CN207249680U

CN207249680U - Contact measurement module and there is its electronic equipment

Info

Publication number: CN207249680U
Application number: CN201720601148.XU
Authority: CN
Inventors: 李扬渊
Original assignee: Suzhou Mairui Microelectronic Co Ltd
Current assignee: Suzhou Mairui Microelectronic Co Ltd
Priority date: 2017-05-26
Filing date: 2017-05-26
Publication date: 2018-04-17
Anticipated expiration: 2027-05-26

Abstract

The utility model discloses a kind of contact measurement module and has its electronic equipment, contact measurement module includes the Stroke Control element of contact measurement component, first electrode, second electrode, setting between electrodes and the capacitive detection circuit with the electric connection of two electrodes, two electrodes are located at contact measurement component or detect the lower section of module, spacing between first electrode and second electrode diminishes under the effect of pressing operation pressure, and capacitive detection circuit is used for capacitance conversion caused by detecting distance diminishes to reflect the pressure size of the pressing operation.Two electrodes of the utility model are located immediately at the lower section of contact measurement component, it is simple in structure, process complexity is low, long lifespan, and coordinate the detection of capacitive detection circuit progress quantity of electric charge pressure value, realize that the detection process of piezoelectric transducer pressure value limits from the precision of depressed position, detection error caused by avoiding pressure unbalanced so that the certain build-up tolerance of contact measurement module tolerable.

Description

Contact measurement module and there is its electronic equipment

Technical field

It the utility model is related to sensor field, more particularly to a kind of contact measurement module and set with its electronics It is standby.

Background technology

The pressure sensitivity fingerprint sensor of apple iPhone7 series opens the industry requirement of pressure sensitivity fingerprint, although oppo R9s For solid-state push-button design but there is no pressure sensitivity, therefore, at present in addition to apple, not yet occur the pressure sensitivity scheme of maturation in the industry.

Referring to the patent application of Apple Inc.（Publication number US2016/0033342A1）.

As shown in Figure 1, the center of handset shell 300 has circular opening（Do not indicate）, opening is for accommodating contact Detect module 200 and 200 transducing signal of contact measurement module by being located therein.

Here, contact measurement module 200 is pressure sensitivity fingerprint sensor.

Contact measurement module 200 includes contact measurement component 200a and piezoelectric transducer 200b.

Contact measurement component 200a is substantially fingerprint recognition component, and fingerprint recognition component 200a includes cover board 201a, gold Belong to ring 202a and fingerprint sensor 203a.

The outer contour of cover board 201a is rounded, and cover board 201a is used to receive pressing operation.

The inner side of becket 202a is formed with stage portion 2021a.

Fingerprint sensor 203a is arranged at the lower section of cover board 201a.

Piezoelectric transducer 200b includes flexible member 204b and electrode 205b.

Flexible member 204b is in hollow and annular, and flexible member 204b and electrode 205b are located at the lower section of cover board 201a, electrode 205b is located at the both sides up and down of flexible member 204b, and flexible member 204b and electrode 205b are carried at stage portion 2021b.

Here, flexible member 204b and electrode 205b is electrically connected by routing 206 and fingerprint sensor 203a.

When cover board 201a receives pressing operation, flexible member 204b produces certain deformation so that flexible member Capacitance change is produced between the electrode 205b at 204b both ends, capacitance change is transmitted to fingerprint sensor by routing 206 203a, then fingerprint sensor 203a, which again conducts capacitance change to processing unit, is handled, to identify that user presses Operation.

In addition, in order to improve detection reliability, multiple pressure detecting points can be also set at step 2021b.

There are following defect for the contact measurement module 200 of Apple Inc.：

（1）Flexible member 204b, manufacture difficulty and making are carried using the special-shaped becket 202a with stage portion 2021a Cost is higher；

（2）Flexible member 204b and electrode 205b is electrically connected by routing 206 and fingerprint sensor 203a, and technique is multiple It is miscellaneous；

（3）Pressure is unbalanced in order to prevent causes detection error and sets multiple test points to mean that process costs are further Improve.

The content of the invention

To solve the above problems, the utility model provides a kind of contact measurement module and has its electronic equipment, its Simple in structure, process complexity is low, long lifespan, and the build-up tolerance that tolerable is certain.

