Display module and display device

Abstract

The present application discloses a display module and a display device, wherein the display module includes a substrate, a light-emitting device, a radiation component and a detection unit, wherein the light-emitting device is located on one side of the substrate; the radiation component is located on a side of the light-emitting device close to the substrate, and the orthographic projection of the radiation component on the substrate at least partially overlaps with the orthographic projection of the light-emitting device on the substrate, and the radiation component is used to radiate the heat of the light-emitting device in the form of a radiation signal; the detection unit is used to detect the radiation signal, and the radiation signal can be used to characterize the thermal parameters of the light-emitting device. In the display module provided in the present application, the signal transmission method between the radiation component and the detection unit is wireless transmission, which can effectively improve the signal distortion during the temperature detection process, thereby making the temperature detection of the light-emitting device more accurate, so as to improve the compensation accuracy when the light-emitting device is compensated for according to the temperature of the light-emitting device, so as to further improve the display quality of the display module.

Description

Technical Field

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

[0002] With the development of display technology, the performance requirements for display devices are getting higher and higher. Micro-LED display technology has gradually become the mainstream product of the next generation of display with its low power consumption, long life and high brightness. However, Micro-LED has the problem that the luminous efficiency is greatly affected by temperature, which affects the performance of display devices. Summary of the invention

[0003] The embodiments of the present application provide a display module and a display device, which can perform more accurate temperature detection on the light-emitting device in the display module.

[0004] An embodiment of a first aspect of the present application provides a display module, including:

[0005] substrate substrate;

[0006] A light emitting device, wherein the light emitting device is located on one side of the substrate;

[0007] a radiation component, the radiation component being located on a side of the light-emitting device close to the substrate, the orthographic projection of the radiation component on the substrate at least partially overlapping the orthographic projection of the light-emitting device on the substrate, and the radiation component being used to radiate the heat of the light-emitting device in the form of a radiation signal;

[0008] A detection unit, the detection unit is used to detect the radiation signal, and the radiation signal can be used to characterize the thermal parameters of the light-emitting device.

[0009] The embodiment of the second aspect of the present application further provides a display device, comprising the display module provided by the first aspect of the present application.

[0010] The display module provided in the present application includes a substrate, a light-emitting device, a radiation component and a detection unit. The radiation component and the detection unit are used to realize the temperature detection of the light-emitting device. Specifically, the heat of the light-emitting device is radiated in the form of a radiation signal by the radiation component, and the radiation signal is detected by the detection unit, thereby realizing the temperature detection of the light-emitting device. In the display module, the signal transmission mode between the radiation component and the detection unit is wireless transmission, so that the signal distortion caused by the transmission through the wiring can be improved. For example, the signal in the wiring is easily interfered by the electrical signal in the display module and the influence of temperature on the resistance of the wiring itself, so that the signal in the wiring is easily distorted. In the display module provided in the present application, the signal transmission mode between the radiation component and the detection unit is wireless transmission, which can effectively improve the signal distortion in the temperature detection process, and the signal transmission effect is more accurate, so that the temperature detection of the light-emitting device is more accurate, so that when the light-emitting device is compensated for according to the temperature of the light-emitting device, the compensation accuracy is improved, so as to further improve the display quality of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 is a structural schematic diagram of a display module provided in an embodiment of the present application;

[0013] Figure 2 yes Figure 1 A cross-sectional view along the middle line B-B';

[0014] Figure 3 yes Figure 1 Another cross-sectional view along the middle line B-B';

[0015] Figure 4 yes Figure 3 Enlarged view of the middle C area;

[0016] Figure 5 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0017] Figure 6 yes Figure 5 A cross-sectional view along the middle line D-D';

[0018] Figure 7 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0019] Figure 8 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0020] Fig. 9 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0021] Fig.10 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0022] Fig.11 is a partial structural schematic diagram of another display module provided in an embodiment of the present application;

[0023] Fig.12 is a partial structural schematic diagram of another display module provided in an embodiment of the present application;

[0024] Fig.13 is a partial structural schematic diagram of another display module provided in an embodiment of the present application;

[0025] Fig.14 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0026] Fig.15 is a bottom view of a display module provided in an embodiment of the present application;

[0027] Fig.16 is a schematic diagram of the structure of a detection unit of a display module provided in an embodiment of the present application;

[0028] Fig.17 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0029] Fig.18 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0030] Fig.19 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0031] Fig. 20 is a schematic diagram of the structure of another display module provided in an embodiment of the present application;

[0032] Fig.21 It is a structural schematic diagram of another display module provided in an embodiment of the present application.

[0033] In the attached figure:

[0034] 1-display module; 10-substrate; 11-light emitting device; 111-first color light emitting device; 112-second color light emitting device; 12-radiation component; 121-first radiation component; 122-second radiation component; 123-third radiation component; 124-fourth radiation component; 125-fifth radiation component; 13-detection unit; 131-first detection unit; 132-second detection unit; 133-third detection unit; 14-array layer; 134-infrared detection diode; 135-storage capacitor; 136-open off transistor; 141-transistor; A1-light-emitting area; A2-light-transmitting area; A3-middle display area; A4-edge display area; A5-transition display area; 15-driving chip; 16-temperature detection driving device; S1-scanning signal line; D1-data output signal line; Vss-first fixed voltage; x-first direction; y-second direction; 17-connecting component; 171-first flexible circuit board; 172-second flexible circuit board; 173-connector; 174-flexible circuit board; 18-carrying substrate; 19-ground metal film. DETAILED DESCRIPTION

[0035] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] The inventor has found through research that in order to solve the problem that the luminous efficiency of Micro-LED display devices is greatly affected by temperature and affects the performance of the display devices, conventional technology uses a temperature sensor to obtain the real-time temperature in the Micro-LED display module, and compensates the luminous efficiency of the Micro-LED according to the real-time temperature. However, the temperature sensor is set inside the Micro-LED display panel, and the temperature signal obtained by the temperature sensor is transmitted to the driver chip of the display panel through a wire. Since the wire is greatly affected by the temperature and the circuit inside the display panel, it is easy to cause distortion of the temperature signal, which makes the compensation effect inaccurate. Based on the research on the above problems, the inventor provides a display module and a display device to achieve more accurate compensation and improve display quality.

