Display apparatus and backlight unit
AssigneeSamsung Electronics Co., Ltd.
InventorKyung-ock JEONG
Life of this patent
Estimating the term…
Abstract
A display apparatus and a backlight unit for lighting the display apparatus are provided. The backlight unit includes a light guide plate, a plurality of light sources which project light onto a side surface of the light guide plate, and a light guide unit which is provided in each of at least two groups of light sources. The light guide unit is disposed toward the light guide plate in order to limit diffusion of a path of the light projected onto the side surface of the light guide plate. Accordingly, the light enters the light guide plate in a narrow path in a direction that is perpendicular to the side wall of the light guide plate, so that local dimming is achieved effectively.
Claims20
A display apparatus comprising:
- a display panel;
- and
- a backlight unit which provides light to the display panel,
- wherein the backlight unit comprises:
- a light guide plate;
- a plurality of light sources which project light onto a side surface of the light guide plate and which are arranged in a plurality of groups;
- and
- a plurality of light guide units disposed on the plurality of groups of light sources,
- wherein the plurality of light guide units are positioned to limit paths of light projected onto the side surface of the light guide plate.
A backlight unit, comprising:
- a light guide plate;
- a plurality of light sources which project light onto a side surface of the light guide plate;
- and
- a plurality of light guide units disposed on the plurality of light sources,
- wherein the plurality of light guide units increases the directivity of the light projected onto the side surface of the light guide plate.
Dependencies are inferred from the claim text.