Active matrix display compensating method

Details Active matrix display compensating method Active matrix display compensating method

2011-04-19

2011-04-19

Dinh, Duc Q. (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S076000, C345S690000, C315S169300

Reexamination Certificate

active

07928936

ABSTRACT:
Compensating for changes in the threshold voltage of the drive transistor of an OLED drive circuit, the drive transistor includes a first electrode, second electrode, and gate electrode; connecting a first voltage source to the first electrode, and an OLED device to the second electrode and to a second voltage source; providing a test voltage to the gate electrode and connecting to the OLED drive circuit, a test circuit, that includes an adjustable current mirror causing voltage applied to the current mirror, to be at a first test level; providing a test voltage to the gate electrode of the drive transistor and connecting the test circuit to the OLED device producing a second test level after the drive transistor and the OLED device age; and using the first and second test levels to calculate changes in the voltage applied to the gate electrode of the drive transistor to compensate for drive transistor aging.

REFERENCES:
patent: 6501230 (2002-12-01), Feldman
patent: 6911781 (2005-06-01), Yamazaki et al.
patent: 7046220 (2006-05-01), Tagawa et al.
patent: 7224332 (2007-05-01), Cok
patent: 7233302 (2007-06-01), Ishizuka
patent: 7319444 (2008-01-01), Jo
patent: 7345660 (2008-03-01), Mizukoshi et al.
patent: 7479955 (2009-01-01), Yoshida
patent: 1 480 195 (2004-11-01), None
Goh et al., A New a-Si:H Thin-Film Transistor Pixel Circuit for Active-Matrix Organic Light-Emitting Diodes, IEEE Electron Device Letters, vol. 24, No. 9, pp. 583-585.
J. H. Jung et al., Development of a 14.1 inch Full Color AMOLED Display with Top Emission Structure, IMID 05 Digest, pp. 793-796.
Shahin Jafarabadiashtiani et al., “P-25: A New Driving Method for a-Si AMOLED Displays Based on Voltage Feedback”, SID International Symposium, (2005), pp. 316-319.

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