Display panel and display system

Abstract

The invention provides a display panel and a display system, and relates to the technical field of display, and the display panel comprises a substrate, and a light emitting body, a first conductive layer, a second conductive layer, a first outer leading piece and a second outer leading piece which are arranged on the substrate; the first conductive layer and the second conductive layer are made of different materials; the first conductive layer and the second conductive layer form a first contact part and are in thermal conduction with the luminous body at the first contact part; one end of the first outer leading piece is electrically connected with the first conductive layer, one end of the second outer leading piece is electrically connected with the second conductive layer, and the two electric connection positions and the first contact position are arranged at intervals. The display system comprises a voltage detection part, a power supply part, a control part and a display panel. According to the display panel and the display system provided by the invention, the accuracy of a temperature detection result can be ensured, and the operation difficulty during detection can be relatively low.

Description

Technical Field

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

[0002] With the rapid development of LED (Light-Emitting Diode) display technology, LED display panels have high pixel count and high brightness, which leads to the rapid heating of the display panels. As the temperature rises, the display panels may malfunction, such as reduced brightness.

[0003] In existing technologies, infrared sensors are typically used to detect the temperature of the light-emitting element on the display panel, and temperature compensation is performed based on the detection results to solve the problem of reduced brightness.

[0004] However, the accuracy of existing detection methods is difficult to guarantee, and the operation is quite difficult. Summary of the Invention

[0005] In view of the above problems, this application provides a display panel and display system that can ensure the accuracy of temperature detection results and reduce the difficulty of operation during detection.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A first aspect of this application provides a display panel, including a substrate, and a light-emitting element, a first conductive layer, a second conductive layer, a first external lead, and a second external lead disposed on the substrate; the first conductive layer and the second conductive layer are made of different materials; the first conductive layer and the second conductive layer form a first contact point and are thermally connected to the light-emitting element at the first contact point; one end of the first external lead is electrically connected to the first conductive layer, and one end of the second external lead is electrically connected to the second conductive layer, and the two electrical connections are spaced apart from the first contact point.

[0008] The beneficial effects of this application are as follows: the first conductive layer and the second conductive layer together form a thermocouple structure. Due to the existence of the thermoelectric effect, when the heat of the light-emitting body is transferred to the hot end, the voltage can be detected in the thermocouple structure by using a voltage detection device electrically connected to the first conductive layer and the second conductive layer. The voltage value can be used to determine the temperature at the light-emitting body. Therefore, the display panel provided by this application can ensure the accuracy of the detection results and make the operation during detection easier because it has a thermocouple structure inside for detecting the temperature of the light-emitting body.

[0009] In one possible implementation, along the thickness direction of the substrate, a first conductive layer is disposed between the substrate and a second conductive layer, and a first through-hole is provided on the second conductive layer;

[0010] One end of the first external lead is inserted into the first through hole and electrically connected to the first conductive layer. The first external lead located in the first through hole is insulated from the second conductive layer.

[0011] Thus, the presence of the first through hole facilitates the formation of an electrical connection between the first external lead and the first conductive layer.

[0012] In one possible implementation, the display panel further includes a first insulating layer disposed between a first conductive layer and a second conductive layer;

[0013] The first insulating layer has a second through hole, which is connected to the first through hole; one end of the first external lead is inserted into the first and second through holes and connected to the second conductive layer.

[0014] In this way, the first insulating layer can isolate the first conductive layer and the second conductive layer.

[0015] In one possible implementation, the second via is disposed adjacent to the first via along the thickness direction of the substrate, and the first conductive layer and the second conductive layer are disposed at a distance from each other at the second via.

[0016] This facilitates the processing and formation of the first and second conductive layers.

[0017] In one possible implementation, the electrical connection between the first external lead and the first conductive layer, and the electrical connection between the second external lead and the second conductive layer, are both located near the second through hole.

[0018] In one possible implementation, the second via and the first via partially overlap, with a portion of the second conductive layer located in the second via; the second conductive layer located in the second via abuts against the first conductive layer, forming a second contact.

[0019] In this way, a closed loop can be formed between the first contact point and the second contact point. The thermoelectric potential formed in this closed loop is more stable, making it easier for the voltage detection device to detect the voltage.

[0020] In one possible implementation, the electrical connection between the first external lead and the first conductive layer, and the electrical connection between the second external lead and the second conductive layer, are both located close to the second contact point.

