BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY APPARATUS
First Claim
1. A backlight module, comprising:
- a lighting unit capable of providing an illumination beam; and
a brightness enhancement sheet, disposed at one side of the lighting unit and in a transmission path of the illumination beam, wherein the brightness enhancement sheet comprises;
a light-transmissive substrate, having a first surface and a second surface opposite to the first surface, wherein the first surface is located between the second surface and the lighting unit;
a plurality of lenses, disposed on the first surface;
a reflective layer, disposed on the second surface, wherein the reflective layer has a plurality of light-transmissive openings, the light-transmissive openings are respectively located on the optical axes of the lenses; and
a diffusion layer, disposed on the reflective layer and covering the light-transmissive openings, wherein the reflective layer is disposed between the diffusion layer and the second surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A backlight module includes a lighting unit and a brightness enhancement sheet. The brightness enhancement sheet is disposed beside the lighting unit. The brightness enhancement sheet includes a light-transmissive substrate, a plurality of lenses, a reflective layer, and a diffusion layer. The light-transmissive substrate has a first surface and a second surface opposite to the first surface. The first surface is located between the second surface and the lighting unit. The lenses are disposed on the first surface. The reflective layer is disposed on the second surface. The reflective layer has a plurality of light-transmissive openings respectively located on the optical axes of the lenses. The diffusion layer is disposed on the reflective layer and covers the light-transmissive openings. The reflective layer is disposed between the diffusion layer and the second surface. A liquid crystal display apparatus is also provided.
17 Citations
20 Claims
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1. A backlight module, comprising:
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a lighting unit capable of providing an illumination beam; and a brightness enhancement sheet, disposed at one side of the lighting unit and in a transmission path of the illumination beam, wherein the brightness enhancement sheet comprises; a light-transmissive substrate, having a first surface and a second surface opposite to the first surface, wherein the first surface is located between the second surface and the lighting unit; a plurality of lenses, disposed on the first surface; a reflective layer, disposed on the second surface, wherein the reflective layer has a plurality of light-transmissive openings, the light-transmissive openings are respectively located on the optical axes of the lenses; and a diffusion layer, disposed on the reflective layer and covering the light-transmissive openings, wherein the reflective layer is disposed between the diffusion layer and the second surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A liquid crystal display apparatus, comprising:
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a lighting unit, for providing an illumination beam; a brightness enhancement sheet, disposed at one side of the lighting unit and in a transmission path of the illumination beam, wherein the brightness enhancement sheet comprises; a light-transmissive substrate, having a first surface and a second surface opposite to the first surface, wherein the first surface is located between the second surface and the lighting unit; a plurality of lenses, disposed on the first surface; a reflective layer, disposed on the second surface, wherein the reflective layer has a plurality of light-transmissive openings, and the light-transmissive openings are respectively located on the optical axes of the lenses; and a diffusion layer, disposed on the reflective layer and covering the light-transmissive openings, wherein the reflective layer is disposed between the diffusion layer and the second surface; and a liquid crystal panel, wherein the brightness enhancement sheet is disposed between the liquid crystal panel and the lighting unit, and the second surface is located between the first surface and the liquid crystal panel. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification