CN105426873A - Fingerprint recognition device and terminal with fingerprint recognition device - Google Patents
Fingerprint recognition device and terminal with fingerprint recognition device Download PDFInfo
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- CN105426873A CN105426873A CN201510956762.3A CN201510956762A CN105426873A CN 105426873 A CN105426873 A CN 105426873A CN 201510956762 A CN201510956762 A CN 201510956762A CN 105426873 A CN105426873 A CN 105426873A
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- light source
- identification device
- fingerprint identification
- backing plate
- support
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- 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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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Abstract
The invention provides a fingerprint recognition device and a terminal with the fingerprint recognition device, wherein the fingerprint recognition device comprises a support, a fingerprint recognition chip assembled under the support, at least one light source fixed on the periphery of the support and a cushion plate supported on the surface of the support, the cushion plate is located on the periphery of the light source, and the cushion plate is used to isolate external stray light along a side edge direction of the fingerprint recognition device from the light source; and the cushion plate is disposed to isolate the external stray light along the side edge direction of the fingerprint recognition device from the light source and hinder adverse influences brought by the external stray light to the fingerprint recognition device, and the light source is embraced in the cushion plate to reduce losses of light rays emitted by the light source and potentially increase luminous flux emitted by the light source into a light guide plate so as to better realize a fingerprint recognition function. In addition, setting of the cushion plate makes for immobilization and stabilization among a conduit plate, a cover plate and the support and enhances structural stability and overall strength of the whole fingerprint recognition device.
Description
Technical field
The present invention relates to fingerprint identification technology field, particularly relate to a kind of fingerprint identification device and there is the terminal of this fingerprint identification device.
Background technology
Prior art please refer to shown in Chinese utility model patent bulletin CN204791058U patent, and this utility model patent discloses a kind of fingerprint identification device, and described fingerprint identification device is installed on the panel of terminal.Fingerprint identification device comprises fingerprint recognition module, control element and illuminating module.The inside surface of panel is fixed in the laminating of fingerprint recognition module, the other module electrical connection control element of fingerprint.Illuminating module comprises pedestal and is arranged on the light source on pedestal, and pedestal is fixedly connected with fingerprint recognition module, and light source electrical connection control element, control element controls the duty of light source.But the light source of this type of fingerprint identification device disclosed in prior art is peripheral without any light obstructing member, make the light source irradiation of fingerprint identification device to the luminous flux little (light leak) of panel, and because light source periphery is without any light obstructing member, the mutual disturbing effect of the light making extraneous veiling glare and light source send weakens greatly to make the recognition performance of fingerprint identification device.
Therefore, be necessary to provide a kind of fingerprint identification device of improvement to solve the problem.
Summary of the invention
The present invention is directed to prior art Problems existing, provide a kind of novel fingerprint identification device and there is the terminal of this fingerprint identification device, the impact of extraneous veiling glare can be eliminated, increase light source irradiation to a certain extent to the luminous flux on panel simultaneously.
For achieving the above object, the invention provides a kind of fingerprint identification device, at least one light source including support, be assembled in fingerprint recognition chip below described support, be fixed on support surrounding, described fingerprint identification device also includes backing plate, described backing plate is carried on rack surface, and be positioned at light source periphery, described backing plate is for isolating along the extraneous veiling glare on the lateral margin direction of fingerprint identification device and light source.
As a further improvement on the present invention, described backing plate is closed frame shaped and is formed with accommodation hole in centre position.
As a further improvement on the present invention, described backing plate inner edge is formed with spacing preiection for spacing light source to projection in accommodation hole.
As a further improvement on the present invention, the outer rim of at least one among described support and backing plate caves inward and is formed with stopper slot.
As a further improvement on the present invention, described support lower surface caves inward and is formed with cabling and reserves groove, described cabling is reserved groove and is become round table-like, the corresponding cabling of upper surface of described support reserves the bond pad trench that groove location is formed with " L " shape, described light source is arranged in bond pad trench correspondence, and reserves groove realization and the electric connection of docking circuit board by bond pad trench and cabling.
As a further improvement on the present invention, described fingerprint identification device also includes the light guide plate be carried on described support, and described backing plate is positioned at light guide plate periphery, and described light source is between backing plate and light guide plate.
As a further improvement on the present invention, described backing plate is made up through etching of sheet metal.
As a further improvement on the present invention, described support is roughly frame structure and the through hole be formed with for holding fingerprint recognition chip, the alar part for spacing fixing fingerprint recognition chip that described support includes framework and extends in receiving opening along framework upper surface, described alar part be arranged so that receiving opening xsect roughly in " convex " word shape.
As a further improvement on the present invention, described fingerprint identification device also includes the cover plate be covered on above described light guide plate, and described backing plate, light guide plate and light source are positioned at same plane.
The invention also discloses a kind of terminal, include at least one fingerprint identification device, described fingerprint identification device is provided with support, be assembled in the fingerprint recognition chip below described support, be fixed at least one light source of support surrounding, be assembled in the light guide plate on described support and cover plate, described fingerprint identification device also includes backing plate, described backing plate is carried on rack surface, and be positioned at light source periphery, described backing plate is for isolating along the extraneous veiling glare on the lateral margin direction of fingerprint identification device and light source, described backing plate is frame shaped and is formed with the accommodation hole holding light guide plate in centre position, described cover plate is covered on light guide plate, on light source and backing plate, described light source is between light guide plate and backing plate.
The invention has the beneficial effects as follows: by arranging backing plate, isolate with the veiling glare extraneous in the future in the lateral margin direction of fingerprint identification device and light source, intercept the adverse effect of extraneous veiling glare to fingerprint identification device, light source is centered around within backing plate to reduce the loss of the light that light source sends simultaneously, potential increase light source injects the luminous flux of light guide plate, better to realize fingerprint identification function.In addition, the fixing that the setting of described backing plate is conducive to again between catheter plate, cover plate and support is stablized, and adds structural stability and the bulk strength of whole fingerprint identification device.
Accompanying drawing explanation
Fig. 1 is the perspective view of fingerprint identification device of the present invention;
The perspective view that Fig. 2 sees from another angle for fingerprint identification device described in Fig. 1;
Fig. 3 is the part isometric exploded view of fingerprint identification device of the present invention, which show cover plate and light guide plate be separated from fingerprint identification device after three-dimensional exploded view;
Fig. 4 is the part isometric exploded view of fingerprint identification device of the present invention, which show cover plate, light guide plate and backing plate from the three-dimensional exploded view after fingerprint identification device separation;
Fig. 5 is the three-dimensional exploded view of fingerprint identification device of the present invention;
The perspective view that Fig. 6 sees from another angle for fingerprint identification device described in Fig. 5;
Fig. 7 is for fingerprint identification device of the present invention is from the diagrammatic cross-section of the line of A-A shown in Fig. 1;
Fig. 8 is the front view of diagrammatic cross-section shown in Fig. 7.
Embodiment
Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiments do not limit the present invention.
Please refer to shown in Fig. 1 to Fig. 8, for a kind of fingerprint identification device 100 disclosed by the invention, several light sources 3 that this fingerprint identification device 100 includes support 1, be assembled in fingerprint recognition chip 2 below described support, be fixed on support 1 surrounding, the backing plate 4 being located in some light source 3 peripheries, the cover plate 6 being covered on the light guide plate 5 above described fingerprint recognition chip 2 and being covered on above described light guide plate 5.In the present invention, described backing plate 4, light guide plate 5 and light source 3 are positioned at same plane.Described fingerprint identification device 100 is for being electrically connected the circuit board (not shown) be fixed on a kind of end product (not shown).Described terminal can be mobile phone, panel computer, USB flash disk, portable hard drive, automobile, proof box, antitheft door etc.Certain described terminal is not limited to above exemplifying, and can be the equipment that in actual life, all need to install fingerprint identification device.
Please refer to shown in Fig. 2, Fig. 4 to Fig. 8, described support 1 is made up of insulating material, and is roughly rectangle frame structure.Described support 1 centre position is formed with the receiving opening 10 run through up and down.The alar part 12 that described support 1 includes framework 11 and extends in receiving opening 10 along framework 11 upper surface.Described alar part 12 be arranged so that receiving opening 10 xsect roughly in " convex " word shape.Described alar part 12 is for spacing fixing fingerprint recognition chip 2.The upper surface of described framework 11 caves inward in corner location place and is formed with glue groove 110, and described glue groove 110 is for receiving colloid unnecessary in processing procedure.Described support 1 lower surface caves inward and is formed with cabling and reserves groove 111, and described cabling is reserved groove 111 and do not run through support 1 upper surface and become round table-like.The corresponding cabling of upper surface of described support 1 reserves the bond pad trench 113 that groove 111 position is formed with " L " shape.When described fingerprint identification device 100 is installed up to circuit board, described cabling is reserved groove 111 and is punched by means such as laser and be communicated with bond pad trench 113, and the light source 3 being realized fingerprint identification device 100 by conductive material (not shown, can be scolding tin etc.) is electrically connected with circuit board.At least one lateral margin of described support 1 is formed with locating slot 112, and described locating slot 112 caves inward along the lateral margin of support 1 and runs through the upper and lower surface of support 11 and formed.Described locating slot 112 is for being fixed to location during circuit board by fingerprint identification device 100 assembling.
Please refer to shown in Fig. 2, Fig. 4 to Fig. 6, in the present invention, described light source 3 is preferably multiple, and multiple light source 3 is intervally arranged framework 11 upper surface (the present invention refers to that the upper surface surrounding of framework 11 is laid with light source 3) being fixed on support 1 circlewise.The described light source 3 laid in the form of a ring can around light guide plate 5 around, so that uniform light injects light guide plate 5.Light source 3 also can be one, and now this light source 3 can be designed to annular, and around light guide plate 5.In addition, described light source is preferably LED lamp bead, and LED lamp bead heat dispersion is better, and its convenient for maintaining is changed.In the present invention, the leg (not shown) of described light source 3 corresponds respectively to above-mentioned bond pad trench 113 and arranges.
Please refer to shown in Fig. 1 to Fig. 8, in the present invention, described backing plate 4 is roughly rectangle frame shaped.Described backing plate 4 is made up of metal material, and preferred stainless steel so can ensure the intensity of backing plate 4.In actual product, described backing plate 4 is very thin, and therefore first-selection is made to ensure that backing plate 4 has good flatness by etching.Locating slot 112 correspondence position on described backing plate 4 outer rim and support 1 is also formed with locating slot 41, and the shape of described locating slot 41 and function are all similar to locating slot 112.Run through in the middle of described backing plate 4 and be formed with accommodation hole 40 for holding light guide plate 5.Described backing plate 4 inner edge is formed with the spacing preiection 42 for spacing fixed light source 3 to projection in accommodation hole 40.In the present invention, the assembling of described backing plate 4 to be fixed between cover plate 5 and support 1 and peripheral around light source 3.Described backing plate 4 circumference is identical with support 1 circumference.Certainly in other embodiments, described backing plate 4 also can be arranged to the some sections of sheet materials be separated, every section of backing plate 4 can be arc shape, " L " shape tabular etc., only need to meet and can isolate the light source 3 adjacent with backing plate 4 and extraneous veiling glare, certain backing plate 4 shape also can do according to the concrete profile of actual fingerprint recognition device 100 change adapted to.
Please refer to shown in Fig. 1 to Fig. 7, in the present invention, described light guide plate 5 is the tabular component of printing opacity, the glass sheet that preferred transparent performance is good.Described light guide plate 5 is carried on the upper surface of support 1 and in the middle of the accommodation hole 40 being contained in backing plate 4, described light source 3 is fixed in the gap (non-label) formed between light guide plate 5 and backing plate 4.
Please refer to shown in Fig. 1 to Fig. 7, described cover plate 5 can be a part for mobile terminal case, can also be independent parts.
Described fingerprint identification device 100 in the present invention injects light guide plate 5 by light source 3 luminescence, is realized the imaging of fingerprint by the refraction of light guide plate and reflection, coordinates the identification of fingerprint chip 2 simultaneously, has realized the fingerprint identification function of mobile terminal.
In the present invention, by arranging backing plate 4, isolate with the veiling glare extraneous in the future in the lateral margin direction of fingerprint identification device 100 device and light source, intercept the adverse effect of extraneous veiling glare to fingerprint identification device 100, light source 3 is centered around within backing plate 4 to reduce the loss of the light that light source 3 sends simultaneously, potential increase light source injects the luminous flux of light guide plate 5, better to realize fingerprint identification function.In addition, the fixing that the setting of described backing plate 4 is conducive to again between catheter plate 5, cover plate 6 and support 1 is stablized, and adds structural stability and the bulk strength of whole fingerprint identification device 100.
Be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (10)
1. a fingerprint identification device, at least one light source including support, be assembled in fingerprint recognition chip below described support, be fixed on support surrounding, it is characterized in that: described fingerprint identification device also includes backing plate, described backing plate is carried on rack surface, and be positioned at light source periphery, described backing plate is for isolating along the extraneous veiling glare on the lateral margin direction of fingerprint identification device and light source.