[0038] In order to better understand this application, Figures 1 to 21 The display module and the display device according to the embodiments of the present application are described in detail.

[0039] See also Figure 1 and Figure 2 The embodiment of the present application provides a display module 1, comprising a base substrate 10, a light emitting device 11, a radiation component 12 and a detection unit 13. The light emitting device 11 is located on one side of the base substrate 10. The radiation component 12 is located on the side of the light emitting device 11 close to the base substrate 10, and the orthographic projection of the radiation component 12 on the base substrate 10 overlaps with the orthographic projection of the light emitting device 11 on the base substrate 10 at least partially, and the radiation component 12 is used to radiate the heat of the light emitting device 11 in the form of a radiation signal. The detection unit 13 is used to detect the radiation signal, and the radiation signal can be used to characterize the thermal parameters of the light emitting device 11.

[0040] In the display module 1 provided in the present application, the base substrate 10 is made of a transparent material, and the base substrate 10 may be a flexible base substrate 10, formed of a thin polymer, such as polyimide. Alternatively, the base substrate 10 may be a rigid substrate, and the material may be glass. The present application does not specifically limit the material of the base substrate 10.

[0041] The light emitting device 11 may be a Micro-LED, and the light emitting efficiency of a Micro-LED is greatly affected by temperature. It is understandable that the light emitting device 11 may also be an OLED, a Mini-LED, etc. As long as the light emitting device 11 whose light emitting efficiency is affected by temperature is applicable to the present application, the present application does not specifically limit it. The present application only takes Micro-LED as an example for detailed description.

[0042] The display module 1 provided in the present application includes a substrate 10, a light-emitting device 11, a radiation component 12 and a detection unit 13. The radiation component 12 and the detection unit 13 are used to detect the temperature of the light-emitting device 11. Specifically, the heat of the light-emitting device 11 is radiated in the form of a radiation signal by the radiation component 12, and the radiation signal is detected by the detection unit 13, thereby realizing the temperature detection of the light-emitting device 11. In the display module 1, the signal transmission method between the radiation component 12 and the detection unit 13 is wireless transmission, thereby improving the signal distortion caused by transmission through wiring. For example, the signal in the wiring is easily interfered by the electrical signal in the display module 1 and the influence of temperature on the resistance of the wiring itself, thereby making the signal in the wiring easily distorted. In the display module 1 provided in the present application, the signal transmission method between the radiation component 12 and the detection unit 13 is wireless transmission, which can effectively improve the signal distortion during the temperature detection process, and the signal transmission effect is more accurate, thereby making the temperature detection of the light-emitting device 11 more accurate, so as to improve the compensation accuracy when the light-emitting device 11 is compensated for the light emission according to the temperature of the light-emitting device 11, so as to further improve the display quality of the display module 1.

[0043] In the display module 1 provided in the present application, the orthographic projection of the radiation component 12 on the base substrate 10 and the orthographic projection of the light-emitting device 11 on the base substrate 10 at least partially overlap, including the case where the orthographic projections of the radiation component 12 and the light-emitting device 11 on the base substrate 10 partially overlap, such as Figure 2 It also includes the case where the orthographic projections of the radiation component 12 and the light emitting device 11 on the substrate 10 completely overlap, such as Figure 3 As shown. Figure 2 As shown, when partially overlapped, the orthographic projection of the radiation component 12 on the substrate 10 may be larger than the orthographic projection of the light emitting device 11 on the substrate 10, and the orthographic projection of the radiation component 12 on the substrate covers the orthographic projection of the light emitting device 11 on the substrate 10, so that the radiation component 12 absorbs the heat of the light emitting device 11 to a greater extent to improve the accuracy of temperature detection.

[0044] In a feasible implementation manner, the radiation component 12 is a light-absorbing film, and the radiation signal is infrared rays.

[0045] Among them, infrared, also known as infrared radiation, refers to electromagnetic waves with a wavelength of 0.78 to 1000 μm. The part with a wavelength of 0.78 to 1.5 μm is called near infrared, the part with a wavelength of 1.5 to 10 μm is called mid-infrared, and the part with a wavelength of 10 to 1000 μm is called far infrared. The part with a wavelength of 2.0 to 1000 μm is also called thermal infrared. Infrared radiation can be based on the fact that any object will produce irregular movements of its own molecules and atoms under normal conditions, and continuously radiate thermal infrared energy.

[0046] The radiation component 12 is a light-absorbing film, which has the function of absorbing infrared rays. The light-absorbing film can absorb infrared rays emitted by the external environment, the circuit components in the display module 1, and the light-emitting device 11, and only emits directly related black body radiation due to its own temperature. The black body radiation is a radiation signal, which is infrared rays. That is, in the process of temperature detection, the light-absorbing film is used to obtain the heat of the light-emitting device 11 (in the form of heat transfer), and radiate the heat in the form of a radiation signal, so that the detection unit 13 receives the radiation signal and detects it. The radiation signal is infrared rays. At the same time, the light-absorbing film absorbs infrared rays with interfering properties. The infrared rays with interfering properties include infrared rays emitted by the external environment, the circuit components in the display module 1, and the light-emitting device 11, etc., to prevent the infrared rays with interfering properties from being detected by the detection unit 13, so that the detection unit 13 only detects the radiation signal related to the heat of the light-emitting device 11, and avoids the detection unit 13 from detecting infrared rays with interfering properties, thereby improving the accuracy of temperature detection.

[0047] In a feasible implementation, the material of the light-absorbing film includes at least one of molybdenum sulfide and ink, and may also include coal, black paint, or carbon nanotubes.

