CN206594688U - A kind of detachable optical finger print module fixed support for touching circuit - Google Patents
A kind of detachable optical finger print module fixed support for touching circuit Download PDFInfo
- Publication number
- CN206594688U CN206594688U CN201720276443.2U CN201720276443U CN206594688U CN 206594688 U CN206594688 U CN 206594688U CN 201720276443 U CN201720276443 U CN 201720276443U CN 206594688 U CN206594688 U CN 206594688U
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- CN
- China
- Prior art keywords
- finger print
- optical finger
- print module
- fixed
- touch
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Abstract
The utility model is related to a kind of detachable optical finger print module fixed support for touching circuit, including optical finger print module fixed support, and the optical finger print module fixed support is provided with side shield；Side shield is stretched out by sensing film trap, is welded on touch induction circuit plate, touch induction circuit plate is fixed on side shield by touch induction circuit plate fixed column provided with sensing film trap, the sensing chip tie point of touch sensible piece；Shell junction button one end be fixed in touch induction circuit plate fixed column, the other end be fixed to the same side support fixing hole at.The beneficial effects of the utility model are：(1) plane where having used the product of the support, touch sensible piece and finger touch surface are in same plane, and point of high low area is not present in touch sensitivity, and sensitivity is uniformly distributed, and substantially increases Consumer's Experience.(2) sensor circuit and sensing chip, and ESD protection circuit are integrated with.(3) touching circuit board can dismantle, convenient apolegamy buying.
Description
Technical field
The utility model is related to a kind of fixed support, more particularly to a kind of detachable optical finger print module for touching circuit is consolidated
Fixed rack.
Background technology
Using the product of optical finger print module, touch induction circuit is often damaged by static electricity.Conventional optical refers on the market
The communication interface pin of line module is without ESDGND pins；ESD protection for touch induction circuit in optical finger print module is needed
Increase ESD protection device and extraction ESDGND pins do Releasing loop；Interface can not be with old production if ESDGND pins are added
Product are compatible；If drawing ESDGND pins, while user's cooperation is also required to, by the outer of the ESDGND pins of extraction and end product
Connect shell, can be only achieved the optimum efficiency of electrostatic protection.But in the assembling process of optical finger print module, client needs welding
A piece wire is simultaneously fixed on shell；Thus to client additionally increase by one procedure, it is cumbersome, easily go out it is not connected,
Bad connection problem.
Because the promotion and application of early stage product, the product master control borad of significant portion of client designed finish and batch
Production, and optical finger print module connecting communication interface also according to traditional six cores Interface design, will not be by increased ESDGND
Pin is connected on circuit, so design and the extra ESDGND that draws that electrostatic circuit protection is added in module are drawn
Pin, may not also can embody improvement and upgrading point on end product.
Touch sensitivity distribution is unequal.Installed in this structure after sensing chip, sensing chip stationary plane and finger press surface
Not in same plane, two faces, which exist, to intersect, and the sensitivity of the top and bottom of prism is different.Finger touches place face to sensing
The shorter sensitivity of distance in face is higher where piece.
Together with touch sensible part is designed with module, module integral installation is fixed on fixed support, is arranged by six cores
Interface is connected on line and the master control borad of client.When client is if any non-tactile induction module demand, such design can only be by with tactile
The module for touching sensing is integrally taken apart, is then replaced with non-tactile induction module, it is impossible to neatly adopted to touching part progress apolegamy
Purchase.
Current optical finger print module product is increasingly minimized, and pcb board effective area is also progressively reducing.But touch sense
Circuit is answered to need certain PCB surface product and space to carry out mask placement device, touch PAD and Anti-interference Design, electrostatic discharge protection circuit
Need that certain PCB surface is accumulated and discharge loop is designed in space, it is to avoid the voltage of superelevation be applied to fingerprint algorithm process chip and
Above fingerprint collecting sensor, cause device failure.
Utility model content
The purpose of this utility model is that offer is a kind of rational in infrastructure, the equally distributed detachable touch circuit of sensitivity
Optical finger print module fixed support.
The detachable optical finger print module fixed support for touching circuit, including optical finger print module fixed support, the light
Learn fingerprint module fixed support and be provided with side shield；Side shield is provided with sensing film trap, the sensing chip tie point of touch sensible piece
Stretched out, be welded on touch induction circuit plate, touch induction circuit plate is fixed by touch induction circuit plate by sensing film trap
Post is fixed on side shield；Shell junction button one end be fixed in touch induction circuit plate fixed column, the other end is fixed to same
At the support fixing hole of side.
As preferred：Neck raised line, neck raised line and baffle limiting are additionally provided with the optical finger print module fixed support
Optical finger print module is fixedly mounted；Optical finger print module back is pressed in provided with module clip, module clip is connected to optics
At the support bracket fastened module fixing hole of fingerprint module.
As preferred：The support fixing hole, module fixing hole, side shield and neck raised line are that optical finger print module is fixed
It is integrally formed on support.
The beneficial effects of the utility model are:
(1) plane where having used the product of the support, touch sensible piece and finger touch surface touch spirit in same plane
Point of high low area is not present in sensitivity, and sensitivity is uniformly distributed, and substantially increases Consumer's Experience.
(2) sensor circuit and sensing chip, and ESD protection circuit are integrated with.It is prevented in the source produced in electrostatic
Shield, electrostatic protection effect is better than original design.The Connection Step of ESDGND pins and shell can be omitted, in the process of mounting bracket
In achieve that.Special procedure is not needed.
(3) touching circuit board can dismantle, convenient apolegamy buying.Fixed support and non-tactile module must be used, buying
Touch pad, is installed on fixed support with regard to realizing the touch sensible fingerprint module scheme connected with having shell.Do not install
Touch pad is exactly the general fingerprint module scheme without touch sensible.It can just realize that all apolegamys are equal by the winding displacement of one-to-two
Master control plate interface need not be changed, it is not required that the effect of extra increase pin.Using mode of the present utility model, feel touching
Answer circuit independent, and the separated integral installation schematic diagram of module is shown in Fig. 8.
(4) optical finger print module can be designed not comprising touch sensing unit, and the PCB surface product for saving a part does more
Optimization design.
Brief description of the drawings
Fig. 1 is that optical finger print module is arranged on fixed support right view；
Fig. 2 is that optical finger print module is arranged on fixed support rearview；
Fig. 3 is the detachable fixed support rearview for touching circuit；
Fig. 4 is that optical finger print module is arranged on fixed support front view；
Fig. 5 is touch sensible piece schematic diagram；
Fig. 6 is shell ground junction button schematic diagram；
Fig. 7 is independent touch circuit diagram；
Fig. 8 is the integral installation schematic diagram that touch sensible is integrated in module；
Description of reference numerals：Optical finger print module fixed support 9, support fixing hole 10, module fixing hole 11, side shield
12nd, neck raised line 13, sensing film trap 14, touch induction circuit plate 15, sensing chip paste area 16, touch induction circuit plate fixed column
17th, touch sensible piece 18, sensing chip tie point 19, module clip 20, shell ground junction button 21, optical finger print module 22.
Embodiment
The utility model is described further with reference to embodiment.The explanation of following embodiments is only intended to help and managed
Solve the utility model.It should be pointed out that for those skilled in the art, not departing from the utility model principle
On the premise of, some improvement and modification can also be carried out to the utility model, these are improved and modification also falls into the utility model
In scope of the claims.
As shown in Figures 1 to 8, the optical finger print module fixed support with touch induction circuit in present embodiment.
The fixed support can be plastic material or metal, the material such as alloy.It is responsible for fixed matching angle, chi
The optical finger print module of very little and structure；Different difference designs can be done with the outward appearance of combination product, the factor such as structure and angle.
Have on the fixed support sensing chip paste area, 2 side shields, 1 clamp bar slot raised line, 2 module fixing holes, 2 touch
Template fixed column and 4 support fixing holes.There is sensing film trap on side shield.
When optical finger print module is installed, it need to use two-sided conducting resinl that touch sensible piece is pasted into sensing chip in advance and paste
Area, sensing film trap of the touch sensible piece on side shield stretches out sensing chip tie point.
Face where then optical finger print module to be gathered to the prism of fingerprint is placed on sensing chip, passes through 2 side shields, 1
Optical finger print module is fixed on the fixed support by clamp bar slot raised line and module clip.
Touch circuit independent, be fixed in the form of independent one block of plate on the side shield of side.Touch induction circuit
Side shield fixed column is coordinated to be equipped with two holes in fixed bit on plate, hole surrounding has the metal pad of enough area size.Touch sense
Answer in the touch induction circuit plate fixed column that circuit board is installed on side shield and clamping.The sensing chip tie point of stretching passes through weldering
Connect, the mode such as plug wire is connected to the touch PAD networks of touch pad.
Touch induction circuit plate the 4th pin (ESDGND) and fixing hole electrical connection, by shell junction button fix
To one of support fixing hole, connected using metal screws；Ensure when installing module carrier, can be real by fixed screw
The electrical characteristic of existing ESDGND pins and shell is effectively connected.Circuit diagram is as shown in Figure 7.
The circuit external interface is four cores, and interface is described in detail and see the table below.
| Pin number | Title | Function is described |
| 1 | VCC | Touch sensible power input, 3.3V |
| 2 | SOUT | Induced signal is exported |
| 3 | GND | Signal ground |
| 4 | ESDGND | Electro-static Driven Comb, it is connected electrically to shell |
As shown in Figures 1 to 4, integrally formed support fixing hole 10, module are included on optical finger print module fixed support 9
Fixing hole 11, side shield 12, neck raised line 13.
Wherein there are three sensing film traps 14, three projections of touch sensible piece 18, sense in the position defined above of side shield 12
Answer piece tie point 19 to be stretched out by sensing film trap 14, be welded on touch induction circuit plate 15, touch induction circuit plate 15 passes through
Touch induction circuit plate fixed column 17 is fixed on above side shield 12.
Optical finger print is fixed on by side shield 12, neck raised line 13, module clip 20 when optical finger print module is installed
Above module fixed support 9.
Module clip 20 is pressed in the back of optical finger print module 22, and the mistake of module clip 20 is passed through by two screws
Hole, is connected at the module fixing hole 11 of optical finger print module fixed support 9.
Shell could be installed after touch induction circuit plate 15 is installed junction button 21.Shell junction button 21 be metal
Material, by shell junction button one end be fixed in touch induction circuit plate fixed column 17, the other end need to be solid by metal screws
Surely arrive at the support fixing hole 10 of the same side, reach ESDGND networks and the effect of shell electrical connection on touch pad.Shell
Junction button 21 has two holes above, and hole K1 is needed to use through touch induction circuit plate fixed column 17, and hole K2 is needed through support
Fixing hole 10 is used.
Claims (3)
1. a kind of detachable optical finger print module fixed support for touching circuit, it is characterised in that：It is solid including optical finger print module
Fixed rack (9), the optical finger print module fixed support (9) is provided with side shield (12)；Side shield (12) is provided with sensing chip
Groove (14), the sensing chip tie point (19) of touch sensible piece (18) is stretched out by sensing film trap (14), is welded on touch sensible electricity
On road plate (15), touch induction circuit plate (15) is fixed on side shield (12) by touch induction circuit plate fixed column (17)；
Shell junction button (21) one end be fixed in touch induction circuit plate fixed column (17), the other end be fixed to the same side support
Fixing hole (10) place.
2. the detachable optical finger print module fixed support for touching circuit according to claim 1, it is characterised in that：It is described
Neck raised line (13), neck raised line (13) and the spacing fixed peace of baffle plate (12) are additionally provided with optical finger print module fixed support (9)
Fill optical finger print module (22)；Optical finger print module (22) back, module clip (20) are pressed in provided with module clip (20)
It is connected to module fixing hole (11) place of optical finger print module fixed support (9).
3. the detachable optical finger print module fixed support for touching circuit according to claim 2, it is characterised in that：It is described
Support fixing hole (10), module fixing hole (11), side shield (12) and neck raised line (13) are optical finger print module fixed support
(9) it is integrally formed on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720276443.2U CN206594688U (en) | 2017-03-21 | 2017-03-21 | A kind of detachable optical finger print module fixed support for touching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720276443.2U CN206594688U (en) | 2017-03-21 | 2017-03-21 | A kind of detachable optical finger print module fixed support for touching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206594688U true CN206594688U (en) | 2017-10-27 |
Family
ID=60124793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720276443.2U Active CN206594688U (en) | 2017-03-21 | 2017-03-21 | A kind of detachable optical finger print module fixed support for touching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206594688U (en) |
-
2017
- 2017-03-21 CN CN201720276443.2U patent/CN206594688U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |