Organic EL element drive circuit and organic EL display...

Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device

Reexamination Certificate

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Details

C315S169400, C315S169200, C345S076000

Reexamination Certificate

active

07015647

ABSTRACT:
An organic EL element drive circuit comprises a current mirror circuit including an input side transistor supplied with a predetermined current and a plurality of output side transistors provided correspondingly to terminal pins of an organic EL display panel, for obtaining drive currents to be supplied to the respective terminal pins, a switch circuit connected in parallel to or in series with the input side transistor of the current mirror circuit, a memory for storing display data indicative of luminous intensities of the organic EL elements driven through the terminal pins and a control circuit for ON/OFF controlling the switch circuit to cut predetermined current supplied to the input side transistor when the display data stored in the memory for one horizontal display line or for a part of the one horizontal display line indicates that the organic EL elements are not to be driven.

REFERENCES:
patent: 5990629 (1999-11-01), Yamada et al.
patent: 6756738 (2004-06-01), Maede et al.
patent: 2002/0014849 (2002-02-01), Tsujikawa et al.
patent: 2003/0184236 (2003-10-01), Maede et al.
patent: 9-232074 (1997-09-01), None
patent: 2001-143867 (2001-05-01), None
patent: 2003-308043 (2003-10-01), None

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