Stanley Electric Co., Ltd

Katsunori Kawano

Youji Oki

Uruo Kobayashi

Osamu Miyata

An inverter apparatus for converting a direct current which flows through the primary side of an output transformer to an alternating current which is outputted from the secondary side of the transformer. Switching elements are used to interrupt the flow of the direct current through the primary of the output transformer and frequency control means is provided for driving the switching elements at the resonant frequency of the resonant circuit formed by the secondary of the output transformer and the load. A circuit for altering the pulse width of the output signal is also provided for controling the power delivered to the load.

Invertor apparatus

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.

Power source device for driving liquid crystal

A liquid crystal display apparatus has a back illuminating device which is so arranged that a light emission area of a fluorescent lamp is positioned externally of a reflector, and a light guide is integrally provided at an end thereof with a folded or bent portion, an incident portion at the end of the folded or bent portion extending to that light emission area of the fluorescent lamp which is positioned externally of the reflector, to thereby guide light to a dial or indicator on the light guide.

Growing community of inventors

Tokyo, Japan

Katsunori Kawano