Self-adaptive temperature control capacitive touch display screen

Abstract

The application relates to the technical field of touch display, and aims to provide a self-adaptive temperature control capacitive touch display screen, which comprises a capacitive touch module and a display module which is arranged on the back of the capacitive touch module in a laminated mode, the back of the display module constitutes a mounting area for mounting equipment elements; a heat-conducting metal frame is arranged on the edge of the front of the capacitive touch module; and a heat pipe is further arranged, the capacitive touch module can conduct working heat to the front of the capacitive touch module through the heat pipe to heat the capacitive touch module, so that the surface temperature of the capacitive touch module is higher than the ambient dew point temperature. The application can directly utilize the working heat of the display module or the equipment elements to heat the capacitive touch module, improves the heat dissipation performance of the equipment, and reduces the risk of false touch control and touch failure caused by condensation on the surface of the capacitive touch module.

Description

Technical Field

[0001] This invention relates to the field of touch display technology, and more specifically to an adaptive temperature-controlled capacitive touch display screen. Background Technology

[0002] Capacitive touch displays are devices that enable touch control by detecting changes in the capacitance of the screen surface. Utilizing the conductivity of the human body, a finger touches the screen, changing the capacitance value of the electrode array. The controller then locates the touch position and sends feedback to the display module for display. They offer advantages such as high light transmittance, fast response, and support for multi-touch. However, their stability during use is easily affected by ambient temperature differences. Surface vapor or liquid condensation can cause capacitor drift, leading to touch deviations.

[0003] When the ambient temperature changes, the temperature difference between the capacitive touchscreen surface and the surrounding air causes water vapor to condense. For example, in low-temperature environments, the screen temperature is below the dew point temperature, and water vapor in the air condenses into tiny droplets on the screen surface. The condensation phenomenon is even more pronounced when moving from a low-temperature environment to a high-temperature environment (such as moving from outdoors to indoors in winter). These condensed droplets alter the dielectric constant of the capacitive touchscreen—which detects touch input by sensing changes in the capacitance of its electrode array. The droplets form an "extra capacitor layer" on the screen surface, disrupting the original electric field distribution and causing touch signal drift. In high-humidity environments, continuous condensation can lead to the formation of a water film on the screen surface. The conductivity of water can cause weak leakage current between electrodes, resulting in misjudgments of multi-touch or misalignment of single-touch positions. In low-temperature environments, the condensed droplets freeze into ice, not only altering the capacitance characteristics but also potentially reducing touch sensitivity due to the physical hardness of the ice.

[0004] This condensation problem caused by temperature differences is particularly prominent in automotive settings (where there are large temperature differences between winter and summer), outdoor devices (where there are significant temperature differences between day and night), and humid environments (such as bathrooms and kitchens). Experimental data shows that when the ambient humidity exceeds 60% and the temperature difference exceeds 5°C, the touch deviation rate of capacitive screens can reach over 15%, and in severe cases, touch malfunction may even occur, posing a significant risk to devices that rely on precise operation. Although existing technologies utilize hydrophobic layers, physical structural defects still make it difficult to fundamentally improve the stability of capacitive screens under extreme temperature conditions. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive temperature-controlled capacitive touch screen that can significantly improve the situation of accidental touch and touch failure when the temperature difference changes through automatic temperature regulation.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is: an adaptive temperature-controlled capacitive touch display screen, comprising a capacitive touch module and a display module stacked on the back of the capacitive touch module, wherein the back of the display module constitutes a mounting area for mounting device components;

[0007] The capacitive touch module has a thermally conductive metal frame along its front edge. It also includes a heat pipe with a first fin and a second fin. The first fin is thermally coupled to the thermally conductive metal frame, and the second fin is thermally coupled to the heat dissipation surface of the display module and / or the heat dissipation surface of high-heat-generating device components within the mounting area to absorb operating heat. The capacitive touch module can conduct operating heat to its front surface via the heat pipe, heating the module and ensuring its surface temperature is higher than the ambient dew point temperature.

[0008] Preferably, a graphene layer is vapor-deposited on the front side of the capacitive touch module, and the thermally conductive metal frame forms a thermal coupling with the capacitive touch module through the graphene layer, and the heat is evenly distributed to the entire surface of the capacitive touch module through the graphene layer.

[0009] Preferably, a layer of silicon dioxide anti-scratch and wear-resistant layer is deposited on the outside of the graphene layer.

[0010] Preferably, it also includes an ambient temperature and humidity sensor for detecting ambient temperature and humidity, and a capacitive touch screen temperature sensor for detecting the surface temperature of the capacitive touch module.

[0011] The heat pipe is also provided with a third fin, which forms a thermal coupling with the heat spreader back plate of the device; a heat dissipation switching module is provided inside the heat pipe, which can switch the heat conduction state of the first fin, the second fin, and the third fin on the heat pipe, so that a heat dissipation channel is formed between the first fin and the second fin to achieve front heat dissipation or a heat dissipation channel is formed between the second fin and the third fin to achieve back heat dissipation.

[0012] The heat dissipation switching module, the ambient temperature and humidity sensor, and the capacitive touchscreen temperature sensor are all connected to the control unit, and the heat dissipation switching module is controlled by the control unit.

[0013] Preferably, the thermally conductive metal frame is further provided with an electric auxiliary heating unit for heating the thermally conductive metal frame.

[0014] Preferably, the heat pipe includes a hollow main body disposed on one side of the capacitive touch module, and a phase change medium inside the main body; a first fin, a second fin, and a third fin are disposed on one side of the main body and communicate with the main body; a capillary adsorption layer is formed on the inner wall of the main body, the first fin, the second fin, and the third fin, and the capillary adsorption layer is used to adsorb and return the liquid phase change medium condensed at the first fin and the third fin to the second fin through capillary action.

[0015] Preferably, the capillary adsorption force of the capillary adsorption layer at the second fin is higher than that at the main body, the first fin, and the third fin.

[0016] Preferably, the positions of the capacitive touch module and the display module are opposite to the positions between the first fin and the second fin, and the position of the mounting area is opposite to the positions between the second fin and the third fin.

[0017] Preferably, the heat dissipation switching module includes a lifting frame adapted to the main body and disposed within the main body. The lifting frame has two connecting holes at its upper and lower parts facing the capacitive touch module. A fixed magnet is disposed on the other side of the lifting frame, and a driving magnet cooperating with the fixed magnet is disposed on the outer side of the main body. The heat dissipation switching module uses the lifting of the driving magnet to drive the fixed magnet and the lifting frame to move up and down within the main body, thereby changing the correspondence between the two connecting holes and the first fin, the second fin, and the third fin.

[0018] Preferably, the heat dissipation switching module includes a flap with an obtuse V-shaped cross-section disposed within the main body, and fixed magnets are disposed on the back of both sides of the flap; two electromagnets that cooperate with the fixed magnets are disposed on the upper and lower sides of the outer side wall of the main body; the heat dissipation switching module drives the flap to swing within the main body by the alternating attraction of the fixed magnets by the electromagnets, so as to change the positional relationship between the flap and the first fin, the second fin and the third fin.

[0019] Preferably, the corner of the flap is provided with an arc-shaped part, and the side wall of the main body is provided with a groove that matches the arc-shaped part.

[0020] The beneficial effects of this invention are mainly reflected in its ability to directly utilize the working heat of the display module or device components to heat the capacitive touch module. This improves the heat dissipation performance of the device while reducing the risk of accidental touches and touch failures caused by condensation on the surface of the capacitive touch module. Specifically, during operation, the second fin absorbs the working heat of the device and directly transfers it to the heat-conducting metal frame through the heat pipe and the first fin. This allows the heat-conducting metal frame to quickly raise the temperature of the capacitive touch module, keeping it above the ambient dew point temperature. This avoids the risks of touch drift, accidental touches, and touch failures caused by excessive condensation on the surface of the capacitive touch module when the ambient temperature and humidity change. This invention can be applied in everyday life scenarios such as automotive touchscreens and mobile phones / tablets, as well as industrial touchscreen scenarios with significant temperature and humidity variations, ensuring the normal operation of the touch display screen and reducing various usage risks. Attached Figure Description

[0021] Figure 1 This is a block diagram of the electronic control system of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention;

[0023] Figure 3 for Figure 2 The structure shown is viewed from direction AA.

[0024] Figure 4 for Figure 3 Enlarged view of section B;

[0025] Figure 5 for Figure 4 The diagram shows a usage state of the structure shown.

[0026] Figure 6 This is a schematic diagram of the lifting frame structure;

[0027] Figure 7 for Figure 4 A schematic diagram of another heat dissipation switching module shown in the figure;

[0028] Figure 8 for Figure 4 The diagram shows a usage state of the structure shown.

[0029] Figure 9 This is a schematic diagram of the flap structure in a preferred embodiment. Detailed Implementation

[0030] Combination Figure 1-3As shown, this invention is an adaptive temperature-controlled capacitive touch display screen. Similar to traditional touch displays, it includes a capacitive touch module 1 and a display module 2 stacked on the back of the capacitive touch module 1. The back of the display module 2 forms a mounting area 3 for mounting device components. The capacitive touch module 1 is a commercially available conventional capacitive touch screen, which can be made of single-layer ITO glass (indium tin oxide glass) or double-layer ITO glass depending on actual needs. The display module 2 is located on the back of the capacitive touch module 1, and common examples include LED displays and LCD displays. The capacitive touch module 1 and display module 2 are generally laminated using OCA (optical transparent adhesive). The mounting area 3 mounts corresponding device components according to the device's functional requirements, such as touch chips, display driver chips, power management chips, etc.

[0031] The biggest difference in this invention is that, as Figure 2 As shown, a thermally conductive metal frame 4 is provided on the edge of the front side of the capacitive touch module 1. The thermally conductive metal frame 4 is made of high thermal conductivity materials such as copper or copper alloys. It is frame-shaped and can be encapsulated within the outermost shell (not shown in the figure, i.e., various plastic or metal frames), without affecting the normal display of the display module 2. The thermally conductive metal frame 4 is composited on the edge of the front side of the capacitive touch module 1, and its main function is to evenly conduct heat from the heat source to various positions on the surface of the capacitive touch module 1. To further ensure the stability of its heat distribution, such as... Figure 3 and 4 As shown, the present invention typically also deposits a 10-20 nm thick graphene layer 8 on the front side of the capacitive touch module 1 via vapor deposition. The thermally conductive metal frame 4 forms a thermal coupling with the capacitive touch module 1 through the close contact of the graphene layer 8, and the heat is evenly distributed to the entire surface of the capacitive touch module 1 through the graphene layer 8. Of course, in order to prevent the increase in interface thermal resistance caused by the tiny gap between the thermally conductive metal frame 4 and the graphene layer 8, a thermally conductive grease with high thermal conductivity can be appropriately filled between the thermally conductive metal frame 4 and the graphene layer 8 to improve the stability of heat conduction.

[0032] The overall heat conduction path is as follows: heat source, thermally conductive metal frame 4, graphene layer 8, and surface of capacitive touch module 1. Since control is achieved through repeated touch during use, a silicon dioxide scratch-resistant and wear-resistant layer 9 can be vapor-deposited on the outside of the graphene layer 8 to protect it. The overall thickness of the graphene layer 8 plus the silicon dioxide scratch-resistant and wear-resistant layer 9 should be less than the touch contact gap of the capacitive touch module 1 to avoid affecting its normal function.

[0033] The heat source used in this invention to heat the capacitive touch module 1 is primarily selected from the device's own heat source. This reduces heating power consumption and also serves as an auxiliary heat dissipation method to cool the device. Examples of heat sources from the device itself include: the heat dissipation surface corresponding to the backlight layer of the display module 2 (usually the back of the display module 2, i.e., the heat sink). Figure 4 The lower surface of the display module 2 can also be some high-heat-generating device components (usually various chips or chipsets).

[0034] In order to stably transfer heat from the heat source to the heat-conducting metal frame 4, combined with Figure 3 and 4 As shown, the present invention also includes a heat pipe 7, on which a first fin 5 and a second fin 6 are disposed. The first fin 5 forms a thermal coupling with the thermally conductive metal frame 4, and the second fin 6 forms a thermal coupling with the heat dissipation surface of the display module 2 and / or the heat dissipation surface of the high-heat-generating device components in the mounting area 3, so as to absorb working heat. The capacitive touch module 1 can conduct working heat to the front surface of the capacitive touch module 1 through the heat pipe 7 to heat the capacitive touch module 1, so that the surface temperature of the capacitive touch module 1 is higher than the ambient dew point temperature, thereby preventing water vapor from condensing on the surface of the capacitive touch module 1. The shapes of the first fin 5 and the second fin 6 are designed according to the shape of the heat dissipation surface of the display module 2 and the heat dissipation surface of the device components that dissipate working heat, and can be elongated, curved, circular, etc. The shapes shown in the figure are only schematic representations and do not constitute a limitation on the scope of protection of the present invention.