[0021] In one possible implementation, the two electrical connections are close to each other.

[0022] In one possible implementation, the display panel further includes a second insulating layer that covers the side of the second conductive layer away from the substrate; a portion of the second insulating layer is located in the first through-hole, and the second insulating layer located in the first through-hole fills between the first external lead and the second conductive layer.

[0023] In this way, the second insulating layer not only provides protection and isolation, but also facilitates the insulation between the first external lead in the first through hole and the second conductive layer.

[0024] In one possible implementation, the display panel further includes a thermally conductive layer, at least partially filled between the electrodes of the light-emitting element and the first contact; the first conductive layer and the second conductive layer located at the first contact are thermally connected to the electrodes of the light-emitting element through the thermally conductive layer.

[0025] In this way, the electrodes of the light-emitting body generate heat during operation, and the heat can be transferred to the first contact point through the heat-conducting component; the first conductive layer and the second conductive layer can be indirectly thermally connected to the light-emitting body.

[0026] In one possible implementation, at least one of the first conductive layer and the second conductive layer located at the first contact point abuts against the electrode of the light-emitting body.

[0027] In this way, the electrodes of the light-emitting body generate heat during operation, and the heat can be directly transferred to the first contact point, allowing the first conductive layer and the second conductive layer to be directly thermally connected to the light-emitting body.

[0028] In one possible implementation, an electrode layer is provided on the substrate; a first conductive layer and a second conductive layer located at the first contact are connected to form a pad portion; the pad portion is disposed between the light-emitting body and the electrode layer, and the electrode of the light-emitting body is electrically connected to the electrode layer through the pad portion.

[0029] In this way, the pad portion can act as a hot end in the thermocouple structure, and at the same time, it facilitates the connection of the light-emitting element to the substrate, and facilitates the electrical connection between the electrode of the light-emitting element and the electrode layer.

[0030] In one possible implementation, the materials of the first conductive layer and the second conductive layer are combined in one of the following ways: NiCr / NiSi, NiSi / NiCr, NiCr / CuNi, CuNi / NiCr, Fe / CuNi, and CuNi / Fe; and / or, the materials of the first external lead and the second external lead are the same.

[0031] This makes it easier to accurately and efficiently detect the temperature at the light source.

[0032] A second aspect of this application provides a display system, including a voltage detection element, a power supply element, a control element, and a display panel in any of the above implementations;

[0033] The control components are electrically connected to the voltage detection components and the power supply components;

[0034] One end of the first external lead and one end of the second external lead in the display panel are electrically connected to the voltage detection component, and the power supply component is electrically connected to the display panel.

[0035] The display panel provided in this application features a thermocouple structure inside for detecting the temperature of the light-emitting element. This facilitates real-time detection and monitoring of the temperature at any point on the light-emitting element, offering a more direct approach compared to other temperature measurement methods and ensuring accurate results. Compared to existing temperature measurement methods, this application eliminates the need for additional sensors, reducing operational complexity. Furthermore, the first and second conductive layers are built-in functional layers within the display panel, eliminating the need for additional costs. The thermocouple structure formed by the first and second conductive layers is sufficient to detect the temperature of the light-emitting element. Additionally, the display system provided in this application can perform real-time temperature compensation for the light-emitting element based on the temperature detection results, thereby enhancing its brightness and ensuring normal display functionality.

[0036] The structure of this application, as well as its other inventive objectives and beneficial effects, will become more apparent and understandable through a description of the specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A structural diagram of the display system provided in the embodiments of this application;

[0039] Figure 2 This is a first structural diagram of a display panel provided in an embodiment of this application;

[0040] Figure 3 This is a second structural diagram of the display panel provided in an embodiment of this application;

[0041] Figure 4 This is a third structural diagram of the display panel provided in the embodiments of this application;

[0042] Figure 5 This is a fourth structural diagram of the display panel provided in the embodiments of this application;

[0043] Figure 6 This is a fifth structural diagram of the display panel provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100 - Display panel; 110 - Substrate;

[0046] 111 - Electrode layer; 111A - Anode layer;

[0047] 111B - Cathode layer; 112 - TFT layer;

[0048] 113 - Substrate layer; 114 - Isolation layer;

[0049] 115 - Conductive post; 116 - Isolator;

