CN108845724B - Capacitive key module with function of preventing mistaken touch - Google Patents
Capacitive key module with function of preventing mistaken touch Download PDFInfo
- Publication number
- CN108845724B CN108845724B CN201810954585.9A CN201810954585A CN108845724B CN 108845724 B CN108845724 B CN 108845724B CN 201810954585 A CN201810954585 A CN 201810954585A CN 108845724 B CN108845724 B CN 108845724B
- Authority
- CN
- China
- Prior art keywords
- electrode
- layer
- button module
- electrode layer
- capacitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 79
- 238000003825 pressing Methods 0.000 claims abstract description 70
- 239000003990 capacitor Substances 0.000 claims abstract description 50
- 230000008859 change Effects 0.000 claims abstract description 38
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 23
- 230000009471 action Effects 0.000 claims description 19
- 230000006698 induction Effects 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000012811 non-conductive material Substances 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 15
- 238000013461 design Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
Abstract
The invention provides a capacitive key module with a function of preventing mistaken touch. The capacitance type key module comprises a contact layer, a first electrode layer, a second electrode layer and an elastic layer. The first electrode of the first electrode layer and the second electrode of the second electrode layer form a first sensing capacitor. The second electrode and the third electrode of the second electrode layer form a second sensing capacitor. When the elastic layer is deformed by pressure to change the first sensing capacitor, a pressing signal is generated according to the capacitance value change of the first sensing capacitor. When the conductor contacts or is close to the contact layer to cause the second sensing capacitor to change, a displacement signal is generated according to the change of the capacitance value of the second sensing capacitor. The invention can enable the intelligent device applying the capacitive key module to execute different functions and can avoid the functions from being touched by a user by mistake.
Description
The present application is a divisional application of an invention patent application "smart device with function of preventing erroneous touch" filed on 2015, 20/1 and application No. 201510027460.8.
Technical Field
The present invention relates to a capacitive key module, and more particularly, to a capacitive key module with a function of preventing a touch error.
Background
In recent years, smart devices such as mobile phones, tablet computers, and the like have been widely used because of their convenience. Smart devices often have at least one key, which is typically located on the side of the smart device. The user can operate the intelligent device through the key, such as unlocking the screen of the intelligent device, adjusting the volume of the intelligent device and the like.
The keys provided on conventional smart devices can be roughly classified into two categories: mechanical keys and capacitive keys.
The mechanical key is characterized in that the mechanical key is triggered by a switch. Under a normal state, the switch is propped by the tenon to electrically isolate the specific conductor, so that no signal is triggered. When a user applies force to the mechanical key, the switch is pressed down and electrically connected with the specific conductor, and then the signal is triggered. Mechanical keys are prone to failure due to repeated presses.
The principle of the capacitive button is to change a tiny capacitance value in the capacitive button by using a human body capacitance effect, so that the control chip detects the tiny change of the capacitance value to judge whether the capacitive button is pressed down. Although the capacitive key is less likely to fail due to repeated contact, the capacitive key is more likely to be touched by mistake than a mechanical key. For example, when the user places the smart device in a backpack or a pocket, the button may contact other objects to change the capacitance value, so as to be triggered, and further, the screen of the smart device is opened or the volume is adjusted.
The above situation of triggering the key function by a wrong touch is contrary to the intention of the user, and therefore, a design of the capacitive key module is required, which can prevent the capacitive key module from being triggered by the wrong touch and can avoid the situation that the key has a fault due to multiple times of pressing.
Disclosure of Invention
The present invention is directed to a capacitive key module with a function of preventing a touch error, which is capable of sending a pressing signal and a displacement signal, and using the sent pressing signal as a criterion for determining whether an intelligent device triggers a specific function, so as to avoid or reduce the occurrence of a touch error triggering the key function.
In order to solve the above technical problems, one of the technical solutions of the present invention is to provide a capacitive button module with a function of preventing a touch error, where the capacitive button module is applied to an intelligent device, and the capacitive button module is electrically connected to a control module to control the intelligent device through the control module. The first electrode layer includes at least one first electrode. The second electrode layer is disposed below the contact layer and includes at least one second electrode and at least one third electrode. The elastic layer is arranged between the first electrode layer and the second electrode layer and is used for generating deformation when receiving pressure so as to change a distance between the first electrode layer and the second electrode layer. The first electrode and the second electrode form a first sensing capacitor, the second electrode and the third electrode form a second sensing capacitor, when the elastic layer deforms under the pressure to change the first sensing capacitor, a pressing signal is generated according to the change of the first sensing capacitor, and when a conductor contacts or is close to the contact layer to change the second sensing capacitor, a displacement signal is generated according to the change of the capacitance value of the second sensing capacitor. The control module receives the pressing signal and the displacement signal generated by the capacitive key module, so that the control module correspondingly controls the intelligent device according to the pressing signal and the displacement signal.
Preferably, the capacitance value change generated by the first sensing capacitor corresponds to the pressing force received by the elastic layer so as to generate the pressing signal, and the control module controls the intelligent device according to the corresponding pressing signal and the displacement signal when receiving the displacement signal.
Preferably, the second electrode is a driving electrode, and the first electrode and the third electrode are sensing electrodes; or the second electrode is a sensing electrode, and the first electrode and the third electrode are driving electrodes.
Preferably, the number of the driving electrodes is greater than or equal to 1, and the number of the sensing electrodes is greater than 1.
Preferably, the second electrode layer includes a plurality of second electrodes and a plurality of third electrodes, a portion of the plurality of second electrodes have different areas and a portion of the plurality of third electrodes have different areas.
Preferably, when the first sensing capacitance changes over a first change threshold, the second electrode or the first electrode generates the pressing signal.
Preferably, when a processing unit of the control module or the capacitive button module determines that the pressing signal is generated, the processing unit instructs the control unit to control the intelligent device to execute the specific action according to the displacement signal within a fixed time.
Preferably, when the second sensing capacitance variation exceeds a second variation threshold, the second electrode or the third electrode generates the displacement signal, and the processing unit calculates a displacement speed according to the displacement signal.
Preferably, when the processing unit determines that a displacement rate of the displacement speed exceeds a rate threshold, the processing unit instructs the control unit to control the intelligent device to execute the specific action according to a displacement direction of the displacement speed.
Preferably, the specific action comprises unlocking the smart device or adjusting the volume of the smart device.
Preferably, the capacitive button module further includes a flexible board, the flexible board is used for disposing the first electrode layer and the second electrode layer, wherein the contact layer is a portion of the flexible board.
Preferably, the elastic layer is composed of an elastic material.
Preferably, the elastic layer is composed of at least one elastic element, and two ends of the elastic element are respectively coupled to the first electrode layer and the second electrode layer.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
Fig. 1A is a schematic view of a capacitive button module applied to an intelligent device according to an embodiment of the present invention.
Fig. 1B is a schematic diagram of a capacitive key module according to an embodiment of the invention when pressed.
Fig. 2 is a structural diagram of a capacitive button module according to an embodiment of the present invention.
Fig. 3A to fig. 3B are schematic diagrams illustrating a manufacturing process of a capacitive key module according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a capacitive button module according to another embodiment of the invention.
Fig. 5 is a schematic diagram of an electrode distribution of the capacitive button module according to the embodiment of the invention.
Fig. 6 is a schematic diagram of an electrode distribution of a capacitive button module according to another embodiment of the present invention.
Fig. 7A to 7B are respectively architecture diagrams of a capacitive button module according to another embodiment of the invention.
Fig. 8 is a schematic diagram of a capacitive button module according to another embodiment of the invention.
Detailed Description
The following is a description of embodiments of the disclosure related to a capacitive key module with a function of preventing erroneous touch according to specific embodiments, and those skilled in the art can understand the advantages and effects of the disclosure from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.
Referring to fig. 1A, fig. 1A is a schematic view illustrating a capacitive button module applied to an intelligent device according to an embodiment of the present invention. The smart device 1 includes a capacitive button module 10 and a control module 11. The capacitive button module 10 is disposed on the surface of the intelligent device 1, and the capacitive button module 10 is preferably disposed on a side of the intelligent device 1 for a user to operate the intelligent device 1. The capacitive key module 10 may be, for example, an unlocking switch or a volume control switch of the smart device 1, but is not limited thereto. The user can generate a pressing signal and a displacement signal by operating the capacitive button module 10. In addition, the capacitive button module 10 includes a first electrode layer 101, an elastic layer 102, a second electrode layer 103, and a contact layer 104. The detailed structure of the capacitive button module 10 will be described in detail in the following paragraphs.
Referring to fig. 1B, fig. 1B is a schematic view illustrating a capacitive key module according to an embodiment of the invention when the capacitive key module is pressed. The capacitive button module 10 can be operated by a user through a conductor (e.g., a finger).
Referring to fig. 2, fig. 2 is a structural diagram of a capacitive key module according to an embodiment of the invention. The capacitive key module 10 includes a first electrode layer 101, an elastic layer 102, a second electrode layer 103, and a contact layer 104. The contact layer 104 is preferably made of a non-conductive material for allowing a user to perform a displacement operation and a pressing operation thereon.
The first electrode layer 101 has at least one first electrode (not shown in fig. 2). The second electrode layer 103 is disposed under the contact layer 104, and the second electrode layer 103 includes at least one second electrode (not shown in fig. 2) and at least one third electrode (not shown in fig. 2). The first electrode and the second electrode form a first sensing capacitor, and the first electrode or the second electrode is used for generating a pressing signal according to the capacitance value change of the first sensing capacitor. The second electrode and the third electrode form a second sensing capacitor, and the second electrode or the third electrode is used for generating a displacement signal according to the capacitance value change of the second sensing capacitor.
The elastic layer 102 is disposed between the first electrode layer 101 and the second electrode layer 103. The elastic layer 102 is composed of an electrically non-conductive elastic material, such as rubber or sponge. When a user presses the capacitive button module 10, the elastic layer 102 deforms to change a distance between the first electrode layer 101 and the second electrode layer 103, thereby affecting a first sensing capacitance between the first electrode and the second electrode.
In detail, when the user presses the capacitive button module 10 with his finger to perform a pressing operation, the distance between the first electrode and the second electrode corresponding to the pressed portion of the user is changed, so as to change the first sensing capacitance between the first electrode and the second electrode. The area pressed by the finger can be calculated through the capacitance value change generated by the first sensing capacitor, and a pressing signal is correspondingly generated. When a finger of a user touches or approaches the contact layer 104 to perform a displacement operation, the second sensing capacitances between the corresponding second and third electrodes are affected, and further, the capacitance values generated by the second sensing capacitances are affected. The area through which the finger passes can be calculated through the capacitance value change generated by the second sensing capacitors, and a displacement signal is correspondingly generated.
