CN204926117U - Fingerprint identification module and terminal equipment - Google Patents
Fingerprint identification module and terminal equipment Download PDFInfo
- Publication number
- CN204926117U CN204926117U CN201520492592.3U CN201520492592U CN204926117U CN 204926117 U CN204926117 U CN 204926117U CN 201520492592 U CN201520492592 U CN 201520492592U CN 204926117 U CN204926117 U CN 204926117U
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- fingerprint
- connecting portion
- flexible pcb
- recognition module
- chip
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Abstract
The utility model provides a fingerprint identification module, including first flexible circuit board, second flexible circuit board and fingerprint chip, fingerprint chip includes main part, kink and first connecting portion, first connecting portion with the main part is passed through the kink is connected, the main part is installed on the first flexible circuit board, form accommodating space between first connecting portion and first flexible circuit board, the second flexible circuit board includes the second connecting portion, the second connecting portion are fixed on the first flexible circuit board and accept in accommodating space, first connecting portion pass through conducting resin electric connection with the second connecting portion. Will fingerprint chip falls into a plurality of parts, through first connecting portion with second flexible circuit board overlap joint can effectively reduce the whole high of fingerprint identification module.
Description
Technical field
The utility model relates to field of biological recognition, particularly relates to a kind of fingerprint recognition module and terminal device.
Background technology
In recent years, along with the development of memory technology, terminal device stores the capsule information such as a large amount of personal information as smart mobile phone, panel computer etc., and its security becomes even more important.
Fingerprint is made up of the rough lines of finger surface skin, is the unique feature of human body, and its complexity can be provided for the enough features identifying user identity.Namely fingerprint recognition is utilize the feature of fingerprint uniqueness and stability to realize identification, and remembers without the need to user.
But, along with fingerprint identification technology is used widely, encounter some problems, the deviser of electronic equipment or slip-stick artist constantly pursue electronic equipment maximally integrated and ease for use on the one hand, reduce the size of the integrated package in electronic equipment again on the other hand and reduce its cost, therefore with height etc., requirements at the higher level being proposed to the size of fingerprint recognition module.
Utility model content
The purpose of this utility model is the fingerprint recognition module providing a kind of compact conformation, overall dimensions less.
Another object of the present utility model is to provide a kind of terminal device using above-mentioned fingerprint recognition module.
To achieve these goals, the utility model embodiment provides following technical scheme:
The utility model provides a kind of fingerprint recognition module, it is characterized in that, comprise the first flexible PCB, the second flexible PCB and fingerprint chip, described fingerprint chip comprises main body and the first connecting portion, described main body is arranged on described first flexible PCB, described main body and described first flexible PCB are electrical connected, and described second flexible PCB comprises the second connecting portion, and described first connecting portion and described second connecting portion are electrically connected by conducting resinl.
Wherein, described fingerprint chip also comprises kink, and described kink connects described main body and described first connecting portion, forms receiving space between described first connecting portion and described first flexible PCB, and described second connecting portion is contained in described receiving space.
Wherein, being parallel to each other of the plane at described first connecting portion place and the plane at described main body place.
Wherein, described first flexible PCB covers the openend of the groove of described cover plate completely.
Wherein, described conducting resinl is anisotropic conductive.
Wherein, the thickness of described conducting resinl is 1 micron ~ 100 microns.
Wherein, described fingerprint chip is electrically connected on described first flexible PCB in a flip-chip manner.
Wherein, one end of described main body is provided with depression, and described first connecting portion is in described recess.
Wherein, also comprise the reeded cover plate of band and fingerprint detection element, described cover plate establishes reeded bottom surface to be arranged on described first flexible PCB, described fingerprint detection element and described fingerprint chip laminate arrange and are electrical connected, and described fingerprint detection element and described fingerprint chip are contained in the groove of cover plate.
The utility model additionally provides a kind of terminal device, comprises the fingerprint recognition module described in above-mentioned any one.The utility model embodiment tool has the following advantages or beneficial effect:
The utility model adopts and fingerprint chip is divided into main body, kink and the first connecting portion, overlapped by the first connecting portion and the second flexible PCB, thus reduce fingerprint recognition module height on the whole, reach and reduce fingerprint recognition module occupied terminal space, make terminal device can the technique effect of miniaturization further.
Accompanying drawing explanation
Fig. 1 is the fingerprint recognition modular structure schematic diagram of the utility model first embodiment;
Fig. 2 is the fingerprint recognition module A-A diagrammatic cross-section shown in Fig. 1;
Fig. 3 is the fingerprint recognition modular structure schematic diagram of the utility model second embodiment;
Fig. 4 is the fingerprint recognition modular structure schematic diagram of the utility model the 3rd embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In the screen that disclosed in the utility model, fingerprint recognition module can be integrated in terminal device or shell, and be positioned on the screen of terminal device or the top surface of shell, in certain embodiments, an one chip can be provided to control at least one of them the function of display screen, touch-screen and fingerprint recognition module.In addition, the top surface comprising the terminal device of fingerprint sensor in the utility model is smooth or roughly smooth.Display screen and fingerprint recognition module are configured to integrate and have identical mode of operation, or are configured to the single component that terminal device comprises.
Refer to Fig. 1, Fig. 2, fingerprint recognition module of the present utility model comprises the first flexible PCB 1 in the present embodiment, second flexible PCB 2 and fingerprint chip 3, described fingerprint chip 3 comprises main body 31, kink 32 and the first connecting portion 33, described first connecting portion 33 is connected by described kink 32 with described main body 31, described first flexible PCB 1 is electrical connected with described fingerprint chip 3, described main body 31 is arranged on described first flexible PCB 1, make described first to connect between 33 and the first flexible PCB 1 and form a receiving space B, described second flexible PCB 2 comprises second connecting portion 22, described second connecting portion 22 to be fixed on described first flexible PCB 1 and to be contained in described receiving space B, first flexible PCB 1 and the second flexible PCB 2 are electrically connected, described first connecting portion 33 and the second connecting portion 22 are electrically connected by conducting resinl 4.
Further, described main body 31, kink 32 and the first connecting portion 33 roughly form a S shape, in one embodiment, and being parallel to each other of the described plane at the first connecting portion 33 place and the plane at described main body 31 place.
Described fingerprint chip 3 is divided into three sections by the present embodiment, comprise main body 31, kink 32 and the first connecting portion 33, overlapped with described second flexible PCB 2 by the first connecting portion 33 on described fingerprint chip 3, main part is still fixed on described first flexible PCB 1, the whole height of fingerprint recognition module can be effectively reduced, thus reduce the size of fingerprint recognition module.
Refer to Fig. 3, in the second embodiment, one end of described fingerprint chip 3 is provided with depression C, described first connecting portion 33 is located on described depression C, described main body 31 is electrically connected at described first flexible PCB 1, and described second connecting portion 22 is electrically connected at the first connecting portion 33 on described depression C by conducting resinl.
In the present embodiment, one end of fingerprint chip arranges depression C, first connecting portion 33 is located on depression C, and by conducting resinl, described second connecting portion 22 is fixed in depression C, thus avoid the situation being connected the fingerprint recognition module thickness that causes because fingerprint chip 3 and described second flexible PCB 2 are stacked and increasing, thus reduce the size of fingerprint recognition module.
Preferred, conducting resinl 4 can be the anisotropic conductive (AnisotropConductiveFilm with anisotropic conductive capability, ACF), anisotropic conductive easily connects fine pitch circuit and terminal, facilitate the connection between adjacent micro chip, anisotropic conductive also has can the characteristic of the extremely low material unaccounted-for (MUF) of Continuous maching (Tape-on-Reel).Generally, conducting resinl 4 needs to possess certain thickness, general thickness, at 1 micron ~ 100 microns, crimps after described first connecting portion 33 is connected by ACF with the second connecting portion 22 again, to be electrically connected described fingerprint chip 3 and the second flexible PCB 2.
Further, described first flexible PCB 1 and the second flexible PCB 2 can be Kapton (Polyimidefilm, PIfilm), but not as limit, fingerprint chip 3 can pass through flip-chip (flipchip) technology and described first flexible PCB 1 is electrically connected.By the face down of fingerprint chip 3 towards flexible PCB 2, without the need to wire bonding, adopt the Metal Ball (such as tin ball) of some, make fingerprint chip 3 on electrically and be mechanically connected to described first flexible PCB 1.Adopt flip chip technology (fct), because it is without the need to wire bonding, can the shortest circuit be formed, reduce resistance; In addition, by adopting Metal Ball to connect, reducing package dimension, improving electrical performance.
Refer to Fig. 4, in the utility model the 3rd embodiment, described fingerprint recognition module also comprises cover plate 6 and fingerprint detection element 5, and described cover plate 6 comprises a groove D, and described cover plate 6 has end face 61 and the bottom surface 62 corresponding with end face.Described bottom surface 62 is arranged on described first flexible PCB 1, and bottom surface 62 is provided with an openend.Fingerprint detection element 5 and fingerprint chip 3 are all placed in groove D, and described first flexible PCB covers the openend of the groove D of described cover plate completely.Fingerprint detection element 5 and fingerprint chip 3 are electrically connected, such as, can be electrically connected by lead-in wire, tin ball or other modes.Fingerprint detection element 5 and fingerprint chip 3 are positioned at the groove D of cover plate 6.Fingerprint detection element 5 is positioned at the side of the bottom away from groove D, fingerprint chip 3 is positioned at the side of the bottom away from groove D of fingerprint detection element 5, therefore, because fingerprint detection element 5 is placed in the groove D of cover plate 6, fingerprint detection element 5 is closer to the touch-surface of cover plate 6, reduce the distance between user's finger and fingerprint detection element 5, be conducive to the final imaging effect of the fingerprint improving user.
Fingerprint detection element 5 can detect by push type, the mode such as the formula of drawing or active condenser type of wiping the fingerprint operated on cover plate 6.
By the electric connection of fingerprint detection element 5 with fingerprint chip 3, the data detected are transferred to fingerprint chip 3 to process by fingerprint detection element 5.Specifically, fingerprint detection element 5 detects that the capacitance signal change that fingerprint ridge and fingerprint paddy produce is passed to fingerprint chip 3.The capacitance signal that fingerprint chip 3 is detected by fingerprint detection element 5 changes to provide fingerprint image.Further, the fingerprint image of acquisition is the gray level image that a width contains more noise.Therefore, also need to carry out pre-service to improve the quality of fingerprint image to this fingerprint image, strengthen the contrast of fingerprint ridge and fingerprint paddy, it is become width point and line chart clearly, so that carry out feature extraction.The pre-service of fingerprint image includes normalization, Iamge Segmentation, enhancing, binaryzation and refinement, does not repeat them here.
First flexible PCB 1, by the electric connection with fingerprint chip 3, to obtain the fingerprint that fingerprint chip 3 identifies, and operates according to the fingerprint obtained accordingly.Fingerprint chip 3 can pass through flip-chip (flipchip) technology and described first flexible PCB 1 is electrically connected.By the face down of fingerprint chip 3 towards the first flexible PCB 1, without the need to wire bonding, adopt the Metal Ball (such as tin ball) of some, make fingerprint chip 3 on electrically and be mechanically connected to described first flexible PCB 1.Adopt flip chip technology (fct), because it is without the need to wire bonding, can the shortest circuit be formed, reduce resistance; In addition, by adopting Metal Ball to connect, reducing package dimension, improving electrical performance.
Further, described cover plate can be ceramic cover plate, tempered glass cover plate, tempered glass cover plate, polycarbonate cover plate or sapphire cover plate.
In one embodiment, the first flexible PCB 1 can be electrically connected by multiple tin ball and fingerprint chip 3.In another alternate embodiment, the first flexible PCB 1 can be electrically connected by lead-in wire and fingerprint detection element 5 or fingerprint chip 3.
In other embodiments, described fingerprint chip 3 can also be welded to described first flexible PCB 1 by the form of pin, or is connected to described first flexible PCB 1 by ACF.
Terminal device is configured to comprise usually: display screen, touch-screen, cover-plate glass, storage, SOC (system on a chip) (systemonchip), CPU, GPU, internal memory, Wi-Fi connection, bluetooth connection, USB connection, battery, external power supply, computer-readable media and software etc.
Fingerprint recognition module of the present utility model such as can be applicable to the mobile terminal such as smart mobile phone, panel computer, also can be applicable to the terminal device of bank as ATM etc., but the utility model is not as limit.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The amendment done within any spirit at above-mentioned embodiment and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in this technical scheme.
Claims (10)
1. a fingerprint recognition module, it is characterized in that, comprise the first flexible PCB, the second flexible PCB and fingerprint chip, described fingerprint chip comprises main body and the first connecting portion, described main body is arranged on described first flexible PCB, described main body and described first flexible PCB are electrical connected, and described second flexible PCB comprises the second connecting portion, and described first connecting portion and described second connecting portion are electrically connected by conducting resinl.
2. fingerprint recognition module as claimed in claim 1, it is characterized in that, described fingerprint chip also comprises kink, described kink connects described main body and described first connecting portion, form receiving space between described first connecting portion and described first flexible PCB, described second connecting portion is contained in described receiving space.
3. fingerprint recognition module as claimed in claim 2, is characterized in that, being parallel to each other of the plane at described first connecting portion place and the plane at described main body place.
4. fingerprint recognition module as claimed in claim 1, it is characterized in that, one end of described main body is provided with depression, and described first connecting portion is in described recess.
5. fingerprint recognition module as claimed in claim 1, it is characterized in that, described conducting resinl is anisotropic conductive.
6. fingerprint recognition module as claimed in claim 5, it is characterized in that, the thickness of described conducting resinl is 1 micron ~ 100 microns.
7. fingerprint recognition module as claimed in claim 6, it is characterized in that, described fingerprint chip is electrically connected on described first flexible PCB in a flip-chip manner.
8. fingerprint recognition module as claimed in claim 1, it is characterized in that, also comprise the reeded cover plate of band and fingerprint detection element, described cover plate establishes reeded bottom surface to be arranged on described first flexible PCB, described fingerprint detection element and described fingerprint chip laminate arrange and are electrical connected, and described fingerprint detection element and described fingerprint chip are contained in the groove of cover plate.
9. fingerprint recognition module as claimed in claim 8, it is characterized in that, described first flexible PCB covers the openend of the groove of described cover plate completely.
10. a terminal device, is characterized in that, comprises the fingerprint recognition module described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492592.3U CN204926117U (en) | 2015-07-09 | 2015-07-09 | Fingerprint identification module and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492592.3U CN204926117U (en) | 2015-07-09 | 2015-07-09 | Fingerprint identification module and terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204926117U true CN204926117U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520492592.3U Expired - Fee Related CN204926117U (en) | 2015-07-09 | 2015-07-09 | Fingerprint identification module and terminal equipment |
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| Country | Link |
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| CN (1) | CN204926117U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105095861A (en) * | 2015-07-09 | 2015-11-25 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification apparatus and terminal equipment |
| CN106024752A (en) * | 2016-06-22 | 2016-10-12 | 深圳市森邦半导体有限公司 | PLCC (plastic leaded chip carrier) module |
| CN106897712A (en) * | 2017-03-13 | 2017-06-27 | 广东欧珀移动通信有限公司 | Fingerprint module, display screen and mobile terminal |
| WO2019052332A1 (en) * | 2017-09-14 | 2019-03-21 | 维沃移动通信有限公司 | Display screen assembly and mobile terminal |
-
2015
- 2015-07-09 CN CN201520492592.3U patent/CN204926117U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105095861A (en) * | 2015-07-09 | 2015-11-25 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification apparatus and terminal equipment |
| CN105095861B (en) * | 2015-07-09 | 2019-03-26 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device and terminal device |
| CN106024752A (en) * | 2016-06-22 | 2016-10-12 | 深圳市森邦半导体有限公司 | PLCC (plastic leaded chip carrier) module |
| CN106897712A (en) * | 2017-03-13 | 2017-06-27 | 广东欧珀移动通信有限公司 | Fingerprint module, display screen and mobile terminal |
| WO2019052332A1 (en) * | 2017-09-14 | 2019-03-21 | 维沃移动通信有限公司 | Display screen assembly and mobile terminal |
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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: 20151230 Termination date: 20200709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |