Pressure detection sensing film, touch sensing assembly and touch display equipment
By configuring a strain sensor in the electrode layer suspension block channel of the touch panel and determining the external pressure value by deformation detection, the problem of degradation of detection accuracy of touch panels under the influence of common mode interference and water stains in the prior art is solved, and a higher degree of anti-interference and accuracy are achieved.
Patent Information
- Application Number
- CN202311374636.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-20
- Publication Date
- 2025-04-29
AI Technical Summary
Under the influence of common mode interference and water stains, the existing touch panels have reduced or failed in mutual capacitance detection accuracy, and have a low degree of anti-interference.
A strain sensor is arranged in the suspended block channels of the receiving electrode layer and the emitting electrode layer of the touch panel, and the external pressure value is determined through deformation detection, thereby improving the anti-interference degree and accuracy of touch detection.
It effectively improves the anti-interference degree and accuracy of touch detection, and avoids the impact of environmental impacts such as common mode interference and water stains on the detection results.
Smart Images
Figure CN119902635A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of touch technology, and in particular to a pressure detection sensing film, a touch sensing component and a touch display device. Background Art
[0002] As an input device, touch panels are now widely used in electronic devices such as smartphones, tablets, and computer displays. They allow users to interact with devices by touching areas on the screen, increasing the intelligence of electronic devices. There are many types of touch panel technology, including capacitive, resistive, surface acoustic wave, and optical touch screens, each with different working principles and application scenarios.
[0003] like Figure 1 As shown in FIG. 1 , it is a structural diagram of a touch panel commonly used at present. Figure 1 The touch panel shown has the transmitting electrode (TX electrode) and receiving electrode (RX electrode) of the touch screen on the outside of the display screen, and there is an insulating layer between the two layers of electrodes. When an external conductive object approaches or touches it, it will cause the mutual capacitance between the conductive channels inside the transmitting electrode and the receiving electrode to change, and then the specific touch coordinates can be identified.
[0004] However, when there is common-mode interference in the environment, water stains on the screen and other environmental influences, the mutual capacitance detection will become less accurate or fail. Therefore, how to enhance the anti-interference level of touch control and improve the accuracy of touch has become an urgent problem to be solved. Summary of the invention
[0005] An object of the embodiments of the present application is to provide a pressure detection sensing film, a touch sensing component and a touch display device to improve the problem of low anti-interference level of the touch panel provided by the prior art.
[0006] An embodiment of the present application provides a pressure detection sensing film, comprising: a substrate, a receiving electrode layer and a transmitting electrode layer, wherein the receiving electrode layer and the transmitting electrode layer are covered on the substrate; wherein the receiving electrode layer comprises a plurality of first conductive channels and a plurality of first suspended block channels, and the transmitting electrode layer comprises a plurality of second conductive channels and a plurality of second suspended block channels; a strain sensor is configured in the first suspended block channel and / or the second suspended block channel, and the strain sensor is used to detect the deformation of the receiving electrode layer and / or the transmitting electrode layer when external pressure exists, so as to determine the corresponding pressure value.
[0007] In combination with the first aspect, in a possible implementation, the substrate includes a first substrate and a second substrate, and the first substrate and the second substrate are bonded with a bonding adhesive; the receiving electrode layer and the transmitting electrode layer are covered on the substrate, including: the receiving electrode layer is covered on the surface of the first substrate, and the transmitting electrode layer is covered on the surface of the second substrate. In combination with the first aspect, in a possible implementation, the substrate is a third substrate; the receiving electrode layer and the transmitting electrode layer are covered on the substrate, including: the receiving electrode layer is covered on the surface of the third substrate, and the transmitting electrode layer is covered on the back of the third substrate; or, the transmitting electrode layer is covered on the surface of the third substrate, and the receiving electrode layer is covered on the back of the third substrate.
