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Patent Searching and Data


Title:
FINGERPRINT PHOTOCURRENT DETECTION UNIT, FINGERPRINT IDENTIFIER, DRIVING METHOD AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/050035
Kind Code:
A1
Abstract:
Disclosed are a fingerprint photocurrent detection unit, a fingerprint identifier, a driving method and a display device. The fingerprint photocurrent detection unit comprises: a conversion circuit (11) connected to a fingerprint photocurrent reading line (RL) and used for converting fingerprint photocurrent read by the fingerprint photocurrent reading line (RL) to a square wave signal; and a detection circuit (12) connected to the conversion circuit (11) and used for detecting the square wave signal and acquiring fingerprint photocurrent information by means of the frequency of the square wave signal.

Inventors:
DING XIAOLIANG (CN)
DONG XUE (CN)
LV JING (CN)
WANG HAISHENG (CN)
WU CHUNWEI (CN)
LIU YINGMING (CN)
LIU WEI (CN)
WANG PENGPENG (CN)
HAN YANLING (CN)
CAO XUEYOU (CN)
Application Number:
PCT/CN2017/101222
Publication Date:
March 22, 2018
Filing Date:
September 11, 2017
Export Citation:
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Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
G06K9/00; G06F3/041
Foreign References:
CN106469303A2017-03-01
CN104573649A2015-04-29
CN104516716A2015-04-15
CN105426865A2016-03-23
US20150254491A12015-09-10
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (CN)
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