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US 2009/0290341 A1Published application
Optical plate and backlight module using same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorSHAO-HAN CHANG
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Abstract
An exemplary optical plate includes a first surface and a second surface opposite the first surface. The first surface defines a plurality of substantially parallel elongated arc-shaped grooves therein. A plurality of substantially parallel elongated arc-shaped protrusions is formed on the second surface. An extending direction of the elongated arc-shaped grooves are substantially parallel to an extending direction of the elongated arc-shaped protrusions.
Claims18
An optical plate comprising:
- a first surface defining a plurality of substantially parallel elongated arc-shaped grooves therein and
- a second surface opposite the first surface, wherein a plurality of substantially parallel elongated arc-shaped protrusions is formed on the second surface;
- an extending direction of the elongated arc-shaped grooves is substantially parallel to an extending direction of the elongated arc-shaped protrusions.
A backlight module comprising:
- a frame;
- a plurality of light sources positioned in an inner surface of the frame;
- a light diffusion plate positioned on atop of the frame above the light sources;
- and
- an optical plate positioned on the light diffusion plate, the optical plate comprising a first surface defining a plurality of parallel elongated arc-shaped grooves therein and a second surface opposite the first surface, wherein a plurality of parallel elongated arc-shaped protrusions are formed on the second surface, and an extending direction of the elongated arc-shaped grooves are parallel to an extending direction of the elongated arc-shaped protrusions.
2 more elements
Dependencies are inferred from the claim text.