A three-dimensional touch module and detection method thereof

Abstract

The present invention relates to a detection method of a three-dimensional touch module, which is applied to the three-dimensional touch module, and includes the following steps: step S1, providing an input signal to the emitting electrode layer; step S2, the two-dimensional input assembly outputs a first output signal and transmits it to the control module; the pressure sensing assembly outputs a second output signal and transmits it to the control module; step S3, the control module confirms the touch position according to the first output signal; the control module confirms the pressure value according to the second output signal. The present invention also provides a three-dimensional touch module, which includes a control module and a three-dimensional touch assembly electrically connected thereto; the three-dimensional touch assembly includes: a cover plate; a two-dimensional input assembly, arranged below the cover plate, for outputting a first output signal; a pressure sensing assembly, arranged below the cover plate, for outputting a second output signal; and an emitting electrode layer, arranged between the two-dimensional input assembly and the pressure sensing assembly.

Description

[Technical field]

[0001] The present invention relates to the field of touch input technology, and in particular to a three-dimensional touch module and a detection method thereof. [Background technology]

[0002] With the development of touch technology, display devices equipped with touch functions have been maturely applied in industrial electronics and consumer electronic products. For the detection of touch points, whether on a capacitive screen or a resistive screen, different principles are used to determine the two-dimensional coordinates of the touch point on the display device, and a two-dimensional coordinate system (X, Y) is established on the surface of the display device. The detection of the touch point is equivalent to determining the position of the touch point in the X-axis direction and the position in the Y-axis direction, that is, determining the two-dimensional coordinates of the touch point.

[0003] In order to further enrich display devices with touch functions, some display devices are currently equipped with pressure sensors to become three-dimensional input systems; for example, when different touch points at different positions match different pressing force values, corresponding functions can be set, that is, the design can be enriched from the 3D angle defined by the touch point (X, Y) and the pressure value (Z), thereby forming a display device including a three-dimensional touch module.

[0004] However, the electrical signal interference in the 3D touch module is very serious, which reduces the measurement accuracy of the touch position and the pressing pressure value. Therefore, how to simultaneously extract the touch signal and the pressure value signal is a big challenge for the control module. The signal separation method adopted by the existing technology requires filtering the pressure signal and the touch capacitance signal generated by each pressing before the amplifier processing and chip sensing (see Figure 1 , Figure 2 ), this approach has the following disadvantages:

[0005] 1. The extracted touch signals and pressure signals are mixed, which increases the difficulty of extracting pressure signals.

[0006] 2. The signal processing technology is complex, the requirements for the control module are high, and the signal interference problem is serious.

[0007] Therefore, how to provide a low-cost, effective and non-interfering 3D touch control assembly and detection method for detecting touch point signals and pressure value signals has become an urgent problem to be solved. [Summary of the invention]

[0008] In order to overcome the problems existing in the prior art, the present invention provides a three-dimensional touch module and a detection method thereof.

[0009] The solution to the technical problem of the present invention is to provide a detection method for a three-dimensional touch module, which is applied to the three-dimensional touch module. The three-dimensional touch module includes a control module, a two-dimensional input assembly, an emitting electrode layer and a pressure sensing assembly, and includes the following steps: Step S1, providing an input signal to the emitting electrode layer; Step S2, the two-dimensional input assembly outputs a first output signal and transmits it to the control module; the pressure sensing assembly outputs a second output signal and transmits it to the control module; Step S3, the control module confirms the touch position according to the first output signal; the control module confirms the pressure value according to the second output signal.

[0010] Preferably, the first output signal and the second output signal are independent of each other.

[0011] Preferably, the two-dimensional input assembly is a capacitive input assembly, a resistive input assembly or an ultrasonic input assembly.

[0012] Preferably, the first output signal corresponds to a capacitive sensing signal of a touch position; and the second output signal corresponds to a piezoelectric signal of a pressure value.

[0013] Preferably, when the first output signal and the second output signal are output in the same sequence, step S3 includes the following steps: step Sa, the control module receives the capacitive sensing signal output by the two-dimensional input assembly to complete the detection of the touch position; at the same time, the control module receives the piezoelectric signal generated by the pressure sensing assembly to complete the detection of the pressure value.

