WO2017201755A1 - 指纹模组及电子设备 - Google Patents

指纹模组及电子设备 Download PDF

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Publication number
WO2017201755A1
WO2017201755A1 PCT/CN2016/083755 CN2016083755W WO2017201755A1 WO 2017201755 A1 WO2017201755 A1 WO 2017201755A1 CN 2016083755 W CN2016083755 W CN 2016083755W WO 2017201755 A1 WO2017201755 A1 WO 2017201755A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint
assembly
bracket
circuit board
component
Prior art date
Application number
PCT/CN2016/083755
Other languages
English (en)
French (fr)
Inventor
赵奎兵
郭文平
马冬
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16902744.8A priority Critical patent/EP3467701B1/en
Priority to PCT/CN2016/083755 priority patent/WO2017201755A1/zh
Priority to CN201680025129.5A priority patent/CN107851177B/zh
Priority to US16/304,804 priority patent/US11138403B2/en
Publication of WO2017201755A1 publication Critical patent/WO2017201755A1/zh
Priority to HK18103405.3A priority patent/HK1244089A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components

Definitions

  • the present invention relates to a fingerprint module for an electronic device, and more particularly to a fingerprint module and an electronic device that combine a button and a fingerprint function.
  • the fingerprint recognition module with buttons can realize a plurality of expansion functions such as pressing fingerprint unlocking and button triggering, and is widely used as a HOME key in the terminal field.
  • new challenges are placed on the structural design.
  • the assembly is cumbersome, the structural size chain is long, resulting in a bad hand feeling, and the hand touch detection of pressing the fingerprint button cannot be performed before the whole machine is assembled, which is increasingly becoming a design bottleneck, and the prior art is conventional.
  • the design solution is difficult to meet the project needs.
  • the technical problem to be solved by the embodiments of the present application is to provide a fingerprint module that can simplify the assembly of the production line and can test the fingerprint module feel before assembly.
  • the present application provides a fingerprint module, including a fingerprint component, a button component, a bracket, and an elastic fixing component.
  • the button component is fixedly connected to a lower surface of the fingerprint component, and the elastic fixing component is disposed on the fingerprint.
  • a lower surface of the component is located between the fingerprint component and the bracket, the elastic fixing member surrounds the button component, and the elastic fixing member elastically connects the fingerprint component and the bracket.
  • the fingerprint component and the button component are integrated into one fingerprint module, and the bracket and the fingerprint component are combined by the elastic fixing component, so that when the fingerprint component is not assembled into the electronic device, the pressing feeling of the button component can be first performed. Testing, ensuring good test conditions, and then assembling, and the integrated structure makes the assembly process of the production line also streamlined.
  • the integrated module feeding is beneficial to reduce the related parts of the fingerprint module assembly process. Fixing the bracket to the touch screen or the battery cover or the rear cover is sufficient, and the button assembly is mounted on the fingerprint component through the SMT process technology, so that there is no gap between the button component and the fingerprint component, and the influence of the fingerprint button on the fingerprint button can be reduced. Or press the size of the dummy bit.
  • the fingerprint component is connected to the touch screen or the battery cover or the rear case in the electronic device through the bracket therein.
  • the bracket not only has the function of mounting and fixing, but also provides contact with the button assembly during the pressing process, and provides a moving stroke of the button assembly, and gives the user a feeling.
  • the bracket includes a main body, a fixed side, and a connecting arm, and the connecting arm is connected between the main body and the fixed side, and the fixed side is used for connecting with other components of the electronic device,
  • the main body is disposed opposite to the button assembly.
  • the connecting arm is bent from the edge of the main body toward the fingerprint component, and the connecting arm can be perpendicular to the surface where the main body is located, and the fixed side is bent from the edge of the connecting arm away from the main body, and the fixed side and the main body are respectively located Connect the sides of the arm.
  • the fixed edge is fixedly connected to the touch screen or the battery cover or the rear case of the electronic device.
  • the bracket can be integrally formed by sheet metal parts.
  • the fixed edge is provided with a glue overflow groove for fixedly connecting the bracket to other components of the electronic device (touch screen or battery cover or rear case) by dispensing.
  • the dispensing process not only helps to reduce the installation gap or tolerance between the fingerprint module and other components, but also improves the waterproof sealing performance of the fingerprint module by means of the waterproof sealing performance of the sealing glue, thereby improving the service life and safety.
  • the connecting arm surrounds the main body and forms a receiving space together with the main body, and the button assembly and the elastic fixing member are both accommodated in the receiving space. That is to say, the connecting wall is surrounded by an annular structure, the main body is located at the bottom of the connecting wall, and the fixed side is formed at the outer side of the top of the connecting wall.
  • the bracket is a metal integrally formed structure, and an insulating layer is disposed on a surface of the body facing away from the fingerprint component.
  • the insulating layer is an insulating sheet, for example, a Mylar sheet, which is adhered to the surface of the main body by an adhesive, and the insulating layer may be formed in a direction in which the surface of the main body is coated with an insulating coating.
  • the function of the insulating layer is to isolate the bracket from the electronic components or the motherboard inside the electronic device to prevent static electricity from damaging the electronic component or the motherboard through the bracket.
  • the fingerprint component includes a circuit board and a fingerprint identification chip disposed on the circuit board, and a surface of the fingerprint identification chip facing away from the circuit board is the touch surface, the circuit board The surface facing away from the fingerprint identification chip is the mounting surface (ie, the lower surface), the fingerprint module further includes a flexible circuit board, one end of the flexible circuit board is electrically connected to the circuit board, and the button component passes The circuit board and the flexible circuit board are electrically connected to a main board in an electronic device.
  • the fingerprint identification chip and the button component are respectively disposed on both sides of the circuit board, and can be directly fabricated by the SMT process, thereby integrating the fingerprint identification chip and the button component.
  • the bracket is provided with an outlet port for the flexible circuit board to extend from the circuit board to the outside of the bracket, and the outlet port is filled with a sealing material to make the flexible circuit board and the A waterproof structure is formed between the brackets.
  • a flexible circuit board is connected between the circuit board and a motherboard or other electronic component in the electronic device, and the flexible circuit board is provided with a driving circuit for driving the fingerprint identification chip.
  • the fingerprint assembly further includes a metal ring, the metal ring is disposed at a periphery of the fingerprint identification chip, a part of the metal ring is fixedly connected to the circuit board, and a part of the metal ring covers the fingerprint identification chip An edge region on one side of the circuit board.
  • the metal ring is fixed to the circuit board by a conductive adhesive, so that the metal ring is electrically connected to the ground of the circuit board.
  • the metal ring not only protects the edge of the fingerprint identification chip, but also has a decorative effect, and can also absorb the static electricity of the human body through the metal ring to prevent the interference and destruction of the fingerprint recognition chip by the static electricity.
  • the elastic fixing member is a waterproof rubber, and the waterproof rubber surrounds the button assembly, and the waterproof rubber and the fingerprint assembly and the waterproof rubber and the bracket are fixedly connected by a waterproof adhesive.
  • the cross section of the elastic fixing member may have a "several" shape or a "Z" shape.
  • One end surface of the elastic fixing member is fixed to the surface of the circuit board of the fingerprint unit by a waterproof glue.
  • the fingerprint module has a substantially disk-like structure (excluding a portion of the flexible circuit board), wherein the fingerprint component has a disk shape and is elastically fixed in a ring shape.
  • the present application further provides an electronic device, including the fingerprint module according to any one of the foregoing embodiments.
  • the fingerprint component and the button assembly are connected to the bracket through the elastic fixing member, so that the production line assembly is more compact and the fingerprint module feel can be tested before assembly.
  • the fingerprint module of the present application is applied in an electronic device, which is beneficial to the development of thin and light electronic devices, and also simplifies assembly of electronic devices and saves assembly costs.
  • FIG. 1 is a perspective view of a fingerprint module according to an embodiment of the present application.
  • FIG. 2 is a perspective view of the fingerprint module shown in FIG. 1 mounted on a touch screen or a battery cover or a rear case of an electronic device.
  • FIG. 3 is a cross-sectional view of the fingerprint module of FIG. 1 mounted on a touch screen or a battery cover or a rear case of an electronic device.
  • FIG. 4 is a cross-sectional view of the fingerprint module of FIG. 1 mounted in another direction on a touch screen or a battery cover or a rear case of an electronic device.
  • FIG. 1 shows a fingerprint module 100 provided by the present application.
  • the fingerprint module 100 is mounted on a touch screen or a battery cover or a rear case 201 of the electronic device 200, as shown in FIGS. 2 and 3.
  • the fingerprint module 100 includes a fingerprint component 10 , a button assembly 20 , a bracket 30 , and an elastic fixing component 40 .
  • the fingerprint assembly 10 includes a contact surface P and a mounting surface S disposed opposite each other.
  • the fingerprint component 10 includes a circuit board 12 and a fingerprint identification chip 14 disposed on the circuit board 12, and the surface of the fingerprint identification chip 14 facing away from the circuit board 12 is the touch pressure.
