CN216434980U

CN216434980U - Fingerprint identification device and terminal equipment thereof

Info

Publication number: CN216434980U
Application number: CN202122604971.5U
Authority: CN
Inventors: 江波; 王海生
Original assignee: Beijing Jihao Technology Co Ltd
Current assignee: TIANJIN JIHAO TECHNOLOGY CO LTD
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-05-03
Anticipated expiration: 2031-10-27

Abstract

The utility model provides a fingerprint identification device and a terminal device thereof, wherein the fingerprint identification device comprises a fingerprint identification module which comprises an acquisition unit and a fingerprint identification chip which are packaged integrally; the circuit board assembly is electrically connected with the fingerprint identification module; at least part of fingerprint identification module passes through the installation space that circuit board assembly set up the fixed frame formation at terminal equipment to make the fingerprint identification module be located the below of terminal equipment's display screen, thereby realize fingerprint identification device's miniaturization, and then reduce terminal equipment's complete machine space occupancy, thereby realize terminal equipment's miniaturization and lightweight.

Description

Fingerprint identification device and terminal equipment thereof

Technical Field

The utility model relates to a fingerprint identification technical field particularly, relates to a fingerprint identification device and terminal equipment thereof.

Background

Present fingerprint identification scheme is with optics or ultrasonic fingerprint identification module setting under the display screen to realize fingerprint identification under the screen.

But the fingerprint identification module that present fingerprint identification scheme adopted all is the packaging mode of fingerprint acquisition unit and fingerprint identification chip separation, what adopt promptly is traditional RW encapsulation chip, and the fingerprint identification module of packaging mode makes the setting in terminal equipment like this, has taken terminal equipment's great installation space to make can not satisfy the miniaturized demand of device.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a fingerprint identification device and terminal equipment thereof for solve above-mentioned problem.

In a first aspect, the present invention provides a fingerprint identification device, including: the fingerprint identification module comprises an acquisition unit and a fingerprint identification chip which are integrally packaged; the circuit board assembly is electrically connected with the fingerprint identification module; at least part of fingerprint identification module passes through circuit board assembly sets up the installation space that forms at terminal equipment's fixed frame, and makes the fingerprint identification module is located the below of terminal equipment's display screen.

In the fingerprint identification device of the above design, because the fingerprint identification module in the fingerprint identification device adopts the acquisition unit and the fingerprint identification chip which are integrally packaged, the designed fingerprint identification module is more miniaturized compared with the fingerprint identification module which is separated from the fingerprint identification chip by the current fingerprint acquisition unit, so that the whole machine space of the terminal equipment is occupied when the fingerprint identification module is applied to the terminal equipment; in addition, this scheme sets up the fingerprint identification module of design in the installation space that the fixed frame of terminal equipment formed through circuit board assembly for the fingerprint identification module of design is assembled in the space of utilizing terminal equipment display screen and fixed frame thickness, thereby has utilized terminal equipment's assembly space more rationally and effectively, realizes the installation of no occupancy of fingerprint identification module basically.

In an optional implementation manner of the first aspect, the fingerprint identification module includes an acquisition unit and a fingerprint identification chip, and the acquisition unit and the fingerprint identification chip are integrally packaged; or, the fingerprint identification module comprises an acquisition unit and a plurality of fingerprint identification chips, the acquisition unit and the plurality of fingerprint identification chips are integrally packaged, wherein the plurality of fingerprint identification chips share the acquisition unit; or, the fingerprint identification module includes the collection unit and the fingerprint identification chip of a plurality of integrative encapsulation.

In the embodiment of above-mentioned design, the integrative collection unit and the fingerprint identification chip of encapsulation of fingerprint identification module of this scheme design to make fingerprint identification module more miniaturized and integrated.

In an alternative embodiment of the first aspect, the circuit board assembly comprises: the flexible printed circuit board is arranged on the upper side of the flexible printed circuit board; or, the circuit board assembly comprises a printed circuit board; or, the circuit board assembly comprises a rigid-flexible circuit board.

In an optional implementation manner of the first aspect, the fingerprint identification module includes an acquisition unit and a fingerprint identification chip which are integrally packaged at a chip level.

