CN104297831B - Optical fingerprint sensor chip module grating and preparation method thereof - Google Patents
Optical fingerprint sensor chip module grating and preparation method thereof Download PDFInfo
- Publication number
- CN104297831B CN104297831B CN201410589658.0A CN201410589658A CN104297831B CN 104297831 B CN104297831 B CN 104297831B CN 201410589658 A CN201410589658 A CN 201410589658A CN 104297831 B CN104297831 B CN 104297831B
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- Prior art keywords
- grating
- optical fingerprint
- screen
- fingerprint sensor
- sensor chip
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1847—Manufacturing methods
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
Abstract
The invention discloses a kind of optical fingerprint sensor chip module grating and preparation method thereof, grating is set on the screen of optical fingerprint sensor and alignment mark is carried, sensor chip is attached on screen, the position of the correspondence grating, is connected by flexible PCB between multiple sensor chips.Structure and process is simple, high precision.
Description
Technical field
The present invention relates to a kind of optical fingerprint sensor chip, more particularly to a kind of optical fingerprint sensor chip module light
Grid and preparation method thereof.
Background technology
As shown in Figure 1 and Figure 2, optical fingerprint sensor needs to make light on each pixel using the principle of pinhole imaging system
Grid, so as to meet the condition of pinhole imaging system.
In prior art, all it is to make single grating.Complex structure, precision are low.
The content of the invention
It is an object of the invention to provide a kind of structure and process is simple, the optical fingerprint sensor chip module light of high precision
Grid and preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions：
The optical fingerprint sensor chip module grating of the present invention, arranges grating simultaneously on the screen of optical fingerprint sensor
With alignment mark, sensor chip is attached on screen, the position of the correspondence grating passes through between multiple sensor chips
Flexible PCB connects.
The manufacture method of optical fingerprint sensor chip module grating, it is characterised in that including step：
First, grating is sticked or is made on the screen of optical fingerprint sensor and with alignment mark；
Then, sensor chip is attached on screen, the position of the correspondence grating；
Afterwards, will be connected by flexible PCB between multiple sensor chips.
As seen from the above technical solution provided by the invention, optical fingerprint sensor core provided in an embodiment of the present invention
Piece module grating and preparation method thereof, as grating is arranged on the screen of optical fingerprint sensor and alignment mark is carried, will
Sensor chip is attached on screen, the position of the correspondence grating, is connected by flexible PCB between multiple sensor chips,
Structure and process is simple, high precision.
Description of the drawings
Fig. 1 is the structural representation of grating in optical fingerprint sensor pixel；
Fig. 2 is pin-hole imaging schematic diagram；
Fig. 3 is the schematic diagram of optical fingerprint sensor chip module grating in the embodiment of the present invention；
Fig. 4 is that grating (with alignment mark) is pasted on screen glass in the embodiment of the present invention or the schematic diagram of grating is made.
In figure：1st, object (finger), 2, raster unit, 3, the photosensitive unit of chip, 4 gratings, 5 chips, 6, flexible electrical
Road plate FPC, 7, screen.
Specific embodiment
The embodiment of the present invention will be described in further detail below.
The optical fingerprint sensor chip module grating of the present invention, its preferably specific embodiment is：
Grating is set on the screen of optical fingerprint sensor and alignment mark is carried, sensor chip is attached to into screen
On, the position of the correspondence grating is connected by flexible PCB between multiple sensor chips.
The grating is attached on the glass of the screen or grating is directly made on the glass of the screen.
The manufacture method of the above-mentioned optical fingerprint sensor chip module grating of the present invention, its preferably specific embodiment
It is：
Including step：
First, grating is sticked or is made on the screen of optical fingerprint sensor and with alignment mark；
Then, sensor chip is attached on screen, the position of the correspondence grating；
Afterwards, will be connected by flexible PCB between multiple sensor chips.
Grating is made in the glass of screen by optical fingerprint sensor chip module grating of the present invention and preparation method thereof
On, simultaneous with alignment mark, sensor chip is attached on screen, the position of correspondence grating.
As shown in figure 3, the schematic diagram for module is made in specific embodiment；
As shown in figure 4, being that grating (band alignment mark) is pasted on screen glass or grating schematic diagram is made.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (2)
1. a kind of optical fingerprint sensor chip module grating, it is characterised in that arrange on the screen of optical fingerprint sensor
Grating simultaneously carries alignment mark, and sensor chip is attached on screen, the position of the correspondence grating, multiple sensor chips it
Between by flexible PCB connect；
The grating is attached on the glass of the screen or grating is directly made on the glass of the screen.
2. the manufacture method of the optical fingerprint sensor chip module grating described in a kind of claim 1, it is characterised in that include
Step：
First, grating is sticked or is made on the screen of optical fingerprint sensor and with alignment mark；
Then, sensor chip is attached on screen, the position of the correspondence grating；
Afterwards, will be connected by flexible PCB between multiple sensor chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589658.0A CN104297831B (en) | 2014-10-28 | 2014-10-28 | Optical fingerprint sensor chip module grating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589658.0A CN104297831B (en) | 2014-10-28 | 2014-10-28 | Optical fingerprint sensor chip module grating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104297831A CN104297831A (en) | 2015-01-21 |
| CN104297831B true CN104297831B (en) | 2017-04-05 |
Family
ID=52317632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410589658.0A Active CN104297831B (en) | 2014-10-28 | 2014-10-28 | Optical fingerprint sensor chip module grating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104297831B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092310B (en) * | 2017-04-27 | 2020-04-03 | Oppo广东移动通信有限公司 | Display screen, display device and mobile terminal |
| CN112699767A (en) * | 2020-12-25 | 2021-04-23 | 北京思比科微电子技术股份有限公司 | Anti-counterfeiting optical fingerprint chip integrating multispectral and hyperspectral films |
| CN112603302A (en) * | 2020-12-25 | 2021-04-06 | 北京思比科微电子技术股份有限公司 | Method for detecting blood oxygen concentration by using optical fingerprint identification chip under screen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10110724A1 (en) * | 2001-03-06 | 2002-09-26 | Infineon Technologies Ag | Fingerprint sensor with potential modulation of the ESD protective grid |
| DE10260186B3 (en) * | 2002-12-20 | 2004-06-24 | Infineon Technologies Ag | Biometric sensor |
| CN101276406B (en) * | 2007-03-29 | 2011-05-04 | 鸿富锦精密工业（深圳）有限公司 | Fingerprint identification device and portable electronic device |
| CN201429854Y (en) * | 2009-02-18 | 2010-03-24 | 重庆医科大学 | Novel optical fingerprint sensor based on USB and holographic technology |
| CN204142988U (en) * | 2014-10-28 | 2015-02-04 | 北京思比科微电子技术股份有限公司 | Optical fingerprint sensor chip module grating |
-
2014
- 2014-10-28 CN CN201410589658.0A patent/CN104297831B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104297831A (en) | 2015-01-21 |
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