2. a kind of fingerprint identification device according to claim 1, is characterized in that: described backing plate is closed frame shaped and is formed with accommodation hole in centre position.
3. a kind of fingerprint identification device according to claim 2, is characterized in that: described backing plate inner edge is formed with the spacing preiection for spacing light source to projection in accommodation hole.
4. a kind of fingerprint identification device according to claim 1, is characterized in that: the outer rim of at least one among described support and backing plate caves inward and is formed with stopper slot.
5. a kind of fingerprint identification device according to claim 1, it is characterized in that: described support lower surface caves inward and is formed with cabling and reserves groove, described cabling is reserved groove and is become round table-like, the corresponding cabling of upper surface of described support reserves the bond pad trench that groove location is formed with " L " shape, described light source is arranged in bond pad trench correspondence, and reserves groove realization and the electric connection of docking circuit board by bond pad trench and cabling.
6. a kind of fingerprint identification device according to any one in claim 1 to 5, it is characterized in that: described fingerprint identification device also includes the light guide plate be carried on described support, described backing plate is positioned at light guide plate periphery, and described light source is between backing plate and light guide plate.
7. a kind of fingerprint identification device according to claim 6, is characterized in that: described backing plate is made up through etching of sheet metal.
8. a kind of fingerprint identification device according to claim 6, it is characterized in that: described support is roughly frame structure and the through hole be formed with for holding fingerprint recognition chip, the alar part for spacing fixing fingerprint recognition chip that described support includes framework and extends in receiving opening along framework upper surface, described alar part be arranged so that receiving opening xsect roughly in " convex " word shape.
9. a kind of fingerprint identification device according to claim 6, it is characterized in that: described fingerprint identification device also includes the cover plate be covered on above described light guide plate, described backing plate, light guide plate and light source are positioned at same plane.
10. a terminal, include at least one fingerprint identification device, described fingerprint identification device is provided with support, be assembled in the fingerprint recognition chip below described support, be fixed at least one light source of support surrounding, be assembled in the light guide plate on described support and cover plate, it is characterized in that: described fingerprint identification device also includes backing plate, described backing plate is carried on rack surface, and be positioned at light source periphery, described backing plate is for isolating along the extraneous veiling glare on the lateral margin direction of fingerprint identification device and light source, described backing plate is frame shaped and is formed with the accommodation hole holding light guide plate in centre position, described cover plate is covered on light guide plate, on light source and backing plate, described light source is between light guide plate and backing plate.
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CN201510956762.3A CN105426873B (en) | 2015-12-17 | 2015-12-17 | A kind of fingerprint identification device and the terminal with the fingerprint identification device |
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CN106295606A (en) * | 2016-08-19 | 2017-01-04 | 维沃移动通信有限公司 | A kind of fingerprint recognition assembly, fingerprint recognition module and mobile terminal |
CN108323207A (en) * | 2018-02-06 | 2018-07-24 | 深圳市汇顶科技股份有限公司 | Screen lower biometric devices, living things feature recognition component and terminal device |
CN110095901A (en) * | 2019-05-17 | 2019-08-06 | 深圳市隆利科技股份有限公司 | A kind of lower fingerprint identification device of side entrance back module and screen equipped with cavity |
CN111066029A (en) * | 2019-07-30 | 2020-04-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification subassembly, optics fingerprint display module assembly and electron device |
WO2022041069A1 (en) * | 2020-08-27 | 2022-03-03 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition apparatus and electronic device |
WO2023159402A1 (en) * | 2022-02-23 | 2023-08-31 | 京东方科技集团股份有限公司 | Fingerprint recognition module |
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CN110095901A (en) * | 2019-05-17 | 2019-08-06 | 深圳市隆利科技股份有限公司 | A kind of lower fingerprint identification device of side entrance back module and screen equipped with cavity |
CN110095901B (en) * | 2019-05-17 | 2024-01-19 | 深圳市隆利科技股份有限公司 | Side income formula backlight unit and fingerprint identification device under screen with cavity |
CN111066029A (en) * | 2019-07-30 | 2020-04-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification subassembly, optics fingerprint display module assembly and electron device |
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CN111066029B (en) * | 2019-07-30 | 2023-10-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification subassembly, optical fingerprint display module assembly and electron device |
WO2022041069A1 (en) * | 2020-08-27 | 2022-03-03 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition apparatus and electronic device |
WO2023159402A1 (en) * | 2022-02-23 | 2023-08-31 | 京东方科技集团股份有限公司 | Fingerprint recognition module |
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