Display device and temperature control method

Abstract

The application provides a display device and a temperature control method. The display device comprises a touch function layer, a control unit and a temperature adjusting unit. The control unit is connected with the touch function layer and the temperature adjusting unit respectively. The touch function layer comprises a plurality of transmission channels arranged in a metal grid structure and a plurality of receiving channels matched with the transmission channels. The touch function layer works in a first working mode and a second working mode in time. The control unit is used for detecting a touch operation of the display device through the transmission channels and the receiving channels in the first working mode. The control unit is also used for detecting a working temperature of the display device through the transmission channels in the second working mode. The resistance value of the transmission channels is related to the working temperature of the display device. The receiving channels are in a non-working state in the second working mode. The control unit is also used for triggering the temperature adjusting unit to adjust the working temperature when the working temperature does not meet a preset temperature threshold. The application can effectively monitor and control the temperature of the display device.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display device and a temperature control method. Background Technology

[0002] With the development of display technology, the application scenarios of display devices are becoming more and more extensive, and at the same time, users' requirements for their performance are constantly increasing. Various high-performance display devices, such as head-up displays (HUDs) and high-brightness displays, are becoming increasingly popular in various industries.

[0003] Temperature is a key factor affecting the performance of display devices, and its stability directly impacts display quality and lifespan. Therefore, effectively monitoring and regulating the temperature of display devices to ensure stable operation is a technical problem that needs to be solved in this field. Summary of the Invention

[0004] This application provides a display device and a temperature control method to achieve temperature monitoring and control of the display device.

[0005] In a first aspect, this application provides a display device, including a touch function layer and a control unit. The touch function layer is connected to the control unit. The touch function layer includes multiple transmitting channels arranged in a metal mesh structure and receiving channels matched with the transmitting channels. The touch function layer operates in a time-division multiplexing manner in a first operating mode and a second operating mode. The control unit is configured to detect touch operations of the display device through the transmitting channels and the receiving channels in the first operating mode, and to detect the operating temperature of the display device through the transmitting channels in the second operating mode. The resistance value of the transmitting channel is correlated with the operating temperature of the display device, and the receiving channel is in a non-operating state in the second operating mode. The display device further includes a temperature adjustment unit, and the control unit is connected to the temperature adjustment unit. The control unit is further configured to trigger the temperature adjustment unit to adjust the operating temperature when the operating temperature does not meet a preset temperature threshold.

[0006] In conjunction with the first aspect, in one possible implementation, the first working mode and the second working mode are activated alternately in a time-sharing manner during one working cycle of the touch function layer.

[0007] In conjunction with the first aspect, in one possible implementation, the transmitting channel includes a first end and a second end, the first end and the second end being respectively connected to the control unit; the control unit is configured to output a DC voltage signal to the first end in the second operating mode, detect a current signal at the second end, and determine the resistance value of the transmitting channel based on the DC voltage signal and the current signal.

[0008] In conjunction with the first aspect, in one possible implementation, the temperature regulation unit includes a heat dissipation system, which includes a heat dissipation module, a first switching circuit, and a power supply; a first terminal of the first switching circuit is connected to the control unit, a second terminal of the first switching circuit is grounded, a third terminal of the first switching circuit is connected to one end of the power supply through the heat dissipation module, and the other end of the power supply is grounded; the control unit is used to output a first control signal when the operating temperature is greater than a first temperature threshold, and the first control signal is used to turn on the first switching circuit.

[0009] In conjunction with the first aspect, in one possible implementation, the display device further includes a display module, which includes a display panel and a backlight module; the touch function layer is located on the light-emitting side of the display device, the display panel is located on the side of the touch function layer away from the light-emitting side, the backlight module is disposed on the side of the display panel away from the touch function layer; and the heat dissipation module is located on the side of the backlight module away from the display panel.

[0010] In conjunction with the first aspect, in one possible implementation, the temperature regulation unit includes: a heating system including a plurality of heating electrodes; and a control unit configured to output a second control signal when the operating temperature is less than a second temperature threshold, the second control signal being used to adjust the driving voltage of the heating electrodes.