To realize one of above-mentioned purpose of utility model, one embodiment of the utility model provides a kind of contact measurement mould Group, including：

Contact measurement component, it is used to receive pressing operation；

First electrode and the second electrode set in contrast, the distance between first electrode and second electrode are with contact Formula detection components receive pressing operation and reduce；

Stroke Control element, the first electrode and the second electricity when receiving pressing operation for contact limiting type detection components Maximum relative travel between pole；

Capacitive detection circuit, the capacitance formed for detecting the first electrode and second electrode.

Further as one embodiment of the utility model is improved, and the contact measurement component is fingerprint recognition group Part.

Further as one embodiment of the utility model is improved, and the first electrode and second electrode are arranged on fingerprint The inside of recognizer component.

Further as one embodiment of the utility model is improved, and the first electrode and second electrode are arranged on described Below fingerprint recognition component.

Further as one embodiment of the utility model is improved, and the Stroke Control element has elasticity and for branch Fingerprint recognition component is supportted, and the Stroke Control element provides the pressing force produced with pressing operation reverse reset force.

Further as one embodiment of the utility model is improved, the Stroke Control element be arranged on first electrode and Between second electrode, the bottom of the second electrode sets fore-set, and the fore-set is located at second electrode lower surface middle area Domain.

Further as one embodiment of the utility model is improved, and the Stroke Control element is stiffener.

Further as one embodiment of the utility model is improved, the Stroke Control element be arranged on first electrode and Between second electrode, Stroke Control element has elasticity.

Further as one embodiment of the utility model is improved, and the Stroke Control element is hollow type elasticity member Part.

Further as one embodiment of the utility model is improved, and has flexible circuit in contact measurement module internal Plate, the first surface of flexible PCB are electrically connected with fingerprint recognition component, and the second surface of flexible PCB forms described the One electrode, the second surface are oppositely arranged with the first surface.

Further as one embodiment of the utility model is improved, and contact measurement module further includes to support described The supporting parts of fingerprint recognition component, form the second electrode at the supporting parts.

Further as one embodiment of the utility model is improved, and the first electrode and second electrode are arranged on fingerprint The bottom of recognizer component.

Further as one embodiment of the utility model is improved, and contact measurement module further includes flexible PCB, Flexible PCB is bent at least partly to coat the first electrode upper surface and the second electrode lower surface, and the flexibility Formed with the through hole passed through for the fore-set on circuit board.

Further as one embodiment of the utility model is improved, and the Stroke Control element is rigid hollow type member Part.

Further as one embodiment of the utility model is improved, and the Stroke Control element has elasticity and is arranged on Between first electrode and second electrode.

Further as one embodiment of the utility model is improved, and the first electrode and the second electrode are by steel disc It is made.

To realize one of above-mentioned purpose of utility model, one embodiment of the utility model also provides a kind of electronic equipment, bag Include housing with hole and as above the contact measurement module described in any one technical solution, the contact measurement module In described hole.

Compared with prior art, the beneficial effects of the utility model are：Two electrodes of one embodiment of the utility model Simple in structure located immediately at the lower section of contact measurement component, process complexity is low, long lifespan, and coordinates capacitive detection circuit The detection of the quantity of electric charge-pressure value is carried out, realizes that the detection process of piezoelectric transducer pressure value limits from the precision of depressed position, Detection error caused by avoiding pressure unbalanced so that the certain build-up tolerance of contact measurement module tolerable.

Brief description of the drawings

Fig. 1 is prior art contact measurement module sectional view；

Fig. 2 is the electronic equipment schematic diagram of one embodiment of the utility model；

Fig. 3 is the contact measurement module first angle stereogram of one embodiment of the utility model；

Fig. 4 is the contact measurement module second angle stereogram of one embodiment of the utility model；

Fig. 5 is the capacitance and capacitive detection circuit cooperation schematic diagram of one embodiment of the utility model；

Fig. 6 is the contact measurement module explosive view of one embodiment of the utility model；

Fig. 7 is the contact measurement module sectional view of one embodiment of the utility model；

Fig. 8 is the contact measurement module sectional side view of one embodiment of the utility model；

Fig. 9 is the exemplary contact measurement module sectional view of the utility model first；

Figure 10 is the exemplary contact measurement module sectional view of the utility model second；

Figure 11 a are the 3rd exemplary contact measurement module sectional views of the utility model；

Figure 11 b are partial enlarged views in Figure 11 a；

Figure 12 a are the 4th exemplary contact measurement module sectional views of the utility model；

Figure 12 b are that the utility model the 4th exemplary first electrode and second electrode are bent schematic diagram；

Figure 13 is the 5th exemplary contact measurement module sectional view of the utility model；

Figure 14 is the 6th exemplary contact measurement module sectional view of the utility model；

Figure 15 is the 7th exemplary contact measurement module sectional view of the utility model.

