US 7,607,813 B1 · Backlight module

Abstract

A backlight module includes a light source and an integrated optical film. The integrated optical film includes a base, a brightness enhancement layer and a diffusion layer. The base has a first surface and a second surface opposite to each other. The brightness enhancement layer has a plurality of brightness enhancement columns and a plurality of diffusion particles. The brightness enhancement columns are disposed on the first surface. The diffusion particles are dispersed in the brightness enhancement columns. The diffusion layer has a plurality of granular patterns disposed on the second surface in an irregular arrangement. Light beams emitted from the light source pass through the diffusion layer, the base and the brightness enhancement layer in proper order.

Claims16

Dependent claims

A backlight module comprising:

a light source;
a diffusion plate disposed on the light source, wherein the diffusion plate has a light incident surface and a light emitting surface opposite to the light incident surface, and the light incident surface faces the light source;
and
an integrated optical film disposed on the diffusion plate and comprising:
a base having a first surface and a second surface opposite to each other, wherein the second surface faces the light emitting surface of the diffusion plate;
a brightness enhancement layer having a plurality of brightness enhancement columns and a plurality of diffusion particles, wherein the brightness enhancement columns are disposed on the first surface and the diffusion particles are dispersed in the brightness enhancement columns;
and
a diffusion layer having a plurality of granular patterns disposed on the second surface in an irregular arrangement.

5 more elements

Dependencies are inferred from the claim text.

Backlight module

Life of this patent

Backlight module

Life of this patent

Abstract

Claims16