[0048] In the above embodiment, the light-absorbing film is made of a dark material, specifically a black material, so as to absorb the interfering infrared rays and obtain the heat of the light-emitting device 11 by heat transfer, and only emit an infrared radiation signal based on its own heat, thereby ensuring the accuracy of temperature detection.

[0049] In a possible implementation, Figure 2 , Figure 3 and Figure 4 As shown, the display module 1 provided by the present application further includes an array layer 14, and the array layer 14 is located on a side of the light emitting device 11 close to the base substrate 10. The radiation component 12 is located on a side of the array layer 14 close to the base substrate 10.

[0050] In the above embodiment, the array layer 14 includes a transistor 141, and the radiation component 12 is arranged on a side of the array layer 14 close to the base substrate 10 to block the infrared rays generated by the channel region of the transistor 141, so that the infrared rays generated by the channel region of the transistor 141 are absorbed by the radiation component 12 when irradiated onto the radiation component 12, thereby preventing the infrared rays generated by the channel region from being detected by the detection unit 13 and affecting the accuracy of temperature detection.

[0051] In a feasible implementation manner, the radiation component 12 corresponds to at least one light-emitting device 11 .

[0052] In the above embodiment, if Figure 2 and Figure 3 As shown, the radiation component 12 can be arranged in a whole layer, that is, the orthographic projection of the radiation component 12 on the base substrate 10 covers the base substrate 10. Alternatively, the radiation component 12 has a patterned structure, that is, the radiation component 12 is divided into a plurality of regions, and different regions are arranged non-continuously, so that different regions can be independent of each other, reducing heat conduction between different regions, thereby improving the accuracy of the radiation signal of each region.

[0053] In the above embodiment, the function of the radiation component 12 is to radiate the heat of the light emitting device 11 in the form of a radiation signal, so that the detection unit 13 can receive and detect the radiation signal, thereby realizing the temperature detection of the light emitting device 11. Among them, on the one hand, it is necessary to obtain the heat of the light emitting device 11 by the radiation component 12 in the form of heat transfer and radiate it in the form of a radiation signal, and on the other hand, it is necessary to isolate other infrared rays with interfering properties by the radiation component 12 to prevent the infrared rays with interfering properties from affecting the detection result of the detection unit 13, thereby improving the accuracy of temperature detection. Therefore, the radiation component 12 needs to be set corresponding to the light emitting device 11, so as to accurately obtain the heat of the light emitting device 11 and isolate the interference of the infrared rays with interfering properties. Among them, the radiation component 12 corresponds to the light emitting device 11, which means that the orthographic projections of the radiation component 12 and the light emitting device 11 on the substrate 10 at least partially overlap, and specifically, the orthographic projection of the light emitting device 11 on the substrate 10 is located within the orthographic projection of the radiation component 12 on the substrate 10, so that the radiation component 12 can better isolate the infrared rays with interfering properties.

[0054] In a possible implementation, Figure 5 and Figure 6 As shown, the display module 1 includes a plurality of light-emitting areas A1 and a light-transmitting area A2 located around the light-emitting area A1. The light-emitting area A1 includes at least one light-emitting device 11, and the radiation component 12 is located in the light-emitting area A1.

[0055] In the above embodiment, the display module 1 can be a transparent display module 1, including a light-emitting area A1 and a light-transmitting area A2. The light-emitting area A1 includes a light-emitting device 11 for display, and the light-transmitting area A2 does not include the light-emitting device 11 and is only used for light transmission. The radiation component 12 adopts a patterned design and is only distributed in the light-emitting area A1 to obtain the heat of the light-emitting device 11. The radiation component 12 is not provided in the light-transmitting area A2, thereby avoiding affecting the transmittance of the light-transmitting area A2 and ensuring the performance of the transparent display module 1.

[0056] In a possible implementation, Figure 7As shown, the radiation component 12 is patterned, specifically, the radiation component 12 includes a first radiation component 121 and a second radiation component 122, the number of light-emitting devices 11 corresponding to the first radiation component 121 is M, the number of light-emitting devices 11 corresponding to the second radiation component 122 is N, and one of M and N is greater than the other.

[0057] In the above embodiment, the radiation component 12 includes a first radiation component 121 and a second radiation component 122. The number of light-emitting devices 11 corresponding to the first radiation component 121 is M, that is, the number of light-emitting devices 11 whose orthographic projections on the substrate 10 are located within the orthographic projections of the first radiation component 121 on the substrate 10 is M. The number of light-emitting devices 11 corresponding to the second radiation component 122 is N, that is, the number of light-emitting devices 11 whose orthographic projections on the substrate 10 are located within the orthographic projections of the second radiation component 122 on the substrate 10 is N.

[0058] In the above embodiment, one of M and N is greater than the other, that is, the areas of the first radiation component 121 and the second radiation component 122 are not equal. It can be understood that the smaller the area of ​​the radiation component 12, the fewer the number of corresponding light-emitting devices 11, and the less interference the radiation signal emitted by each radiation component 12 from other light-emitting devices 11 when obtaining the heat of the light-emitting device 11, and the higher the accuracy of temperature detection. Therefore, the radiation components 12 at various positions can be designed differently according to the accuracy requirements of temperature detection at various positions in the display module 1. It can include differentiated design according to the different levels of human eye attention in different areas of the display module 1. The details are as follows:

[0059] In a specific embodiment, the display module 1 includes a middle display area A3 surrounding the center of the display module 1 and an edge display area A4 surrounding the middle display area A3. The first radiation component 121 is located in the middle display area A3, and the second radiation component 122 is located in the edge display area A4; <N。

[0060] In the above embodiments, the middle display area A3 is more likely to be noticed by the human eye than the edge display area A4. Therefore, the display quality of the middle display area A3 is more likely to affect the overall user experience of the display module 1. The first radiation component 121 is located in the middle display area A3, and the second radiation component 122 is located in the edge display area A4; and the number of the light-emitting devices 11 corresponding to the first radiation component 121 is less than the number of the light-emitting devices 11 corresponding to the second radiation component 122, that is, M < N. The number of the light-emitting devices 11 corresponding to the first radiation component 121 is less than that of the second radiation component 122, so that the heat influence among the light-emitting devices 11 corresponding to the first radiation component 121 is smaller, and the accuracy of the heat of the light-emitting devices 11 obtained through the first radiation component 121 is higher. As a result, the accuracy of the temperature detection of the middle display area A3 is higher. When adjusting the light-emitting efficiency of the light-emitting devices 11 according to the acquired temperature, the adjustment effect of the light-emitting efficiency of the light-emitting devices 11 in the middle display area A3 is better, thereby effectively improving the display quality of the middle display area A3 and enhancing the user experience. At the same time, the number of the light-emitting devices 11 corresponding to the second radiation component 122 in the edge display area A4 is larger, so that the number of the radiation components 12 provided in the display module 1 can be reduced under the condition of a certain number of the light-emitting devices 11, that is, the patterning process of the radiation component 12 is simplified, and the manufacturing process is simplified.

[0061] In a specific embodiment, as Figure 8 shown, the detection unit 13 includes a first detection unit 131 and a second detection unit 132. The first radiation component 121 corresponds to at least one first detection unit 131, and the second radiation component 122 corresponds to at least one second detection unit 132. The number of the light-emitting devices 11 corresponding to the first detection unit 131 is P, and the number of the light-emitting devices 11 corresponding to the second detection unit 132 is Q, where P ≤ Q.

[0062] In the above embodiments, the middle display area A3 is more likely to be noticed by the human eye than the edge display area A4. Therefore, the display quality of the middle display area A3 is more likely to affect the overall user experience of the display module 1. The first radiation component 121 is located in the middle display area A3, the second radiation component 122 is located in the edge display area A4, and M < N. At the same time, the first radiation component 121 corresponds to at least one first detection unit 131, and the second radiation component 122 corresponds to at least one second detection unit 132. The number of the light-emitting devices 11 corresponding to the first detection unit 131 is P, and the number of the light-emitting devices 11 corresponding to the second detection unit 132 is Q, where P ≤ Q. That is, the number of the light-emitting devices 11 corresponding to the first detection unit 131 located in the middle display area A3 is less than or equal to the number of the light-emitting devices 11 corresponding to the second detection unit 132 located in the edge display area A4. Among them:

[0063] When the number of light-emitting devices 11 corresponding to the first detection unit 131 located in the middle display area A3 is equal to the number of light-emitting devices 11 corresponding to the second detection unit 132 located in the edge display area A4, the difference in temperature detection accuracy between the middle display area A3 and the edge display area A4 is only affected by the difference between the first radiation component 121 and the second radiation component 122.

[0064] When the number of light-emitting devices 11 corresponding to the first detection unit 131 located in the middle display area A3 is less than the number of light-emitting devices 11 corresponding to the second detection unit 132 located in the edge display area A4, the difference in temperature detection accuracy between the middle display area A3 and the edge display area A4 is not only affected by the difference between the first radiation component 121 and the second radiation component 122, but also by the difference between the first detection unit 131 and the second detection unit 132. At this time, the first radiation component 121 acquires heat more accurately than the second radiation component 122, and the number of light-emitting devices 11 corresponding to the first detection unit 131 is less than that of the second detection unit 132, so that the first detection unit 131 acquires radiation signals more accurately than the second detection unit 132, thereby further improving the temperature detection accuracy of the middle display area A3.

[0065] Specifically, the number of first detection units 131 corresponding to the first radiation component 121 is T1, and the number of second detection units 132 corresponding to the second radiation component 122 is T2. The sizes of T1 and T2 are not particularly limited in this application. For example, the first radiation component 121 corresponds to 3 light-emitting devices 11, and the second radiation component 122 corresponds to 12 light-emitting devices 11. The number of first detection units 131 corresponding to the first radiation component 121 can be 3, and the number of second detection units 132 corresponding to the second radiation component 122 can be 3 or 4, etc., which can make the number of light-emitting devices 11 corresponding to the first detection unit 131 less than the number of light-emitting devices 11 corresponding to the second detection unit 132, which is not particularly limited in this application.

[0066] In a possible implementation, Fig. 9 As shown, the display module 1 further includes a transitional display area A5 located between the middle display area A3 and the edge display area A4. The radiation component 12 further includes a third radiation component 123, which is located in the transitional display area A5. The number of light-emitting devices 11 corresponding to the third radiation component 123 is S; wherein, M <S<N。

[0067] In the above embodiment, a transition display area A5 is provided between the middle display area A3 and the edge display area A4. By setting the number of light-emitting devices 11 corresponding to the third radiation component 123 located in the transition display area A5 to be greater than the number of light-emitting devices 11 corresponding to the first radiation component 121 and less than the number of light-emitting devices 11 corresponding to the second radiation component 122, the temperature acquisition accuracy of the middle display area A3, the transition display area A5 and the edge display area A4 can be gradually reduced.

[0068] Specifically, M, S, and N may increase according to the rule of arithmetic progression or according to the rule of geometric progression, and this application does not make any special limitation.

[0069] Specifically, the number of transition display areas A5 can be one, or multiple transition display areas A5 surrounding the middle display area A3 and nested in layers, which is not particularly limited in this application. When multiple transition display areas A5 are included, it is necessary to follow the regular change that the number of light-emitting devices 11 corresponding to the radiation components 12 in each transition display area A5 gradually decreases from the middle display area A3 to the edge display area A4, so that the acquisition accuracy gradually decreases. When the light-emitting efficiency of the light-emitting device 11 is adjusted by the acquired temperature, the light-emitting efficiency adjustment effect of the light-emitting device 11 gradually decreases from the middle to the edge, which improves the display quality of the middle display area A3 while reducing the contrast difference between adjacent display areas, thereby improving the user experience.