[0050] 120 - Light source; 121 - Electrode;

[0051] 130 - First conductive layer; 140 - Second conductive layer;

[0052] 141 - First through hole; 150 - First external lead;

[0053] 160 - Second external lead; 170 - First insulating layer;

[0054] 171 - Second through hole; 180 - Second insulating layer;

[0055] 191 - First point of contact; 192 - Second point of contact;

[0056] 193 - Solder pad area; 194 - Thermal conductive layer;

[0057] 200 - Voltage detection element; 300 - Power supply element;

[0058] 400 - Control components. Detailed Implementation

[0059] In existing technologies, infrared sensors are typically installed outside the display panel to detect the temperature of the light-emitting element. When the temperature exceeds a set value, appropriate measures are taken to compensate for the temperature, thereby ensuring the brightness and image quality of the display panel and preventing thermal ghosting. However, the accuracy of the detection results in existing technologies is difficult to guarantee, and additional sensors are required, making the detection process quite complex.

[0060] To address the aforementioned issues, this application provides a display panel comprising a substrate, and a light-emitting element, a first conductive layer, a second conductive layer, a first external lead, and a second external lead disposed on the substrate. The first and second conductive layers are made of different materials and form a first contact point, where they are thermally connected to the light-emitting element. The first and second conductive layers together form a thermocouple structure, with the first contact point being the hot end of the thermocouple structure. A voltage detection element is electrically connected to the cold end of the thermocouple structure. Due to the thermoelectric effect, when heat from the light-emitting element is transferred to the hot end, a voltage can be detected in the thermocouple structure using the voltage detection element. The temperature at the light-emitting element is determined by the voltage value; a higher voltage value indicates a higher temperature at the light-emitting element. Therefore, the display panel provided in this application, due to the internal thermocouple structure for detecting the temperature of the light-emitting element, ensures the accuracy of the detection results and reduces the operational difficulty during detection.

[0061] In addition, this application also provides a display system, including a voltage detection device, a power supply device, a control device, and a display panel; the voltage detection device can be used to detect the voltage in the thermocouple structure in the display panel, and the power supply device can provide current for the display of the display panel; thereby, the control device can control the output current of the power supply device according to the voltage value, and by increasing the output current, the luminous brightness of the light-emitting element can be increased, thereby increasing the brightness of the display panel and ensuring the normal display of the display panel.

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0063] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0064] The following combination Figures 1 to 6 The structure of the display panel provided in the embodiments of this application will be described in detail.

[0065] like Figures 1 to 3As shown, the display panel 100 provided in this application includes a substrate 110, and a light-emitting element 120, a first conductive layer 130, a second conductive layer 140, a first external lead 150, and a second external lead 160 disposed on the substrate 110. It should be noted that the substrate 110 can be used to provide support, and an electrode layer 111 may be provided on the substrate 110. The light-emitting element 120 can be an LED light-emitting element 120, and the electrode 121 on the light-emitting element 120 can be electrically connected to the electrode layer 111 on the substrate 110, thereby the substrate 110 can drive the light-emitting element 120 to emit light.

[0066] like Figure 2 and Figure 3 As shown, the first conductive layer 130 and the second conductive layer 140 are made of different materials, and the first conductive layer 130 and the second conductive layer 140 form a first contact 191, which is thermally connected to the light-emitting body 120. Thus, when the light-emitting body 120 generates heat during operation, the heat of the light-emitting body 120 is conducted to the first contact 191, and both the first conductive layer 130 and the second conductive layer 140 located at the first contact 191 can be heated.

[0067] In addition, such as Figure 1 As shown, one end of the first external lead 150 is electrically connected to the first conductive layer 130, and one end of the second external lead 160 is electrically connected to the second conductive layer 140. The two electrical connections are spaced apart from the first contact point 191. It should be noted that the other ends of the first external lead 150 and the second external lead 160 can be electrically connected to the same voltage detection element 200. The first external lead 150 and the second external lead 160 can function as wires, thus connecting the first conductive layer 130 to the voltage detection element 200 via the first external lead 150, and the second conductive layer 140 to the same voltage detection element 200 via the second external lead 160. Furthermore, the first conductive layer 130 and the second conductive layer 140 are also connected at the first contact point 191. Therefore, the first conductive layer 130, the first external lead 150, the voltage detection element 200, the second external lead 160, and the second conductive layer 140 are sequentially connected to form a closed loop.

[0068] Thus, the first conductive layer 130 and the second conductive layer 140 together form a thermocouple structure. The first contact 191 is the hot end of the thermocouple structure, which can be heated by the heat of the light-emitting body 120 and thus rise in temperature. The electrical connection between the first conductive layer 130 and the first external lead 150, and the electrical connection between the second conductive layer 140 and the second external lead 160, are the two cold ends of the thermocouple structure. The voltage detection element 200 is electrically connected to the two cold ends. Due to the thermoelectric effect, a thermoelectric potential can be generated when there is a temperature difference between the hot and cold ends. At this time, the voltage detection element 200 can detect the voltage. The larger the voltage value, the higher the temperature at the light-emitting body 120. The temperature at the light-emitting body 120 can be determined by the voltage value.

[0069] Therefore, in the display panel 100 provided by this application, since there is a thermocouple structure inside the display panel 100 for detecting the temperature of the light-emitting element 120, it is convenient to detect and monitor the temperature of any light-emitting element 120 in real time. Compared with other temperature measurement methods, this is more direct and can ensure the accuracy of the detection results. It is also convenient to directly compensate the temperature of the light-emitting element 120 based on the detection results to improve the brightness of the light-emitting element 120. In addition, compared with existing temperature measurement methods, this application does not require the installation of additional sensors, and the operation difficulty during detection is lower. Furthermore, the first conductive layer 130 and the second conductive layer 140 can be functional layers built into the display panel 100. Therefore, without increasing the cost, the thermocouple structure formed by the first conductive layer 130 and the second conductive layer 140 can detect the temperature of the light-emitting element 120.

[0070] It should be noted that, as Figure 1 and Figure 2 As shown, the substrate 110 includes a substrate layer 113, a TFT layer 112 (Thin Film Transistor Layer), an electrode layer 111, and an isolation layer 114 stacked sequentially. The electrode layer 111 can be made of metal materials such as Ti or Cu, and includes an anode layer 111A and a cathode layer 111B arranged at intervals, with an isolation member 116 between the anode layer 111A and the cathode layer 111B. The light emitter 120, the first conductive layer 130, the second conductive layer 140, the first external lead 150, and the second external lead 160 are located on the side of the isolation layer 114 away from the electrode layer 111. The two electrodes 121 of the light emitter 120 can be electrically connected to the anode layer 111A and the cathode layer 111B respectively through conductive posts 115.

[0071] In the embodiments of this application, such as Figure 2 and Figure 3As shown, along the thickness direction of the substrate 110, a first conductive layer 130 is disposed between the substrate 110 and a second conductive layer 140. A first through-hole 141 is provided on the second conductive layer 140. One end of a first external lead 150 passes through the first through-hole 141 and is electrically connected to the first conductive layer 130. Thus, the presence of the first through-hole 141 facilitates the electrical connection between one end of the first external lead 150 and the first conductive layer 130. Furthermore, the first external lead 150 located in the first through-hole 141 is insulated from the second conductive layer 140, ensuring that a direct electrical connection is not formed between the first external lead 150 and the second conductive layer 140, thereby not affecting the accuracy of the temperature detection results.

[0072] Furthermore, such as Figure 2 and Figure 3 As shown, the display panel 100 also includes a first insulating layer 170, which is disposed between the first conductive layer 130 and the second conductive layer 140. The presence of the first insulating layer 170 can isolate the first conductive layer 130 and the second conductive layer 140, ensuring that the first conductive layer 130 and the second conductive layer 140 can function normally. Specifically, the first insulating layer 170 is provided with a second through hole 171, which is connected to the first through hole 141. One end of the first external lead 150 passes through the first through hole 141 and the second through hole 171 and is connected to the second conductive layer 140. The presence of the second through hole 171 facilitates the first external lead 150 to pass through the insulating layer and form an electrical connection with the first conductive layer 130.

[0073] It should be noted that the two electrical connections are the two cold ends of a thermocouple structure. The two cold ends need to be placed in an environment with similar temperatures. If the temperature difference between the two cold ends is too large, it will affect the accuracy of the test. Therefore, the two electrical connections can be placed close to each other to ensure that the two cold ends are in an environment with similar temperatures, thus ensuring the accuracy of the measurement.