[0035] The working heat from the functional device components of this invention can basically cover the usage requirements in most low-temperature or low-humidity environments. However, for some high-humidity and high-temperature-difference scenarios, rapid heating can be achieved through electric auxiliary heating. For example, the heat-conducting metal frame 4 is also embedded with an electric auxiliary heating unit 14 (heating wire, heating tube, etc.) for heating the heat-conducting metal frame 4. When the working heat cannot meet the heating requirements, the capacitive touch module 1 can be heated by the intervention of the electric auxiliary heating unit 14.

[0036] While this invention utilizes the operating heat of the device as a heat source to heat the capacitive touch module 1, thus preventing condensation, the high temperature of the capacitive touch module 1, which is crucial for frequently used devices (such as mobile phones and tablets), can negatively impact user experience and functionality of both the touch module 1 and the display module 2 if front-side heat dissipation is used for extended periods. Therefore, a better approach is to incorporate a selective heat dissipation mechanism, combining front-side and traditional back-side heat dissipation to select the appropriate method based on the specific conditions. In other words, this invention allows for front-side heat dissipation when the temperature of the capacitive touch module 1 is below the ambient dew point temperature, while maintaining back-side heat dissipation when the temperature exceeds the ambient dew point temperature (where condensation is unlikely).

[0037] To achieve the above functions, the present invention also includes an ambient temperature and humidity sensor 10 for detecting ambient temperature and humidity, and a capacitive screen temperature sensor 11 for detecting the surface temperature of the capacitive touch module 1. Both the ambient temperature and humidity sensor 10 and the capacitive screen temperature sensor 11 are connected to the control unit. The control unit generally does not need to be set up separately and can directly use the device's own controller.

[0038] The heat pipe 7 is further provided with a third fin 12, which forms a thermal coupling with the heat spreader back plate 13 of the device (usually composited on the rear cover of the device's outer casing). A heat dissipation switching module is provided inside the heat pipe 7. This module can switch the thermal conduction state of the first fin 5, the second fin 6, and the third fin 12 on the heat pipe 7, so that a heat dissipation channel is formed between the first fin 5 and the second fin 6 for front-side heat dissipation, or between the second fin 6 and the third fin 12 for back-side heat dissipation. The heat dissipation switching module is communicatively connected to and controlled by the control unit. The specific structure of the heat dissipation switching module is designed according to the form of the heat pipe 7.

[0039] like Figure 4As shown, the heat pipe 7 of the present invention includes a hollow body 15 disposed on one side of the capacitive touch module 1, and a phase change medium inside the body 15. A first fin 5, a second fin 6, and a third fin 12, communicating with the body 15, are disposed on one side of the body 15. Each fin serves as a heat exchange area, while the body 15 serves as a medium circulation area. To prevent the gaseous phase change medium from condensing on the sidewalls and top of the body 15 through heat exchange, thermal insulation protection can be provided in the non-fin areas, for example, by providing a thermal insulation layer. A capillary adsorption layer 16 is formed on the inner walls of the body 15, the first fin 5, the second fin 6, and the third fin 12. The capillary adsorption layer 16 is used to adsorb and return the liquid phase change medium condensed at the first fin 5 and the third fin 12 to the second fin 6 through capillary action.

[0040] When the heat pipe 7 is working, the phase change medium evaporates upon contact with the heat source at the second fin 6 and moves along the main body 15 to the first fin 5 / third fin 12, where it condenses and releases heat, transferring the heat to the heat-conducting metal frame 4 thermally coupled to the first fin 5 or the heat-spreading backplate 13 thermally coupled to the third fin 12. The condensed phase change medium is adsorbed and refluxed back to the second fin 6 by the capillary adsorption layer 16. To ensure adsorption reflux, the capillary adsorption layer 16 of this invention can employ gradient adsorption force; that is, the capillary adsorption force of the capillary adsorption layer 16 at the second fin 6 is significantly higher than that at other locations, decreasing from the second fin 6 towards the main body 15, the first fin 5, and the third fin 12. The capillary adsorption layers 16 at the main body 15, the first fin 5, and the third fin 12 primarily satisfy the movement and circulation of the liquid phase change medium, while the second fin 6, due to its greater capillary adsorption force, can effectively adsorb and reflux the phase change medium from various locations. The magnitude of this capillary adsorption force can be achieved by changing the capillary pore size and porosity of the capillary adsorption layer 16 during copper powder sintering. When using this three-fin heat pipe 7, the positions of the capacitive touch module 1 and the display module 2 are typically opposite to the positions between the first fin 5 and the second fin 6, and the position of the mounting area 3 is opposite to the positions between the second fin 6 and the third fin 12.

[0041] There are many specific forms of the heat dissipation switching module, and this invention only elaborates on two of them.

[0042] 1. Lifting frame structure:

[0043] Combination Figure 4-6 As shown, the heat dissipation switching module includes a lifting frame 17 (such as a lifting frame 17) that is adapted to the main body 15 and is disposed within the main body 15. Figure 6As shown, the lifting frame 17 has two connecting holes 18 on its upper and lower parts facing the capacitive touch module 1. A fixed magnet 19 is provided on the other side of the lifting frame 17, and a driving magnet 20 cooperating with the fixed magnet 19 is provided on the outer side of the main body 15. The heat dissipation switching module uses the lifting of the driving magnet 20 to move the fixed magnet 19 and the lifting frame 17 up and down within the main body 15, thereby changing the correspondence between the two connecting holes 18 and the first fin 5, the second fin 6, and the third fin 12. Figure 4 In this configuration, the connecting holes 18 of the lifting frame 17 correspond to the first fin 5 and the second fin 6, respectively. At this time, the gaseous phase change medium mainly operates within the areas where the first fin 5 and the second fin 6 are located, and condenses at the first fin 6, achieving frontal heat dissipation. Meanwhile... Figure 5 In the middle, after the lifting frame 17 descends, the gaseous phase change medium mainly operates in the area where the second fin 6 and the third fin 12 are located, and condenses at the third fin 12 to achieve heat dissipation from the back. The movement of the driving magnet 20 can be controlled by small electronically controlled driving components such as electromagnetic push rods. Considering the installation space and driving stroke, the movement stroke of the driving component can also be amplified by a swing lever to meet the driving requirements of the driving magnet 20. This structure is relatively simple and will not be described in detail in this invention.

[0044] 2. Flip-panel structure:

[0045] Combination Figure 7-9 As shown, the heat dissipation switching module includes a flap 21 with an obtuse-angled V-shaped cross-section disposed within the main body 15 (e.g., Figure 9 As shown in the diagram, fixed magnets 19 are provided on the back of both sides of the flap 21. Two electromagnets 22, cooperating with the fixed magnets 19, are arranged on the upper and lower outer walls of the main body 15. The heat dissipation switching module drives the flap 21 to swing within the main body 15 by the alternating attraction of the fixed magnets 19 to the electromagnets 22, thereby changing the positional relationship between the flap 21 and the first fin 5, the second fin 6, and the third fin 12. The two electromagnets 22 attract and repel the fixed magnets 19, as shown in the diagram. Figure 7 The upper electromagnet 22 attracts and the lower electromagnet 22 repels, allowing the flap 21 to be adjusted as follows: Figure 7 The location shown. Figure 8 As shown, this is achieved by the upper electromagnet 22 repelling and the lower electromagnet 22 attracting. Of course, in order to ensure the position of the flap 21 within the main body 15 and prevent misalignment, an arc-shaped part 23 can be provided at the corner of the flap 21. Correspondingly, a groove that cooperates with the arc-shaped part 23 can be provided on the side wall of the main body 15.

Claims

1. An adaptive temperature-controlled capacitive touch display screen, comprising a capacitive touch module (1) and a display module (2) stacked on the back of the capacitive touch module (1), wherein the back of the display module (2) constitutes a mounting area (3) for mounting device components. Its features are: The capacitive touch module (1) has a heat-conducting metal frame (4) on its front edge; it also includes a heat pipe (7), on which a first fin (5) and a second fin (6) are provided. The first fin (5) is thermally coupled to the heat-conducting metal frame (4), and the second fin (6) is thermally coupled to the heat dissipation surface of the display module (2) and / or the heat dissipation surface of the high-heat-generating device components in the mounting area (3) to absorb working heat; the capacitive touch module (1) can conduct working heat to the front of the capacitive touch module (1) through the heat pipe (7) to heat the capacitive touch module (1) so that the surface temperature of the capacitive touch module (1) is higher than the ambient dew point temperature; It also includes an ambient temperature and humidity sensor (10) for detecting ambient temperature and humidity, and a capacitive screen temperature sensor (11) for detecting the surface temperature of the capacitive touch module (1). The heat pipe (7) is also provided with a third fin (12), which is thermally coupled with the heat-spreading back plate (13) of the equipment; a heat dissipation switching module is provided inside the heat pipe (7), which can switch the heat conduction state of the first fin (5), the second fin (6), and the third fin (12) on the heat pipe (7) so that a heat dissipation channel is formed between the first fin (5) and the second fin (6) of the heat pipe (7) to achieve front heat dissipation or a heat dissipation channel is formed between the second fin (6) and the third fin (12) to achieve back heat dissipation.

2. The adaptive temperature-controlled capacitive touch display screen according to claim 1, characterized in that: A graphene layer (8) is vapor-deposited on the front side of the capacitive touch module (1). The thermally conductive metal frame (4) forms a thermal coupling with the capacitive touch module (1) through the graphene layer (8) and distributes heat evenly to the surface of the entire capacitive touch module (1) through the graphene layer (8).

3. The adaptive temperature-controlled capacitive touch display screen according to claim 2, characterized in that: A layer of silicon dioxide anti-scratch and wear-resistant layer (9) is deposited on the outside of the graphene layer (8).

4. The adaptive temperature-controlled capacitive touch display screen according to claim 3, characterized in that: The heat dissipation switching module, the ambient temperature and humidity sensor (10), and the capacitive screen temperature sensor (11) are all connected to the control unit, and the heat dissipation switching module is controlled by the control unit.

5. The adaptive temperature-controlled capacitive touch display screen according to claim 4, characterized in that: An electric auxiliary heating unit (14) for heating the thermally conductive metal frame (4) is also embedded on the thermally conductive metal frame (4).

6. The adaptive temperature-controlled capacitive touch display screen according to claim 5, characterized in that: The heat pipe (7) includes a hollow body (15) disposed on one side of the capacitive touch module (1) and a phase change medium inside the body (15); a first fin (5), a second fin (6) and a third fin (12) are disposed on one side of the body (15) in communication with the body (15); a capillary adsorption layer (16) is formed on the inner wall of the body (15), the first fin (5), the second fin (6) and the third fin (12), and the capillary adsorption layer (16) is used to adsorb and return the liquid phase change medium condensed at the first fin (5) and the third fin (12) to the second fin (6) through capillary action.

7. The adaptive temperature-controlled capacitive touch display screen according to claim 6, characterized in that: The capillary adsorption force of the capillary adsorption layer (16) at the second fin (6) is higher than that at the main body (15), the first fin (5) and the third fin (12).

8. The adaptive temperature-controlled capacitive touch display screen according to claim 7, characterized in that: The capacitive touch module (1) and the display module (2) are positioned relative to the positions between the first fin (5) and the second fin (6), and the mounting area (3) is positioned relative to the positions between the second fin (6) and the third fin (12).

9. The adaptive temperature-controlled capacitive touch display screen according to claim 8, characterized in that: The heat dissipation switching module includes a lifting frame (17) adapted to the main body (15) and located inside the main body (15). The lifting frame (17) has two connecting holes (18) on its upper and lower parts facing the capacitive touch module (1). A fixed magnet (19) is provided on the other side of the lifting frame (17). A driving magnet (20) that cooperates with the fixed magnet (19) is provided on the outer side of the main body (15). The heat dissipation switching module uses the lifting of the driving magnet (20) to drive the fixed magnet (19) and the lifting frame (17) to rise and fall within the main body (15) to change the correspondence between the two connecting holes (18) and the first fin (5), the second fin (6) and the third fin (12).

10. The adaptive temperature-controlled capacitive touch display screen according to claim 8, characterized in that: The heat dissipation switching module includes a flap (21) with an obtuse V-shaped cross-section disposed inside the main body (15). Fixed magnets (19) are disposed on the back of both sides of the flap (21). Two electromagnets (22) that cooperate with the fixed magnets (19) are disposed on the upper and lower sides of the outer side wall of the main body (15). The heat dissipation switching module drives the flap (21) to swing inside the main body (15) by the alternating adsorption of the fixed magnets (19) by the electromagnets (22) to change the positional relationship between the flap (21) and the first fin (5), the second fin (6) and the third fin (12).

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