating of the display panel 10. It should also be noted that, according to... Figure 3 and Figure 5 As shown in the figure, the first electrode 810 is located on the side of the second electrode 820 closer to the substrate 200, that is, the pixel electrode is located on the side of the common electrode closer to the substrate. The setting position of the first electrode 810 and the second electrode 820 is flexible and can be adjusted adaptively according to the actual process requirements.

[0046] In summary, in the display panel provided by the embodiments of the present invention, a portion of the heating structure is disposed adjacent to the active layer along the thickness direction of the display panel. That is, the heating structure can provide heat to the pixel circuit, improve the heating effect of the heating structure on the pixel circuit, ensure the heating effect of the display panel, and thus ensure the display effect of the display panel.

[0047] Figure 6 yes Figure 2 An enlarged schematic diagram of region D1 in the middle, for reference. Figure 2 , Figure 3 and Figure 6 The heating structure 500 includes a first heating trace 510, which includes a first heating trace portion 510A, a second heating trace portion 510B, and a third heating trace portion 510C. The first heating trace portion 510A is electrically connected to the first end of the second heating trace portion 510B, and the second end of the second heating trace portion 510B is electrically connected to the third heating trace portion 510C. The first heating trace portion 510A and the third heating trace portion 510C are located on both sides of the active layer 320. Along the thickness direction of the display panel 10, the second heating trace portion 510B overlaps with the active layer 320.

[0048] Specifically, heating trace 500 includes the first heating trace 510, see reference. Figure 6 The first heating trace 510 includes a first heating trace portion 510A, a second heating trace portion 510B, and a third heating trace portion 510C, which are adjacent to and intersect each other. Specifically, both ends of the second heating trace portion 510B are electrically connected to the first heating trace portion 510A and the third heating trace portion 510C, respectively, meaning the second heating trace portion 510B is located between the first heating trace portion 510A and the third heating trace portion 510C.

[0049] Furthermore, along the thickness direction of the display panel 10, the first heating trace 510A and the third heating trace 510C are located on both sides of the active layer 320, meaning that the heating trace 500 is adjacent to the active layer 320, and can heat the pixel circuit 300 through heat radiation transfer. Furthermore, along the thickness direction of the display panel 10, the second heating trace 510B overlaps with the active layer 320, meaning that the second heating trace 510B can transfer heat to the pixel circuit 300 more efficiently. In other words, by adjusting the positions of different portions of the first heating trace 510, the heating structure 500 can be flexibly configured, further ensuring the heating effect of the heating structure 500 on the pixel circuit 300, and ensuring that the display panel 10 maintains normal display operation even in cold or other special environments.

[0050] Figure 7 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 8 yes Figure 7 An enlarged schematic diagram of region D2 in the middle. Figure 9 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 10 yes Figure 9 An enlarged schematic diagram of region D3 in the middle, for reference. Figure 2 , Figures 6 to 10 The display panel 10 also includes a scan line 420 located in the display area 100, the scan line 420 being electrically connected to the pixel circuit 300, and the scan line 400 extending along a first direction X; the second heating trace portion 510B includes a portion extending along the first direction X, and / or a portion extending along the second direction Y; wherein the second direction Y is perpendicular to the first direction X and parallel to the plane where the substrate 200 is located.

[0051] Specifically, the display panel 10 includes a scan line 420 and a data line 410. The scan line 420 extends along a first direction X, and the data line 410 extends along a second direction Y. The first direction X and the second direction Y are perpendicular and parallel to the plane of the substrate 200. Both the scan line 420 and the data line 410 are electrically connected to the pixel circuit 300. Specifically, the scan line 420 is electrically connected to the control electrode 312 in the pixel circuit 300, and the data line 410 is electrically connected to the input electrode 312 in the pixel circuit 300.

[0052] Furthermore, the arrangement of the second heating trace 510B in the first heating trace 510 can be varied, as shown in the reference. Figure 2 and Figure 6 The second heating trace 510B extends along the first direction X, that is, in the same direction as the extension of the scan line 420, as shown in the reference. Figure 7 and Figure 8 The second heating trace 510B extends along the second direction Y, that is, in the same direction as the data line 410. (Refer to...) Figure 9 and Figure 10 The second heating trace 510B includes a portion extending along the first direction X and a portion extending along the second direction Y, similar to an "L" shape arrangement. The above description specifically demonstrates the flexibility of the first heating trace 510 arrangement, that is, the flexibility of the heating structure 500, which can be adaptively adjusted according to the actual situation of the display panel 10.

[0053] Figure 11 yes Figure 4 An enlarged schematic diagram of region D4 in the middle, for reference. Figure 4 , Figure 5 and Figure 11 The heating structure 500 includes a first heating trace 510, which includes a first heating trace portion 510A, a second heating trace portion 510B, and a third heating trace portion 510C. The first heating trace portion 510A is electrically connected to the first end of the second heating trace portion 510B, and the second end of the second heating trace portion 510B is electrically connected to the third heating trace portion 510C. The first heating trace portion 510A and the third heating trace portion 510C are located on both sides of the active layer. Along the thickness direction of the display panel 10, the second heating trace portion 510B is arranged around the active layer 320 and does not overlap with the active layer 320.

[0054] Specifically, heating trace 500 includes the first heating trace 510, see reference. Figure 11The first heating trace 510 includes a first heating trace portion 510A, a second heating trace portion 510B, and a third heating trace portion 510C, which are adjacent to and intersect each other. Specifically, both ends of the second heating trace portion 510B are electrically connected to the first heating trace portion 510A and the third heating trace portion 510C, respectively, meaning the second heating trace portion 510B is located between the first heating trace portion 510A and the third heating trace portion 510C.

[0055] Furthermore, along the thickness direction of the display panel 10, the first heating trace 510A and the third heating trace 510C are located on both sides of the active layer 320, which means that the heating trace 500 is arranged adjacent to the active layer 320, and the pixel circuit 300 can be heated by the radiation transfer of heat.

[0056] Furthermore, along the thickness direction of the display panel 10, the second heating trace 510B is disposed around the active layer 320, meaning that the second heating trace 510B surrounds the active layer 320 and does not overlap with the active layer 320 along the thickness direction. This arrangement ensures that the second heating trace 510B can more efficiently transfer heat to the pixel circuit 300, while also preventing the metal second heating trace 510B from generating parasitic capacitance with the active layer 320. This avoids the device characteristics of the shadow line transistor 310 when the capacitance is large, thus ensuring the operational stability of the display panel 10. In other words, while more effectively ensuring the heating effect of the heating structure 500 on the pixel circuit 300, the operational stability of the display panel 10 can also be maintained.

[0057] Figure 12 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 13 yes Figure 12 An enlarged schematic diagram of region D5 in the middle. Figure 14 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 15 yes Figure 14 An enlarged schematic diagram of region D6 in the middle, for reference. Figure 4 , Figures 11 to 15 The second heating trace 510B includes a first sub-trace 510B1 and a second sub-trace 510B2; the first sub-trace 510B1 and the second sub-trace 510B2 are arranged opposite to each other around the active layer 320; the resistance of the first sub-trace 510B1 is R1 and the resistance of the second sub-trace 510B2 is R2; wherein, |R1-R2| / [R1+R2) / 2]≤50%.

[0058] Specifically, the second heating wiring section 510B includes a first sub-wiring 510B1 and a second sub-wiring 510B2, as shown in the reference. Figure 11, Figure 13 and Figure 15 The first sub-trace 510B1 and the second sub-trace 510B2 are two semi-circular heating traces surrounding the active layer 320. The first heating trace 510, composed of the first sub-trace 510B1 and the second sub-trace 510B2, can completely surround the active layer 320, ensuring the heating effect of the heating structure 500 on the pixel circuit 300. Furthermore, the first sub-trace 510B1 and the second sub-trace 510B2 are along the thickness direction of the display panel 10 and do not overlap with the active layer 320. This ensures the heating effect while avoiding capacitance between the heating structure 500 and the active layer 320, thus ensuring the operational stability of the transistor 310 in the pixel circuit 300 and consequently guaranteeing the display effect of the display panel 10.

[0059] Furthermore, the resistance of the first sub-trace 510B1 is R1, and the resistance of the second sub-trace 510B2 is R2. The resistances of the two sub-traces satisfy |R1-R2| / [R1+R2) / 2]≤50%, that is, the resistances of the first sub-trace 510B1 (R1) and the second sub-trace 510B2 (R2) are the same or similar. This means that the heat generated by the first heating traces 510 on both sides of the active layer 320 is similar or the same, ensuring uniform heating of the pixel circuit 300 and ensuring the overall heating effect and operational stability of the display panel 10.

[0060] Continue to refer to 14 and Figure 15 The length of the first sub-trace 510B1 is greater than the length of the second sub-trace 510B2; the line width of the first sub-trace 510B1 is greater than the line width of the second sub-trace 510B2; and / or the sheet resistance of the first sub-trace 510B1 is less than the sheet resistance of the second sub-trace 510B2.

[0061] Furthermore, based on the placement positions of the first heating trace 510A and the third heating trace 510C, there may be cases where the lengths of the first sub-trace 510B1 and the second trace 510B2 are different. For example, refer to... Figure 14 and Figure 15 In the configuration shown in the figure, the length of the first sub-trace 510B1 is greater than the length of the second sub-trace 510B2. The resistance of a trace has a certain quantitative relationship with its length. To ensure that the heat generated by the first sub-trace 510B1 and the second sub-trace 510B2 remains the same or similar even when their lengths are different, other conditions of the first sub-trace 510B1 and / or the second sub-trace 510B2 can be adjusted to ensure the heating uniformity of the pixel circuit 300 by the heating structure 500.

[0062] For example, the linewidth of the first sub-trace 510B1 is greater than the linewidth of the second sub-trace 510B2, and / or the sheet resistance of the first sub-trace 510B1 is less than the sheet resistance of the second sub-trace 510B2. That is, by adjusting the linewidth and sheet resistance, it can be ensured that the heat generated by the first sub-trace 510B1 and the second sub-trace 510B2 as a whole is similar or the same.

[0063] Continue to refer to Figure 4 , Figures 11 to 13 The display panel 10 also includes a scan line 420 located in the display area 100. The scan line 420 is electrically connected to the pixel circuit 300 and extends along a first direction X. The first sub-line 510B1 and the second sub-line 510B2 are arranged along the first direction X, or the first sub-line 510B1 and the second sub-line 510B2 are arranged along a second direction Y. The second direction Y is perpendicular to the first direction X and parallel to the plane where the substrate 200 is located.

[0064] Specifically, the second heating trace 510B includes a first sub-trace 510B1 and a second sub-trace 510B2. Along the thickness direction of the display panel 10, while ensuring that the first sub-trace 510B1 and the second sub-trace 510B2 are arranged around the active layer 320, the arrangement of the first sub-trace 510B1 and the second sub-trace 510B2 is flexible. Specifically, refer to... Figure 4 and Figure 11 As shown, the first sub-trace 510B1 and the second sub-trace 510B2 are arranged along the first direction X, that is, along the extension direction of the scan line 420. (Refer to...) Figure 12 and Figure 13 As shown, the first sub-trace 510B1 and the second sub-trace 510B2 are arranged along the second direction Y, that is, along the extension direction of the data line 410, demonstrating the flexibility of the specific wiring arrangement of the second heating trace section 510B. In general, while ensuring the heating effect of the heating structure 500 on the pixel circuit 300, the wiring arrangement can be adaptively adjusted. For example, by adjusting the wiring, a compact wiring can be ensured, providing more space for the display panel 10.

