CN215341127U - Fingerprint identification module and electronic equipment - Google Patents

Abstract

The utility model discloses a fingerprint identification module and electronic equipment, which comprise a fingerprint identification chip, a flexible circuit board and a reinforcing piece which are sequentially stacked; the flexible circuit board is clamped between the fingerprint identification chip and the reinforcing piece and is used for being electrically connected with the fingerprint identification chip; the lower surface of the reinforcing piece protrudes downwards to form a boss, and the side wall of the boss is inwards recessed with at least one recessed part; the fingerprint identification module still includes the soft colloid, and the soft colloid wraps up in the periphery of boss, and the internal surface of the soft colloid is provided with the bulge towards every depressed part protrusion, both shape phase-matchs of bulge and depressed part, and the bulge imbeds in the depressed part. According to the utility model, the structure of the reinforcing piece is changed, and the concave part is arranged on the side surface of the boss extending out of the reinforcing piece, so that the convex part of the soft colloid can be fixed, the combining capability of the soft colloid and the reinforcing piece is improved, and the falling probability of the soft colloid is reduced.

Description

Fingerprint identification module and electronic equipment

Technical Field

The present invention relates to the field of electronic devices, and in particular, to a fingerprint identification module and an electronic device.

Background

Along with the development of science and technology, electronic equipment is more and more popular, and in order to guarantee the safety in utilization and the convenience of electronic equipment, some electronic equipment has adopted the mode of fingerprint unblock. Due to the requirements of users, the comprehensive screen is widely applied, the fingerprint identification device needs to be placed on the side face of electronic equipment such as a mobile phone, the fingerprint identification device and function keys such as startup and shutdown are integrated, the integration level is higher, and meanwhile, the cost is reduced.

At present, the structure of a conventional side fingerprint identification device is as follows: the front side is a side fingerprint chip, the middle is an FPC board, and the back side is a reinforcing piece. The side fingerprint chip is placed on the side face of the mobile phone, the size of the position protruding out of the outer frame is required to be narrow, the middle position of the reinforcing piece corresponds to the keys such as a power on/off device, and soft rubber bodies made of soft materials are arranged between the keys and the reinforcing piece.

In the existing scheme, the bosses arranged at the middle positions of the soft colloid and the reinforcing piece are connected by glue, so that the soft colloid is easy to fall off and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a fingerprint identification module and an electronic device, aiming at the defects of the prior art, the structure of a reinforcement piece is optimized to improve the combining capacity between a soft colloid and a boss of the reinforcement piece, and the falling probability of the soft colloid is reduced.

The technical scheme of the utility model is realized as follows:

the utility model provides a fingerprint identification module, which comprises a fingerprint identification chip, a flexible circuit board and a reinforcing piece, wherein the fingerprint identification chip is vertically connected with the reinforcing piece, and the flexible circuit board is clamped between the fingerprint identification chip and the reinforcing piece and is electrically connected with the fingerprint identification chip;

the surface of the reinforcing piece, which is far away from the pattern recognition chip (10), is protruded to form a boss, and the side wall of the boss is inwards sunken to form at least one sunken part;

the fingerprint identification module still includes the soft colloid, the soft colloid wrap up in the periphery of boss, the internal surface of soft colloid is towards every the depressed part protrusion is provided with the bulge, the bulge embedding in the depressed part.

Further, the convex part and the concave part are matched in shape.

Further, the boss is of a square structure, and at least one side wall of the boss is provided with the concave part in an inwards concave mode.

Furthermore, the at least two opposite side walls of the boss are provided with the recessed parts, the number of the recessed parts arranged on each side wall is at least one, and the recessed parts extend along the length direction or the width direction of the boss to form a long-strip-shaped groove.

Further, the four opposite side walls of the boss are provided with the recessed portions.

Furthermore, the boss is of a cylindrical structure or a hemispherical structure, and the concave part is arranged on the side wall of the boss in a surrounding mode.

Further, the side wall of the boss is provided with a plurality of the concave parts in an inwards concave manner, and the plurality of the concave parts are arranged at intervals along the height direction of the boss.

Further, the cross-sectional dimension of the boss gradually increases from the connection with the reinforcement to the end away from the reinforcement.

Furthermore, the side wall of the boss is provided with a plurality of concave parts in an inward concave manner, and the concave parts are distributed on the side wall in a discrete point shape and are arranged in a row or a circle.

Further, the soft colloid is thermoplastic polyurethane elastomer rubber.

The utility model also provides electronic equipment comprising the fingerprint identification module.

The fingerprint identification module and the electronic equipment have the advantages that: the boss side that the reinforcement extends is provided with the depressed part, and the depressed part has the ability of hiding the glue, can fix the bulge of soft colloid to improve the combining ability of soft colloid and reinforcement, reduced the probability that the soft colloid drops.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a fingerprint identification module according to a first embodiment of the present invention;

FIG. 2 is a partially exploded view of FIG. 1;

FIG. 3 is a partially enlarged view of a portion a shown in FIG. 1;

FIG. 4 is a schematic view of the boss of FIG. 1;

FIG. 5 is a schematic structural diagram of a fingerprint identification module according to a second embodiment of the present invention;

FIG. 6 is a partially enlarged view of a portion b shown in FIG. 5;

FIG. 7 is a schematic structural diagram of a fingerprint identification module according to a third embodiment of the present invention;

FIG. 8 is an enlarged partial view of the portion c shown in FIG. 7;

FIG. 9 is a schematic view of a boss of a fingerprint identification module according to a fourth embodiment of the present invention;

FIG. 10 is a cross-sectional view of a fifth embodiment of a fingerprint recognition module according to the present invention;

fig. 11 is a structural schematic view of the boss in fig. 10.

In the figure, 10-fingerprint identification chip, 20-flexible circuit board, 30-reinforcing piece, 301-first folded plate, 302-second folded plate, 31-boss, 310-side wall, 311-concave part, 40-soft colloid, 41-containing cavity, 411-convex part and 50-key.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be construed as limiting the present invention.

[ first embodiment ]

As shown in fig. 1 to 4, in the first embodiment of the present invention, the fingerprint identification module includes a fingerprint identification chip 10, a flexible circuit board 20 and a reinforcing member 30, which are sequentially stacked; the fingerprint identification chip 10 is located on the front side of the fingerprint identification module and used for fingerprint identification; the reinforcing piece 30 is positioned on the back of the fingerprint identification module and used for reinforcing the structure; the flexible circuit board 20 is sandwiched between the fingerprint identification chip 10 and the reinforcing member 30, and is electrically connected to the fingerprint identification chip 10 to perform fingerprint detection. The flexible circuit board 20 includes an upper surface and a lower surface, the upper surface is attached to the fingerprint identification chip 10, and the lower surface is attached to the reinforcement member 30.

A key 50 for turning on and off the machine is arranged below the fingerprint identification module, wherein a boss 31 is formed on the lower surface of the reinforcing member 30 (i.e. the surface deviating from the fingerprint identification chip 10) and protruding downwards towards the key 50. In this embodiment, the boss 31 is located at a middle position in the longitudinal direction of the reinforcement 30, and faces the key 50. The sidewall 310 of the boss 31 is recessed inward to form at least one recessed portion 311, and the recessed portion 311 is mainly used for storing glue. The fingerprint identification module still includes soft colloid 40, and soft colloid 40 wraps up in the periphery of boss 31, specifically, is equipped with in the soft colloid 40 and holds chamber 41 corresponding to boss 31, holds the intracavity 41 on the internal surface of chamber 311 the protrusion be provided with bulge 411 towards the recess 311 protrusion, wherein hold the inside profile of chamber 41 and the outside profile phase-match of boss 31, bulge 411 and both shape phase-matches of recess 311. When the soft colloid 40 is wrapped on the boss 31, the boss 31 can be just accommodated in the accommodating cavity 41, so that the soft colloid 40 is wrapped on the periphery of the boss 31, and the protrusion 411 can be just correspondingly embedded in the recess 311. The mode that soft colloid 40 combines on the boss 31 specifically is at the in-process of production, the reinforcement 30 that will be provided with boss 31 is put into the mould (not shown), then pour into the molten colloid into the mould, through the molten colloid parcel boss 31 all around and flow into in the depressed part 311, form the soft colloid 40 with boss 31 shape assorted after the cooling, because the depressed part 311 has the ability of hiding the glue, thereby the combining ability of soft colloid 40 with reinforcement 30 has been improved, prevent in the use, soft colloid 40 drops.

Specifically, in order to facilitate installation and fixation of the fingerprint identification module, first folded plates 301 extend downward from two end portions of the reinforcing member 30, a second folded plate 302 extends outward from a distal end portion of each first folded plate 301, which is away from the reinforcing member 30, and each end portion of the reinforcing member 30, the first folded plate 301 and the second folded plate 302 form a half-open cavity (not numbered in the drawing), and the opening of the half-open cavity faces outward. When the fingerprint identification module is installed, the outward cavity card with the opening facing outwards through the reinforcing part 30 can be installed and fixed on the electronic equipment, and the position of the original design is separated in the use process. Preferably, in order to improve the strength of the fingerprint recognition device, the material of the reinforcing member 30 is a reinforcing steel sheet.

Specifically, referring to fig. 4, at least one sidewall 310 of the boss 31 is recessed to form a recess 311, that is, the recess 311 is formed by at least one sidewall 310 of the boss 31 being recessed inwardly. In the present embodiment, the boss 31 has a square structure, for example, a rectangular structure, two opposite side walls 310 of the boss 31 are provided with recessed portions 311, and the number of the recessed portions 311 provided on each side wall 310 may be one or more, which is illustrated as one in the drawings. The recess 311 may be formed as a groove elongated in the length direction or the width direction of the boss 31. The illustrated recessed portions 311 are provided on two opposite side walls 310 of the boss 31 in the longitudinal direction, and thus the recessed portions 311 are grooves formed to extend in a long shape in the longitudinal direction of the boss 31. When the recessed portions 311 are provided on two opposite side walls 310 of the boss 31 in the width direction, the recessed portions 311 are grooves formed to extend in a long shape along the width direction of the boss 31.

In other embodiments, the boss 31 may also have a square configuration.

In other embodiments, the four sidewalls 310 of the boss 31 may be provided with the recessed portions 311.

Because the internal surface of the soft colloid 40 corresponds to the concave part 311 and is provided with the convex part 411, when the soft colloid 40 is combined on the periphery of the boss 31 in a wrapping manner, the convex part 411 of the soft colloid 40 can be just embedded into the concave part 311, the combining capacity of the soft colloid 40 and the reinforcement 30 is improved, and the soft colloid 40 is prevented from falling off in the using process.

Specifically, the soft rubber 40 is Thermoplastic polyurethane elastomer rubber (TPU). In the actual production process, the molten colloid wraps the periphery of the boss 31 and flows into the recess 311, and after cooling, the soft colloid 40 matched with the shape of the boss 31 is formed. The thermoplastic polyurethane elastomer rubber has the advantages of wide hardness range, high mechanical strength, outstanding cold resistance, good processing performance, oil resistance, water resistance and mould resistance, the soft rubber body 40 made of the thermoplastic polyurethane elastomer rubber has longer service life, and the soft rubber body 40 has weak elasticity, so that the key 50 is not easy to damage.

[ second embodiment ]

Referring to fig. 5 and fig. 6, the difference between this embodiment and the first embodiment is that the sidewall 310 of the boss 31 is inwardly recessed to form two recessed portions 311, the two recessed portions 311 are spaced apart from each other in the height direction of the boss 31, and each recessed portion 311 extends along the length direction of the sidewall 310 to form a long-strip-shaped groove. In the present embodiment, the boss 31 has a square structure, the two opposite sidewalls 310 of the boss 31 are provided with the recessed portions 311, and the number of the recessed portions 311 provided on each sidewall 310 is two. The inner surface of the soft gel 40 is provided with two protrusions 411 corresponding to the two recesses 311 on each of the sidewalls 310.

Because the internal surface of the soft colloid 40 corresponds two concave parts 311 on every lateral wall 310 and is provided with two convex parts 411, when the soft colloid 40 combines in the periphery of boss 31 through the mode of parcel, two convex parts 411 of the soft colloid 40 can be embedded into two concave parts 311 respectively just, have improved the combining ability of soft colloid 40 and reinforcement 30, prevent in the use, the soft colloid 40 drops.

In other embodiments, different numbers of the concave portions 311 may be disposed on the sidewall 310 according to actual needs, for example, three concave portions 311 are disposed, and the effect of preventing the soft rubber body 40 from falling off can also be achieved, which is not described herein again.

[ third embodiment ]

Referring to fig. 7 and 8, the difference between this embodiment and the first embodiment is that the cross-sectional dimension of the end of the boss 31 away from the reinforcement 31 is larger than the cross-sectional dimension of the joint of the boss 31 and the reinforcement 30, and the cross-sectional dimension of the boss 31 gradually increases along the boss 31 from the joint with the reinforcement 30 to the end away from the reinforcement 31. In the present embodiment, the cross section of the boss 31 in the width direction is substantially trapezoidal, and the two side walls 310 of the boss 31 in the length direction are inclined planes. In the present embodiment, two opposite sidewalls 310 of the boss 31 are each provided with a recess 311. In other embodiments, the number of recesses 311 provided on each sidewall 310 may be increased to two or three. The cross sectional dimension of the end of the boss 31 far away from the reinforcement 31 is larger than the cross sectional dimension of the joint of the boss 31 and the reinforcement 30, the length of the side wall 310 of the boss 31 can be increased, thereby more recessed parts 311 are arranged or the recessed parts 311 with larger width dimension are arranged, meanwhile, because the two side walls 310 of the boss 31 are inclined planes, the two side walls 310 have the inward-contracting glue hiding effect, the combining capability of the soft glue body 40 and the reinforcement 30 is further improved, and the effect of preventing the soft glue body 40 from falling off can be better achieved.

[ fourth embodiment ]

Referring to fig. 9, the difference between the present embodiment and the first embodiment is that the concave portion 311 formed on each side wall 310 of the boss 31 is not an elongated groove, but is formed by a plurality of concave portions 311 distributed discretely. The plurality of recesses 311 are disposed in a row on the sidewall 310 of the boss 31 in a dotted manner. The inner surface of the soft gel body 40 is provided with a plurality of protrusions 411 corresponding to the plurality of recesses 311 on each of the sidewalls 310, and the protrusions 411 are also arranged in a row along the inner side of the soft gel body 40. In other embodiments, the concave portions 311 and the convex portions 411 may each be arranged in a plurality of rows in a matrix.

Because the internal surface of soft colloid 40 is provided with bulge 411, and the shape phase-match of soft colloid 40 and boss 31, when soft colloid 40 combined in the periphery of boss 31 through the mode of parcel, a plurality of bulges 411 of soft colloid 40 just can imbed in a plurality of depressed parts 311 respectively, improved soft colloid 40 and reinforcement 30's combining ability, prevented in the use, soft colloid 40 drops.

[ fifth embodiment ]

Referring to fig. 10 and 11, the difference between the present embodiment and the first embodiment is that the boss 31 is a cylinder structure or a hemisphere structure, and the recess 311 is disposed around the sidewall 310 of the boss 31, specifically, the recess 311 may be disposed around the sidewall 310 at a position where the boss 31 and the reinforcing member 30 are connected. The recess 311 may be a continuous groove arranged in one turn around the boss 31, or may be formed by a plurality of recesses 311 distributed in discrete dots and arranged in one turn. The soft colloid 40 is wrapped on the periphery of the boss 31, and the inner surface of the soft colloid 40 is provided with an annular convex part 411 corresponding to the concave part 311. When the soft colloid 40 is combined on the periphery of the boss 31 in a wrapping manner, the convex part 411 of the soft colloid 40 can be just embedded into the concave part 311, so that the combining capability of the soft colloid 40 and the reinforcement piece 30 is improved, and the soft colloid 40 is prevented from falling off in the use process. In other embodiments, the boss 31 may have other shapes, and the effect of preventing the soft rubber body 40 from falling off can also be achieved.

In other embodiments, the number of the recessed portions 311 circumferentially disposed on the side wall 310 may also be multiple, for example, two or three, and the plurality of recessed portions 311 are disposed at intervals along the height direction of the boss 31.

In other embodiments, the cross-sectional dimension of the boss 31 gradually increases along the boss 31 from the connection with the reinforcement 30 to the end away from the reinforcement 31. At this time, since the side wall 310 of the boss 31 is an inclined surface, the side wall 310 itself has an inward-contracting glue-hiding effect, so that the combining ability of the soft glue body 40 and the reinforcement member 30 is further improved, and a better effect of preventing the soft glue body 40 from falling off can be achieved.

The utility model also provides electronic equipment comprising the fingerprint identification module. The electronic device may be a smartphone, a tablet, an e-book reader, or a wearable device. Of course, the electronic device may also be other devices, and the present invention is not limited to this.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A fingerprint identification module comprises a fingerprint identification chip (10), a flexible circuit board (20) and a reinforcement piece (30) which are sequentially stacked,

the surface of the reinforcing piece (30) facing away from the grain identification chip (10) is protrudingly formed with a boss (31), and the side wall (310) of the boss (31) is inwards recessed with at least one recessed part (311);

the fingerprint identification module still includes soft colloid (40), soft colloid (40) wrap up in the periphery of boss (31), the internal surface of soft colloid (40) is towards every recess (311) protrusion is provided with bulge (411), bulge (411) embedding in recess (311).

2. The fingerprint identification module of claim 1, wherein: the shape of the convex part (411) is matched with that of the concave part (311) in which the convex part (411) is correspondingly embedded.

3. The fingerprint identification module of claim 1, wherein: the boss (31) is of a square structure, and at least one side wall (310) of the boss (31) is provided with the concave part (311) in an inwards concave mode.

4. The fingerprint identification module of claim 1, wherein: the at least two opposite side walls (310) of the boss (31) are provided with the recessed parts (311), the number of the recessed parts (311) arranged on each side wall (310) is at least one, and the recessed parts (311) extend along the length direction or the width direction of the boss (31) to form a long-strip-shaped groove.

5. The fingerprint identification module of claim 1, wherein: the four opposite side walls (310) of the boss (31) are provided with the recessed parts (311).

6. The fingerprint identification module of claim 1, wherein: the boss (31) is of a cylindrical structure or a hemispheroidal structure, and the concave part (311) is arranged on the side wall (310) of the boss (31) in a surrounding mode.

7. The fingerprint identification module of any one of claims 1-6, wherein: the side wall (310) of the boss (31) is provided with a plurality of concave parts (311) in an inward concave mode, and the concave parts (311) are arranged at intervals in the height direction of the boss (31).

8. The fingerprint identification module of any one of claims 1-6, wherein: the cross-sectional dimension of the boss (31) gradually increases from the junction with the reinforcement (30) to the end away from the reinforcement (30).

9. The fingerprint identification module of any one of claims 1, 3, and 6, wherein: the side wall (310) of the boss (31) is provided with a plurality of concave parts (311) in an inwards concave mode, and the concave parts (311) are distributed on the side wall (310) in a discrete point mode and are arranged in a row or a circle.

10. An electronic device, characterized in that: comprising the fingerprint recognition module of any one of claims 1-9.

Images