In the embodiment of above-mentioned design, the fingerprint identification module is the integrative collection unit and the fingerprint identification chip of encapsulation of chip level to make the fingerprint identification module of design more miniaturized.

In an optional implementation manner of the first aspect, an electrical connection layer is disposed between the fingerprint identification module and the circuit board assembly, and the electrical connection layer is a surface mount technology solder or an anisotropic conductive adhesive layer.

In the embodiment of above-mentioned design, fingerprint identification module and circuit board subassembly pass through surface mounting technology soldering or anisotropic conducting resin layer electric connection to make fingerprint identification device's processing procedure simple process, volume production maneuverability is high.

In a second aspect, the present application provides a terminal device, including: a display screen; the fixing frame is provided with an installation space; and; a fingerprint identification device as described in any one of the optional embodiments of the first aspect; at least part of fingerprint identification module is passed through circuit board subassembly sets up installation space to make the fingerprint identification module is located the below of display screen.

In the terminal device designed above, because the terminal device employs the fingerprint identification device described in the first embodiment, the fingerprint identification device applied to the terminal device is more miniaturized compared with the existing fingerprint identification device, and thus the whole machine space occupied by assembling the fingerprint identification device is smaller; in addition, among the terminal equipment of this scheme design, set up installation space on fixed frame, the fingerprint identification module passes through circuit board components and sets up at this installation space, and set up the fingerprint identification module in the below of display screen through fixed frame, make the terminal equipment of design utilize the installation space of display screen and fixed frame's thickness to assemble the fingerprint identification module of design, thereby more rationally and effectively utilize terminal equipment's assembly space, thereby realize more lightweight and miniaturized and have the terminal equipment's of fingerprint identification module design.

In an optional embodiment of the second aspect, the fixing frame is provided with a groove, the installation space is located in the groove, the lower surface of the circuit board assembly is fixed at the bottom of the groove, and at least part of the fingerprint identification module is arranged in the groove through the circuit board assembly.

In the embodiment of the above design, this scheme only needs to set up a recess in the fixed frame of the terminal equipment of design, sets up this fingerprint identification module in this recess to make the fingerprint identification device of design can use in terminal equipment through such simple and easy mode, thereby make the terminal equipment who has the fingerprint identification module of design simpler.

In an optional implementation manner of the first aspect, the fixed frame is provided with an opening, the installation space is located in the opening, a part of the fixed frame, where the opening is formed, extends to the center of the opening to form a platform, the circuit board assembly is connected with the platform, and at least a part of the fingerprint identification module is arranged in the opening through the circuit board assembly.

In an alternative embodiment of the first aspect, the platform is formed at an upper portion of the fixed frame, and an upper surface of the circuit board assembly is connected to a lower surface of the platform.

In the embodiment of above-mentioned design, this scheme sets up the trompil on fixed frame's local area and sets up the platform on the upper portion of seting up the fixed frame of trompil, and then is connected with the platform through circuit board components to set up the fingerprint identification module in the trompil, thereby effectively utilized terminal equipment's fixed frame's thickness as installation space, and then realized terminal equipment's miniaturization and lightweight.

In an optional implementation manner of the first aspect, the terminal device further includes a first support, the first support is disposed on the periphery of the side wall of the fingerprint identification module, a lower end of the first support is connected to the upper surface of the circuit board assembly, and an upper end of the first support is connected to the lower surface of the platform.

In the embodiment of above-mentioned design, this scheme sets up the trompil and sets up the platform on the upper portion of seting up the fixed frame of trompil at fixed frame's local area, and then through first leg joint circuit board subassembly and platform to make the fingerprint identification module set up in the trompil, and then accomplish fingerprint identification module and fixed frame's being connected through simple and easy support, thereby can accomplish through solving being connected of first support and platform when changing the fingerprint identification module, realize simply changing.

In an alternative embodiment of the first aspect, at least one side of the circuit board assembly has a length greater than an aperture diameter of a platform hole formed around the platform.

In an alternative embodiment of the first aspect, the upper portion of the platform is provided as an inclined surface, and the upper aperture of the platform hole is larger than the lower aperture.

In the embodiment of above-mentioned design, the upper portion aperture that the platform surrounds the platform hole that forms is greater than the lower part aperture for the upper portion of platform forms the inclined plane, thereby increases the field of vision scope that the fingerprint identification module was gathered.

In an alternative embodiment of the first aspect, the platform is formed at a lower portion of the fixed frame, and the terminal device further includes a second bracket through which the circuit board assembly is connected to the platform.

In an optional implementation manner of the first aspect, the second bracket includes a recessed area, the recessed area is located in a platform hole formed around the platform, and the fingerprint identification module is disposed on an upper surface of the recessed area through the circuit board assembly.

In the embodiment of the design, the opening is formed in the fixed frame, the platform is arranged on the lower portion of the fixed frame with the opening, the fingerprint identification device is supported by the second support and is connected with the platform through the second support, so that the second support is supported by the platform, the fingerprint identification device is arranged in the installation space, and in addition, when the fingerprint identification device is replaced, only the connection between the second support and the platform needs to be solved, so that the simple replacement is realized; and when fixed frame's thickness is not enough, in this scheme, can be through the sunken degree of depth that increases the second support to increase fingerprint identification device's accommodation space, and then avoid fingerprint identification device to influence the fixed frame and be connected with the display screen.

In an alternative embodiment of the first aspect, the lower surface of the display screen is spaced from the bottom of the circuit board by 0 to 5 mm.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a first structural diagram of a fingerprint identification device according to an embodiment of the present invention;

fig. 2 is a second structural diagram of a fingerprint identification device according to an embodiment of the present invention;

fig. 3 is a third structural diagram of a fingerprint identification device according to an embodiment of the present invention;

fig. 4 is a fourth structural diagram of a fingerprint identification device according to an embodiment of the present invention;

fig. 5 is a fifth structural diagram of a fingerprint identification device according to an embodiment of the present invention;

fig. 6 is a sixth structural diagram of a fingerprint identification device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present invention.

Icon: a-a terminal device; 1-fingerprint recognition means; 2-a display screen; 3-fixing the frame; 10-fingerprint identification module; 101-an acquisition unit; 102-a fingerprint identification chip; 20-a circuit board assembly; 30-an electrical connection layer; 301-installation space; 302-a groove; 303-opening a hole; 304-a platform; 3041-platform holes; 40-a first support; 50-a second scaffold; 501-recessed area.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Biometric identification technology has been widely applied to various terminal devices or electronic apparatuses. Biometric identification techniques include, but are not limited to, fingerprint identification, palm print identification, vein identification, iris identification, face identification, biometric identification, anti-counterfeiting identification, and the like. Among them, fingerprint recognition generally includes optical fingerprint recognition, capacitive fingerprint recognition, and ultrasonic fingerprint recognition. With the rise of the full screen technology, the fingerprint identification module can be arranged in a local area or a whole area below the display screen, so that Under-screen (Under-display) optical fingerprint identification is formed; or, can also be with inside partly or the whole display screen that integrates to electronic equipment of optical fingerprint identification module to form the optical fingerprint identification In-screen (In-display). The Display screen may be an Organic Light Emitting Diode (OLED) Display screen or a Liquid Crystal Display (LCD) screen, or the like. Fingerprint identification methods generally include the steps of fingerprint image acquisition, preprocessing, feature extraction, feature matching, and the like. Part or all of the steps can be realized by a traditional Computer Vision (CV) algorithm, and also can be realized by an Artificial Intelligence (AI) based deep learning algorithm. The fingerprint identification technology can be applied to portable or mobile terminals such as smart phones, tablet computers and game equipment, and other electronic equipment such as smart door locks, automobiles and bank automatic teller machines, and is used for fingerprint unlocking, fingerprint payment, fingerprint attendance, identity authentication and the like.

