Optical plate and backlight module using the same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorShao-Han Chang
Life of this patent
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Abstract
An exemplary optical plate includes one or more transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of spherical depressions, a plurality of enclosing V-shaped protrusions, and one or more lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical depressions are formed on the light output surface. The enclosing V-shaped protrusions are formed on the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
Claims18
An optical plate comprising:
- at least one transparent plate unit having:
- a first surface;
- a second surface opposite to the first surface;
- a plurality of enclosing V-shaped protrusions formed on the first surface;
- a plurality of spherical depressions defined in the second surface;
- and
- at least a lamp-receiving portion defined in at least one of the first surface and the second surface, wherein each enclosing V-shaped protrusion forms a wall surrounding the at least one lamp-receiving portion.
A backlight module comprising:
- a housing having a base and a plurality of sidewalls extending around a periphery of the base, the base and the sidewalls cooperatively forming an opening;
- at least one point light source positioned on the base, each point light source having a light-emitting portion;
- at least one reflective member is positioned above the top of the light-emitting portion;
- an optical plate positioned in the housing, the optical plate including at least one transparent plate unit having:
- a first surface;
- a second surface opposite to the first surface;
- a plurality of enclosing V-shaped protrusions formed on the first surface;
- a plurality of spherical depressions formed in the second surface;
- and
- a lamp-receiving portion defined in at least one of the first surface and the second surface, wherein each enclosing V-shaped protrusion forms a wall surrounding the lamp-receiving portion of the first surface, and the light-emitting portion of the at least one point light source is inserted in the lamp-receiving portion;
- and
- a light diffusion plate positioned on the housing over the opening.
Dependencies are inferred from the claim text.