Title:
PIXEL CIRCUIT, DRIVE METHOD THEREOF, IMAGE SENSOR, AND IMAGE ACQUISITION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/001014
Kind Code:
A1
Abstract:
A pixel circuit (10), drive method thereof, image sensor, and image acquisition device. The pixel circuit (10) comprises: an initialization module (1); an initialization storage module (6); a photoelectric conversion module (2) converting incoming light into an electrical signal; a photoelectric conversion control module (3) controlling the photoelectric conversion module (2) to convert the incoming light into the electrical signal; an output signal generation module (4) generating, according to the electrical signal from conversion of the photoelectric conversion module (2), an output signal corresponding to the incoming light for the pixel circuit (10); a compensation module (5) acquiring a threshold voltage of the output signal generation module (4); a storage module (6) storing the electrical signal from conversion of the photoelectric conversion module (2) and the threshold voltage of the output signal generation module (4); and an output control module (7) controlling the pixel circuit (10) to output the output signal corresponding to the incoming light. The compensation module (5) can compensate for voltage drifting of the threshold voltage of the output signal generation module (4), such that identical output signals are generated corresponding to identical incoming light to reduce or eliminate distortion of an acquired image.
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Inventors:
YANG SHENGJI (CN)
DONG XUE (CN)
XUE HAILIN (CN)
CHEN XIAOCHUAN (CN)
LIU YINGMING (CN)
WANG HAISHENG (CN)
DONG XUE (CN)
XUE HAILIN (CN)
CHEN XIAOCHUAN (CN)
LIU YINGMING (CN)
WANG HAISHENG (CN)
Application Number:
PCT/CN2017/086141
Publication Date:
January 04, 2018
Filing Date:
May 26, 2017
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE OPTOELECTRONICS TECH CO LTD (CN)
BEIJING BOE OPTOELECTRONICS TECH CO LTD (CN)
International Classes:
H04N5/3745
Foreign References:
| CN105933623A | 2016-09-07 | |||
| CN103595930A | 2014-02-19 | |||
| CN102930824A | 2013-02-13 | |||
| CN102202190A | 2011-09-28 | |||
| US20090309863A1 | 2009-12-17 | |||
| US20130083204A1 | 2013-04-04 |
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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