Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a display substrate and a touch layer which are arranged in a stacked mode. The display substrate comprises a plurality of functional conductive layers, and the touch layer comprises a touch conductive layer. The thermoelectric conversion element includes a first conductive connection portion, a second conductive connection portion, a first thermoelectric element, and a second thermoelectric element. The first thermoelectric element and the second thermoelectric element are arranged between the first conductive connection part and the second conductive connection part and are arranged at intervals. The temperature dependencies of the first thermoelectric element and the second thermoelectric element are different. At least one of the multiple functional conductive layers is multiplexed as a first conductive connecting part, the touch conductive layer is multiplexed as a second conductive connecting part, and the first thermoelectric element and the second thermoelectric element are electrically connected through the first conductive connecting part and the second conductive connecting part to form a thermoelectric conversion loop. The cruising ability of the display panel can be effectively improved.

Description

Technical Field

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

[0002] With the rapid development of science and technology, the popularity of electronic devices has gradually increased, and the frequency of use in daily life has become higher and higher, which has put forward greater demands on the battery life of electronic devices.

[0003] Therefore, there is an urgent need for a display device to solve the technical problem of poor battery life of display devices in the prior art. Summary of the invention

[0004] The display panel and display device provided by the embodiments of the present application can effectively improve the battery life of the display panel.

[0005] In the first aspect, according to an embodiment of the present application, a display panel is proposed, and the display panel includes a display substrate and a touch layer that are stacked. The display substrate includes a plurality of functional conductive layers, and the touch layer includes a touch conductive layer. The thermoelectric conversion component includes a first conductive connection portion, a second conductive connection portion, a first thermoelectric element, and a second thermoelectric element. The first thermoelectric element and the second thermoelectric element are arranged between the first conductive connection portion and the second conductive connection portion and are spaced apart from each other. The temperature dependence of the first thermoelectric element and the second thermoelectric element is different. At least one of the plurality of functional conductive layers is reused as the first conductive connection portion, the touch conductive layer is reused as the second conductive connection portion, and the first thermoelectric element and the second thermoelectric element are electrically connected through the first conductive connection portion and the second conductive connection portion to form a thermoelectric conversion circuit.

[0006] In a second aspect, an embodiment of the present application further provides a display device, comprising the display panel as described above.

[0007] According to the display panel and display device provided by the present application, a thermoelectric conversion circuit is added in the display panel, and the thermoelectric conversion circuit can convert the excess heat energy generated in the display panel into electrical energy for use by the display panel. In addition, the thermoelectric conversion component includes a first conductive connection portion, a second conductive connection portion, a first thermoelectric element, and a second thermoelectric element. The thermoelectric conversion circuit can convert the excess heat energy generated in the display panel into electrical energy for use by the display panel, which can not only help the display panel to dissipate heat, but also improve the battery life of the display panel, thereby solving the technical problem of poor battery life of the display panel in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0009] Figure 1A schematic cross-sectional structure diagram of a display panel provided in some embodiments of the present application;

[0010] Figure 2 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0011] Figure 3 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0012] Figure 4 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0013] Figure 5 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0014] Figure 6 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0015] Figure 7 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0016] Figure 8 A schematic top view of a first thermoelectric element, a second thermoelectric element, and a pixel opening in a display panel provided in some embodiments of the present application;

[0017] Fig. 9 A schematic top view of a first thermoelectric element, a second thermoelectric element, and a pixel opening in another display panel provided in some embodiments of the present application;

[0018] Fig.10 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0019] Fig.11 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0020] Fig.12 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0021] Fig.13 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0022] Fig.14 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application;

[0023] Fig.15 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0024] Marking Description:

[0025] AA, display area; NA, non-display area;

[0026] 10. Display substrate; 11. Array substrate; 111. Substrate; 112. Driving circuit layer; 12. Display function layer; 121. First electrode layer; 121a. First electrode; 122. Second electrode layer; 122a. Second electrode; 123. Display layer; 123a. Display unit; 124. Pixel definition layer; 124a. Pixel defining portion; 124b. Pixel opening; 13. Encapsulation layer; 131. First encapsulation layer; 132. Second encapsulation layer; 133. Third encapsulation layer; 14. First conductive layer;

[0027] 20. Touch layer; 21. Touch electrode; 211. Touch function electrode; 212. Jumper electrode; 22. Touch wiring;

[0028] 30. Thermoelectric conversion element; 31. First conductive connection portion; 311. First end portion; 312. Second end portion; 32. Second conductive connection portion; 321. Third end portion; 322. Fourth end portion; 33. First thermoelectric element; 331. First hot end portion; 332. First cold end portion; 34. Second thermoelectric element; 341. Second hot end portion; 342. Second cold end portion; 40. Reflection layer;

[0029] L, touch conductive layer; L1, first touch conductive layer; L2, second touch conductive layer; C, thermoelectric conversion circuit; X, first direction; Z, thickness direction.

[0030] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0031] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0033] The display device in this application can be applied to electronic devices such as mobile phones, PADs, and computers. At present, in order to improve the battery life of the display device, fast charging technology has been popularized, but due to the limitations of battery capacity and display device power consumption, fast charging technology cannot significantly improve the battery life of the display device, and multiple charges are still required to meet the use needs. In addition, the prior art also uses integrated thin-film solar cells to generate electricity using light energy for use in display devices. However, since solar cells need to be used in an outdoor environment on a sunny day to achieve the maximum power generation effect, in an environment with low brightness, it will greatly affect the photoelectric conversion efficiency of the solar cell. Therefore, the use scenarios of solar cells are often limited.

[0034] In order to solve the above problems, in a first aspect, an embodiment of the present application provides a display panel.

