US 7,924,369 B2 · Light guide plate structure and back light module

Abstract

A structure of a light guide plate comprising a light guide plate and a plurality of transparent elements is disclosed. The light guide plate comprises at least onelight incident surface, a light scattering surface and a light emitting surface. The light scattering surface has a plurality of notches and these transparent elements are disposed therein. The transparent elements refractive index is different from that of the light guide plate. By disposing these transparent elements, the light scattering surface can improve light scattering effect. In addition, a back light module comprising a linearlight source and a light guide plate structure mentioned above is also disclosed. The linearlight source is disposed next to the light incident surface of the light guide plate.

Claims20

Dependent claims

A back light device, comprising:

a light guide plate comprising a first solid material and including a light scattering surface and a light emitting surface, wherein the light scattering surface has a plurality of notches formed therein;
and
transparent element structures comprising a second solid material which is different than the first solid material, wherein each of the transparent element structures are partially disposed into a corresponding one of the plurality of notches and have solid side walls that extend outside of the light guide plate, and wherein the transparent element structures are configured to receive light from the light guide plate and reflect the light to the light emitting surface of the light guide plate with a bottom surface of the transparent element structures.

Dependencies are inferred from the claim text.

Light guide plate structure and back light module

Life of this patent

Light guide plate structure and back light module

Life of this patent

Abstract

Claims20