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1. (WO2013123795) PIXEL CELL DRIVING CIRCUIT, PIXEL CELL DRIVING METHOD, PIXEL CELL AND DISPLAY DEVICE

Pub. No.:    WO/2013/123795    International Application No.:    PCT/CN2012/086019
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Fri Dec 07 00:59:59 CET 2012
IPC: G09G 3/32
Applicants: BOE TECHNOLOGY GROUP CO., LTD.
京东方科技集团股份有限公司
CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
成都京东方光电科技有限公司
Inventors: QI, Xiaojing
祁小敬
QING, Haigang
青海刚
LI, Tianma
李天马
Title: PIXEL CELL DRIVING CIRCUIT, PIXEL CELL DRIVING METHOD, PIXEL CELL AND DISPLAY DEVICE
Abstract:
A pixel cell driving circuit, a pixel cell driving method, a pixel cell and a display device can improve brightness uniformity of an OLED panel. The pixel cell driving circuit comprises a driving thin film transistor (DTFT), a matching thin film transistor (MTFT), a signal clearing thin film transistor (ETFT), a charge control unit (31), a driving control unit (32) and a storage capacitor (Cs). The gate electrode of the driving thin film transistor (DTFT) is connected with a first end of the storage capacitor (Cs) and is connected with a driving power source (VDD) through the charge control unit (32), the source electrode of the driving thin film transistor (DTFT) is connected with a driving power source (VSS), and the drain electrode of the driving thin film transistor (DTFT) is connected with an OLED. The gate electrode and the drain electrode of the signal clearing thin film transistor (ETFT) are connected with a second end of the storage capacitor (Cs), and the source electrode of the signal clearing thin film transistor (ETFT) is connected with the gate electrode and the drain electrode of the matching thin film transistor (MTFT) and is connected with a data line through the charge control unit (31). The source electrode of the matching thin film transistor (MTFT) is connected with the second end of the storage capacitor (Cs).