Light guide plate and surface light source
AssigneeHon Hai Precision Ind. Co., Ltd.
InventorsTai-Cheng Yu, Charles Leu, Ga-Lane Chen
Life of this patent
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Abstract
The present invention provides a surface light source (6) using a light guide plate (2) to illuminate a liquid crystal display. The light guide plate comprises a light incident surface (21), a light-emitting surface (22) perpendicular to the light incident surface, a bottom surface (23) opposite to the light-emitting surface, and a plurality of side surfaces. An anti-reflective coating is formed on the light incident surface and the light-emitting surface. A reflective coating is formed on the bottom surface and at least one of the side surfaces. The light guide plate provides a high luminace output for the liquid crystal display.
Claims16
A light guide plate comprising:
- a light incident surface for receiving light beams;
- a light-emitting surface perpendicular to the light incident surface for emitting the light beams;
- a bottom surface opposite to the light-emitting surface;
- and
- a plurality of side surfaces perpendicular to the light-emitting surface;
- wherein an anti-reflective coating for transmitting light beams is formed on the light incident surface, and a reflective coating for reflecting light beams is formed on at least one of the side surfaces.
A surface light source comprising:
- a light source;
- and
- a light guide plate located beside the light source for transmitting the light beams from the light source, comprising:
- a light incident surface for receiving light beams;
- a light-emitting surface perpendicular to the light incident surface for emitting the light beams;
- a bottom surface opposite to the light-emitting surface;
- and
- a plurality of side surfaces perpendicular to the light-emitting surface;
- wherein an anti-reflective coating is formed on the light incident surface, and a reflective coating is formed on at least one of the side surfaces.
A light guide plate comprising:
- a light incident surface for receiving light beams;
- a light-emitting surface perpendicular to the light incident surface for emitting the light beams;
- a bottom surface opposite to the light-emitting surface;
- and
- a plurality of side surfaces perpendicular to the light-emitting surface;
- wherein an anti-reflective coating for transmitting light beams is formed on each of the light incident surface and the light-emitting surface, and a reflective coating for reflecting light beams is formed on at least one of the side surfaces other than the bottom surface.
Dependencies are inferred from the claim text.