Title:
UNDER-SCREEN OPTICAL FINGERPRINT IDENTIFICATION SYSTEM AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/037991
Kind Code:
A1
Abstract:
The present invention provides an under-screen optical fingerprint identification system and an electronic device. The under-screen optical fingerprint identification system comprises: an optical fingerprint identification module and a fingerprint detection light source, wherein the optical fingerprint identification module is located on one side, facing away from a display panel, of a backlight module; the fingerprint detection light source is used to emit detection light to a fingerprint detection area on the display panel; the detection light is invisible light that can pass through the backlight module; and the detection light is reflected by a finger in the detection area, then passes through the backlight module and enters the optical fingerprint identification module, so that the optical fingerprint identification module forms a fingerprint image according to the reflected detection light. Since the detection light emitted by the fingerprint detection light source irradiates the finger in the fingerprint detection area and is reflected thereby, the reflected detection light with fingerprint information can also pass through the backlight module and irradiate the optical fingerprint identification module located behind the backlight module, so that the optical fingerprint identification module can form a fingerprint image according to the reflected detection light, thereby realizing the detection of an optical fingerprint.
Inventors:
XIE HAO (CN)
Application Number:
PCT/CN2019/081564
Publication Date:
February 27, 2020
Filing Date:
April 04, 2019
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
G06F3/041; G06V10/141; G06V10/143
Foreign References:
| CN107885361A | 2018-04-06 | |||
| CN101349845A | 2009-01-21 | |||
| US20080007507A1 | 2008-01-10 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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