[0065] Figure 16 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 17 yes Figure 16 An enlarged schematic diagram of region D7 in the middle. Figure 18 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 19 yes Figure 18 An enlarged schematic diagram of region D8 in the middle, for reference. Figures 16 to 19The display panel 10 also includes a scan line 420 located in the display area 100. The scan line 420 is electrically connected to the pixel circuit 300 and extends along the first direction X. The first heating trace portion 510A and the third heating trace portion 510C are arranged along the first direction X. At least a portion of the first heating trace portion 510A and / or at least a portion of the third heating trace portion 510C do not overlap with the scan line 420.

[0066] For details, please refer to Figures 16 to 19 In the first heating trace 510, the first heating trace portion 510A and the third heating trace portion 510C are arranged along the first direction X. In other words, the first heating trace portion 510A and the third heating trace portion 510C are located on both sides of the second heating trace portion 510B along the first direction X.

[0067] Furthermore, with the aforementioned positions of the first heating trace 510A and the third heating trace 510C, it can be ensured that a portion of the first heating trace 510A and / or at least a portion of the third heating trace 510C do not overlap with the scan line 420. This avoids excessive overlap between the first heating trace 510 and the scan line 420, effectively reducing the capacitance generated between the heating structure 500 and the scan line 420, thereby preventing the capacitance from affecting the characteristics of the transistor 310 and further ensuring the operational stability of the display panel 10.

[0068] In other words, although the first heating trace 510A and the third heating trace 510C are arranged along the first direction X, their extension directions may not be the first direction X. That is, the first heating trace 510A and the third heating trace 510C must have a non-overlapping position with the scan line 420. Or, although the first heating trace 510A and the third heating trace 510C are arranged along the first direction X, the heating structure 500 and the scan line 420 do not completely overlap in the thickness direction of the display panel 10. Based on the above situations, the capacitance generated between the heating structure 500 and the scan line 420 can be reduced.

[0069] Figure 20 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 21 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention, for reference. Figure 20 and Figure 21 The heating structure 500 also includes a second heating trace 520; the sub-pixel 400 also includes a pixel opening 400A; along the thickness direction of the display panel 10, the second heating trace 520 and the pixel opening 400A overlap.

[0070] refer to Figure 1 , Figure 20 and Figure 21As shown, the display panel 10 includes multiple sub-pixels 400, and the display function of the display panel 10 is realized by controlling the sub-pixels 400. Specifically, each sub-pixel 400 includes a pixel opening 400A, which is a light-transmitting area, and a wiring area 400B, which is a wiring area, surrounding the pixel opening 400A. The pixel opening 400A enables the display panel 10 to emit light, and the wiring area 400B sets various wirings to ensure the display panel 10 emits light.

[0071] Furthermore, the heating structure 500 includes a first heating trace 510, which is mainly used to provide heat to the pixel circuit 300. The heat from the first heating trace 510 can also be transferred to the pixel opening 400A through thermal radiation. To ensure the overall heating effect of the display panel 10, the heating structure 500 also includes a second heating trace 520, which overlaps with the pixel opening 400A. That is, the second heating trace 520 can directly heat the area of ​​the pixel opening 400A, further ensuring the overall heating effect of the display panel 10.

[0072] Continue to refer to Figure 20 and Figure 21 The display panel 10 also includes a scan line 420 located in the display area 100, the scan line 420 being electrically connected to the pixel circuit 300, and the scan line 420 extending along a first direction X; the second heating trace 520 includes at least a first portion 521 and a second portion 522 that are in contact with each other; the extension direction of the first portion 521 intersects the extension direction of the second portion 522; the extension directions of the first portion 521 and / or the second portion 522 have an angle α with the first direction.

[0073] Specifically, the second heating trace 520 includes at least a first portion 521 and a second portion 522, meaning the second heating trace 520 may also include more portions. This embodiment of the invention does not limit the specific number of portions. For example, Figure 20 and Figure 21 The diagram shows the first part 521, the second part 522 and the third part 523, with the positions of the first part 521 and the second part 522 being described in detail.

[0074] Specifically, the extension direction of the first section 521 intersects the extension direction of the second section 522, meaning that the sections in the second heating trace 520 can be divided according to their different extension directions. Further, refer to... Figure 20 and Figure 21As shown, the extension direction of the first portion 521 forms an angle α with the first direction X. Depending on different circumstances, the second portion 521 may form an angle with the first direction X, or other portions may form an angle with the first direction X, or multiple portions may form angles with the first direction X. This embodiment of the invention does not impose specific limitations. By setting the second heating trace 520 into multiple portions, the wiring area of ​​the second heating trace 520 within the pixel opening 400A can be increased, thereby ensuring the heating effect on the pixel opening 400A.

[0075] Continue to refer to Figure 20 and Figure 21 The first heating line 510 is electrically connected to the second heating line 520.

[0076] For details, please refer to Figure 20 and Figure 21 The first heating trace 510 and the second heating trace 520 are electrically connected, meaning the heating structure 500 is an integral structure, and the first heating trace 510 and the second heating structure 520 form a single heating system, differing only in their locations. Based on this, with a single heating system, heating of the pixel circuit 300 and the pixel aperture 400A can be ensured simultaneously. This reduces the wiring space required for the heating traces while maintaining heating effectiveness, thus reducing the manufacturing cost of the display panel 10.

[0077] Continue to refer to Figure 20 and Figure 21 The heat generated by the first heating trace 510 is Q1, and the heat generated by the second heating trace 520 is Q2, where Q2 > Q1.

[0078] Specifically, based on the placement of the first heating trace 510 and the second heating trace 520, the first heating trace 510 is mainly used to provide heat to the pixel circuit 300, and the second heating trace 520 is mainly used to provide heat to the pixel opening 400A. In reality, the pixel circuit 300's heat requirement is less than that of the pixel opening 400A, and providing too much heat to the pixel circuit 300 would affect its operational stability. Therefore, by making more precise adjustments to the heating structure 500, the heat generated by the first heating trace 510 can be ensured to be less than that generated by the second heating trace 520. This means that while ensuring the overall heating effect of all areas of the display panel 10, further adaptive adjustments can be made based on the heating needs of different areas, better guaranteeing the overall heating effect of the display panel 10.

[0079] Continue to refer to Figure 20 and Figure 21The line width of the first heating trace 510 is greater than the line width of the second heating trace 520, and / or the sheet resistance of the first heating trace 510 is less than the sheet resistance of the second heating trace 520.

[0080] Furthermore, since the heating areas of the first heating trace 510 and the second heating trace 520 are different, there are requirements for the heat generated by the first heating trace 510 and the second heating trace 520 to be different. Specifically, the line width of the first heating trace 510 is greater than the line width of the second heating trace 520, meaning that under constant voltage input, the heat generated by the first heating trace 510 will be less than the heat generated by the second heating trace 520. Alternatively, the sheet resistance of the first heating trace 510 is less than the sheet resistance of the second heating trace 520, meaning that under constant voltage input, the heat generated by the first heating trace 510 will also be less than the heat generated by the second heating trace 520. Furthermore, the line width and sheet resistance can be adjusted simultaneously, meaning that the line width of the first heating trace 510 is greater than the line width of the second heating trace 520, and simultaneously, the sheet resistance of the first heating trace 510 is less than the sheet resistance of the second heating trace 520. This allows for adaptive adjustments based on the heating requirements of different areas, better ensuring the overall heating effect of the display panel 10.

[0081] Figure 22 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention. Figure 23 This is a schematic diagram of another sub-pixel structure provided in an embodiment of the present invention, for reference. Figure 22 and Figure 23 The first heating line 510 and the second heating line 520 are insulated.

[0082] For details, please refer to Figure 22 and Figure 23 The first heating trace 510 and the second heating trace 520 are electrically insulated from each other, meaning the heating structure 500 is a separate structure. Specifically, the first heating trace 510 and the second heating structure 520 are two separate heating systems. The heating signals input to the first heating structure 510 and the second heating structure 520 can be different and do not interfere with each other. Based on this, with two heating systems, the pixel circuit 300 and the pixel aperture 400A can be heated according to their own needs, achieving fine-tuning of the heating effect and thus ensuring the overall display effect of the display panel 10.

[0083] Continue to refer to Figure 22 and Figure 23 The heat generated by the first heating trace 510 is Q1, and the heat generated by the second heating trace 520 is Q2, where Q2 > Q1.

[0084] Similarly, based on the placement of the first heating trace 510 and the second heating trace 520, the first heating trace 510 is mainly used to provide heat to the pixel circuit 300, and the second heating trace 520 is mainly used to provide heat to the pixel opening 400A. In reality, the pixel circuit 300's heat requirement is less than that of the pixel opening 400A, and providing too much heat to the pixel circuit 300 would affect its operational stability. Therefore, by making more precise adjustments to the heating structure 500, the heat generated by the first heating trace 510 can be ensured to be less than that generated by the second heating trace 520. This means that while ensuring the overall heating effect of all areas of the display panel 10, further adaptive adjustments can be made based on the heating needs of different areas, better guaranteeing the overall heating effect of the display panel 10.

[0085] Continue to refer to Figure 22 and Figure 23 The voltage difference between the two ends of the first heating trace 510 is U1, and the voltage difference between the two ends of the second heating trace 520 is U2, where U2 > U1.

[0086] Specifically, different heating signals can be input to the first heating trace 510 and the second heating trace 520, and the greater the voltage difference between the inputs, the greater the heat generated by the heating trace. That is, when the heat required by the pixel circuit 300 is less than the heat required by the pixel aperture 400A, the voltage difference across the first heating trace 510 can be made smaller than the voltage difference across the second heating trace 520, allowing for fine-tuning based on the heating requirements of different areas, thus better ensuring the overall heating effect of the display panel 10.

[0087] Continue to refer to Figure 22 and Figure 23 The line width of the first heating trace 510 is greater than the line width of the second heating trace 520, and / or the sheet resistance of the first heating trace 510 is less than the sheet resistance of the second heating trace 520.

[0088] Similarly, since the heating areas of the first heating trace 510 and the second heating trace 520 are different, there are requirements for the heat generated by the first heating trace 510 and the second heating trace 520 to be different. Specifically, if the line width of the first heating trace 510 is greater than the line width of the second heating trace 520, the heat generated by the first heating trace 510 will be less than the heat generated by the second heating trace 520. Alternatively, if the sheet resistance of the first heating trace 510 is less than the sheet resistance of the second heating trace 520, the heat generated by the first heating trace 510 will also be less than the heat generated by the second heating trace 520. Furthermore, the line width and sheet resistance can be adjusted simultaneously, i.e., the line width of the first heating trace 510 is greater than the line width of the second heating trace 520, and at the same time, the sheet resistance of the first heating trace 510 is less than the sheet resistance of the second heating trace 520. This allows for fine-tuning based on the heating requirements of different areas, better ensuring the overall heating effect of the display panel 10.

[0089] Continue to refer to Figure 22 and Figure 23 The heating time of the first heating trace 510 is T1, and the heating time of the second heating trace 520 is T2, where T2 > T1.

[0090] Specifically, the first heating trace 510 and the second heating trace 520 can be input with different heating signals, and the longer the input heating signal duration, the greater the heat generated by the heating trace. That is, when the heat required by the pixel circuit 300 is less than the heat required by the pixel aperture 400A, the heating time of the first heating trace 510 can be less than the heating time of the second heating trace 520, allowing for fine-tuning based on the heating requirements of different areas, thus better ensuring the overall heating effect of the display panel 10.

[0091] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 24 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 24 As shown, the display device 1 includes the display panel 10 described in any of the above embodiments. Therefore, the display device 1 provided in this embodiment of the invention possesses the corresponding beneficial effects described in the above embodiments, which will not be repeated here. For example, the display device 1 can be an electronic device such as a mobile phone, computer, smart wearable device (e.g., smartwatch), and in-vehicle display device, and this embodiment of the invention does not limit it.

[0092] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, Including the display area: The display panel also includes: Substrate; Multiple sub-pixels are located in the display area, each sub-pixel including a pixel circuit; the pixel circuit includes a transistor, and the transistor includes an active layer; A heating structure is located in the display area and on one side of the substrate. Along the thickness direction of the display panel, part of the heating structure is disposed adjacent to the active layer. The heating structure includes a first heating trace, which includes a first heating trace portion, a second heating trace portion, and a third heating trace portion; the first heating trace portion is electrically connected to a first end of the second heating trace portion, and the second end of the second heating trace portion is electrically connected to the third heating trace portion. The first heating trace and the third heating trace are located on both sides of the active layer; Along the thickness direction of the display panel, the second heating trace overlaps with the active layer; or, along the thickness direction of the display panel, the second heating trace surrounds the active layer and does not overlap with the active layer. The heating structure also includes a second heating line; The sub-pixel also includes a pixel opening; Along the thickness direction of the display panel, the second heating trace overlaps with the pixel opening; The first heating trace is electrically connected to the second heating trace, or the first heating trace and the second heating trace are insulated from each other; The heat generated by the first heating trace is Q1, and the heat generated by the second heating trace is Q2, wherein Q2 > Q1.

2. The display panel according to claim 1, characterized in that, When the second heating trace overlaps with the active layer along the thickness direction of the display panel, the display panel further includes a scan line located in the display area, the scan line is electrically connected to the pixel circuit, and the scan line extends along the first direction; The second heating wiring portion includes a portion extending along the first direction and / or a portion extending along the second direction; The second direction is perpendicular to the first direction and parallel to the plane containing the substrate.

3. The display panel according to claim 1, characterized in that, When the second heating trace is disposed around the active layer and does not overlap with the active layer along the thickness direction of the display panel, the second heating trace includes a first sub-trace and a second sub-trace. The first sub-trace and the second sub-trace are arranged relative to each other around the active layer; The resistance of the first sub-trace is R1, and the resistance of the second sub-trace is R2; wherein, |R1-R2| / [R1+R2) / 2]≤50%.

4. The display panel according to claim 3, characterized in that, The length of the first sub-trace is greater than the length of the second sub-trace; The linewidth of the first sub-trace is greater than the linewidth of the second sub-trace, and / or the sheet resistance of the first sub-trace is less than the sheet resistance of the second sub-trace.

5. The display panel according to claim 3, characterized in that, The display panel further includes scan lines located in the display area, the scan lines being electrically connected to the pixel circuit, and the scan lines extending along a first direction; The first sub-trace and the second sub-trace are arranged along the first direction, or the first sub-trace and the second sub-trace are arranged along the second direction; The second direction is perpendicular to the first direction and parallel to the plane containing the substrate.

6. The display panel according to claim 1, characterized in that, The display panel further includes scan lines located in the display area, the scan lines being electrically connected to the pixel circuit, and the scan lines extending along a first direction; The first heating trace and the third heating trace are arranged along the first direction; At least a portion of the first heating trace and / or at least a portion of the third heating trace do not overlap with the scan line.

7. The display panel according to claim 1, characterized in that, The display panel further includes scan lines located in the display area, the scan lines being electrically connected to the pixel circuit, and the scan lines extending along a first direction; The second heating trace includes at least a first portion and a second portion that are in contact with each other; the extension direction of the first portion intersects the extension direction of the second portion; the extension direction of the first portion and / or the second portion forms an angle with the first direction.

8. The display panel according to claim 1, characterized in that, The linewidth of the first heating trace is greater than the linewidth of the second heating trace, and / or the sheet resistance of the first heating trace is less than the sheet resistance of the second heating trace.

9. The display panel according to claim 1, characterized in that, When the first heating trace and the second heating trace are insulated, the voltage difference between the two ends of the first heating trace is U1, and the voltage difference between the two ends of the second heating trace is U2, wherein U2 > U1.

10. The display panel according to claim 1, characterized in that, When the first heating trace and the second heating trace are insulated, the heating time of the first heating trace is T1, and the heating time of the second heating trace is T2, wherein T2 > T1.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1-10.

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