[0074] In one specific embodiment, such as Figure 2 As shown, along the thickness direction of the substrate 110, the second through-hole 171 is disposed adjacent to the first through-hole 141, and the first conductive layer 130 and the second conductive layer 140 are disposed at intervals at the second through-hole 171. The first conductive layer 130 and the second conductive layer 140 are not directly electrically connected at the second through-hole 171, which facilitates the processing and formation of the first conductive layer 130 and the second conductive layer 140.

[0075] For example, such as Figure 2 and Figure 3As shown, the electrical connection between the first external lead 150 and the first conductive layer 130, and the electrical connection between the second external lead 160 and the second conductive layer 140, are both located close to the second through hole 171. Thus, the two electrical connections can be close to each other, and the temperature of the environment where the two electrical connections are located can be kept close, thereby improving the accuracy of temperature detection of the light emitter 120.

[0076] In another specific embodiment, such as Figure 5 As shown, the second through-hole 171 and the first through-hole 141 partially overlap, and a portion of the second conductive layer 140 is located in the second through-hole 171. The second conductive layer 140 located in the second through-hole 171 abuts against the first conductive layer 130, forming a second contact 192. The first conductive layer 130 and the second conductive layer 140 located between the first contact 191 and the second contact 192 can form a closed loop. When the temperature of the first contact 191 rises, a temperature difference exists between the first contact 191 and the second contact 192. Due to the thermoelectric effect, a thermoelectric electromotive force can be generated in this closed loop, and the voltage detection element 200 can detect the voltage. Compared to the first conductive layer 130 and the second conductive layer 140 being spaced apart at the second through hole 171, after the first conductive layer 130 and the second conductive layer 140 have a second contact point 192 at the second through hole 171, a closed loop can be formed between the first contact point 191 and the second contact point 192. The thermoelectric potential formed in this closed loop is more stable, which makes it easier for the voltage detection element 200 to detect the voltage and improves the accuracy of the detection result.

[0077] For example, such as Figure 5 As shown, the electrical connection between the first external lead 150 and the first conductive layer 130, and the electrical connection between the second external lead 160 and the second conductive layer 140, are both located close to the second contact 192. Thus, the two electrical connections can be close to each other, and the temperatures of the two electrical connections can be kept close, thereby improving the accuracy of temperature detection of the light emitter 120.

[0078] It should be noted that since the first contact point 191 is close to the light-emitting body 120, the first contact point 191 is close to the welding area of ​​the light-emitting body 120, while the second contact point 192 is located in the non-welding area.

[0079] In the embodiments of this application, such as Figure 4 and Figure 5As shown, the display panel 100 also includes a second insulating layer 180, which covers the side of the second conductive layer 140 facing away from the substrate 110. The second insulating layer 180 can provide protection and isolation for the first conductive layer 130 and the second conductive layer 140. In addition, a portion of the second insulating layer 180 is located in the first through hole 141, and the second insulating layer 180 located in the first through hole 141 fills the space between the first external lead 150 and the second conductive layer 140. With this arrangement, the second insulating layer 180 not only provides protection and isolation but also facilitates insulation between the first external lead 150 in the first through hole 141 and the second conductive layer 140.

[0080] Below, in conjunction with Figure 2 and Figure 3 The thermally conductive structure formed by the first conductive layer 130, the second conductive layer 140, and the light-emitting element 120 at the first contact 191 will be described:

[0081] In one specific embodiment, such as Figure 3 As shown, the display panel 100 also includes a heat-conducting layer 194, at least partially filled between the electrode 121 of the light-emitting element 120 and the first contact 191; the first conductive layer 130 and the second conductive layer 140 located at the first contact 191 are thermally connected to the electrode 121 of the light-emitting element 120 through the heat-conducting layer 194. With this configuration, the electrode 121 of the light-emitting element 120 generates heat during operation, and this heat can be transferred to the first contact 191 through the heat-conducting element; the first conductive layer 130 and the second conductive layer 140 are thermally connected to the light-emitting element 120.

[0082] In addition, such as Figure 3 As shown, the two electrodes 121 of the light emitter 120 can pass through the heat-conducting layer 194. The heat-conducting layer 194 can conduct heat from the light emitter 120, accelerating its heat dissipation and cooling. Furthermore, the heat-conducting layer 194 can be insulating, thus preventing electrical connections between the first conductive layer 130, the second conductive layer 140, and the electrodes 121 of the light emitter 120 while conducting heat, ensuring that the two conductive layers and the electrodes 121 of the light emitter 120 do not interfere with each other.

[0083] In another specific embodiment, such as Figure 2 and Figure 6 As shown, at least one of the first conductive layer 130 and the second conductive layer 140 located at the first contact 191 abuts against the electrode 121 of the light emitter 120. With this configuration, the electrode 121 of the light emitter 120 generates heat during operation, and this heat can be directly transferred to the first contact 191, allowing the first conductive layer 130 and the second conductive layer 140 to directly conduct heat with the light emitter 120. Figure 6As shown, the first conductive layer 130 and the second conductive layer 140 can also function as pads, facilitating the connection of the electrode 121 of the light emitter 120 to the substrate 110. Specifically, both the first conductive layer 130 and the second conductive layer 140 can abut against the electrode 121 of the light emitter 120.

[0084] It should be noted that the heat generated by the light-emitting body 120 at its electrode 121 is more concentrated. After the hot end of the thermocouple structure is thermally connected to the electrode 121 of the light-emitting body 120, the hot end can be heated quickly, and a larger thermoelectric potential can be generated in the thermocouple structure, thereby improving the sensitivity of temperature measurement. At the same time, it will not affect the normal light emission of the light-emitting body 120.

[0085] For example, such as Figure 6 As shown, an electrode layer 111 is provided on the substrate 110; a first conductive layer 130 and a second conductive layer 140 located at the first contact 191 are connected to form a pad portion 193; the pad portion 193 is disposed between the light-emitting element 120 and the electrode layer 111, and the electrode 121 of the light-emitting element 120 is electrically connected to the electrode layer 111 through the pad portion 193. The electrode layer 111 can transfer heat to the pad portion 193, and the pad portion 193 can act as a hot end; at the same time, the presence of the pad portion 193 also facilitates the connection of the light-emitting element 120 to the substrate 110, and facilitates the electrical connection between the electrode 121 of the light-emitting element 120 and the electrode layer 111.

[0086] For example, the materials of the first conductive layer 130 and the second conductive layer 140 can be combined in one of the following ways: NiCr / NiSi, NiSi / NiCr, NiCr / CuNi, CuNi / NiCr, Fe / CuNi, and CuNi / Fe. For instance, when the material of the first conductive layer 130 is NiCr, the material of the second conductive layer 140 can be NiSi. With this configuration, when one of the material combinations of the first conductive layer 130 and the second conductive layer 140 is used, a significant thermoelectric potential is generated in the thermocouple structure, thereby enabling accurate and efficient detection of the temperature at the light emitter 120.

[0087] For example, the first external lead 150 and the second external lead 160 are made of the same material; for example, the first external lead 150 and the second external lead 160 can be made of common trace metals such as Cu and CuNi, so that the first conductive layer 130 and the second conductive layer 140 can form an electrical connection with the voltage detection element 200 through these trace metals.

[0088] Based on the above embodiments, this application also provides a display device, including the display panel 100 of any of the above embodiments. The display device can be any device with display function, such as a mobile device like a mobile phone, tablet computer, laptop computer, handheld computer, in-vehicle electronic device, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), or a non-mobile device like a personal computer (PC), television (TV), ATM, or self-service machine.

[0089] Based on the above embodiments, this application also provides a display system, such as... Figure 1 As shown, the display system includes a voltage detection element 200, a power supply element 300, a control element 400, and a display panel 100 in any of the above embodiments; the control element 400 is electrically connected to the voltage detection element 200 and the power supply element 300; one end of the first external lead 150 and the second external lead 160 in the display panel 100 is electrically connected to the voltage detection element 200, and the power supply element 300 is electrically connected to the display panel 100.

[0090] Among them, the voltage detection device 200 can be a voltage measuring instrument, which can be used to detect the voltage in the thermocouple structure in the display panel 100 and send the voltage value information to the control device 400; the power supply device 300 can be a battery, which can provide current for the display of the display panel 100; the control device 400 can be a programmable logic controller, which can control the output current of the power supply device 300 according to the magnitude of the voltage value.

