Organic EL panel drive circuit and organic EL display device

Details Organic EL panel drive circuit and organic EL display device Organic EL panel drive circuit and organic EL display device

2004-07-27

2008-09-02

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C315S169300

Reexamination Certificate

active

07420529

ABSTRACT:
A transistor for detecting current generated by an output side transistor of a current mirror circuit of an organic EL panel drive circuit and a control circuit including a current driven input stage and an output stage for driving the input side transistor of the current mirror circuit are provided. The input stage of the control circuit receives the detected current and a certain reference current and the output stage of the control circuit generates a drive current, which corresponds to a difference between the detected current and the certain reference current and drives the input side transistor of the current mirror circuit. The control circuit controls the detected current in such a manner that it becomes equal to the reference current and the current distributed to terminal pins of an organic EL panel becomes the reference current or a current corresponding thereto.

REFERENCES:
patent: 7026766 (2006-04-01), Maede et al.
patent: 2003/0184236 (2003-10-01), Maede et al.
patent: 9-232074 (1997-09-01), None
patent: 10-112391 (1998-04-01), None
patent: 2001-42827 (2001-02-01), None
patent: 2001-143867 (2001-05-01), None

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