Pixel circuit, electro-optical device, and electronic apparatus

Details Pixel circuit, electro-optical device, and electronic apparatus Pixel circuit, electro-optical device, and electronic apparatus

2008-01-15

2008-01-15

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S204000, C315S169300

Reexamination Certificate

active

10813273

ABSTRACT:
To prevent degradation of quality of a displayed image by maintaining the flow of current at a constant value even when organic EL elements are degraded, a pixel circuit includes a capacitor that accumulates, when a scanning line is selected, charge in accordance with current flowing through a data line; a TFT that allows, subsequent to the selection, current I2in accordance with the accumulated charge to flow between the source and drain of the TFT; an organic EL element whose anode is connected to the drain of the TFT; a TFT that detects a voltage applied to the organic EL element and allows current I3in accordance with the applied voltage to flow between the source and drain of the TFT; and a correction circuit that generates mirror current I4of the current I3and adds the current I4to the current I2.

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patent: 6650060 (2003-11-01), Okuda
patent: 6812651 (2004-11-01), Iwata et al.
patent: 2002/0125831 (2002-09-01), Inukai et al.
patent: A-11-272223 (1999-10-01), None
patent: A-2002-215095 (2002-07-01), None
patent: A-2002-351403 (2002-12-01), None
patent: WO 98/36406 (1998-08-01), None
patent: WO 98/40871 (1998-09-01), None
patent: WO 02/077957 (2002-10-01), None

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