CN202058175U - Fingerprint identification system - Google Patents
Fingerprint identification system Download PDFInfo
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- CN202058175U CN202058175U CN2011201552928U CN201120155292U CN202058175U CN 202058175 U CN202058175 U CN 202058175U CN 2011201552928 U CN2011201552928 U CN 2011201552928U CN 201120155292 U CN201120155292 U CN 201120155292U CN 202058175 U CN202058175 U CN 202058175U
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- fingerprint recognition
- recognition system
- fingerprint
- conductive component
- fingerprint sensor
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Abstract
The utility model provides a fingerprint identification system comprising an insulating substrate, a fingerprint sensor and a driving circuit, a membrane and a conducting part, wherein the fingerprint sensor and the driving circuit are arranged on the insulating substrate; the fingerprint sensor is used for detecting the fingerprint information; the driving circuit is electrically connected with the fingerprint sensor and is used for controlling the fingerprint sensor and processing the fingerprint information detected by the fingerprint sensor; the membrane covers on the fingerprint sensor and is used for providing a contact surface for fingerprint identification; and the conducting part is arranged on the contact surface and is connected with an earth terminal. Static charges are generated when the finger is contacted with the membrane and are transmitted to the earth terminal by the conducting part so that the damage on the fingerprint identification system owning to the static discharge can be avoided and the reliability of the fingerprint identification system can be improved.
Description
Technical field
The utility model relates to the semiconductor transducer technical field, relates in particular to a kind of fingerprint recognition system.
Background technology
Along with the development of fingerprint identification technology, fingerprint recognition system is used in daily life more and more, and for example fingerprint identification entrance guard system has the notebook computer of fingerprint recognition etc.
Needs finger contact fingerprint recognition system whether when carrying out fingerprint recognition can be divided into fingerprint recognition system contact and contactless.
In the patent No. is in the Chinese patent of ZL200510063595.6, discloses a kind of contact fingerprint recognition system, with reference to figure 1, shows the synoptic diagram of fingerprint recognition system in the described patent.Described fingerprint recognition system comprises: fingerprint sensor 105, the voltage generator 101 of alternating voltage is provided to fingerprint sensor 105, provide the power suppling part 102 of working power to fingerprint sensor 105, the information of surveying from fingerprint sensor 105 is obtained the control part 104 of fingerprint pattern.During finger contact fingerprint sensor 105, because the conductive characteristic of finger skin, voltage generator 101 can provide the voltage of characteristic frequency to finger surface, fingerprint sensor 105 surveys because the voltage difference that the projection of fingerprint pattern and depression are produced, and with described voltage difference information conveyance to control part 104, described control part 104 obtains fingerprint pattern by the voltage difference information at surface of contact diverse location place, thereby finishes the process of fingerprint recognition.
In described patent, what fingerprint sensor was surveyed is voltage signal.In addition, also have other contact fingerprint recognition system, for example, survey the fingerprint recognition system of electric capacity or contact resistance.But fingerprint recognition system for contact, because finger can carry static, when finger contacts with fingerprint recognition system, be easy to generate static discharge, and the instantaneous power that static discharge produces can be damaged fingerprint sensor, when serious even cause fingerprint sensor to scrap, this has reduced the reliability of fingerprint recognition system.
The utility model content
The utility model solves provides the higher fingerprint recognition system of a kind of reliability.
For addressing the above problem, the utility model provides a kind of fingerprint recognition system, and described fingerprint recognition system comprises: insulated substrate; Be positioned at fingerprint sensor and driving circuit on the described insulated substrate, described fingerprint sensor is used to survey finger print information, and described driving circuit is electrically connected with described fingerprint sensor, is used to control fingerprint sensor and handle the finger print information that fingerprint sensor detects; Be covered in the film on the described fingerprint sensor, described film is used to provide the surface of contact of fingerprint recognition; Be positioned at the conductive component on the surface of contact, described conductive component is held with being connected in.
Also comprise the shell of end, described shell comprises the opening that exposes described surface of contact with being connected in, and described conductive component is connected in described shell.
Shell is positioned on the described conductive component, and contacts with described conductive component.
Described conductive component is a bus.
Described conductive component is the conduction disk.
Described bus is arranged along horizontal, the vertical or diagonal of opening.
The two ends of described bus all contact with shell.
Described bus runs through described opening.
One end of described bus contacts with shell, and the other end is arranged on the surface of contact.
Described driving circuit comprises a plurality of electronic components, the one or more pins of end that are provided with in the described electronic component with being connected in, and described conductive component is connected in described pin.
Compared with prior art, the utlity model has following advantage:
Be provided with the conductive component that is positioned on the surface of contact, described conductive component is held with being connected in, when the user carries out fingerprint recognition, the electrostatic charge that finger carries is exported to the ground end by described conductive part, thereby avoid producing strong immediate current, and then avoided static discharge that fingerprint recognition system is damaged, improved reliability of products.
Description of drawings
Fig. 1 is the synoptic diagram of prior art fingerprint recognition system;
Fig. 2 is the synoptic diagram of a kind of embodiment of the utility model fingerprint recognition system;
Fig. 3 is the synoptic diagram of another embodiment of fingerprint recognition system shown in Figure 2;
Fig. 4 is the fingerprint recognition system shown in Figure 2 synoptic diagram of an embodiment again.
Specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, specific embodiment of the utility model is described in detail below in conjunction with accompanying drawing.
Set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here and implements with multiple, and those skilled in the art can do similar popularization under the situation of the utility model intension.Therefore the utility model is not subjected to the restriction of following public specific embodiment.
In the prior art, when finger contacts with fingerprint recognition system, be easy to generate the static discharge phenomenon, static discharge can produce strong instantaneous power, and described strong instantaneous power can be damaged fingerprint sensor, in the time of seriously even cause fingerprint sensor to scrap.
In order to address the above problem, the utility model provides a kind of fingerprint recognition system.With reference to figure 2, show the synoptic diagram of the utility model fingerprint recognition system one embodiment.The utility model fingerprint recognition system comprises: insulated substrate 201; Be positioned at fingerprint sensor 202 and driving circuit 203 on the described insulated substrate 201; Be covered in the film 204 on the described fingerprint sensor 202, described film 204 comprises conductive film and the insulation film that is positioned on the conductive film; The shell 207 that contains described insulated substrate 201, fingerprint sensor 202, driving circuit 203 and film 204, described shell 207 comprises an opening 2071, described opening 2071 exposes described film 204.
Wherein, described insulated substrate 201 is used for supporting and the fixing electron device of fingerprint recognition system.
Described fingerprint sensor 202 is used to survey finger print information, and finger print information is converted into electric signal.
Described driving circuit 203 is electrically connected with described fingerprint sensor 202, be used to control fingerprint sensor 202 and handle the electric signal that fingerprint sensor 202 detects, described driving circuit 203 comprises a plurality of electronic components, the one or more pins (pin) of end 206 that are provided with in the described electronic component with being connected in.
Described film 204 can be transferred to fingerprint pattern on the fingerprint sensor.Wherein, insulation film is used to provide the surface of contact that carries out fingerprint recognition, user's finger presses is to the insulation film of described film 204, insulation film passes to conductive film with the pattern of user's finger, described conductive film contacts with fingerprint sensor 202, makes fingerprint sensor 202 begin to carry out fingerprint recognition.
Described shell 207; be used to hold the internal components of fingerprint recognition system; be used to protect fingerprint sensor 202 and driving circuit 203 thereof; can make line sensor 202 and driving circuit 203 thereof avoid being subjected to mechanical collision; particularly; described shell 207 is a metal shell, all right masked segment spurious signal of metal shell, and metal shell holds 206 with being connected in usually.
Also be provided with conductive component 205 on the upper surface of insulation film in the described film 204, described conductive component 205 is arranged on the surface of contact, and particularly, described conductive component 205 is exposed by the opening 2071 of shell 207.In the present embodiment, described conductive component 205 is a bus, and described bus is along vertically the arranging of opening, and the length of described bus is identical with the width of film 204.
The edge of the shell 207 of described opening 2071 positions is by being pressed on the described bus, realized contacting of bus and shell 207, and therefore, described conductive component 205 holds 206 by shell 207 with being connected in.
