Display module and display device

Abstract

The application provides a display module and a display device. The display module comprises a display panel and a first chip. The display panel comprises a first touch layer, and the first touch layer is provided with a signal output part. The first chip receives a mixed signal transmitted by the first touch layer through the signal output part. In a first detection mode, a recognition module generates a first capacitance signal and a second capacitance signal based on the mixed signal; a data conversion module generates first temperature data and first touch data based on the first capacitance signal and the second capacitance signal, respectively. A data processing module generates global temperature distribution data based on the first temperature data, and the global temperature distribution data represents temperature change conditions corresponding to each region of the display panel. The application utilizes the recognition module of the first chip to recognize and split the mixed signal, which is beneficial to improving the accuracy of the obtained temperature change data and saving chip computing power. The first touch layer is reused for temperature detection, which can reduce the process difficulty and process cost.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display module and display device. Background Technology

[0002] The display performance of a display panel is typically affected by temperature. High temperatures can lead to slow response times, color distortion, or decreased contrast. Furthermore, heat generated during panel operation or abnormal ambient temperatures can cause uneven temperature distribution, further exacerbating these problems. Therefore, the accuracy of temperature detection in different areas of the display panel directly impacts the stability of its display performance.

[0003] Existing panel global temperature monitoring solutions include: Solution 1, deploying a limited number of temperature sensors at the panel edge or in specific areas to simulate local temperature changes and infer the overall temperature distribution of the panel; Solution 2, deploying a large number of temperature sensors across the entire panel to acquire the temperature distribution of the entire panel in real time. However, Solution 1 has a limited detection area, resulting in insufficient simulation accuracy for global temperature changes and poor improvement in uneven temperature distribution. While Solution 2 improves temperature detection accuracy, it also increases the processing requirements for large amounts of temperature data. Existing designs lack mature and systematic statistical solutions for such large amounts of temperature data, leading to high development difficulty and cost. Summary of the Invention

[0004] This application provides a display module and display device to address the problems of limited panel temperature detection accuracy and lack of implementation solutions.

[0005] In view of this, this application provides a display module, including a display panel and a first chip. The display panel includes a first touch layer, and the first touch layer is provided with a signal output section. The first chip receives a mixed signal transmitted by the first touch layer through the signal output section.

[0006] The first chip includes an identification module, a data conversion module, and a data processing module.

[0007] In the first detection mode, the recognition module generates a first capacitance signal and a second capacitance signal based on the mixed signal; the data conversion module generates first temperature data and first touch data based on the first capacitance signal and the second capacitance signal, respectively. The data processing module generates global temperature distribution data based on the first temperature data, which represents the temperature changes in each area of ​​the display panel.

[0008] In some embodiments, in the first detection mode, the identification module performs time-domain analysis and frequency-domain analysis on the mixed signal, and based on the analysis results obtained from the time-domain analysis and frequency-domain analysis, the identification module separates the first capacitance signal and the second capacitance signal from the mixed signal.

[0009] In some embodiments, the display panel further includes a first substrate and a second substrate disposed opposite to each other, wherein the first substrate is located on the side of the second substrate facing the light-emitting surface of the display panel; The first substrate includes an encapsulation layer and a first touch layer, and the second substrate is provided with a light-emitting device. The first touch layer is located on the side of the encapsulation layer away from the second substrate, or the first touch layer is located on the side of the encapsulation layer closer to the second substrate.

[0010] In some embodiments, the display panel further includes a first substrate and a second substrate disposed opposite to each other, wherein the first substrate is located on the side of the second substrate facing the light-emitting surface of the display panel; The first substrate includes an encapsulation layer, and the second substrate includes a first touch layer and a display substrate, with light-emitting devices disposed on the display substrate; The first touch layer is located on the side of the display substrate away from the encapsulation layer, or the first touch layer is located on the side of the display substrate closer to the encapsulation layer.

[0011] In some embodiments, the display panel further includes an isolation shielding layer located on the side of the first touch layer facing the touch surface of the display panel; In the second detection mode, the data conversion module generates first temperature data based on the mixed signal; the data processing module generates global temperature distribution data based on the first temperature data.

[0012] In some embodiments, the isolation shielding layer includes shielding traces, which are arranged in a mesh structure and receive a constant voltage signal.

[0013] In some embodiments, the isolation shielding layer includes shielding traces, which are in a mesh structure; During the temperature detection phase, the shielded traces receive a constant voltage signal; during the touch detection phase, the shielded traces do not receive electrical signals.

[0014] In some embodiments, the duration of the temperature detection phase is shorter than the duration of the touch detection phase.

[0015] In some embodiments, during the display of a frame, the number of temperature detection phases is greater than the number of touch detection phases.

[0016] Secondly, based on the same inventive concept, this application also provides a display device, including the above-mentioned display module.

[0017] Compared with the prior art, the display module and display device provided by the present invention achieve at least the following beneficial effects: In this application, the recognition module of the first chip is used to split the mixed signal to obtain a first capacitance signal that directly reflects the temperature change of the display panel. Further processing of the first capacitance signal improves the accuracy of the acquired temperature change data. Furthermore, compared to directly processing the mixed signal, processing only the first capacitance signal saves chip computing power. On the other hand, this embodiment reuses the first touch layer as a temperature sensing structure, eliminating the need for an additional temperature sensor, thus reducing manufacturing complexity and cost. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This application provides a schematic diagram of a partial structure of a display module. Figure 2 for Figure 1 The diagram shows a partial distribution of the film layer structure of the display panel. Figure 3 This is a schematic diagram of part of the processing of mixed signals by the first chip in the first detection mode; Figure 4 A schematic diagram illustrating the principle by which the recognition module identifies and distinguishes mixed signals; Figure 5 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 6 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 7 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 8 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 9 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 10 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 11 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 12This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 13 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 14 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 15 This is a schematic diagram showing the distribution of some film layers in the display panel of this application; Figure 16 This is a top view of a portion of the structure of the isolation shielding layer in this application; Figure 17 This is a schematic diagram of a display device provided in this application. Detailed Implementation

[0020] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0021] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0022] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Figure 1 This is a structural diagram of a partial structure of a display module provided in this application. Figure 2 for Figure 1 The diagram shows a partial distribution of the film layer structure of the display panel. For ease of understanding, Figure 2 The diagram only illustrates the film layer structure of the display panel, including the first touch layer, the encapsulation layer, and the second substrate.

[0025] In response to the above problems, such as Figure 1As shown, this application provides a display module 10, which includes a display panel 01 and a first chip 02. The display panel 01 can receive electrical signals output by the first chip 02 and display them according to the electrical signals. The first chip 02 can also receive and process the electrical signals fed back by the display panel 01.

[0026] Combination Figure 1 and Figure 2 The display panel 01 includes a first touch layer 011, which has a signal output section 11a. The first touch layer 011 can be a metal layer in the display panel 01 that participates in the touch function. When a touch action occurs, the electrical characteristics of the part of the first touch layer 011 corresponding to the location where the touch action occurs can change accordingly (e.g., a change in capacitance). This change in electrical characteristics can be reflected as a change in electrical signal. When the touch function is enabled, the first touch layer 011 can output an electrical signal containing relevant touch data through the signal output section 11a.

[0027] In order to ensure a wide range of touch detection, the first touch layer 011 can be distributed in a large area of ​​the display panel 01 (e.g., covering the entire surface). In this case, the setting of the first touch layer 011 helps to realize the detection of "full-area touch behavior" of the display panel 01.

[0028] It is important to note that, in addition to the aforementioned touch behavior, temperature changes can also cause changes in some electrical characteristics of the first touch layer 011 (such as changes in capacitance). This means that temperature changes can also be reflected in the electrical signal data generated by the first touch layer 011. Therefore, the temperature changes of the display panel 01 can be analyzed based on the electrical signals generated by the first touch layer 011. Specifically, it is known that the basis for the first touch layer 011 to participate in the touch function is that the parasitic capacitance C corresponding to the first touch layer 011 can change due to touch behavior. Correspondingly, the temperature change of the display panel 01 can also affect the dielectric constant value corresponding to the parasitic capacitance C of the first touch layer 011, thereby causing changes in the parasitic capacitance C (for details, please refer to the capacitance value calculation formula for analysis).

[0029] The first chip 02 receives the mixed signal transmitted by the first touch layer 011 through the signal output unit 11a. Based on the above, it can be clarified that the mixed signal transmitted by the first touch layer 011 may include an electrical signal reflecting the location of the touch action and an electrical signal reflecting the temperature changes in different areas of the display panel 01. By analyzing these two types of electrical signals, the touch status and temperature changes of the display panel 01 can be obtained. Therefore, by having the first chip 02 receive the aforementioned mixed signal, it can analyze the mixed signal to obtain relevant data reflecting the temperature changes in various areas of the display panel 01.

[0030] like Figure 1 As shown, the first chip 02 includes an identification module 021, a data conversion module 022, and a data processing module 023.

[0031] Figure 3 This is a schematic diagram of part of the processing of mixed signals by the first chip in the first detection mode.

[0032] Combination Figure 1 and Figure 3 In the first detection mode, the identification module 021 generates a first capacitance signal and a second capacitance signal based on the mixed signal. Based on the electrical signal characteristics generated by the first touch layer 011, it can be known that the mixed signal contains an electrical signal reflecting touch behavior (the first capacitance signal) and an electrical signal reflecting temperature changes (the second capacitance signal). Therefore, it is difficult to know the temperature changes of the panel by directly performing data conversion and processing on the mixed signal (because the amount of data contained in the mixed signal is quite complex). It is necessary to identify and decompose the mixed signal before data conversion and processing to obtain the electrical signal that directly reflects temperature changes (the second capacitance signal) for further processing.

[0033] The data conversion module 022 generates first temperature data and first touch data based on the first capacitance signal and the second capacitance signal, respectively. The first capacitance signal can reflect the change in capacitance value of the first touch layer 011 caused by temperature changes, so the data conversion module 022 can generate first temperature data reflecting the panel temperature change based on the first capacitance signal; the second capacitance signal can reflect the change in capacitance value of the first touch layer 011 caused by touch behavior, so the data conversion module 022 can generate first touch data reflecting the panel touch detection result based on the second capacitance signal.

[0034] The data processing module 023 generates global temperature distribution data based on the first temperature data. The global temperature distribution data represents the temperature changes corresponding to each area of ​​the display panel 01. The data processing module 023 can integrate and transform the first temperature data, establish a mapping relationship between the first temperature data and data reflecting the location of different areas on the display panel 01, and further generate global temperature distribution data to obtain the temperature changes corresponding to each area on the display panel 01.

[0035] In this embodiment, the identification module 021 of the first chip 02 is used to split the mixed signal to obtain a first capacitance signal that directly reflects the temperature change of the display panel 01. Further processing of the first capacitance signal improves the accuracy of the acquired temperature change data. Furthermore, compared to directly processing the mixed signal, processing only the first capacitance signal saves chip computing power. On the other hand, this embodiment reuses the first touch layer 011 as a temperature sensing structure, eliminating the need for an additional temperature sensor, thus reducing manufacturing complexity and cost.

[0036] Combination Figure 1 and Figure 3 The data processing module 023 can also generate global touch position distribution data based on the first touch data. The global touch position distribution data can reflect the specific location of the touch on the display panel 01. The data processing module 023 can integrate and transform the first touch data, establish a mapping relationship between the first touch data and data reflecting the location of different areas on the display panel 01, and further generate global touch distribution data to determine the location of the area on the display panel 01 where the touch behavior occurred.

[0037] Figure 4 This is a schematic diagram illustrating the principle by which the recognition module identifies and distinguishes mixed signals.

[0038] In some embodiments of this application, such as Figure 4 As shown, in the first detection mode, the identification module 021 performs time-domain analysis and frequency-domain analysis on the mixed signal. Based on the analysis results obtained from the time-domain analysis and frequency-domain analysis, the identification module 021 separates the first capacitance signal and the second capacitance signal from the mixed signal.

[0039] Specifically, the impact of panel temperature changes on the electrical characteristics (e.g., capacitance) of the first touch layer 011 differs from the impact of touch behavior on the electrical characteristics (e.g., capacitance) of the first touch layer 011. Specifically, this difference can be reflected in aspects such as the amplitude and frequency of the electrical signal. Therefore, the recognition module 021 can perform time-domain analysis (analyzing the change in amplitude of the mixed signal over time) and frequency-domain analysis (analyzing the change in amplitude of the mixed signal over frequency) on the mixed signal. The recognition module 021 can then combine the results of these two analyses and, based on the aforementioned differences, decompose the mixed signal into a first capacitance signal and a second capacitance signal. In this embodiment, the above-mentioned analysis design of the recognition module 021 facilitates the targeted acquisition of the first capacitance signal, which reflects changes in panel temperature, thereby improving the accuracy of temperature detection.

[0040] Figure 5 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. For ease of understanding, Figure 5 The diagram only illustrates the film layer structure of the display panel, including the first touch layer, the encapsulation layer, and the second substrate.

[0041] In some embodiments of this application, combined with Figure 2 and Figure 5 The display panel 01 also includes a first substrate 111 and a second substrate 112 disposed opposite to each other. The first substrate 111 is located on the side of the second substrate 112 facing the light-emitting surface 01a of the display panel 01. Specifically, the first substrate 111 may be located on the side of the second substrate 112 facing the first direction X, which can be regarded as the light-emitting direction.

[0042] The first substrate 111 includes an encapsulation layer 012 and a first touch layer 011, and the second substrate 112 is provided with a light-emitting device.

[0043] Among them, such as Figure 2 As shown, the first touch layer 011 is located on the side of the encapsulation layer 012 away from the second substrate 112, or, as... Figure 5 As shown, the first touch layer 011 is located on the side of the encapsulation layer 012 close to the second substrate 112. At this time, the first touch layer 011 can be located on the side of the second substrate 112 facing the light-emitting surface 01a of the panel.

[0044] In this embodiment, the first touch layer 011 and the light-emitting device can be located on different substrates. Combined with the positional feature of the first touch layer 011 located on the light-emitting surface 01a of the second substrate 112, this design facilitates better touch detection performance of the first touch layer 011 while enhancing its sensing effect on the ambient temperature outside the panel, thereby improving temperature detection accuracy. Specifically, with the first touch layer 011 located on the side of the encapsulation layer 012 away from the second substrate 112, its sensing effect on the ambient temperature outside the panel is even better.

[0045] Figure 6 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 7 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. For ease of understanding, Figure 6 and Figure 7 The diagram only illustrates the film layer structure of the display panel, including the first touch layer, encapsulation layer, and display substrate.

[0046] In some embodiments of this application, combined with Figure 6 and Figure 7 The display panel 01 also includes a first substrate 111 and a second substrate 112 disposed opposite to each other. The first substrate 111 is located on the side of the second substrate 112 facing the light-emitting surface 01a of the display panel 01. Specifically, the first substrate 111 may be located on the side of the second substrate 112 facing the first direction X, which can be regarded as the light-emitting direction.

[0047] The first substrate 111 includes an encapsulation layer 012, and the second substrate 112 includes a first touch layer 011 and a display substrate 013, on which a light-emitting device is disposed.

[0048] Among them, such as Figure 6 As shown, the first touch layer 011 is located on the side of the display substrate 113 away from the encapsulation layer 012, or, as... Figure 7 As shown, the first touch layer 011 is located on the side of the display substrate 113 near the encapsulation layer 012.

[0049] In this embodiment, the design of the first touch layer 011, which participates in sensing the temperature change of the display panel 01, being located on the same substrate as the display substrate 113 means that, compared to some other film layers within the display panel 01, the first touch layer 011 is closer to the display substrate 113. Therefore, the heat generated by the light-emitting devices on the display substrate 113 during display is more easily transferred to the first touch layer 011. Consequently, the parasitic capacitance C of the first touch layer 011 is more sensitive to temperature changes caused by heat generation from the display substrate 113. This design further enhances the sensing effect of the first touch layer 011 on the temperature change of the display panel 01, contributing to improved temperature detection accuracy.

[0050] Figure 8 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. For ease of understanding, Figure 8 The diagram only illustrates the film structure of the display panel, including the first touch layer, encapsulation layer, isolation shielding layer, and display substrate.

[0051] In some embodiments of this application, combined with Figure 1 and Figure 8 The display panel 01 also includes an isolation shielding layer 014, which is located on the side of the first touch layer 011 facing the touch surface 01b of the display panel 01. The touch surface 01b can refer to the surface of the display panel 01 that detects touch behavior. Specifically, the isolation shielding layer 014 can be located on the side of the first touch layer 011 facing the first direction X. In this case, the presence of the isolation shielding layer 014 can isolate and block the influence of touch behavior on the electrical characteristics of the first touch layer 011.

[0052] The implementation of the touch function of the display panel 01 can rely on the influence of touch behavior on the electrical characteristics (e.g., parasitic capacitance value) of the first touch layer 011. Similarly, the temperature detection using the first touch layer 011 also relies on the influence of temperature changes on the electrical characteristics (e.g., parasitic capacitance value) of the first touch layer 011. With the isolation shielding layer 014 in place, the aforementioned electrical characteristics of the first touch layer 011 can be considered to be affected only by temperature changes and not by touch behavior. That is, the mixed signal generated by the first touch layer 011 can be considered to reflect only the temperature changes of the display panel 01.

[0053] In the second detection mode, the data conversion module 022 generates first temperature data based on the mixed signal. Considering that the isolation shielding layer 014 shields the influence of touch behavior on the aforementioned electrical characteristics of the first touch layer 011, the data conversion module 022 can directly parse the mixed signal and generate the first temperature data, skipping the step of using the recognition module 021 to identify and separate the mixed signal.

[0054] Data processing module 023 generates global temperature distribution data based on the first temperature data.

[0055] In this embodiment, the isolation shielding layer 014 can pre-screen the contribution of touch behavior to the mixed signal, without the need for the recognition module 021 to parse and split the mixed signal before further data processing, which is equivalent to reducing the signal processing steps. This design helps to save chip computing power and reduce process costs while shielding touch behavior to improve temperature detection accuracy.

[0056] Figure 9This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 10 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 11 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 9 , Figure 10 , Figure 11 The diagram only illustrates the film structure of the display panel, including the first touch layer, encapsulation layer, isolation shielding layer, and display substrate.

[0057] In addition, combined Figure 8 , Figure 9 , Figure 10 and Figure 11 The isolation shielding layer 014 can be located on the side of the first touch layer 011 away from the display substrate 113, that is, the isolation shielding layer 014 can be located on the side of the display substrate 113 facing the light-emitting surface 01a and the touch surface 01b. In this design, the light-emitting surface 01a and the touch surface 01b are located on the same side of the display substrate 113.

[0058] Figure 12 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 13 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 14 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 15 This is a schematic diagram showing the distribution of some film layers in the display panel of this application. Figure 12 , Figure 13 , Figure 14 , Figure 15 The diagram only illustrates the film structure of the display panel, including the first touch layer, encapsulation layer, isolation shielding layer, and display substrate.

[0059] Combination Figure 12 , Figure 13 , Figure 14 and Figure 15 The isolation shielding layer 014 can be located on the side of the display substrate 113 away from the encapsulation layer 012, that is, the isolation shielding layer 014 can be located on the side of the display substrate 113 facing the touch surface 01b (the touch surface 01b can be located on the side of the isolation shielding layer 014 facing the second direction Y). In this design, the light-emitting surface 01a and the touch surface 01b are located on opposite sides of the display substrate 113.

[0060] Figure 16 This is a top view schematic diagram of a portion of the structure of the isolation shielding layer in this application.

[0061] In some embodiments of this application, such as Figure 16As shown, the isolation shielding layer 014 includes shielding traces 14a, which have a mesh-like structure and receive a constant voltage signal. The constant voltage signal received by the shielding traces 14a can be a power supply voltage signal.

[0062] In this embodiment, the influence of touch behavior on the first touch layer 011 can be reflected in the electrical characteristics of the touch object itself (such as the charge it carries or the electric field it possesses), which affect the parasitic capacitance value of the first touch layer 011. The shielded trace 14a, which receives a constant voltage signal, can block the influence of touch behavior on the first touch layer 011. Therefore, this design can serve as the basis for realizing the shielding effect of the isolation shielding layer 014, and the constant voltage signal received by the shielded trace 14a can be multiplexed from some electrical signals (such as power supply voltage signals) within the display panel 01, which helps to reduce the manufacturing difficulty.

[0063] In some embodiments of this application, such as Figure 16 As shown, the isolation shielding layer 014 includes shielding traces 14a, which have a mesh-like structure.

[0064] During the temperature detection phase, shielded trace 14a receives a constant voltage signal, which can be a power supply voltage signal.

[0065] During the touch detection phase, shielded trace 14a does not receive electrical signals.

[0066] In this embodiment, the shielding trace 14a receives a constant voltage signal during the temperature detection phase. This means that the isolation shielding layer 014 can effectively shield touch behavior during the temperature detection phase, thereby improving the accuracy of temperature detection. Furthermore, the shielding trace 14a does not receive electrical signals during the touch detection phase, meaning the isolation shielding layer 014 no longer shields touch behavior during this phase, allowing the touch function of the display panel 01 to be restored. Therefore, the design of this embodiment facilitates time-phased shielding of touch behavior by the isolation shielding layer 014, effectively enabling controllability of turning the shielding function of the isolation shielding layer 014 on or off. This is beneficial for improving the accuracy of temperature detection while retaining both touch and temperature detection functions.

[0067] In some embodiments of this application, the duration of the temperature detection phase is shorter than the duration of the touch detection phase.

[0068] In this embodiment, the temperature change frequency of the display panel 01 is relatively low, meaning that excessive temperature changes are unlikely to occur in a short period of time. Consequently, even if the time for temperature detection of the display panel 01 is reduced, the impact on temperature detection accuracy is unlikely to deteriorate further. Therefore, in this embodiment, the duration of the temperature detection phase is set to be short, which allows for an adaptive extension of the touch detection phase duration while meeting the temperature detection accuracy requirements, thus ensuring optimal touch performance.

[0069] In some embodiments of this application, the number of temperature detection phases is greater than the number of touch detection phases during the display of a frame.

[0070] In this embodiment, based on the low frequency of temperature changes mentioned above, by shortening the duration of the temperature detection phase, the number of temperature detections during the display of one frame can be relatively increased, thereby increasing the temperature detection frequency and making the temperature detection process exhibit short-duration and high-frequency characteristics. This improves the temperature detection accuracy while ensuring touch performance as much as possible.

[0071] Figure 17 This is a schematic diagram of a display device provided in this application.

[0072] This application provides a display device 20, such as... Figure 17 As shown, the display device 20 includes the display module 10 provided in the above embodiments. The display device 20 can be a mobile phone, or it can be an electronic device such as a computer or television.

[0073] In the display device 20 provided in this application embodiment, the temperature detection accuracy of its internal display panel 01 has been greatly improved, and display problems such as slow response speed, color distortion or decreased contrast caused by abnormal temperature during display have been effectively suppressed.

[0074] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, the device embodiments and terminal embodiments are basically similar to the method embodiments, so the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

Claims

1. A display module, characterized in that, The device includes a display panel and a first chip; the display panel includes a first touch layer, and the first touch layer is provided with a signal output section; the first chip receives a mixed signal transmitted by the first touch layer through the signal output section; The first chip includes an identification module, a data conversion module, and a data processing module; In the first detection mode, the identification module generates a first capacitance signal and a second capacitance signal based on the mixed signal; the data conversion module generates a first temperature data and a first touch data based on the first capacitance signal and the second capacitance signal, respectively; the data processing module generates global temperature distribution data based on the first temperature data, and the global temperature distribution data characterizes the temperature change of each area of ​​the display panel.

2. The display module according to claim 1, characterized in that, In the first detection mode, the recognition module performs time-domain analysis and frequency-domain analysis on the mixed signal. Based on the analysis results obtained from the time-domain analysis and the frequency-domain analysis, the recognition module separates the first capacitance signal and the second capacitance signal from the mixed signal.

3. The display module according to claim 1, characterized in that, The display panel further includes a first substrate and a second substrate disposed opposite to each other, wherein the first substrate is located on the side of the second substrate facing the light-emitting surface of the display panel; The first substrate includes an encapsulation layer and a first touch layer, and the second substrate is provided with a light-emitting device; Wherein, the first touch layer is located on the side of the encapsulation layer away from the second substrate, or the first touch layer is located on the side of the encapsulation layer closer to the second substrate.

4. The display module according to claim 1, characterized in that, The display panel further includes a first substrate and a second substrate disposed opposite to each other, wherein the first substrate is located on the side of the second substrate facing the light-emitting surface of the display panel; The first substrate includes an encapsulation layer, and the second substrate includes the first touch layer and a display substrate, wherein a light-emitting device is disposed on the display substrate; The first touch layer is located on the side of the display substrate away from the encapsulation layer, or the first touch layer is located on the side of the display substrate closer to the encapsulation layer.

5. The display module according to claim 1, characterized in that, The display panel further includes an isolation shielding layer, which is located on the side of the first touch layer facing the touch surface of the display panel; In the second detection mode, the data conversion module generates the first temperature data based on the mixed signal; the data processing module generates the global temperature distribution data based on the first temperature data.

6. The display module according to claim 5, characterized in that, The isolation shielding layer includes shielding traces, which have a mesh-like structure and receive a constant voltage signal.

7. The display module according to claim 5, characterized in that, The isolation shielding layer includes shielding traces, which are in a mesh structure. During the temperature detection phase, the shielded trace receives a constant voltage signal; during the touch detection phase, the shielded trace does not receive electrical signals.

8. The display module according to claim 7, characterized in that, The duration of the temperature detection phase is shorter than the duration of the touch detection phase.

9. The display module according to claim 8, characterized in that, During the display of one frame, the number of temperature detection phases is greater than the number of touch detection phases.

10. A display device, characterized in that, Includes the display module as described in any one of claims 1-9.

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