[0014] Preferably, when the first output signal and the second output signal are output in a divided time sequence, step S3 includes the following steps: step Si, the control module receives the capacitive sensing signal output by the two-dimensional input assembly to confirm the touch position; step Sj, the two-dimensional input assembly and the transmitting electrode layer are grounded; and step Sk, the control module receives the piezoelectric signal output by the pressure sensing assembly to confirm the pressure value.

[0015] Preferably, the two-dimensional input assembly includes a receiving electrode layer; and the pressure sensing assembly includes a pressure layer and a conductive layer that are superimposed.

[0016] Preferably, the conductive layer is a nanosilver conductive layer, a metal grid or an indium tin oxide semiconductor transparent conductive film.

[0017] Preferably, the two-dimensional input assembly and the pressure sensing assembly share the emitting electrode layer.

[0018] A three-dimensional touch module, characterized in that: it includes a control module and a three-dimensional touch assembly electrically connected to the control module; the three-dimensional touch assembly includes: a cover plate; a two-dimensional input assembly, arranged below the cover plate, for outputting a first output signal; a pressure sensing assembly, arranged below the cover plate, for outputting a second output signal; and an emitting electrode layer, arranged between the two-dimensional input assembly and the pressure sensing assembly.

[0019] Preferably, the two-dimensional input assembly is provided with a receiving electrode layer, and the receiving electrode layer is used to receive and output a first output signal; the pressure sensing assembly is provided with a pressure layer and a conductive layer, and the pressure layer and the conductive layer are arranged in a superimposed manner, the pressure layer is connected to the transmitting electrode layer, the pressure layer is used to generate a second output signal, and the conductive layer is used to receive and output the second output signal; the control module is electrically connected to the receiving electrode layer for receiving the first output signal; the control module is electrically connected to the conductive layer for receiving the second output signal.

[0020] Preferably, when the first output signal and the second output signal are output in the same sequence, the transmitting electrode layer receives the input signal, and the receiving electrode layer outputs the first output signal to the control module to complete the detection of the touch position. At the same time, the second output signal generated by the conductive layer relative to the control module is transmitted to the control module to complete the detection of the pressure value.

[0021] Preferably, when the first output signal and the second output signal are output in separate time sequences; within the first time sequence, the transmitting electrode layer receives the input signal, and the receiving electrode layer outputs the first output signal to the control module to complete the detection of the touch position; within the second time sequence, the transmitting electrode layer and the receiving electrode layer are grounded, and the conductive layer transmits the second output signal to the control module to complete the detection of the pressure value.

[0022] Preferably, the first output signal is a capacitive sensing signal, a resistance signal or an ultrasonic signal, and the second output signal is a piezoelectric signal.

[0023] Preferably, the two-dimensional input assembly and the pressure sensing assembly share the emitting electrode layer.

[0024] Compared with the prior art, the three-dimensional touch module and the detection method thereof of the present invention have the following advantages:

[0025] 1. By setting a two-dimensional input assembly and a pressure sensing assembly in the three-dimensional touch module, when the three-dimensional touch module is in use, the two-dimensional input assembly and the pressure sensing assembly can respectively output a first output signal and a second output signal, and then the control module directly analyzes the first output signal and the second output signal respectively to obtain the touch position corresponding to the first output signal and the pressure value corresponding to the second output signal, and reduces the configuration requirements for the control module, thereby effectively reducing the production and use costs of the three-dimensional touch module.

[0026] 2. The first output signal and the second output signal are independent of each other, which can effectively reduce the interference between the two signals during the signal extraction process of the control module and improve the accuracy of signal extraction.

[0027] 3. The first output signal corresponds to the touch position, and the second output signal corresponds to the pressure value. By setting two types of signals, the difficulty of signal processing by the control module is greatly reduced, so that more different types of control modules can be adapted to the three-dimensional touch assembly, that is, it can make the application scope of the three-dimensional touch assembly wider, and can also effectively reduce the production cost and use cost of the control module.

[0028] 4. The two-dimensional input assembly and the pressure sensing assembly share the same emitting electrode layer, so as to configure different input signals through the emitting electrode layer, thereby realizing the generation of the first output signal and the second output signal in a time-sequential or simultaneous manner.

[0029] 5. The control module detects and processes the first output signal and the second output signal simultaneously, which can effectively improve the response speed of the three-dimensional touch assembly.

[0030] 6. The control module detects and processes the first output signal and the second output signal in a time-sequential manner, so that the control module can detect the two signals more accurately. At the same time, the time-sequential detection and processing method has lower configuration requirements for the control module, which can effectively reduce the production and use costs of the three-dimensional touch assembly.

Brief Description of the Drawings

[0031] Figure 1 It is a schematic diagram of signal detection of a three-dimensional input module in the prior art.

[0032] Figure 2 It is a schematic diagram of the signal processing flow of a three-dimensional input module in the prior art.

[0033] Figure 3 It is a schematic diagram of the signal detection result of the three-dimensional input module in the prior art.

[0034] Figure 4 It is a module schematic diagram of a three-dimensional touch module according to the first embodiment of the present invention.

[0035] Figure 5 It is a schematic diagram of the layered structure of the three-dimensional touch assembly of the three-dimensional touch module according to the first embodiment of the present invention.

[0036] Figure 6 It is a schematic diagram of a flow chart of the control module of the three-dimensional touch module according to the first embodiment of the present invention sequentially detecting output signals.

[0037] Figure 7 It is a schematic diagram of the flow of the control module of the three-dimensional touch module of the first embodiment of the present invention detecting the output signal in time sequence.

[0038] Figure 8 It is a schematic diagram of the layered structure of the first variant implementation of the three-dimensional touch assembly of the three-dimensional touch module of the first embodiment of the present invention.

[0039] Fig. 9 It is a schematic diagram of the layered structure of the second variant implementation of the three-dimensional touch assembly of the three-dimensional touch module of the first embodiment of the present invention.

[0040] Fig.10 It is a flow chart of a detection method of a three-dimensional touch module according to a second embodiment of the present invention.

[0041] Fig.11 It is a schematic diagram of the flow of the control module of the three-dimensional touch module according to the second embodiment of the present invention detecting output signals in a time sequence.

[0042] Fig.12 It is a schematic diagram of signal detection results of the three-dimensional touch module according to the second embodiment of the present invention.

[0043] Description of the accompanying drawings:

[0044] 10. Three-dimensional touch module; 11. Control module; 12. Three-dimensional touch assembly; 121. Cover plate; 122. Two-dimensional input assembly; 123. Pressure sensing assembly; 124. Transmitting electrode layer; 131. First adhesive layer; 132. Second adhesive layer; 133. Third adhesive layer; 141. First bearing layer; 142. Second bearing layer; 143. Third bearing layer; 1221. Receiving electrode layer; 1231. Pressure layer; 1232. Conductive layer. [Specific implementation method]

[0045] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0047] See also Figure 4 Combined with Figure 5 A three-dimensional touch module 10 provided in the first embodiment of the present invention includes a control module 11 and a three-dimensional touch assembly 12. The control module 11 is electrically connected to the three-dimensional touch assembly 12 to transmit a signal output by the three-dimensional touch assembly 12 to the control module 11.

[0048] The three-dimensional touch assembly 12 includes a cover plate 121, a first adhesive layer 131, a two-dimensional input assembly 122, a transmitting electrode layer 124, and a pressure sensing assembly 123, which are sequentially stacked. The two-dimensional input assembly 122 includes a receiving electrode layer 1221 and a second adhesive layer 132, which are stacked; and the pressure sensing assembly 123 includes a third adhesive layer 133, a pressure layer 1231, and a conductive layer 1232, which are stacked.

[0049] Specifically, the two-dimensional input assembly 122 is used to generate and output a first output signal, the pressure sensing assembly 123 is used to generate and output a second output signal, and the emitting electrode layer 124 is used to receive an input signal.

[0050] The control module 11 is electrically connected to the two-dimensional input assembly 122 and the pressure sensing assembly 123 respectively, so as to receive a first output signal output by the two-dimensional input assembly 122 and a second output signal output by the pressure sensing assembly 123. Furthermore, the control module 11 can determine the touch position through the received first output signal and determine the pressure value through the second output signal.

[0051] The cover plate 121 can be identified as a touch cover plate on our traditional three-dimensional touch assembly 12. The so-called cover plate 121 includes a touch operation surface and a component installation surface. The touch operation surface is used for touch operation by fingers or stylus, and the component installation surface is used to install touch electrode components or display modules. The cover plate 121 can be made of glass, or PEEK (polyetheretherketone), PI (Polyimide), PET (polyethyleneterephthalate), PC (polycarbonate), PES (polyethylene succinate), PMMA (polymethyl methacrylate) or any composite of the two.

[0052] The first adhesive layer 131 , the second adhesive layer 132 , and the third adhesive layer 133 may be made of OCA (Optical Clear Adhesive) or LOCA (Liquid Optical Clear Adhesive).

[0053] As an implementation, the emitting electrode layer 124 may be shared by the two-dimensional input assembly 122 and the pressure sensing assembly 123 .

[0054] Please continue reading Figure 4 Combined with Figure 5 In this embodiment, the two-dimensional input assembly 122 is electrically connected to the control module 11 through the receiving electrode layer 1221 , so that the control module 11 can receive the first output signal output by the receiving electrode layer 1221 .

[0055] The pressure sensing assembly 123 is electrically connected to the control module 11 through the conductive layer 1232 , so that the control module 11 can receive the second output signal output by the conductive layer 1232 .

[0056] Specifically, the first output signal output by the receiving electrode layer 1221 may be a capacitive sensing signal, a resistive signal or an ultrasonic signal. In the preferred embodiment, the first output signal is a capacitive sensing signal. The second output signal output by the conductive layer 1232 is a piezoelectric signal, which is a piezoelectric signal generated by the deformation of the pressure layer 1231 under force, and then transmitted to the conductive layer 1232 and output by the conductive layer 1232.

[0057] In this embodiment, the material used for the emitting electrode layer 124 and the receiving electrode layer 1221 is indium tin oxide (ITO). Because it has good conductivity and transparency, this material is used as the emitting electrode layer 124 and the receiving electrode layer 1221. While meeting functional requirements, it can also minimize the impact on the display effect of the three-dimensional touch assembly 12.

[0058] As an implementation manner, the thickness of the transmitting electrode layer 124 and the receiving electrode layer 1221 is 35um-180um; further, the thickness of the transmitting electrode layer 124 and the receiving electrode layer 1221 may also be 50um-150um; specifically, the thickness of the transmitting electrode layer 124 and the receiving electrode layer 1221 may be 50um, 60um or 75um, etc. In the preferred embodiment, the thickness of the transmitting electrode layer 124 and the receiving electrode layer 1221 is 50um.

[0059] The material used for the pressure layer 1231 may be lithium gallate, lithium germanate, piezoelectric ceramics, polyvinylidene fluoride or ink, etc.; in the preferred embodiment, the material used for the pressure layer 1231 is polyvinylidene fluoride (PVDF, Polyvinylidene Fluoride), which is prepared as the pressure layer 1231 by utilizing the principle that the deformation of the polyvinylidene fluoride film can generate piezoelectric induction, so that when in use, the pressure layer 1231 can generate a piezoelectric signal when it is deformed due to pressure.

[0060] The conductive layer 1232 may be a nanosilver conductive layer, a metal grid or an indium tin oxide semiconductor transparent conductive film (ITO film). In this embodiment, the conductive layer 1232 is a nanosilver conductive layer 1232. In a preferred solution of this embodiment, the pressure layer 1231 is made of polyvinylidene fluoride with good light transmittance, and is matched with the nanosilver conductive layer 1232, so that the pressure sensing assembly 123 has good light transmittance, which can effectively reduce the impact on the display effect of the three-dimensional touch assembly 12.

[0061] Please continue reading Figure 4 and Figure 5The process of using the three-dimensional touch module 10 provided by the present invention to detect touch position and pressure can be referred to as follows: when a finger or a stylus operates on the cover plate 121, the transmitting electrode layer 124 receives the input signal, and then the receiving electrode layer 1221 of the two-dimensional input assembly 122 generates a first output signal based on the specific operation signal and outputs it to the control module 11; the pressure layer 1231 of the pressure sensing assembly 123 is deformed due to the pressure, and then generates a second output signal, and the second output signal is output to the control module 11 by the conductive layer 1232; the control module 11 is electrically connected to the two-dimensional input assembly 122 and the pressure sensing assembly 123 to obtain the first output signal output by the two-dimensional input assembly 122 and the second output signal output by the pressure sensing assembly 123; then, the control module 11 processes the obtained first output signal and the second output signal to obtain the touch position corresponding to the first output signal and the pressure value corresponding to the second output signal.

[0062] It can be understood that, in the above process, the output of the first output signal and the second output signal can be performed in a simultaneous sequence or in a separate time sequence.

[0063] Specifically, see Figure 6 When the first output signal and the second output signal are output in the same sequence, the specific implementation is that the transmitting electrode layer 124 receives the input signal, the receiving electrode layer 1221 generates a capacitive sensing signal based on the specific operation signal, and outputs it to the control module 11 to complete the detection of the touch position. At the same time, the piezoelectric signal generated by the conductive layer 1232 is transmitted to the control module 11 to complete the detection of the pressure value.

[0064] See also Figure 7 When the first output signal and the second output signal are output in a time sequence, the specific implementation scheme is that in the first time sequence, the emitting electrode layer 124 receives the input signal, and the receiving electrode layer 1221 generates a capacitive sensing signal based on the specific operation signal, and outputs it to the control module 11 to complete the detection of the touch position; in the second time sequence, the emitting electrode layer 124 and the receiving electrode layer 1221 are grounded, and the pressure layer 1231 is deformed due to pressure to generate a piezoelectric signal, and the piezoelectric signal is transmitted to the control module 11 by the conductive layer 1232 to complete the detection of the pressure value.

[0065] As an implementation mode, when the first output signal and the second output signal are output in separate time sequences, there is no time interval between the first time sequence and the second time sequence, that is, after the steps in the first time sequence are completed, the steps in the second time sequence start immediately.

[0066] As another embodiment, when the first output signal and the second output signal are output in a separate sequence, a time interval is set between the first sequence and the second sequence, that is, after the steps in the first sequence are completed, the steps in the second sequence are started after a preset time interval; wherein the interval time can be 0.05S, 0.1S or 0.3S, without specific limitation.

[0067] See also Figure 8 As a variant implementation, the pressure sensing assembly 123 can be disposed between the cover plate 121 and the two-dimensional input assembly 122. That is, the three-dimensional touch assembly 12 includes a cover plate 121, a first adhesive layer 131, a pressure sensing assembly 123, a transmitting electrode layer 124, and a two-dimensional input assembly 122 that are sequentially stacked. The pressure sensing assembly 123 includes a stacked conductive layer 1232, a pressure layer 1231, and a second adhesive layer 132; the two-dimensional input assembly 122 includes a stacked third adhesive layer 133 and a receiving electrode layer 1221.

[0068] See also Fig. 9 As another variant implementation, the three-dimensional touch assembly 12 includes a cover plate 121, a first adhesive layer 131, a two-dimensional input assembly 122, a transmitting electrode layer 124, and a pressure sensing assembly 123 which are sequentially stacked. The two-dimensional input assembly 122 includes a receiving electrode layer 1221, a first bearing layer 141, and a second adhesive layer 132 which are stacked; the pressure sensing assembly 123 includes a second bearing layer 142, a third adhesive layer 133, a pressure layer 1231, a conductive layer 1232, and a third bearing layer 143 which are stacked.

[0069] The material of the first bearing layer 141, the second bearing layer 142, and the third bearing layer 143 can be a flexible substrate or a rigid substrate, such as glass, tempered glass, sapphire glass, PI (polyimide), PC (polycarbonate), polyethersulfone (PES), polymethyl methacrylate (PMMA), acrylic, polyacrylonitrile-butadiene-styrene (ABS), polyamide (PA), polybenzimidazole polybutylene (PB), polybutylene terephthalate (PBT), polyester (PE), polyetheretherketone (PEEK), polyetherimide (PEI), polyetherimide, polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS), polytetrafluoroethylene (PTFE), polyurethane (PU) or polyvinyl chloride (PVC) L-type polylactic acid (PLLA). In this embodiment, the material of the bearing layer is polyethylene terephthalate (PET).

[0070] As another variation, when the material used for the pressure layer 1231 is polyvinylidene fluoride (PVDF) and the conductive layer 1232 is a nanosilver conductive layer, the third bearing layer 143 can be omitted.

[0071] See also Fig.10 A detection method of a three-dimensional touch module provided in a second embodiment of the present invention is applied to the three-dimensional touch module 10 provided in the first embodiment. The three-dimensional touch module 10 includes a control module 11, a two-dimensional input assembly 122, an emission electrode layer 124, and a pressure sensing assembly 123, and includes the following steps:

[0072] Step S1, providing an input signal to the transmitting electrode 124 layer;

[0073] Step S2, the two-dimensional input assembly 122 outputs a first output signal and transmits it to the control module 11; the pressure sensing assembly 123 outputs a second output signal and transmits it to the control module 11;

[0074] In step S3 , the control module 11 confirms the touch position according to the first output signal; and the control module 11 confirms the pressure value according to the second output signal.

[0075] Specifically, in the above step S2, the first output signal and the second output signal are independent of each other.

[0076] In this embodiment, the first output signal corresponds to a capacitive sensing signal of a touch position, and its detection method includes capacitive detection; the second output signal corresponds to a piezoelectric signal of a pressure value, and its detection method includes piezoelectric detection.

[0077] As an implementation manner, the two-dimensional input assembly 122 and the pressure sensing assembly 123 share the emitting electrode layer 124 .

[0078] When the first output signal and the second output signal are output in the same sequence, step S3 includes the following steps:

[0079] In step Sa, the control module 11 receives the capacitive sensing signal output by the two-dimensional input assembly 122 to detect the touch position; at the same time, the control module 11 receives the piezoelectric signal generated by the pressure sensing assembly 123 to detect the pressure value.

[0080] See also Fig.11 , when the first output signal and the second output signal are output in a time sequence, step S3 includes the following steps:

[0081] Step S1, the control module 11 receives the capacitive sensing signal output by the two-dimensional input assembly 122 to confirm the touch position;

[0082] Step Sj, the two-dimensional input assembly 122 and the emitting electrode layer 124 are grounded; and

[0083] In step Sk, the control module 11 receives the piezoelectric signal output by the pressure sensing assembly 123 to confirm the pressure value.

[0084] Specifically, in this embodiment, the two-dimensional input assembly 122 also includes a receiving electrode layer 1221; the pressure sensing assembly 123 also includes a superimposed pressure layer 1231 and a conductive layer 1232, and the pressure layer 1231 is used to generate a piezoelectric signal and transmit it to the conductive layer 1232, which is output by the conductive layer 1232.

[0085] In this embodiment, the two-dimensional input assembly 122 is a capacitive input assembly. As a variant implementation, the two-dimensional input assembly 122 can also be a resistive input assembly or an ultrasonic input assembly.

[0086] To further illustrate the beneficial effects of the three-dimensional touch module 10 provided by the present invention compared with the prior art, the following test results can be referred to. Fig.12 and Figure 3 , the horizontal axis is the pressure value and the vertical axis is the voltage difference. Fig.12 , using the three-dimensional touch module 10 provided by the first embodiment of the present invention and the detection method of the three-dimensional touch module 10 provided by the second embodiment of the present invention, as the pressure applied by the finger or the stylus on the cover increases, the piezoelectric signal detected by the control module 11 changes greatly. When the pressure value reaches 40g, the voltage difference corresponds to 0.13V; Figure 3 According to the prior art, as the pressure exerted by the finger or stylus on the cover increases, the change of the piezoelectric signal detected by the control module 11 is relatively small. When the pressure value is 40g, the change of the voltage difference is only 0.042V.

[0087] Please continue reading Fig.12 In the present invention, when the pressure value is between 0-60g, as the pressure value increases, the change of the voltage difference is more obvious. For every 10g increase in the pressure value, the change of the voltage difference is greater than 0.01V; Figure 3 In the prior art, when the pressure value is between 0-60g, the change in voltage difference is less than 0.01V for every 10g increase in the pressure value.

[0088] It can be concluded from the above two sets of data that, compared with the prior art, the three-dimensional touch module 10 provided by the present invention is more sensitive to the detection of pressure values ​​and is relatively more accurate.

[0089] Compared with the prior art, the three-dimensional touch module and the detection method thereof of the present invention have the following advantages:

[0090] 1. By setting a two-dimensional input assembly and a pressure sensing assembly in the three-dimensional touch module, when the three-dimensional touch module is in use, the two-dimensional input assembly and the pressure sensing assembly can respectively output a first output signal and a second output signal, and then the control module directly analyzes the first output signal and the second output signal respectively to obtain the touch position corresponding to the first output signal and the pressure value corresponding to the second output signal, and reduces the configuration requirements for the control module, thereby effectively reducing the production and use costs of the three-dimensional touch module.

[0091] 2. The first output signal and the second output signal are independent of each other, which can effectively reduce the interference between the two signals during the signal extraction process of the control module and improve the accuracy of signal extraction.

[0092] 3. The first output signal corresponds to the touch position, and the second output signal corresponds to the pressure value. By setting two types of signals, the difficulty of signal processing by the control module is greatly reduced, so that more different types of control modules can be adapted to the three-dimensional touch assembly, that is, it can make the application scope of the three-dimensional touch assembly wider, and can also effectively reduce the production cost and use cost of the control module.

[0093] 4. The two-dimensional input assembly and the pressure sensing assembly share the same emitting electrode layer, so as to configure different input signals through the emitting electrode layer, thereby realizing the generation of the first output signal and the second output signal in a time-sequential or simultaneous manner.

[0094] 5. The control module detects and processes the first output signal and the second output signal simultaneously, which can effectively improve the response speed of the three-dimensional touch assembly.

[0095] 6. The control module detects and processes the first output signal and the second output signal in a time-sequential manner, so that the control module can detect the two signals more accurately. At the same time, the time-sequential detection and processing method has lower configuration requirements for the control module, which can effectively reduce the production and use costs of the three-dimensional touch assembly.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection method of a three-dimensional touch module, applied to the three-dimensional touch module, the three-dimensional touch module comprising a control module, a two-dimensional input assembly including a receiving electrode layer, a transmitting electrode layer and a pressure sensing assembly, the receiving electrode layer is defined as a first electrode, the transmitting electrode layer is defined as a second electrode, and is characterized in that: It includes the following steps: Step S1, providing an input signal to the emitting electrode layer disposed between the two-dimensional input assembly and the pressure sensing assembly, wherein the two-dimensional input assembly and the pressure sensing assembly share the emitting electrode layer; Step S2, outputting a first output signal through the receiving electrode layer of the two-dimensional input assembly and transmitting the signal to a control module; The second output signal is outputted through the third electrode and transmitted to the control module, the third electrode is the conductive layer of the pressure sensing assembly, and contacts the pressure layer of the pressure sensing assembly, the second electrode is arranged between the first electrode and the third electrode, the pressure layer has a first surface and a second surface, the conductive layer is superimposed on the first surface, and the second output signal is transmitted to the control module by the pressure sensing assembly, wherein the first surface faces the conductive layer and faces away from the cover of the three-dimensional touch module; In step S3, the control module confirms the touch position according to the first output signal; and the control module confirms the pressure value according to the second output signal, wherein when the first output signal and the second output signal are output simultaneously, step S3 includes: In step Sa, the control module receives the first output signal output by the receiving electrode layer of the two-dimensional input assembly to complete the detection of the touch position; at the same time, the control module receives the second output signal generated by the pressure sensing assembly to complete the detection of the pressure value.

2. The detection method of the three-dimensional touch module according to claim 1, characterized in that: The first output signal and the second output signal are independent of each other.

3. The detection method of the three-dimensional touch module according to claim 1, characterized in that: The two-dimensional input assembly is a capacitive input assembly, a resistive input assembly or an ultrasonic input assembly.

4. The detection method of the three-dimensional touch module according to claim 1, wherein: The first output signal corresponds to a capacitive sensing signal of a touch position; the second output signal corresponds to a piezoelectric signal of a pressure value.

5. The detection method of the three-dimensional touch module according to claim 4, characterized in that: When the first output signal and the second output signal are output in a time sequence, step S3 includes the following steps: Step S1, the control module receives the capacitive sensing signal output by the two-dimensional input assembly to confirm the touch position; Step Sj, the two-dimensional input assembly and the emitting electrode layer are grounded; and In step Sk, the control module receives the piezoelectric signal output by the pressure sensing assembly to confirm the pressure value.

6. The detection method of the three-dimensional touch module according to claim 1, wherein: The conductive layer is a nano silver conductive layer, a metal grid or an indium tin oxide semiconductor transparent conductive film.

7. The detection method of the three-dimensional touch module according to claim 1, wherein: The conductive layer is a nano silver conductive layer.

8. The detection method of the three-dimensional touch module according to claim 1, wherein: The conductive layer is a metal grid.

9. The detection method of the three-dimensional touch module according to claim 1, wherein: The conductive layer is an indium tin oxide semiconductor transparent conductive film.

10. A three-dimensional touch module, characterized in that: It includes a control module and a three-dimensional touch control assembly electrically connected thereto; The three-dimensional touch control assembly comprises: Cover plate; A two-dimensional input assembly is disposed below the cover plate, comprising: a first electrode, which is a receiving electrode layer, and the receiving electrode layer is used to receive and output a first output signal, and the first output signal is generated by providing an input signal to a second electrode, which is a transmitting electrode layer; a pressure sensing assembly, disposed below the cover plate, comprising a pressure layer having a first surface and a second surface and a third electrode, wherein the third electrode is a conductive layer superimposed on the first surface, wherein the first surface faces the conductive layer and faces away from the cover plate, and the second electrode is disposed between the first electrode and the third electrode, the two-dimensional input assembly and the pressure sensing assembly share a transmitting electrode layer, the pressure layer is connected to the transmitting electrode layer, the pressure layer is used to generate a second output signal, and the conductive layer is used to receive and output the second output signal; Among them, when the first output signal and the second output signal are output simultaneously, the transmitting electrode layer receives the input signal, the receiving electrode layer outputs the first output signal to the control module to complete the detection of the touch position, and the second output signal generated by the conductive layer relative to the control module is transmitted to the control module to complete the detection of the pressure value.

11. The three-dimensional touch module according to claim 10, wherein: When the first output signal and the second output signal are output in separate time sequences; within the first time sequence, the transmitting electrode layer receives the input signal, and the receiving electrode layer outputs the first output signal to the control module to complete the detection of the touch position; within the second time sequence, the transmitting electrode layer and the receiving electrode layer are grounded, and the conductive layer transmits the second output signal to the control module to complete the detection of the pressure value.

12. The three-dimensional touch module according to claim 10, wherein: The first output signal is a capacitive sensing signal, a resistance signal or an ultrasonic signal, and the second output signal is a piezoelectric signal.

13. The three-dimensional touch module according to claim 10, wherein: The pressure layer is located between the two-dimensional input assembly and the conductive layer.

14. The three-dimensional touch module according to claim 10, wherein: The pressure sensing assembly is located between the cover plate and the two-dimensional input assembly.

15. The three-dimensional touch module according to claim 14, wherein: The pressure layer is located between the two-dimensional input assembly and the conductive layer.

16. The three-dimensional touch module according to claim 10, characterized in that: include: a first adhesive layer between the receiving electrode layer and the transmitting electrode layer; as well as A second adhesive layer is provided between the emitter electrode layer and the pressure layer.

17. The three-dimensional touch module according to claim 10, wherein: The first output signal is an ultrasonic signal, and the second output signal is a piezoelectric signal.

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