CN207249681U - A kind of attached structure of flexible printed circuit board and fingerprint Identification sensor - Google Patents
A kind of attached structure of flexible printed circuit board and fingerprint Identification sensor Download PDFInfo
- Publication number
- CN207249681U CN207249681U CN201720778396.1U CN201720778396U CN207249681U CN 207249681 U CN207249681 U CN 207249681U CN 201720778396 U CN201720778396 U CN 201720778396U CN 207249681 U CN207249681 U CN 207249681U
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- China
- Prior art keywords
- circuit board
- printed circuit
- anisotropic conductive
- flexible printed
- fingerprint identification
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Abstract
The utility model discloses a kind of flexible printed circuit board and the attached structure of fingerprint Identification sensor, it includes flexible printed circuit board, the fingerprint Identification sensor positioned at flexible printed circuit board upper end side, anisotropic conductive film, adhesive film are provided between flexible printed circuit board and fingerprint Identification sensor, the centre position of adhesive film offer shape be adapted with anisotropic conductive film shape and up and down completely through hollow bulb, anisotropic conductive film is embedded in the hollow bulb of adhesive film and adhesive film extends along the edge of anisotropic conductive film；The upper surface of anisotropic conductive film, the upper surface of adhesive film are bonded with the lower surface of fingerprint Identification sensor respectively, and the lower surface of anisotropic conductive film, the lower surface of adhesive film are bonded with the upper surface of flexible printed circuit board respectively.By said structure design, the attached structure of the utility model has the advantages that novel in design, reliability is good, cohesive force is strong and long-time service stability is good.
Description
Technical field
It the utility model is related to fingerprint Identification sensor technical field, more particularly to a kind of flexible printed circuit board and fingerprint
The attached structure of identification sensor.
Background technology
Fingerprint identification technology is the technology that can prevent various security accidents by user's registration and authentication procedure；It is more detailed
Carefully, suitable for the fields such as personal and tissue network protection, the protection of various contents and data and the access control of safety.
Recently, the user of the various portable units such as smart mobile phone and tablet computer increases sharply, and consequently also continually uses
The undesirable accident in family, i.e., the personal information and content stored on a portable device is to external leakage.
Home key on mobile device is most of all to further include fingerprint recognition work(in addition to just having home key function
Energy；In the case, fingerprint Identification sensor is equiped with home key, which is attached at flexible printing before this
On circuit board, after then carrying out epoxy molding material encapsulation, used.
Fig. 1 is the schematic diagram being in the prior art attached at fingerprint Identification sensor on flexible printed circuit board；With reference to Fig. 1
Understand, the method being attached at fingerprint Identification sensor on flexible printed circuit board in the prior art is：Formed with multiple electricity
When fingerprint Identification sensor 20 is attached on the flexible printed circuit board 10 on road, in fingerprint Identification sensor 20 and flexible print circuit
Anisotropic conductive film 15 is used between plate 10（ACF）Or anisotropy conductive adhesive（ACA）.In the bonding with insulating properties
Among property organic material, conducting particles plays the role of conducting function, and anisotropy conductive adhesive（ACA）Or anisotropy is led
Electric glued membrane（ACF）It is to carry out the conducting particles dispersed and by the macromolecule gluing material of its commercialization, it is provided simultaneously with two
Kind function, i.e., it is conductive towards the direction of adhesive layer thickness, and then there is insulating properties towards the direction in face.It need to not understand only
Release, anisotropy refers to：One direction is conduction, and other direction is the state of insulation, i.e., electric current only flows facing one direction
The meaning, the content of its conducting particles is considerably less, therefore does not occur directly to contact between particle.Due to this different side of ACA/ACF
Property, when carrying out bonding process, entire area can disposably be carried out to operation, therefore its process efficiency is very high, has
The advantages of contact of ultra-fine spacing of discontented 0.04mm can be tackled.
Although ACA/ACF has the advantages that above-mentioned, because its cohesive force is not strong, after after a while, exist because of it
The problem of power is reduced and come off is attached, either because conducting particles fails to connect with fingerprint Identification sensor or flexible printed circuit board
Touch and the problem of bad occur.
Utility model content
The purpose of this utility model is that provide a kind of flexible printed circuit board and fingerprint in view of the deficiencies of the prior art
The attached structure of the attached structure of identification sensor, the flexible printed circuit board and fingerprint Identification sensor is novel in design, stablizes
Good reliability, cohesive force are strong and long-time service stability is good.
To reach above-mentioned purpose, the utility model is achieved through the following technical solutions.