  • the surface P, the surface of the circuit board 12 facing away from the fingerprint identification chip 14 is the mounting surface S, and the mounting surface S is the lower surface of the fingerprint component.
  • the fingerprint module 10 further includes a flexible circuit board 15 , and one end of the flexible circuit board 15 is electrically connected to the circuit board 12 .
  • the circuit board 12 and the fingerprint recognition chip 14 are each mounted on a disk, and the fingerprint recognition chip 14 is mounted at the center of the circuit board 14.
  • the flexible circuit board 15 is connected between the circuit board 12 and a motherboard or other electronic component in the electronic device.
  • the flexible circuit board 15 is provided with a driving circuit for driving the fingerprint identification chip, and the edge of the circuit board 12 is close to the edge.
  • a connector is provided at the position, and a connector matching the connector on the circuit board 12 is also disposed on the flexible circuit board 15, and the electrical connection between the flexible circuit board 15 and the circuit board 12 is realized by the mutual cooperation of the connectors.
  • the button assembly 20 is electrically connected to the main board in the electronic device through the circuit board 12 and the flexible circuit board 15. The button assembly 20 is moved when the pressing force is received, thereby triggering the circuit inside the button assembly 20 to implement the button function.
  • the fingerprint assembly 10 further includes a metal ring 16 disposed on a periphery of the fingerprint identification chip 14, and a portion of the metal ring 16 is fixedly connected to the circuit board 12, and the metal is partially
  • the ring 16 encloses an edge region of the fingerprint identification chip 14 remote from the side of the circuit board 12.
  • the metal ring 16 and the circuit board 12 are fixed by a conductive adhesive such that the metal ring 16 is electrically connected to the ground end of the circuit board 12.
  • the metal ring 16 not only protects the edge of the fingerprint identification chip 14 but also has a decorative effect, and can also absorb static electricity of the human body through the metal ring 16 to prevent interference and damage of the static electricity on the fingerprint recognition chip 14.
  • the button assembly 20 is disposed on the mounting surface S (ie, the lower surface of the fingerprint component 10).
  • the fingerprint identification chip 14 and the button assembly 20 are respectively disposed on both sides of the circuit board 12, and can directly pass the SMT process.
  • the fingerprint identification chip 14 and the key assembly 20 are integrated into one body.
  • the button assembly 20 is disposed in a central area of the circuit board 12.
  • the elastic fixing member 40 is connected between the mounting surface S (ie, the lower surface of the fingerprint assembly 10) and the bracket 30.
  • the elastic fixing member 40 surrounds the button assembly 20, specifically, the elastic fixing member. 40 is centered on the button assembly 20 and is distributed symmetrically around the periphery of the button assembly 20.
  • the elastic fixing member 40 may have a ring-shaped integrated structure, and the button assembly 20 is disposed at the center of the elastic fixing member 40.
  • the elastic fixing member 40 may include a plurality of elastic members, and a plurality of elastic members. The button assembly 20 is centered and distributed symmetrically around the periphery of the button assembly 20.
  • the elastic members may be three, four or more, as long as they are symmetrically distributed on the periphery of the button assembly 20, and the bottom of the button assembly 20 is secured. It can be evenly supported.
  • the bracket 30 includes a contact area 31 disposed opposite the button assembly, and a gap is formed between the button assembly 20 and the bracket 30. When the pressing surface P is pressed, the elastic fixing member 40 is deformed, the gap between the button assembly 20 and the bracket 30 is reduced, and the button assembly 20 is brought into contact with the contact area 31, and the bracket 30 is For rigid elements, the process by which the button assembly 20 is in contact with the contact area 31 can provide a user with a pressing feel.
  • the bracket 30 includes a main body 32, a fixed side 36 and a connecting arm 34.
  • the connecting arm 34 is connected between the main body 32 and the fixed side 36.
  • the fixed side 36 is used for The other components of the electronic device 200 are connected, and the main body 32 is disposed opposite to the mounting surface S.
  • the contact area 31 is located in a central region of the main body 32.
  • the connecting arm 34 is bent from the edge of the main body 32 toward the fingerprint assembly 10, the connecting arm 34 can be perpendicular to the surface of the main body 32, and the fixed side 36 is bent from the edge of the connecting arm 34 away from the main body 32.
  • the fixed side 36 and the main body 32 are respectively located at two sides of the connecting arm 34.
  • the fixed edge 36 is fixedly connected to the touch screen of the electronic device 200, or the battery cover or the rear case 201 (as shown in FIGS. 2 and 3).
  • an auxiliary positioning hole H may be added to the fixed edge 36 (eg As shown in FIG. 1 , the auxiliary positioning hole H can ensure the concentricity of the fingerprint component 10 , the button assembly 20 , and the like when the fingerprint module 100 is assembled.
  • the bracket 30 can be integrally formed by a sheet metal member, and the bracket 30 can also be a plastic member.
  • the fixed edge 36 is provided with a glue overflow groove 362 for fixedly connecting the bracket 30 to other components 201 of the electronic device 200 by way of dispensing (touch screen, or battery). Cover, or back shell).
  • the dispensing process not only helps to reduce the installation gap or tolerance between the fingerprint module 100 and other components, but also improves the waterproof sealing performance of the fingerprint module 100 by using the waterproof sealing performance of the sealing glue, thereby improving the service life and safety.
  • the connecting arm 34 surrounds the main body 32 and forms a receiving space with the main body 32.
  • the button assembly 20 and the elastic fixing member 40 are both accommodated in the receiving space. That is, the connecting wall 34 is surrounded by an annular structure, the main body 32 is located at the bottom of the connecting wall 34, and the fixed side 36 is formed at the outer side of the top of the connecting wall 34.
  • the bracket 30 is a metal integrally formed structure, and an insulating layer 37 is disposed on a surface of the main body 32 facing away from the fingerprint assembly 10, as shown in FIG.
  • the insulating layer 37 is an insulating sheet, for example, a Mylar sheet, which is adhered to the surface of the main body by an adhesive, and the insulating layer 37 may be formed in a direction in which the surface of the main body 32 is coated with an insulating coating.
  • the function of the insulating layer 37 is to isolate the bracket 30 from the electronic components or the main board inside the electronic device to prevent static electricity from damaging the electronic component or the main board through the bracket 30.
  • the main body of the fixed side 36 has an annular surrounding structure, and the main body of the overflowing groove 362 also has an annular surrounding groove.
  • the flexible circuit board 15 is provided from the circuit board 12. Extending to the outside of the bracket 30, the bracket 30 is provided with a wire outlet 38. At a corresponding position of the outlet port 38, a flat fixed edge of the overflow-free glue groove 362 corresponding to the width of the outlet port 38 is formed, and a lower portion is provided. Connecting arm 34.
  • the flexible circuit board 15 passes through the outlet 38, is fixed to the fixed side 36 by the conductive adhesive 18, and is bonded to the electronic device 200 by a sealing material 17 (for example, a PET film) so that the flexible circuit board 15 is A waterproof structure is formed between the brackets 30.
  • a sealing material 17 for example, a PET film
  • the elastic fixing member 40 is a waterproof rubber surrounding the button assembly 20, the waterproof rubber 40 and the fingerprint assembly 10 and the waterproof rubber 40 and The brackets 30 are fixedly connected by a waterproof glue.
  • the cross section of the elastic fixing member 40 may have a "several" shape or a "Z" shape.
  • One end surface of the elastic fixing member 40 is fixed to the surface of the circuit board 12 of the fingerprint unit 10 by a waterproof glue.
  • the fingerprint module 100 has a substantially disk-like structure (excluding a portion of the flexible circuit board), wherein the fingerprint assembly 10 has a disk shape, and the elastic fixing 40 is annular.
  • the fingerprint assembly 10 and the button assembly 20 are integrated into a fingerprint module 100, and the bracket 30 is coupled to the fingerprint assembly 10 through the elastic fixing member 40, so that the fingerprint assembly 10 can be assembled into the electronic device 200.
  • the pressing feeling of the button assembly 20 is tested to ensure that the test is good, and then the assembly is performed.
  • the integrated structure makes the assembly process of the production line also simplified, and the integrated module feeding is advantageous for reducing the fingerprint module 100.
  • the relevant parts of the assembly process can be directly fixed to the touch screen or the battery cover or the rear cover when assembling, and the button assembly 20 is mounted on the fingerprint assembly 10 through the SMT process, so that the button assembly 20 and the fingerprint are provided. There is no gap between the components 10, which can reduce the size that affects whether the fingerprint button is stuck or pressed.
  • the fingerprint assembly 10 is connected to a touch screen or a battery cover or a rear case in the electronic device through a bracket 30 therein.
  • the fingerprint module 100 of the present application is applied to the electronic device 200, which facilitates the development of the thinning and thinning of the electronic device 200, and also simplifies assembly of the electronic device 200, thereby saving assembly costs.
  • the electronic device can be, for example, a mobile phone, a tablet computer, a notebook computer, a UMPC (Ultra-mobile Personal Computer), a netbook, a PDA (Personal Digital Assistant), an industrial device, and the like that require fingerprint recognition. In the device.

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Abstract

一种指纹模组（100），包括指纹组件（10）、按键组件（20）、支架（30）及弹性固定件（40），所述按键组件（20）固定连接于所述指纹组件（10）下表面，所述弹性固定件（40）设置于所述指纹组件（10）下表面，位于所述指纹组件（10）和所述支架（30）之间，所述弹性固定件（40）包围所述按键组件（20），且所述弹性固定件（40）弹性连接所述指纹组件（10）与所述支架（30）。所述按键组件（20）与所述支架（30）之间具有一间隙，所述指纹组件（10）受到按压时，所述弹性固定件（40）变形，所述间隙减小，所述按键组件（20）与所述支架（30）接触。上述方案将指纹组件和按键组件通过弹性固定件与支架连接，从而使生产线组装精简且可以在组装前就能够对指纹模组手感进行测试。

Description

指纹模组及电子设备 技术领域
本申请涉及电子设备之指纹模组，特别涉及结合按键及指纹功能的指纹模组及电子设备。
背景技术
带按键的指纹识别模组能够实现按压指纹解锁及按键触发等多个拓展功能，在终端领域作为HOME键等应用日益广泛。为实现整机的精致度及指纹按键的按压手感，对结构设计提出新的挑战。对于指纹按键及按压手感而言，相关零件较多，组装繁琐，结构尺寸链较长导致手感不良，以及在整机组装前无法进行按压指纹按键的手感检测，日益成为设计瓶颈，现有技术常规设计方案很难满足项目需求。
发明内容
本申请实施例所要解决的技术问题在于：提供一种使产线组装精简且可以在组装前就能够对指纹模组手感进行测试的指纹模组。
第一方面，本申请提供一种指纹模组，包括指纹组件、按键组件、支架及弹性固定件，所述按键组件固定连接于所述指纹组件下表面，所述弹性固定件设置于所述指纹组件下表面，位于所述指纹组件和所述支架之间，所述弹性固定件包围所述按键组件，且所述弹性固定件弹性连接所述指纹组件与所述支架。所述按键组件与所述支架之间具有一间隙，所述指纹组件受到按压时，所述弹性固定件变形，所述间隙减小，所述按键组件与所述支架接触。本申请将指纹组件和按键组件集成在一个指纹模组中，通过弹性固定件将支架与指纹组件结合，这样指纹组件在未组装至电子设备中的时候，就可以先对按键组件的按压手感进行测试，确保测试良好的情况，再进行组装，而且，一体式的结构使得生产线组装过程也得到了精简，一体化的模组来料有利于减少指纹模组组装过程的相关零件，组装的时候直接将支架固定至触摸屏或者电池盖或后壳就可以了，而且，通过SMT制程工艺将按键组件装设在指纹组件上，使得按键组件与指纹组件之间无间隙，可以减少影响指纹按键是否卡键或按压虚位的尺寸。指纹组件通过其中的支架连接至电子设备中的触摸屏或者电池盖或后壳， 支架不但有安装固定的作用，支架还用于提供按压过程中，与按键组件接触，提供按键组件一个移动的行程，且给用户一个手感。
一种实施方式中，所述支架包括主体、固定边和连接臂，所述连接臂连接在所述主体和所述固定边之间，所述固定边用于与电子设备其它元件连接，所述主体与所述按键组件相对设置。本实施方式中，连接臂自所述主体的边缘朝向指纹组件的方向弯折，连接臂可以垂直于主体所在的表面，固定边自连接臂远离主体的边缘弯折，且固定边与主体分别位于连接臂的两侧。本实施方式，通过固定边与电子设备的触摸屏或者电池盖或后壳固定连接。所述支架可以通过钣金件一体成型制作。
具体而言，所述固定边设有溢胶槽，用于将所述支架通过点胶的方式固定连接至所述电子设备的其它元件(触摸屏或者电池盖或后壳)。点胶工艺不但有利于减少指纹模组与其它元件之间的安装间隙或公差，还可以借助密封胶的防水密封性能，提升指纹模组的防水密封性，提升使用寿命及安全性。
进一步而言，所述连接臂包围所述主体，并与所述主体共同形成收容空间，所述按键组件及所述弹性固定件均收容在所述收容空间中。也就是说，连接壁环绕呈环形结构，主体位于连接壁的底部，固定边形成在连接壁的顶部外侧。
一种实施方式中，所述支架为金属一体成型结构，所述主体之背离所述指纹组件的表面设有绝缘层。一种实施方式中，绝缘层为绝缘片，例如：麦拉(Mylar)片，通过备胶粘贴在主体表面，绝缘层也可以在主体的表面涂设绝缘涂层的方向形成。绝缘层的作用是使得支架与电子设备内部的电子元件或主板之间隔离，以防止静电穿过支架破坏电子元件或主板。
一种实施方式中，所述指纹组件包括电路板及设于所述电路板上的指纹识别芯片，所述指纹识别芯片之背离所述电路板的表面为所述触压面，所述电路板背离所述指纹识别芯片的表面为所述安装面(也就是下表面)，所述指纹模组还包括柔性电路板，所述柔性电路板一端电连接至所述电路板，所述按键组件通过所述电路板及所述柔性电路板电连接至电子设备中的主板上。本实施方式中，将指纹识别芯片和按键组件分别设置在电路板的两面，可以直接通过SMT工艺制作，从而，将指纹识别芯片和按键组件集成在一体。
所述支架设有出线口，所述出线口供所述柔性电路板从所述电路板处延伸至所述支架的外侧，所述出线口处填充密封材料，以使所述柔性电路板与所述 支架之间形成防水结构。具体而言，柔性电路板的用于连接在所述电路板和电子设备中的主板或其它电子元件之间，柔性电路板上设有用于驱动指纹识别芯片的驱动电路。
所述指纹组件还包括金属环，所述金属环设于所述指纹识别芯片的外围，部分所述金属环固定连接至所述电路板，部分所述金属环包覆所述指纹识别芯片之远离所述电路板一侧的边缘区域。金属环与电路板之间通过导电胶固定，使得金属环与电路板的地电连接。金属环不但可以保护指纹识别芯片边缘，还具装饰作用，而且也可以通过金属环吸收人体的静电，防止静电对指纹识别芯片的干扰和破坏。
所述弹性固定件为防水橡胶(rubber)，所述防水橡胶包围所述按键组件，所述防水橡胶与所述指纹组件之间及所述防水橡胶与所述支架之间均通过防水胶固定连接。所述弹性固定件的截面可以呈“几”字形或者“Z”字形。弹性固定件的一个端面通过防水胶固定在指纹组件之电路板表面。
具体而言，指纹模组大体呈圆盘状结构(不包括柔性电路板的部分)，其中的指纹组件呈圆盘状，弹性固定性呈环状。
第二方面，本申请还提供一种电子设备，包括上述任意一种实施方式所述的指纹模组。
本申请将指纹组件和按键组件通过弹性固定件与支架连接，从而使产线组装更为精简且可以在组装前对指纹模组手感进行测试。本申请之指纹模组应用在电子设备中，有利于电子设备轻薄化的发展，也为电子设备的组装带来简化，节约组装成本。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请一种实施方式提供指纹模组的立体示意图。
图2是图1所示的指纹模组安装在电子设备之触摸屏或者电池盖或后壳上的立体示意图。
图3是图1所示的指纹模组安装在电子设备之触摸屏或者电池盖或后壳上剖面图。
图4是图1所示的指纹模组安装在电子设备之触摸屏或者电池盖或后壳上的另一个方向的剖面图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1所示为本申请提供的一种指纹模组100，指纹模组100安装到电子设备200之触摸屏或者电池盖或后壳201上，如图2和图3所示。
请参阅图1、图2和图3，指纹模组100包括指纹组件10、按键组件20、支架30及弹性固定件40。
所述指纹组件10包括相背设置的触压面P及安装面S。一种实施方式中，所述指纹组件10包括电路板12及设于所述电路板12上的指纹识别芯片14，所述指纹识别芯片14之背离所述电路板12的表面为所述触压面P，所述电路板12背离所述指纹识别芯片14的表面为所述安装面S，所述安装面S为指纹组件的下表面。所述指纹模组10还包括柔性电路板15，所述柔性电路板15一端电连接至所述电路板12。具体而言，电路板12和指纹识别芯片14均呈圆盘装，指纹识别芯片14安装在电路板14中心。柔性电路板15的用于连接在所述电路板12和电子设备中的主板或其它电子元件之间，柔性电路板15上设有用于驱动指纹识别芯片的驱动电路，电路板12的靠近边缘的位置处设置连接器，柔性电路板15上亦设置与电路板12上的连接器相匹配的连接器，通过连接器相互配合实现柔性电路板15和电路板12之间的电连接。所述按键组件20通过所述电路板12及所述柔性电路板15电连接至电子设备中的主板上。按键组件20接受到按压力时发生移动，从而触发按键组件20内部的电路，实现按键功能。
所述指纹组件10还包括金属环16，所述金属环16设于所述指纹识别芯片14的外围，部分所述金属环16固定连接至所述电路板12，部分所述金属 环16包覆所述指纹识别芯片14之远离所述电路板12一侧的边缘区域。金属环16与电路板12之间通过导电胶固定，使得金属环16与电路板12的地端电连接。金属环16不但可以保护指纹识别芯片14边缘，还具装饰作用，而且也可以通过金属环16吸收人体的静电，防止静电对指纹识别芯片14的干扰和破坏。
所述按键组件20设置于所述安装面S(即指纹组件10的下表面)，本实施方式中，将指纹识别芯片14和按键组件20分别设置在电路板12的两面，可以直接通过SMT工艺制作，从而，将指纹识别芯片14和按键组件20集成为一体。所述按键组件20设置于电路板12的中心区域。
所述弹性固定件40连接于所述安装面S(即指纹组件10的下表面)与所述支架30之间，所述弹性固定件40包围所述按键组件20，具体而言，弹性固定件40以按键组件20为中心，且呈中心对称分布在按键组件20的外围。一种实施方式中，弹性固定件40可以呈环形一体式结构，按键组件20设置在弹性固定件40的中央；一种实施方式中，弹性固定件40可以包括多个弹性件，多个弹性件以按键组件20为中心，且呈中心对称分布在按键组件20的外围，此时弹性件可以为3个、4个或更多，只要对称分布在按键组件20的外围，保证按键组件20的底部被均匀支撑即可。所述支架30包括与所述按键组件相对设置的接触区31，按键组件20与支架30之间具有一间隙。所述触压面P受到按压力时，使得所述弹性固定件40变形，按键组件20与支架30之间的间隙减小，同时使得所述按键组件20与所述接触区31接触，支架30为刚性元件，按键组件20与所述接触区31接触的过程可以提供用户按压手感。
一种实施方式中，所述支架30包括主体32、固定边36和连接臂34，所述连接臂34连接在所述主体32和所述固定边36之间，所述固定边36用于与电子设备200其它元件连接，所述主体32与所述安装面S相对设置，本实施方式中，接触区31位于主体32的中心区域。本实施方式中，连接臂34自所述主体32的边缘朝向指纹组件10的方向弯折，连接臂34可以垂直于主体32所在的表面，固定边36自连接臂34远离主体32的边缘弯折，且固定边36与主体32分别位于连接臂34的两侧。本实施方式，通过固定边36与电子设备200的触摸屏、或电池盖、或后壳201固定连接(如图2和图3所示)。为了指纹模组100自身定位方便，例如可以在固定边36上增设辅助定位孔H(如 图1所示)，辅助定位孔H在指纹模组100组装时能够保证指纹组件10、按键组件20等的同心度。所述支架30可以通过钣金件一体成型制作，支架30也可以为塑胶件。
具体而言，请参阅图3，所述固定边36设有溢胶槽362，用于将所述支架30通过点胶的方式固定连接至所述电子设备200的其它元件201(触摸屏、或电池盖、或后壳)。点胶工艺不但有利于减少指纹模组100与其它元件之间的安装间隙或公差，还可以借助密封胶的防水密封性能，提升指纹模组100的防水密封性，提升使用寿命及安全性。
进一步而言，所述连接臂34包围所述主体32，并与所述主体32共同形成收容空间，所述按键组件20及所述弹性固定件40均收容在所述收容空间中。也就是说，连接壁34环绕呈环形结构，主体32位于连接壁34的底部，固定边36形成在连接壁34的顶部外侧。
一种实施方式中，所述支架30为金属一体成型结构，所述主体32之背离所述指纹组件10的表面设有绝缘层37，如图3所示。一种实施方式中，绝缘层37为绝缘片，例如：麦拉(Mylar)片，通过备胶粘贴在主体表面，绝缘层37也可以在主体32的表面涂设绝缘涂层的方向形成。绝缘层37的作用是使得支架30与电子设备内部的电子元件或主板之间隔离，以防止静电穿过支架30破坏电子元件或主板。
请结合图1和图3及图4，固定边36主体呈环形包围结构，溢胶槽362主体亦呈环形环绕槽，为了与电子设备形成连接通道，供柔性电路板15从所述电路板12处延伸至所述支架30的外侧，所述支架30设有出线口38，在出线口38对应位置处，形成与出线口38宽度相当的无溢胶槽362的平面固定边，以及稍低的连接臂34。柔性电路板15从出线口38穿过，通过导电胶18与固定边36固定，并通过密封材料17(例如PET膜片)粘结至电子设备200，以使所述柔性电路板15与所述支架30之间形成防水结构。
一种实施方式中，所述弹性固定件40为防水橡胶(rubber)，所述防水橡胶包围所述按键组件20，所述防水橡胶40与所述指纹组件10之间及所述防水橡胶40与所述支架30之间均通过防水胶固定连接。所述弹性固定件40的截面可以呈“几”字形或者“Z”字形。弹性固定件40的一个端面通过防水胶固定在指纹组件10之电路板12表面。
具体而言，指纹模组100大体呈圆盘状结构(不包括柔性电路板的部分)，其中的指纹组件10呈圆盘状，弹性固定性40呈环状。
本申请将指纹组件10和按键组件20集成在一个指纹模组100中，通过弹性固定件40将支架30与指纹组件10结合，这样指纹组件10在未组装至电子设备200中的时候，就可以先对按键组件20的按压手感进行测试，确保测试良好的情况，再进行组装，而且，一体式的结构使得生产线组装过程也得到了精简，一体化的模组来料有利于减少指纹模组100组装过程的相关零件，组装的时候直接将支架30固定至触摸屏或者电池盖或后壳就可以了，而且，通过SMT制程工艺将按键组件20装设在指纹组件10上，使得按键组件20与指纹组件10之间无间隙，可以减少影响指纹按键是否卡键或按压虚位的尺寸。指纹组件10通过其中的支架30连接至电子设备中的触摸屏或者电池盖或后壳。
本申请之指纹模组100应用在电子设备200中，有利于电子设备200轻薄化的发展，也为电子设备200的组装带来简化，节约组装成本。该电子设备例如可以为手机、平板电脑、笔记本电脑、UMPC(Ultra-mobile Personal Computer，超级移动个人计算机)、上网本、PDA(Personal Digital Assistant，个人数字助理)、工业设备等需要指纹识别的各种设备中。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种指纹模组，其特征在于，包括指纹组件、按键组件、支架及弹性固定件，
    所述按键组件固定连接于所述指纹组件下表面；
    所述弹性固定件设置于所述指纹组件下表面，位于所述指纹组件和所述支架之间，所述弹性固定件包围所述按键组件，且所述弹性固定件弹性连接所述指纹组件与所述支架；
    所述按键组件与所述支架之间具有一间隙；
    所述指纹组件受到按压时，所述弹性固定件变形，所述间隙减小，所述按键组件与所述支架接触。
  2. 如权利要求1所述的指纹模组，其特征在于，所述支架包括主体、固定边和连接臂，所述连接臂连接在所述主体和所述固定边之间，所述固定边用于与电子设备连接，所述主体与所述按键组件相对设置。
  3. 如权利要求2所述的指纹模组，其特征在于，所述固定边设有溢胶槽，用于将所述支架通过点胶的方式固定连接至所述电子设备。
  4. 如权利要求2或3所述的指纹模组，其特征在于，所述连接臂包围所述主体，并与所述主体共同形成收容空间，所述按键组件及所述弹性固定件均收容在所述收容空间中。
  5. 如权利要求2至4任意一项所述的指纹模组，其特征在于，所述支架为金属一体成型结构，所述主体之背离所述按键组件的表面设有绝缘层。
  6. 如权利要求1至5任意一项所述的指纹模组，其特征在于，所述指纹组件的下表面为电路板；所述指纹组件的上表面为指纹识别芯片，所述指纹模组还包括柔性电路板，所述柔性电路板一端电连接至所述电路板，所述按键组件通过所述电路板及所述柔性电路板电连接至所述电子设备中的主板上。
  7. 如权利要求6所述的指纹模组，其特征在于，所述支架设有出线口，所述出线口供所述柔性电路板从所述电路板处延伸至所述支架的外侧，所述出线口处填充密封材料，以使所述柔性电路板与所述支架之间形成防水结构。
  8. 如权利要求6或7所述的指纹模组，其特征在于，所述指纹组件还包括金属环，所述金属环设于所述指纹识别芯片的外围，部分所述金属环固定连 接至所述电路板，部分所述金属环包覆所述指纹识别芯片之远离所述电路板一侧的边缘区域。
  9. 如权利要求1至8任意一项所述的指纹模组，其特征在于，所述弹性固定件为防水橡胶，所述防水橡胶包围所述按键组件，所述防水橡胶与所述指纹组件之间及所述防水橡胶与所述支架之间均通过防水胶固定连接。
  10. 一种电子设备，其特征在于，包括如权利要求1至9任意一项所述的指纹模组。
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