Method and apparatus for lighting an EL element

Details Method and apparatus for lighting an EL element Method and apparatus for lighting an EL element

1995-02-03

1996-12-03

Gonzalez, Frank

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

315160, 3151691, 315174, 315176, G09G 310

Patent

active

055811604

ABSTRACT:
An electroluminescence (EL) element lighting device for an EL element, includes a first circuit for self-oscillating to generate a first signal having a first frequency, and for gradually charging up said EL element in response to the first signal, and a second circuit for self-oscillating to generate a second signal having a second frequency, and for discharging the charge stored in said EL element in response to the second signal. The first frequency of the first signal is greater than the second frequency of the second signal, and the second signal is active only during a time interval less than 50% of each period of the second signal.

REFERENCES:
patent: 5172032 (1992-12-01), Alessio
patent: 5313141 (1994-05-01), Kimball
patent: 5349269 (1994-09-01), Kimball
patent: 5502357 (1996-03-01), Kimball

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