CN207718394U - Fingerprint recognition module - Google Patents

Abstract

The utility model discloses a kind of fingerprint recognition module, it includes capacitance type fingerprint identification chip and is arranged the composite construction layer made of insulating materials on fingerprint recognition chip-side surface, the composite construction layer include whole face be arranged fingerprint recognition module surface decorative layer and be arranged the decorative layer outer surface and with the decorative layer have visual effect difference pattern layer, the thickness of the pattern layer is less than or equal to 6 μm, around the pattern layer or/and it is internally provided with hollow out position, it is covered with the transparent protective layer protected to pattern layer and decorative layer in the pattern layer and the decorative layer outer surface.The fingerprint recognition chip of the fingerprint recognition module is not but not exposed, and overall appearance aesthetic effect is good.

Description

Fingerprint recognition module

Technical field

The utility model is related to a kind of fingerprint recognition component field, especially a kind of fingerprint recognition module.

Background technology

Fingerprint identification technology refers to the signal of the valley and a ridge by the induction of fingerprint recognition module, analysis fingerprint to identify fingerprint Information.Since everyone fingerprint has uniqueness, safe, and its side of operating of fingerprint identification technology Just quick.Currently, fingerprint identification technology has been widely used on electronic product.

In order to realize fingerprint identification function on electronic product, it usually needs be the fingerprint knowledge that will be provided with fingerprint identification function Other module is integrated in inside electronic product；Since fingerprint identification chip appearance simple coarse is not beautiful enough in fingerprint recognition module, Directly using the apparent visual effect that can reduce electronic product；In order to promote the aesthetics of fingerprint recognition module, in the fingerprint Identification chip surface is provided with decorative layer；But traditional decorative layer color is relatively simple, and fingerprint recognition module aesthetics is caused to have Limit, easily causes aestheticly tired；Therefore, how by change fingerprint recognition module structure, further to promote fingerprint recognition Module entirety visual attractiveness is the technical barrier put in face of research and development technology personnel.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of fingerprint recognition module, the fingerprints of the fingerprint recognition module Identification chip is not but not exposed, and overall appearance aesthetic effect is good.

In order to solve the above technical problems, the utility model uses following technical proposals：The fingerprint recognition module includes capacitance Formula fingerprint recognition chip and the composite construction layer made of insulating materials on fingerprint recognition chip-side surface is set, institute It includes that whole face is arranged in the decorative layer on fingerprint recognition module surface and setting outside the decorative layer to state composite construction layer Side surface and the pattern layer with the decorative layer with visual effect difference, the thickness of the pattern layer are less than or equal to 6 μm, Around the pattern layer or/and it is internally provided with hollow out position, is covered in the pattern layer and the decorative layer outer surface The transparent protective layer that pattern layer and decorative layer are protected.

The thickness of design concept according to the present utility model, composite construction layer described in the utility model is 15 ~ 300 μm.

Design concept according to the present utility model, pattern layer described in the utility model are and the decorative layer color, refractive power Effect and/or reflecting effect have discrepant film layer.

Design concept according to the present utility model, transparent protective layer described in the utility model are to be covered in outside the pattern layer The clear coat at hollow out position in surface and pattern layer；The clear coat is light oil reservoir, ink layer or film plating layer.

Design concept according to the present utility model, hollow out position in decorative layer blank map pattern layer described in the utility model and The pattern layer outer surface and the decorative layer outer surface are coplanar, and the transparent protective layer whole face is covered in the pattern layer With the decorative layer outer surface；The transparent protective layer is glass cover-plate.

Design concept according to the present utility model, decorative layer described in the utility model be film plating layer, ink layer or photoresist layer, The pattern layer is film plating layer, ink layer or photoresist layer.

Compared with prior art, the utility model has following advantageous effects：（1）Fingerprint recognition mould described in the utility model There is the composite construction layer of group decorative layer and pattern layer, the decorative layer fingerprint recognition chip can be covered and be decorated, and Pattern layer can be according to the requirement of user, and makes and form multiple patterns, makees to play beautification to fingerprint recognition module surface With, and then promote the apparent visual effect of the fingerprint recognition module；In addition, because the pattern layer and the decorative layer have vision Difference on effect can make pattern layer with respect to decorative layer display more outstanding, and then promote the aesthetic feeling of pattern layer；（2）Because this practicality is new The thickness of type pattern layer is set smaller than or equal to 6 μm, meanwhile, the overall thickness of composite construction layer is set as 15 ~ 300 μm, at this In a thickness range, the composite construction layer is smaller to the interference of fingerprint inductive signal, it is ensured that the fingerprint recognition module Refuse that sincere and accuracy of system identification is all smaller, meet the requirement of fingerprint identification function；（3）The transparent protective layer of the utility model, can Insulation blocking is carried out to the pattern layer, prevents pattern layer from generating phenomena such as falling off when used for a long time, the fingerprint is promoted and knows The service life of other module.

Description of the drawings

Fig. 1 is the main structure diagram of fingerprint recognition module described in the utility model；

Fig. 2 is the A-A of an embodiment in Fig. 1 to diagrammatic cross-section；

Fig. 3 is the A-A of another embodiment in Fig. 1 to diagrammatic cross-section.

Accompanying drawings symbol description：

1 fingerprint recognition chip

2 composite construction layers

21 decorative layers

22 pattern layers

23 transparent protective layers.

Specific implementation mode

Fingerprint recognition module described in the utility model identifies module apparent visual effect list mainly for current finger print One the problem of, provides a solution；In order to which the technical solution of the utility model is better described, by the following examples simultaneously It is illustrated in conjunction with attached drawing.

Referring to Fig. 1 and Fig. 2, as one embodiment of the utility model, the fingerprint recognition module includes fingerprint recognition Chip 1 and the composite construction layer 2 in 1 one side surface of fingerprint recognition chip is set.Wherein, the fingerprint recognition chip 1 is Capacitance type fingerprint identification chip, the fingerprint inductive signal for identification of the fingerprint recognition chip 1；The composite construction layer 2 is arranged It is equipped with a side surface of fingerprint induction zone in the fingerprint recognition chip 1, the fingerprint recognition chip 1 formation can be blocked, Covering, promotes the whole visual effect of the fingerprint recognition module.

In order to avoid the composite construction layer 2 is right during the fingerprint recognition chip 1 identifies fingerprint inductive signal It is interfered, and the composite construction layer 2 is preferably provided with to be made of insulating materials.

In general, 1 appearance simple coarse of the fingerprint recognition chip is not beautiful enough, in order to avoid the fingerprint recognition chip 1 It has an X-rayed in outer and reduce the overall appearance visual effect of the fingerprint recognition module, the composite construction layer 2 is set as including one Decorative layer 21,21 whole face of the decorative layer are covered in a side surface of the fingerprint recognition chip 1.Specifically, the decorative layer 21 are made of light screening material, prevent the fingerprint recognition chip 1 from outer by reducing the translucency of the composite construction layer 2 Boundary is visible.In the present invention, the decorative layer 21 can be film plating layer, insulating oil layer of ink made of being coated with by insulating materials Or insulation photoresist layer.

In order to further enhance the exterior aesthetics and decorative effect of the fingerprint recognition module, the composite construction layer 2 Further include having a pattern layer 22, the pattern layer 22 is arranged in 21 outer surface of the decorative layer.The pattern layer 22 can basis Actual needs is designed to different pattern, to promote the Integral decoration effect of the composite construction layer 2, avoids Visual Aesthetics tired Labor.

However, due to being limited by pattern form, the pattern layer 22 is not that whole face is covered in the decorative layer 21 Surface around the pattern layer 22 or/and is internally provided with hollow out position.And the presence at hollow out position can change composite construction The composition of medium in layer 2, and the uniformity of dielectric distribution in composite construction layer 2 is destroyed, to know to the fingerprint recognition chip 1 Other fingerprint inductive signal forms interference, increases the difficulty of fingerprint recognition module identification finger print information.In order to weaken the pattern layer The thickness of 22 interference, the pattern layer 22 must be sufficiently small；In the present invention, the thickness of the pattern layer 22 is set as Less than or equal to 6 μm.In the case where 22 thickness of the pattern layer is less than or equal to 6 μm, refusing for the fingerprint recognition module is true Rate（FRR）Less than 0.002%, accuracy of system identification（FAR）Less than 3%, the requirement of fingerprint identification function can be met.

Meanwhile in order to more highlight the pattern layer 22 to enhance the decorative effect of the composite construction layer 22, the figure Pattern layer 22 is set as having visual effect difference with the decorative layer 21.It specifically can behave as the pattern layer 22 and the decoration Layer 21 has color distortion, can also show as the refractive power effect of the pattern layer 22 and the decorative layer 21 and/or reflective effect Fruit has difference.

In the present invention, the pattern layer 22 be also be made of insulating materials, can be film plating layer, ink layer or Photoresist layer.

Furthermore, it is contemplated that the pattern layer 22 is than relatively thin, in order to avoid user it is long-term using operating process in figure Pattern layer 22 causes to wear, and the composite construction layer 2 further comprises that a transparent protective layer 23,23 whole face of the transparent protective layer cover It covers in the outer surface of the pattern layer 22 and the decorative layer 21.By using the transparent protective layer 23 to the pattern layer 22 Insulation blocking is carried out, is damaged by external force to prevent the pattern layer 22；The transparent protective layer 23 can also protect dress simultaneously Adorn the erosion and destruction of layer 21 and pattern layer 22 from environmental contaminants.Need to illustrate herein is exactly a little the transparent guarantor Sheath 23 can be that water white transparency can also be colored transparent, as long as being by 23 perspective pattern layer 22 of the transparent protective layer It can.

More specifically, referring to Fig. 2, one as the transparent protective layer 23 in fingerprint recognition module described in the utility model Embodiment, the transparent protective layer 23 are the clear coats made of insulating materials.The clear coat is covered in the pattern The outer surface of layer 22, and fills the hollow out position of the pattern layer 22, to the decorative layer 21 and pattern layer 22 jointly into Row insulation blocking.Herein, the clear coat can be light oil reservoir, ink layer or film plating layer.

Referring to Fig. 3, as another embodiment of transparent protective layer 23 in fingerprint recognition module described in the utility model, institute It is glass panel to state transparent protective layer 23.In this embodiment, engraving in the pattern layer 22 is filled using the decorative layer 21 Empty position, and the outer surface of the decorative layer 21 and the outer surface of the pattern layer 22 are set as being in same plane On；By the way that the glass panel to be covered in the outer surface of the decorative layer 21 and the pattern layer 22 simultaneously, to described Decorative layer 21 and pattern layer 22 carry out insulation blocking jointly.

Using the fingerprint recognition module when, using the outer surface of transparent protective layer 23 in the composite construction layer 2 as Fingerprint identification region.In this way, when finger touches pressing in fingerprint identification region, fingerprint inductive signal needs to penetrate described compound Structure sheaf 2, i.e. the fingerprint inductive signal need while penetrating transparent protective layer 23, pattern layer 22 and decorative layer 21 to get to The fingerprint recognition chip 1, and fingerprint inductive signal is identified by the fingerprint recognition chip 1.However, working as composite junction When the thickness of structure layer 2 is excessive, the decaying of fingerprint inductive signal is serious, 1 None- identified fingerprint inductive signal of fingerprint recognition module.In order to Ensure that the fingerprint recognition chip 1 can realize that the identification to fingerprint inductive signal, the thickness of the composite construction layer 2 are preferably provided with It is 15 ~ 300 μm.

Claims (6)

1. a kind of fingerprint recognition module, including capacitance type fingerprint identification chip and setting are on fingerprint recognition chip-side surface The composite construction layer made of insulating materials, which is characterized in that the composite construction layer include whole face be arranged in the fingerprint The decorative layer and setting for identifying module surface have visual effect poor in the decorative layer outer surface and with the decorative layer Different pattern layer, the thickness of the pattern layer are less than or equal to 6 μm, around the pattern layer or/and are internally provided with and engrave Empty position is covered with the transparent guarantor protected to pattern layer and decorative layer in the pattern layer and the decorative layer outer surface Sheath.

2. fingerprint recognition module according to claim 1, which is characterized in that the thickness of the composite construction layer is 15 ~ 300 μm。

3. fingerprint recognition module according to claim 1, which is characterized in that the pattern layer be and the decorative layer face Color, refractive power effect and/or reflecting effect have discrepant film layer.

4. fingerprint recognition module according to claim 3, which is characterized in that the transparent protective layer is to be covered in the figure The clear coat at hollow out position in pattern layer outer surface and pattern layer；The clear coat is light oil reservoir, ink layer or film plating layer.

5. fingerprint recognition module according to claim 3, which is characterized in that the hollow out in the decorative layer blank map pattern layer The position and pattern layer outer surface and the decorative layer outer surface are coplanar, the transparent protective layer whole face are covered in described Pattern layer and the decorative layer outer surface；The transparent protective layer is glass cover-plate.

6. fingerprint recognition module according to claim 3, which is characterized in that the decorative layer be film plating layer, ink layer or Photoresist layer, the pattern layer are film plating layer, ink layer or photoresist layer.