A kind of attached structure of flexible printed circuit board and fingerprint Identification sensor, includes flexible printed circuit board, position
In the fingerprint Identification sensor of flexible printed circuit board upper end side, set between flexible printed circuit board and fingerprint Identification sensor
There are anisotropic conductive film, adhesive film, the centre position of adhesive film offers shape and is adapted with anisotropic conductive film shape
And up and down completely through hollow bulb, anisotropic conductive film is embedded in the hollow bulb of adhesive film and adhesive film is along anisotropy
The edge extension of conductive adhesive film；
Glue the lower surface of the upper surface of anisotropic conductive film, the upper surface of adhesive film respectively with fingerprint Identification sensor
Knot, the lower surface of anisotropic conductive film, the lower surface of adhesive film are bonded with the upper surface of flexible printed circuit board respectively.
Wherein, the adhesive film is DAF bonding die films, OCA films, OCR films or adhesive.
The beneficial effects of the utility model are：A kind of flexible printed circuit board described in the utility model is passed with fingerprint recognition
The attached structure of sensor, it includes flexible printed circuit board, the fingerprint recognition positioned at flexible printed circuit board upper end side senses
Device, is provided with anisotropic conductive film, adhesive film, the centre of adhesive film between flexible printed circuit board and fingerprint Identification sensor
Position offer shape be adapted with anisotropic conductive film shape and up and down completely through hollow bulb, anisotropic conductive film
It is embedded in the hollow bulb of adhesive film and adhesive film extends along the edge of anisotropic conductive film；Anisotropic conductive film it is upper
The lower surface of surface, the upper surface of adhesive film respectively with fingerprint Identification sensor bonds, and the lower surface of anisotropic conductive film, glue
The lower surface of conjunctiva is bonded with the upper surface of flexible printed circuit board respectively.Pass through said structure design, the patch of the utility model
Attached structure has the advantages that novel in design, reliability is good, cohesive force is strong and long-time service stability is good.
Brief description of the drawings
The utility model is further detailed below with attached drawing, but the embodiment in attached drawing is not formed pair
Any restrictions of the utility model.
Fig. 1 is the schematic diagram being in the prior art attached at fingerprint Identification sensor on flexible printed circuit board.
Fig. 2 be the utility model flexible printed circuit board and fingerprint Identification sensor attached structure exploded pictorial
Figure.
Fig. 3 is the flexible printed circuit board of the utility model and the attaching process schematic of fingerprint Identification sensor.
Fig. 4 is the schematic diagram that release paper is attached on the adhesive film and anisotropic conductive film of fitting.
Fig. 5 is the fingerprint Identification sensor and another attaching process schematic of flexible printed circuit board of the utility model.
Fig. 6 is the fingerprint Identification sensor and the another attaching process schematic of flexible printed circuit board of the utility model.
Include in Fig. 1 into Fig. 6：
10 --- flexible printed circuit board 15 --- anisotropic conductive films
20 --- fingerprint Identification sensor
100 --- flexible printed circuit board 110 --- adhesive films
150 --- anisotropic conductive film 200 --- fingerprint Identification sensors
300 --- upper strata release paper 310 --- lower floor's release papers.
Embodiment
The utility model is illustrated with reference to specific embodiment.
As shown in Figures 2 to 6, a kind of attached structure of flexible printed circuit board and fingerprint Identification sensor, includes soft
Property printed circuit board (PCB) 100, the fingerprint Identification sensor 200 positioned at 100 upper end side of flexible printed circuit board, flexible printed circuit board
Anisotropic conductive film 150, adhesive film 110, the interposition of adhesive film 110 are provided between 100 and fingerprint Identification sensor 200
Put offer shape be adapted with anisotropic conductive film shape and up and down completely through hollow bulb, anisotropic conductive film
150 are embedded in the hollow bulb of adhesive film 110 and adhesive film 110 extends along the edge of anisotropic conductive film 150.
Further, the upper surface of anisotropic conductive film 150, the upper surface of adhesive film 110 are passed with fingerprint recognition respectively
The lower surface of sensor 200 bonds, the lower surface of anisotropic conductive film 150, the lower surface of adhesive film 110 respectively with flexible printing
The upper surface of circuit board 100 bonds.
