Title:
PIXEL CIRCUIT AND DRIVING METHOD THEREFOR, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/062813
Kind Code:
A1
Abstract:
The present application relates to a pixel circuit and a driving method therefor, and a display device. The pixel circuit comprises a transistor T1, a transistor T2, a transistor T3, a transistor T4, a transistor T5, a transistor T6, a transistor T7, a capacitor C1, and an organic light-emitting diode (OLED). In a light-emitting phase, the transistor T5 is turned on by a light-emitting control signal, and a potential of a first pole of the transistor T1 is changed from a data voltage Vdata into a first power supply voltage VDD; since the transistors T3 and the transistors T4 are in off states, the electric quantity of the capacitor C1 remains unchanged, and the potential of a control terminal of the transistor T1 is changed from Vdata-|Vth| to Vdata-|Vth|+η(VDD-Vdata), coefficients in a formula of currents flowing through the OLED are (η-1)2. Data voltage Vdata values respectively corresponding to adjacent grayscales can be different because η is close to 1, thereby solving the technical problem that a grayscale is hard to unfold.
Inventors:
ZHU ZHENGYONG (CN)
SUN GUANGYUAN (CN)
ZHU HUI (CN)
SUN GUANGYUAN (CN)
ZHU HUI (CN)
Application Number:
PCT/CN2019/080183
Publication Date:
April 02, 2020
Filing Date:
March 28, 2019
Export Citation:
Assignee:
KUNSHAN GOVISIONOX OPTOELECTRONICS CO LTD (CN)
International Classes:
G09G3/3208; G09G3/3266; G09G3/3283
Foreign References:
| CN109166522A | 2019-01-08 | |||
| CN106910468A | 2017-06-30 | |||
| CN107274830A | 2017-10-20 | |||
| US20160171927A1 | 2016-06-16 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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