Title:
PIXEL INTERNAL COMPENSATION CIRCUIT AND DRIVING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/037302
Kind Code:
A1
Abstract:
A pixel internal compensation circuit. The pixel internal compensation circuit comprises: a first film transistor (T1), wherein a gate electrode thereof is connected to a third control signal (SCAN3), and a source electrode and a drain electrode thereof are connected to a data voltage (Vdata) and a first node (A); a second film transistor (T2), wherein a gate electrode thereof is connected to the first node (A), and a source electrode and a drain electrode thereof are connected to a second node (B) and a high power supply potential (OVDD); a third film transistor (T3), wherein a gate electrode thereof is connected to a first control signal (SCAN1), and a source electrode and a drain electrode thereof are connected to the first node (A) and a reference potential (Vref); a fourth film transistor (T4), wherein a gate electrode thereof is connected to a second control signal (SCAN2), and a source electrode and a drain electrode thereof are connected to the second node (B) and an initial potential (Vini); a capacitor (C1) connected to the first node (A) and the second node (B); and an OLED connected to the second node (B) and a low power supply potential (OVSS). Further provided is a method for driving a pixel internal compensation circuit. The circuit and driving method can effectively increase the detection time of threshold voltage compensation by means of parallel driving, thereby improving the compensation effect.
Inventors:
HE JIAN (CN)
SYU SHENSIAN (CN)
SYU SHENSIAN (CN)
Application Number:
PCT/CN2017/111407
Publication Date:
February 28, 2019
Filing Date:
November 16, 2017
Export Citation:
Assignee:
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
G09G3/3233
Foreign References:
| CN104751804A | 2015-07-01 | |||
| CN104715726A | 2015-06-17 | |||
| CN1815538A | 2006-08-09 | |||
| CN102982767A | 2013-03-20 | |||
| CN104157240A | 2014-11-19 | |||
| CN105161051A | 2015-12-16 | |||
| CN105427803A | 2016-03-23 | |||
| CN105427809A | 2016-03-23 | |||
| CN106297662A | 2017-01-04 | |||
| CN106531074A | 2017-03-22 | |||
| US20110164016A1 | 2011-07-07 |
Attorney, Agent or Firm:
COMIPS INTELLECTUAL PROPERTY OFFICE (CN)
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