CN108323205A - A kind of fingerprint device and terminal device - Google Patents
A kind of fingerprint device and terminal device Download PDFInfo
- Publication number
- CN108323205A CN108323205A CN201780003925.3A CN201780003925A CN108323205A CN 108323205 A CN108323205 A CN 108323205A CN 201780003925 A CN201780003925 A CN 201780003925A CN 108323205 A CN108323205 A CN 108323205A
- Authority
- CN
- China
- Prior art keywords
- fingerprint
- terminal device
- antenna radiator
- antenna
- sensor part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/22—Details of telephonic subscriber devices including a touch pad, a touch sensor or a touch detector
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
A kind of fingerprint device and terminal device, are related to electronic technology field, can be multiplexed the antenna radiator of fingerprint device and antenna, to improve the integrated level of device, and then reduce the occupancy to terminal device inner space.Fingerprint device (10) includes：Fingerprint sensor part (11) and flexible circuit plate part (12), wherein the fingerprint sensor part (11) is connected to the mainboard of terminal by the flexible circuit plate part (12)；Fingerprint sensor part (11) and the flexible circuit plate part (12) are covered with low-loss metal conductor (13), form antenna radiator, fingerprint sensor part (11) includes touch circuit (111), and antenna radiator corresponds to hollow out at the touch surface of touch circuit (111)；Conductive stiffening plate (121) is provided in flexible circuit plate part (12), conductive stiffening plate (121) electrically connected antenna radiator, conductive stiffening plate (121) are used as the feed section (14) of antenna radiator.
Description
Technical field
This application involves electronic technology field more particularly to a kind of fingerprint devices and terminal device.
Background technology
In mobile terminal device, it is typically provided with fingerprint identification function, realizes the fingerprint of fingerprint identification function at present
Device is all set to below starting home key positions or back camera head.And these above-mentioned positions usually with the antenna spoke of antenna
Beam position overlaps, such as：Home key positions are usually overlapped with the position of the far field antenna of terminal device, below back camera head
Position usually with the position of NFC (Near Field Communication, wireless near field communication) antenna overlap.And it is existing
In technology, the antenna radiator of fingerprint device and antenna is typically to be separately provided, and is occupied in the two overlapping positions larger
Thickness installs the integrated level for being also unfavorable for improving device respectively both in addition, larger to the occupancy of terminal device inner space.
Invention content
A kind of fingerprint device of embodiments herein offer and terminal device, can be by the antenna spoke of fingerprint device and antenna
Beam is multiplexed, and to improve the integrated level of device, and then reduces the occupancy to terminal device inner space, it is small to be conducive to terminal device
It is type, lightening.
In order to achieve the above objectives, embodiments herein adopts the following technical scheme that：
In a first aspect, a kind of fingerprint device is provided, including：Fingerprint sensor part and flexible circuit plate part, middle finger
Line Sensor section is partially attached to the mainboard of terminal by flexible PCB；Fingerprint sensor part and flexible circuit plate part
It is covered with the low-loss metal conductor of connection, forms antenna radiator；Fingerprint sensor part includes touch circuit, aerial radiation
Body corresponds to hollow out at the touch surface of touch circuit；Conductive stiffening plate is provided in flexible circuit plate part, conductive stiffening plate is electrically connected
Antenna radiator is connect, conductive stiffening plate is used as the feed section of antenna radiator.Compared with the existing technology, side provided by the present application
Case forms antenna radiator by the low-loss metal conductor being connected to the covering of flexible circuit plate part in fingerprint sensor part,
And the feed section that conductive stiffening plate is used as antenna radiator, also, antenna radiator pair are set in flexible circuit plate part
Hollow out at the touch surface of the touch circuit of fingerprint sensor part is answered, to have no effect on the touch function of fingerprint device, therefore
The antenna radiator efficient multiplexing by fingerprint device and antenna is realized, fingerprint device the space occupied is effectively utilized, carries
The high integrated level of device, and then reduce the occupancy to terminal device inner space is conducive to terminal device miniaturization, frivolous
Change.
