Display panel and display device

Abstract

The invention discloses a display panel, which comprises a substrate, a plurality of light-emitting elements and a temperature sensing capacitor, and is characterized in that the substrate comprises a first area; the light-emitting element is located on one side of the substrate and located in the first area. The temperature sensing capacitor is located in the first area; the temperature sensing capacitor comprises a first capacitor plate, a second capacitor plate and a dielectric layer located between the first capacitor plate and the second capacitor plate. The first capacitor plate is positioned on one side of the substrate close to the light-emitting element; the second capacitor plate is located on one side of the first capacitor plate away from the substrate. According to the technical scheme, brightness compensation can be achieved, and color cast is optimized.

Description

Technical Field

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

[0002] With the continuous development of display technologies, the technologies of display products have become increasingly mature. As a result, users' requirements for display screens are also getting higher and higher. In the process of displaying a screen, taking an LED display device as an example, when displaying a screen, the higher the temperature, the lower the luminous efficiency, and the light efficiency decay ratios of LEDs of different colors are different. Thus, phenomena such as color deviation and other screen abnormalities are likely to occur. Summary of the Invention

[0003] The present invention provides a display panel and a display device to achieve brightness compensation and optimize color deviation.

[0004] According to one aspect of the present invention, there is provided a display panel, including:

[0005] A substrate; the substrate includes a first region;

[0006] A plurality of light-emitting elements, located on one side of the substrate and in the first region;

[0007] A temperature-sensitive capacitor, located in the first region; the temperature-sensitive capacitor includes a first capacitor plate, a second capacitor plate, and a dielectric layer located between the first capacitor plate and the second capacitor plate; the first capacitor plate is located on the side of the substrate close to the light-emitting element; the second capacitor plate is located on the side of the first capacitor plate away from the substrate.

[0008] According to another aspect of the present invention, there is provided a display device including the display panel provided in any embodiment of the present invention.

[0009] The technical solution of the embodiment of the present invention can achieve real-time and accurate temperature sensing through the temperature-sensitive capacitor added in the display panel, and then perform brightness compensation according to the temperature monitoring result to optimize color deviation. Since the capacitor can achieve a transparent design, the present invention has great advantages in transparent display devices. In addition, the temperature-sensitive capacitor is composed of a capacitor plate and a dielectric layer, and its production can be made compatible with the original structure of the display panel, which is beneficial to reducing the product thickness.

[0010] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understandable through the following description. Brief Description of the Drawings

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0012] Figure 1 It is a schematic top view structure diagram of a display panel provided by an embodiment of the present invention;

[0013] Figure 2 It is along Figure 1 A schematic cross-sectional structure diagram of a display panel taken along BB' in

[0014] Figure 3 It is along Figure 1 Another schematic cross-sectional structure diagram of a display panel taken along BB' in

[0015] Figure 4 It is along Figure 1 Another schematic cross-sectional structure diagram of a display panel taken along BB' in

[0016] Figure 5 It is along Figure 1 Another schematic cross-sectional structure diagram of a display panel taken along BB' in

[0017] Figure 6 It is a schematic top view structure diagram of another display panel provided by an embodiment of the present invention;

[0018] Figure 7 It is along Figure 6 A schematic cross-sectional structure diagram of a display panel taken along DD' in

[0019] Figure 8 It is a schematic top view structure diagram of another display panel provided by an embodiment of the present invention;

[0020] Figure 9 It is along Figure 8 A schematic cross-sectional structure diagram of a display panel taken along EE' in

[0021] Figure 10 It is a schematic structure diagram of another display panel provided by an embodiment of the present invention;

[0022] Figure 11 It is along Figure 10 A schematic structure diagram of a display panel taken along PP' in

[0023] Figure 12 It is a schematic top view structure diagram of another display panel provided by an embodiment of the present invention;

[0024] Figure 13 It is a top - view structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0025] Figure 14 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. Specific embodiments

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Without departing from the spirit or scope of the present application, various modifications and changes can be made in the present application, which are obvious to those skilled in the art. Therefore, the present application is intended to cover the modifications and changes of the present application that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in the embodiments of the present application can be combined with each other without conflict.

[0028] First of all, it should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meaning understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" and its similar terms mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. "Connection" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Similar terms such as "up", "down", "left" and "right" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly. In addition, the shapes and sizes of the components in the drawings do not reflect the actual proportions, and the purpose is only to schematically illustrate the content of the present invention.

[0029] In the related art, temperature detection is realized by integrating a temperature sensor in a display panel to sense the temperature change of a light - emitting element in real time, and brightness compensation is performed according to the temperature monitoring result to optimize color deviation. However, this solution causes an increase in the product thickness, which is not conducive to the thin - type design of the product. Especially for a transparent display device, if both transparent display and brightness compensation and color - deviation optimization are to be ensured, it is difficult to implement this solution.

