Light guide plate and method for manufacturing the same, and backlight module using the same
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorGuo-Han Yue
Life of this patent
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Abstract
A light guide plate includes a light input surface, a light output surface adjoining the light input surface, and a reflecting surface opposite the light output surface. One of the light output surface and the reflecting surface defines a plurality of scattering microstructures. Each scattering microstructure includes a spherical protrusion having a substantially spherical surface, and a substantially ring-shaped groove defined around a periphery of the spherical protrusion. At least half of the spherical surface is as smooth as a mirror. A method for manufacturing the light guide plate and a backlight module using the light guide plate are also provided.
Claims9
A light guide plate comprising:
- a light input surface;
- a light output surface adjoining the light input surface;
- and
- a reflecting surface opposite the light output surface;
- wherein at least one of the light output surface and the reflecting surface defines a plurality of scattering microstructures, each scattering microstructure comprises a protrusion having an outer surface, and a groove defined around a periphery of the protrusion, at least half of the outer surface is a mirror-like surface;
- wherein the protrusion of the scattering microstructure is substantially spherical, and the groove of the scattering microstructure is substantially ring-shaped.
A backlight module comprising:
- a light source;
- and
- a light guide plate comprising
- a light input surface, the light source positioned adjacent to the light input surface;
- a light output surface adjoining the light input surface, and
- a reflecting surface opposite the light output surface;
- wherein at least one of the light output surface and the reflecting surface defines a plurality of scattering microstructures, each scattering microstructure comprising a protrusion having an outer surface, and a groove defined around a periphery of the protrusion, at least half of the outer surface is a mirror-like surface;
- wherein the protrusion of the scattering microstructure is substantially spherical, and the groove of the scattering microstructure is substantially ring-shaped.
Dependencies are inferred from the claim text.