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Title:
CALIBRATION APPARATUS FOR OLED SUB-PIXEL CIRCUIT, SOURCE ELECTRODE DRIVING CIRCUIT, AND DATA VOLTAGE COMPENSATION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/215229
Kind Code:
A1
Abstract:
Disclosed are a calibration apparatus (300) associated with a sub-pixel circuit, a source electrode driving circuit, and a method for compensating data voltage applied to the data line of the sub-pixel circuit associated with a data line and a sense line. The calibration apparatus (300) includes a capacitance measurement circuit (301,603) to output a capacitance measurement voltage (Vout) related to the sense line, a charge sensing circuit (302) to sense a charge voltage on the sense line when the data line is applied with a reference data voltage, and a parameter calibrator (303,604) to calculate parameters of driving transistor (DT) in the sub-pixel circuit based on the capacitance measurement voltage (Vout), the reference data voltage, and the charge voltage, and is configured to determine electrical parameter drifts of the driving transistor (DT) for the source electrode driving circuit to determine a compensation data voltage to compensate non-uniformity of luminance due to the electrical parameter drifts.

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Inventors:
WU ZHONGYUAN (CN)
Application Number:
PCT/CN2016/111468
Publication Date:
December 21, 2017
Filing Date:
December 22, 2016
Export Citation:
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Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
G09G3/3225; G09G3/3275; H05B44/00
Foreign References:
CN106097969A2016-11-09
CN105321455A2016-02-10
CN104700772A2015-06-10
CN104700761A2015-06-10
CN105321456A2016-02-10
CN102968954A2013-03-13
EP2874141A12015-05-20
US20130285972A12013-10-31
US20160163255A12016-06-09
US20130162617A12013-06-27
US20110122119A12011-05-26
Other References:
See also references of EP 3472826A4
Attorney, Agent or Firm:
TEE & HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
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