Driver circuit and method for driving electroluminescent...

Details Driver circuit and method for driving electroluminescent... Driver circuit and method for driving electroluminescent...

2006-07-25

2006-07-25

Wong, Don (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S169300, C345S077000

Reexamination Certificate

active

07081720

ABSTRACT:
A method for driving an electroluminescent lamp to emit light at a brightness set level includes providing a variable bias voltage to the electroluminescent lamp. The variable bias voltage is increased with the duration of the on-time of the electroluminescent lamp. To stabilize the electroluminescent lamp at the brightness set level against aging, a closed loop control of the brightness of the electroluminescent lamp is applied, which is subject to said duration of the on-time the electroluminescent lamp.

REFERENCES:
patent: 5089748 (1992-02-01), Ihms
patent: 5336978 (1994-08-01), Alessio
patent: 5493183 (1996-02-01), Kimball
patent: 5747938 (1998-05-01), Beard
patent: 5783909 (1998-07-01), Hochstein
patent: 6127784 (2000-10-01), Grossman et al.
patent: 6337541 (2002-01-01), Dickie et al.
patent: 6353291 (2002-03-01), Borgogno et al.
patent: 6689999 (2004-02-01), Haines et al.

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