CN108733294A - Touch pressing force checking device and terminal device - Google Patents
Touch pressing force checking device and terminal device Download PDFInfo
- Publication number
- CN108733294A CN108733294A CN201710266793.5A CN201710266793A CN108733294A CN 108733294 A CN108733294 A CN 108733294A CN 201710266793 A CN201710266793 A CN 201710266793A CN 108733294 A CN108733294 A CN 108733294A
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- China
- Prior art keywords
- pole plate
- pressing force
- fingerprint recognition
- checking device
- tactile
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- 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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
-
- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- 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
- 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
Abstract
The invention discloses a kind of tactile pressing force checking device and including its terminal device, wherein detection device includes：Circuit board；Fingerprint recognition module, fingerprint recognition module include fingerprint recognition chip, and fingerprint recognition chip is arranged on the first face of circuit board；Pressure detecting assembly, pressure detecting assembly includes the first pole plate and the second pole plate being oppositely arranged, first pole plate is arranged on circuit boards, and the first pole plate is arranged in the lower section of fingerprint recognition chip after circuit board bending, second pole plate is grounded, and between the first pole plate and the second pole plate there is variable gap to form capacitance to couple；The capacitive detection circuit being connected with the first pole plate, wherein when by the tactile pressing force of user's finger, the capacitance between the first pole plate and the second pole plate changes fingerprint recognition chip, and capacitive detection circuit, which is used to be calculated according to capacitance change, touches pressing force.The service life of the detection device is long, and pressure detecting precision is high, and helps to realize the waterproof effect of the terminal device using it.
Description
Technical field
The present invention relates to technical field of pressure detection, and in particular to one kind touching pressing force checking device and a kind of terminal is set
It is standby.
Background technology
Currently, fingerprint recognition module (such as preposition fingerprint recognition module) is substantially the important component of high-end handsets, it is general
It is arranged in home keys (the home keys of such as iPhone) position, and generally uses physics when carrying out fingerprint recognition or pressure detecting
Button.
However, the service life of physical button itself is very short, it is difficult to meet the frequent pressing demand more than 2 years.And its
Design structure is complicated, and cost is higher.In addition, since trepanning is there are gap, mechanical movement when button is easy to seep water, i.e., mechanical
The water proofing property of button is poor.
Invention content
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, the present invention
One purpose is to propose that a kind of touch presses force checking device.The service life of the detection device is long, simple in structure, and is conducive to
Realize the waterproof effect using its terminal device.
It is another object of the present invention to propose a kind of terminal device.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of touch and presses force checking device, including：Electricity
Road plate；Fingerprint recognition module, the fingerprint recognition module include fingerprint recognition chip, and the fingerprint recognition chip is arranged described
On first face of circuit board；Pressure detecting assembly, the pressure detecting assembly include the first pole plate being oppositely arranged and the second pole
Plate, wherein first pole plate is arranged on the circuit board, and first pole plate is arranged in institute after circuit board bending
The lower section of fingerprint recognition chip is stated, the second pole plate ground connection has variable gap between first pole plate and the second pole plate
Capacitance is formed with coupling；Capacitive detection circuit, the capacitive detection circuit are connected with first pole plate；Wherein, the fingerprint
When by the tactile pressing force of user's finger, the capacitance between first pole plate and the second pole plate changes identification chip,
The capacitive detection circuit is used to calculate the finger according to the capacitance change between first pole plate and second pole plate
The tactile pressing force that line identification chip is subject to.
Tactile pressing force checking device according to the present invention, by being arranged pressure detecting assembly under fingerprint recognition chip
Side, can realize in fingerprint recognition chip when by the tactile pressing force of user's finger, by pressure transmission to pressure detecting assembly,
And it is realized by capacitive detection circuit and touches pressing force detection.It could be realized when fingerprint recognition chip is touched by operation as a result,
The response of pressure events can reduce the probability of maloperation, and the detection device service life is long, simple in structure, be conducive to reality
Now use the waterproof effect of its terminal device.
In addition, tactile pressing force checking device according to the above embodiment of the present invention can also have following additional technology special
Sign：
According to one embodiment of present invention, it is provided with dielectric material in the variable gap.
Specifically, the dielectric material is gel, foam, silica gel, rubber or plastics.
According to one embodiment of present invention, the fingerprint recognition module further includes：Reinforcement steel disc, the reinforcement steel disc are set
It sets in the lower section of the fingerprint recognition chip, and the reinforcement steel disc is arranged on the circuit board.
According to one embodiment of present invention, the reinforcement steel disc is grounded and is multiplexed with second pole plate, and described first
Second face of pole plate is oppositely arranged with the reinforcement steel disc, and between the second face of first pole plate and the reinforcement steel disc
Dielectric material is provided in variable gap.
According to one embodiment of present invention, it is pasted with dielectric material on the first face of first pole plate, described first
After pole plate is bent to the lower section of the fingerprint recognition chip, second pole plate is pasted in the lower section of the dielectric material, wherein
First pole plate is oppositely arranged with second pole plate.
According to one embodiment of present invention, first pole plate is formed with second pole plate after the circuit board bending
Cavity body structure.
According to one embodiment of present invention, the first face of first pole plate is set with second pole plate in square shape
It sets.
According to one embodiment of present invention, the reinforcement steel disc is arranged with second pole plate in square shape, and described
Between first pole plate is arranged between the reinforcement steel disc and second pole plate, and formation is variable between the reinforcement steel disc
Gap.
According to one embodiment of present invention, the circuit board is FPC flexible PCBs.
According to one embodiment of present invention, the tactile pressing force checking device further includes：Response assemblies, the sound
Component is answered to be connected with the capacitive detection circuit, the response assemblies are used for when the tactile pressing force is more than predetermined threshold value, will
The tactile pressing force is sent to host computer, so that the host computer exports corresponding control instruction according to the tactile pressing force,
In, tactile pressing force and control instruction corresponding with the tactile pressing force are stored in the host computer.
According to one embodiment of present invention, the response assemblies are connected with the fingerprint recognition chip, the response group
Part is additionally operable to：In tactile pressing force of the fingerprint recognition chip by the user's finger, the fingerprint recognition chip is controlled
It scans and identifies the finger print information of the user, and receive the fingerprint identification information of the fingerprint recognition chip output, and will
The fingerprint identification information is sent to the host computer, so that the host computer is corresponding according to fingerprint identification information generation
Control instruction, wherein be stored with fingerprint identification information in the host computer and control corresponding with the fingerprint identification information refers to
It enables.
According to one embodiment of present invention, the fingerprint recognition chip, the capacitive detection circuit, the response assemblies
It is integrated on same phy chip.
Further, the present invention proposes a kind of terminal device comprising above-mentioned tactile pressing force checking device.
Terminal device according to the present invention can effectively detect tactile pressing force using above-mentioned tactile pressing force checking device
Size, and then help to reduce the probability of itself maloperation, and conducive to the realization waterproof effect of itself.
In addition, terminal device according to the above embodiment of the present invention can also have following additional technical characteristic：
According to one embodiment of present invention, the terminal device further includes：Main control chip, the main control chip and institute
It states response assemblies to be connected, the tactile pressing force and/or the fingerprint that the main control chip is used to be exported according to the response assemblies are known
Other information generates control instruction corresponding with the tactile pressing force and/or the fingerprint identification information, and controls the terminal and set
It is standby to execute the control instruction.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of tactile pressing force checking device according to an embodiment of the invention；
Fig. 2 a are the structure masters of the tactile pressing force checking device after being bent according to the circuit board of first embodiment of the invention
View；
Fig. 2 b are the structure masters of the tactile pressing force checking device before being bent according to the circuit board of first embodiment of the invention
View；
Fig. 3 a are the structure top views of the tactile pressing force checking device before circuit board bending according to the ... of the embodiment of the present invention；
Fig. 3 b are the structure top views of the tactile pressing force checking device after circuit board bending according to the ... of the embodiment of the present invention；
Fig. 4 a are the structure masters of the tactile pressing force checking device after being bent according to the circuit board of second embodiment of the invention
View；
Fig. 4 b are the structure masters of the tactile pressing force checking device before being bent according to the circuit board of second embodiment of the invention
View；
Fig. 5 a are the structure masters of the tactile pressing force checking device after being bent according to the circuit board of third embodiment of the invention
View；
Fig. 5 b are the structure masters of the tactile pressing force checking device before being bent according to the circuit board of third embodiment of the invention
View；
Fig. 6 a are the structure masters of the tactile pressing force checking device after being bent according to the circuit board of four embodiment of the invention
View；
Fig. 6 b are the structure masters of the tactile pressing force checking device before being bent according to the circuit board of four embodiment of the invention
View；And
Fig. 7 is the structural schematic diagram of terminal device according to the ... of the embodiment of the present invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the tactile pressing force checking device proposed according to embodiments of the present invention and terminal device are described.
Fig. 1 is the structural schematic diagram of tactile pressing force checking device according to an embodiment of the invention.As shown in Figure 1, should
Pressing force checking device is touched, including：1 (not shown in figure 1) of circuit board, fingerprint recognition module 2, pressure detecting assembly 3 and capacitance
Detection circuit 4.
Referring to Fig. 2 a, fingerprint recognition module 2 includes fingerprint recognition chip 21, and fingerprint recognition chip 21 is arranged in circuit board 1
The first face on.Pressure detecting assembly 3 includes the first pole plate 31 and the second pole plate 32 being oppositely arranged, and the setting of the first pole plate 31 exists
On circuit board 1, and first pole plate 31 is arranged in the lower section of fingerprint recognition chip 21 after the bending of circuit board 1, and the second pole plate 32 connects
Ground, between the first pole plate 31 and the second pole plate 32 there is variable gap to form capacitance to couple.Capacitive detection circuit 4 and first
Pole plate 31 is connected.Wherein, fingerprint recognition chip 21 is when by the tactile pressing force of user's finger, the first pole plate 31 and the second pole plate
Capacitance between 32 changes, and capacitive detection circuit 4 is used to be become according to the capacitance between the first pole plate 31 and the second pole plate 32
Change amount calculates the tactile pressing force that fingerprint recognition chip 21 is subject to.
In an embodiment of the present invention, the gap between the first pole plate 31 and the second pole plate 32 can fill air, also may be used
There is elasticity and nonconducting dielectric material with gel filled, foam, rubber, silica gel, plastics etc..It should be noted that dielectric
Material is not limited to gel, foam, rubber, silica gel, plastics.
Specifically, in circuit board 1, as made one on FPC (Flexible Printed Circuit, flexible circuit board)
Capacitance detecting electrode (i.e. the first pole plate 31).When assembling, the first pole plate 31 on circuit board 1 is bent, so that its setting is referring to
The lower section of line identification chip 21 couples to form capacitance with the second pole plate 32 of a ground connection.First pole plate 31 and the second pole plate 32 it
Between can fill nonconducting gel, foam or air etc..When finger is touched by fingerprint recognition chip 21, entire pressure detecting dress
Set and bear pressure and just will produce small deformation, gel, foam or air can be made thinning, the first pole plate 31 and the second pole plate 32 it
Between distance become smaller, the two, which couples the capacitance to be formed, to become larger.Since capacitance variations value size and pressure size are directly proportional, electricity
Hold detection circuit 4 and detects that capacitance variations value is assured that the size of tactile pressing force.
In an embodiment of the present invention, the size of pressure can be detected using condenser type principle.Referring to Fig. 2 a, the first pole
Plate 31 and the second pole plate 32 are arranged in parallel, and it is C=ε S/ (4 π K*d) that the two, which couples the capacitance equation to be formed, wherein K is constant, ε
Indicate that the dielectric constant between two-plate, S indicate that the area of pole plate, d represent the distance between two-plate.It is applied to when there is external force
When on parallel plate electrode capacitance, the first pole plate 31 and/or the second pole plate 32 can be caused to deform upon, and then the distance between two-plate
Changing, the capacitance that the two coupling at this time is formed changes, and the variation of capacitance can be detected by capacitive detection circuit 4,
And then the size of tactile pressing force can be calculated according to capacitance variations value.
Specifically, in an embodiment of the present invention, pressure detecting assembly 3 uses self-capacitance pressure detection structure, pressure
A pin (i.e. the first pole plate 31) for power detection components 3 is as signal transmitting and receiving pin and is connected to capacitive detection circuit 4, pressure
Another pin (i.e. the second pole plate 32) of detection components 3 is grounded.The signal that capacitive detection circuit 4 passes through the first pole plate 31 of connection
Receive and dispatch pin to 3 input signal of pressure detecting assembly, and by the signal transmitting and receiving pin receive pressure detecting assembly 3 due to
The electric signal pressed and generated is touched by finger.Capacitive detection circuit 4 can be counted according to the variation of the electric signal of pressure detecting assembly 3
The capacitance change (i.e. capacitance change between the first pole plate 31 and the second pole plate 32) of pressure detecting assembly 3 is calculated, in turn
The tactile pressing force that fingerprint recognition chip 21 is subject to can be calculated according to the capacitance change.