As shown in Fig. 2, the composition of the utility model is：Anisotropic conductive film 150 is inserted into and is located at adhesive film 110
Between flexible printed circuit board 100 and fingerprint Identification sensor 200.At this time, key is：Anisotropic conductive film 150 is with gluing
Conjunctiva 110 must not be overlapped, this is because, it is different if adhesive film 110 and anisotropic conductive film 150 are overlapped
The function of the conducting particles of side's property conductive adhesive film 150 will reduce or can not play its function, this will improve defective work
Possibility occurrence.Therefore, as shown in Fig. 2, the centre position of adhesive film 110 opens up hollow bulb, and anisotropic conductive film 150
Then in the hollow bulb of adhesive film 110.
Wherein, DAF bonding die films are preferably used in the adhesive film of the utility model, and the attaching dynamics of DAF bonding die films is than different side
Property conductive adhesive film 150 attaching dynamics it is stronger, therefore can avoid anisotropic conductive film 150 from flexible printed circuit board 100 with
Come off between fingerprint Identification sensor 200.
The attaching method of the utility model is briefly described with reference to Fig. 3, passes through anisotropic conductive film 150
The attaching process of fingerprint Identification sensor 200 and flexible printed circuit board 100 is bonded with adhesive film 110：
Such as Fig. 3（a）Shown, anisotropic conductive film 150 is located at fingerprint Identification sensor 200 and flexibility with adhesive film 110
Between printed circuit board (PCB) 100, and the hollow bulb of adhesive film 110 is configured with anisotropic conductive film 150；
Such as Fig. 3（b）It is shown, stacking adhesive film 110 and the upper strata of the film of anisotropic conductive film 150 are attached at first
The lower floor of fingerprint Identification sensor 200, in the steps afterwards, flexible printed circuit board is attached at by the lower floor of the film of stacking
100 upper strata, to attach fingerprint Identification sensor 200 and flexible printed circuit board 100.
In addition, with reference to Fig. 3（c）Illustrate another method：First, by stacking adhesive film 110 and anisotropic conductive film 150
The lower floor of film be attached at the upper strata of flexible printed circuit board 100, in the steps afterwards, the upper strata of the film of stacking is pasted
The lower floor of fingerprint Identification sensor 200 is invested, to attach fingerprint Identification sensor 200 and flexible printed circuit board 100.
It should further be noted that the technique illustrated by above-mentioned Fig. 3, can send out according to operating environment or product performance
Change more.Flexible printed circuit board 100 and fingerprint Identification sensor 200, and adhesive film 110 are tightly combined by the above process
Configuration is not overlapped the to each other with anisotropic conductive film 150, by this, anisotropic conductive film 150 makes flexible print circuit
While plate 100 is powered with fingerprint Identification sensor 200, moreover it is possible to water-proof function is played, and imparts attaching power, can be just with this
Really fulfil the function of anisotropic conductive film 150.
As shown in figure 4, attach toughness in stacking adhesive film 110 and the levels of the film of anisotropic conductive film 150
Handle paper（300、310）, the film of stacking is configured to：Adhesive film 110 is not overlapped the to each other with anisotropic conductive film 150 matches somebody with somebody
Put, and be pasted with upper strata release paper 300 and lower floor's release paper 310, adhesive film can be protected by means of release paper
110 with the surface of anisotropic conductive film 150, while mutual position can be properly aligned with.
Illustrate to attach flexible printed circuit board 100 and fingerprint recognition using the film of stacking referring to Fig. 5 and Fig. 6
The attaching process of sensor 200：
First, illustrate one embodiment with reference to Fig. 5, adhesive film 110 and anisotropic conductive film 150 are configured to mutually
It is not overlapping, and configure and be pasted with the stacking of upper strata release paper 300 and lower floor's release paper 310 on upper strata and lower floor
Film（Fig. 5 a）；Then, upper strata release paper 300 is opened from the film of stacking（Fig. 5 b）And then open upper strata viscosity
The upper strata of the adhesive film 110 for handling paper and appearing and the anisotropic conductive film 150 attaches fingerprint Identification sensor 200
（Fig. 5 c）；Open lower floor's release paper 310（Fig. 5 d）Afterwards, in the adhesive film opened lower floor's release paper 310 and appeared
110 attach flexible printed circuit board 100 with the lower floor of anisotropic conductive film 150（Fig. 5 e）；By the above process, bonding is utilized
Film 110 and anisotropic conductive film 150, attach flexible printed circuit board 100 and fingerprint Identification sensor 200.So attaching
In the state of, if the upper strata progress hot pressing to fingerprint Identification sensor 200, the resin of anisotropic conductive film 150 is with gluing
The resin of conjunctiva 110 can melt, this will be disturbed conducting particles and can be attached at fingerprint Identification sensor 200 and flexible print