[0011] In conjunction with the first aspect, in one possible implementation, the display device further includes a display panel comprising: a color filter substrate, a liquid crystal layer, and a thin-film transistor array substrate. The color filter substrate is disposed close to the touch function layer, the thin-film transistor array substrate is located on the side of the color filter substrate away from the touch function layer, and the liquid crystal layer is located between the color filter substrate and the thin-film transistor array substrate. A plurality of heating electrodes are uniformly disposed on an insulating layer, the insulating layer being located on the side of the color filter substrate close to the liquid crystal layer, and the transmitting channel being located on the side of the color filter substrate away from the liquid crystal layer.

[0012] In conjunction with the first aspect, in one possible implementation, the insulating layer includes multiple heating regions, each heating region corresponding to one heating electrode and multiple transmission channels.

[0013] In conjunction with the first aspect, in one possible implementation, the ratio of the number of heating electrodes to the number of transmitting channels within the heating area is one of 1:2 and 1:3.

[0014] Secondly, this application provides a temperature control method that can be applied to a display device as described in the first aspect or any possible implementation thereof. The method includes: detecting touch operation through a transmitting channel and a receiving channel in a first operating mode; detecting the operating temperature of the display device through the transmitting channel in a second operating mode; and triggering a temperature adjustment unit to adjust the operating temperature when the operating temperature does not meet a preset temperature threshold, wherein the resistance of the transmitting channel is correlated with the operating temperature of the display device; wherein the first operating mode and the second operating mode are alternately activated in a time-sharing manner, and the receiving channel is in a non-operating state in the second operating mode.

[0015] In conjunction with the second aspect, in one possible implementation, triggering the temperature regulation unit to adjust the operating temperature when the operating temperature does not meet the preset temperature threshold includes: triggering the heat dissipation system in the temperature regulation unit when the operating temperature is greater than the first temperature threshold; and triggering the heating system in the temperature regulation unit when the operating temperature is less than the second temperature threshold.

[0016] Thirdly, the present invention provides a temperature control device comprising modules for implementing the method of the second aspect or any implementation thereof, each module being implemented in hardware and / or software.

[0017] The temperature control device can be a touch chip.

[0018] Fourthly, this application provides a computer-readable medium storing program code for execution by a device, the program code including methods for performing as described in the second aspect or any possible implementation thereof.

[0019] Fifthly, this application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method described in the second aspect or any possible implementation thereof.

[0020] The technical solution provided in this application utilizes the temperature drift effect of metal and reuses the metal mesh structure of the transmission channel in the touch function layer to detect the operating temperature of the display device. For example, the operating temperature of the display device can be determined by the resistance value of the transmission channel, thereby achieving temperature measurement of the display device without adding additional materials or processes. Furthermore, by incorporating a temperature regulation system into the display device, the temperature detection function works in conjunction with the temperature regulation system to effectively monitor and control the temperature of the display device. This reduces the probability of liquid crystal polarization or polarizer damage in the display device, thereby improving the performance of the display device. Attached Figure Description

[0021] Figure 1 A schematic structural diagram of a display device provided by the present invention;

[0022] Figure 2 A schematic diagram illustrating the working principle of a heat dissipation system provided in this application; Figure 3 A schematic diagram illustrating the working principle of a heating system provided in this application; Figure 4 A schematic structural diagram of yet another display device provided in this application; Figure 5 A schematic flowchart illustrating a temperature control method provided in this application. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Temperature is a key factor affecting the performance of display devices, and its stability directly impacts display quality and lifespan. For example, head-up displays (HUDs) and high-brightness displays require high brightness and generate significant heat during operation, which can lead to uneven temperature distribution within the display panel, thus affecting display performance. Liquid crystal displays (LCDs) are also sensitive to ambient temperature; abnormal temperatures can cause disordered liquid crystal molecule alignment and degraded response characteristics, ultimately affecting the LCD's display quality. In some embodiments, thermally conductive electrodes are added inside the LCD to heat the display panel when the ambient temperature is low. However, this method suffers from uneven heating, with some areas reaching temperatures exceeding 160°C, which can interfere with the normal alignment and response of liquid crystal molecules. Furthermore, for display devices containing polarizers (POLs), excessively high internal temperatures can damage the polarizer, affecting the normal operation of the display device.

[0025] Therefore, how to effectively monitor and regulate the temperature of display devices and solve problems such as uneven temperature distribution and localized high temperatures within the display panel to ensure stable operation has become a technical problem that needs to be solved in this field.

[0026] In view of this, this application provides a display device and a temperature control method. The technical solution provided in this application utilizes the temperature drift effect of metal and reuses the transmission channel with a metal mesh structure in the touch function layer to detect the operating temperature of the display device. For example, the operating temperature of the display device is determined by the resistance value of the transmission channel, thereby achieving temperature measurement of the display device without adding additional materials or processes. Furthermore, by setting a temperature regulation system in the display device, the temperature detection function works in conjunction with the temperature regulation system to effectively monitor and regulate the temperature of the display device, thereby reducing the probability of liquid crystal polarization or polarizer damage in the display device and improving the display performance.

[0027] The following is combined Figures 1 to 5 This application provides a detailed description of the technical solution provided.

[0028] Figure 1 This is a schematic structural diagram of a display device provided by the present invention. Figure 1 (a) in the figure is a cross-sectional view of the display device. Figure 1 (b) is a top view of the display device.

[0029] like Figure 1 As shown, the display device 100 includes a touch function layer 110 and a control unit 120, with the touch function layer 110 connected to the control unit 120. The touch function layer 110, from the light-incident side to the light-emitting side of the display device 100, sequentially includes a metal 1 (M1) layer, an overcoat layer 1, an M2 layer, and an OC layer 2. The M1 layer includes multiple parallel transmit (TX) channels, and the M2 layer includes multiple receive (RX) channels matched to the transmit channels. It should be understood that the display device 100 has touch functionality.

[0030] like Figure 1 As shown, both the transmitting and receiving channels are arranged in a metal mesh structure. Each transmitting channel has connection points on both sides, as shown in TX1_L to TX3_L and TX1_R to TX3_R. Each receiving channel has connection points on one side, as shown in RX1 to RX3. It can be seen that both the transmitting and receiving channels are connected to the control unit.

[0031] Optionally, the control unit 120 is a touch chip. The connection point between the transmitting channel and the receiving channel can be bonded to a flexible printed circuit (FPC), thereby connecting to the touch chip.

[0032] In this application, the touch function layer 110 can operate in a first working mode and a second working mode in a time-division manner. In some embodiments, the first working mode may also be called the touch reporting detection mode, and the second working mode may also be called the resistance detection mode; this application does not impose specific limitations on this.

[0033] In one possible implementation, the touch function layer 110 operates in a first working mode and a second working mode at different times. This can be understood as the working periods of the first working mode and the second working mode not overlapping. There may or may not be a free interval between the start-up periods of the first working mode and the start-up periods of the second working mode; this application does not specifically limit this.

[0034] In this implementation, the control unit 120 can be used to start and stop the first working mode and the second working mode.

[0035] In one possible implementation, the touch function layer 110 operates in a first working mode and a second working mode in a time-sharing manner. This can be understood as the first working mode and the second working mode being activated alternately in a time-sharing manner within one working cycle of the touch function layer 110. The activation periods of the first working mode and the second working mode do not overlap.

[0036] In this implementation, the start-up time periods of the first working mode and the second working mode can be preset to enable the autonomous start and stop of the first working mode and the second working mode.

[0037] In this application, the control unit 120 is used to detect touch operations of the display device through the transmission channel and the reception channel in the first working mode, so as to realize the touch function of the display device 100.

[0038] The control unit 120 is also used to detect the operating temperature of the display device 100 via the transmission channel in the second operating mode. The resistance value of the transmission channel is correlated with the operating temperature of the display device 100, and the receiving channel is inactive in the second operating mode. The operating temperature of the display device 100 may include the temperature of the display panel or backlight module when the display device 100 is powered on and in normal display operation. It should be noted that the backlight module is located on the light-incident side of the display device 100, and the display panel is located on the light-emitting side of the display device 100. If the display device 100 is an on-cell touch architecture, and the touch function layer 110 is located on the side of the display panel away from the backlight module, then the operating temperature of the display device 100 can be understood as the operating temperature of the display panel. If the display device 100 is an in-cell touch architecture, and the touch function layer 110 is located inside the display panel, then the operating temperature of the display device 100 may be the temperature inside the display panel or the temperature of the backlight module.

[0039] It should be noted that the resistance of the transmission channel is correlated with the operating temperature of the display device 100, including: the resistance of the transmission channel is positively correlated with the operating temperature of the display device 100, or the resistance of the transmission channel is negatively correlated with the operating temperature of the display device 100. This application does not impose specific limitations on this.

[0040] like Figure 1 As shown, the transmission channel includes a first end and a second end, which are respectively connected to the control unit 120. The first end is as follows... Figure 1 The left connection point in the middle, the second end as Figure 1 The right-hand connection point in the diagram.

[0041] The control unit 120 can output a DC voltage signal to the first end of the transmitting channel and detect a current signal at the second end of the transmitting channel in the second operating mode. This allows it to determine the resistance value of the transmitting channel based on the DC voltage and current signals. For example, the control unit 120 can send a DC voltage to TX1_L and detect a current signal at the TX1_R side to determine the resistance value of TX1. If the current signal is small, the control unit 120 can also amplify the current to improve detection accuracy.

[0042] Optionally, multiple transmission channels can be detected independently or simultaneously in parallel; this application does not impose specific restrictions on this.

[0043] It should be understood that to ensure the accuracy of the resistance measurement of the transmitting channel, a metal material with a large temperature coefficient can be used for the transmitting channel. Taking aluminum (Al) as an example, its resistance value is greatly affected by temperature. If aluminum is used as the material of the transmitting channel, the resistance value of the transmitting channel is 10 kΩ when the operating temperature of the display device 100 is 25°C. When the operating temperature of the display device 100 rises to 100°C, the resistance value of the transmitting channel rises to 13.2 kΩ accordingly. Approximating the temperature drift characteristic of aluminum resistance as a linear relationship, the following relationship is satisfied: R2 = R1 {1+a (T2-T1)}. 'a' is the temperature coefficient of resistance, which is 0.00429 / ℃ for aluminum. R1 is the resistance at the first temperature, and R2 is the resistance at the second temperature.

[0044] This invention uses the resistance value of the transmission channel at 25°C as a standard resistance value. By detecting the current resistance value of the transmission channel, the temperature of the current transmission channel can be calculated, thereby determining the current operating temperature of the display device 100. Calculations show that the resistance value of the transmission channel increases by 32% as the temperature rises from 25°C to 100°C.

[0045] In the technical solution provided in this application, the transmission channel of the touch function layer is reused to detect the operating temperature of the display device, thereby achieving the measurement of the display device temperature without adding additional materials and processes. This helps to achieve temperature control of the display device, thereby helping to reduce the probability of liquid crystal polarization or polarizer damage in the display device and improve the performance of the display device.

[0046] It should be noted that this application utilizes the temperature drift effect of metal to detect the resistance of the transmission channel with a metal mesh structure, thereby achieving the measurement of the display device temperature. Therefore, other structural layers with a metal mesh distribution can also be used to measure the display device temperature. For example, a common electrode layer with a metal mesh structure in the display panel can be reused to measure the display device temperature.

[0047] In some embodiments, the display device 100 further includes a temperature regulation unit 130. The control unit 120 is connected to the temperature regulation unit 130.

[0048] The control unit 120 is also used to trigger the temperature adjustment unit 130 to adjust the operating temperature of the display device 100 when the operating temperature of the display device 100 does not meet the preset temperature threshold.

[0049] Optionally, the temperature regulation unit 130 may include a heat dissipation system and / or a heating system. The heat dissipation system can dissipate heat from the display device 100 when its operating temperature exceeds a first temperature threshold, thereby reducing the operating temperature of the display device 100; the heating system can heat the display device 100 when its operating temperature is below a second temperature threshold, thereby increasing the operating temperature of the display device 100.

[0050] Figure 2 A schematic diagram illustrating the working principle of a heat dissipation system is shown. Figure 2 As shown, the heat dissipation system includes a heat dissipation module, a first switching circuit, and a power supply. The first terminal of the first switching circuit is connected to the control unit 120, the second terminal of the first switching circuit is grounded, and the third terminal of the first switching circuit is connected to one end of the power supply through the heat dissipation module; the other end of the power supply is grounded. Figure 2 The first switching circuit is an N-channel metal-oxide-semiconductor field-effect transistor (NMOS). The power supply can be 5 volts (V).

[0051] In some embodiments, the first switching circuit may also be a P-channel metal-oxide-semiconductor field-effect transistor (PMOS) or an insulated gate bipolar transistor (IGBT), and this application does not impose any specific limitations on it.

[0052] like Figure 2 As shown, the control unit 120 can determine the operating temperature of the display device by detecting the resistance values ​​of one or more transmission channels. When the operating temperature exceeds a first temperature threshold, a first control signal is output to the first terminal of the first switching circuit. This first control signal is used to turn on the first switching circuit, thereby triggering the cooling system to start operating and reduce the operating temperature of the display device. The resistance values ​​of the transmission channels are as follows: Figure 2 R in TX The first temperature threshold can be set according to actual needs and is not limited here.

[0053] Optionally, when detecting the resistance values ​​of multiple transmission channels, the operating temperature of the display device can be determined based on the maximum or average value of the detected resistance values. The specific settings can be configured according to actual needs and are not specifically limited here.

[0054] Alternatively, the heat dissipation module can be a fan or a semiconductor heat sink.

[0055] Optionally, the heat dissipation module may be located on the side of the backlight module closest to the light-incident side of the display device 100.

[0056] It should be understood that the display device 100 also includes a liquid crystal module (LCM), which includes a display panel and a backlight module. Taking the display device 100 as an on-cell architecture as an example, the touch function layer 110 is located on the light-emitting side of the display device 100, the display panel is located on the side of the touch function layer 110 away from the light-emitting side of the display device 100, the backlight module is located on the side of the display panel away from the touch function layer 110, and the heat dissipation module is located on the side of the backlight module away from the display panel, thereby reducing the operating temperature of the display device 100 without affecting the light transmittance of the display device 100. Taking the display device 100 as an in-cell architecture as an example, the touch function layer 110 is integrated into the display panel, and the heat dissipation module can also be located on the side of the backlight module away from the display panel.

[0057] Figure 2The described technical solution can be applied to display devices with high brightness requirements, such as HUDs and high-brightness display modules. In these devices, the backlight module consumes a significant amount of power, resulting in a high operating temperature. To control the backlight module's operating temperature below the liquid crystal's polarization temperature, the resistance value of the transmitting channel in the touch function layer 110 can be detected. Based on this resistance value and the resistance value at the standard operating temperature, the current operating temperature of the display device can be determined. If the current operating temperature of the display device 100 is greater than or equal to the liquid crystal's polarization temperature, the control unit 120 can output a first control signal to the first switching circuit to activate the heat dissipation module and reduce the module temperature. For example, in an on-cell architecture where the transmitting channel is made of aluminum and the liquid crystal's polarization temperature is 105°C and the standard operating temperature is 25°C, based on the resistance temperature drift characteristics of aluminum, when the detected resistance of the transmitting channel is 1.34 times the resistance value at the standard operating temperature, the current operating temperature of the display device can be considered to be greater than 105°C.

[0058] Optionally, when the control unit 120 is a touch chip, the fault detection pin of the touch chip can be connected to the first terminal of the first switching circuit. If the current operating temperature of the display device 100 is greater than or equal to the polarization temperature of the liquid crystal, the fault detection pin of the touch chip can output a high-level signal to turn on the first switching circuit, thereby triggering the start of the heat dissipation system.

[0059] Figure 3 A schematic diagram illustrating the working principle of a heating system is shown. Figure 3 As shown, the heating system includes: a heating electrode, a second switching circuit, a power supply, and an adjustment module. The first terminal of the second switching circuit is connected to the adjustment module, the second terminal of the second switching circuit is grounded, and the third terminal of the second switching circuit is connected to one end of the power supply via the heating electrode. The other end of the power supply is grounded. The adjustment module is also connected to the control unit 120. Figure 3 The second switching circuit is an NMOS. The power supply can be 7V. In some embodiments, the second switching circuit can also be a PMOS or an IGBT, and this application does not impose specific limitations on this.

[0060] like Figure 3As shown, the control unit 120 can determine the operating temperature of the display device 100 by detecting the resistance value of the transmission channel. When the operating temperature is lower than a second temperature threshold, a second control signal is output to the first terminal of the second switching circuit. The second control signal is used to instruct the adjustment module to adjust the driving voltage of the heating electrode to increase the operating temperature of the display device. For example, the adjustment module can adjust the driving voltage of the heating electrode by adjusting the duty cycle of the second switching circuit, or the adjustment module can control the conduction time of the second switching circuit by adjusting the duty cycle of the pulse width modulation (PWM) signal output to the second switching circuit, thereby adjusting the driving voltage of the heating electrode. The second temperature threshold can be set according to actual needs, and this application does not impose specific limitations on it. The adjustment module and the control unit 120 can communicate via an inter-integrated circuit (I2C) bus.

[0061] In this application, the heating electrode can be disposed within the display panel of the display device.

[0062] Figure 4 A schematic structural diagram of a display device is shown. Figure 4 The example of a display device using an on-cell architecture is provided for illustration and is not intended to limit the technical solution of this application.

[0063] like Figure 4 As shown, the display panel in the display device 100 includes a color filter (CF) substrate, a liquid crystal layer, and a thin film transistor (TFT) array substrate. The color filter substrate is disposed close to the touch function layer 110, the thin film transistor array substrate is located on the side of the color filter substrate away from the touch function layer 110, and the liquid crystal layer is located between the color filter substrate and the thin film transistor array substrate. Figure 4 The number of heating electrodes is two only as an example and is not intended to limit the technical solution of this application.

[0064] It can be seen that multiple heating electrodes are evenly distributed on an insulating layer, such as... Figure 4 The indium tin oxide (ITO) layer is located in the color filter substrate. The insulating layer is located on the side of the color filter substrate closest to the liquid crystal layer, and the transmission channel is located on the side of the color filter substrate furthest from the liquid crystal layer.

[0065] In this application, the insulating layer can be divided into multiple heating regions, and each heating region can correspond to a heating electrode and multiple transmission channels. Figure 4The middle insulating layer is divided into two heating regions. The first heating region corresponds to heating electrode 1, transmission channel 1, and transmission channel 2, while the second heating region corresponds to heating electrode 2, transmission channel 3, and transmission channel 4. It should be noted that... Figure 4 The ratio of heating electrodes to transmission channels in the heating area is 1:2, which is merely an example and is not intended to limit the technical solution of this application.

[0066] In some embodiments, the ratio of heating electrodes to transmission channels within the heating area can be 1:3.

[0067] Optionally, the display device 100 may further include a polarizing layer, such as Figure 4 The POL1 and POL2 layers are used to protect the display device 100.

[0068] Figure 3 and Figure 4 The described technical solution can be applied to in-cell heating scenarios for LCDs. The temperature of the heating area is determined by detecting the resistance of the transmission channel corresponding to the heating area, and when the temperature of the heating area is lower than a second temperature threshold, the driving voltage of the corresponding heating electrode is changed to heat the area.

[0069] It should be noted that, Figure 4 The described technical solution is primarily applicable to On-cell architectures. In In-cell architectures, interference may occur between the touch function layer 110 and the heating electrode, thereby affecting the performance of the display device.

[0070] It should be understood that in some embodiments, a heating system and a heat dissipation system can be provided simultaneously, and the temperature regulation performance of the display device can be improved by configuring the heating system, the heat dissipation system and temperature detection.

[0071] The present invention also provides a temperature control method. This temperature control method can be applied to the display device described in the foregoing embodiments.

[0072] Figure 5 A schematic flowchart illustrating a temperature control method provided in this application. Figure 5 As shown, the method includes S510 and S520.

[0073] Optionally, the method may be executed by the control unit or by other hardware and / or software modules in the display device, without specific limitations.

[0074] In the first operating mode, the S510 detects touch operations through the transmit and receive channels.

[0075] S520, in the second working mode, detects the operating temperature of the display device through the transmission channel, and triggers the temperature adjustment unit to adjust the operating temperature when the operating temperature does not meet the preset temperature threshold. The resistance value of the transmission channel is correlated with the operating temperature of the display device.

[0076] In this application, the first working mode and the second working mode are the working modes of the touch function layer. The first working mode and the second working mode can be activated alternately in a time-sharing manner, and the receiving channel is in a non-working state in the second working mode.

[0077] The temperature regulation unit may include a heat dissipation system and / or a heating system. When the operating temperature of the display device exceeds a first temperature threshold, the heat dissipation system in the temperature regulation unit can be triggered to lower the operating temperature of the display device; when the operating temperature of the display device is below a second temperature threshold, the heating system in the temperature regulation unit can be triggered to raise the operating temperature of the display device. For details, please refer to the relevant descriptions in the foregoing embodiments, which will not be repeated here.

[0078] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0079] In the description of this invention, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0080] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described above can be combined with each other as long as they do not conflict with each other.

[0081] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A display device comprising a touch function layer and a control unit, the touch function layer being connected to the control unit, the touch function layer comprising multiple transmitting channels arranged in a metal mesh structure and receiving channels matching the transmitting channels, characterized in that, The display device further includes a temperature adjustment unit, and the control unit is connected to the temperature adjustment unit; The touch function layer operates in a time-division multiplexing manner, in a first working mode and a second working mode. The control unit is configured to detect touch operations of the display device through the transmitting channel and the receiving channel in the first operating mode, and to detect the operating temperature of the display device through the transmitting channel in the second operating mode. The resistance of the transmitting channel is correlated with the operating temperature of the display device, and the receiving channel is in a non-operating state in the second operating mode. The control unit is also configured to trigger the temperature adjustment unit to adjust the operating temperature when the operating temperature does not meet the preset temperature threshold.

2. The display device according to claim 1, characterized in that, During one working cycle of the touch function layer, the first working mode and the second working mode are activated alternately in a time-sharing manner.

3. The display device according to claim 1, characterized in that, The transmission channel includes a first end and a second end, and the first end and the second end are respectively connected to the control unit; The control unit is configured to output a DC voltage signal to the first terminal in the second operating mode, detect the current signal at the second terminal, and determine the resistance value of the transmitting channel based on the DC voltage signal and the current signal.

4. The display device according to claim 1, characterized in that, The temperature regulation unit includes a heat dissipation system, which includes a heat dissipation module, a first switching circuit, and a power supply. The first terminal of the first switching circuit is connected to the control unit, the second terminal of the first switching circuit is grounded, the third terminal of the first switching circuit is connected to one end of the power supply through the heat dissipation module, and the other end of the power supply is grounded. The control unit is configured to output a first control signal when the operating temperature is greater than a first temperature threshold, and the first control signal is configured to turn on the first switching circuit.

5. The display device according to claim 4, characterized in that, It also includes a display module, which comprises a display panel and a backlight module; The touch function layer is located on the light-emitting side of the display device, the display panel is located on the side of the touch function layer away from the light-emitting side, and the backlight module is disposed on the side of the display panel away from the touch function layer. The heat dissipation module is located on the side of the backlight module away from the display panel.

6. The display device according to claim 1, characterized in that, The temperature control unit includes a heating system, which includes multiple heating electrodes. The control unit is configured to output a second control signal when the operating temperature is less than a second temperature threshold, the second control signal being used to adjust the driving voltage of the heating electrode.

7. The display device according to claim 6, characterized in that, It also includes a display panel, which comprises: a color filter substrate, a liquid crystal layer and a thin film transistor array substrate, wherein the color filter substrate is disposed close to the touch function layer, the thin film transistor array substrate is located on the side of the color filter substrate away from the touch function layer, and the liquid crystal layer is located between the color filter substrate and the thin film transistor array substrate; The heating electrodes are evenly distributed on an insulating layer, which is located on the side of the color filter substrate closer to the liquid crystal layer, and the transmitting channel is located on the side of the color filter substrate away from the liquid crystal layer.

8. The display device according to claim 7, characterized in that, The insulating layer includes multiple heating regions, each heating region corresponding to a heating electrode and multiple transmission channels.

9. The display device according to claim 8, characterized in that, The ratio of the number of heating electrodes to the number of transmitting channels within the heating area is one of 1:2 and 1:

3.

10. A temperature control method, characterized in that, Applied in a display device as described in any one of claims 1 to 9, the method comprises: In the first operating mode, touch operations are detected through the transmitting and receiving channels; In the second working mode, the operating temperature of the display device is detected through the transmission channel, and the temperature adjustment unit is triggered to adjust the operating temperature when the operating temperature does not meet the preset temperature threshold. The resistance value of the transmission channel is correlated with the operating temperature of the display device. The first working mode and the second working mode are started alternately in a time-sharing manner, and the receiving channel is in a non-working state in the second working mode.

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