Au Optronics Corporation

Hsing-Ju Chen

Chia-Hung Sun

Chin-Der Wey

Yi-Chun Yeh

Tsung-Shiun Lee

Cheng-Neng Liao

Chiah-Hung Sun

A lamp drive circuit used for driving a number of lamps is provided. The lamps are used in a backlight module. The backlight module is used for providing a light source when a liquid crystal display displays. The lamps are respectively electrically connected to a coil. The coils have the same number of turns and have the same magnetic circuit, so that the currents flowing through the lamps are balanced.

Lamp drive circuit for driving a number of lamps and balancing currents flowing through the lamps

A lamp drive circuit used for driving a number of lamps is provided. The lamps are used in the backlight module. The backlight module is used for providing a light source when a liquid crystal display displays. The lamps are respectively electrically connected to a coil. The coils substantially have the same coil turns and have the same magnetic circuit, so that the currents flowing through the lamps are balanced.

A lighting apparatus comprises a plurality of light sources, a power conversion circuit, a plurality of load-driving coils and a feedback generation coil. The power conversion circuit generates a driving signal for the load-driving coils to generate substantially identical driving currents for driving every light source. Furthermore, the feedback generation coil generates a feedback signal based on the inductions of the currents flowing though the plurality of load driving coils.

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Tainan County, Taiwan

Hsing-Ju Chen