Light guide plate and surface light source device
OwnerTai-Cheng Yu, Ching Yen Lee +3inventors
InventorsTai-Cheng Yu, Ching Yen Lee, YunZhang Chen, Charles Leu, Ga-Lane Chen
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Abstract
A light guide plate (2) into which light beams are introduced from a light source (41) includes an incident surface (20) receiving the light beams from the light source; a light emitting surface (22) transmitting light beams outwardly; a bottom surface (21) opposite the light emitting surface for reflecting the light beams to the light emitting surface; and a plurality of sidewalls (24, 26, 28) perpendicular to the light emitting surface. The sidewalls have frosted surfaces for reflecting the light beams to assure output of the light beams through the light emitting surface.
Claims12
A light guide plate into which light beams are introduced from a light source comprising:
- an incident surface receiving the light beams from the light source;
- a light emitting surface transmitting the light beams therethrough;
- a bottom surface opposite to the light emitting surface for reflecting the light beams to the light emitting surface;
- and
- a plurality of sidewalls perpendicular to the light emitting surface, wherein the sidewalls have frosted surfaces for reflecting the light beams to assure that the light beams are output through the light emitting surface.
A surface light source for providing light beams to an LCD panel, comprising:
- a light source emitting light beams;
- and
- a light guide plate, which comprises:
- an incident surface receiving the light beams from the light source;
- a light emitting surface transmitting light beams therethrough;
- a bottom surface opposite to the light emitting surface for reflecting the light beams to the light emitting surface;
- and
- a plurality of sidewalls perpendicular to the light emitting surface, wherein the sidewalls have frosted surfaces for reflecting the light beams impinging on the sidewalls to assure that the light beams are output through the light emitting surface.
A light guide plate into which light beams are introduced from a light source comprising:
- an incident surface receiving the light beams from the light source;
- a light emitting surface transmitting the light beams therethrough;
- a bottom surface opposite to the light emitting surface for reflecting the light beams to the light emitting surface;
- and
- a plurality of sidewalls perpendicular to the light emitting surface, wherein at least one of the sidewalls has a frosted surface for reflecting the light beams to assure that the light beams are output through the light emitting surface.
Dependencies are inferred from the claim text.