CN210052174U

CN210052174U - Fingerprint module and intelligent terminal

Info

Publication number: CN210052174U
Application number: CN201920971513.5U
Authority: CN
Inventors: 倪银平; 邹聪了; 黄江; 丁国栋
Original assignee: Nanchang OFilm Biometric Identification Technology Co Ltd
Current assignee: Ofilm Microelectronics Technology Co ltd; Jiangxi OMS Microelectronics Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-02-11
Anticipated expiration: 2029-06-26

Abstract

The application relates to a fingerprint module and an intelligent terminal, wherein the fingerprint module comprises a lower cover, a substrate, a fingerprint chip and a light emitting source, wherein the lower cover is provided with an accommodating groove with an opening at the upper end; the substrate is at least partially accommodated in the accommodating groove, the substrate and the groove wall of the accommodating groove are spaced to form a light beam channel, the substrate comprises a first surface and a second surface which are arranged oppositely, and the first surface is positioned on one side of the substrate, which is far away from the lower cover; the fingerprint chip is arranged on the first surface and electrically connected with the substrate; the light source is arranged on the second surface and electrically connected with the substrate, and light beams emitted by the light source can be projected out of the accommodating groove through the light beam channel. This application fingerprint module has the function of luminous instruction, and when the fingerprint module was applied to intelligent terminal, intelligent terminal had the outward appearance result of use of dazzling cool more, has improved user's use and has experienced.

Description

Fingerprint module and intelligent terminal

Technical Field

The application relates to the technical field of fingerprint identification, especially relates to a fingerprint module and intelligent terminal.

Background

In the correlation technique, intelligent terminal such as smart mobile phone, panel computer installs the fingerprint module, and the fingerprint module is used for gathering user's fingerprint data to send user's fingerprint data to intelligent terminal's treater, thereby carry out user's fingerprint identification. However, when intelligent terminal used in the poor or dark environment of light, the user can't the visual observation fingerprint module, and the outward appearance display effect of fingerprint module is not good.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a fingerprint module and intelligent terminal to the not good problem of outward appearance display effect of fingerprint module.

A fingerprint module, comprising:

a lower cover provided with an accommodating groove with an opening at the upper end;

the substrate is at least partially accommodated in the accommodating groove, the substrate and the groove wall of the accommodating groove are spaced to form a light beam channel, the substrate comprises a first surface and a second surface which are arranged in a back-to-back manner, and the first surface is positioned on one side of the substrate, which is far away from the lower cover;

the fingerprint chip is arranged on the first surface and is electrically connected with the substrate; and

the light source is arranged on the second surface and electrically connected with the substrate, and light beams emitted by the light source can be projected out of the accommodating groove through the light beam channel.

Above-mentioned fingerprint module can be applied to intelligent terminal, fingerprint chip and light emitting source (for example breathing lamp) locate the two sides that the base plate carried on the back mutually, can the maximize utilize the installation space of base plate, avoid fingerprint chip and the mutual interference of light emitting source, the light beam that the light emitting source sent can shine the lower cover and throw outside the accepting groove through the light beam passageway, thereby the fingerprint module still has the function of luminous instruction, also the intelligent terminal has the button of luminous instruction, make intelligent terminal have the outward appearance that is dazzling more, user's use experience has been promoted. In addition, because fingerprint chip and light emitting source all integrate on the base plate for need not to establish the light emitting source in addition at intelligent terminal, thereby make intelligent terminal's structure compacter, overall design is more succinct, and it is more convenient to install.

In one embodiment, an avoiding hole is formed at the bottom of the accommodating groove, and a connector is arranged on the second surface and penetrates through the avoiding hole. So, when the fingerprint module was applied to intelligent terminal, the connector on the base plate can be through dodging hole and intelligent terminal's mainboard electric connection.

In one embodiment, the number of the light emitting sources is multiple, and the multiple light emitting sources are arranged around the center of the substrate at equal intervals. Thus, the light beam emitted by the luminous source can be uniform in brightness.

In one embodiment, the lower cover comprises a reflector, and the light beam emitted by the light source can be reflected by the reflector and projected by the light beam channel; or the lower cover is provided with a light guide layer in an attached mode, and light beams emitted by the light emitting sources can pass through the light guide layer and are projected out through the light beam channels. So, the lower cover has stronger light filling effect, and the leaded light effect is better, and indicating effect is better.

In one embodiment, the fingerprint module includes a protective cover plate, the protective cover plate includes a first cover plate, the first cover plate is provided with a through hole, the fingerprint chip is disposed in the through hole, the through hole is disposed corresponding to the opening of the receiving slot, so that the edge of the lower cover is connected to the inner surface of the first cover plate close to the lower cover, and the light beam emitted by the light source can be transmitted out of the protective cover plate through the light beam channel. So, can reduce the thickness of fingerprint module for the structure of fingerprint module is compacter.