[0035] Figure 1 A schematic diagram of the cross-sectional structure of a display panel provided in some embodiments of the present application. Figure 2 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application. Figure 3 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application. Figure 4 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0036] like Figures 1 to 4As shown, an embodiment of the present application provides a display panel, which includes a display substrate 10 and a touch layer 20 that are stacked. The display substrate 10 includes multiple functional conductive layers, and the touch layer 20 includes a touch conductive layer L. The thermoelectric conversion member 30 includes a first conductive connection portion 31, a second conductive connection portion 32, a first thermoelectric element 33, and a second thermoelectric element 34. The first thermoelectric element 33 and the second thermoelectric element 34 are arranged between the first conductive connection portion 31 and the second conductive connection portion 32 and are spaced apart from each other. The temperature dependence of the first thermoelectric element 33 and the second thermoelectric element 34 is different. At least one of the multiple functional conductive layers is reused as the first conductive connection portion 31, the touch conductive layer L is reused as the second conductive connection portion 32, and the first thermoelectric element 33 and the second thermoelectric element 34 are electrically connected through the first conductive connection portion 31 and the second conductive connection portion 32 to form a thermoelectric conversion circuit C.

[0037] In the embodiment of the present application, the display panel can be, for example, a liquid crystal display panel (Liquid Crystal Display, LCD), an organic light emitting diode (Organic Light Emitting Diode, OLED) display panel, a quantum dot light emitting diode (Quantum-dot Light Emitting Diode, QLED) display panel, or a micro light emitting diode (Micro Light Emitting Diode, Micro LED) display panel, and is not limited here.

[0038] As an example, when the display panel is an LCD display panel, the display panel includes a driving circuit layer 112, a liquid crystal layer and a touch layer 20, and the multi-layer functional conductive layer includes the driving circuit layer 112. When the display panel is an OLED display panel, the display panel includes a driving circuit layer 112, a display function layer 12, an encapsulation layer 13 and a touch layer 20.

[0039] Optionally, the display panel may include a display area AA and a non-display area NA.

[0040] As an example, when the display panel is an LCD display panel, the first thermoelectric element 33 and the second thermoelectric element 34 are arranged in the non-display area NA to reduce the possibility of interference between the first thermoelectric element 33 and the second thermoelectric element 34 and the liquid crystal layer, and the second conductive connection portion 32 can be arranged in the non-display area NA to reduce the interference of the second conductive connection portion 32 on the display area AA. Of course, a part of the second conductive connection portion 32 can also be arranged in the display area AA to conduct the heat in the display area AA to the non-display area NA. Optionally, the LCD display panel can also include a backlight module, and the first conductive connection portion 31 can also be connected to the light source in the backlight module so that the heat emitted by the light source is conducted to the first thermoelectric element 33 and the second thermoelectric element 34 through the first conductive connection portion 31.

[0041] As an example, when the display panel is an OLED display panel, the first thermoelectric element 33 and the second thermoelectric element 34 can be both arranged in the non-display area NA, or only the first thermoelectric element 33 can be arranged in the non-display area NA, and the second thermoelectric element 34 can be arranged in the display area AA, or only the second thermoelectric element 34 can be arranged in the non-display area NA, and the first thermoelectric element 33 can be arranged in the display area AA, or the first thermoelectric element 33 and the second thermoelectric element 34 can be arranged in the display area AA. Similarly, the first conductive connection part 31 and the second conductive connection part 32 can both be at least partially arranged in the non-display area NA, or only at least a portion of the first conductive connection part 31 can be arranged in the non-display area NA, and at least a portion of the second conductive connection part 32 can be arranged in the display area AA, or only at least a portion of the second conductive connection part 32 can be arranged in the non-display area NA, and at least a portion of the first conductive connection part 31 can be arranged in the display area AA, or both the first conductive connection part 31 and the second conductive connection part 32 can be at least partially arranged in the display area AA. The following only takes the display panel as an OLED display panel as an example for discussion.

[0042] Optionally, the multi-layer functional conductive layer may include a driving circuit layer 112 , an anode layer, a cathode layer, a shielding layer and other functional film layers.

[0043] Optionally, the touch layer 20 includes touch electrodes 21 and touch traces 22 . Optionally, the number of the touch conductive layer L may be one or more layers.

[0044] As an example, when the touch conductive layer L is a single layer, the touch electrodes 21 , the touch traces 22 and the second conductive connection portions 32 are all located in the touch conductive layer L.

[0045] As an example, when the touch conductive layer L is multi-layer, the touch electrode 21, the touch wiring 22 and the second conductive connection part 32 are all located in different touch conductive layers L; the touch wiring 22 and the second conductive connection part 32 can also be located in the same touch conductive layer L, and the touch electrode 21 and the touch wiring 22 are located in different touch conductive layers L; the touch electrode 21 and the second conductive connection part 32 can also be located in the same touch conductive layer L, and the touch electrode 21 and the touch wiring 22 are located in different touch conductive layers L.

[0046] In some embodiments, the number of thermoelectric conversion circuits C is multiple, and each thermoelectric conversion circuit C includes a first conductive connection portion 31, a second conductive connection portion 32, a first thermoelectric element 33, and a second thermoelectric element 34. Of course, the embodiment of the present application does not impose any special restrictions on the number of each component in each thermoelectric conversion circuit C. For example, in each thermoelectric conversion circuit C, the number of first conductive connection portions 31 can also include multiple. In each thermoelectric conversion circuit C, the number of second conductive connection portions 32 can also include multiple. In each thermoelectric conversion circuit C, the number of first thermoelectric elements 33 can also include multiple. In each thermoelectric conversion circuit C, the number of second thermoelectric elements 34 can also include multiple.

[0047] Optionally, the projection of the first conductive part along the thickness direction Z of the display panel at least partially overlaps with the projection of the second conductive part along the thickness direction Z. Exemplarily, the projection of the first conductive connection part 31 along the thickness direction Z overlaps with the projection of the second conductive connection part 32 along the thickness direction Z; or, the projection of the first conductive connection part 31 along the thickness direction Z is located within the projection of the second conductive connection part 32 along the thickness direction Z; or, the projection of the second conductive connection part 32 along the thickness direction Z is located within the projection of the first conductive connection part 31 along the thickness direction Z; or, a portion of the projection of the first conductive connection part 31 along the thickness direction Z overlaps with a portion of the projection of the second conductive connection part 32 along the thickness direction Z.

[0048] Optionally, the projection of the first conductive part along the thickness direction Z of the display panel at least partially overlaps with the projection of the first thermoelectric element 33 along the thickness direction Z. Exemplarily, the projection of the first thermoelectric element 33 along the thickness direction Z is located within the projection of the first conductive connecting part 31 along the thickness direction Z; or, a portion of the projection of the first thermoelectric element 33 along the thickness direction Z overlaps with a portion of the projection of the first conductive connecting part 31 along the thickness direction Z.

[0049] Optionally, the projection of the first conductive part along the thickness direction Z of the display panel overlaps at least partially with the projection of the second thermoelectric element 34 along the thickness direction Z. Exemplarily, the projection of the second thermoelectric element 34 along the thickness direction Z is located within the projection of the first conductive connecting part 31 along the thickness direction Z; or, a portion of the projection of the second thermoelectric element 34 along the thickness direction Z overlaps with a portion of the projection of the first conductive connecting part 31 along the thickness direction Z.

[0050] Optionally, the projection of the second conductive part along the thickness direction Z of the display panel at least partially overlaps with the projection of the first thermoelectric element 33 along the thickness direction Z. Exemplarily, the projection of the first thermoelectric element 33 along the thickness direction Z is located within the projection of the second conductive connecting part 32 along the thickness direction Z; or, a portion of the projection of the first thermoelectric element 33 along the thickness direction Z overlaps with a portion of the projection of the second conductive connecting part 32 along the thickness direction Z.

[0051] Optionally, the projection of the second conductive part along the thickness direction Z of the display panel at least partially overlaps with the projection of the second thermoelectric element 34 along the thickness direction Z. Exemplarily, the projection of the second thermoelectric element 34 along the thickness direction Z is located within the projection of the second conductive connecting part 32 along the thickness direction Z; or, a portion of the projection of the second thermoelectric element 34 along the thickness direction Z overlaps with a portion of the projection of the second conductive connecting part 32 along the thickness direction Z.

[0052] Optionally, the size of the first thermoelectric element 33 along the thickness direction Z and the size of the second thermoelectric element 34 along the thickness direction Z may be the same, or may be different.

[0053] Optionally, the thickness of the first conductive connection portion 31 and the thickness of the second conductive connection portion 32 may be the same, or may be different.

[0054] Optionally, the first thermoelectric element 33 and the second thermoelectric element 34 may be insulated by an insulating film layer.

[0055] At least one of the multiple functional conductive layers is reused as the first conductive connection portion 31 , which can be understood as that the conductive circuit in one or more functional conductive layers and the first conductive connection portion 31 are located in the same film layer.

[0056] The touch conductive layer L is reused as the second conductive connection portion 32 , which can be understood as the conductive circuit in the touch conductive layer L and the second conductive connection portion 32 being located in the same film layer.

[0057] Temperature dependence is a property that describes how a physical quantity changes with temperature. Temperature dependence usually refers to how certain physical quantities (such as resistance, capacitance, inductance, thermal conductivity, magnetic permeability, etc.) change with temperature. For example, how the thermoelectric potential (or temperature difference electromotive force) of a semiconductor changes with temperature gradient.

[0058] One end of the first thermoelectric element 33 and one end of the second thermoelectric element 34 are both electrically connected to the first conductive connection part 31, and the other end of the first thermoelectric element 33 and the other end of the second thermoelectric element 34 are both electrically connected to the second conductive connection part 32, so that the first thermoelectric element 33 and the second thermoelectric element 34 and the first conductive connection part 31 and the second conductive connection part 32 constitute a thermoelectric conversion circuit C. The thermoelectric conversion circuit C can convert heat in the display panel into electrical energy through the Seebeck effect principle. Specifically, the heat on the side of the display panel close to the first conductive connection part 31 is greater than the heat on the side of the display panel close to the second conductive connection part 32, so that the temperature of the end of the first thermoelectric element 33 close to the first conductive connection part 31 (hereinafter referred to as the first hot end 331) is greater than the temperature of the end of the first thermoelectric element 33 close to the second conductive connection part 32 (hereinafter referred to as the first cold end 332), thereby forming a temperature gradient at both ends of the first thermoelectric element 33 along the thickness direction Z; the temperature of the end of the second thermoelectric element 34 close to the first conductive connection part 31 (hereinafter referred to as the second hot end 341) is greater than the temperature of the end of the second thermoelectric element 34 close to the second conductive connection part 32 (hereinafter referred to as the second cold end 342), thereby forming a temperature gradient at both ends of the second thermoelectric element 34 along the thickness direction Z. In the Seebeck effect, the carriers (such as electrons or holes) at the hot end will diffuse to the cold end, so that a thermoelectric potential will be generated in the thermoelectric conversion circuit C, thereby generating a current in the thermoelectric conversion circuit C. As the temperature rises, the energy of the hot end carriers increases, the diffusion effect is enhanced, and the generated thermoelectric potential also increases.

[0059] According to the display panel provided by the present application, a thermoelectric conversion circuit C is added in the display panel, and the thermoelectric conversion circuit C can convert the excess heat energy generated in the display panel into electrical energy for use by the display panel. In addition, the thermoelectric conversion element 30 includes a first conductive connection portion 31, a second conductive connection portion 32, a first thermoelectric element 33 and a second thermoelectric element 34. The thermoelectric conversion circuit C can convert the excess heat energy generated in the display panel into electrical energy for use by the display panel, which can not only help the display panel to dissipate heat, but also improve the battery life of the display panel, thereby solving the technical problem of poor battery life of the display panel in the prior art.

[0060] Figure 5 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0061] Figure 6A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0062] like Figure 1 , Figure 5 as well as Figure 6 As shown, in some optional embodiments, the display substrate 10 includes an array substrate 11 and a display function layer 12. The array substrate 11 includes a drive circuit layer 112. The display function layer 12 is located on one side of the array substrate 11, and the display function layer 12 includes an electrode layer. The touch layer 20 is located on the side of the display function layer 12 that is away from the array substrate 11. Among them, one of the drive circuit layer 112 and the electrode layer is reused as the first conductive connection portion 31.

[0063] Optionally, the array substrate 11 may further include a substrate 111 , the driving circuit layer 112 is located on one side of the substrate 111 , and the display function layer 12 is located on a side of the driving circuit layer 112 facing away from the substrate 111 .

[0064] Optionally, the driving circuit layer 112 may include a data circuit, a scanning circuit, a thin film transistor, and other circuits. Figure 5 As shown, when the driving circuit layer 112 is reused as the first conductive connection part 31, the data circuit and the first conductive connection part 31 may be the same film layer; or, the scanning circuit and the first conductive connection part 31 may be the same film layer; or, a conductive structure in the thin film transistor and the first conductive connection part 31 may be the same film layer. Taking the data circuit and the first conductive connection part 31 as the same film layer as an example, the data circuit and the first conductive connection part 31 may be arranged at intervals; or, a part of the data circuit may be reused as the first conductive connection part 31.

[0065] Optionally, the electrode layer may include an anode and a cathode, such as Figure 1 and Figure 6 As shown, when the electrode layer is reused as the first conductive connection part 31, the anode and the first conductive connection part 31 are the same film layer; or, the cathode and the first conductive connection part 31 are the same film layer. Exemplarily, the anode and the first conductive connection part 31 can be arranged at intervals; or, a part of the anodes in the anodes is reused as the first conductive connection part 31. Exemplarily, the cathode and the first conductive connection part 31 can be arranged at intervals; or, a part of the cathodes in the cathodes is reused as the first conductive connection part 31.

[0066] In these optional embodiments, the above configuration is helpful to improve the flexibility of the arrangement of the first conductive portion, so that the thermoelectric conversion circuit C can absorb the heat of a preset area of ​​the display panel in a targeted manner, thereby improving the thermoelectric conversion efficiency and further improving the battery life of the display panel.

[0067] Figure 7A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0068] like Figure 1 , Figure 6 and Figure 7 As shown, in some optional embodiments, the display function layer 12 further includes a display layer 123, the electrode layer includes a first electrode layer 121 and a second electrode layer 122, the first electrode layer 121 includes a first electrode 121a, the second electrode layer 122 includes a second electrode 122a, and the display layer 123 is located between the first electrode layer 121 and the second electrode layer 122. Among them, at least one of the first electrode 121a and the second electrode 122a is reused as the first conductive connection portion 31.

[0069] Optionally, the first electrode 121a may be located between the second electrode 122a and the array substrate 11, and the number of the first electrode 121a may be multiple. The second electrode 122a may be a whole-surface electrode, and the whole-surface electrode covers the display area AA of the display panel. Of course, the number of the second electrode 122a may be multiple. Optionally, one of the first electrode 121a and the second electrode 122a is an anode, and the other is a cathode. For example, the first electrode 121a is an anode, and the second electrode 122a is a cathode.

[0070] In some embodiments, Figure 6 As shown, the first electrode 121a is reused as the first conductive connection portion 31. In other embodiments, as shown in FIG. Figure 1 As shown, the second electrode 122a is reused as the first conductive connection portion 31. In some other embodiments, such as Figure 7 As shown, the first electrode 121a and the second electrode 122a are both multiplexed as the first conductive connection portion 31. For example, the first electrode 121a is multiplexed as the first conductive connection portion 31 of one of the two thermoelectric conversion circuits C, and the second electrode 122a is multiplexed as the first conductive connection portion 31 of the other of the two thermoelectric conversion circuits C. Alternatively, the first conductive connection portion 31 includes two parts, the first electrode 121a is multiplexed as a part of the first conductive connection portion 31, and the second electrode 122a is multiplexed as the other part of the first conductive connection portion 31.

[0071] In these optional embodiments, during the display process of the display panel, the first electrode 121a and the second electrode 122a need to provide voltage all the time, so that the first electrode 121a and the second electrode 122a generate heat during the operation process. By reusing the first electrode 121a and / or the second electrode 122a as the first conductive connection part 31, the heat generated in the first electrode 121a and / or the second electrode 122a is the heat generated by the hot end, thereby increasing the thermoelectric potential, thereby increasing the conversion efficiency of the thermoelectric conversion circuit C, and further increasing the endurance of the display panel.

[0072] Figure 8 A schematic top view of a first thermoelectric element, a second thermoelectric element, and a pixel opening in a display panel provided in some embodiments of the present application. Fig. 9 A schematic top view of a first thermoelectric element, a second thermoelectric element, and a pixel opening in another display panel provided in some embodiments of the present application.

[0073] like Figures 7 to 9 As shown, in some optional embodiments, the display function layer 12 also includes a pixel definition layer 124 and a display layer 123, the pixel definition layer 124 includes a pixel defining portion 124a and a pixel opening 124b formed by the pixel defining portion 124a, the display layer 123 includes a display unit 123a, the display unit 123a is arranged in the pixel opening 124b, and the projection of the first thermoelectric element 33 along the thickness direction Z and the projection of the second thermoelectric element 34 along the thickness direction Z are both spaced apart from the projection of the pixel opening 124b along the thickness direction Z.

[0074] Optionally, the number of the pixel openings 124 b includes a plurality, the pixel defining portion 124 a encloses a plurality of pixel openings 124 b , and the plurality of pixel openings 124 b are arranged in an array in the display panel.

[0075] Optionally, the display unit 123a may include display units 123a of different colors. For example, the display unit 123a includes a red display unit 123a, a blue display unit 123a, and a green display unit 123a.

[0076] Optionally, the shape of the pixel opening 124 b may be rectangular, circular or other shapes.

[0077] Optionally, the projection shape of the first thermoelectric element 33 along the thickness direction Z can match the outline of the shape of the pixel opening 124b. For example, the shape of the pixel opening 124b is rectangular, and the shape of the first thermoelectric element 33 along the thickness direction Z can be linear, L-shaped, or other shapes. For example, the shape of the pixel opening 124b is circular, and the shape of the first thermoelectric element 33 along the thickness direction Z can be arc-shaped. Of course, the projection shape of the first thermoelectric element 33 along the thickness direction Z can also be other shapes.

[0078] Optionally, the projection shape of the second thermoelectric element 34 along the thickness direction Z can match the outline of the shape of the pixel opening 124b. For example, the shape of the pixel opening 124b is rectangular, and the shape of the second thermoelectric element 34 along the thickness direction Z can be linear, L-shaped, or other shapes. For example, the shape of the pixel opening 124b is circular, and the shape of the first thermoelectric element 33 along the thickness direction Z can be arc-shaped. Of course, the projection shape of the second thermoelectric element 34 along the thickness direction Z can also be other shapes.

[0079] Optionally, the first thermoelectric element 33 and the second thermoelectric element 34 can be located at the same side edge of the pixel opening 124b; the first thermoelectric element 33 and the second thermoelectric element 34 can also be located at the opposite side edges of the pixel opening 124b respectively; the first thermoelectric element 33 and the second thermoelectric element 34 can also be located at the adjacent side edges of the pixel opening 124b respectively.

[0080] In these optional embodiments, the above configuration is helpful to reduce the possibility of the first thermoelectric element 33 and the second thermoelectric element 34 blocking the light emitted by the display unit 123a, thereby improving the display effect of the display panel.

[0081] like Figure 7 and Figure 8 As shown, in some optional embodiments, the projection of the first thermoelectric element 33 along the thickness direction Z and the projection of the second thermoelectric element 34 along the thickness direction Z are arranged on both sides of the projection of the display unit 123a along the thickness direction Z along the first direction X, and the first direction X is perpendicular to the thickness direction Z.

[0082] In these optional embodiments, the above configuration is helpful to reduce the possibility of the first thermoelectric element 33 and the second thermoelectric element 34 blocking the light emitted by the display unit 123a, and reduce the possibility of color cast on the display panel at different viewing angles.

[0083] Fig.10 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0084] like Fig.10 As shown, in some optional embodiments, along the first direction X, a reflective layer 40 is provided on a side of at least one of the first thermoelectric element 33 and the second thermoelectric element 34 facing the display unit 123 a , and the first direction X is perpendicular to the thickness direction Z.

[0085] In some examples, along the first direction X, the first thermoelectric element 33 and the second thermoelectric element 34 are provided with a reflective layer 40 on one side facing the display unit 123a. In other examples, along the first direction X, the first thermoelectric element 33 is provided with a reflective layer 40 on one side facing the display unit 123a. In other examples, along the first direction X, the second thermoelectric element 34 is provided with a reflective layer 40 on one side facing the display unit 123a.

[0086] In these optional embodiments, by providing the reflective layer 40 , it is helpful to improve the display brightness of the display unit 123 a , thereby improving the display effect of the display panel.

[0087] Fig.11 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0088] like Fig.11 As shown, in some optional embodiments, the display function layer 12 further includes a pixel definition layer 124, the pixel definition layer includes a pixel definition portion 124a and a pixel opening 124b formed by the pixel definition portion, the display layer 123 includes a display unit 123a, the display unit is arranged in the pixel opening 124b, and at least one of the projection of the first thermoelectric element 33 along the thickness direction Z and the projection of the second thermoelectric element 34 along the thickness direction Z overlaps at least partially with the projection of the pixel opening 124b along the thickness direction Z. The materials of the first thermoelectric element 33 and the second thermoelectric element 34 include light-transmitting materials.

[0089] As an example, a portion of the projection of the first thermoelectric element 33 along the thickness direction Z is overlapped with the projection of the pixel opening 124b along the thickness direction Z; or, the projection of the first thermoelectric element 33 along the thickness direction Z falls within the projection of the pixel opening 124b along the thickness direction Z. A portion of the projection of the second thermoelectric element 34 along the thickness direction Z is overlapped with the projection of the pixel opening 124b along the thickness direction Z; or, the projection of the second thermoelectric element 34 along the thickness direction Z falls within the projection of the pixel opening 124b along the thickness direction Z.

[0090] In some examples, the projection of the first thermoelectric element 33 along the thickness direction Z and the projection of the second thermoelectric element 34 along the thickness direction Z both overlap at least partially with the projection of the pixel opening 124b along the thickness direction Z. In other examples, the projection of the first thermoelectric element 33 along the thickness direction Z overlaps at least partially with the projection of the pixel opening 124b along the thickness direction Z. In other examples, the projection of the second thermoelectric element 34 along the thickness direction Z overlaps at least partially with the projection of the pixel opening 124b along the thickness direction Z.

[0091] Optionally, the material of the first thermoelectric element 33 includes a light-transmitting material, for example, the material of the first thermoelectric element 33 is zinc oxide (ZnO), indium tin oxide (ITO), bismuth molybdenum oxide (Bi2MoO6) and the like.

[0092] In these optional embodiments, by setting the first thermoelectric element 33 and the second thermoelectric element 34 to be light-transmitting materials, it is helpful to reduce the first thermoelectric element 33 and the second thermoelectric element 34 from blocking the light of the display unit 123a, while improving the arrangement flexibility of the first thermoelectric element 33 and the second thermoelectric element 34.

[0093] Fig.12 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0094] like Fig.12 As shown, in some optional embodiments, the display substrate 10 includes an array substrate 11, a display function layer 12 and an encapsulation layer 13, the display function layer 12 is located between the encapsulation layer 13 and the array substrate 11, the encapsulation layer 13 includes a first encapsulation layer 131, a second encapsulation layer 132 and a third encapsulation layer 133, the functional conductive layer also includes a first conductive layer 14 located between the first encapsulation layer 131 and the second encapsulation layer 132, and the first conductive layer is reused as at least a part of the first conductive connection portion 31.

[0095] Optionally, the first encapsulation layer 131 , the second encapsulation layer 132 , and the third encapsulation layer 133 may be inorganic encapsulation layer-organic encapsulation layer-inorganic encapsulation layer in sequence, respectively.

[0096] Optionally, the touch control layer 20 is located on a side of the encapsulation layer 13 facing away from the display function layer 12 .

[0097] In some examples, the first conductive layer 14 is reused as the first conductive connection portion 31. In other examples, the first conductive layer 14 is reused as a part of the first conductive connection portion 31.

[0098] Optionally, the first conductive layer 14 may include a shielding circuit, which may shield the possibility of mutual interference between the touch signal in the touch layer 20 and the control signal in the driving circuit layer 112. At least part of the shielding circuit may be reused as at least part of the first conductive connection portion 31.

[0099] Optionally, the material of the first conductive layer 14 may be a transparent material, and the material may be a transparent conductive material such as indium tin oxide (ITO), zinc oxide (ZnO), indium zinc oxide (IZO), conductive polymer, metal nanowire, etc.

[0100] In these optional embodiments, the above-mentioned configuration is helpful to reduce the impact of the thermoelectric conversion circuit C on the display unit 123a, the control circuit and other functional circuits, while shortening the distance between the hot end and the heat source in the display panel, thereby improving the conversion efficiency of the thermoelectric conversion circuit C and further improving the battery life of the display panel.

[0101] In some embodiments, the first conductive connection part 31 and the second conductive connection part 32 can be formed by a single preparation process together with the functional conductive layer and the touch conductive layer L in the display panel. After the touch layer 20 is prepared, the first thermoelectric element 33 and the second thermoelectric element 34 are prepared by etching holes through the preset film layer.

[0102] like Fig.11 As shown, in some optional embodiments, the first conductive connection portion 31 includes a first end 311 and a second end 312 electrically connected to each other, the first end 311 is electrically connected to the first thermoelectric element 33, the second end 312 is electrically connected to the second thermoelectric element 34, and the first end 311 and the second end 312 are arranged in the same layer.

[0103] In these optional embodiments, the above-mentioned configuration is helpful to reduce the difficulty of preparing the first conductive connecting part 31, and at the same time make the first hot end 331 of the first thermoelectric element 33 and the second hot end 341 of the second thermoelectric element 34 have similar temperatures, thereby reducing the thermal stress caused by the temperature difference and improving the service life of the thermoelectric elements.

[0104] Fig.13 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0105] like Fig.13 As shown, in some optional embodiments, the first conductive connection portion 31 includes a first end 311 and a second end 312 electrically connected to each other, the first end is electrically connected to the first thermoelectric element 33, the second end 312 is electrically connected to the second thermoelectric element 34, and the first end 311 and the second end 312 are arranged in different layers.

[0106] Alternatively, if Fig.13 As shown, the driving circuit layer 112 is multiplexed as the first end 311, and the electrode layer is multiplexed as the second end 312; or, the driving circuit layer 112 is multiplexed as the first end 311, and the first conductive layer 14 is multiplexed as the second end 312; or, the conductive film layer where the scanning circuit in the driving circuit layer 112 is located is multiplexed as the first end 311, and the conductive film layer where the data circuit in the driving circuit layer 112 is located is multiplexed as the second end 312; or, the first electrode 121a is multiplexed as the first end 311, and the second electrode 122a is multiplexed as the second end 312. Optionally, the first end 311 and the second end 312 can be electrically connected through a via.

[0107] It can be understood that when the first end portion 311 and the second end portion 312 are arranged in different layers, the size of the first thermoelectric element 33 along the thickness direction Z and the size of the second thermoelectric element 34 along the thickness direction Z are different.

[0108] In these optional embodiments, through the above-mentioned settings, the temperature difference between the first hot end 331 electrically connected to the first end 311 and the second hot end 341 electrically connected to the second end 312 is increased, so that the thermoelectric conversion circuit C can generate a larger thermoelectric potential, improve the thermoelectric conversion efficiency, and thereby improve the battery life of the display panel.

[0109] Fig.14 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0110] like Figures 1 to 4 as well as Fig.14 As shown, in some optional embodiments, the touch layer 20 includes touch electrodes 21 and touch traces 22 that are electrically connected to each other, and at least one of the touch conductive layer L where the touch electrodes are located and the touch conductive layer L where the touch traces 22 are located is reused as the second conductive connection portion 32.

[0111] In some examples, such as Fig.14 As shown in FIG. 1 , the touch conductive layer L where the touch electrode 21 is located and the touch conductive layer L where the touch trace 22 is located are both reused as the second conductive connection portion 32. In other examples, such as Figure 1 and Figure 2 As shown, the touch conductive layer L where the touch electrode 21 is located is reused as the second conductive connection portion 32. In some other examples, such as Figure 3 and Figure 4 As shown, the touch conductive layer L where the touch trace 22 is located is reused as the second conductive connection portion 32 .

[0112] Optionally, when the touch conductive layer L where the touch electrode 21 is located is reused as the second conductive connection portion 32, at least part of the touch electrode 21 can be reused as at least part of the second conductive connection portion 32; or, the touch electrode 21 and the second conductive connection portion 32 are arranged at intervals.

[0113] Optionally, when the touch conductive layer L where the touch trace 22 is located is reused as the second conductive connection portion 32, at least part of the touch trace 22 can be reused as at least part of the second conductive connection portion 32; or, the touch trace 22 and the second conductive connection portion 32 are arranged at intervals.

[0114] In these optional embodiments, the above configuration is helpful to improve the arrangement flexibility of the second conductive connection part 32, reduce the process steps of the second conductive connection part 32, reduce the manufacturing cost, and improve the production efficiency.

[0115] like Figure 1 As shown, in some optional embodiments, the touch electrode 21 includes a touch function electrode 211 and a jumper electrode 212, two adjacent touch function electrodes 211 are electrically connected through the jumper electrode 212, the touch conductive layer L includes a first touch conductive layer L1 and a second touch conductive layer L2 that are stacked, the touch electrode 21 is arranged on the first touch conductive layer L1, the jumper electrode 212 is arranged on the second touch conductive layer L2, the second conductive connecting portion 32 is arranged on the second touch conductive layer L2, and the second conductive connecting portion 32 is spaced apart from the jumper electrode 212.

[0116] Optionally, the touch function electrode 211 may include a first touch function electrode and a second touch function electrode, and the plurality of first touch function electrodes and the plurality of second touch function electrodes are arranged in an array along the first direction X and the second direction. Optionally, the plurality of first touch function electrodes form a touch row along the first direction X, and the plurality of second touch function electrodes form a touch column along the second direction, and the plurality of touch rows are sequentially arranged along the second direction, and the plurality of touch columns are sequentially arranged along the first direction X. Optionally, in a touch row, two adjacent first touch function electrodes are electrically connected via the jumper electrode 212.

[0117] Optionally, the first touch function electrode and the second touch function electrode are both arranged on the first touch conductive layer L1.

[0118] Optionally, a projection of the jumper electrode 212 along the thickness direction Z and a projection of the touch electrode 21 along the thickness direction Z are arranged not to overlap.

[0119] Optionally, a projection of the second conductive connection portion 32 along the thickness direction Z and a projection of the touch electrode 21 along the thickness direction Z are at least partially overlapped.

[0120] In these optional embodiments, by spacing the second conductive connection portion 32 and the jumper electrode 212 , it is helpful to reduce the crosstalk between the thermoelectric conversion circuit C and the touch signal, improve the stability of touch signal transmission, and improve the touch effect.

[0121] like Fig.13 As shown, in some optional embodiments, the second conductive connection portion 32 includes a third end 321 and a fourth end 322 that are electrically connected to each other, the third end is electrically connected to the first thermoelectric element 33, the fourth end 322 is electrically connected to the second thermoelectric element 34, and the third end 321 and the fourth end 322 are arranged on the same layer.

[0122] Optionally, the first end 311 and the second end 312 are disposed in the same layer, and the third end 321 and the fourth end 322 are disposed in the same layer. Alternatively, the first end 311 and the second end 312 are disposed in different layers, and the third end 321 and the fourth end 322 are disposed in the same layer.

[0123] Optionally, the third end 321 and the fourth end 322 may both be located at the touch conductive layer L where the touch electrode 21 is located; the third end 321 and the fourth end 322 may also both be located at the touch conductive layer L where the touch trace 22 is located.

[0124] In these optional embodiments, through the above-mentioned settings, the temperature of the first cold end 332 electrically connected to the third end 321 is close to the temperature of the second cold end 342 electrically connected to the fourth end 322, thereby reducing the thermoelectric potential fluctuation caused by the temperature difference, thereby improving the stability of the thermoelectric conversion efficiency.

[0125] Fig.15 A schematic cross-sectional structure diagram of another display panel provided in some embodiments of the present application.

[0126] like Fig.14 and Fig.15 As shown, in some optional embodiments, the second conductive connection portion 32 includes a third end 321 and a fourth end 322 that are electrically connected to each other, the third end is electrically connected to the first thermoelectric element 33, the fourth end 322 is electrically connected to the second thermoelectric element 34, and the third end 321 and the fourth end 322 are arranged in different layers.

[0127] Optionally, the third end 321 is located at the touch conductive layer L where the touch electrode 21 is located, and the fourth end 322 is located at the touch conductive layer L where the touch trace 22 is located; or, the third end 321 is located at the touch conductive layer L where the touch trace 22 is located, and the fourth end 322 is located at the touch conductive layer L where the touch electrode 21 is located.

[0128] Alternatively, if Fig.14 As shown, the first end 311 and the second end 312 are arranged in the same layer, and the third end 321 and the fourth end 322 are arranged in different layers, so that the size of the first thermoelectric element 33 along the thickness direction Z is different from the size of the second thermoelectric element 34 along the thickness direction Z. The longer thermoelectric element has a higher thermoelectric potential output, but will increase the internal resistance and heat loss; the shorter thermoelectric element has a lower internal resistance and heat loss, but will reduce the thermoelectric potential output. By adjusting the length ratio of the first thermoelectric element 33 and the second thermoelectric element 34, it is beneficial to increase the thermoelectric potential output while reducing the internal resistance and heat loss, thereby improving the thermoelectric conversion efficiency.

[0129] Alternatively, if Fig.15As shown, the first end 311 and the second end 312 are arranged in different layers, and the third end 321 and the fourth end 322 are arranged in different layers, so that the size of the first thermoelectric element 33 along the thickness direction Z is the same as the size of the second thermoelectric element 34 along the thickness direction Z, which is conducive to improving the distribution accuracy of the temperature gradient in the first thermoelectric element 33 and the second thermoelectric element 34, and improving the thermoelectric conversion efficiency. At the same time, the design of the length ratio of the first thermoelectric element 33 and the second thermoelectric element 34 is simplified, and the matching and connection difficulties between thermoelectric elements of different sizes are reduced, and the manufacturing cost is reduced. Of course, when the first end 311 and the second end 312 are arranged in different layers, the size of the first thermoelectric element 33 along the thickness direction Z and the size of the second thermoelectric element 34 along the thickness direction Z can also be different.

[0130] In these optional embodiments, a temperature difference is created between the temperature of the first cold end 332 electrically connected to the third end 321 and the temperature of the second cold end 342 electrically connected to the fourth end 322, which is beneficial for adjusting the carrier distribution inside the thermoelectric element, optimizing the thermoelectric conversion process, and improving the battery life of the display panel.

[0131] In some optional embodiments, the conductivity type of the first thermoelectric element 33 is different from the conductivity type of the second thermoelectric element 34 .

[0132] Exemplarily, the first thermoelectric element 33 is an N-type semiconductor, and the second thermoelectric element 34 is a P-type semiconductor. Of course, the first thermoelectric element 33 may also be a P-type semiconductor, and the second thermoelectric element 34 may be an N-type semiconductor.

[0133] Alternatively, the material of the thermoelectric element may include bismuth antimony telluride-based material ((Bi, Sb) 2 Te 3 -based material), lead telluride-based material (PbTe-based material), or PbTe-based material (CoSb 3 -based material).

[0134] In these optional embodiments, by selecting thermoelectric elements with different conductivity types, it is helpful to improve the complementarity of thermoelectric conversion, thereby improving the thermoelectric conversion efficiency and further improving the endurance of the display panel.

[0135] In some optional embodiments, the number of the thermoelectric conversion circuits C includes multiple thermoelectric conversion circuits C, the multiple thermoelectric conversion circuits C are arranged in an array, and at least some of the multiple thermoelectric conversion circuits are connected in series and / or in parallel.

[0136] In some examples, multiple thermoelectric conversion loops C are arranged in series. In other examples, multiple thermoelectric conversion loops C are arranged in parallel. In other examples, some of the multiple thermoelectric conversion loops C are arranged in series, and other parts are arranged in parallel.

[0137] The embodiment of the present application adopts the above configuration, and by providing multiple thermoelectric conversion circuits C, it is beneficial to disperse the thermal stress to each thermoelectric conversion circuit C, thereby reducing the thermal stress borne by a single thermoelectric conversion circuit C and improving the service life of the thermoelectric conversion circuit. By providing multiple thermoelectric conversion circuits C in series and / or in parallel, it is beneficial to reduce the overall total resistance while improving the overall total thermoelectric potential, improving the thermoelectric conversion efficiency, and thus improving the endurance of the display panel.

[0138] In a second aspect, an embodiment of the present application further provides a display device, comprising a display panel according to any one of the above-described embodiments.

[0139] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: A display substrate and a touch layer are stacked, wherein the display substrate includes multiple functional conductive layers, and the touch layer includes a touch conductive layer; A thermoelectric conversion component includes a first conductive connection part, a second conductive connection part, a first thermoelectric element and a second thermoelectric element, wherein the first thermoelectric element and the second thermoelectric element are arranged between the first conductive connection part and the second conductive connection part and are spaced apart from each other, the first thermoelectric element and the second thermoelectric element have different temperature dependences, at least one of the multiple functional conductive layers is reused as the first conductive connection part, the touch conductive layer is reused as the second conductive connection part, and the first thermoelectric element and the second thermoelectric element are electrically connected via the first conductive connection part and the second conductive connection part to form a thermoelectric conversion circuit.

2. The display panel according to claim 1, characterized in that: The display substrate comprises: An array substrate, comprising a driving circuit layer; A display function layer is located on one side of the array substrate, the display function layer includes an electrode layer, and the touch control layer is located on a side of the display function layer facing away from the array substrate; Wherein, one of the driving circuit layer and the electrode layer is reused as the first conductive connection portion.

3. The display panel according to claim 2, characterized in that: The display function layer further includes a display layer, the electrode layer includes a first electrode layer and a second electrode layer, the first electrode layer includes a first electrode, the second electrode layer includes a second electrode, and the display layer is located between the first electrode layer and the second electrode layer; At least one of the first electrode and the second electrode is reused as the first conductive connection portion.

4. The display panel according to claim 2, characterized in that: The display function layer also includes a pixel definition layer and a display layer, the pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion, the display layer includes a display unit, the display unit is arranged in the pixel opening, and the projection of the first thermoelectric element along the thickness direction and the projection of the second thermoelectric element along the thickness direction are both arranged to be spaced apart from the projection of the pixel opening along the thickness direction.

5. The display panel according to claim 4, characterized in that: The projection of the first thermoelectric element along the thickness direction and the projection of the second thermoelectric element along the thickness direction are arranged on both sides of the projection of the display unit along the thickness direction along a first direction, and the first direction is perpendicular to the thickness direction.

6. The display panel according to claim 4, characterized in that: A reflective layer is provided on a side of at least one of the first thermoelectric element and the second thermoelectric element facing the display unit along a first direction, and the first direction is perpendicular to the thickness direction.

7. The display panel according to claim 3, characterized in that: The display function layer further includes a pixel definition layer, the pixel definition layer includes a pixel definition portion and a pixel opening formed by the pixel definition portion, the display layer includes a display unit, the display unit is arranged in the pixel opening, and at least one of a projection of the first thermoelectric element along the thickness direction and a projection of the second thermoelectric element along the thickness direction at least partially overlaps with a projection of the pixel opening along the thickness direction; Wherein, the material of the first thermoelectric element and the second thermoelectric element includes a light-transmitting material.

8. The display panel according to claim 1, characterized in that: The display substrate includes an array substrate, a display function layer and an encapsulation layer, the display function layer is located between the encapsulation layer and the array substrate, the encapsulation layer includes a first encapsulation layer, a second encapsulation layer and a third encapsulation layer, the functional conductive layer also includes a first conductive layer located between the first encapsulation layer and the second encapsulation layer, and the first conductive layer is reused as at least a part of the first conductive connection portion.

9. The display panel according to any one of claims 1 to 8, characterized in that: The first conductive connection portion includes a first end portion and a second end portion electrically connected to each other, the first end portion is electrically connected to the first thermoelectric element, the second end portion is electrically connected to the second thermoelectric element, and the first end portion and the second end portion are arranged in the same layer.

10. The display panel according to any one of claims 1 to 8, characterized in that: The first conductive connection portion includes a first end portion and a second end portion electrically connected to each other, the first end portion is electrically connected to the first thermoelectric element, the second end portion is electrically connected to the second thermoelectric element, and the first end portion and the second end portion are arranged in different layers.

11. The display panel according to claim 1, characterized in that: The touch layer includes touch electrodes and touch traces electrically connected to each other, and at least one of the touch conductive layer where the touch electrodes are located and the touch conductive layer where the touch traces are located is reused as the second conductive connection portion.

12. The display panel according to claim 11, characterized in that: The touch electrode includes a touch function electrode and a jumper electrode, two adjacent touch function electrodes are electrically connected through the jumper electrode, the touch conductive layer includes a first touch conductive layer and a second touch conductive layer which are stacked, the touch electrode is arranged on the first touch conductive layer, the jumper electrode is arranged on the second touch conductive layer, the second conductive connecting portion is arranged on the second touch conductive layer, and the second conductive connecting portion is spaced apart from the jumper electrode.

13. The display panel according to claim 12, characterized in that: The second conductive connection portion includes a third end and a fourth end electrically connected to each other, the third end is electrically connected to the first thermoelectric element, the fourth end is electrically connected to the second thermoelectric element, and the third end and the fourth end are arranged in the same layer.

14. The display panel according to claim 1, characterized in that: The second conductive connection portion includes a third end and a fourth end electrically connected to each other, the third end is electrically connected to the first thermoelectric element, the fourth end is electrically connected to the second thermoelectric element, and the third end and the fourth end are arranged in different layers.

15. The display panel according to claim 1, characterized in that: The conductivity type of the first thermoelectric element is different from the conductivity type of the second thermoelectric element.

16. The display panel according to claim 1, characterized in that: The number of the thermoelectric conversion circuits includes multiple, the multiple thermoelectric conversion circuits are arranged in an array, and at least some of the multiple thermoelectric conversion circuits are arranged in series and / or in parallel.

17. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 16.

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