[0070] In a possible implementation, Fig. 9 As shown, the detection unit 13 includes a first detection unit 131, a second detection unit 132 and a third detection unit 133, the first radiation component 121 corresponds to at least one first detection unit 131, the second radiation component 122 corresponds to at least one second detection unit 132, the third radiation component 123 corresponds to at least one third detection unit 133, the number of light-emitting devices 11 corresponding to the first detection unit 131 is P, the number of light-emitting devices 11 corresponding to the second detection unit 132 is Q, and the number of light-emitting devices 11 corresponding to the third detection unit 133 is T, wherein P≤T≤Q.

[0071] That is, the number P of light-emitting devices 11 corresponding to the first detection unit 131 located in the middle display area A3 is less than or equal to the number T of light-emitting devices 11 corresponding to the third detection unit 133 located in the transition display area A5, and the number T of light-emitting devices 11 corresponding to the third detection unit 133 located in the transition display area A5 is less than or equal to the number Q of light-emitting devices 11 corresponding to the second detection unit located in the edge display area A4, wherein:

[0072] When P = T = Q, the difference in temperature detection accuracy between the middle display area A3 and the edge display area A4 is only affected by the differences between the first radiation component 121, the second radiation component 122, and the third radiation component 123.

[0073] When P < T < Q, the difference in temperature detection accuracy between the middle display area A3 and the edge display area A4 is not only affected by the differences between the first radiation component 121, the second radiation component 122, and the third radiation component 123, but also affected by the differences between the first detection unit 131, the second detection unit 132, and the third detection unit 133. At this time, the first radiation component 121 obtains heat more accurately than the third radiation component 123, the third radiation component 123 obtains heat more accurately than the second radiation component 122, the number of light-emitting devices 11 corresponding to the first detection unit 131 is less than that of the third detection unit 133, and the number of light-emitting devices 11 corresponding to the third detection unit 133 is less than that of the second detection unit 132. As a result, the first detection unit 131 obtains radiation signals more accurately than the third detection unit 133, and the third detection unit 133 obtains radiation signals more accurately than the second detection unit 132, so that the temperature detection accuracy gradually decreases from the middle display area A3 to the edge display area A4.

[0074] Specifically, the number of the first detection units 131 corresponding to the first radiation component 121 is T1, the number of the second detection units 132 corresponding to the second radiation component 122 is T2, and the number of the third detection units 133 corresponding to the third radiation component 123 is T3. The sizes of T1, T2, and T3 are not particularly limited in this application.

[0075] In another specific embodiment, according to the accuracy requirements of temperature detection at each position in the display module 1, the differential design of the radiation components 12 at each position may further include: performing differential design according to different heat generation conditions in different regions of the display module 1, specifically as follows:

[0076] Such as Fig.10As shown, in the display module 1, a driving chip 15 is usually arranged near the lower border, such that the heat in area A6 near the lower border is relatively large. Therefore, the light-emitting devices 11 in this area A6 are greatly affected by heat, and the difference in the light-emitting efficiency of the light-emitting devices 11 in this area A6 and those in other areas A7 is more obvious. The temperature detection accuracy in area A6 can be improved through differential design, and the light-emitting efficiency of the light-emitting devices 11 in area A6 can be regulated according to the temperature, so as to reduce the difference in the light-emitting effects of the light-emitting devices 11 in each area of the display module 1 and improve the display uniformity. Specifically, the first radiation component 121 can be arranged in area A6 near the lower border, and the second radiation component 122 can be arranged in other areas A7; the number of light-emitting devices 11 corresponding to the first radiation component 121 is M, and the number of light-emitting devices 11 corresponding to the second radiation component 122 is N, where M < N. And / or, the first detection unit 131 can be arranged in area A6 near the lower border, and the second detection unit 132 can be arranged in other areas A7. The number of light-emitting devices 11 corresponding to the first detection unit 131 is P, and the number of light-emitting devices 11 corresponding to the second detection unit 132 is Q, where P < Q. The specific principle can refer to the specific content in the above-mentioned embodiments, and details are not described herein again.

[0077] In a feasible embodiment, as Fig.11 shown, the light-emitting device 11 includes a first-color light-emitting device 111 and a second-color light-emitting device 112. The detection unit 13 corresponds to the first-color light-emitting device 111, and the wavelength of the light emitted by the first-color light-emitting device 111 is greater than the wavelength of the light emitted by the second-color light-emitting device 112.

[0078] In the above embodiment, the light-emitting effects of light-emitting devices 11 of different colors are affected by temperature differently. Among them, the light-emitting effect of the first-color light-emitting device 111 is more severely affected by temperature. Only the detection unit 13 corresponding to the first-color light-emitting device 111 can be arranged in the display module 1 to detect the temperature of the first-color light-emitting device 111 and regulate the light-emitting efficiency of the first-color light-emitting device 111 according to the temperature, so as to compensate the light-emitting device 11 that is most severely affected by temperature under the condition of reducing the manufacturing process of the display module 1 and improve the cost performance.

[0079] In the above embodiment, the first-color light-emitting device 111 can be a red light-emitting device 11, and the second-color light-emitting device 112 can be a green light-emitting device 11.

[0080] As Fig.12As shown, the light emitting device 11 may also include a third color light emitting device 113, and the third color light emitting device 113 may be a blue light emitting device 11. The light emitting effects of the second color light emitting device 112 and the third color light emitting device 11 are less affected by temperature, and a detection unit 13 corresponding to the second color light emitting device 112 and the third color light emitting device 113 may be provided in the display module 1 to regulate the light emitting efficiency of the second color light emitting device 112 and the third color light emitting device 113 according to the temperature, so as to further improve the display quality of the display module 1.

[0081] In a possible implementation, Fig.13 As shown, the radiation component 12 includes a fourth radiation component 124 and a fifth radiation component 125, the fourth radiation component 124 corresponds to the first color light emitting device 111, and the areas of the fourth radiation components 124 are the same, and the fifth radiation component 125 corresponds to the second color light emitting device 112, and the areas of the fifth radiation components 125 are the same.

[0082] In the above embodiment, the fourth radiation component 124 corresponds to the first color light emitting device 111. Specifically, the number of the fourth radiation component 124 can be multiple, each of the fourth radiation component 124 can correspond to a preset number of first color light emitting devices 111, and in each fourth radiation component 124 and its corresponding first color light emitting device 111, the orthographic projection of the first color light emitting device 111 on the substrate is located within the orthographic projection of the fourth radiation component 124 on the substrate. The fifth radiation component 125 corresponds to the second color light emitting device 112. Specifically, the number of the fifth radiation component 125 can be multiple, each of the fifth radiation component 125 can correspond to a preset number of second color light emitting devices 112, and in each fifth radiation component 125 and its corresponding second color light emitting device 112, the orthographic projection of the second color light emitting device 112 on the substrate is located within the orthographic projection of the fifth radiation component 125 on the substrate.

[0083] In the above embodiment, each color light emitting device 11 is arranged opposite to a radiation component 12, which can avoid errors caused by different heat of different color light emitting devices 11. At the same time, the areas of each fourth radiation component 124 are set to be the same, and the areas of each fifth radiation component 125 are set to be the same, which can reduce errors caused by different areas of heat acquisition and different heat conduction of different radiation components 12.

[0084] In a feasible implementation manner, the radiation signal is infrared rays, and the detection unit 13 accordingly selects an infrared sensing device to facilitate sensing of the infrared rays.

[0085] In a possible implementation, Fig.14As shown, the orthographic projection of the radiation component 12 on the substrate 10 covers the orthographic projection of the detection unit 13 on the substrate 10 .

[0086] In the above embodiment, the orthographic projection of the detection unit 13 on the base substrate 10 is arranged within the orthographic projection of the radiation component 12 on the base substrate 10, so that the radiation component 12 can better absorb the infrared rays with interfering properties, effectively block these interfering infrared rays from being detected by the detection unit 13, and prevent these interfering infrared rays from causing adverse effects on the detection results of the detection unit 13. At the same time, the heat of the light-emitting device 11 can be more fully obtained and transmitted to the detection unit 13 in the form of a radiation signal, so that the detection unit 13 can detect the heat of the light-emitting device 11 more accurately.

[0087] In a possible implementation, Fig.15 As shown, the display module 1 also includes a temperature detection drive device 16, and a plurality of detection units 13 are arranged in an array. The detection units 13 adjacent to each other along a first direction x are connected via a scanning signal line S1, and the detection units 13 adjacent to each other along a second direction y are connected to the temperature detection drive device 16 via a data output signal line D1, wherein the first direction x and the second direction y intersect.

[0088] In the above embodiment, the first direction x may be a row direction, and the second direction y may be a column direction. The temperature detection drive device 16 may be disposed on the same side and in the same layer as the detection unit 13 of the base substrate 10 .

[0089] In the above embodiment, a scanning signal generating unit 20 is further included. The scanning signal generating unit 20 is used to generate a scanning signal. The scanning signal line S1 is connected to the scanning signal generating unit 20. The scanning signal line S1 is used to provide a scanning driving signal to the detection unit 13 to control whether the first signal acquired by the detection unit 13 is transmitted. The data output signal line D1 is used to transmit the detected first signal to the temperature detection driving device 16. Fig.16As shown, the detection unit 13 may include an infrared detection diode 134, a storage capacitor 135, and a switch transistor 136. The cathode of the infrared detection diode 134 is connected to the first plate of the storage capacitor 135, and is also connected to the first fixed voltage Vss. The anode of the infrared detection diode 134 is connected to the second plate of the storage capacitor 135, and is also connected to the first electrode of the switch transistor 136. The second electrode of the switch transistor 136 is connected to the data output signal line D1, and the control end of the switch transistor 136 is connected to the scan signal line S1. When the infrared detection diode 134 senses a radiation signal, it converts the radiation signal into a first signal and stores it in the storage capacitor 135. The first signal is an electrical signal. When the scan signal line S1 scans a certain detection unit 13 and drives the switch transistor 136 in the detection unit 13 to turn on, the first signal in the storage capacitor 135 is transmitted to the temperature detection driver 16 through the switch transistor 136 and the data output signal line D1, thereby realizing the conversion of the radiation signal into an electrical signal. The temperature detection driving device 16 can convert the first signal into a temperature signal for representing the heat of the light emitting device 11 , thereby realizing temperature detection of the light emitting device 11 .

[0090] In a feasible implementation, the display module 1 includes a plurality of light-emitting areas A1 and light-transmitting areas A2 located around the light-emitting areas A1 , the detection unit 13 is located in the light-emitting areas A1 , and the scanning signal lines S1 and the data transmission signal lines D1 are both made of transparent conductive materials.

[0091] The display module 1 may be a light-transmitting display module 1, including a light-emitting area A1 and a light-transmitting area A2, and the light-transmitting area A2 is distributed alternately with the light-emitting area A1. The light-emitting area A1 is used for display, including the light-emitting device 11, and the light-transmitting area A2 is not used for display, but only for light transmission, and does not include the light-emitting device 11. The detection unit 13 is arranged in the light-emitting area A1. On the one hand, the detection unit 13 can correspond to the light-emitting device 11, so that the detection result is more accurate. On the other hand, the detection unit 13 is only located in the light-emitting area A1 and not in the light-transmitting area A2, which can prevent the light transmittance of the light-transmitting area A2 from being affected, so as to prevent the performance of the light-transmitting display panel from being affected.

[0092] In the above embodiment, the light-transmitting area A2 is distributed adjacent to the light-emitting area A1, and both the scanning signal line S1 and the data output signal line D1 need to pass through the light-transmitting area A2 to interconnect the detection units 13 located in different light-emitting areas A1. Both the scanning signal line S1 and the data output signal line D1 are made of transparent conductive material, which can effectively reduce the impact on the transmittance of the light-transmitting area A2, thereby ensuring the performance of the light-transmitting display module 1.

[0093] Specifically, the transparent conductive material may be indium tin oxide, which has good light transmittance and strong conductivity.

[0094] In a possible implementation, Fig.17 As shown, the display module 1 further includes an array layer 14 and a driving chip 15 connected to the array layer 14 , and a temperature detection driving device 16 is connected to the driving chip 15 via a connecting component 17 .

[0095] In the above-mentioned display module 1, the array layer 14 includes a driving circuit for driving the light-emitting device 11, and the driving circuit is connected to the driving chip 15, and the driving chip 15 is used to control the driving circuit. Specifically, the driving chip 15 can adjust the brightness of the light-emitting device 11 by controlling the driving circuit. In the above-mentioned embodiment, the temperature detection driving device 16 can be connected to the temperature detection driving device 16 at the same layer as the detection unit 13. After the temperature detection driving device 16 detects the temperature of the light-emitting device, the temperature signal is transmitted to the driving chip 15. The driving chip 15 can adjust the light-emitting brightness of the light-emitting device 11 according to the temperature of the light-emitting device 11, so as to perform temperature compensation on the light-emitting device 11, thereby improving the display quality of the display module 1.

[0096] In a possible implementation, Fig.17 As shown, the connecting component 17 includes a first flexible circuit board 171 connected to the driving chip 15, a second flexible circuit board 172 connected to the temperature detection driving device 16, and a connector 173 for connecting the first flexible circuit board 171 with the second flexible circuit board 172. Along a direction parallel to the plane where the base substrate 10 is located, a preset distance is spaced between the connector 173 and the base substrate 10.

[0097] In the above embodiment, the temperature detection driver 16 is located on the side of the substrate 10 away from the light emitting device 11, and the driver chip 15 is located on the side of the substrate 10 facing the light emitting device 11, so the temperature detection driver 16 can be connected to the driver chip 15 outside the substrate 10 through the connection component 17. Specifically, the connection component 17 includes a first flexible circuit board 171, a second flexible circuit board 172 and a connector 173. The connector 173 is located outside the substrate 10 and is spaced a preset distance from the substrate 10 to prevent the heat of the connector 173 from being transferred to the substrate 10, thereby affecting the heat of the light emitting device 11 obtained by the radiation component 12. One end of the connector 173 is connected to the driver chip 15 through the first flexible circuit board 171, and the other end is connected to the temperature detection driver 16 through the second flexible circuit board 172, thereby realizing the connection between the temperature detection driver 16 and the driver chip 15.

[0098] In another possible implementation, if Fig.18As shown, the connection component 17 includes a flexible circuit board 174, one end of the flexible circuit board 174 is connected to the driving chip 15, and the other end is connected to the temperature detection driving device 16. The flexible circuit board 174 is fixed to the base substrate 10 and can be bent toward the side of the base substrate 10 away from the array layer 14.

[0099] In the above embodiment, the temperature detection driver 16 is located on the side of the substrate 10 away from the light emitting device 11, and the driver chip 15 is located on the side of the substrate 10 facing the light emitting device 11, so the flexible circuit board 174 can be bent from one side of the substrate 10 to the other side to achieve the connection between the temperature detection driver 16 and the driver chip 15. Specifically, one end of the flexible circuit board 174 is connected to the driver chip 15, and the other end is bent to the side of the substrate 10 away from the driver chip 15 and connected to the temperature detection driver 16. This embodiment can save the number of components in the display module 1, which helps to achieve its lightweight.

[0100] In a possible implementation, Fig.19 As shown, the connection component 17 includes a connector 173 , which is located in a via hole that runs through the display module 1 in the thickness direction. One end of the connector 173 is connected to the driving chip 15 , and the other end is connected to the temperature detection driving device 16 .

[0101] In the above embodiment, the temperature detection driver 16 is located on the side of the base substrate 10 away from the light emitting device 11, and the driver chip 15 is located on the side of the base substrate 10 facing the light emitting device 11, so the temperature detection driver 16 can be connected to the driver chip 15 through the via hole penetrating the base substrate 10 and the connector 173 located in the via hole. One end of the connector 173 is connected to the driver chip 15, and the other end is connected to the temperature detection driver 16 after passing through the via hole. This connection method makes the display module 1 more compact, helps to reduce the proportion of the non-display area, and increase the proportion of the display area, so as to improve the user experience.

[0102] In a possible implementation, Fig. 20 As shown, the display module 1 also includes a carrier substrate 18, and the detection unit 13 is located on the side of the carrier substrate 18 away from the base substrate 10. In the above embodiment, the display module 1 also includes a carrier substrate 18, and the carrier substrate 18 is used to carry the detection unit 13, the data output signal line D1, the scanning signal line S1, and the temperature detection drive device 16. The carrier substrate 18 is made of a transparent material, and the specific material can be glass or silicon. The carrier substrate 18 can reduce the heat transferred from the side of the base substrate 10 away from the light-emitting device 11 to the radiation component 12, so as to further isolate the influence of temperature on the radiation component 12, so that the heat obtained by the radiation part is closer to the actual heat of the light-emitting device 11.

[0103] In a possible implementation, Fig.21 As shown, the display module 1 further includes a grounding metal film 19 , and the grounding metal film 19 is disposed on a side of the detection unit 13 away from the base substrate 10 .

[0104] In the above embodiment, the grounded metal film 19 is arranged on the side of the detection unit 13 away from the base substrate 10, and is used to shield the interference of the external electric field and the external temperature on the data transmission signal line D1 and the scanning signal line S1, thereby reducing the occurrence of signal distortion problems during the transmission process. At the same time, it can reduce the heat transferred from the side of the base substrate 10 away from the light-emitting device 11 to the radiation component 12, so as to further isolate the influence of temperature on the radiation component 12.

[0105] The present application also provides a display device, comprising any one of the display modules 1 provided in the above embodiments of the present application.

[0106] In the display device, the temperature of the light emitting device 11 in the display module 1 can be detected, and the light emission of the light emitting device 11 can be compensated according to the temperature of the light emitting device 11, so that the light emission of the display device can be improved, and the problem of the temperature affecting the light emitting efficiency of the light emitting device 11 and affecting the display quality can be reduced. At the same time, the above-mentioned temperature detection is realized by arranging a radiation component 12 and a detection unit 13 in the display module 1. The radiation component 12 and the detection unit 13 adopt a wireless transmission method, which can effectively improve the signal distortion during the temperature detection process, and the signal transmission effect is more accurate, so that the temperature detection of the light emitting device 11 is more accurate, so that when the light emission of the light emitting device 11 is compensated according to the temperature of the light emitting device 11, the compensation accuracy is improved, so as to further improve the display quality of the display module 1. The display quality of the display device is significantly improved, thereby greatly improving the user experience.

[0107] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display module, characterized in that: include: substrate substrate; A light emitting device, wherein the light emitting device is located on one side of the substrate; a radiation component, the radiation component being located on a side of the light-emitting device close to the substrate, the orthographic projection of the radiation component on the substrate at least partially overlapping the orthographic projection of the light-emitting device on the substrate, and the radiation component being used to radiate the heat of the light-emitting device in the form of a radiation signal; A detection unit, the detection unit is used to detect the radiation signal, and the radiation signal can be used to characterize the thermal parameters of the light-emitting device; The radiation component corresponds to at least one of the light-emitting devices; The radiation component includes a first radiation component and a second radiation component. The number of the light-emitting devices corresponding to the first radiation component is M, the number of the light-emitting devices corresponding to the second radiation component is N, and one of M and N is greater than the other.

2. The display module according to claim 1, characterized in that: The radiation component is a light-absorbing film, and the radiation signal is infrared rays.

3. The display module according to claim 2, characterized in that: The material of the light absorption film includes at least one of molybdenum sulfide and ink.

4. The display module according to claim 2, characterized in that: Also includes: An array layer, the array layer is located on a side of the light emitting device close to the base substrate; The radiation component is located on a side of the array layer close to the base substrate.

5. The display module according to claim 1, characterized in that: The display module comprises a middle display area surrounding the center of the display module and an edge display area surrounding the middle display area; The first radiation component is located in the middle display area, and the second radiation component is located in the edge display area; wherein, M <N。 6. The display module according to claim 5, characterized in that: The detection unit includes a first detection unit and a second detection unit, the first radiation component corresponds to at least one of the first detection units, the second radiation component corresponds to at least one of the second detection units, the number of light-emitting devices corresponding to the first detection unit is P, and the number of light-emitting devices corresponding to the second detection unit is Q, wherein P≤Q.

7. The display module according to claim 5, characterized in that: The display module further includes a transition display area between the middle display area and the edge display area; The radiation component further includes a third radiation component, the third radiation component is located in the transition display area, and the number of the light-emitting devices corresponding to the third radiation component is S; wherein, M <S<N。 8. The display module according to claim 7, characterized in that: The detection unit includes a first detection unit, a second detection unit and a third detection unit, the first radiation component corresponds to at least one of the first detection unit, the second radiation component corresponds to at least one of the second detection unit, the third radiation component corresponds to at least one of the third detection unit, the number of light-emitting devices corresponding to the first detection unit is P, the number of light-emitting devices corresponding to the second detection unit is Q, and the number of light-emitting devices corresponding to the third detection unit is T, wherein P≤T≤Q.

9. The display module according to claim 1, characterized in that: The light emitting device comprises a first color light emitting device and a second color light emitting device; The detection unit corresponds to the first color light emitting device, and the wavelength of light emitted by the first color light emitting device is greater than the wavelength of light emitted by the second color light emitting device.

10. The display module according to claim 9, characterized in that: The radiation component includes a fourth radiation component and a fifth radiation component, the fourth radiation component corresponds to the first color light emitting device, and the fourth radiation components have the same area, and the fifth radiation component corresponds to the second color light emitting device, and the fifth radiation components have the same area.

11. The display module according to claim 1, characterized in that: The display module includes a plurality of light-emitting areas and a light-transmitting area located around the light-emitting areas. The light-emitting area includes at least one light-emitting device. The radiation component is located in the light-emitting area.

12. The display module according to claim 1, characterized in that: The orthographic projection of the radiation component on the base substrate covers the orthographic projection of the detection unit on the base substrate.

13. The display module according to claim 1, characterized in that: The detection unit also includes a temperature detection drive device. A plurality of the detection units are arranged in an array. The adjacent detection units along a first direction are connected via scanning signal lines, and the adjacent detection units along a second direction are connected to the temperature detection drive device via data output signal lines, wherein the first direction and the second direction intersect.

14. The display module according to claim 13, characterized in that: The display module includes a plurality of light-emitting areas and light-transmitting areas located around the light-emitting areas. The detection unit is located in the light-emitting areas. The scanning signal lines and the data transmission signal lines are both made of transparent conductive materials.

15. The display module according to claim 13, characterized in that: The display module further includes an array layer and a driving chip connected to the array layer, and the temperature detection driving device is connected to the driving chip via a connecting component.

16. The display module according to claim 15, characterized in that: The connecting component includes a first flexible circuit board connected to the driving chip, a second flexible circuit board connected to the temperature detection driving device, and a connector for connecting the first flexible circuit board with the second flexible circuit board, and a preset distance is spaced between the connector and the substrate along a direction parallel to the plane where the substrate is located; or The connection component includes a flexible circuit board, one end of which is connected to the driving chip, and the other end is connected to the temperature detection driving device. The flexible circuit board is fixed to the base substrate and can be bent toward a side of the base substrate away from the array layer.

17. The display module according to claim 1, characterized in that: The display module further includes a carrying substrate, and the detection unit is located on a side of the carrying substrate away from the base substrate.

18. The display module according to claim 1, characterized in that: The display module further includes a grounding metal film, and the grounding metal film is arranged on a side of the detection unit away from the base substrate.

19. A display device, characterized in that: A display module comprising any one of claims 1-18.

Images