Additionally, the force of the user pressing the capacitive button module 10 can be further determined by the number of the first electrodes or the second electrodes that are affected when the user presses the capacitive button module 10. When the number of the affected first electrodes or the second electrodes is larger, which indicates that the user presses the capacitive button module 10 with a larger pressure, the first electrodes or the second electrodes will generate a pressing signal. When the number of the affected first electrodes or second electrodes is small, it indicates that the pressure of the user pressing the capacitive button module 10 is small, and the first electrodes or the second electrodes will not generate a pressing signal. That is, the pressure applied by the user can be determined according to the condition that the first electrode or the second electrode is pressed.
Therefore, when a user's finger presses the capacitive button module 10 (e.g., a block above the capacitive button module 10), the capacitive button module 10 generates a pressing signal according to a capacitance change of a first sensing capacitor (formed by a first electrode of the first electrode layer 101 and a second electrode of the second electrode layer 103). When a finger of a user touches the capacitive button module 10 and starts to slide (for example, the capacitive button module 10 slides from a block close to the upper side to a block below), the capacitive button module 10 generates a displacement signal according to a change in a capacitance value of a second sensing capacitor (formed by a second electrode and a third electrode of the second electrode layer 103). The control unit (not shown in fig. 1B) of the control module 11 receives the pressing signal or receives the pressing signal and the displacement signal, and then controls the intelligent device 1 to execute the corresponding action.
For example, when the capacitive button module 10 is used as an unlocking switch, a user can generate a pressing signal by pressing the capacitive button module 10. After the control module 11 receives the pressing signal, its control unit will control the smart device 1 to unlock its screen. Alternatively, the user can press and slide the capacitive button module 10 to generate the pressing signal and the displacement signal. After the control module 11 receives the pressing signal and the displacement signal, the control unit thereof controls the intelligent device 1 to unlock the screen thereof.
For another example, when the capacitive button module 10 is a volume control switch, the user also presses and slides the capacitive button module 10 to generate a pressing signal and a displacement signal. After the control module 11 receives the pressing signal and the displacement signal, the control unit thereof controls the intelligent device 1 to adjust the volume thereof. It should be noted that the above-mentioned functions corresponding to the capacitive key module 10 are only examples, and the present invention does not limit the functions corresponding to the capacitive key module 10. In the following embodiments, the capacitive button module 10 has functions of an unlock switch and a volume control switch.
Referring to fig. 3A to 3B, fig. 3A to 3B are schematic diagrams illustrating a manufacturing process of a capacitive key module according to an embodiment of the invention. The first electrode layer 101 and the second electrode layer 103 are directly formed on one flexible board 105, and are respectively formed on two sides of the bending region 1051 of the flexible board 105. After the elastic layer 102 is directly disposed on the first electrode layer 101, the flexible board 105 can be bent to form the structure shown in fig. 3B. It should be noted that, in the embodiment, the elastic layer 102 is disposed on the first electrode layer 101, but not limited thereto. In other embodiments, the elastic layer 102 can also be disposed on the second electrode layer 103, or disposed on both the first electrode layer 101 and the second electrode layer 103.
The portion of the flexible board 105 overlapping the second electrode layer 103 can further serve as a contact layer 104 for a user to perform displacement operation and pressing operation thereon. In other words, the contact layer 104 may be directly a part of the flexible board 105. Of course, the embodiment of the invention is not limited thereto, and the contact layer 104 may also be additionally disposed on a separate insulating layer on the portion of the flexible board 105 overlapping with the second electrode layer 103.
Fig. 4 is a schematic diagram of a capacitive button module according to another embodiment of the invention. The second electrode layer 103 of the present embodiment has at least one second electrode 1031 and at least one third electrode 1032, and the first electrode layer 101 has a first electrode (not shown in fig. 4). The second electrode 1031 and the third electrode 1032 are not conductive (electrically separated) with each other, and have a second sensing capacitance C2. The second electrode 1031 and the first electrode have a first inductive capacitance C1 therebetween.
The first electrode of the first electrode layer 101 may preferably be a driving electrode. The second electrode 1031 of the second electrode layer 103 may be a sensing electrode, and the third electrode 1032 may be a driving electrode. The driving electrode is used for sending out a driving signal, and the sensing electrode is used for correspondingly outputting a pressing signal or a displacement signal according to the capacitance value change of the first sensing capacitor C1 or the second sensing capacitor C2. The number of the driving electrodes may be only 1, but a plurality of driving electrodes may be provided according to different applications. The number of the sensing electrodes is preferably greater than 1, so as to be able to detect the first sensing capacitor C1 and the second sensing capacitor C2 at a plurality of positions.
When a user's finger presses the contact layer 104 and performs a pressing operation, a distance between the corresponding second electrode 1031 and the first electrode may be changed, so as to influence an electric field between the two electrodes and change a capacitance value of the first inductive capacitor C1 detected by the second electrode 1031. The force and position of the finger pressing can be determined according to the capacitance value change generated by the corresponding first sensing capacitor C1. When a finger of a user touches or approaches the contact layer 104 and performs a displacement operation, an electric field between the surrounding second electrode 1031 and the third electrode 1032 is affected, so as to change a capacitance value of the second sensing capacitor C2 detected by the corresponding second electrode 1031. The displacement direction and the displacement speed of the finger can be determined according to the capacitance value change generated by the corresponding second sensing capacitor C2.
In more detail, the contact layer 104 can be used for a user to perform a displacement operation and a pressing operation thereon. The elastic layer 102 is also disposed between the first electrode layer 101 and the second electrode layer 103 for generating deformation to change the distance between the first electrode layer 101 and the second electrode layer 103 when being pressed. The first electrode of the first electrode layer 101 and the third electrode 1032 of the second electrode layer 103 are driving electrodes. The second electrode 1031 of the second electrode layer 103 is an induction electrode. When the user performs a pressing operation, the second electrode 1031 is used to generate a pressing signal according to the capacitance variation of the first sensing capacitor C1. When the user performs a displacement operation, the second electrode 1031 is used for generating a displacement signal according to the capacitance variation of the second sensing capacitor C2.
When the second electrode 1031 detects that the capacitance value of the first sensing capacitor C1 is increasing, it can be determined that the finger pressing causes the distance between the first electrode layer 101 and the second electrode layer 103 to decrease, so that the capacitance value of the first sensing capacitor C1 is increasing. When the capacitance value of the first sensing capacitor C1 changes by more than a first change threshold, the corresponding second electrode 1031 will generate a pressing signal. It should be noted that the present invention is not limited to the value of the first variation threshold, and the user can set the first variation threshold according to the requirement.
On the other hand, when the capacitance value of the second sensing capacitor C2 detected by the second electrode 1031 shows a decreasing trend, it can be determined that the capacitance value of the second sensing capacitor C2 between the second electrode 1031 and the third electrode 1032 is decreased when a conductor (such as a finger) contacts or approaches the contact layer 104. When the capacitance value of the second sensing capacitor C2 changes by more than a second change threshold, the corresponding second electrode 1031 will generate a displacement signal. It should be noted that the present invention is not limited to the value of the second variation threshold, and the user can set the second variation threshold according to the requirement.
It should be noted that, in the embodiment of the invention, the second electrode 1031 is a sensing electrode, and the first and third electrodes 1032 are driving electrodes. However, the invention is not limited thereto. In other embodiments, the second electrode 1031 can be a driving electrode, and the first and third electrodes 1032 can be sensing electrodes. The present invention is not limited that the second electrode 1031 is necessarily a sensing electrode, and the first and third electrodes 1032 are necessarily driving electrodes. In addition, the number of the driving electrodes and the sensing electrodes is not limited in the present invention. In short, the number of the driving electrodes in the capacitive button module 10 is greater than or equal to 1, and the number of the sensing electrodes is greater than 1.
Referring to fig. 5 in conjunction with fig. 4, fig. 5 is a schematic diagram of electrode distribution of the capacitive button module according to the embodiment of the present invention. As can be seen from fig. 5, the first electrode layer 101 is disposed on one side of the flexible board 105, and the second electrode layer 103 is disposed on the other side corresponding to the first electrode layer 101. The first electrode layer 101 includes a first electrode 1011. The second electrode layer 103 includes a plurality of second electrodes 1031 and a plurality of third electrodes 1032, and the second electrodes 1031 and the third electrodes 1032 are arranged in a 4 × 4 matrix. The second electrode 1031 and the third electrode 1032 are electrically separated from each other. In the present embodiment, the second electrode 1031 is a sensing electrode, and the first electrode 1011 and the third electrode 1032 are driving electrodes. The bending region 1051 is used to provide the flexible board 105 to be directly bent to form the structure shown in fig. 3B. Incidentally, the number and arrangement of the second electrode 1031 and the third electrode 1032 are only illustrative, and are not intended to limit the present invention.
In the present embodiment, each of the second electrodes 1031 has the same area, and each of the third electrodes 1032 has the same area. However, the present invention is not limited by the sizes of the second electrode 1031 and the third electrode 1032. In other embodiments, a portion of the second electrode 1031 may have different areas, and a portion of the third electrode 1032 has different areas. In short, the user can design the number, size and arrangement of the second electrode 1031 and the third electrode 1032 according to the requirement.
The first electrode 1011, the second electrode 1031 and the third electrode 1032 are electrically connected to the control unit 111 of the control module through electrical traces (vias), respectively. The control unit 111 is configured to receive a pressing signal generated by the first electrode 1011 or the second electrode 1031 in a pressing operation, and receive a displacement signal generated by the second electrode 1031 or the third electrode 1032 in a displacement operation. When the control unit 111 receives the pressing signal or receives the pressing signal and the displacement signal, the control unit 111 controls the smart device 1 to perform a specific action, such as unlocking the smart device 1 or adjusting the volume of the smart device 1. That is, when the control unit 111 receives only the displacement signal without receiving the pressing signal, the control unit 111 does not control the smart device 1 to perform a specific action. In this way, the smart device 1 can effectively prevent the false touch.
Referring to fig. 6, fig. 6 is a schematic diagram of an electrode distribution of a capacitive key module according to another embodiment of the present invention. The electrode distribution of the capacitive key module 10' of fig. 6 is substantially similar to the capacitive key module 10 of fig. 5, and only the differences will be described below. Unlike the capacitive button module 10 of fig. 5, the first electrode layer of the capacitive button module 10 ' includes a plurality of first electrodes 1011 ', and the first electrodes 1011 ' are arranged in a 4 × 4 matrix. The first electrode 1011', the second electrode 1031, and the third electrode 1032 are also electrically connected to the control unit 111 of the control module through electrical traces (vias), so that the control unit 111 can receive the pressing signal and the displacement signal. Incidentally, the number and arrangement of the first electrodes 1011 are merely illustrative and not intended to limit the present invention. In addition, the present invention also does not limit that the size of the first electrode 1011 must be the same, and the user can design the first electrode layer according to the requirement.
The above description introduces the structure and function of the capacitive button module 10, and the function of preventing the smart device 1 from being touched by mistake will be further described below. As can be seen from the above, the control unit 111 controls the intelligent device 1 to execute the specific action only when receiving the pressing signal or receiving the pressing signal and the displacement signal.
Referring to fig. 1A, fig. 1B, fig. 4 and fig. 5 again, taking fig. 1A, fig. 1B, fig. 4 and fig. 5 as an example, when a finger of a user presses the contact layer 104, the distance between the first electrode layer 101 and the second electrode layer 103 is decreased, so that the capacitance of the first sensing capacitor C1 is increased. When the capacitance value of the first sensing capacitor C1 changes by more than a first change threshold, the corresponding first electrode 1011 or second electrode 1031 will generate a pressing signal (in this embodiment, the second electrode 1031 is a sensing electrode, so the pressing signal is generated by the second electrode 1031).
In this embodiment, when the control unit 111 receives the pressing signal, the control unit 111 controls the intelligent device 1 to perform a specific action. For example, the specific action may be to unlock the smart device 1, i.e. the user presses the capacitive button module 10 to cause the control unit 111 to unlock the screen of the smart device 1.
In another embodiment, the control unit 111 receives a displacement signal in addition to the pressing signal to unlock the screen of the smart device 1. For example, a user first presses the capacitive button module 10 to generate a pressing signal, and then a finger of the user slides on the contact layer 104 of the capacitive button module 10 to generate a displacement signal. When the control unit 111 receives the pressing signal and the displacement signal, the control unit 111 controls the smart device 1 to unlock the screen of the smart device 1.
In addition, in the embodiment, the control unit 111 may also control the intelligent device 1 to perform other specific actions according to the pressing signal and the displacement signal. When the processing unit (not shown) of the control module 11 determines that the pressing signal is generated, the processing unit instructs the control unit 111 to control the intelligent device 1 to execute a specific action according to the displacement signal within a fixed time.
In detail, when the finger of the user touches or approaches the contact layer 104, the capacitance value of the second sensing capacitor C2 detected by the second electrode 1031 shows a decreasing trend. When the capacitance value of the second sensing capacitor C2 changes by more than a second change threshold, the corresponding second electrode 1031 or third electrode 1032 will generate a displacement signal (in this embodiment, the second electrode 1031 is a sensing electrode, so the displacement signal is generated by the second electrode 1031). At this time, the processing unit of the control module 11 determines the displacement speed of the finger according to the number of the electrodes generating the displacement signal. The higher the number of electrodes, the faster the displacement speed of the finger. Conversely, a smaller number of electrodes indicates a slower displacement speed of the finger. It should be noted that the present invention is not limited to the length of the fixed time, and the user can design the length of the fixed time according to the requirement.
Then, the processing unit can further calculate the displacement speed and the displacement direction of the finger through the displacement speed of the finger. When the processing unit determines that the displacement rate of the finger exceeds the rate threshold, the processing unit outputs a determination signal to the control unit 111, where the determination signal indicates the displacement direction of the finger. The control unit 111 controls the intelligent device 1 to execute a specific action according to the pressing signal and the determination signal. It should be noted that the present invention does not limit the size of the speed threshold, and the user can design the size of the speed threshold according to the requirement.
For example, when the user wants to adjust the volume of the smart device 1, the user may first press the capacitive button module 10 to generate a pressing signal. After the processing unit of the control module 11 determines that the pressing signal is generated, the processing unit starts to calculate a fixed time. During the fixed time period, the user can slide on the contact layer 104 of the capacitive button module 10 through his finger to adjust the volume of the smart device 1.
In this embodiment, since the capacitive button module 10 is disposed on the left side of the smart device 1, the finger is defined to move from the upper block of the contact layer 104 to the lower block to turn down the volume of the smart device 1, and the finger is defined to move from the lower block of the contact layer 104 to the upper block to turn up the volume of the smart device 1. However, the present invention is not limited thereto, and the user can define the specific motion corresponding to the displacement direction of the finger by himself.
After the finger of the user slides on the contact layer 104 of the capacitive button module 10, the corresponding second electrode 1031 generates a displacement signal according to the capacitance variation of the second sensing capacitor C2. The processing unit then calculates the displacement rate and the displacement direction of the finger according to the displacement signal. When the processing unit determines that the displacement rate of the finger exceeds the rate threshold, the processing unit outputs a determination signal to the control unit 111. The control unit 111 adjusts the volume of the intelligent device 1 according to the pressing signal, the displacement signal and the determination signal.
Please note that, in the embodiment, the processing unit is disposed in the control module 11. However, the invention is not limited thereto. In other embodiments, the processing unit may also be disposed in the capacitive button modules 10 and 10'.
Referring to fig. 7A to 7B, fig. 7A to 7B are respectively schematic diagrams of a capacitive key module according to another embodiment of the present invention. The capacitive key module 70 of fig. 7A and the capacitive key module 70' of fig. 7B are similar to the capacitive key module 10 of fig. 2 in function and structure, and only differences will be described below. The difference between the capacitive key module 70, the capacitive key module 70' and the capacitive key module 10 is that the surface of the contact layer 104 of the capacitive key module 10 is a plane, and the surface of the contact layer 704 of the capacitive key module 70 is a convex surface. In addition, the surface of the contact layer 704 'of the capacitive button module 70' of fig. 7B is concave.
Referring to fig. 8, fig. 8 is a structural diagram of a capacitive key module according to another embodiment of the invention. The capacitive key module 80 of fig. 8 is similar in function and structure to the capacitive key module 10 of fig. 2, and only differences will be described below. The difference between the capacitive key module 80 and the capacitive key module 10 is that the capacitive key module 80 is not provided with an elastic layer (e.g., the elastic layer 102 in fig. 2). Instead, the capacitive button module 80 is provided with at least one elastic element 802. Two ends of the elastic element 802 are coupled to the first electrode layer 801 and the second electrode layer 803, respectively, for supporting the first electrode layer 801 and the second electrode layer 803. The elastic element 802 is a non-conductive material, such as rubber or sponge. Incidentally, the elastic element 802 is not limited in any way as long as it can deform when pressed and return to its original shape when the external force is removed.
In summary, the capacitive key module of the embodiment of the invention has the function of preventing the erroneous touch. When the control unit of the intelligent device receives the pressing signal or simultaneously receives the pressing signal and the displacement signal, the control unit correspondingly controls the intelligent device to execute a specific action. That is, the control unit does not perform a specific action when receiving only the displacement signal. When the capacitive button module of the intelligent device is pressed or slid carelessly, the intelligent device can judge the triggering action as false touch. Therefore, the intelligent device can effectively avoid the occurrence of false touch. On the other hand, due to the adoption of the relation of the elastic layer, the capacitive key module of the intelligent device is not prone to failure caused by multiple pressing like the traditional mechanical key.
On the other hand, the intelligent device according to the embodiment of the invention may further control the intelligent device to perform other actions, such as adjusting the volume, according to the pressing signal, the displacement signal and the displacement direction of the finger of the user. That is to say, the intelligent device of the embodiment of the invention can execute different functions through the capacitive key module, and the intelligent device can also prevent the user from mistakenly touching the functions
The disclosure is only a preferred embodiment of the invention, and is not intended to limit the scope of the claims, so that all technical equivalents and modifications using the contents of the specification and drawings are included in the scope of the claims.
Claims (13)
1. The utility model provides a capacitanc button module with prevent that mistake from touching function, this capacitanc button module is applied to an intelligent device, and wherein this capacitanc button module electric connection a control module to through this intelligent device of this control module control, its characterized in that, capacitanc button module includes:
a contact layer;
a first electrode layer including at least one first electrode;
a second electrode layer disposed below the contact layer and including at least one second electrode and at least one third electrode; and
the elastic layer is made of non-conductive materials, arranged between the first electrode layer and the second electrode layer and used for generating deformation when receiving pressure so as to change a distance between the first electrode layer and the second electrode layer;
the first electrode and the second electrode form a first induction capacitor, the first induction capacitor changes due to the change of the distance between the first electrode layer and the second electrode layer, the second electrode and the third electrode form a second induction capacitor, when the elastic layer deforms under the action of the pressure to change the distance between the first electrode layer and the second electrode layer, so that the first induction capacitor changes, a pressing signal is generated according to the change of the first induction capacitor, and when a conductor contacts or is close to the contact layer, so that the second induction capacitor changes, a displacement signal is generated according to the change of the capacitance value of the second induction capacitor;
the second electrode is a sensing electrode, the first electrode and the third electrode are driving electrodes, and the first electrode and the third electrode share the same second electrode.
2. The capacitive button module of claim 1, wherein a change in capacitance generated by the first sensing capacitor corresponds to a pressing force received by the elastic layer to generate the pressing signal, and the control module controls the smart device according to the pressing signal and the displacement signal when receiving the displacement signal.
3. The capacitive button module of claim 1, wherein the second electrode is a driving electrode, and the first electrode and the third electrode are sensing electrodes; or the second electrode is a sensing electrode, and the first electrode and the third electrode are driving electrodes.
4. The capacitive button module of claim 3, wherein a number of the driving electrodes is greater than or equal to 1, and a number of the sensing electrodes is greater than 1.
5. The capacitive button module as recited in claim 1, wherein the second electrode layer comprises a plurality of second electrodes and a plurality of third electrodes, wherein a portion of the plurality of second electrodes have different areas and a portion of the plurality of third electrodes have different areas.
6. The capacitive button module of claim 1, wherein the second electrode or the first electrode generates the pressing signal when the first sensing capacitance variation exceeds a first variation threshold.
7. The capacitive button module of claim 6, wherein when the processing unit of the control module or the capacitive button module determines that the pressing signal is generated, the processing unit instructs the control module to control the smart device to perform a specific action according to the displacement signal within a fixed time.
8. The capacitive button module of claim 7, wherein when the second sensing capacitance variation exceeds a second variation threshold, the second electrode or the third electrode generates the displacement signal, and the processing unit calculates a displacement speed according to the displacement signal.
9. The capacitive button module of claim 8, wherein when the processing unit determines that a displacement rate of the displacement speed exceeds a speed threshold, the processing unit instructs the control module to control the smart device to perform the specific action according to a displacement direction of the displacement speed.
10. The capacitive button module of any one of claims 7 or 8, wherein the specific action comprises unlocking the smart device or adjusting a volume of the smart device.
11. The capacitive button module of claim 1, further comprising a flexible board for disposing the first electrode layer and the second electrode layer, wherein the contact layer is a portion of the flexible board.
12. The capacitive button module as recited in claim 1, wherein the elastic layer is formed of an elastic material.
13. The capacitive button module as defined in claim 1, wherein the elastic layer comprises at least one elastic element, and two ends of the elastic element are coupled to the first electrode layer and the second electrode layer, respectively.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103106202 | 2014-02-24 | ||
| TW103106202 | 2014-02-24 | ||
| CN201510027460.8A CN104866149B (en) | 2014-02-24 | 2015-01-20 | Intelligent device with function of preventing false touch |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510027460.8A Division CN104866149B (en) | 2014-02-24 | 2015-01-20 | Intelligent device with function of preventing false touch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108845724A CN108845724A (en) | 2018-11-20 |
| CN108845724B true CN108845724B (en) | 2021-11-26 |
Family
ID=53912020
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410315533.9A Active CN104866147B (en) | 2014-02-24 | 2014-07-03 | Capacitive finger navigation module and manufacturing method thereof |
| CN201710645960.7A Pending CN107479775A (en) | 2014-02-24 | 2014-07-03 | Capacitive finger navigation module |
| CN201510027460.8A Active CN104866149B (en) | 2014-02-24 | 2015-01-20 | Intelligent device with function of preventing false touch |
| CN201810954585.9A Active CN108845724B (en) | 2014-02-24 | 2015-01-20 | Capacitive key module with function of preventing mistaken touch |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410315533.9A Active CN104866147B (en) | 2014-02-24 | 2014-07-03 | Capacitive finger navigation module and manufacturing method thereof |
| CN201710645960.7A Pending CN107479775A (en) | 2014-02-24 | 2014-07-03 | Capacitive finger navigation module |
| CN201510027460.8A Active CN104866149B (en) | 2014-02-24 | 2015-01-20 | Intelligent device with function of preventing false touch |
Country Status (2)
| Country | Link |
|---|---|
| CN (4) | CN104866147B (en) |
| TW (1) | TW201533644A (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI596522B (en) * | 2015-04-28 | 2017-08-21 | 禾瑞亞科技股份有限公司 | Touch sensitive panel, screen and electronic device |
| CN105224209A (en) * | 2015-09-25 | 2016-01-06 | 联想(北京)有限公司 | Electronic equipment and information processing method thereof |
| CN105487273A (en) | 2016-01-15 | 2016-04-13 | 京东方科技集团股份有限公司 | Display panel, drive method and manufacturing method thereof and display device |
| CN107357471A (en) * | 2016-05-09 | 2017-11-17 | 新益先创科技股份有限公司 | Sensing device further |
| DE102017107971B4 (en) * | 2017-04-12 | 2019-08-01 | Lisa Dräxlmaier GmbH | ARMUFLAGE FOR AN INTERIOR OF A MOTOR VEHICLE |
| CN107167069A (en) * | 2017-07-07 | 2017-09-15 | 魔玛智能科技（上海）有限公司 | Condenser type intelligence support surface height detecting device |
| CN107634747A (en) * | 2017-08-22 | 2018-01-26 | 苏州瀚瑞微电子有限公司 | A kind of method that button prevents false touch |
| CN109840026A (en) * | 2017-11-29 | 2019-06-04 | 比亚迪股份有限公司 | Method of toch control, touch key-press and automobile |
| CN109818602A (en) * | 2019-01-31 | 2019-05-28 | 华勤通讯技术有限公司 | A kind of pressure sensitivity key and its trigger the method for keypress function, electric terminal equipment |
| CN110134254B (en) | 2019-05-16 | 2021-08-17 | 上海艾为电子技术股份有限公司 | Terminal control system and method |
| CN112130002A (en) * | 2020-09-01 | 2020-12-25 | 珠海普林芯驰科技有限公司 | Capacitance sensing device, working method thereof and electronic equipment |
| CN112162478B (en) * | 2020-10-06 | 2023-06-02 | 嘉兴美茵钛传动科技有限公司 | Control method and control system for intelligent switching control right |
| CN112492435B (en) * | 2020-11-06 | 2023-03-10 | 珠海普林芯驰科技有限公司 | Side pressure type capacitance sensing device, working method thereof and electronic equipment |
| CN113176836A (en) * | 2021-05-25 | 2021-07-27 | 安徽华森九源光电科技有限公司 | Film key pressure detection method |
| TWI815784B (en) * | 2022-01-13 | 2023-09-11 | 大陸商宸鴻科技（廈門）有限公司 | Flexible display input device |
| TWI802222B (en) * | 2022-01-13 | 2023-05-11 | 大陸商宸鴻科技（廈門）有限公司 | Flexible display input device |
| US11775097B2 (en) | 2022-01-28 | 2023-10-03 | Tpk Touch Solutions (Xiamen) Inc. | Flexible display input device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339179A (en) * | 2010-07-16 | 2012-02-01 | 义隆电子股份有限公司 | Three-dimensional touch sensor and application method thereof |
| CN103076930A (en) * | 2011-10-25 | 2013-05-01 | 联胜（中国）科技有限公司 | Touch panel |