First embodiment

The utility model provides a fingerprint identification device, as shown in figure 1, this fingerprint identification device 1 includes fingerprint identification module 10 and circuit board assembly 20, this

circuit board assembly

20 and 10 electric connection of this fingerprint identification module, this fingerprint identification module 10 includes the collection unit 101 and the fingerprint identification chip 102 of integrative encapsulation, the light signal guide to fingerprint identification chip 102 after collection unit 101 reflects the fingerprint, fingerprint identification chip 102 carries out photoelectric conversion to the light signal, the formation of image obtains the fingerprint image, the fingerprint image is used for carrying out fingerprint identification or live body anti-fake. As a possible implementation, the acquisition unit 101 may include: semiconductor optical devices, for example, may include optical wafer mirrors formed using semiconductor processes.

In the case that the fingerprint identification device 1 designed as above is applied to a terminal device, as shown in fig. 2, at least a portion of the fingerprint identification module 10 is disposed in the installation space 301 formed by the fixing frame 3 of the terminal device through the circuit board assembly 20, and the fingerprint identification module 10 is located below the display screen 2 of the terminal device.

In the fingerprint identification device of the above design, because the fingerprint identification module 10 in the fingerprint identification device adopts the acquisition unit 101 and the fingerprint identification chip 102 which are integrally packaged, the fingerprint identification module 10 is more miniaturized relative to the fingerprint identification module which is separated from the current fingerprint acquisition unit and the fingerprint identification chip, and the whole space of the terminal equipment is occupied when the fingerprint identification module is applied to the terminal equipment; in addition, this scheme sets up the fingerprint identification module 10 of design in the installation space that the fixed frame of terminal equipment formed through circuit board components 20 for the fingerprint identification module 10 of design is assembled in the space of utilizing terminal equipment display screen and fixed frame thickness, thereby has utilized terminal equipment's assembly space more rationally and effectively, realizes fingerprint identification module 10's installation of no occupancy basically.

As a possible implementation manner, the fingerprint identification module 10 may include an acquisition unit 101 and a fingerprint identification chip 102, and the acquisition unit 101 and the fingerprint identification chip 102 are integrally packaged.

In this embodiment, the fingerprint identification module 10 can be a fingerprint identification array besides the single fingerprint identification module, and when the fingerprint identification module 10 is the fingerprint identification array, as a possible implementation manner, the fingerprint identification module 10 can include an acquisition unit 101 and a plurality of fingerprint identification chips 102, the acquisition unit 101 and the plurality of fingerprint identification chips 102 are integrally packaged, wherein the plurality of fingerprint identification chips 102 can share the acquisition unit 101.

In the case that the fingerprint identification module 10 is a fingerprint identification array, in another possible implementation, the fingerprint identification module 10 may include a plurality of integrally packaged collecting units 101 and a fingerprint identification chip 102. In another possible embodiment, the fingerprint identification module 10 includes a plurality of sub-modules, each of which includes an acquisition unit 101 and a fingerprint identification chip 102.

In an optional implementation manner of this embodiment, the foregoing describes that the collecting unit 101 and the fingerprint identification Chip 102 in the fingerprint identification module 10 are integrally packaged, and as a possible implementation manner, the collecting unit 101 and the fingerprint identification Chip 102 in the fingerprint identification module 10 may be integrally packaged in a Chip Scale Package (CSP) manner; as another possible implementation manner, the collecting unit 101 and the fingerprint identification Chip 102 in the fingerprint identification module 10 may be integrally packaged in a wafer level (CCC) packaging manner, and the collecting unit 101 is integrated on the fingerprint identification Chip 102 in such an integral packaging manner, so as to achieve the purpose of miniaturization of the packaged fingerprint identification module 10.

In an optional implementation manner of this embodiment, as a possible implementation manner, the fingerprint identification module 10 is electrically connected to the circuit board assembly 20, and as shown in fig. 2, an electrical connection layer 30 is provided between the fingerprint identification module 10 and the circuit board assembly 20, so as to achieve electrical communication between the fingerprint identification module 10 and the circuit board assembly 20. The electrical connection layer 30 may be Surface Mount Technology (SMT) solder; the electrical connection layer 30 may also be an Anisotropic Conductive Film (ACF), in which the specific electrical connection manner may be changed according to actual requirements.

In the above embodiment, the fingerprint identification module 10 and the circuit board assembly 20 are electrically connected directly by the SMT process or the ACF method, so that the fingerprint identification device 1 has a simple manufacturing process and high mass production operability.

As a possible embodiment, the Circuit Board assembly 20 may be a Printed Circuit Board (PCB); as another possible embodiment, the circuit board assembly 20 may also be a rigid-flex circuit board; as another possible embodiment, the Circuit board assembly 20 may also be a Flexible Printed Circuit (FPC) and a steel sheet disposed under the FPC. It should be noted here that, in the case where the circuit board assembly 20 is a circuit board in which an FPC is combined with a steel sheet disposed below the FPC, the steel sheet disposed below the FPC may provide support for the FPC. Wherein the actual choice of circuit board assembly 20 may vary depending on the environment of use and requirements.

Second embodiment

As shown in fig. 3, the terminal device a includes a display 2, a fixed frame 3, and the fingerprint identification apparatus 1 described in the first embodiment, where the display 2 may be an organic light emitting diode screen or other display screen having a display area, and as an implementation manner, the display 2 may be a mobile phone screen, and of course, the display may also be a screen of other terminal devices, such as a screen of a tablet computer or a screen of a notebook computer.

This fixed frame 3 specifically can be terminal equipment's center, this terminal equipment's center is in the terminal equipment for setting up in the middle of display screen and the terminal equipment back lid and be used for bearing the frame of inside various subassemblies, this center has certain thickness, this embodiment has seted up an installation space 301 on this terminal equipment's fixed frame 3, the at least part of fingerprint identification module 10 passes through circuit board subassembly 20 and sets up at installation space 301, the fingerprint identification module 10 that sets up at installation space 301 is located the below of display screen 2, the collection unit 101 of fingerprint identification module 10 is towards this display screen 2, thereby form the collection region on the display region of display screen 2, when user's finger placed the collection region on display screen 2, user's fingerprint and discernment to user's fingerprint can be gathered to fingerprint identification module 10. Under the condition that fingerprint collection is needed, the collection area can be displayed in a highlight state, so that a user is reminded to place a finger in the collection area; of course, the user may be prompted to place the finger by other prompting methods without highlighting the finger.

In the terminal device designed above, because the terminal device adopts the fingerprint identification device 1 described in the first embodiment, the fingerprint identification device 1 applied to the terminal device is more miniaturized compared with the existing fingerprint identification device, so that the whole machine space occupied by assembling the fingerprint identification device is smaller; in addition, among the terminal equipment of this scheme design, set up installation space 301 on fixed frame 3, fingerprint identification module 10 passes through circuit board components 20 and sets up at this installation space 301, and set up fingerprint identification module 10 in the below of display screen 2 through fixed frame 3, make the terminal equipment of design utilize the installation space of the thickness of display screen 2 and fixed frame 3 to assemble the fingerprint identification module 10 of design, thereby more rationally and effectively utilize terminal equipment's assembly space, thereby realize more lightweight and miniaturized and have the terminal equipment's of fingerprint identification module design.

The following explanation of the assembly condition of the fingerprint identification device 1 in the terminal device is given by taking the structure of the fingerprint identification module 10 as the single acquisition unit 101 and the single fingerprint identification chip 102 as an example.

As a possible implementation manner, as shown in fig. 4, a groove 302 is formed in a partial region of the fixing frame 3, the mounting space 301 is located in the groove 302, and the lower surface of the circuit board assembly 20 is fixed to the bottom of the groove 302, so that at least a portion of the fingerprint identification module 10 is disposed in the groove 302 through the circuit board assembly 20. Under the condition that the depth of the groove 302 is enough, the fingerprint identification module 10 can be arranged in the groove 302 except at least part of the groove; in the case where the depth of the groove 302 is not sufficient or the height of the fingerprint recognition module 10 exceeds the groove 302, the fingerprint recognition module 10 is disposed in a gap between the display screen 2 and the fixing frame 3 except at least a portion thereof.

In the above-mentioned assembling manner, the collecting unit 101 of the fingerprint identification module 10 faces the lower surface of the display screen 2 through the opening of the groove 302, so as to form a collecting area on the display area of the display screen 2.

In addition, in the present embodiment, the lower surface of the circuit board assembly 20 and the bottom of the groove 302 may be connected by various methods including, but not limited to, glue film, foam, or soldering, and the specific connection method may be changed as required.

The fixed frame 3 of the above design can change the distance between the fingerprint identification module 10 and the display screen 2 by changing the depth of the groove 302, for example, when the acquisition unit 101 in the fingerprint identification module 10 is closer to the lower surface of the display screen 2, the depth of the groove can be properly reduced, so that the distance between the acquisition unit 101 of the fingerprint identification module 10 and the lower surface of the display screen 2 is reduced; when the lower surface that needs collection unit 101 in the fingerprint identification module 10 and display screen 2 is farther away from, can suitably increase the degree of depth of recess 302 to increase the interval of the lower surface of collection unit 101 and display screen 2.

In the above-mentioned embodiment of design, this scheme only needs to set up a recess 302 in the fixed frame 3 of the terminal equipment of design, sets up this fingerprint identification subassembly 10 in this recess 302 to make the fingerprint identification device 1 of design can use in terminal equipment through such simple and easy mode, thereby make the terminal equipment that has fingerprint identification module 10 of design more simplistic.

As another possible embodiment, the present solution may be that an opening 303 is formed in a partial region of the fixing frame 3, the mounting space 301 is located in the opening 303, a portion of the fixing frame 3 where the opening 303 is formed extends toward a center of the opening to form a platform 304, the circuit board assembly 20 is connected to the platform 304, and at least a portion of the fingerprint identification module 10 is disposed in the opening 303 through the circuit board assembly 20, as a possible embodiment, the platform 304 where the opening 303 extends toward the center of the opening may be distributed on an upper portion of the fixing frame 2 where the opening 303 is formed, so as to form a countersunk shape like that shown in fig. 5. Here, the upper portion of the fixing frame 3 having the opening 303 may be an upper end portion of the fixing frame 3 having the opening 303, or may be a portion of the fixing frame 3 having the opening 303, which is biased toward an upper end position rather than an end portion.

As a possible implementation manner, on the basis of the installation space 301 designed as above, as shown in fig. 5, the present solution may directly connect the upper surface of the circuit board assembly 20 with the lower surface of the platform 304, so that at least a portion of the fingerprint identification module 10 is disposed in the opening 303 through the circuit board assembly 20, wherein the direct connection manner between the upper surface of the circuit board assembly 20 and the lower surface of the platform 304 may be bonding or welding.

In the embodiment of the above design, this scheme sets up trompil 303 on the local area of fixed frame 3 and sets up platform 304 on the upper portion of the fixed frame 3 who offers trompil 303, and then the lower surface lug connection through upper surface and platform 304 of circuit board assembly 20 to make fingerprint identification module 10 set up in trompil 303 through circuit board assembly 20, this scheme utilizes among the fingerprint identification device to have circuit board assembly 20 to accomplish and be connected with installation space 301, and then practice thrift the cost and reduce the installation complexity.

As another possible embodiment, in the case that the platform is formed on the upper portion of the fixing frame 3 with the opening 303, as shown in fig. 6, the terminal device of the present design may further include a first support 40, the first support 40 is disposed on the periphery of the sidewall of the fingerprint identification module 10, the lower end of the first support 40 is connected to the upper surface of the circuit board assembly 20, and the upper end of the first support 40 is connected to the lower surface of the platform 304, so that at least a portion of the fingerprint identification module 10 is erected in the opening 303 through the first support 40. The material of the first bracket 40 may be any one of metal, resin, plastic, and the like, and the material and insulating property of the first bracket 40 may be changed according to the use environment and the demand.

The lower end of the first bracket 40 and the upper surface of the circuit board assembly 20 may be connected by soldering, or may be connected by other methods, such as bonding; the upper end of the first bracket 40 and the lower surface of the platform 304 may be connected by means of an adhesive, or may be connected by other means, such as welding; and the upper end of first support 40 is connected through the mode that the laminating was glued with the lower surface of platform 304, can be so that the terminal equipment of design under the condition that needs change fingerprint identification module 10, only need break off the upper end of first support 40 and be connected with the lower surface of platform 304 can to realize the simple and easy change of fingerprint identification module 10.

In the above-mentioned connection embodiment who adopts first support 40, the interval of fingerprint identification module 10 for display screen 2 can be adjusted to the first support 40 of this scheme optional co-altitude not.

In the embodiment of above-mentioned design, this scheme sets up trompil 303 and sets up platform 304 on the upper portion of seting up the fixed frame 3 of trompil 303 at the local area of fixed frame 3, and then connect circuit board components 20 and platform 304 through first support 40, thereby make fingerprint identification module 10 set up in trompil 303, and then accomplish being connected of fingerprint identification module 10 and fixed frame 3 through simple and easy support, thereby can accomplish through solving being connected of first support 40 and platform 304 when changing fingerprint identification module 10, realize simply changing.

In an alternative embodiment of this embodiment, in the case that the platform 304 is formed on the upper portion of the fixing frame 3 with the opening 303, the length of at least one side of the circuit board assembly 20 is greater than the aperture of the platform hole 3041 formed by the platform 304. The platform hole 3041 formed around the platform 304 may be a circular hole or a rectangular hole, and the shape of the platform hole 3041 may be determined according to actual requirements.

In an alternative embodiment of this embodiment, in the case that the platform 304 is formed on the upper portion of the fixing frame 3 with the opening 303, the upper aperture of the platform hole formed by the platform 304 around the platform is larger than the lower aperture, so that the upper portion of the platform 304 forms an inclined surface as shown in fig. 4 and 5, thereby increasing the field of view collected by the fingerprint identification module 10.

As a possible embodiment, the platform 304 may be formed on the lower portion of the fixing frame 3 with the opening 303, as shown in fig. 7, in addition to the platform 304 formed on the upper portion of the fixing frame 3 with the opening 303, and on this basis, the terminal device of the present embodiment may further include the second bracket 50, and the circuit board assembly 20 may be connected to the platform 304 through the second bracket 50.

As a possible implementation, the second bracket 50 includes a recessed area 501, the recessed area 501 is located in a platform hole formed by the platform 304, and the fingerprint identification module 10 is disposed on the upper surface of the recessed area 501 through the circuit board assembly 20; the two ends of the second support 50 are respectively connected to the upper surface of the platform 304, so that the fingerprint identification module 10 is erected in the opening 303.

In the design of this embodiment, the platform 304 supports the second bracket 50, and the second bracket 50 supports the fingerprint recognition device 1, so that the fingerprint recognition device 1 is erected in the opening 303.

The depth of the recessed area 501 of the second bracket 50 can be changed to change the distance between the lower surfaces of the acquisition unit 101 and the display screen 2 in the fingerprint identification module 10, so that the distance between the lower surfaces of the acquisition unit 101 and the display screen 2 can be adjusted according to actual requirements. It should be noted that the second bracket 50 may be a straight bracket besides the bracket having the recessed area 501, so as to be mounted on the platform hole 3041 formed around the platform 304, and then the fingerprint identification module 10 is disposed on the upper surface of the second bracket 50 through the circuit board assembly 20.

In the embodiment of the above design, the opening 303 is formed in the fixed frame 3, the platform 304 is arranged at the lower part of the fixed frame 3 provided with the opening 303, and then the fingerprint identification device 1 is supported by the second support 50 and is connected with the platform 304 by the second support 50, so that the second support 50 is supported by the platform 304, and then the fingerprint identification device 1 is arranged in the installation space 301, in addition, when the fingerprint identification device 1 is replaced, only the connection between the second support 50 and the platform 304 needs to be solved, and therefore, the simple replacement is realized; and when fixed frame 3's thickness is not enough, in this scheme, can be through the sunken degree of depth that increases second support 50 to increase fingerprint identification device 1's accommodation space, and then avoid fingerprint identification device 1 to influence fixed frame 3 and display screen 2's being connected.

In an optional implementation manner of this embodiment, the distance between the lower surface of the display screen 2 and the bottom of the circuit board assembly 20 may be 0 to 5mm, so that the collecting unit 101 may collect fingerprints touching the display screen 2 more accurately.

In the description of the present application, it should be noted that the terms "inside" and "outside" are used for indicating the orientation or position relationship based on the orientation or position relationship shown in the drawings or the orientation or position relationship that the product of the application is usually placed when in use, and are only used for convenience of description and simplification of description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fingerprint recognition device, comprising:

the fingerprint identification module comprises an acquisition unit and a fingerprint identification chip which are integrally packaged;

the circuit board assembly is electrically connected with the fingerprint identification module;

at least part of fingerprint identification module passes through circuit board assembly sets up the installation space that forms at terminal equipment's fixed frame, and makes the fingerprint identification module is located the below of terminal equipment's display screen.

2. The fingerprint identification device according to claim 1, wherein the fingerprint identification module comprises an acquisition unit and a fingerprint identification chip, and the acquisition unit and the fingerprint identification chip are integrally packaged; or, the fingerprint identification module comprises an acquisition unit and a plurality of fingerprint identification chips, the acquisition unit and the plurality of fingerprint identification chips are integrally packaged, wherein the plurality of fingerprint identification chips share the acquisition unit; or, the fingerprint identification module includes the collection unit and the fingerprint identification chip of a plurality of integrative encapsulation.

3. The fingerprint recognition device of claim 1, wherein the circuit board assembly comprises: the flexible printed circuit board is arranged on the upper side of the flexible printed circuit board; or, the circuit board assembly comprises a printed circuit board; or, the circuit board assembly comprises a rigid-flexible circuit board.

4. The fingerprint identification device according to any one of claims 1-3, wherein the fingerprint identification module comprises a chip-scale integrated package of the collecting unit and the fingerprint identification chip.

5. The fingerprint identification device according to any one of claims 1-3, wherein an electrical connection layer is provided between the fingerprint identification module and the circuit board assembly, and the electrical connection layer is a surface mount technology solder or an anisotropic conductive adhesive layer.

6. A terminal device, comprising:

a display screen;

the fixing frame is provided with an installation space; and;

a fingerprint recognition device according to any one of claims 1 to 5;

at least part of fingerprint identification module is passed through circuit board subassembly sets up installation space to make the fingerprint identification module is located the below of display screen.

7. The terminal device of claim 6, wherein the fixing frame is provided with a groove, the mounting space is located in the groove, the lower surface of the circuit board assembly is fixed to the bottom of the groove, and at least a part of the fingerprint identification module is disposed in the groove through the circuit board assembly.

8. The terminal device according to claim 6, wherein the fixing frame defines an opening, the mounting space is located in the opening, the portion of the fixing frame defining the opening extends toward a center of the opening to form a platform, the circuit board assembly is connected to the platform, and at least a portion of the fingerprint identification module is disposed in the opening through the circuit board assembly.

9. The terminal device according to claim 8, wherein the platform is formed at an upper portion of the fixing frame, and an upper surface of the circuit board assembly is connected to a lower surface of the platform.

10. The terminal device according to claim 9, further comprising a first bracket disposed at a periphery of the sidewall of the fingerprint recognition module, wherein a lower end of the first bracket is connected to an upper surface of the circuit board assembly, and an upper end of the first bracket is connected to a lower surface of the platform.

11. The terminal device of claim 9, wherein at least one side of the circuit board assembly has a length greater than an aperture diameter of a platform hole formed around the platform.

12. The terminal device of claim 9, wherein the upper portion of the platform is configured as an inclined surface, and the upper aperture of the platform hole is larger than the lower aperture.

13. The terminal device of claim 8, wherein the platform is formed at a lower portion of the fixing frame, and the terminal device further comprises a second bracket, and the circuit board assembly is connected to the platform through the second bracket.

14. The terminal device of claim 13, wherein the second bracket comprises a recessed area, the recessed area is located in a platform hole formed by the platform, and the fingerprint identification module is arranged on the upper surface of the recessed area through the circuit board assembly.

15. A terminal device according to any of claims 6-14, characterised in that the lower surface of the display screen is spaced from the bottom of the circuit board assembly by 0 to 5 mm.