In one embodiment, the substrate is at least partially received in the through hole, and the substrate is spaced apart from the hole wall of the through hole. So, further reduce the thickness of fingerprint module.

In one embodiment, a sealing cover plate is arranged on one side, away from the substrate, of the fingerprint chip, and the sealing cover plate is contained in the through hole and attached to the inner wall of the through hole. So, when the fingerprint module was applied to intelligent terminal, sealed apron can play waterproof dirt-proof effect to the fingerprint module.

In one embodiment, the protective cover plate comprises a second cover plate, and the second cover plate is attached to one side, away from the lower cover, of the first cover plate and covers the through hole. So, fingerprint module (fingerprint chip) is located the below of second apron to can realize hiding the effect of fingerprint module, improve the waterproof dustproof performance of fingerprint module.

In one embodiment, a light-transmitting layer is disposed on an inner surface of the first cover plate corresponding to the light beam channel, the light-transmitting layer is disposed around the through hole, and the light-transmitting layer is used for providing a channel through which the light beam emitted by the light source penetrates the protective cover plate; or a light-transmitting layer is arranged between the first cover plate and the second cover plate, corresponds to the light beam channel and surrounds the through hole, and the light-transmitting layer is used for providing a channel for the light beam emitted by the light source to penetrate through the protective cover plate. Therefore, the light beams emitted by the light emitting sources can be used for light emitting display in the area where the light transmitting layer is located.

In one embodiment, a silk-screen layer is arranged on the inner surface, corresponding to the light beam channel, of the first cover plate, and the silk-screen layer is adjacent to the light-transmitting layer and surrounds the through hole; or a silk-screen layer is arranged between the first cover plate and the second cover plate corresponding to the light beam channel, is adjacent to the euphotic layer and surrounds the through hole. So, can confirm the position of fingerprint module through the silk screen printing, convenience of customers discernment.

An intelligent terminal comprises the fingerprint module.

Above-mentioned intelligent terminal, fingerprint chip and light emitting source (for example breathing the lamp) are located the both sides that the base plate carried on the back mutually, can the maximize utilize the installation space of base plate, avoid fingerprint chip and light emitting source's mutual interference, the light beam that the light emitting source sent can shine the lower cover and project outside the accepting groove through the beam passage, thereby the fingerprint module still has the function of luminous instruction, also the intelligent terminal has the button that can give out light and instruct, make intelligent terminal have the cool outward appearance that dazzles more, user's use experience has been promoted. In addition, because fingerprint chip and light emitting source all integrate on the base plate for need not to establish the light emitting source in addition at intelligent terminal, thereby make intelligent terminal's structure compacter, overall design is more succinct, and it is more convenient to install.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent terminal according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the fingerprint module and the protective cover of FIG. 1;

fig. 3 is a schematic cross-sectional view of another embodiment of the connection between the fingerprint module and the protective cover plate at a position a in fig. 1.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, in an embodiment, a smart terminal 10 is described by taking a mobile phone as an example, and the smart terminal 10 includes a body 100 and a fingerprint module 300. The intelligent terminal 10 may also be an intelligent terminal such as a notebook computer, a tablet computer, a portable phone, a video phone, a digital still camera, an electronic book reader, a Portable Multimedia Player (PMP), a mobile medical device, a wearable device, and an intelligent door lock.

The body 100 is a mounting carrier of the fingerprint module 300, and the body 100 may be made of a metal material, such as aluminum, aluminum alloy, or stainless steel. In one embodiment, the smart terminal 10 includes a display screen 500 connected to the main body 100, the display screen 500 is used for displaying information, and the display screen 500 includes a displayable region including a flat area. The Display screen 500 may be a Liquid Crystal Display (LCD) or an Organic Light-emitting diode (OLED) Display screen. In an embodiment, the display screen 500 is a touch display screen, and a user can perform a touch operation on information displayed on the display screen 500 by a touch operation mode. In other embodiments, the display screen 500 may also be a non-touch display screen, and is only used for displaying information.

In one embodiment, the smart terminal 10 includes a protective cover 700 that covers the display screen 500. The protective cover 700 may be a cover glass. In one embodiment, the protective cover 700 includes a display area 710 and a non-display area 720, and the display screen 500 is disposed corresponding to the display area 710 so as to provide an image displayed on the display screen 500 to a user through the display area 710. The non-display area 720 is located at the periphery of the display area 710. In one embodiment, the non-display area 720 may be located at one side of the display area 710. It is understood that in other embodiments, the non-display area 720 may be disposed around the perimeter of the display area 710.

The fingerprint module 300 is disposed in the main body 100 and connected to the protective cover 700. In an embodiment, the fingerprint module 300 corresponds the setting of the non-display area 720 of protection apron 700 to the user can touch non-display area 720 and carry out fingerprint data's collection to the user through fingerprint module 300, and then fingerprint module 300 can send the fingerprint data of the user who gathers to intelligent terminal 10's treater.

In one embodiment, as shown in fig. 2, the fingerprint module 300 includes a substrate 310 and a fingerprint chip 320. The substrate 310 includes a first surface 311 and a second surface 312 which are opposite to each other, where the first surface 311 may be understood as an end surface of the substrate 310 facing the front surface of the smart terminal 10, and the front surface of the smart terminal 10 is an outer end surface, i.e., a display surface, of the protective cover 700. In one embodiment, the substrate 310 is a flexible circuit board. It is understood that in other embodiments, the substrate 310 is a rigid circuit board. The fingerprint chip 320 is disposed on the first surface 311 and electrically connected to the substrate 310, for example, the fingerprint chip 320 may be packaged on the substrate 310 in a Land Grid Array (LGA) manner. The fingerprint chip 320 is used for collecting fingerprint data of a user and sending the fingerprint data of the user to the processor of the intelligent terminal 100. In one embodiment, the fingerprint chip 320 may be a capacitive fingerprint chip, an ultrasonic fingerprint chip, an optical fingerprint chip, or the like.

The substrate 310 may be provided with components, such as a resistor 301, a capacitor 302, a transistor 303, or the like, for assisting the operation of the fingerprint chip 320. In one embodiment, the resistor 301 is disposed on the first surface 311 of the substrate 310, and the capacitor 302 and the transistor 303 are disposed on the second surface 312 of the substrate 310. In an embodiment, the second surface 312 is further provided with a connector 304 electrically connected to the main board of the smart terminal 10, so that the fingerprint chip 320 can transmit the collected fingerprint data of the user to the processor on the main board through the connector 304.

In an embodiment, the fingerprint module 300 includes the light emitting element 330, the light emitting element 330 and the substrate 310 electric connection, and the light beam that the light emitting element 330 sent can pass through the protection cover plate 700 and carry out the luminous instruction, so that the intelligent terminal 100 has a cool appearance display effect, and the use experience of the user is improved.

In one embodiment, the light emitting assembly 330 includes a bottom cover 331 and a light emitting source 332. The bottom cap 331 defines a receiving slot 3311 with an opening at an upper end thereof, the substrate 310 is at least partially received in the receiving slot 3311, the substrate 310 is spaced apart from a slot wall of the receiving slot 3311 to form a beam path 20, and the first surface 311 of the substrate 310 is located on a side of the substrate 310 away from the bottom cap 331. The light source 332 is electrically connected to the second surface 312 of the substrate 310, and a light beam emitted by the light source 332 can pass through the light beam channel 20 along the lower cover 331 and penetrate through the protective cover plate 700 to project outside the accommodating slot 3311, so as to perform a light emitting indication of the fingerprint module 300. In an embodiment, the lower cover 331 includes a reflective plate, and the lower cover 331 may be a reflective plate made of a bright surface material, for example, a reflective plate made of a metal material (gold or silver), and the reflective plate made of the bright surface material has a stronger light supplementing effect, a stronger reflective effect, and a better indication effect. In other embodiments, the lower cover 331 is attached with a light guide layer, which may be a light guide PC layer having a light transmittance of 90% or more and having a good guiding effect on the conducting direction of the light beam.

The lower cover 331 includes a first area 331a and a second area 331b connected to the first area 331 a. In an embodiment, the second area 331b is disposed around the first area 331a, and a circular beam channel 20 can be obtained, and the circular beam channel can be a rectangular ring, a square ring, a triangular ring, or other polygonal rings, and the like, without any limitation. The second area 331b is connected to the protective cover 700. The projection of the base plate 310 on the reference plane, which can be understood as a plane perpendicular to the thickness direction of the protective cover 700, coincides with the projection of the first area 331a on the reference plane. In one embodiment, the receiving slot 3311 may be opened in the first area 331a, and the receiving slot 3311 may be opened in both the first area 331a and a portion of the second area 331 b.

In an embodiment, the bottom of the receiving slot 3311 is formed with an avoiding hole 3312, so that the connector 304 disposed on the second surface 312 can penetrate through the avoiding hole 3312 to electrically connect with the motherboard of the intelligent terminal 10. In one embodiment, the avoiding hole 3312 is disposed at the center of the lower cover 331, and the light-emitting sources 332 are disposed around the connector 304, for example, the light-emitting sources 332 may be disposed at the left and right sides of the connector 304 shown in fig. 2.

In an embodiment, the light sources 332 include a plurality of LED breathing lamps, the breathing lamps may be arranged around the center of the substrate 310 at equal intervals, for example, the connector 304 is disposed at the center of the substrate 310, and the breathing lamps are arranged around the connector 304 at intervals, so as to ensure that the light beams emitted by the light sources are uniformly distributed after penetrating through the protective cover plate. The light emitting source is not limited to the LED breathing lamp, and the light emitting source 332 may be other light sources capable of emitting various colors. Of course, the number of the light emitting sources may be one, and one light emitting source is disposed near the connector.

In an embodiment, as shown in fig. 2, the protective cover 700 includes a first cover 700a, the first cover 700a has a through hole 701, the through hole 701 is disposed corresponding to the opening of the receiving slot 3311, so that the fingerprint chip 320 is disposed in the through hole 701, an edge of the lower cover 331 is connected to an inner surface of the first cover 700a close to the lower cover 331, for example, the edge of the lower cover 331 may be adhered to the inner surface of the first cover 700a by an adhesive (e.g., a double-sided tape). Thus, the installation space of the intelligent terminal 10 can be fully utilized, the thickness of the intelligent terminal 10 is reduced, and the structure of the intelligent terminal 10 is more compact. Note that the inner surface of the protective cover 700 is an end surface of the protective cover 700 facing the display screen 500.

In an embodiment, a sealing cover 340 may be disposed on a side of the fingerprint chip 320 away from the substrate 310, the sealing cover 340 may be attached to the fingerprint chip 320 by thermal compression, and the sealing cover 340 is accommodated in the through hole 701 and attached to an inner wall of the through hole 701. In one embodiment, the substrate 310 is at least partially received in the through hole 701, so as to further reduce the thickness of the smart terminal 10. In an embodiment, the substrate 310 and the hole walls of the through holes 701 are spaced from each other, so that the substrate 310 can be mounted in the through holes 701, and the space where the through holes 701 are located can be filled with glue through the gap between the substrate 310 and the hole walls of the through holes 701, so as to form a glue filling layer (not shown) for packaging the fingerprint chip 320 and the substrate 310, wherein the glue filling layer can reinforce and support the whole fingerprint module 300.

During the concrete encapsulating operation, should install base plate 310, fingerprint chip 320 and sealed apron 340 in the through-hole 701 and be connected with protection apron 700 earlier, the overall structure after will connecting again stands upside down, also makes sealed apron 340 be located the below of base plate 310 and fingerprint chip 320, and then can see through the clearance between the pore wall of base plate 310 and through-hole 701 and carry out the encapsulating to the space of through-hole 701, form the encapsulating layer of encapsulation fingerprint chip 320 and base plate 310, the encapsulating layer can extend and fill up the clearance between base plate 310 and protection apron 700.

In an embodiment, as shown in fig. 3, the protective cover 700 includes a first cover 700a and a second cover 700b, the through hole 701 is opened in the first cover 700a, and the second cover 700b is attached to the first cover 700a and covers the through hole 701. The second area 331b is connected to a side of the first cover plate 700a away from the second cover plate 700b, that is, an edge of the lower cover 331 is connected to a side of the first cover plate 700a away from the second cover plate 700 b. The second cover plate 700b and the first cover plate 700a can be attached to each other through OCA optical cement, and the second cover plate 700b and the first cover plate 700a can also be welded and attached together. Therefore, the fingerprint module 300 (fingerprint chip 320) is located below the second cover plate 700b, so that the effect of hiding the fingerprint module 300 can be realized, the through holes penetrating through the two opposite ends of the protective cover plate 700 are prevented from being formed in the protective cover plate 700, and the waterproof and dustproof performance of the fingerprint module 300 is improved. It is understood that, in other embodiments, the first cover plate 700a and the second cover plate 700b may also be integrally formed, in which case, the protective cover plate 700 is a single plate, and the through hole 701 is a blind hole opened on the protective cover plate 700, penetrating through the first cover plate 700a, and not extending to the second cover plate 700 b.

In one embodiment, the first cover plate 700a has a thickness of 0.5mm to 1.5mm, and the second cover plate 700b has a thickness of 0.05mm to 0.2 mm. In one embodiment, the first cover plate 700a has a thickness of 1.1mm, and the second cover plate 700b has a thickness of 0.175 mm. Thus, on the premise that the protective cover 700 has sufficient structural strength, the distance between the fingerprint chip 320 and the outer surface of the second cover 700b is short, so that when a user touches the second cover 700b, the fingerprint chip 320 will have a more sensitive response to the user's touch.

In an embodiment, a light-transmitting layer 702 is disposed on an inner surface of the first cover plate 700a corresponding to the light beam channel 20, the light-transmitting layer 702 is disposed around the through hole 701, and the light-transmitting layer 702 is used for providing a channel for light beams emitted from the light-emitting source 332 to penetrate through the protective cover plate 700. In one embodiment, the transparent layer 702 may be a silk-screen ink layer, such as an IR ink layer, which has a semi-hidden property, that is, the light beam emitted from the light source 332 can penetrate through the IR ink layer through the light beam channel 20 and perform a light emitting indication, and when no light beam irradiates the IR ink layer, that is, when the light source 332 does not emit light, the IR ink layer is black and does not indicate. It is understood that in other embodiments, the light transmissive layer 702 may also be disposed between the first cover sheet 700a and the second cover sheet 700 b.

In one embodiment, the inner surface of the first cover plate 700a corresponding to the beam channel 20 is provided with a silk-screen 703 layer. In other embodiments, the silk-screen layer 703 may also be disposed between the first cover plate 700a and the second cover plate 700 b. The silk-screen layer 703 is disposed adjacent to the light-transmissive layer 702 and surrounds the through hole 701. For example, silk-screen layer 703 may be disposed on the inner side of light-transmissive layer 702, and silk-screen layer 703 may also be disposed on the outer side of light-transmissive layer 702. So, when fingerprint module 300 need not give out light and instruct, can confirm fingerprint module 300's position through silk screen 702, convenience of customers discernment, and can also save the luminous required electric quantity of fingerprint module 300. The silk screen 702 may be formed on the inner surface of the protective cover 700 by printing, the material of the silk screen 702 may be graphite, and the color of the silk screen 702 may be determined according to the use requirement of the user, such as white, silver, and the like, and is not limited herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a fingerprint module which characterized in that includes:

2. The fingerprint module of claim 1, wherein an avoiding hole is formed at a bottom of the accommodating groove, and the second surface is provided with a connector penetrating through the avoiding hole.

3. The fingerprint module of claim 1, wherein the number of the light sources is plural, and the plural light sources are arranged around the center of the substrate at equal intervals.

4. The fingerprint module of claim 1, wherein the bottom cover comprises a reflector, and the light beam emitted by the light source can be reflected by the reflector and projected by the light beam channel; or the lower cover is provided with a light guide layer in an attached mode, and light beams emitted by the light emitting sources can pass through the light guide layer and are projected out through the light beam channels.

5. The fingerprint module of claim 1, wherein the fingerprint module includes a protective cover plate, the protective cover plate includes a first cover plate, the first cover plate has a through hole, the through hole is disposed corresponding to the opening of the receiving slot, so that the fingerprint chip is disposed in the through hole, an edge of the lower cover is connected to an inner surface of the first cover plate near the lower cover, and a light beam emitted by the light source can be transmitted out of the protective cover plate through the light beam channel.

6. The fingerprint module of claim 5, wherein the substrate is at least partially received in the through hole and is spaced apart from a wall of the through hole; and/or

One side of the fingerprint chip, which is far away from the substrate, is provided with a sealing cover plate, and the sealing cover plate is contained in the through hole and is attached to the inner wall of the through hole.

7. The fingerprint module of claim 5, wherein the protective cover comprises a second cover, and the second cover is attached to the first cover on a side away from the lower cover and covers the through hole.

8. The fingerprint module of claim 7, wherein the first cover plate has a light-transmitting layer disposed on an inner surface thereof corresponding to the light beam channel, the light-transmitting layer surrounds the through hole, and the light-transmitting layer is configured to provide a light beam emitted by the light source to penetrate through the channel of the protective cover plate; or

A light-transmitting layer is arranged between the first cover plate and the second cover plate, corresponds to the light beam channel and surrounds the through hole, and the light-transmitting layer is used for providing a channel for the light beam emitted by the light source to penetrate through the protective cover plate.

9. The fingerprint module of claim 8, wherein the first cover plate is provided with a silk-screen layer corresponding to the inner surface of the light beam channel, and the silk-screen layer is adjacent to the light-transmitting layer and surrounds the through hole; or a silk-screen layer is arranged between the first cover plate and the second cover plate corresponding to the light beam channel, is adjacent to the euphotic layer and surrounds the through hole.

10. An intelligent terminal, characterized in that it comprises a fingerprint module according to any one of claims 1 to 9.