Wherein, capacitive detection circuit 4 is in the variable quantity for detecting the coupled capacitor between the first pole plate 31 and the second pole plate 32
When, it can be, but not limited to using FM circuit, operational amplifier formula circuit, diode double-T circuit, difference pulse tune stretch circuit
And bridge circuit, it can specifically be selected as needed.
Optionally, fingerprint recognition chip 21 and capacitive detection circuit 4 can be integrated in same phy chip.
Further, in one embodiment of the invention, as shown in Figure 1, touching pressing force checking device can also include
Response assemblies 5.Response assemblies 5 are connected with capacitive detection circuit 4, and response assemblies 5 are used for when tactile pressing force is more than predetermined threshold value,
Tactile pressing force is sent to host computer, so that host computer exports corresponding control instruction according to tactile pressing force, wherein in host computer
It is stored with tactile pressing force and control instruction corresponding with tactile pressing force.
For example, using above-mentioned tactile pressing force checking device in terminal device (such as smart mobile phone), finger is touched to be known by fingerprint
When other chip 21, tactile pressing force can be exported to host computer by response assemblies 5 when tactile pressing force is more than pressure threshold,
So that host computer exports control instruction according to tactile pressing force, such as releases the dormant state of terminal device, realizes opening for terminal device
Machine response etc..
In one embodiment of the invention, as shown in Figure 1, response assemblies 5 can also be connected with fingerprint recognition chip 21,
Response assemblies 5 can be also used in tactile pressing force of the fingerprint recognition chip 21 by user's finger, control fingerprint recognition chip
21 scan and identify the finger print information of user, and receive the fingerprint identification information of the output of fingerprint recognition chip 21, and by fingerprint
Identification information is sent to host computer, so that host computer generates corresponding control instruction according to fingerprint identification information, wherein host computer
In be stored with fingerprint identification information and control instruction corresponding with fingerprint identification information.
For example, using above-mentioned tactile pressing force checking device in terminal device (such as smart mobile phone), finger is touched to be known by fingerprint
When other chip 21, response assemblies 5 can control fingerprint recognition chip 21 and identify user fingerprints, and obtain fingerprint identification information (such as
Certification passes through), fingerprint identification information is sent to host computer, so that host computer exports control instruction according to fingerprint identification information,
The lock-out state of terminal device is such as released to enter operation interface.
Optionally, fingerprint recognition chip 21, capacitive detection circuit 4, response assemblies 5 can be integrated on same phy chip.
Thus, it is possible to reduce the number for touching pressing force checking device chips, be conducive to simplify the production work using its terminal device
Skill.
In the specific example of the present invention, as shown in Figure 1, when tactile pressing force checking device works on power, it is integrated
Phy chip be initialized to finger acquisition mode, if user's finger is placed on fingerprint recognition chip 21, capacitance detecting
Circuit 4 will detect finger and touch pressing force and be sent to response assemblies 5 in real time, while response assemblies 5 can control fingerprint recognition core
Piece 21 enters fingerprint recognition pattern and starts to scan fingerprint, and the fingerprint identification information of fingerprint recognition chip 21 is sent to
Position machine.If response assemblies 5 judge that touching pressing force increases to predetermined threshold value, response assemblies 5 can pass through power supply and signal transmission
Tactile pressing force is transferred to host computer by module, and at this moment host computer can go out according to fingerprint identification information and tactile pressing force comprehensive descision
Corresponding control instruction.It is appreciated that power supply and signal transmission module may be implemented to touch power supply and the letter of pressing force checking device
Number transmission.
The realization method of the pressure detecting assembly 3 of the embodiment of the present invention for ease of understanding is said in combination with Fig. 2 a- Fig. 6 b
It is bright：
In one embodiment of the invention, as shown in Figure 2 a, fingerprint recognition module 2 further includes reinforcement steel disc 22, reinforcement
Steel disc 22 is arranged in the lower section of fingerprint recognition chip 21, and the setting of reinforcement steel disc 22 is on the circuit card 1, i.e. the second of circuit board 1
On face.
It should be noted that in an embodiment of the present invention, reinforcement steel disc 22, the first pole plate 31 and the second pole plate 32 material
Matter may each be copper foil, and 22 reusable of reinforcement steel disc is the second pole plate 32.It is appreciated that reinforcement steel disc 22 is multiplexed with the second pole
It is grounded when plate 32.
In one example, as shown in Figure 2 a, reinforcement steel disc 22 is grounded and is multiplexed with the second pole plate 32, the first pole plate 31
Second face is oppositely arranged with reinforcement steel disc 22, and is set in the variable gap between the second face and reinforcement steel disc 22 of the first pole plate 31
It is equipped with dielectric material, such as gel, foam.
Preferably, the second face of the first pole plate 31 can be arranged in parallel with reinforcement steel disc 22.
Specifically, when making FPC plates, can additionally make a capacitance detecting pole plate (i.e. the first pole plate 31) (referring to
3a), gel, foam etc. are pasted in the second face (i.e. the second face of FPC plates) of the first pole plate 31 certain elasticity, nonconducting dielectric
Then the first pole plate 31 in FPC plates is folded into the lower section (referring to Fig. 3 b) of fingerprint recognition chip 21 by material (referring to Fig. 2 b),
Can be arranged in parallel with reinforcement steel disc 22, and dielectric material Pasting on reinforcement steel disc 22 (referring to Fig. 2 a), at this moment the first pole plate
31 couple to form capacitance with reinforcement steel disc 22.When finger is touched by fingerprint recognition chip 21, tactile pressing force can make intermediate elasticity
Dielectric material is slightly thinning (deformation is little), and the distance between the first pole plate 31 and reinforcement steel disc 22 become smaller, and coupled capacitor will
Become larger.The variable quantity that this coupled capacitor is detected by capacitive detection circuit 4 is the size that can detect that tactile pressing force.
In another example, as shown in fig. 4 a, be pasted with dielectric material on the first face of the first pole plate 31, as gel,
Foam etc. after the first pole plate 31 is bent to the lower section of fingerprint recognition chip 21, pastes the second pole plate 32 in the lower section of dielectric material,
Wherein, the first pole plate 31 is oppositely arranged with the second pole plate 32.
Preferably, the first pole plate 31 is arranged in parallel with the second pole plate 32.
Specifically, when making FPC plates, can additionally make a capacitance detecting pole plate (i.e. the first pole plate 31) (referring to
Fig. 3 a), it is pasted in the first face (being arranged in the same side of FPC plates with fingerprint recognition chip before not bending) of the first pole plate 31 solidifying
Glue, foam etc. have certain elasticity, nonconducting dielectric material (referring to Fig. 4 b), and the first pole plate 31 in FPC plates is folded into finger
The lower section (referring to Fig. 3 b) of line identification chip 21, and paste the second pole plate 32, the second pole plate 32 and the in the lower section of dielectric material
One pole plate 31 is arranged in parallel (referring to Fig. 4 a), and at this moment the first pole plate 31 couples to form capacitance with the second pole plate 32.It is pressed when finger touches
When fingerprint recognition chip, tactile pressing force can make intermediate elastomeric dielectric material slightly thinning (deformation is little), 31 He of the first pole plate
The distance between second pole plate 32 becomes smaller, and coupled capacitor will become larger.This coupled capacitor is detected by capacitive detection circuit 4
Variable quantity is the size that can detect that tactile pressing force.
In some embodiments of the invention, as shown in Fig. 5 a, Fig. 6 a, the first pole plate 31 and second after circuit board 1 is bent
Pole plate 32 forms cavity body structure.It should be noted that not being electrically connected between the first pole plate 31 and the second pole plate 32.
In third example, as shown in Figure 5 a, the second pole plate 32 can be in that concave shape is arranged, after circuit board 1 is bent, the
Cavity body structure is formed between one pole plate 31 and the second pole plate 32, and is arranged in square shape.
Specifically, when making FPC plates, can additionally make a capacitance detecting pole plate (i.e. the first pole plate 31) (referring to
Fig. 3 a, Fig. 5 b), the first pole plate 31 in FPC plates is folded into the lower section (referring to Fig. 3 b) of fingerprint recognition chip 21, it is recessed to make one
The open end of second pole plate 32 of concave shape is close to the first pole plate 31 and is arranged so that the first pole plate 31 by the second pole plate of font 32
Cavity body structure (referring to Fig. 5 a) is formed between the second pole plate 32, the second pole of the first pole plate 31 and concave shape on circuit board 1
32 direct-coupling of plate forms capacitance, and the dielectric material between two-plate can be the air in gap.Fingerprint is pressed when finger touches
When identification chip 21, tactile pressing force can make the second pole plate 32 of bottom slightly deform recess (deformation is little) upwards, and at this moment first
The distance between pole plate 31 and the second pole plate 32 become smaller, and coupled capacitor becomes larger.This coupling electricity is detected by capacitive detection circuit 4
The variable quantity of appearance is the size that can detect that tactile pressing force.
In the 4th example, as shown in Figure 6 a, reinforcement steel disc 22 and the second pole plate 32 are arranged in square shape, and the first pole
Plate 31 is arranged between reinforcement steel disc 22 and the second pole plate 32, and forms variable gap between reinforcement steel disc 22.
Specifically, when making FPC plates, can additionally make a capacitance detecting pole plate (i.e. the first pole plate 31) (referring to
Fig. 3 a), reinforcement steel disc 22 is multiplexed with the second pole plate, and to couple to form capacitance with the first pole plate 31, the second pole plate 32 is in concave shape
The first pole plate 31 setting (referring to Fig. 6 b), (referring to Fig. 3 b) after circuit board 1 is bent, the second pole plate are close in setting, character cut in bas-relief bottom end
Cavity body structure is formed between 32 and reinforcement steel disc 22, and is arranged in square shape, and the first pole plate 31 is in reinforcement steel disc 22 and the second pole
(referring to Fig. 6 a) between plate 32.First pole plate 31 and 22 direct-coupling of reinforcement steel disc formation capacitance, and dielectric material between the two
Material can be the air in gap.When finger is touched by fingerprint recognition chip 21, tactile pressing force can make the second pole plate 32 of bottom
Slightly deformation is recessed (deformation is little) upwards, and at this moment the distance between the first pole plate 31 and reinforcement steel disc 22 become smaller, coupled capacitor
Become larger.The variable quantity that this coupled capacitor is detected by capacitive detection circuit 4 is the size that can detect that tactile pressing force.
It should be noted that in an embodiment of the present invention, the first pole plate 31 and the second pole plate 32 and/or reinforcement steel disc it
Between structural relation it is not limited to the above example, such as the second pole plate 32 can also be in fold-line-shaped, square shape.
To sum up, the detection device of the tactile pressing force of the embodiment of the present invention, by knowing pressure detecting assembly setting in fingerprint
The lower section of other chip is touched on time in fingerprint recognition chip by external pressure to realize, tactile pressing force is transmitted to pressure inspection
Component is surveyed, and is realized by capacitive detection circuit and touches pressing force detection, and when tactile pressing force is more than predetermined threshold value, realizes phase
The control answered.The detection device is not necessarily to mechanical key, and service life is long, and can detect different tactile pressing forces, and accuracy of detection is high.Separately
Outside, when using the detection device in terminal device, it is advantageously implemented the waterproof effect of terminal device, and can be according to tactile pressing
Power realizes corresponding control, helps to reduce misoperation probability.
Further, the present invention proposes a kind of terminal device.
Fig. 7 is the block diagram of terminal device according to the ... of the embodiment of the present invention.As shown in fig. 7, the terminal device 1000 includes
The tactile pressing force checking device 100 of above-described embodiment.
Optionally, terminal device 1000 can be, but not limited to be smart mobile phone, tablet computer, smart television, palm reading
Device etc..
It is appreciated that terminal device 1000 further includes cover board (the display screen cover board of such as smart mobile phone), cover board setting is being touched
The top for pressing force checking device 100 can be used to protect and touch pressing force checking device 100.
In one embodiment of the invention, as shown in fig. 7, terminal device 1000 can also include main control chip 200.It is main
Control chip 200 is connected with pressing force checking device 100 is touched, and main control chip 200 touches pressing force checking device 100 for basis and exports
Tactile pressing force generate corresponding with tactile pressing force control instruction, and control terminal equipment execution control instruction.Specifically, master control
Chip 200 is connected with the response assemblies 5 touched in pressing force checking device 100, and main control chip 200 is defeated for component 5 according to response
The tactile pressing force and/or fingerprint identification information gone out generates control instruction corresponding with tactile pressing force and/or fingerprint identification information, and
Control terminal equipment executes control instruction.
For example, tactile pressing force and its corresponding control instruction can be prestored in main control chip 200, such as touch pressing force
Corresponding to release dormant state control instruction when between F1~F2, when touching pressing force between F2~F3, corresponding terminal of closing is set
Standby control instruction.Terminal device in a dormant state, when user touches by fingerprint recognition chip 21, touches pressing force checking device
When the tactile pressing force that 100 detections obtain is between F1~F2, then the dormant state of terminal device is released.
In the example of the present invention, response assemblies 5 are used to receive the tactile pressing force of the output of capacitive detection circuit 4, and
Judge that this touches whether pressing force is more than predetermined threshold value, if this, which touches pressing force, is more than predetermined threshold value, this is touched and is pressed by response assemblies 5
Pressure output such as releases terminal and sets to main control chip 200 so that main control chip 200 touches pressing force according to this exports control instruction
Standby dormant state.
In another example, response assemblies 5 are used to receive the tactile pressing force and fingerprint recognition of the output of capacitive detection circuit 4
The fingerprint identification information that chip 21 exports, and judgement touches whether pressing force is more than predetermined threshold value, is more than in advance if this touches pressing force
If threshold value, then this is touched into pressing force and fingerprint identification information is exported to main control chip 200, so that main control chip 200 is pressed according to tactile
Pressure and fingerprint identification information (such as certification passes through) export control instruction, such as unlock terminal device to enter operation interface.
Terminal device according to the ... of the embodiment of the present invention leads in tactile pressing force of the fingerprint recognition chip by user's finger
It crosses above-mentioned tactile pressing force checking device detection and touches pressing force, to realize the response of event when touching pressing force and being more than predetermined threshold value,
Thereby, it is possible to effectively reduce the misoperation probability of terminal device, and instead of traditional mechanical key, service life is long.In addition,
Be not in movement gap when in use, be advantageously implemented waterproof effect.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (15)
1. one kind touching pressing force checking device, which is characterized in that including：
Circuit board；
Fingerprint recognition module, the fingerprint recognition module include fingerprint recognition chip, and the fingerprint recognition chip is arranged described
On first face of circuit board；
Pressure detecting assembly, the pressure detecting assembly include the first pole plate and the second pole plate being oppositely arranged, wherein described
One pole plate is arranged on the circuit board, the second pole plate ground connection, and the first pole plate setting after circuit board bending
Between the lower section of the fingerprint recognition chip, first pole plate and the second pole plate there is variable gap to form electricity to couple
Hold；
Capacitive detection circuit, the capacitive detection circuit are connected with first pole plate；
Wherein, the fingerprint recognition chip is when by the tactile pressing force of user's finger, first pole plate and the second pole plate it
Between capacitance change, the capacitive detection circuit be used for according to the capacitance between first pole plate and second pole plate
Variable quantity calculates the tactile pressing force that the fingerprint recognition chip is subject to.
2. as described in claim 1 touch pressing force checking device, which is characterized in that be provided with dielectric material in the variable gap
Material.
3. as claimed in claim 2 touch pressing force checking device, which is characterized in that the dielectric material is gel, foam, silicon
Glue, rubber or plastics.
4. as described in claim 1 touch pressing force checking device, which is characterized in that the fingerprint recognition module further includes：
Reinforcement steel disc, the reinforcement steel disc is arranged in the lower section of the fingerprint recognition chip, and the reinforcement steel disc is arranged in institute
It states on circuit board.
5. as claimed in claim 4 touch pressing force checking device, which is characterized in that the reinforcement steel disc is grounded and is multiplexed with institute
The second pole plate is stated, the second face of first pole plate is oppositely arranged with the reinforcement steel disc, and the second face of first pole plate
It is provided with dielectric material in variable gap between the reinforcement steel disc.
6. as described in claim 1 touch pressing force checking device, which is characterized in that pasted on the first face of first pole plate
It is viscous in the lower section of the dielectric material after thering is dielectric material, first pole plate to be bent to the lower section of the fingerprint recognition chip
Paste second pole plate, wherein first pole plate is oppositely arranged with second pole plate.
7. as described in claim 1 touch pressing force checking device, which is characterized in that first pole after the circuit board bending
Plate forms cavity body structure with second pole plate.
8. as claimed in claim 7 touch pressing force checking device, which is characterized in that the first face of first pole plate with it is described
Second pole plate is arranged in square shape.
9. as claimed in claim 4 touch pressing force checking device, which is characterized in that the reinforcement steel disc and second pole plate
Be arranged in square shape, and first pole plate be arranged between the reinforcement steel disc and second pole plate, and with the reinforcement
Variable gap is formed between steel disc.
10. as described in claim 1 touch pressing force checking device, which is characterized in that the circuit board is FPC flexible circuits
Plate.
11. the tactile pressing force checking device as described in any one of claim 1-10, which is characterized in that further include：
Response assemblies, the response assemblies are connected with the capacitive detection circuit, and the response assemblies are used in the tactile pressing
When power is more than predetermined threshold value, the tactile pressing force is sent to host computer, so that the host computer is defeated according to the tactile pressing force
Go out corresponding control instruction, wherein be stored with tactile pressing force in the host computer and control corresponding with the tactile pressing force refers to
It enables.
12. as claimed in claim 11 touch pressing force checking device, which is characterized in that the response assemblies are known with the fingerprint
Other chip is connected, and the response assemblies are additionally operable to：
In tactile pressing force of the fingerprint recognition chip by the user's finger, the fingerprint recognition chip scanning is controlled simultaneously
It identifies the finger print information of the user, and receives the fingerprint identification information of fingerprint recognition chip output, and by the finger
Line identification information is sent to the host computer, refers to so that the host computer generates corresponding control according to the fingerprint identification information
It enables, wherein fingerprint identification information and control instruction corresponding with the fingerprint identification information are stored in the host computer.
13. as claimed in claim 11 touch pressing force checking device, which is characterized in that the fingerprint recognition chip, the electricity
Hold detection circuit, the response assemblies are integrated on same phy chip.
14. a kind of terminal device, which is characterized in that including：Tactile pressing force detection as described in any one of claim 1-13
Device.
15. terminal device as claimed in claim 14, which is characterized in that further include：
Main control chip, the main control chip are connected with the response assemblies, and the main control chip is used for according to the response assemblies
The tactile pressing force and/or the fingerprint identification information of output generate and the tactile pressing force and/or the fingerprint identification information pair
The control instruction answered, and control the terminal device and execute the control instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266793.5A CN108733294A (en) | 2017-04-21 | 2017-04-21 | Touch pressing force checking device and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266793.5A CN108733294A (en) | 2017-04-21 | 2017-04-21 | Touch pressing force checking device and terminal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108733294A true CN108733294A (en) | 2018-11-02 |
Family
ID=63933589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710266793.5A Pending CN108733294A (en) | 2017-04-21 | 2017-04-21 | Touch pressing force checking device and terminal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108733294A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112163565A (en) * | 2020-10-28 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Fingerprint identification circuit and OLED display panel |
| CN112686133A (en) * | 2020-12-28 | 2021-04-20 | 科大讯飞股份有限公司 | Human body posture recognition system, method, related equipment and readable storage medium |
| CN113010052A (en) * | 2021-03-16 | 2021-06-22 | 维沃移动通信有限公司 | Smart watch, interaction method and interaction device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203930876U (en) * | 2014-07-02 | 2014-11-05 | 南昌欧菲生物识别技术有限公司 | Fingerprint recognition detection components and terminal device |
| CN205644574U (en) * | 2016-03-25 | 2016-10-12 | 邓力 | Integrated form fingerprint identification module |
| US20160307022A1 (en) * | 2015-04-14 | 2016-10-20 | Chih-Chung Lin | Touch device with fingerprint identification function |
| CN106415459A (en) * | 2016-09-17 | 2017-02-15 | 深圳市汇顶科技股份有限公司 | Touch pressure detection module and apparatus |
-
2017
- 2017-04-21 CN CN201710266793.5A patent/CN108733294A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203930876U (en) * | 2014-07-02 | 2014-11-05 | 南昌欧菲生物识别技术有限公司 | Fingerprint recognition detection components and terminal device |
| US20160307022A1 (en) * | 2015-04-14 | 2016-10-20 | Chih-Chung Lin | Touch device with fingerprint identification function |
| CN205644574U (en) * | 2016-03-25 | 2016-10-12 | 邓力 | Integrated form fingerprint identification module |
| CN106415459A (en) * | 2016-09-17 | 2017-02-15 | 深圳市汇顶科技股份有限公司 | Touch pressure detection module and apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112163565A (en) * | 2020-10-28 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Fingerprint identification circuit and OLED display panel |
| CN112163565B (en) * | 2020-10-28 | 2023-06-30 | 武汉华星光电半导体显示技术有限公司 | Fingerprint identification circuit and OLED display panel |
| CN112686133A (en) * | 2020-12-28 | 2021-04-20 | 科大讯飞股份有限公司 | Human body posture recognition system, method, related equipment and readable storage medium |
| CN113010052A (en) * | 2021-03-16 | 2021-06-22 | 维沃移动通信有限公司 | Smart watch, interaction method and interaction device |
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Effective date of registration: 20210204 Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Applicant after: BYD Semiconductor Co.,Ltd. Address before: 518118 BYD Road, Pingshan New District, Shenzhen, Guangdong 3009 Applicant before: BYD Co.,Ltd. |
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Application publication date: 20181102 |