Title:
FINGERPRINT RECOGNITION APPARATUS, DISPLAY SCREEN AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/133833
Kind Code:
A1
Abstract:
A fingerprint recognition apparatus (200), a display screen (400) and an electronic device (300), which can effectively improve the function of fingerprint recognition. The fingerprint recognition apparatus (200) is applied to an electronic device comprising a display screen. The display screen does not comprise a polarizer. The fingerprint recognition apparatus comprises: a linear polarizer array (210), which comprises a plurality of groups of linear polarizers (211), wherein each group of linear polarizers (211) among the plurality of groups of linear polarizers (211) comprises at least two adjacent linear polarizers, and the polarization directions of the linear polarizers in each group of linear polarizers are different from each other; and a pixel unit array (220), which is arranged below the linear polarizers, wherein the pixel unit array (220) comprises a plurality of groups of pixel units (221), each group of pixel units (221) among the plurality of groups of pixel units comprises at least two pixel units and corresponds to one group of linear polarizers (211) in the linear polarizer array, each pixel unit in each group of pixel units (221) is used for receiving a light signal, the light signal comprises a first light signal (2201) returned after a linearly polarized light signal sent from a light source passes through a surface of a finger above a display screen, a second light signal (2202) returned after the linearly polarized light signal sent from the light source passes through the interior of the finger above the display screen, and an ambient light signal (2203), and pixel values of at least two pixel units in each group of pixel units (221) are used for acquiring a fingerprint image.
Inventors:
CHENG LEIGANG (CN)
XIAO YU (CN)
YI FUJIAN (CN)
XIAO YU (CN)
YI FUJIAN (CN)
Application Number:
PCT/CN2020/138727
Publication Date:
June 30, 2022
Filing Date:
December 23, 2020
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
G06K9/20
Foreign References:
| CN110770747A | 2020-02-07 | |||
| CN108873480A | 2018-11-23 | |||
| CN103679153A | 2014-03-26 | |||
| CN106339682A | 2017-01-18 | |||
| US20170372113A1 | 2017-12-28 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
Download PDF: