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US 6,788,358 B1Granted
Light unit in liquid crystal display
AssigneeLG. Philips LCD Co., Ltd.
InventorsJe Hong Kim, Seung Chul Lee
Life of this patent
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Abstract
A back light configured to have a high focusing ability is disclosed. In the unit, a light directs a light path of a light beam to the rear side thereof to obtain high focusing of the light beam. A light guide plate allows the light beam from the light input to progress in the vertical direction of a liquid crystal panel.
Claims19
A back light unit in a liquid crystal display, comprising:
- a light guide plate;
- and
- a light input device for directing light substantially to a rear side of said light input device in a direction away from the light guide plate prior to directing said light to a front side thereof and toward the light guide plate to obtain high focusing of said light, wherein substantially all of said light is directed through a substantially non-solid medium, prior to being directed toward said light guide plate.
A back light unit in a liquid crystal display comprising:
- a light guide plate;
- and
- a light input device for directing a light path from a light source toward the light-guide plate, wherein the light from the light source is passed through the light input device to be incident into the light-guide plate without being incident directly to the light-guide plate.
Dependencies are inferred from the claim text.