While printed circuit board 100, it is powered by conducting particles flexible printed circuit board 100 and fingerprint Identification sensor 200；
Next, illustrating another embodiment with reference to Fig. 6, adhesive film 110 and anisotropic conductive film 150 are configured to mutually
It is not overlapping, and configure and be pasted with the stacking of upper strata release paper 300 and lower floor's release paper 310 on upper strata and lower floor
Film（Fig. 6 a）；Then, lower floor's release paper 310 is opened from the film of stacking（Fig. 6 b）Afterwards, lower floor's viscosity is being opened
The lower floor of the adhesive film 110 for handling paper 310 and appearing and anisotropic conductive film 150 attaches flexible printed circuit board 100（Figure
6c）；Then, upper strata release paper 300 is opened（Fig. 6 d）Afterwards, in the bonding opened upper strata release paper 300 and appeared
Film 110 and the upper strata of anisotropic conductive film 150 attach flexible printed circuit board 100（Fig. 6 e）.By the above process, using viscous
Conjunctiva 110 and anisotropic conductive film 150, attach flexible printed circuit board 100 and fingerprint Identification sensor 200.So pasting
In the state of attached, if carrying out hot pressing to the upper strata of fingerprint Identification sensor 200, the resin of anisotropic conductive film 150 with
The resin of adhesive film 110 can melt, this will be disturbed conducting particles and can be attached at fingerprint Identification sensor 200 and flexibility
While printed circuit board (PCB) 100, it is powered by conducting particles flexible printed circuit board 100 and fingerprint Identification sensor 200.
The technical process illustrated by above-mentioned Fig. 5 and Fig. 6, can be fitted according to operating environment or job behavior
With.In addition, the order illustrated by Fig. 5 and Fig. 6 is not intended to limit, and can be changed according to operating environment or situation is
Natural.
In addition, the home key for mobile phone in the utility model is illustrated, but, the composition and mistake of the utility model
Journey is applicable to carry out manufacture and the structure of all devices of fingerprint recognition, it should belong to the right model of the utility model
Enclose.
In addition, in the utility model be applicable in adhesive film 110 in addition to DAF bonding die films, can also use OCA films or
One in person OCR (OpticalClearResin) films or adhesive (Glue) instead of using.
Above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With new thought, there will be changes, this specification content should not be construed as in specific embodiments and applications
Limitation to the utility model.
Claims (2)
- A kind of 1. attached structure of flexible printed circuit board and fingerprint Identification sensor, it is characterised in that：Include flexible printing Circuit board（100）, positioned at flexible printed circuit board（100）The fingerprint Identification sensor of upper end side（200）, flexible printed circuit board （100）With fingerprint Identification sensor（200）Between be provided with anisotropic conductive film（150）, adhesive film（110）, adhesive film （110）Centre position offer shape and anisotropic conductive film（150）Shape be adapted and up and down completely through it is hollow Portion, anisotropic conductive film（150）It is embedded in adhesive film（110）Hollow bulb in and adhesive film（110）It is conductive along anisotropy Glued membrane（150）Edge extension；Anisotropic conductive film（150）Upper surface, adhesive film（110）Upper surface respectively with fingerprint Identification sensor（200） Lower surface bond, anisotropic conductive film（150）Lower surface, adhesive film（110）Lower surface respectively with flexible printing electricity Road plate（100）Upper surface bond.
- 2. the attached structure of a kind of flexible printed circuit board according to claim 1 and fingerprint Identification sensor, its feature It is：The adhesive film（110）For DAF bonding die films, OCA films, OCR films or adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720778396.1U CN207249681U (en) | 2017-06-30 | 2017-06-30 | A kind of attached structure of flexible printed circuit board and fingerprint Identification sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720778396.1U CN207249681U (en) | 2017-06-30 | 2017-06-30 | A kind of attached structure of flexible printed circuit board and fingerprint Identification sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207249681U true CN207249681U (en) | 2018-04-17 |
Family
ID=61877239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720778396.1U Expired - Fee Related CN207249681U (en) | 2017-06-30 | 2017-06-30 | A kind of attached structure of flexible printed circuit board and fingerprint Identification sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207249681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107172825A (en) * | 2017-06-30 | 2017-09-15 | 世擎光电（东莞）有限公司 | The attached structure and method of a kind of flexible printed circuit board and fingerprint Identification sensor |
-
2017
- 2017-06-30 CN CN201720778396.1U patent/CN207249681U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107172825A (en) * | 2017-06-30 | 2017-09-15 | 世擎光电（东莞）有限公司 | The attached structure and method of a kind of flexible printed circuit board and fingerprint Identification sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20190630 |