| CN103135876A (en) * | 2013-03-20 | 2013-06-05 | 上海鼎为软件技术有限公司 | Touch device, electronic device and touch control method of electronic device |
| CN103475919A (en) * | 2013-09-04 | 2013-12-25 | 深圳Tcl新技术有限公司 | Remote control method and system based on side face sliding touch and remote control |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009145554A (en) * | 2007-12-13 | 2009-07-02 | Yamaha Corp | Pressure sensor and data input apparatus |
| KR100943989B1 (en) * | 2008-04-02 | 2010-02-26 | (주)엠아이디티 | Capacitive Touch Screen |
| JP5123774B2 (en) * | 2008-07-25 | 2013-01-23 | 株式会社ジャパンディスプレイイースト | Input device and display device including the same |
| JP2011048541A (en) * | 2009-08-26 | 2011-03-10 | Tdk Corp | Touch panel-equipped display device |
| US9543948B2 (en) * | 2009-09-01 | 2017-01-10 | Microchip Technology Incorporated | Physical force capacitive touch sensors |
| CN102004573B (en) * | 2010-07-28 | 2014-01-01 | 深圳市汇顶科技股份有限公司 | Touch detection system and detection method thereof |
| KR101504648B1 (en) * | 2010-11-12 | 2015-03-20 | 주식회사 케이티 | Touch Panel |
| CN203025677U (en) * | 2012-01-13 | 2013-06-26 | 骏升科技(中国)有限公司 | Capacitive pressure sensing and converting device |
| US9459738B2 (en) * | 2012-03-06 | 2016-10-04 | Apple Inc. | Calibration for pressure effects on touch sensor panels |
| TWI478029B (en) * | 2012-05-23 | 2015-03-21 | Hung Ta Liu | Touch control method |
| CN102768604A (en) * | 2012-06-29 | 2012-11-07 | 京东方科技集团股份有限公司 | Capacitive embedded touch screen, as well as touch location method and display device thereof |
| CN102968235B (en) * | 2012-11-27 | 2015-12-02 | 深圳市汇顶科技股份有限公司 | The touch detecting method of touch sensor, system and touch control terminal |
| CN103091909B (en) * | 2013-01-29 | 2015-10-14 | 北京京东方光电科技有限公司 | A kind of touch-control 3D shows module and preparation method thereof and touch-control 3D display device |
| CN103235673B (en) * | 2013-04-11 | 2016-05-11 | 深圳市天微电子股份有限公司 | Detection method of touch screen and touch-screen |
-
2014
- 2014-07-03 CN CN201410315533.9A patent/CN104866147B/en active Active
- 2014-07-03 CN CN201710645960.7A patent/CN107479775A/en active Pending
-
2015
- 2015-01-16 TW TW104101495A patent/TW201533644A/en unknown
- 2015-01-20 CN CN201510027460.8A patent/CN104866149B/en active Active
- 2015-01-20 CN CN201810954585.9A patent/CN108845724B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339179A (en) * | 2010-07-16 | 2012-02-01 | 义隆电子股份有限公司 | Three-dimensional touch sensor and application method thereof |
| CN103076930A (en) * | 2011-10-25 | 2013-05-01 | 联胜（中国）科技有限公司 | Touch panel |
| CN103135876A (en) * | 2013-03-20 | 2013-06-05 | 上海鼎为软件技术有限公司 | Touch device, electronic device and touch control method of electronic device |
| CN103475919A (en) * | 2013-09-04 | 2013-12-25 | 深圳Tcl新技术有限公司 | Remote control method and system based on side face sliding touch and remote control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104866149B (en) | 2018-09-18 |
| CN104866147B (en) | 2018-01-23 |
| CN108845724A (en) | 2018-11-20 |
| CN104866147A (en) | 2015-08-26 |
| CN107479775A (en) | 2017-12-15 |
| TW201533644A (en) | 2015-09-01 |
| CN104866149A (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108845724B (en) | Capacitive key module with function of preventing mistaken touch | |
| US9684422B2 (en) | Smart device having ability for rejecting mistaken touching | |
| US9997309B2 (en) | Touch control keyboard | |
| CN105706206B (en) | Quick tactile feedback keyboard without controller | |
| US9746980B2 (en) | Capacitive finger navigation module and manufacturing method thereof | |
| US20060232559A1 (en) | Capacitive touchpad with physical key function | |
| US10289210B1 (en) | Enabling touch on a tactile keyboard | |
| WO2016192641A1 (en) | Key device manipulation and control method, key device and terminal | |
| CN113496837A (en) | Key unit and keyboard applying same | |
| US20150286311A1 (en) | Passive touch pen | |
| US20140160641A1 (en) | Electronic apparatus | |
| US20150286309A1 (en) | Passive touch pen | |
| CN108734097B (en) | Integrated fingerprint and force sensor | |
| KR101573521B1 (en) | Touch pen detecting pressure | |
| JP6122192B2 (en) | Electronics | |
| WO2020090535A1 (en) | Input device and input system | |
| JP2016091803A (en) | Electrostatic capacity type input device | |
| CN106104732B (en) | Switching device | |
| CN113994308B (en) | Input device and input system | |
| CN112614720B (en) | Key assembly and electronic equipment | |
| KR102011766B1 (en) | Apparatus for displaying information using touch sensing signal and method thereof | |
| CN206271593U (en) | A kind of button and electronic equipment | |
| TW202145271A (en) | Capacitive touch button | |
| KR101640664B1 (en) | multi switch module | |
| CN112578461A (en) | Key detection device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |