PIXEL DRIVE CIRCUIT AND DRIVE METHOD THEREFOR AND DISPLAY PANEL

Title:

PIXEL DRIVE CIRCUIT AND DRIVE METHOD THEREFOR AND DISPLAY PANEL

Document Type and Number:

WIPO Patent Application WO/2015/168954

Kind Code:

A1

Abstract:

A pixel drive circuit (20), comprising a first transistor (202), a second transistor (204), a third transistor (2142), a fourth transistor (2144), a first capacitor (206), a second capacitor (207) and an organic light emitting diode (212). A grid electrode of the first transistor (202) is connected to a scanning line (208); a drain electrode of the first transistor (202) is connected to a data line (210); a source electrode of the first transistor (202) is connected to one end of the first capacitor (206); the other end of the first capacitor (206) is connected to a grid electrode of the second transistor (204); a drain electrode of the second transistor (204) is connected to a negative electrode of the organic light emitting diode (212); a positive electrode of the organic light emitting diode (212) is used for being connected to a power line; a source electrode of the second transistor (204) is respectively connected to a drain electrode of the third transistor (2142) and a drain electrode of the fourth transistor (2144); a source electrode of the third transistor (2142) is connected to the grid electrode of the second transistor (204); a grid electrode of the third transistor (2142) and a grid electrode of the fourth transistor (2144) are used for receiving a compensation control voltage; and a source electrode of the fourth transistor (2144) is grounded. The pixel drive circuit can compensate for the drifting of a threshold voltage of the organic light emitting diode (212), thereby further improving the uniformity of the grey scale and picture of the organic light emitting diode (212).

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WO/2022/198480	ARRAY SUBSTRATE AND DISPLAY PANEL COMPRISING SAME, AND DISPLAY APPARATUS
WO/2023/050165	PIXEL CIRCUIT, DRIVING METHOD, DISPLAY SUBSTRATE, AND DISPLAY APPARATUS
WO/2023/011333	PIXEL DRIVING CIRCUIT AND DRIVING METHOD THEREFOR, AND DISPLAY PANEL

Inventors:

XU XIANGYANG (CN)

Application Number:

PCT/CN2014/077380

Publication Date:

November 12, 2015

Filing Date:

May 13, 2014

Export Citation:

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Assignee:

SHENZHEN CHINA STAR OPTOELECT (CN)

International Classes:

G09G3/3258; H01L27/32

Foreign References:

US6229506B1	2001-05-08
CN102832229A	2012-12-19
CN103545343A	2014-01-29
CN103681767A	2014-03-26
CN203179478U	2013-09-04

Attorney, Agent or Firm:

ESSEN PATENT&TRADEMARK AGENCY (CN)
深圳翼盛智成知识产权事务所(普通合伙) (CN)

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