Title:
FEEDBACK SIGNAL DETECTION METHOD AND DISPLAY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/061996
Kind Code:
A1
Abstract:
The present invention provides a feedback signal detection method and a display system. The system comprises M columns of drive channels, wherein each column of drive channels comprises a pixel unit and a detection unit; the detection unit comprises a source drive module and a detection module; the source drive module comprises a digital-to-analog converter, and the detection module comprises a comparator; the digital-to-analog converter is connected to a pixel unit by means of a display signal line; a first input end of the comparator is connected to the pixel unit by means of a feedback signal line and used for receiving a feedback voltage corresponding to a feedback signal of the pixel unit; a second input end of the comparator is connected to a reference digital-to-analog converter and used for receiving a comparison voltage outputted by the reference digital-to-analogue converter; and an output end of the comparator is used for outputting a detection result obtained by comparing the feedback voltage with the comparison voltage. The display system of the present invention uses a digital domain compensation method, and uses a digital-to-analog converter in conjunction with a comparator to detect the ageing information fed back, so that various detections can be performed on devices such as a TFT, an OLED and a QLED.
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/CN2020/121565
Publication Date:
March 31, 2022
Filing Date:
October 16, 2020
Export Citation:
Assignee:
UNIV PEKING SHENZHEN GRADUATE SCHOOL (CN)
International Classes:
G09G3/3233; G09G3/00
Foreign References:
| CN112164358A | 2021-01-01 | |||
| CN105023539A | 2015-11-04 | |||
| CN105702206A | 2016-06-22 | |||
| CN103268756A | 2013-08-28 | |||
| CN105206224A | 2015-12-30 | |||
| US20150077414A1 | 2015-03-19 | |||
| US20180005557A1 | 2018-01-04 |
Attorney, Agent or Firm:
DHC IP ATTORNEYS (CN)
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