Embodiment

The utility model is described in detail below with reference to embodiment shown in the drawings.But these embodiment party Formula is not intended to limit the utility model, structure that those of ordinary skill in the art are made according to these embodiments, method or Conversion functionally is all contained in the scope of protection of the utility model.

In each diagram of the application, for the ease of illustration, structure or partial some sizes can be relative to other knots Structure or part are exaggerated, and therefore, are only used for the basic structure of the theme of diagram the application.

In addition, it is used herein for example " on ", " top ", " under ", the term of the representation space relative position such as " lower section " be A unit as shown in the drawings or feature are described relative to another unit or feature for the purpose easy to explanation Relation.The term of relative space position can be intended to include equipment in use or work in addition to orientation shown in figure not Same orientation.If for example, by figure equipment overturn, be described as being located at other units or feature " lower section " or " under " Unit will be located at other units or feature " top ".Therefore, exemplary term " lower section " can include above and below both Orientation.Equipment can be otherwise directed（It is rotated by 90 ° or other directions）, and correspondingly explain it is used herein with it is empty Between relevant description.

As shown in Fig. 2, the part-structure schematic diagram of the electronic equipment 100 for one embodiment of the utility model.

Electronic equipment 100 includes housing 101 and contact measurement module 10.

There is a hole 1011 for accommodating the contact measurement module 10 on the housing 101.

Electronic equipment 100 carries out the sensing of pressing signal by contact measurement module 10.

It should be noted that electronic equipment 100 can be mobile phone, PAD, e-book etc..

In the present embodiment, contact measurement component 11, capacitance are included with reference to Fig. 3 to Fig. 8, contact measurement module 10 12 and capacitive detection circuit 13.

Contact measurement component 11 is used to receive pressing operation.

Contact measurement component 11 can be fingerprint recognition component, and at this time, contact measurement module 10 is used for fingerprint signal Sensing, fingerprint signal can for example carry out unlock operation, application program delivery operation of electronic equipment 100 etc..

Certainly, contact measurement component 11 or other assemblies, are not limited with described above.

Contact measurement component 11 includes becket 111, cover board 112 and fingerprint sensor 113.

The outer contour of cover board 112 is rounded, and cover board 112 is used to receive pressing operation.

Certainly, cover board 112 or other forms, are, for example, kidney ellipsoid etc..

Formed with stage portion 1111, which is used to carry cover board 112 for the inner side of becket 111.

Fingerprint sensor 113 is arranged at the lower section of cover board 112.

In the present embodiment, capacitance 12 includes first electrode 121, the second electrode 122 being oppositely arranged, first electricity Pole 121 and second electrode 122 are arranged on the bottom of contact measurement component 11.

Here, " bottom of contact measurement component 11 " substantially refers to the first electrode 121 and second electrode 122 at least Part protrudes out contact measurement component 11, with reference to Fig. 8, it can be seen that the cladding the completely of contact measurement component 11 at this time One electrode 121 and second electrode 122, second electrode 122 are exposed to the outside of becket 111.

First electrode 121 and second electrode 122 are positioned at the lower section of contact measurement component 11, contact measurement component 11 It is under pressure under pressing operation, at this time, the first electrode 121 and second electrode 122 are subject to lower pressure, first electrode 121 The distance between second electrode 122 reduces.

Stroke Control element 123, the Stroke Control member are additionally provided between first electrode 121 and second electrode 122 Part 123 is stiffener, and the Stroke Control element 123 has elasticity and is used to support contact measurement component 11, and described Stroke Control element 123 provides the pressing force produced with pressing operation reverse reset force.

Here, Stroke Control element 123 has two effects, first, the shape between first electrode 121 and second electrode 122 At interval so that first electrode 121 and second electrode 122 form air capacitance；Second, first electrode 121 and second electrode 122 when being subject to the lower pressure to bend, and the relative maximum stroke between first electrode 121 and second electrode 122 is subject to Stroke Control first Part 123 limits.

In the present embodiment, Stroke Control element 123 is hollow type flexible member, concretely hollow circular ring-type bullet Property element, first electrode 121 and second electrode 122 are flexible steel disc, the elastic force of its own can make its be subject to by Press operation recovers after deforming upon.

One of described first electrode 121 and the second electrode 122 connect the capacitive detection circuit 13, wherein Another connection ground terminal GND.

Here, capacitive detection circuit 13 is used to detect the capacitance that the first electrode 121 and second electrode 122 are formed.

Specifically, capacitive detection circuit 13 is used to detect the first electrode 121 and second electrode 122 in contact measurement The variable quantity of the capacitance 12 when being under pressure under the pressing operation that component 11 receives, such as in the electricity of first electrode 121 and second When pole 122 is because of pressure generation elastic deformation, the distance between first electrode 121 and second electrode 122 reduce, related according to capacitance Formula（C=ε S/4 π kd, C=Q/U, wherein, C is capacitance, and ε is constant, and for S between first electrode and second electrode, d is power-on and power-off The distance of pole plate, k are electrostatic force constant, and Q is the quantity of electric charge, and U is voltage）, it can be seen that when the pressure of the pressing operation received When force value N increases, distance d reduces, and quantity of electric charge Q increases, quantity of electric charge Q and pressure value N are proportional, that is to say, that capacitance detecting electricity Road 13 can detect the size of capacitance by way of detecting electric charge, so as to measure the big of the pressure value N of pressing operation indirectly It is small.

Here, the capacitance 12 of contact measurement module 10 is simple in structure located immediately at the lower section of contact measurement component 11, Process complexity is low, long lifespan, and coordinates capacitive detection circuit 13 to carry out the quantity of electric charge-pressure value（Q-N）Detection, realize capacitance The detection process of 13 pressure value N of detection circuit limits from the precision of depressed position, detects and misses caused by avoiding pressure unbalanced Difference so that the certain build-up tolerance of 10 tolerable of contact measurement module.

It should be noted that identification operation and the inspection of pressing operation pressure value N of the contact measurement module 10 for fingerprint Surveying between operating does not have inevitable precedence relationship, it can be depending on actual conditions.

In the present embodiment, the contact measurement module 10 further includes fore-set 15, and the fore-set 15 is positioned at described the 122 lower surface intermediate region of one electrode, 121 upper surface intermediate region and/or the second electrode.

Here, by taking fore-set 15 is located at the intermediate region of second electrode 122 as an example.

Fore-set 15 can be integrally formed with second electrode 122, or the intermediate region of second electrode 122 is formed described in a receiving The groove of fore-set 15 to stablize the position of fore-set 15, and or, when contact measurement module 10 is assembled in electronic equipment 100 When, utilize some structural members in electronic equipment 100（Such as the elastic piece structure in metal dome）As fore-set 15.

In the present embodiment, it is a solid cylinder structure to withstand 15, and second electrode 122 is withstood in the upper end, its lower end branch Support is on the mechanical structure inside electronic equipment 100.

It can be seen that the stress area area of capacitance 12 is more than the stress area area of the fore-set 15.

When contact measurement module 10 receives pressing operation, under the effect of fore-set 15, even the pressure value of very little The distance between N, the first electrode 121 and the second electrode 122 can also change, in this way, easy to improve detection spirit Sensitivity, moreover, the setting of fore-set 15 can effectively determine the depressed position of capacitance 12, improves accuracy of detection.

With reference to preceding description, suffered by the quantity of electric charge Q and capacitance 12 detected due to the capacitive detection circuit 13 of present embodiment Pressure value N it is proportional, it is and unrelated with the depressed position of capacitance 12, allow the installation site of fore-set 15 to change or deposit at this time In certain build-up tolerance, assembly difficulty and process complexity are reduced.

In the present embodiment, contact measurement module 10 further includes flexible PCB 16, and flexible PCB 16 is to electricity Property the connection capacitance 12 and capacitive detection circuit 13.

The first surface of flexible PCB 16 and fingerprint recognition component（Contact measurement component 11）It is electrically connected, flexible electrical The second surface of road plate 16 forms the first electrode 121, and the second surface is oppositely arranged with the first surface.