[0030] To solve this problem, an embodiment of the present invention provides a display panel, which includes a substrate, a plurality of light-emitting elements, and a temperature-sensitive capacitor. The substrate includes a first region; the light-emitting elements are located on one side of the substrate and in the first region; the temperature-sensitive capacitor is located in the first region; the temperature-sensitive capacitor includes a first capacitor plate, a second capacitor plate, and a dielectric layer located between the first capacitor plate and the second capacitor plate; the first capacitor plate is located on the side of the substrate close to the light-emitting elements; the second capacitor plate is located on the side of the first capacitor plate away from the substrate.

[0031] By adopting the above solution, the real-time and accurate sensing of temperature can be achieved through the temperature-sensitive capacitor, and then brightness compensation can be performed according to the temperature monitoring result to optimize color deviation. Since the capacitor can be designed transparently, the present invention has great advantages in transparent display devices. In addition, the temperature-sensitive capacitor is composed of a capacitor plate and a dielectric layer, and its production can be compatible with the original structure of the display panel, which is beneficial to reducing the product thickness.

[0032] The above is the core idea of the present invention. Next, the technical solutions of the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Figure 1 is a top view structural schematic diagram of a display panel provided by an embodiment of the present invention, Figure 2 is along Figure 1 A cross-sectional structural schematic diagram of a display panel taken along BB' in Figure 1 and Figure 2 As shown in

[0034] Figure 2 Figure 2, the temperature-sensitive capacitor 30 is disposed near the light-emitting element to sense the temperature change of the light-emitting element. When the temperature rises, the dielectric layer 33 deforms, causing the distance between the first capacitor plate 31 and the second capacitor plate 32 to change, and the capacitance value of the temperature-sensitive capacitor changes. By collecting the capacitance value, the temperature value can be determined according to the pre-set mapping relationship between the capacitance value and the temperature value, and then the brightness of the light-emitting element can be compensated according to the temperature value to optimize the color deviation. The specific compensation principle will not be elaborated here.

[0035] It should be noted that the first capacitor plate 31 is located on the side of the substrate 10 close to the light-emitting element 20. Specifically, the first capacitor plate 31 can be located between the substrate 10 and the light-emitting element 20, or the first capacitor plate 31 can be located on the side of the light-emitting element 20 away from the substrate 10. Figure 2 Only the latter is taken as an example for illustration, and other embodiments will be described later.

[0036] Among them, the light-emitting element 20 can be a micro light-emitting diode (micro-LED). As Figure 1 shown, optionally, the display panel 100 includes at least two light-emitting elements 20 with different light-emitting colors. Figure 1 Taking the display panel 100 including a red light-emitting element R, a green light-emitting element G, and a blue light-emitting element B as an example for illustration. As described above, the light efficiency decay ratios of light-emitting elements with different light-emitting colors are different with temperature. Therefore, at the same temperature, the compensation values of light-emitting elements with different light-emitting colors are different. By performing corresponding brightness compensation on the light-emitting elements according to the temperature value, the color deviation can be optimized.

[0037] Among them, the first region Q1 at least includes the pixel region, that is, the region where the light-emitting element 20 is located. As Figure 1 shown, in some embodiments, the first region Q1 can include a pixel region and a through region Q11. The through region Q11 is a region where ambient light can penetrate the display panel. By setting the through region Q11, transparent display can be realized, that is, on the basis of the normal display function of the display panel, it does not affect the user's observation of the external environment through the display panel. Exemplarily, the application fields of the transparent display panel can include but are not limited to the vehicle-mounted field.

[0038] In this embodiment, both the light-emitting element 20 and the temperature-sensitive capacitor 30 are located in the first region Q1. Their positional relationship will be described in detail later and will not be elaborated here for the time being. As long as it is ensured that the temperature-sensitive capacitor 30 is close to the light-emitting element 20 and can sense its temperature. Exemplarily, taking the transparent display panel as an example, Figure 1 only the temperature-sensitive capacitor 30 located in the pixel region where the light-emitting element 20 is located is taken as an example for illustration. In other embodiments, the temperature-sensitive capacitor can also be located in the through region Q11. At this time, as long as it is ensured that the first capacitor plate 31, the second capacitor plate 32, and the dielectric layer 33 are light-transmissive.

[0039] When the first capacitor plate 31 and the second capacitor plate 32 need to have light transmissivity, optionally, the materials for making the first capacitor plate 31 and the second capacitor plate 32 include, but are not limited to, organic or inorganic transparent materials such as tin dioxide, zinc oxide, and indium tin oxide. In addition, the dielectric layer 33 is also a transparent material, which will be described in detail later.

[0040] In summary, in the embodiment of the present invention, by adding a temperature-sensitive capacitor in the display panel, the real-time and accurate sensing of temperature can be achieved through the temperature-sensitive capacitor, and then brightness compensation can be performed according to the temperature monitoring result to optimize color deviation. Since the capacitor can be designed transparently, the present invention has great advantages in transparent display devices. In addition, the temperature-sensitive capacitor is composed of a capacitor plate and a dielectric layer, and its manufacturing can be compatible with the original structure of the display panel, which is beneficial to reducing the product thickness.

[0041] Based on the above embodiments, continue to refer to Figure 2 , optionally, the display panel further includes a light-shielding layer 40 and a transparent encapsulation layer 50. The light-shielding layer 40 has an opening, and the light-emitting element 20 is located within the opening; the transparent encapsulation layer 50 is located on the side of the light-emitting element 20 and the light-shielding layer 40 away from the substrate 10; the dielectric layer 33 includes at least one of the light-shielding layer 40 and the transparent encapsulation layer 50.

[0042] Among them, the light-shielding layer 40 is usually made of a light-impermeable material to reduce light leakage, improve contrast, and improve display quality. Specifically, the light-shielding layer 40 specifically refers to the black matrix (BM, Black Matrix) commonly mentioned in the industry, and can be made of black optical glue, for example. Among them, the transparent encapsulation layer 50 is used to prevent harmful substances from invading, protect the internal structure of the display panel, and at the same time maintain a high transmittance to ensure the light output efficiency. Exemplarily, the transparent encapsulation layer can be made of transparent optical glue.

[0043] Both the light-shielding layer 40 and the transparent encapsulation layer 50 have the characteristic of being easily expanded by heat. At least one of the light-shielding layer 40 and the transparent encapsulation layer 50 can be selected as the dielectric layer of the temperature-sensitive capacitor 30. In this way, when the temperature rises, the dielectric layer expands, the distance between the first capacitor plate and the second capacitor plate increases, the capacitance value becomes smaller, and the temperature value can be determined by collecting the capacitance value, so as to realize brightness compensation and optimize color deviation. In addition, selecting at least one of the light-shielding layer 40 and the transparent encapsulation layer 50 as the dielectric layer of the temperature-sensitive capacitor 30 does not require an additional dielectric layer, which is beneficial to the thin design of the product.

[0044] It should be noted that if there are other insulating film layers near the light-emitting elements in the display panel that are deformed by heat, they can also be used as part of the dielectric layer of the temperature-sensitive capacitor, and the embodiments of the present invention do not limit this. In addition, it is not excluded that there are insulating film layers near the light-emitting elements in the display panel that are prone to shrinkage when heated. If so, such film layers can also be selected as part of the dielectric layer of the temperature-sensitive capacitor. Preferably, when the dielectric layer includes two or more insulating film layers, the heat deformation characteristics of each film layer are the same (both expand when heated, or both shrink when heated).

[0045] As a feasible implementation manner, referring to Figure 2 , optionally, the first capacitor plate 31 is located between the light-shielding layer 40 and the transparent encapsulation layer 50; the second capacitor plate 32 is located on the side of the transparent encapsulation layer 50 away from the substrate 10; the dielectric layer 33 includes the transparent encapsulation layer 50.

[0046] Specifically, in this embodiment, the transparent encapsulation layer 50 serves as the dielectric layer 33 of the temperature-sensitive capacitor. When the temperature rises, the transparent encapsulation layer 50 expands due to heat, and the capacitance becomes smaller. By collecting the capacitance value, the temperature value can be determined to achieve brightness compensation and optimize color deviation.

[0047] As Figure 2 shown, optionally, the upper surface of the light-shielding layer 40 is substantially flush with the upper surface of the light-emitting element 20. In this way, the first capacitor plate 31 can be fabricated on a relatively flat film layer, which is beneficial to reducing the fabrication difficulty of the first capacitor plate 31.

[0048] In addition, Figure 3 is a schematic cross-sectional structure diagram of another display panel intercepted along Figure 1 BB' in Figure 3 shown. In other embodiments, the first capacitor plate 31 may only overlap with the light-shielding layer 40 in the projection along the direction perpendicular to the substrate 10, and the first capacitor plate 31 has an opening exposing the light-emitting element. At this time, the upper surface of the light-shielding layer 40 may be flush with the upper surface of the light-emitting element 20, or may not be flush with the upper surface of the light-emitting element 20. Figure 3 Only the case where the upper surface of the light-shielding layer 40 is lower than the upper surface of the light-emitting element 20 is taken as an example for illustration.

[0049] Figure 4 is a schematic cross-sectional structure diagram of another display panel intercepted along Figure 1 BB' in Figure 4 shown. As another feasible implementation manner, optionally, the first capacitor plate 31 is located on the side of the light-shielding layer 40 close to the substrate 10; the second capacitor plate 32 is located between the light-shielding layer 40 and the transparent encapsulation layer 50; the dielectric layer 33 includes the light-shielding layer 40.

[0050] Specifically, in this embodiment, the light-shielding layer 40 serves as the dielectric layer 33 of the temperature-sensitive capacitor. When the temperature rises, the light-shielding layer 40 expands due to heat, the capacitance becomes smaller, and the temperature value can be determined by collecting the capacitance value, so as to achieve brightness compensation and optimize color deviation.

[0051] As Figure 4 shown, the upper surface of the optional light-shielding layer 40 is substantially flush with the upper surface of the light-emitting element 20. In this way, the second capacitor plate 32 can be fabricated on a relatively flat film layer, which is beneficial to reducing the fabrication difficulty of the second capacitor plate 32.

[0052] Figure 5 is a schematic cross-sectional structure diagram of another display panel taken along Figure 1 BB' in Figure 5 shown. As another feasible embodiment, optionally, the first capacitor plate 31 is located on the side of the light-shielding layer 40 close to the substrate 10; the second capacitor plate 32 is located on the side of the transparent encapsulation layer 50 far from the substrate 10; the dielectric layer 33 includes the light-shielding layer 40 and the transparent encapsulation layer 50.

[0053] Specifically, in this embodiment, the light-shielding layer 40 and the transparent encapsulation layer 50 together serve as the dielectric layer 33 of the temperature-sensitive capacitor. Since both of them have the property of expanding due to heat, when the temperature rises, the dielectric layer 33 expands due to heat, the capacitance becomes smaller, and the temperature value can be determined by collecting the capacitance value, so as to achieve brightness compensation and optimize color deviation.

[0054] Furthermore, referring to Figure 4 or Figure 5 , when the first capacitor plate 31 is located on the side of the light-shielding layer 40 close to the substrate 10, optionally, the display panel further includes a circuit layer 60, and the circuit layer 60 is located between the substrate 10 and the film layer where the light-emitting element 20 is located; the circuit layer 60 includes a connection layer 61, and the connection layer 61 includes an anode pad 601 and a cathode pad 602. The anode pad 601 is used for electrically connecting with the anode 201 of the light-emitting element, and the cathode pad 602 is used for electrically connecting with the cathode 202 of the light-emitting element; the first capacitor plate 31 is arranged on the same layer as the connection layer 61 and is insulated from the anode pad 601 and the cathode pad 602.

[0055] In a micro light-emitting diode display panel, the micro light-emitting diodes are usually transferred to the array substrate by a mass transfer method. A pixel circuit is arranged in the array substrate, and the light-emitting element is electrically connected to the pixel circuit in the array substrate through a connection layer, so as to drive the light-emitting element to emit light through the pixel circuit. Exemplarily, referring to Figure 5 , the substrate 10 and the circuit layer 60 constitute the array substrate, and the pixel circuit can be an active driving circuit composed of xTyC (x thin film transistors and y capacitors), Figure 5Only one thin film transistor 603 is schematically shown. The anode 201 of the light-emitting element is electrically connected to the thin film transistor 603 through the anode pad 601, and the cathode 202 of the light-emitting element is electrically connected to the power line 604 through the cathode pad 602 to receive the cathode voltage.

[0056] The connection layer 61 where the anode pad 601 and the cathode pad 602 are located is the film layer closest to the light-emitting element in the array substrate. When the first capacitor plate 31 is located on the side of the light-shielding layer 40 close to the substrate 10, in this embodiment, the first capacitor plate 31 is arranged on the same layer as the connection layer 61 and is insulated from the anode pad 601 and the cathode pad 602, which can not only ensure the reliability of the temperature sensing result but also avoid adding additional film layers, facilitating the thin design of the product.

[0057] Refer to Figure 5 , optionally, the display panel further includes a transparent adhesive 70 and a cover plate 80 located on the side of the transparent encapsulation layer 50 away from the substrate 10. The cover plate 80 is adhered to the underlying film layer ( Figure 5 specifically the second capacitor plate 32 in

[0058] In summary, the above embodiments have described in detail the film layer positions of the first capacitor plate 31, the second capacitor plate 32, and the dielectric layer 33 in the direction perpendicular to the substrate. Next, the dimension and position design of the first capacitor plate 31 and the second capacitor plate 32 in the direction parallel to the substrate will be described in detail.

[0059] Regarding the dimensions of the first capacitor plate 31 and the second capacitor plate 32, as a feasible implementation, in combination with Figure 1 and Figure 2 , optionally, the projection range of the second capacitor plate 32 on the substrate 10 is equal to the projection range of the first capacitor plate 31 on the substrate 10.

[0060] Specifically, the projection range of the second capacitor plate 32 on the substrate 10 being equal to the projection range of the first capacitor plate 31 on the substrate 10 can be specifically understood as the projection edges of the second capacitor plate 32 on the substrate coinciding with the projection edges of the first capacitor plate 31 on the substrate. Of course, due to the influence of process accuracy, there may be a slight deviation between the projection ranges of the two.

[0061] The deformation degree of the dielectric layer at different positions may be different. In this embodiment, by setting the projection range of the second capacitor plate 32 on the substrate 10 to be equal to the projection range of the first capacitor plate 31 on the substrate 10, the first capacitor plate 31 and the second capacitor plate 32 can be in contact with the dielectric layer 33 at the same position, which is beneficial to improving the accuracy of temperature sensing and reducing errors.

[0062] Further, referring to Figure 1 and Figure 2 , taking the transparent display panel as an example, the first region Q1 includes a pixel region and a transmissive region Q11, and the light-emitting element 20 is located in the pixel region. At this time, regarding the setting position of the temperature-sensitive capacitor, optionally, the orthographic projection of the first capacitor plate 31 on the substrate 10 overlaps with the pixel region (i.e., the region where the light-emitting element is located), and / or the orthographic projection of the first capacitor plate 31 on the substrate 10 overlaps with the transmissive region Q11. It can be understood that when the display panel is a non-transparent display panel, that is, the first region Q1 only includes the pixel region, the orthographic projection of the first capacitor plate 31 on the substrate 10 overlaps with the pixel region.

[0063] Specifically, referring to Figure 1 and Figure 2 , in this embodiment, since the projection ranges of the first capacitor plate 31 and the second capacitor plate 32 are the same, therefore, the position of the second capacitor plate 32 is the same as that of its corresponding first capacitor plate 32, and the position of the temperature-sensitive capacitor 30 is the same as that of the first capacitor plate 31.

[0064] Exemplarily, Figure 1 and Figure 2 show the situation where the orthographic projection of the first capacitor plate 31 on the substrate 10 overlaps with the pixel region (i.e., the region where the light-emitting element 20 is located). At this time, the temperature-sensitive capacitor is arranged in the pixel region and does not cover the transparent region, so that the influence on the light transmittance of the transmissive region can be reduced to a certain extent, ensuring a relatively good light transmittance of the transmissive region.

[0065] Exemplarily, Figure 6 is a top view structural schematic diagram of another display panel provided by an embodiment of the present invention, Figure 7 is a cross-sectional structural schematic diagram of a display panel taken along Figure 6 DD' in Figure 6 and Figure 7 show the situation where the orthographic projection of the first capacitor plate 31 on the substrate 10 overlaps with the transmissive region Q11. At this time, the temperature-sensitive capacitor is arranged in the transmissive region, and the temperature of the light-emitting element nearby can be sensed. Since the temperature-sensitive capacitor does not cover the light-emitting element, the influence on the display brightness can be reduced to a certain extent, ensuring a relatively good display brightness.

[0066] Exemplarily, Figure 8 is a top view structural schematic diagram of another display panel provided by an embodiment of the present invention, Figure 9 is a cross-sectional structural schematic diagram of a display panel taken along Figure 8 EE' in Figure 8 and Figure 9It shows the situation where the orthographic projection of the first capacitive electrode plate 31 on the substrate 10 overlaps with the pixel region (i.e., the region where the light-emitting elements are located) and the through region Q11 at the same time. With such a design, it is beneficial to improve the layout uniformity of the temperature-sensitive capacitor and improve the visual effect.

[0067] It should be noted that Figure 7 and Figure 9 Only the case where the first capacitive electrode plate 31 of the temperature-sensitive capacitor is located on the side of the light-shielding layer 40 close to the substrate 10 and the second capacitive electrode plate 32 is located between the light-shielding layer 40 and the transparent encapsulation layer 50 is taken as an example for illustration. At this time, the dielectric layer 33 includes the light-shielding layer 40. Referring to Figure 7 , the light-shielding layer 40 has an opening corresponding to the through region Q11, and the opening is filled with a transparent layer 90 to ensure the light transmittance of the through region Q11. In one embodiment, it is optional that the transparent layer 90 also has the characteristic of being easily expandable when heated. For example, it can be made of the same material as the transparent encapsulation layer 50. At this time, the dielectric layer also includes the transparent layer 90. The setting methods of other film layers of the first capacitive electrode plate 31 and the second capacitive electrode plate 32 can refer to the above description and will not be elaborated here.

[0068] It should also be noted that Figure 1 Only the orthographic projections of the first capacitive electrode plates and the second capacitive electrode plates 32 of each temperature-sensitive capacitor on the substrate only overlap with the pixel region, Figure 6 Only the orthographic projections of the first capacitive electrode plates and the second capacitive electrode plates 32 of each temperature-sensitive capacitor on the substrate only overlap with the transparent region Q11, Figure 8 Only the case where the orthographic projections of the first capacitive electrode plates and the second capacitive electrode plates 32 of each temperature-sensitive capacitor on the substrate overlap with the pixel region and the through region Q11 at the same time is taken as an example for illustration. In other embodiments, it can be designed that the orthographic projections of the first capacitive electrode plates and the second capacitive electrode plates 32 of some temperature-sensitive capacitors on the substrate overlap with the pixel region, the orthographic projections of the first capacitive electrode plates and the second capacitive electrode plates 32 of some temperature-sensitive capacitors on the substrate overlap with the transparent region Q11, and the orthographic projections of the first capacitive electrode plates and the second capacitive electrode plates 32 of some temperature-sensitive capacitors on the substrate overlap with the pixel region and the through region Q11 at the same time. The embodiments of the present invention do not limit this.

[0069] Regarding the sizes of the first capacitive electrode plate 31 and the second capacitive electrode plate 32, as another feasible embodiment, referring to Figure 10 and Figure 11 , Figure 10 is a schematic structural diagram of another display panel provided by the embodiments of the present invention, Figure 11 is along Figure 10Schematic structural diagram of a display panel intercepted by PP'. Optionally, one of the first capacitor plate 31 and the second capacitor plate 32 is the first plate 301, and the other is the second plate 302; the projection range of the second plate 302 on the substrate 10 is larger than the projection range of the first plate 301 on the substrate 10, and one second plate 302 is correspondingly arranged with n first plates 301. The n first plates 301 respectively belong to n different temperature-sensitive capacitors 30, and the n temperature-sensitive capacitors 30 share one second plate 302; n≥2.

[0070] Specifically, in this embodiment, the sizes of the first capacitor plate 31 and the second capacitor plate 32 are not equal. The one with the smaller size is denoted as the first plate 301, and the one with the larger size is denoted as the second plate 302. At this time, the number of the first plates 301 is the same as the number of the temperature-sensitive capacitors. The position of the temperature-sensitive capacitor 30 is determined by the position of the first plate 301. There are at least two temperature-sensitive capacitors 301 sharing one second plate 302. With such a setting, the number of the second plates 302 can be reduced, which is beneficial to reducing the number of traces for transmitting the induction signals of the temperature-sensitive capacitors and is beneficial to reducing the manufacturing difficulty. Exemplarily, the traces for transmitting the induction signals can be arranged in the circuit layer as long as there is no conflict with the original circuit structure.

[0071] Among them, one second plate 302 is correspondingly arranged with n first plates 301. Specifically, it can be understood that the positive projection of one second plate 302 on the substrate 10 overlaps with the positive projections of n first plates 301 on the substrate 10 at the same time. Exemplarily, Figure 10 and Figure 11 Taking n = 2, that is, one second plate 302 is correspondingly arranged with two first plates 301 as an example for illustration.

[0072] It should be noted that, Figure 11 only taking the first capacitor plate 31 as the first plate 301 and the second capacitor plate 32 as the second plate 302 as an example for illustration. In other embodiments, it can also be set that the first capacitor plate 31 is the second plate 302 and the second capacitor plate 32 is the first plate 301. The embodiments of the present invention do not limit this. Combining the above description of the film layer position, it is easy to understand that since the film layer position of the second capacitor plate 32 is more upward and there are fewer limiting factors, therefore, selecting the second capacitor plate 32 as the second plate 302 with a larger size is beneficial to reducing the manufacturing difficulty.

[0073] Figure 12 is a top view structural diagram of another display panel provided by the embodiment of the present invention. As Figure 12 shown, optionally, the projection range of the second plate 302 on the substrate 10 covers the first area Q1. With such a setting, all the temperature-sensitive capacitors 30 can share one second plate 302, and the manufacturing difficulty can be significantly reduced.

[0074] Further, when the first capacitor plates 31 and the second capacitor plates 32 are not arranged in one-to-one correspondence, the setting position of the temperature-sensitive capacitor is determined by the position of the first plates 301 with smaller dimensions. When the display panel is a transparent display panel, for the first plates 301 with smaller dimensions, it is optional that the orthographic projection of the first plates 301 on the substrate 10 overlaps with the pixel region (i.e., the region where the light-emitting elements are located), and / or the orthographic projection of the first plates 301 on the substrate 10 overlaps with the transmissive region Q11. Additionally, when the display panel is a non-transparent display panel, that is, the first region Q1 only includes the pixel region, the orthographic projection of the first plates 301 on the substrate 10 overlaps with the pixel region. As for the setting position of the second plates 302 with larger dimensions, as long as it is ensured that the projection range of the second plates 302 overlaps with the projections of the corresponding n first plates.

[0075] Exemplarily, referring to Figure 10 and Figure 11 , taking the first capacitor plate 31 as the first plate 301 as an example, optionally, the orthographic projection of the first capacitor plate 31 on the substrate 10 overlaps with the pixel region (i.e., the region where the light-emitting elements are located). In other embodiments, it is also possible to set the orthographic projection of the first capacitor plate 31 on the substrate 10 to overlap with the transmissive region Q11, or it is also possible to set the orthographic projection of the first capacitor plate 31 on the substrate 10 to overlap with both the pixel region and the transmissive region at the same time. The embodiments of the present invention do not limit this.

[0076] Continuing to refer to Figure 10 and Figure 11 , optionally, the first region Q1 includes the pixel region (i.e., the region where the light-emitting elements 20 are located), the pixel region includes a plurality of pixel units 2, and one temperature-sensitive capacitor 30 is arranged corresponding to at least one pixel unit 2.

[0077] Wherein, one pixel unit specifically refers to a pixel point in the display panel. In color displays, one pixel point is composed of at least two sub-pixels / sub-pixels. Exemplarily, referring to Figure 10 , in this embodiment, one red sub-pixel (R), one green sub-pixel (G), and one blue sub-pixel (B) constitute one pixel unit 2. Since the arrangement patterns of the sub-pixels in the display panel are diverse, the compositions of the pixel units are also diverse. The examples shown in the drawings of the present invention are only examples and not limitations.

[0078] Among them, a temperature-sensitive capacitor 30 is correspondingly arranged with at least one pixel unit 2. Specifically, it can be understood that one temperature-sensitive capacitor 30 is at least used to sense the temperature at the position where one pixel unit 2 is located. As for the relative positions of the temperature-sensitive capacitor 30 and its corresponding pixel unit 2, there is no limitation. Specifically, referring to the above description, the temperature-sensitive capacitor 30 can be arranged in the pixel region and overlap with the projection of its corresponding pixel unit. In addition, it can also be arranged in the through region adjacent to its corresponding pixel unit. The embodiments of the present invention do not limit this.

[0079] By setting the temperature-sensitive capacitor 30 to correspond to the pixel unit 2 one by one, pixel-level temperature sensing can be realized, the sensing accuracy can be improved, and then the compensation accuracy can be improved, and the color deviation can be better optimized. In addition, the temperature difference between adjacent pixel units may be small. By setting the temperature-sensitive capacitor 30 to correspond to at least two pixel units 2, a larger area can be temperature-sensed by one temperature-sensitive capacitor 30. While realizing brightness compensation, the number of temperature-sensitive capacitors can be reduced, and then the number of temperature-sensing signal lines can be reduced, which can reduce the manufacturing difficulty and improve the data processing efficiency and response speed.

[0080] Exemplarily, referring to Figure 10 and Figure 11 , when the second capacitor plate 32 and the first capacitor plate 31 are not arranged in one-to-one correspondence, the position of the temperature-sensitive capacitor 30 is determined by the smaller one of them. Figure 11 In, the size of the first capacitor plate 31 is small, and one first capacitor plate 31 corresponds to one pixel unit 2. Therefore, one temperature-sensitive capacitor 30 corresponds to one pixel unit 2, and pixel-level temperature sensing can be realized. In other embodiments, when the second capacitor plate 32 and the first capacitor plate 31 are not arranged in one-to-one correspondence, the smaller first plate (such as the first capacitor plate 31) can correspond to a larger number of pixel units 2. The embodiments of the present invention do not limit this.

[0081] Exemplarily, referring to Figure 1 and Figure 2 , the first capacitor plate 31 and the second capacitor plate 32 are arranged in one-to-one correspondence, and one first capacitor plate 31 corresponds to one pixel unit 2. Therefore, pixel-level temperature sensing can also be realized. In other embodiments, when the second capacitor plate 32 and the first capacitor plate 31 are arranged in one-to-one correspondence, the first capacitor plate 31 and the second capacitor plate 32 can correspond to a larger number of pixel units 2. The embodiments of the present invention do not limit this.

[0082] Figure 13 is a schematic top view structure diagram of another display panel provided by the embodiments of the present invention. As Figure 13As shown, optionally, the temperature-sensitive capacitor 30 includes a first temperature-sensitive capacitor 30a and a second temperature-sensitive capacitor 30b. The first temperature-sensitive capacitor 30a is correspondingly arranged with i pixel units 2, and the second temperature-sensitive capacitor 30b is correspondingly arranged with j pixel units 2, where i≠j.

[0083] According to actual display requirements, in the display panel, the heat generation conditions in different regions may be different. Therefore, in different regions, one temperature-sensitive capacitor can correspond to different numbers of pixel units. For example, more temperature-sensitive capacitors can be set in the region with more heat generation, and each temperature-sensitive capacitor corresponds to a small number of pixel units to ensure the accuracy of temperature sensing and brightness compensation. Fewer temperature-sensitive capacitors can be set in the region with less heat generation, and each temperature-sensitive capacitor corresponds to a larger number of pixel units to reduce the manufacturing difficulty.

[0084] Exemplarily, Figure 13 Taking the first temperature-sensitive capacitor 30a located in the edge region, each first temperature-sensitive capacitor 30a corresponding to four (i = 4) pixel units 2, and the second temperature-sensitive capacitor 30b located in the central region, each second temperature-sensitive capacitor 30b corresponding to one (j = 1) pixel unit 2 as an example for illustration, it is applicable to the situation where the central region generates more heat and the edge region generates less heat.

[0085] In other embodiments, more temperature-sensitive capacitors can also be set for the region with a faster change frequency / larger change amplitude of brightness, so that each temperature-sensitive capacitor corresponds to a small number of pixel units to improve the accuracy of temperature sensing and brightness compensation. Fewer temperature-sensitive capacitors can be set for the region with a faster change frequency / larger change amplitude of brightness, so that each temperature-sensitive capacitor corresponds to a small number of pixel units to reduce the manufacturing difficulty.

[0086] As for the setting manner of the first capacitor plate and the second capacitor plate in the temperature-sensitive capacitor, including the film layer position and the projection position, etc., it can refer to the above description and will not be elaborated here.

[0087] Based on the same inventive concept, the embodiments of the present invention also provide a display device. Exemplarily, Figure 14 is a schematic structural diagram of a display device provided by an embodiment of the present invention. As Figure 14 shown, the display device 200 includes the display panel 100 provided in any of the above embodiments, and thus has the same beneficial effects as the above display panel. The same parts can refer to the description of the above embodiments and will not be elaborated here. The display device 200 can be a micro-LED display device. In addition, the display device 200 provided by the embodiments of the present invention can be Figure 14The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiments of the present invention do not make special limitations on this.

[0088] The above specific implementation manners do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display panel, characterized in that: include: A substrate; the substrate comprising a first region; A plurality of light emitting elements are located on one side of the substrate and in the first area; A temperature-sensing capacitor is located in the first area; the temperature-sensing capacitor includes a first capacitor plate, a second capacitor plate, and a dielectric layer between the first capacitor plate and the second capacitor plate; the first capacitor plate is located on a side of the substrate close to the light-emitting element; and the second capacitor plate is located on a side of the first capacitor plate away from the substrate.

2. The display panel according to claim 1, characterized in that: The projection range of the second capacitor plate on the substrate is equal to the projection range of the first capacitor plate on the substrate.

3. The display panel according to claim 1, characterized in that: One of the first capacitor plate and the second capacitor plate is a first plate, and the other is a second plate; The projection range of the second electrode plate on the substrate is larger than the projection range of the first electrode plate on the substrate, one second electrode plate is arranged corresponding to n first electrode plates, the n first electrode plates belong to n different temperature-sensitive capacitors respectively, and the n temperature-sensitive capacitors share one second electrode plate; n≥2.

4. The display panel according to claim 3, characterized in that: The projection range of the second electrode plate on the substrate covers the first area.

5. The display panel according to claim 2 or 3, characterized in that: The first region includes a pixel region and a transmission region; the light emitting element is located in the pixel region; The first capacitor plate is a first plate; the orthographic projection of the first capacitor plate on the substrate overlaps with the pixel area, and / or the orthographic projection of the first capacitor plate on the substrate overlaps with the transmission area.

6. The display panel according to claim 1, characterized in that: The first region includes a pixel area, the pixel area includes a plurality of pixel units, and one temperature-sensitive capacitor is arranged corresponding to at least one of the pixel units.

7. The display panel according to claim 6, characterized in that: The temperature-sensitive capacitor includes a first temperature-sensitive capacitor and a second temperature-sensitive capacitor, the first temperature-sensitive capacitor is arranged corresponding to i pixel units, and the second temperature-sensitive capacitor is arranged corresponding to j pixel units, wherein i≠j.

8. The display panel according to claim 1, characterized in that: The display panel further includes: A light shielding layer; the light shielding layer has an opening, and the light emitting element is located in the opening; A transparent encapsulation layer, located on a side of the light emitting element and the light shielding layer away from the substrate; The dielectric layer includes at least one of the light shielding layer and the transparent encapsulation layer.

9. The display panel according to claim 8, characterized in that: The first capacitor plate is located between the light shielding layer and the transparent encapsulation layer; The second capacitor plate is located on a side of the transparent encapsulation layer away from the substrate; The dielectric layer includes the transparent encapsulation layer.

10. The display panel according to claim 8, characterized in that: The first capacitor plate is located on a side of the light shielding layer close to the substrate; The second capacitor plate is located between the light shielding layer and the transparent encapsulation layer; The dielectric layer includes the light shielding layer.

11. The display panel according to claim 8, characterized in that: The first capacitor plate is located on a side of the light shielding layer close to the substrate; The second capacitor plate is located on a side of the transparent encapsulation layer away from the substrate; The dielectric layer includes the light shielding layer and the transparent encapsulation layer.

12. The display panel according to claim 10 or 11, characterized in that: The display panel further comprises a circuit layer, wherein the circuit layer is located between the substrate and the film layer where the light-emitting element is located; The circuit layer includes a connection layer, and the connection layer includes an anode pad and a cathode pad, wherein the anode pad is used to be electrically connected to the anode of the light-emitting element, and the cathode pad is used to be electrically connected to the cathode of the light-emitting element; The first capacitor plate is arranged on the same layer as the connection layer and is insulated from the anode pad and the cathode pad.

13. A display device, characterized in that: A display panel comprising any one of claims 1 to 12.

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