Back light unit and liquid crystal display employing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJi-whan Noh, Ki-bum Seong
Life of this patent
Estimating the term…
Abstract
A direct type backlight unit for improving high uniformity through a reflection barrier wall having a curved surface and a liquid crystal display employing the same are provided. The backlight unit includes: a base plate; a plurality of point light sources arranged in a plurality of lines on the base plate; a diffusion plate which diffuses light emitted from the plural of point light sources and generates a uniform light; and a reflection barrier wall, having a curved reflection surface, which reflects the light emitted from the point light source to the diffusion plate.
Claims18
A backlight unit comprising:
- a base plate;
- a plurality of point light sources arranged in a plurality of lines on the base plate;
- a diffusion plate which diffuses light emitted from the plurality of point light sources to generate a uniform light;
- and
- a reflection barrier wall, having a curved reflection surface, which reflects the light emitted from the point light sources to the diffusion plate.
A liquid crystal display having a liquid crystal panel and a backlight arranged at the rear of the liquid crystal panel, wherein the backlight unit includes:
- a base plate;
- a plurality of point light sources arranged in a plurality of lines on the base plate;
- a diffusion plate which diffuses light emitted from the plurality of point light sources to generate a uniform light;
- and
- a reflection barrier wall, having a curved reflection surface, which reflects the light emitted from the point light sources to the diffusion plate.
A method of operating a liquid crystal display, comprising:
- illuminating a liquid crystal panel with a backlight unit comprising:
- a base plate, a plurality of point light sources arranged in a plurality of lines on the base plate, a diffusion plate, and a reflection barrier wall, having a curved reflection surface, formed between at least two lines of the plurality of light sources, thereby dividing the plurality of light sources into two or more luminance areas;
- sequentially turning on the point light sources of the two or more luminance areas based on a predetermined time delay.
Dependencies are inferred from the claim text.