Optical plate and backlight module using the same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorShao-Han Chang
Life of this patent
Estimating the term…
Abstract
An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of microstructures and at least a lamp-receiving portion. The bottom surface is opposite to the light output surface. The microstructures are formed on the light output surface and the bottom surface respectively. Each microstructure includes at least three side surfaces connected with each other, a transverse width of each side surface decreasing along a direction away from the base surface of the microstructure. 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 light output surface;
- a bottom surface opposite to the light output surface;
- a plurality of microstructures formed on the light output surface and the bottom surface respectively, wherein each microstructure comprises at least three side surfaces connected with each other, a transverse width of each side surface decreasing along a direction away from the base surface of the microstructure;
- and
- at least a lamp-receiving portion defined in the bottom surface.
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 side-lighting type point light source disposed on the base, each point light source having a light-emitting portion;
- an optical plate positioned in the housing, the optical plate including at least one transparent plate unit having:
- a light output surface;
- a bottom surface opposite to the light output surface;
- a plurality of microstructures formed on the light output surface and the bottom surface respectively, wherein each microstructure comprises at least three side surfaces connected with each other, a transverse width of each side surface decreasing along a direction away from the base surface of the microstructure;
- and at least a lamp-receiving portion defined in the bottom surface, wherein the light-emitting portion of the at least one point light source is inserted in the lamp-receiving portion correspondingly;
- and
- a light diffusion plate disposed on the housing over the opening.
Dependencies are inferred from the claim text.