Pixel circuit driving method, pixel circuit, electro-optical...

Details Pixel circuit driving method, pixel circuit, electro-optical... Pixel circuit driving method, pixel circuit, electro-optical...

2004-11-15

2009-02-10

Tran, My-Chau T (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S055000, C345S076000, C345S077000, C345S078000, C345S079000, C345S084000, C345S204000, C315S169300

Reexamination Certificate

active

07489293

ABSTRACT:
To effectively reduce or prevent the deterioration of display quality caused by the errors included in the current supplied to an electro-optical element a pixel circuit includes a capacitor C1, transistors T1and T2that constitute a current mirror, and an organic EL element OLED. When a first driving mode is set, the transistor T1functions as a programming element that writes data in the capacitor C1in accordance with data current Idata and the second transistor T2functions as a driving element that generates driving current Ioled in accordance with data stored in the capacitor C1. When the second driving mode that is alternately switched to the first driving mode in a predetermined period is set, the transistor T2functions as the programming element and the transistor T1functions as the driving element.

REFERENCES:
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patent: A-2005-505802 (2005-02-01), None
patent: WO 03/034381 (2003-04-01), None

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