[0008] In combination with the first aspect, in a possible implementation, the manner in which the strain sensor is configured in the first suspension block channel and / or the second suspension block channel includes: a strain sensor is set for every n first suspension block channels, and a strain sensor is set for every m second suspension block channels, where m and n are positive integers greater than or equal to 1; or, a strain sensor is set for each first suspension block channel; or, a strain sensor is set for each second suspension block channel.
[0009] In combination with the first aspect, in a possible implementation, the strain sensor includes: any one or more of a strain gauge in the form of a resistance wire, an indium tin oxide film, and a silver paste.
[0010] In combination with the first aspect, in a possible implementation manner, when the strain sensor is a strain gauge in the form of a resistance wire, a diameter of the resistance wire is less than 20 um.
[0011] In a second aspect, a touch sensing component is provided, comprising: a cover plate, a display screen, and the pressure detection sensing film as described in the first aspect; the cover plate is located above the pressure detection sensing film and is bonded to the pressure detection sensing film with a bonding adhesive, and the pressure detection sensing film is located above the display screen and is bonded to the display screen with a bonding adhesive or air.
[0012] According to a third aspect, a touch display device is provided, comprising: a touch sensing component, a processor and a memory; the touch sensing component, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the following operations: when there is external pressure, the touch sensing component detects the deformation of the internal receiving electrode layer and / or the transmitting electrode layer to generate an electrical signal difference; determines a corresponding pressure value according to the electrical signal difference, and controls the touch sensing component to respond to touch according to the pressure value.
[0013] In combination with the third aspect, in a possible implementation, the touch sensing component also includes: a humidity sensor, which is located between the touch sensing component and the display screen; the humidity sensor is used to increase voltage or current when it detects that the current humidity is greater than or equal to a preset humidity threshold, so that the strain sensor in the touch sensing component generates heat to reduce the current humidity.
[0014] In combination with the third aspect, in a possible implementation manner, the space between the touch sensing component and the display screen is filled with air.
[0015] The present application can achieve the following beneficial effects: the pressure detection sensing film shown in the present application includes a substrate, a receiving electrode layer and a transmitting electrode layer. A strain sensor is configured in the first suspension block channel in the receiving electrode layer and / or the second suspension block channel in the transmitting electrode layer. When external pressure exists, the deformation of the receiving electrode layer is detected by the strain sensor to determine the corresponding pressure value. Since the pressure detection sensing film detects pressure through deformation, when there are common interferences such as common mode interference and water stains, these interferences will not affect the pressure value generated by the deformation. Therefore, the pressure detection sensing film shown in the present application can effectively improve the anti-interference degree and accuracy of touch detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0017] Figure 1 It is a structural schematic diagram of an existing touch panel;
[0018] Figure 2 It is a schematic diagram of the structure of an existing emitting electrode;
[0019] Figure 3A A schematic diagram of the structure of a pressure detection sensing membrane provided in an embodiment of the present application;
[0020] Figure 3B A schematic diagram of the positional relationship between a substrate, an emitting electrode layer, and a receiving electrode layer provided in an embodiment of the present application;
[0021] Figure 3C A schematic diagram of the positional relationship of another substrate, a transmitting electrode layer, and a receiving electrode layer provided in an embodiment of the present application;
[0022] Figure 3D A schematic diagram of the structure of a receiving electrode layer and a transmitting electrode layer provided in an embodiment of the present application;
[0023] Figure 4A schematic diagram of the structure of a touch sensing component provided in an embodiment of the present application. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.
[0025] It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional module division is performed in the system schematic, in some cases, the module division can be different from that in the system. Furthermore, the words "first", "second", "third", etc. used in this application do not limit the data and execution order, but only distinguish the same items or similar items with basically the same functions and effects.
[0026] To introduce the present application in more detail, a conventional touch screen is briefly introduced below. Figure 1 , which is a schematic diagram of the structure of an existing touch screen. Figure 1 The touch screen shown is a laminated structure, in which there are transmitting electrodes and receiving electrodes on the outside of the display screen of the touch screen (close to the glass / cover plate), and there is an insulating layer between the two layers of electrodes, so that there is mutual capacitance between the two electrode layers. The touch detection principle is that when an external conductive object approaches or touches the touch screen, the mutual capacitance between the transmitting electrode and the receiving electrode changes, and the specific touch coordinates can be identified.
[0027] For further information, see Figure 2 , which is a schematic diagram of the structure of an existing emitting electrode. Ideally, the emitting electrode only needs to retain the useful conductive channel, but in the field of large-scale touch control, the electrode conductive layer material used is mostly a whole piece of flexible conductive material, and the excess material is removed by subsequent laser or etching methods to retain the required electrode material. Therefore, in actual conditions, in addition to the conductive channel, there are also suspended block channels between each conductive channel that are only retained for adjusting the optical image filtering effect, and the suspended block channels are not used in the touch detection process.
[0028] In one embodiment, when the transmitting electrodes are arranged in rows, the receiving electrodes are arranged in columns. The specific structure of the receiving electrodes is similar to that of the transmitting electrodes and will not be described in detail herein.
[0029] Since mutual capacitance detection may become inaccurate or fail when there is common-mode interference in the environment or water stains on the screen, the present application proposes a pressure detection sensing film, a touch sensing component and a touch display device, aiming to add strain sensors to the suspension block channels of the transmitting electrode and / or the receiving electrode that are not effectively utilized, and to increase the anti-interference degree of touch detection by deformation detection, thereby improving the accuracy of touch detection.
[0030] See below Figure 3A , is a schematic diagram of the structure of a pressure detection sensing film provided by the present application. The pressure detection sensing film 30 comprises: a substrate 301 , a receiving electrode layer 302 and a transmitting electrode layer 303 , wherein the receiving electrode layer 302 and the transmitting electrode layer 303 are covered on the substrate 301 .
[0031] In one embodiment, the substrate 301 includes a first substrate and a second substrate, and the first substrate and the second substrate are bonded with adhesive. The receiving electrode layer and the transmitting electrode layer are covered on the substrate, including: the receiving electrode layer is covered on the surface of the first substrate, and the transmitting electrode layer is covered on the surface of the second substrate.
[0032] For example, see Figure 1 The structure of the touch panel shown in FIG. Figure 1 The substrate includes two layers of substrates, one layer of the substrate is covered with the receiving electrode layer, and the other layer of the substrate is covered with the transmitting electrode layer, and the two layers of the substrate are bonded with adhesive. The above structure can make full use of the existing touch screen process, and the configuration of the pressure detection sensing film shown in the present application can be completed without making major changes, which reduces the process difficulty.
[0033] For another example, the positional relationship between the receiving electrode layer covering the surface of the first substrate and the transmitting electrode layer covering the surface of the second substrate can also be as follows: Figure 3B As shown in FIG. 1 , the surface of the first substrate is the receiving electrode layer, the surface of the second substrate is the transmitting electrode layer, and the first substrate is located on the second substrate. Alternatively, the receiving electrode layer covers the surface of the first substrate, and the transmitting electrode layer covers the surface of the second substrate. Figure 3C As shown: the surface of the first substrate is the receiving electrode layer, the surface of the second substrate is the transmitting electrode layer, and the second substrate is located on the first substrate.
[0034] It should be noted that from this Figure 3B and Figure 3CIt can be seen that the transmitting electrode layer or the receiving electrode layer can be located between two layers of substrates, the first substrate can be located on the second substrate, or the second substrate can also be located on the first substrate. The positional relationship between the first substrate and the second substrate can be designed as needed, and this application does not impose any restrictions on this.
[0035] In one embodiment, the substrate is a third substrate; the receiving electrode layer and the transmitting electrode layer are covered on the substrate, including: the receiving electrode layer is covered on the surface of the third substrate, and the transmitting electrode layer is covered on the back side of the third substrate; or, the transmitting electrode layer is covered on the surface of the third substrate, and the receiving electrode layer is covered on the back side of the third substrate.
[0036] For example, Figure 3A The substrate shown can be a single-layer substrate, which is a laminated structure with electrode channels on both sides. One way is to cover the receiving electrode layer on the surface of the single-layer substrate and the transmitting electrode layer on the back of the single-layer substrate. Another way is to cover the transmitting electrode layer on the surface of the single-layer substrate and the receiving electrode layer on the back of the single-layer substrate. In this structure, as long as the transmitting electrode layer and the receiving electrode layer are not in the same plane, the strain sensor can be embedded as a pressure detection component, and this structure only uses a single-layer substrate, which can further reduce the thickness of the pressure detection sensing film.
[0037] Further, such as Figure 3D As shown, the receiving electrode layer 302 includes a plurality of first conductive channels 3021 and a plurality of first suspension block channels 3022, and the transmitting electrode layer 303 includes a plurality of second conductive channels 3031 and a plurality of second suspension block channels 3032. The first suspension block channels 3022 and / or the second suspension block channels 3032 are provided with strain sensors (such as Figure 3B The strain sensor is used to detect the deformation between the receiving electrode layer 302 and the transmitting electrode layer 303 when there is external pressure, so as to determine the corresponding pressure value.
[0038] It should be noted that Figure 3D The conductive channel and the suspension block channel shown are of a diamond structure. In other embodiments, the conductive channel and the suspension block channel may also be of a bar, a triangle, etc., and the present application does not impose any limitation on this.
[0039] In one embodiment, when the strain sensor is Figure 3D In the strain gauge in the form of a resistance wire, the diameter of the resistance wire is less than 20 um. By controlling the diameter of the resistance wire within 20 um, the transmittance of the optical effect can be guaranteed.
[0040] As a feasible implementation method, for an additive or subtractive metal grid process capacitive screen, the process can be directly used to manufacture the resistance wire without adding additional process steps.
[0041] In one embodiment, the strain sensor is Figure 3D In addition to the resistance wire-shaped strain gauge shown, it can also be any one or more of indium tin oxide film and silver paste.
[0042] It should be noted that the indium tin oxide film and the silver paste are a whole layer of flexible conductive film material with a certain square resistance. When there is external pressure, the area or length of the indium tin oxide film and the silver paste stretches due to deformation, causing resistance changes. The corresponding pressure value can be obtained by measuring the resistance change value.
[0043] In one embodiment, different strain sensor configurations may be provided according to different requirements for pressure detection accuracy. The configuration of strain sensors in the first suspension block channel and / or the second suspension block channel includes: a strain sensor is provided for every n first suspension block channels, and a strain sensor is provided for every m second suspension block channels, where m and n are positive integers greater than or equal to 1; or, a strain sensor is provided for each first suspension block channel; or, a strain sensor is provided for each second suspension block channel.
[0044] For example, when the pressure detection accuracy is high, you can use Figure 3B The configuration of the strain sensor shown in the figure is that each first suspension block channel is provided with a strain sensor, and each second suspension block channel is provided with a strain sensor. When the pressure detection accuracy requirement is not high, a strain sensor can be configured every one or more channels, or a strain sensor can be configured only in the receiving electrode layer or the transmitting electrode layer.
[0045] For example, an application that does not require high pressure detection accuracy can be to achieve zero writing height in writing operations. The zero writing height means that when the pressure value of the pressure detection sensing film is greater than the preset pressure threshold (for example, the pressure value is greater than 1g), it will respond to the writing operation of the touch object (such as a human hand or a stylus) and display the corresponding handwriting on the display screen. Since the traditional capacitive touch method mainly relies on the signal of the capacitor for writing detection rather than the pressure value, the signal of the stylus is much lower than that of the human hand. In order to be compatible with both the stylus and the human hand, the threshold of the signal is usually set lower to avoid the stylus from not being recognized when writing. However, this situation can easily lead to handwriting appearing before the human hand actually touches the screen when writing. The handwriting written does not have a similar feel to writing on paper, and there will be tailing at the moment of lifting the pen, resulting in a poor user experience. The embodiment of the present application avoids the problem of handwriting appearing before the user touches the screen when the touch is recognized by the signal quantity by configuring a strain sensor to detect the touch pressure. The writing operation can be responded to when the pressure reaches the preset pressure, which can ensure that the touch object must be in contact with the pressure detection sensing film before responding, thereby improving the user experience. In addition, since the pressure value is only a switch in the application process of zero writing height, the accuracy requirement for pressure recognition is relatively low, so a strain sensor can be configured every one or more channels, or a strain sensor can be configured only in the receiving electrode layer or the transmitting electrode layer. This configuration method can also save costs to a certain extent.
[0046] As a feasible implementation, the pressure detection sensing film can also realize the synchronous acquisition of pressure and touch position. For example, when multiple strain sensors are set in the receiving electrode layer and / or the transmitting electrode layer, when there is external pressure, the touch position can be determined by the position of the strain sensor that detects the pressure.
[0047] For example, a separate strain pressure sensor can be arranged at each position of the receiving electrode layer (the same applies to the transmitting electrode layer, which will not be elaborated here), so that the specific coordinates of each position can be identified (it can be understood that if the density is arranged at both the receiving electrode layer and the transmitting electrode layer, the accuracy of position detection can be higher).
[0048] For another example, strain pressure sensors in the form of whole strips (arranged in rows and columns) can be arranged on both the receiving electrode layer and the transmitting electrode layer. When a touch object touches the pressure detection sensing film, it can be identified which row and column of strain pressure sensors have pressure, and the intersection of the two can be used to determine the touch coordinates. In this way, the touch mode can be a single-finger touch or a double-finger rotation zoom.
[0049] It can be seen that the pressure detection sensing film shown in the present application includes a substrate, a receiving electrode layer and a transmitting electrode layer. By configuring a strain sensor in the first suspended block channel in the receiving electrode layer and / or the second suspended block channel in the transmitting electrode layer, when there is external pressure, the strain sensor is used to detect the deformation of the receiving electrode layer and / or the transmitting electrode layer to determine the corresponding pressure value. The deformation detection method can avoid the problem that capacitance detection is easily affected by environmental influences such as common membrane interference and water stains (when there are environmental influences such as common membrane interference and water stains, these influences will not affect the pressure value generated by the deformation), thereby effectively improving the anti-interference degree and accuracy of touch detection.
[0050] The following describes the touch sensing components shown in this application. Figure 4 , is a schematic diagram of the structure of the touch sensing component shown in an embodiment of the present application. Figure 4 The touch sensing assembly 40 shown includes a cover plate 401 , a display screen 403 , and a pressure detection sensing film 402 .
[0051] The cover plate 401 is located above the pressure detection sensing film 402 and is adhered to the pressure detection sensing film 402 by adhesive. The pressure detection sensing film 402 is located above the display screen 403 and is adhered to the display screen 403 by adhesive or air.
[0052] It should be noted that when the pressure detection sensing film 402 is adhered to the display screen 403 by air, its production cost can be lower; when the pressure detection sensing film 402 is adhered to the display screen 403 by bonding adhesive, its display effect can be better.
[0053] In one embodiment, the touch sensing component 40 can be a capacitive touch type or an electromagnetic touch type, and the present application does not impose any limitation on this.
[0054] It should be noted that the specific structure of the pressure detection sensing film 402 can refer to the description of the pressure detection sensing film in the above embodiment, which will not be repeated here.
[0055] The working principle of the touch sensing component 40 can be: when a human hand or other touch object touches the touch sensing component 40, it will cause force deformation, and the strain sensor set in the suspension block channel of the electrode layer of the pressure detection sensing film will detect the deformation size and calculate the pressure value of the external force according to the deformation size. Since the deformation detection is not affected by common mode interference and environmental interference such as water stains, the touch display device 40 can improve the anti-interference degree and accuracy of touch detection.
[0056] It can be seen that through the embodiment of the present application, the touch sensing component is configured with a strain sensor in the first suspension block channel in the receiving electrode layer and / or the second suspension block channel in the transmitting electrode layer. When there is external pressure, the strain sensor detects the deformation between the receiving electrode layer and the transmitting electrode layer to determine the corresponding pressure value, and controls the display screen to respond to touch according to the pressure value. Since common interference effects such as common mode interference and water stains do not affect the results of deformation detection, the pressure detection sensing film shown in the present application can effectively improve the anti-interference degree and accuracy of touch detection.
[0057] The present application also provides a touch display device, including: a touch sensing component, a processor and a memory; the touch sensing component, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform: when there is external pressure, the touch sensing component detects the deformation of the internal receiving electrode layer and / or the transmitting electrode layer to generate an electrical signal difference; determines the corresponding pressure value according to the electrical signal difference, and controls the touch sensing component to respond to touch according to the pressure value.
[0058] It should be noted that the specific structure of the touch sensing component can refer to the corresponding description in the aforementioned embodiment and will not be described in detail here.
[0059] In one embodiment, the touch display device can also use the pressure value as a touch response switch. For example, when the touch object is a stylus, if the handwriting (zero writing height) only needs to appear when it touches the touch screen, the touch display device can detect that the pressure value is greater than a preset pressure threshold before performing a subsequent touch response. If the pressure value is less than or equal to the preset pressure threshold, no touch response is performed.
[0060] In one embodiment, the touch display device can determine the corresponding touch position in addition to determining the pressure value of the external pressure. For example, multiple strain sensors are set in the receiving electrode layer and / or the transmitting electrode layer in the pressure detection sensing film of the touch display device. When there is external pressure, the specific touch position can be determined by the position of the strain sensor that detects the pressure.
[0061] It should be noted that the touch display device itself can also detect the touch position based on capacitance or electromagnetic changes. Combined with the above-mentioned method of determining the touch position through strain sensors, the accuracy of touch position detection can be further improved. Moreover, since strain sensors are based on deformation detection, they will not be affected by common interference such as common mode interference and water stains, which can further improve the anti-interference degree of the touch display device.
[0062] In one embodiment, the touch display device also includes: a humidity sensor, which is located between the touch sensing component and the display screen; the humidity sensor is used to increase voltage or current when it detects that the current humidity is greater than or equal to a preset humidity threshold, so that the strain sensor in the touch sensing component generates heat to reduce the current humidity.
[0063] In one embodiment, the space between the touch sensing component and the display screen is filled with air.
[0064] Specifically, the humidity sensor may be located between the substrate of the pressure detection sensing film in the touch sensing component and the display screen.
[0065] It should be noted that the water mist may be generated above the display screen due to the surrounding environment between the touch sensing component and the display screen, thus affecting the display clarity of the touch screen. This problem is more obvious when the space between the substrate and the display screen is filled with air. By heating the strain sensor, the water mist disappears, and the display clarity of the touch display device can be improved.
[0066] For example, a humidity sensor is arranged between the display screen in the touch sensing component and the substrate of the pressure detection sensing film, and the humidity sensor is connected to the strain sensor in the suspension block channel. When the humidity sensor detects that the humidity on the display screen below exceeds the preset humidity threshold, the humidity of the display screen can be reduced by heating the strain sensor, thereby improving the clarity of the entire touch screen.
[0067] It should also be noted that the above-described components and device embodiments are merely illustrative, wherein the unit modules described as separate components may or may not be physically separated, and the components displayed as module units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network module units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Finally, it should be noted that the above embodiments are only used to illustrate the technical scheme of the present application, rather than to limit it; under the idea of the present application, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity; although the present application is described in detail with reference to the above embodiments, ordinary technicians in the field should understand that it is still possible to modify the technical schemes recorded in the above embodiments, or to replace some of the technical features therein by equivalent; and these modifications or replacements do not make the essence of the corresponding technical schemes depart from the scope of the technical schemes of the embodiments of the present application.
Claims
1. A pressure detection sensing membrane, characterized in that: include: A substrate, a receiving electrode layer and a transmitting electrode layer, wherein the receiving electrode layer and the transmitting electrode layer are covered on the substrate; Wherein, the receiving electrode layer includes a plurality of first conductive channels and a plurality of first suspension block channels, and the transmitting electrode layer includes a plurality of second conductive channels and a plurality of second suspension block channels; A strain sensor is configured in the first suspension block channel and / or the second suspension block channel, and the strain sensor is used to detect the deformation of the receiving electrode layer and / or the transmitting electrode layer when external pressure exists, so as to determine the corresponding pressure value.
2. The pressure detection sensing film according to claim 1, characterized in that: The substrate comprises a first substrate and a second substrate, and the first substrate and the second substrate are bonded with a bonding adhesive; The receiving electrode layer and the transmitting electrode layer are covered on the substrate, and include: The receiving electrode layer covers the surface of the first substrate, and the transmitting electrode layer covers the surface of the second substrate.
3. The pressure detection sensing film according to claim 1, characterized in that: The substrate is a third substrate; The receiving electrode layer and the transmitting electrode layer are covered on the substrate, and include: The receiving electrode layer covers the surface of the third substrate, and the transmitting electrode layer covers the back side of the third substrate; Alternatively, the transmitting electrode layer covers the surface of the third substrate, and the receiving electrode layer covers the back side of the third substrate.
4. The pressure detection sensing film according to any one of claims 1 to 3, characterized in that: The manner of configuring the strain sensor in the first suspension block channel and / or the second suspension block channel includes: A strain sensor is arranged every n first suspension block channels, and a strain sensor is arranged every m second suspension block channels, wherein m and n are positive integers greater than or equal to 1; Or, each first suspension block channel is provided with a strain sensor; Alternatively, a strain sensor is provided in each second suspension block channel.
5. The pressure detection sensing film according to any one of claims 1 to 3, characterized in that: The strain sensor includes: any one or more of a strain gauge in the form of a resistance wire, an indium tin oxide film, and a silver paste.
6. The pressure detection sensing film according to claim 5, characterized in that: When the strain sensor is a strain gauge in the form of a resistance wire, the diameter of the resistance wire is less than 20 um.
7. A touch sensing component, characterized in that: include: A cover plate, a display screen, and a pressure detection sensing film as described in any one of claims 1 to 6; the cover plate is located above the pressure detection sensing film and is adhered to the pressure detection sensing film with adhesive, and the pressure detection sensing film is located above the display screen and is adhered to the display screen with adhesive or air.
8. A touch display device, characterized in that: include: A touch sensing component, a processor and a memory; the touch sensing component, the memory and the processor are in communication with each other, the memory stores computer instructions, and the processor executes the computer instructions to perform: When there is external pressure, the touch sensing component detects the difference in electrical signals generated by the deformation of the internal receiving electrode layer and / or transmitting electrode layer; A corresponding pressure value is determined according to the electrical signal difference, and the touch sensing component is controlled to perform a touch response according to the pressure value.
9. The touch display device according to claim 8, characterized in that: The touch display device also includes: a humidity sensor, which is located between the touch sensing component and the display screen; the humidity sensor is used to increase voltage or current when it detects that the current humidity is greater than or equal to a preset humidity threshold, so that the strain sensor in the touch sensing component generates heat to reduce the current humidity.
10. The touch display device according to claim 9, characterized in that: The space between the touch sensing component and the display screen is filled with air.