Samsung Electronics Co., Ltd.

Sang-yu Lee

Gi-Cherl Kim

Sang-Gil Lee

Ju-young Yoon

Hyun-jin Kim

Seok-Hyun Nam

Jong-Seo Lee

Don-Chan Cho

A backlight unit comprises an arrangement surface and a plurality of point light sources arranged on the arrangement surface, wherein the arrangement surface is divided into an array of hexagonal cells, a plurality of the cells comprising a white light providing unit. An LCD comprising a backlight unit on which a point light source is efficiently disposed and an efficient arrangement method of a point light source are provided.

Backlight unit and liquid crystal display having the same

A power supply is provided, which includes a DC-DC converter being supplied with an external DC input voltage and a first switching control signal and outputting a duty sensing signal of which a magnitude is varied in accordance with the first switching control signal, the duty sensing signal being indicative of a duty ratio of the first switching control signal, and the DC-DC converter converting the input voltage into a DC output voltage of a predetermined magnitude based on the first switching control signal; and a feedback controlling unit comparing the duty sensing signal with a first reference signal to adjust the duty ratio of the first switching control signal.

Power supply, display device, and light source driving apparatus

A DC-DC converter is provided, which includes a transformer including a primary coil and a secondary coil, a boost converter connected to the primary coil of the transformer and generating a first voltage, and a flyback converter connected to the secondary coil of the transformer and generating a second voltage.

Driving apparatus of display device and DC-DC converter

Growing community of inventors

Gyeonggi-do, South Korea

Sang-yu Lee