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US 8,075,174 B2Granted
Light guide plate microstructure
AssigneeAu Optronics Corporation
InventorsShau-Yu Tsai, Super Liao
Life of this patent
Estimating the term…
Abstract
A light guide plate microstructure is provided. The light guide plate microstructure is located on at least one surface of the light guide plate and has a plurality of groove units. Each groove unit has multiple V-shaped grooves, and each V-shaped groove has an apex angle within a range of about 80°-160°. Furthermore, at least two of the V-shaped grooves of a groove unit have different apex angles.
Claims14
A light guide plate microstructure, located on at least one surface of a light guide plate, comprising:
- a plurality of groove units located continuously or discontinuously on at least one surface of the light guide plate, wherein each of the groove units comprises a plurality of V-shaped grooves, and wherein each of the V-shaped grooves has an apex angle within a range of about 80° -160° , wherein at least two of the V-shaped grooves of a groove unit have different apex angles, wherein a distance between a start point of one groove unit and a start point of the next groove unit is at most about 400 μm.
A light guide plate, comprising:
- a top surface having a light guide plate microstructure disposed thereon, wherein the light guide plate microstructure comprises a plurality of groove units located continuously or discontinuously on at least one surface of the light guide plate, wherein each of the groove units comprises a plurality of V-shaped grooves, wherein each of the V-shaped grooves has an apex angle within a range of about 80° -160° , wherein at least two of the V-shaped grooves of a groove unit have different apex angles, wherein a distance between a start point of one groove unit and a start point of the next groove unit is at most about 400 μm;
- a bottom surface opposite to the top surface;
- and
- a light incident lateral surface between the top surface and the bottom surface.
1 more element
A backlight module, comprising:
- a light guide plate having a light guide plate microstructure disposed on at least one surface thereof, wherein the light guide plate microstructure comprises a plurality of groove units located continuously or discontinuously on at least one surface of the light guide plate, wherein each of the groove units comprises a plurality of V-shaped grooves, wherein each of the V-shaped grooves has an apex angle within a range of about 80° to 160° , wherein at least two of the V-shaped grooves of a groove unit have different apex angles, wherein a distance between a start point of one groove unit and a start point of the next groove unit is at most about 400 μm;
- and
- a plurality of LED light sources located on a light incident lateral surface of the light guide plate.
Dependencies are inferred from the claim text.