Title:
PIXEL UNIT AND OUT-PIXEL ANALOG DOMAIN COMPENSATION DISPLAY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/126490
Kind Code:
A1
Abstract:
A pixel unit and an out-pixel analog domain compensation display system. The pixel unit comprises a drive transistor Q1, a second switch transistor Q2, a third switch transistor Q3, a light-emitting diode T1, a first capacitor C1 and a second capacitor C2. The display system comprises M columns of drive channels, and each column of drive channels comprises a detection unit (32) and a pixel unit, wherein the detection unit (32) comprises a source drive module (321) and a detection module (322), and the detection module (322) comprises a comparator (72). The pixel unit controls a current supplied by the drive transistor Q1 to the light-emitting diode T1, without needing to control a gate-source voltage difference of the drive transistor Q1 according to a traditional current source design solution, such that an improvement is realized on the basis of the traditional solution. The display system directly detects a threshold voltage of the drive transistor Q1 of the pixel unit and a threshold voltage change situation of an OLED by reusing existing modules, thereby optimizing the overall design of the display system.
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Inventors:
LAM HING-MO (CN)
ZHANG SHENGDONG (CN)
ZHANG MIN (CN)
JIAO HAILONG (CN)
QIU HEZI (CN)
LI CHENGLIN (CN)
ZHANG SHENGDONG (CN)
ZHANG MIN (CN)
JIAO HAILONG (CN)
QIU HEZI (CN)
LI CHENGLIN (CN)
Application Number:
PCT/CN2020/137211
Publication Date:
June 23, 2022
Filing Date:
December 17, 2020
Export Citation:
Assignee:
UNIV PEKING SHENZHEN GRADUATE SCHOOL (CN)
International Classes:
G09G3/3225; G09G3/32; G09G3/3258
Foreign References:
| CN111883062A | 2020-11-03 | |||
| CN111179842A | 2020-05-19 | |||
| CN108269537A | 2018-07-10 | |||
| CN105023539A | 2015-11-04 | |||
| CN107068064A | 2017-08-18 |
Attorney, Agent or Firm:
DHC IP ATTORNEYS (CN)
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