PIXEL DRIVING CIRCUIT, DRIVING METHOD AND DISPLAY PANEL - WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD

Title:

PIXEL DRIVING CIRCUIT, DRIVING METHOD AND DISPLAY PANEL

Document Type and Number:

WIPO Patent Application WO/2020/199404

Kind Code:

A1

Abstract:

Disclosed are a pixel driving circuit (100), a driving method and a display panel (200), capable of compensating for a threshold voltage drift of a first control switch (T1), i.e. a driving transistor, and also solving the problem of liquid crystal display crosstalk generated by a data signal (VDATA) being coupled to a first power supply signal (VDD), thereby improving image quality. The pixel driving circuit (100) comprises a scanning line, a data line, an organic light-emitting diode (C), a first control switch (T1), a second control switch (T2) and a storage capacitor (C1), wherein the scanning line drives a control end of the second control switch (T2), an input end of the second control switch (T2) is connected to the data line, and an output end of the second control switch (T2) drives a control end of the first control switch (T1); a first power supply signal (VDD) drives an input end of the first control switch (T1), and the organic light-emitting diode (C) is connected between the output end of the first control switch (T1) and a second power supply signal (VSS); the storage capacitor (C1) is formed between a first reference signal (VI) and the control end of the first control switch (T1); and the first reference signal is different from the first power supply signal (VDD).

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Inventors:

HOU XUESHUN (CN)

Application Number:

PCT/CN2019/094514

Publication Date:

October 08, 2020

Filing Date:

July 03, 2019

Export Citation:

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Assignee:

WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)

International Classes:

G09G3/3225

Foreign References:

CN107305763A	2017-10-31
CN109903726A	2019-06-18
CN108364575A	2018-08-03
CN106157882A	2016-11-23
CN103927979A	2014-07-16
CN101645234A	2010-02-10
US20080291351A1	2008-11-27

Attorney, Agent or Firm:

ESSEN PATENT & TRADEMARK AGENCY (CN)

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