Power source device for driving liquid crystal

Details Power source device for driving liquid crystal Power source device for driving liquid crystal

1986-12-01

1989-09-12

Miller, Stanley D.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

350331R, 350332, 340811, 340702, 340703, G02F 113, G09G 128, G09G 300

Patent

active

048654256

ABSTRACT:
A power source device for driving a liquid crystal device comprises an inverter for powering a back-light discharge lamp and a negative voltage power source generator for driving the liquid crystal device. The negative voltage generator is provided as part of the inverter. A step-up transformer of the inverter is commonly used as part of the negative voltage power source generator.

REFERENCES:
patent: 3986022 (1976-10-01), Hyatt
patent: 4037931 (1977-07-01), Ito et al.
patent: 4139278 (1979-02-01), Matsumoto et al.
patent: 4205311 (1980-05-01), Kutaragi
patent: 4698668 (1987-10-01), Milgram

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