Micro-reflecting structure

• US 20060216477A1
• Filed: 12/27/2005
• Published: 09/28/2006
• Est. Priority Date: 03/25/2005
• Status: Abandoned Application

• Current Assignee: Optima Technology Corporation
• Original Assignee: Optima Technology Corporation
• Inventors: Hsieh, Hong-Chun, Peng, Chien-Chiu, Li, Hsin-Hsing
• Application Number:
  US11/318,992
• Publication Number:
  US 20060216477A1
• Time in Patent Office: Days
• US Class Current: 428/143
• CPC Class Codes: G02F 1/133504 Diffusing, scattering, diffracting elements associated to illuminating devices G02F1/133606
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: Y10T 428/24372 Particulate matter
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles

Abstract

A micro-reflecting layer of the present invention used for polarized plates and display device comprises a transparent resin layer and a plurality of micro-reflecting particles. The micro-reflecting particles are uniformly implanted into the transparent resin, and light from an external source partially passes through the micro-reflecting particles and partially is reflected by the micro-reflecting particles to display an image. Furthermore, a plurality of optical diffusing particles is also added into the micro-reflecting layer so as to uniformly diffuse the light in the micro-reflecting layer.

Claims

1. A micro-reflecting layer comprising:

a transparent resin layer with a refractive index between 1.3 and 1.6; and

a plurality of micro-reflecting particles with a refractive index between 1.3 and 1.6 and with an average radius of size between 1 μ

m and 50 μ

m are distributed inside the transparent resin layer.

2. The micro-reflecting layer according to claim 1, wherein the transparent resin layer comprises acrylic resin.

3. The micro-reflecting layer according to claim 1, wherein the micro-reflecting particles are selected from any of Aluminum oxide (A1₂O₃), Titanium dioxide (TiO₂) and Silicon dioxide (SiO₂).

4. The micro-reflecting layer according to claim 1, wherein the micro-reflecting layer is further attached on a transparent substrate.

5. The micro-reflecting layer according to claim 4, wherein the transparent substrate is selected from any of Polyethylene terephthalate (PET), Triacetyl cellulose (TAC) and Polycarbonate (PC).

6. The micro-reflecting layer for according to claim 1, wherein the weight percentage of the micro-reflecting particles in the micro-reflecting layer is between 1% and 20%.

7. The micro-reflecting layer according to claim 1, wherein a plurality of optical diffusing particles with an average radius of size between 1 μ

m and 50 μ

m is implanted into the micro-reflecting layer for diffusing the light in the micro-reflecting layer.

8. The micro-reflecting layer according to claim 7, wherein the optical diffusing particles are selected from any of Titanium dioxide (TiO₂), Silicon dioxide (SiO₂) and silica.

9. The micro-reflecting layer for according to claim 8, wherein the weight percentage of the micro-reflecting particles and optical-diffusing particles in the micro-reflecting layer is between 1% and 20%.

10. The micro-reflecting layer according to claim 8, wherein a transparent substrate is attached to the micro-reflecting layer.

11. The micro-reflecting layer according to claim 10, wherein the transparent substrate is selected from any of polyethylene terephthalate (PET), triacetyl cellulose (TAC) and polycarbonate (PC).

12. A micro-reflecting polarized plate comprising:

a polarized film; and

a micro-reflecting layer comprising a combination of a transparent substrate and a micro-reflecting layer which is attached to the polarized film;

wherein the micro-reflecting layer includes;

a transparent resin layer with a refractive index between 1.3 and 1.6;

a plurality of micro-reflecting particles with a refractive index between 1.3 and 1.6 and an average radius of size between 1 and 50 μ

m distributed in the transparent resin layer; and

13. The micro-reflecting polarized plate according to claim 12, wherein a plurality of optical diffusing particles with an average radius of size between 1 μ

m and 50 μ

m is implanted into the micro-reflecting layer for diffusing the light in the micro-reflecting layer.

14. The micro-reflecting polarized plate according to claim 12, further comprising a diffusing adhesive film and an optical brightness enhancement film between the polarized film and the micro-reflecting layer;

wherein the polarized film is attached to one side of the diffusing adhesive film;

the optical brightness enhancement film is attached to another side of the diffusing adhesive film; and

the micro-reflecting layer is attached to another side of the brightness enhancement film.

15. The micro-reflecting polarized plate according to claim 14, the polarized film comprises a polarized element sandwiched by two protective films;

the diffusing adhesive film is mixed with optically diffusible micro-particles and acrylic resin; and

the optical brightness enhancement film is formed by multiple layers with different reflective indexes.

16. The micro-reflecting polarized plate according to claim 15, further comprising a second micro-reflecting layer attached to the polarized film, wherein the second micro-reflecting layer is opposite to the micro-reflecting layer and comprises:

a transparent resin layer with a refractive index between 1.3 and 1.6;

a plurality of micro-reflecting particles with a refractive index between 1.3 and 1.6 and an average radius of size between 1 μ

m and 50 μ

m distributed in the transparent resin layer.

17. The micro-reflecting polarized plate according to claim 16, wherein a plurality of optical diffusing particles with an average radius of size between 1 μ

m and 50 μ

m implanted into the micro-reflecting layer.

18. A display device, comprising:

a backlight module for providing a source of light;

a liquid crystal panel located on one side of the backlight module and comprising a liquid crystal layer and a set of a first polarized plate and a second polarized plate used to clamp the liquid crystal layer;

wherein the second polarized plate comprises least one micro-reflecting layer coated thereon, and the micro-reflecting layer comprises;

a transparent resin layer with a refractive index between 1.3 and 1.6; and

a plurality of micro-reflecting particles with a refractive index between 1.3 and 1.6 and an average radius of size between 1 μ

m to 50 μ

m implanted into the transparent resin.

19. The display device according to claim 18, wherein the weight percentage of the micro-reflecting particles in the micro-reflecting layer is between 1% and 20%.

20. The display device according to claim 18, wherein a plurality of optical diffusing particles is implanted into the micro-reflecting layer for uniformly diffusing light in the micro-reflecting layer.