[0091] Specifically, when the voltage detected by the voltage detection device 200 is too high, it means that the temperature at the light-emitting body 120 is too high, and the light-emitting body 120 will have a problem of reduced brightness. At this time, the control device 400 can control the output current of the power supply device 300, and increase the output current to improve the brightness of the light-emitting body 120, thereby improving the brightness of the display panel 100, ensuring the normal display of the display panel 100, and avoiding problems such as thermal ghosting and inaccurate image quality.

[0092] The display system provided in this application can detect and monitor the temperature of any light-emitting element 120 in the display panel 100 in real time, and can perform real-time temperature compensation on the light-emitting element 120 based on the temperature detection results to improve the brightness of the light-emitting element 120 and ensure the normal display of the display panel 100.

[0093] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The devices or components referred to in this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0094] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized in that, It includes a substrate, and a light emitter, a first conductive layer, a second conductive layer, a first external lead, and a second external lead disposed on the substrate; the first conductive layer and the second conductive layer are made of different materials; The first conductive layer and the second conductive layer form a first contact point, and are thermally connected to the light-emitting element at the first contact point; One end of the first external lead is electrically connected to the first conductive layer, and one end of the second external lead is electrically connected to the second conductive layer. The two electrical connections are spaced apart from the first contact point.

2. The display panel according to claim 1, characterized in that, Along the thickness direction of the substrate, the first conductive layer is disposed between the substrate and the second conductive layer, and the second conductive layer is provided with a first through hole; One end of the first external lead is inserted into the first through hole and electrically connected to the first conductive layer. The first external lead located in the first through hole is insulated from the second conductive layer.

3. The display panel according to claim 2, characterized in that, It also includes a first insulating layer, which is disposed between the first conductive layer and the second conductive layer; The first insulating layer has a second through hole, which is connected to the first through hole; one end of the first external lead is inserted into the first through hole and the second through hole and is connected to the second conductive layer.

4. The display panel according to claim 3, characterized in that, Along the thickness direction of the substrate, the second through hole is disposed adjacent to the first through hole, and the first conductive layer and the second conductive layer are disposed at a distance from each other at the second through hole; Preferably, the electrical connection between the first external lead and the first conductive layer, and the electrical connection between the second external lead and the second conductive layer, are both located near the second through hole.

5. The display panel according to claim 3, characterized in that, The second through hole and the first through hole partially overlap, and part of the second conductive layer is located in the second through hole; the second conductive layer located in the second through hole abuts against the first conductive layer and forms a second contact point; Preferably, the electrical connection between the first external lead and the first conductive layer, and the electrical connection between the second external lead and the second conductive layer, are both located close to the second contact point.

6. The display panel according to any one of claims 2-5, characterized in that, It also includes a second insulating layer that covers the side of the second conductive layer away from the substrate; a portion of the second insulating layer is located in the first through-hole, and the second insulating layer located in the first through-hole fills between the first external lead and the second conductive layer.

7. The display panel according to any one of claims 1-5, characterized in that, It also includes a thermally conductive layer, at least a portion of which is filled between the electrode of the light-emitting body and the first contact; the first conductive layer and the second conductive layer located at the first contact are thermally connected to the electrode of the light-emitting body through the thermally conductive layer; And / or, at least one of the first conductive layer and the second conductive layer located at the first contact point abuts against the electrode of the light emitter; And / or, the two electrical connections are close to each other.

8. The display panel according to any one of claims 1-5, characterized in that, An electrode layer is provided on the substrate; the first conductive layer and the second conductive layer located at the first contact point are connected to form a pad portion; The pad portion is disposed between the light-emitting element and the electrode layer, and the electrode of the light-emitting element is electrically connected to the electrode layer through the pad portion.

9. The display panel according to any one of claims 1-5, characterized in that, The combination of materials for the first conductive layer and the second conductive layer is one of NiCr / NiSi, NiSi / NiCr, NiCr / CuNi, CuNi / NiCr, Fe / CuNi, and CuNi / Fe; And / or, the first outer lead and the second outer lead are made of the same material.

10. A display system, characterized in that, Includes a voltage detection device, a power supply device, a control device, and a display panel as described in any one of claims 1-9; The control unit is electrically connected to the voltage detection unit and the power supply unit; One end of the first external lead and the second external lead in the display panel are electrically connected to the voltage detection element, and the power supply element is electrically connected to the display panel.

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