The flexible PCB 16 is bent at least partly to coat 121 upper surface of first electrode and the second electrode 122 lower surfaces, and formed with the through hole 161 passed through for the fore-set 15 on the flexible PCB 16, but be not limited.

It is appreciated that first electrode 121 and second electrode 122 are electrical by flexible PCB 16 and capacitive detection circuit 13 Connection, and the upper surface of flexible PCB 16 is connected with fingerprint sensor 113, in this way, realizing whole contact measurement module Orderly close connection inside 10.

In the present embodiment, the thickness of first electrode 121 is more than the thickness of second electrode 122, and first electrode 121 is pasted Close at the back side of flexible PCB 16, it is opposite that first electrode 121 with fingerprint sensor 113 is fitted in flexible PCB 16 respectively The relevant position of both sides.

Here, first electrode 121 not only acts as the effect of electrode, also acts as the effect of chip stiffening plate, chip stiffening plate It is the reinforcer for preventing 113 stress of fingerprint sensor from rupturing.

First electrode 121 is used as chip stiffening plate at the same time, can reduce whole contact measurement module 10 in longitudinal direction Thickness on direction.

In the following, introducing several specific examples of the utility model capacitance 12, in terms of description, similar component is using similar Numbering.

In the first example, it is arranged on contact measurement component 11 with reference to Fig. 9, first electrode 121a and second electrode 122a Bottom.

Stroke Control element 123a between first electrode 121a and second electrode 122a is flexible member, and Stroke Control is first Part 123a is full slice system structure.

In fig.9, Stroke Control element 123a is filled with the gap between first electrode 121b and second electrode 122b, OK Process control element 123a is flexible dielectric materials layer, and preferable dielectric material is elastic insulated foam, foam it is microcosmic Inside configuration has many hollow holes, which can maintain the elasticity of foam.

In the second example, with reference to Figure 10, first electrode 121b and second electrode 122b are arranged on contact measurement component 11 bottom.

The second exemplary exemplary Stroke Control element 123a material identicals of Stroke Control element 123b and first, it is distinguished It is, the second exemplary Stroke Control element 123b is hollow annular structure.

In the 3rd example, with reference to Figure 11 a, first electrode 121c and second electrode 122c are arranged on contact measurement component 11 inside.

Here, " inside of contact measurement component 11 " substantially refers to the first electrode 121c and second electrode 122c In the space that contact measurement component 11 surrounds, with reference to Figure 11 a, it can be seen that contact measurement component 11 wraps completely at this time Cover first electrode 121c and second electrode 122c.

Fingerprint sensor 113c is fitted in the bottom of cover board 112c, the bottom of fingerprint sensor 113c and flexible circuit Plate 16c is bonded, and first electrode 121c, second electrode are set in one sides of the flexible PCB 16c away from fingerprint sensor 113c 122c is arranged on the lower section of first electrode 121c, and certain interval is formed between first electrode 121c and second electrode 122c.

Here, flexible PCB 16c only coats the upper surface of the first electrode 121c.

In this example, contact measurement module 10 further includes to support the supporting parts of the contact measurement component 11 114c, supporting parts 114c are located at the bottom of becket 111c, and supporting parts 114c and becket 111c are integrally formed.

A perforate being pierced by for flexible PCB 16c is formed between supporting parts 114c and becket 111c.

The place of the supporting parts 114c forms the second electrode 122c, and here, the second electrode 122c is installed on institute State on integrally formed supporting parts 114c to form capacitance, unlike the first example, the second example, this exemplary flexible electrical Road plate 16c need not bend the cladding second electrode 122c with part.

In this example, Stroke Control element 123c is arranged on the stage portion 1111c inside becket 111c, cover board 112c is fixed on Stroke Control element 123c, and Stroke Control element 123c is elastic foam, Stroke Control element 123c Thickness be less than gap between first electrode 121c and second electrode 122c so that first electrode 121c and second electrode 122c Between will not short circuit when reaching maximum relative travel.

With reference to Figure 11 b, inside the foam of Stroke Control element 123c there is hollow stomata 1231c, stomata 1231c to cause Foam has elasticity, so that Stroke Control element 123c can restore to the original state after compression.

In the 4th example, contact is arranged on reference to Figure 12 a and Figure 12 b, first electrode 121d and second electrode 122d The inside of detection components 11.

