Title:
PIXEL DRIVING CIRCUIT, DRIVING METHOD THEREOF, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/155597
Kind Code:
A1
Abstract:
A pixel driving circuit (10), a driving method thereof, and a display device (702). The pixel driving circuit (10) includes: a driving transistor (TD); a voltage holding sub-circuit (11), the first end of the voltage holding sub-circuit (11) connected to the gate (26) of the driving transistor (TD); a data writing sub-circuit (121 and 122) configured to supply a data voltage (Vdata) to the driving transistor (TD) when the first scanning line (S1) is at a first level, and connect the gate (26) of the driving transistor (TD) and a second end (24); a converting sub-circuit (131 and 132) configured to supply an illumination power voltage (Vdd) to a second end of the voltage holding sub-circuit (11) when the second scanning line (S2) is at the first level, and connect the second end of the voltage holding sub-circuit (11) to the second end (24) of the driving transistor (TD) when the third scanning line (S3) is at the first level; and a switch sub-circuit (141 and 142) configured to supply the illumination power voltage (Vdd) to the first end (22) of the driving transistor (TD) when the third scanning line (S3) is at the first level, and connect the second end (24) of the driving transistor (TD) to the current output end (Iout) of the pixel driving circuit (10). The pixel driving circuit (10) can achieve threshold voltage compensation for the driving transistor (TD).
Inventors:
HUANG SHIQIANG (CN)
HU WEI (CN)
LIN HUICHE (CN)
YANG JIE (CN)
HU WEI (CN)
LIN HUICHE (CN)
YANG JIE (CN)
Application Number:
PCT/CN2019/099438
Publication Date:
August 06, 2020
Filing Date:
August 06, 2019
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
CHONGQING BOE OPTOELECTRONICS TECH CO LTD (CN)
CHONGQING BOE OPTOELECTRONICS TECH CO LTD (CN)
International Classes:
G09G3/32
Foreign References:
| CN108492780A | 2018-09-04 | |||
| CN1794327A | 2006-06-28 | |||
| CN105679245A | 2016-06-15 | |||
| CN108962143A | 2018-12-07 | |||
| CN103295524A | 2013-09-11 | |||
| CN108735155A | 2018-11-02 | |||
| CN107358917A | 2017-11-17 | |||
| US20080170008A1 | 2008-07-17 |
Attorney, Agent or Firm:
TEE & HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
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