Title:
FEEDBACK SIGNAL DETECTION METHOD AND PIXEL EXTERNAL ANALOG DOMAIN COMPENSATION DISPLAY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/061998
Kind Code:
A1
Abstract:
A feedback signal detection method and a pixel external analog domain compensation display system. The system comprises M columns of driving channels, wherein each column of driving channel comprises a pixel unit (41) and a detection unit (32); the detection unit (32) comprises a source driving module (321) and a detection module (322); the detection module (322) comprises a comparator (72); a first digital-to-analog converter (61) and a second digital-to-analog converter (62) are arranged in the source driving module (321); the source driving module (321) is connected to the pixel unit (41) by means of a display signal line (44); and a first input end of the comparator (72) is connected to the pixel unit (41) by means of a feedback signal line (45), a second input end thereof is connected to the second digital-to-analog converter (62), and an output end thereof is used for outputting a detection result. Digital-to-analog converters are matched with comparators (72) to detect aging information fed back by target pixel units (41), such that devices such as a TFT, an OLED and a QLED can be detected; and existing modules in a display system are also used, such that the area of a chip is not increased, and the overall design of the display system is optimized.
Inventors:
LAM HING-MO (CN)
ZHANG SHENGDONG (CN)
ZHANG MIN (CN)
JIAO HAILONG (CN)
HUANG JIE (CN)
QIU HEZI (CN)
LI CHENGLIN (CN)
WEN JINYUAN (CN)
ZHANG SHENGDONG (CN)
ZHANG MIN (CN)
JIAO HAILONG (CN)
HUANG JIE (CN)
QIU HEZI (CN)
LI CHENGLIN (CN)
WEN JINYUAN (CN)
Application Number:
PCT/CN2020/121593
Publication Date:
March 31, 2022
Filing Date:
October 16, 2020
Export Citation:
Assignee:
UNIV PEKING SHENZHEN GRADUATE SCHOOL (CN)
International Classes:
G09G3/32
Foreign References:
| CN105023539A | 2015-11-04 | |||
| CN109961742A | 2019-07-02 | |||
| CN101281720A | 2008-10-08 | |||
| CN102768821A | 2012-11-07 | |||
| CN104637447A | 2015-05-20 | |||
| CN110827726A | 2020-02-21 | |||
| CN103268756A | 2013-08-28 | |||
| US20060139263A1 | 2006-06-29 |
Attorney, Agent or Firm:
DHC IP ATTORNEYS (CN)
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