Fingerprint sensor 113d is fitted in the bottom of cover board 112d, fingerprint sensor 113d bottoms and flexible PCB 16d is bonded, and first electrode 121d, first electrode are set in one sides of the flexible PCB 16d away from fingerprint sensor 113d 121d is bonded and realizes with flexible PCB 16d and is electrically connected, and second electrode 122d is arranged on the lower section of first electrode 121d, and first Certain interval is formed between electrode 121d and second electrode 122d, unlike the 3rd example, this is exemplary in first electrode Hollow-type dielectric material 124d, such as glass, ceramics, sapphire etc. are provided between 121d and second electrode 121d.

In this example, supporting parts 114d, supporting parts 114d and becket 111d are provided with the bottom of becket 111d It is integrally formed, it is provided with supporting parts 114d bottom centre positions and withstands 15d.

It should be noted that fore-set 16d can also be a part of supporting parts 114d.

With reference to Figure 12 b, under the pressure effect of pressing operation, the second electrode 122d centers can be with withstanding The resistance of 15d and elastic deformation occurs, the peripheral edge margin of first electrode 121d and second electrode 122d is because there is hollow-type dielectric Material 124d is supported without deforming upon.

In this example, first electrode 121d and second electrode 122d are made of flexible steel disc, are arranged on cover board The foam of formation Stroke Control element 123d between 112d and stage portion 1111d cover board 112d from operation pressing force when, Auxiliary cover plate 112d resets.

It should be noted that hollow-type dielectric material 124d here can be or phase similar with Stroke Control element 123d Same structure, explanation below are also identical.

In the 5th example, with reference to Figure 13, first electrode 121e and second electrode 122e are arranged on contact measurement component 11 inside.

Fingerprint sensor 113e is fitted in cover board 112e bottoms, fingerprint sensor 113e bottoms and flexible PCB 16e is bonded, and first electrode 121e, second electrode are set in one sides of the flexible PCB 16e away from fingerprint sensor 113e 122e is arranged on the lower section of first electrode 121e, and certain interval is formed between first electrode 121e and second electrode 122e, in institute Filled dielectric material 124e in gap is stated, dielectric material 124e is full slice system, and the dielectric material 124e is foam, in foam Inside has stomata, and stomata causes foam to have elasticity.

In this example, pressing operation compression foam, the gap shrinks between first electrode 121e and second electrode 122e, The change of capacitance is detected using corresponding capacitive detection circuit, the size of pressure is pacified in capacitance variations reflection when operating.

In this example, it is arranged on the formation Stroke Control between stage portion 1111e in cover board 112e and becket 111e When cover board 112e is from operation pressing force, auxiliary cover plate 112e resets the foam of element 123e.

In the 6th example, with reference to Figure 14, first electrode 121f and second electrode 122f are arranged on contact measurement component 11 inside.

Fingerprint sensor 113f is fitted in cover board 112f bottoms, fingerprint sensor 113f bottoms and flexible PCB 16f is bonded, and first electrode 121f, second electrode are set in one sides of the flexible PCB 16f away from fingerprint sensor 113f 122f is arranged on the lower section of first electrode 121f, and first electrode 121f and second electrode 122f forms certain interval, between described Filled dielectric material 124f in gap, the dielectric material 124f are foam, have stomata in the inside of foam, stomata causes foam With elasticity.

Unlike the 5th example, the dielectric material between this exemplary first electrode 121f and second electrode 122f 124f is elastic hollow structure.

In cover board 112f described in pressing operation, the gap shrinks between first electrode 121f, second electrode 122f, utilize Corresponding capacitive detection circuit detects the change of capacitance, the size of pressing force when capacitance conversion reflection operates.

In this example, first electrode 121f and second electrode 122f are made of flexible steel disc, are arranged on cover board The foam of formation Stroke Control element 123f between stage portion 1111f in 112f and becket 111f cover board 112f from When operating pressing force, auxiliary cover plate 112f resets.

In the 7th example, with reference to Figure 15, first electrode 121g and second electrode 122g are arranged on contact measurement component 11 inside.

Fingerprint sensor 113g is fitted in cover board 112g bottoms, fingerprint sensor 113g bottoms and flexible PCB 16g is bonded, and unlike the 6th example, this example first electrode 121g is formed directly into flexible PCB 16g away from fingerprint The one side of sensing chip 113g.

In this example, supporting parts 114g, supporting parts 114g and becket 111g are provided with the bottom of becket 111g Integrally formed, unlike the 6th example, this example directly uses supporting parts 114g as second electrode 122g.

In this example, the first independent 121g is omitted, second electrode 122g these parts can reduce whole contact The thickness of module 10 is detected, while reduces complexity.

It should be noted that the structure explanation of the contact measurement module 10 of the utility model is not limited with above-mentioned example, Above-mentioned example also can reasonably be combined and form new example.

It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one A independent technical solution, this narrating mode of specification is only that those skilled in the art will should say for clarity For bright book as an entirety, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can With the other embodiment of understanding.

The a series of tool for describing the feasibility embodiment only for the utility model in detail of those listed above Body illustrates that they are simultaneously not used to limitation the scope of protection of the utility model, all to be made without departing from the utility model skill spirit Equivalent implementations or change should be included within the scope of protection of this utility model.

Claims

A kind of 1. contact measurement module, it is characterised in that including：

Contact measurement component, it is used to receive pressing operation；

First electrode and the second electrode set in contrast, the distance between first electrode and second electrode are examined with contact Survey component and receive pressing operation reduction；

Stroke Control element, for contact limiting type detection components receive pressing operation when the first electrode and second electrode it Between maximum relative travel；

Capacitive detection circuit, the capacitance formed for detecting the first electrode and second electrode.
2. contact measurement module according to claim 1, it is characterised in that the contact measurement component is known for fingerprint Other component.
3. contact measurement module according to claim 2, it is characterised in that the first electrode and second electrode are set In the inside of fingerprint recognition component.
4. contact measurement module according to claim 3, it is characterised in that the first electrode and second electrode are set Below the fingerprint recognition component.
5. contact measurement module according to claim 4, it is characterised in that the Stroke Control element have elasticity and Fingerprint recognition component is used to support, and the Stroke Control element provides the pressing force produced with pressing operation reverse reset Power.
6. contact measurement module according to claim 4, it is characterised in that the Stroke Control element is arranged on first Between electrode and second electrode, the bottom of the second electrode sets fore-set, and the fore-set is located at the second electrode lower surface Intermediate region.
7. contact measurement module according to claim 6, it is characterised in that the Stroke Control element is stiff domain Part.
8. contact measurement module according to claim 4, it is characterised in that the Stroke Control element is arranged on first Between electrode and second electrode, Stroke Control element has elasticity.
9. contact measurement module according to claim 8, it is characterised in that the Stroke Control element is hollow type bullet Property element.
10. contact measurement module according to claim 4, it is characterised in that have in contact measurement module internal Flexible PCB, first surface and the fingerprint recognition component of flexible PCB are electrically connected, the second surface shape of flexible PCB Into the first electrode, the second surface is oppositely arranged with the first surface.
11. contact measurement module according to claim 3, it is characterised in that contact measurement module further include to The supporting parts of the fingerprint recognition component are supported, the second electrode is formed at the supporting parts.
12. contact measurement module according to claim 2, it is characterised in that the first electrode and second electrode are set Put in the bottom of fingerprint recognition component.
13. contact measurement module according to claim 12, it is characterised in that the Stroke Control element is arranged on Between one electrode and second electrode, the bottom of the second electrode sets fore-set, and the fore-set is located at the second electrode following table Face intermediate region.
14. contact measurement module according to claim 13, it is characterised in that contact measurement module further includes flexibility Circuit board, flexible PCB are bent at least partly to coat the first electrode upper surface and the second electrode lower surface, and Formed with the through hole passed through for the fore-set on the flexible PCB.
15. contact measurement module according to claim 13, it is characterised in that the Stroke Control element is in rigidity Casement element.
16. contact measurement module according to claim 12, it is characterised in that the Stroke Control element has elasticity And set between the first electrode and the second electrode.
17. contact measurement module according to claim 16, it is characterised in that the Stroke Control element is hollow type Flexible member.
18. the contact measurement module according to any one in claim 1-17, it is characterised in that the first electrode And the second electrode is made of steel disc.
19. a kind of electronic equipment, it is characterised in that including the housing with hole and such as any one institute in claim 1-17 The contact measurement module stated, the contact measurement module are located in described hole.