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Title:
OPTICAL FINGERPRINT RECOGNITION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/134059
Kind Code:
A1
Abstract:
An optical fingerprint recognition system (20), which provides the surface of a light guide panel (21) as a fingerprint sensing area (211) to be pressed with a finger, at the same time, provides a collimated optical signal and introduces the optical signal into the light guide panel (21) for transmission by means of total internal reflection effect, and by utilizing the damage caused by the pressing of the finger to the total internal reflection of the optical signal in the light guide panel (21), allows a photosensitive component (24) to detect a waveform change of the optical signal and process into a fingerprint image. As such, when the optical fingerprint recognition system (20) is integrated into a display panel, the photosensitive component (24) is concealed in the rear surface of the display panel and needs not to receive a fingerprint-reflected light, thus obviating the problem with transmittance; moreover, the fingerprint sensing area (211) can be implemented over the entire or a partial area of the light guide panel (21), thus not only allowing increased flexibility in use, but also satisfying aesthetic demands of consumers on product appearance.

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Inventors:
LIN JHE-SYUAN (CN)
HSIAO CHIA-YUAN (CN)
YEH CHUN-HUNG (CN)
Application Number:
PCT/CN2018/000023
Publication Date:
July 11, 2019
Filing Date:
January 22, 2018
Export Citation:
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Assignee:
FOCALTECH SMART SENSORS CO LTD (CN)
International Classes:
G06K9/00
Foreign References:
CN103019474A2013-04-03
CN101256623A2008-09-03
CN101034332A2007-09-12
CN101789074A2010-07-28
US4868551A1989-09-19
Attorney, Agent or Firm:
KELONG INTERNATIONAL INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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