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1. (WO2018196094) PIXEL DRIVING CIRCUIT, DISPLAY PANEL AND PIXEL DRIVING METHOD

Pub. No.:    WO/2018/196094    International Application No.:    PCT/CN2017/086736
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Thu Jun 01 01:59:59 CEST 2017
IPC: G09G 3/3233
G09G 3/3266
Applicants: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
深圳市华星光电技术有限公司
Inventors: CAI, Yuying
蔡玉莹
Title: PIXEL DRIVING CIRCUIT, DISPLAY PANEL AND PIXEL DRIVING METHOD
Abstract:
A pixel driving circuit, a display panel and a pixel driving method, the pixel driving circuit comprising: a drive switch (40) connected between a drive power supply and an organic light emitting diode (10); a first switch (502) connected between the drain of the drive switch (40) and the drive power supply, the first switch (502) being used for inputting a first control signal (VS1); a control circuit (30) connected to the drain and gate of the drive switch (40), the control circuit (30) being used for inputting a second control signal (VS2) and outputting compensation current (Iref) to compensate for the threshold voltage drift of the drive switch (40); and a memory unit (20) connected between the source of the second switch (504) and the gate of the drive switch (40), the memory unit (20) being used for storing the compensation voltage supplied to the drive switch (40) by the compensation current (Iref). The current of the organic light emitting diode (10) is stable, and the display brightness of the display panel is uniform.