With reference to first aspect, in the first possible implementation, fingerprint sensor part includes touch circuit and position
Support plate below the touch circuit, wherein the antenna radiator is used as the support plate of the touch circuit.The program
The middle support plate by below touch circuit is multiplexed with antenna radiator, such antenna radiator and touch circuit common support
Plate can effectively reduce the thickness of fingerprint device and antenna radiator intersection.
With reference to first aspect, in second of possible realization method, flexible PCB portion outboard is coated with low-loss gold
Belong to conductor.
With reference to first aspect, in the third possible realization method, feed section includes feed point and/or place.Such as：
There is PIFA (Planar Inverted F Antenna, tablet Inverted-F Antennas) antenna feed point and place, unipole antenna only to have
There are one feed point, PIFA antennas add passive antenna tool, and there are two feed point and one place.
With reference to first aspect, in the 4th kind of possible realization method, the fingerprint device further include be attached at it is described soft
The fingerprint chip of property circuit board section.Be provided with shielding case outside fingerprint chip, and the Shielding Case grounding, wherein shielding case with
Ground is electrically connected by conductive fabric.Here the touch signal that fingerprint chip mainly generates fingerprint sensor part is detected, turns
The processing for the modes such as changing, by shielding case to fingerprint chip shield can be to avoid external signal to fingerprint chip interference.
Second aspect provides a kind of terminal device, including any of the above-described fingerprint device.
In conjunction with second aspect, in the first possible implementation, the display surface in terminal device is arranged in fingerprint device
The non-display area of plate.
In conjunction with second aspect, in second of possible realization method, it is provided with shell foot on the mainboard of the terminal device,
Conductive stiffening plate is electrically connected with shell foot；Shell foot is used to be grounded or shell foot connects the radio circuit on the mainboard.In conjunction with first
Aspect, shell foot are specifically used for connecting with feed point or place.Illustratively, for PIFA antennas, then need be arranged two shell foots, one
A shell foot connection feed point, another shell foot connect place, then only need that a shell foot is arranged for unipole antenna, connect feed point；Needle
Add passive antenna then to need that three shell foots are arranged on PIFA antennas, is separately connected two feed points and one place.
It is provided with locating support on the mainboard of terminal device in the third possible realization method in conjunction with second aspect,
Conductive stiffening plate is fixed on locating support.
In conjunction with second aspect, in the 4th kind of possible realization method, fingerprint sensor part by bonding way or
It is fixed on the mainboard of terminal device by supporting rack mode.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described.
Fig. 1 is a kind of structural schematic diagram of fingerprint device provided by the present application；
Fig. 2 is a kind of structural schematic diagram in the sections AA ' for fingerprint device that the application Fig. 1 is provided；
Fig. 3 is a kind of structural schematic diagram in the sections BB ' for fingerprint device that the application Fig. 1 is provided；
Fig. 4 is the structural representation in the sections BB ' for the fingerprint device as shown in Figure 1 that another embodiment of the application provides
Figure；
Fig. 5 is a kind of structural schematic diagram of terminal device provided by the present application；
Fig. 6 is that the return loss of the antenna radiator of fingerprint device provided by the present application emulates schematic diagram；
Fig. 7 is that the antenna efficiency of the antenna radiator of fingerprint device provided by the present application emulates schematic diagram.
Specific implementation mode
Below in conjunction with the accompanying drawings, embodiments herein is described.
The term used in embodiments herein is the purpose only merely for description specific embodiment, and is not intended to limit
The system present invention.The embodiment of the present invention and the "an" of singulative used in the attached claims, " described " and
"the" is also intended to including most forms, unless context clearly shows that other meanings.It is also understood that art used herein
Language "and/or" refer to and include one or more associated list items purposes any or all may combine.Character herein
"/", it is a kind of relationship of "or" to typically represent forward-backward correlation object.
The antenna radiator that embodiments herein provides can be the far field antenna of terminal device or the day of near field antenna
Beta radiation body, far field antenna can be single-input single-output (single input single output, SISO) antenna, how defeated
Enter multi output (Multiple-Input Multiple-Output, MIMO) antenna, planar inverted-F antenna (Planar Invert F
Antenna, PIFA) antenna, near field antenna can be NFC antenna etc., and the scheme that embodiments herein is provided is not limited to
Above-mentioned antenna, it is to be appreciated that as long as the arbitrary antenna structure comprising antenna radiator should all be applicable in.The reality of the application
It can be the mobile device with fingerprint detection function such as mobile phone, tablet computer to apply the terminal device that example is provided.
Embodiments herein provides a kind of fingerprint device 10, referring to Fig.1, shown in 2,3, including：Fingerprint sensor part
11 and flexible circuit plate part 12, wherein fingerprint sensor part 11 master of terminal is connected to by flexible circuit plate part 12
Plate；Fingerprint sensor part 11 is covered with the low-loss metal conductor 13 being connected to flexible circuit plate part 12, forms antenna spoke
Beam；Fingerprint sensor part 11 includes touch circuit 111, and antenna radiator corresponds to hollow out at the touch surface of touch circuit 111；
Conductive stiffening plate 121,121 electrically connected antenna radiator of conductive stiffening plate, conductive reinforcement are provided in flexible circuit plate part 12
Plate 121 is used as the feed section 14 of antenna radiator.
Wherein, the following two kinds mode may be used in the realization method of fingerprint sensor part 11：Mode one：With reference to Fig. 3 institutes
Show, fingerprint sensor part 11 includes touch circuit 111, and touch circuit 111 is enclosed with low-loss metal conductor except touch surface
13, i.e. antenna radiator corresponds to hollow out at the touch surface of touch circuit 111.In the program, the touch surface of touch circuit 111 is used for
Detect touch operation, it is therefore desirable to expose.Alternatively, mode two：As shown in figure 4, fingerprint sensor part 11 includes touch circuit
111 and the support plate 112 below touch circuit, wherein antenna radiator is used as the support plate of touch circuit 111, in this way
Support plate 112 is formed using low-loss metal conductor.The support plate below touch circuit is multiplexed with aerial radiation in the program
Body, such antenna radiator and touch circuit common support plate can effectively reduce fingerprint device and be overlapped with antenna radiator
Partial thickness.
A kind of example is provided, low-loss metal conductor may be used plating mode and be formed in outside flexible circuit plate part 12
Side, as shown in Fig. 2, 12 outside of flexible circuit plate part is coated with low-loss metal conductor 13.
Compared with the existing technology, scheme provided by the present application in fingerprint sensor part and flexible circuit plate part by covering
The low-loss metal conductor of lid connection forms antenna radiator, and conductive stiffening plate is arranged in flexible circuit plate part and is used as day
The feed section of beta radiation body, also, antenna radiator corresponds to hollow out at the touch surface of the touch circuit of fingerprint sensor part,
To have no effect on the touch function of fingerprint device, it is achieved that the antenna radiator of fingerprint device and antenna is effectively multiple
With, be effectively utilized fingerprint device the space occupied, improve the integrated level of device, and then reduce to terminal device inside sky
Between occupancy, be conducive to terminal device miniaturization, it is lightening.
In addition, feed section 14 includes feed point and/or place.Such as：PIFA (Planar Inverted F Antenna,
Tablet Inverted-F Antennas) antenna has feed point and a place, unipole antenna only have there are one feed point, PIFA antennas add passive antenna to have
There are two feed point and one place.
Shown in referring to Fig.1, fingerprint device further includes the fingerprint chip 15 for being attached at flexible circuit plate part 12.Fingerprint chip
It is outer to be provided with shielding case 16, and shielding case 16 is grounded, and wherein shielding case is electrically connected with ground by conductive fabric.Here fingerprint chip
The touch signal mainly generated to fingerprint sensor part such as is detected, converts at the processing of modes, by shielding case to fingerprint
Chip carries out the interference that shielding can be to avoid external signal to fingerprint chip.
Embodiments herein also provides a kind of terminal device, including any of the above-described fingerprint device.As shown in figure 5, fingerprint
The non-display area 20 in the display panel of terminal device is arranged in device 10.A kind of example is：Fingerprint device 10 is set to non-aobvious
Show the starting home key positions in region.
Shell foot is provided on the mainboard of terminal device, conductive stiffening plate is electrically connected with shell foot, and shell foot is used to be grounded or bullet
Foot connects the radio circuit on mainboard.With reference to first aspect, shell foot is specifically used for connecting with feed point or place.Illustratively, needle
To PIFA antennas, then need that two shell foots are arranged, shell foot connection feed point, an another shell foot connect place, for unipole antenna
It then only needs that a shell foot is arranged, connects feed point；Add passive antenna then to need that three shell foots are arranged for PIFA antennas, connects respectively
Connect two feed points and one place.
Locating support is provided on the mainboard of terminal device, conductive stiffening plate is fixed on locating support.The application is to fixed
The mode of position holder is not construed as limiting, such as：Locating support can be several positioning columns, by matching with the via on conductive stiffening plate
It is the card slot coordinated with conductive stiffening plate outer rim shape to close fixation or locating support.It is glued in addition, fingerprint sensor part passes through
It connects mode or is fixed on the mainboard of terminal device by supporting rack mode.
The performance for the antenna radiator that fingerprint device to above structure is included 5G (5th-Generation, the 5th
Third-generation mobile communication technology) it is tested under channel radio communication condition, test result is as shown in Figure 6,7, wherein
Fig. 6 shows that the return loss of antenna at different frequencies, the wherein longitudinal axis are：Return loss (unit dB), horizontal axis
For：Frequency (unit GHz)；Fig. 7 shows that the antenna efficiency of antenna at different frequencies, the wherein longitudinal axis are：Antenna efficiency (unit
DB), horizontal axis is：Frequency (unit GHz)；Wherein, within the scope of the free frequency range 5.150GHz-5.825GHz of 5G, return loss
Less than -2.25dB, corresponding antenna efficiency is more than -5dB, and the antenna efficiency of this structure design is met the requirements.
More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (11)
1. a kind of fingerprint device, which is characterized in that including：Fingerprint sensor part and flexible circuit plate part, wherein the finger
Line Sensor section is partially attached to the mainboard of terminal by the flexible PCB；
The fingerprint sensor part and the flexible PCB are partially covered with low-loss metal conductor, form aerial radiation
Body, the fingerprint sensor part includes touch circuit, and the antenna radiator corresponds to be engraved at the touch surface of the touch circuit
It is empty；
Conductive stiffening plate is provided in the flexible circuit plate part, the conduction stiffening plate is electrically connected the antenna radiator,
The conduction stiffening plate is used as the feed section of the antenna radiator.
2. fingerprint device according to claim 1, which is characterized in that the fingerprint sensor part include touch circuit and
Support plate below the touch circuit, wherein the antenna radiator is used as the support plate of the touch circuit.
3. fingerprint device according to claim 1, which is characterized in that the flexible PCB portion outboard is coated with low-loss
Metallic conductor.
4. fingerprint device according to claim 1, which is characterized in that the feed section includes feed point and/or place.
5. fingerprint device according to claim 1, which is characterized in that the fingerprint device further includes being attached at the flexibility
The fingerprint chip of circuit board section.
6. fingerprint device according to claim 5, which is characterized in that it is provided with shielding case outside the fingerprint chip, and
The Shielding Case grounding.
7. a kind of terminal device, which is characterized in that including fingerprint device as claimed in any one of claims 1 to 6.
8. terminal device according to claim 7, which is characterized in that the fingerprint device is arranged in the terminal device
The non-display area of display panel.
9. terminal device according to claim 7, which is characterized in that it is provided with shell foot on the mainboard of the terminal device,
The conduction stiffening plate is electrically connected with the shell foot；
The shell foot is for being grounded, alternatively, the shell foot connects the radio circuit on the mainboard.
10. terminal device according to claim 7, which is characterized in that be provided with positioning on the mainboard of the terminal device
Holder, the conduction stiffening plate are fixed on the locating support.
11. terminal device according to claim 7, which is characterized in that the fingerprint sensor part passes through bonding way
Or it is fixed on by supporting rack mode on the mainboard of the terminal device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084694 | 2017-02-16 | ||
| CN2017100846945 | 2017-02-16 | ||
| PCT/CN2017/087590 WO2018149058A1 (en) | 2017-02-16 | 2017-06-08 | Fingerprint device, and terminal apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108323205A true CN108323205A (en) | 2018-07-24 |
Family
ID=62894927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780003925.3A Pending CN108323205A (en) | 2017-02-16 | 2017-06-08 | A kind of fingerprint device and terminal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108323205A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110378322A (en) * | 2019-08-20 | 2019-10-25 | 上海图正信息科技股份有限公司 | A kind of fingerprint recognition mould group based on glass sensor |
| CN110730968A (en) * | 2019-05-06 | 2020-01-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN111163256A (en) * | 2020-02-28 | 2020-05-15 | 维沃移动通信有限公司 | Separated camera assembly and electronic equipment |
| CN112952344A (en) * | 2021-01-27 | 2021-06-11 | 深圳市锐尔觅移动通信有限公司 | Electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203014886U (en) * | 2012-12-04 | 2013-06-19 | 广东欧珀移动通信有限公司 | Mobile terminal |
| CN105404881A (en) * | 2015-12-25 | 2016-03-16 | 成都费恩格尔微电子技术有限公司 | Fingerprint sensor assembly and preparation method thereof |
| CN105608437A (en) * | 2015-12-25 | 2016-05-25 | 成都费恩格尔微电子技术有限公司 | Hybrid fingerprint acquisition chip and acquisition method |
| CN106155190A (en) * | 2015-04-13 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of support NFC function and the device of fingerprint identification function and terminal |
-
2017
- 2017-06-08 CN CN201780003925.3A patent/CN108323205A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203014886U (en) * | 2012-12-04 | 2013-06-19 | 广东欧珀移动通信有限公司 | Mobile terminal |
| CN106155190A (en) * | 2015-04-13 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of support NFC function and the device of fingerprint identification function and terminal |
| CN105404881A (en) * | 2015-12-25 | 2016-03-16 | 成都费恩格尔微电子技术有限公司 | Fingerprint sensor assembly and preparation method thereof |
| CN105608437A (en) * | 2015-12-25 | 2016-05-25 | 成都费恩格尔微电子技术有限公司 | Hybrid fingerprint acquisition chip and acquisition method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110730968A (en) * | 2019-05-06 | 2020-01-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN110378322A (en) * | 2019-08-20 | 2019-10-25 | 上海图正信息科技股份有限公司 | A kind of fingerprint recognition mould group based on glass sensor |
| CN111163256A (en) * | 2020-02-28 | 2020-05-15 | 维沃移动通信有限公司 | Separated camera assembly and electronic equipment |
| CN112952344A (en) * | 2021-01-27 | 2021-06-11 | 深圳市锐尔觅移动通信有限公司 | Electronic device |
| CN112952344B (en) * | 2021-01-27 | 2024-01-02 | 深圳市锐尔觅移动通信有限公司 | Electronic equipment |
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Application publication date: 20180724 |
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