PIXEL CIRCUIT, DISPLAY PANEL, DISPLAY DEVICE AND DRIVING METHOD

Title:

PIXEL CIRCUIT, DISPLAY PANEL, DISPLAY DEVICE AND DRIVING METHOD

Document Type and Number:

WIPO Patent Application WO/2018/090620

Kind Code:

A1

Abstract:

A pixel circuit (100), a display panel (10), a display device (1) and a driving method. The pixel circuit (100) comprises: a driving transistor (DT), a first transistor (T1), a first capacitor (C1), an organic light-emitting diode (OLED) and a switching error compensation circuit (110). The driving transistor (DT) comprises: a first electrode connected to a first power line to receive a first power voltage (Vdd), a gate electrode connected to a first node (N1) and a second electrode connected to a second node (N2). The first transistor (T1) comprises: a first electrode connected to the second node (N2), a gate electrode connected to a first control signal line to receive a first control signal (Sn) and a second electrode connected to the first node (N1). The first capacitor (C1) comprises: a first terminal connected to the first node (N1) and a second terminal connected to a third node (N3). The OLED is configured to emit light during operation, driven by the driving transistor (DT). The switching error compensating circuit (110) is connected to the first node (N1) and/or the second node (N2), and is configured to compensate for the switching error of the first transistor (T1). The pixel circuit (100) can reduce or eliminate switching errors during the threshold compensation process, improving the display uniformity of the display panel.

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Inventors:

HUANGFU LUJIANG (CN)
ZHENG CAN (CN)
LI YUNFEI (CN)
LIU LIBIN (CN)

Application Number:

PCT/CN2017/089173

Publication Date:

May 24, 2018

Filing Date:

June 20, 2017

Export Citation:

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Assignee:

BOE TECHNOLOGY GROUP CO LTD (CN)

International Classes:

G09G3/3225

Foreign References:

CN206194348U	2017-05-24
CN101409041A	2009-04-15
CN103927975A	2014-07-16
CN101192374A	2008-06-04
CN104680977A	2015-06-03
US20030030603A1	2003-02-13

Attorney, Agent or Firm:

LIU, SHEN & ASSOCIATES (CN)

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