When user's finger presses was to described film 204, finger can touch conductive component 205, and the static that carries on the finger holds 206 via conductive component 205 with being transferred to, thereby had avoided causing destruction to fingerprint recognition system because of static discharge.
Need to prove that in the present embodiment, the material of described bus is one or more in the conducting metals such as gold, platinum, silver, tin, but the utility model is not restricted to this.
Described opening is of a size of 20mm * 20mm, the length of described bus is 20mm, width is in the scope of 1～3mm, the material of described bus is a gold, the thickness of described bus is in nanometer scale, the material of described bus is a silver, and the thickness of described bus is in micron dimension, and those skilled in the art can select suitable thickness according to the different electric conductivity of material.
In the manufacture process of fingerprint recognition system, after forming the step of film 204, film 204 correspondingly position (with the corresponding position of surface of contact) form conductive component 205.
Particularly, described conductive component 205 is a conducting metal, can form described conducting metal by the mode of sputter (sputtering).
The described embodiment of Fig. 2 is a preferred embodiment, but the utility model can also have other distortion, below in conjunction with other specific embodiments, the technical solution of the utility model is described in detail.
With reference to figure 3, show the synoptic diagram of another embodiment of fingerprint recognition system shown in Figure 2, in order to simplify accompanying drawing, only show the opening 3071 of film 304, conductive component 305 and shell.
In the present embodiment, described conductive component 305 also is a bus, the difference of described fingerprint recognition system and fingerprint recognition system shown in Figure 2 is, bus is laterally arranged along opening 3071, and run through described opening 3071, ground, opening 3071 positions shell edge is by being pressed on the bus, and therefore, described bus is held via shell with being connected in.
Present embodiment is different with the arragement direction of bus embodiment illustrated in fig. 2.Among the described embodiment of Fig. 2, the length of bus is identical with the width of film, is more convenient for making.
Need to prove that in other embodiment of the present utility model, the arragement direction of described bus can also adopt other modes, for example described bus is arranged along the diagonal of opening, and runs through described opening.
With reference to figure 4, show the synoptic diagram of another embodiment of fingerprint recognition system shown in Figure 2, in order to simplify accompanying drawing, only show the opening 4071 of film 404, conductive component 405 and shell.
In the present embodiment, described conductive component 405 also is a bus, the difference of described fingerprint recognition system and fingerprint recognition system shown in Figure 2 is, described bus does not run through described opening 4071, described bus is arranged along the diagonal of opening 4071, one end of bus is pushed by shell, and the other end then is arranged on the film 404 of opening 4071 center positions (surface of contact position just).
Compare with fingerprint recognition system shown in Figure 2, the present embodiment bus has only an end to be pushed by shell, embodiment illustrated in fig. 2 in, bus electrically contacts better with shell.
Need to prove that in the above-described embodiments, be set to one in order to save the described bus of material, but the utility model is not restricted to this, in other embodiments, described conductive component can also comprise the bus of one or more.
Need to prove, in the above-described embodiments, be bus for the ease of making described conductive component, but the utility model is not restricted to this, described conductive component can also be a conduction disk etc.
In the above-described embodiments,, push the ground connection that conductive component has been realized conductive component by shell for the ease of realizing, in other embodiments, the pin that can also conductive component be connected in ground connection in the driving circuit by lead, thereby the ground connection of realizing conductive component.
Need to prove that the technical program does not limit the manufacturing process of fingerprint sensor in the fingerprint recognition system, described fingerprint sensor can form by the manufacturing process of traditional silicon base, low temperature polycrystalline silicon or amorphous silicon.In addition, the technical program does not limit the size and the shape of fingerprint sensor yet, and described fingerprint sensor can be the fingerprint sensor of line style or face type.
Need to prove that also the foregoing description is to be example with the pressure resistance type fingerprint recognition system, the technical program can also be used for the fingerprint recognition system of other type, for example capacitance type fingerprint recognition system, piezoelectric type fingerprint recognition system etc.
In sum, technique scheme is provided with the conductive component that is positioned on the surface of contact in fingerprint recognition system, described conductive component is held with being connected in, when the user carries out fingerprint recognition, the electrostatic charge that finger carries is held by described conductive component with being transmitted in, thereby avoid producing strong immediate current, and then avoided static discharge that fingerprint recognition system is damaged, improved reliability of products.
Should be appreciated that example herein and embodiment only are exemplary, those skilled in the art can make various modifications and corrigendum under the situation of the spirit and scope of the present utility model that do not deviate from the application and claims and limited.
Claims (10)
1. a fingerprint recognition system is characterized in that, described fingerprint recognition system comprises:
Insulated substrate;
Be positioned at fingerprint sensor and driving circuit on the described insulated substrate, described fingerprint sensor is used to survey finger print information, and described driving circuit is electrically connected with described fingerprint sensor, is used to control fingerprint sensor and handle the finger print information that fingerprint sensor detects;
Be covered in the film on the described fingerprint sensor, described film is used to provide the surface of contact of fingerprint recognition;
Be positioned at the conductive component on the surface of contact, described conductive component is held with being connected in.
2. fingerprint recognition system according to claim 1 is characterized in that, also comprises the shell of end with being connected in, and described shell comprises the opening that exposes described surface of contact, and described conductive component is connected in described shell.
3. fingerprint recognition system as claimed in claim 2 is characterized in that shell is positioned on the described conductive component, and contacts with described conductive component.
4. fingerprint recognition system as claimed in claim 3 is characterized in that, described conductive component is a bus.
5. fingerprint recognition system as claimed in claim 3 is characterized in that, described conductive component is the conduction disk.
6. fingerprint recognition system as claimed in claim 4 is characterized in that, described bus is arranged along horizontal, the vertical or diagonal of opening.
7. fingerprint recognition system as claimed in claim 4 is characterized in that the two ends of described bus all contact with shell.
8. fingerprint recognition system as claimed in claim 7 is characterized in that described bus runs through described opening.
9. fingerprint recognition system as claimed in claim 4 is characterized in that, an end of described bus contacts with shell, and the other end is arranged on the surface of contact.
10. fingerprint recognition system according to claim 1 is characterized in that described driving circuit comprises a plurality of electronic components, the one or more pins of end that are provided with in the described electronic component with being connected in, and described conductive component is connected in described pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201552928U CN202058175U (en) | 2011-05-16 | 2011-05-16 | Fingerprint identification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201552928U CN202058175U (en) | 2011-05-16 | 2011-05-16 | Fingerprint identification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058175U true CN202058175U (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201552928U Expired - Fee Related CN202058175U (en) | 2011-05-16 | 2011-05-16 | Fingerprint identification system |
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| CN (1) | CN202058175U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103942538A (en) * | 2014-04-04 | 2014-07-23 | 南昌欧菲生物识别技术有限公司 | Fingerprint recognition sensor encapsulation structure |
| CN104217198A (en) * | 2014-08-26 | 2014-12-17 | 南昌欧菲生物识别技术有限公司 | Fingerprint identifying device and terminal apparatus |
| WO2017084003A1 (en) * | 2015-11-16 | 2017-05-26 | Shanghai Oxi Technology Co., Ltd | Fingerprint system and mobile phone |
| CN109839990A (en) * | 2017-11-29 | 2019-06-04 | 南昌欧菲生物识别技术有限公司 | Handheld terminal and its shell, panel |
-
2011
- 2011-05-16 CN CN2011201552928U patent/CN202058175U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103942538A (en) * | 2014-04-04 | 2014-07-23 | 南昌欧菲生物识别技术有限公司 | Fingerprint recognition sensor encapsulation structure |
| CN103942538B (en) * | 2014-04-04 | 2017-06-06 | 南昌欧菲生物识别技术有限公司 | Fingerprint Identification sensor encapsulating structure |
| CN104217198A (en) * | 2014-08-26 | 2014-12-17 | 南昌欧菲生物识别技术有限公司 | Fingerprint identifying device and terminal apparatus |
| WO2017084003A1 (en) * | 2015-11-16 | 2017-05-26 | Shanghai Oxi Technology Co., Ltd | Fingerprint system and mobile phone |
| CN109839990A (en) * | 2017-11-29 | 2019-06-04 | 南昌欧菲生物识别技术有限公司 | Handheld terminal and its shell, panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20180516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |