Polarization structure and liquid crystal display device having the same

• US 20080252815A1
• Filed: 04/13/2007
• Published: 10/16/2008
• Est. Priority Date: 04/13/2007
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Huang, Ping-Wen, Wang, Po-Hsien, Yang, Hong-En, Tsai, Wen-Jung, Lin, Wei-Lung
• Application Number:
  US11/785,018
• Publication Number:
  US 20080252815A1
• Time in Patent Office: Days
• US Class Current: 349/64
• CPC Class Codes: G02B 5/0242 by means of dispersed particles
• CPC Class Codes: G02B 5/0278 used in transmission
• CPC Class Codes: G02B 5/0294 adapted to provide an additional optical effect, e.g. anti-reflection or filter
• CPC Class Codes: G02B 5/3025 Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state G02B5/3008, G02B5/3016 take precedence
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133606 including a specially adapted diffusing, scattering or light controlling members
• CPC Class Codes: G02F 1/13363 Birefringent elements, e.g. for optical compensation
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements

Abstract

A polarization structure and a liquid crystal display device having the same are provided. The polarization structure includes a polarizing film, a phase compensation film layer, and a diffusing adhesive layer. The phase compensation film layer is disposed on the polarizing film, and the diffusing adhesive layer is disposed on one side of the phase compensation film layer opposite to the polarizing film. The diffusing adhesive layer has an adhesive material and a plurality of diffusing particles added into the adhesive material.

Claims

1. A polarization structure, comprising:

a polarizing film;

a phase compensation film layer disposed on one side of the polarizing film; and

a diffusing adhesive layer disposed on one side of the phase compensation film layer opposite to the polarizing plate and having a plurality of diffusing particles.

2. The polarization structure as claimed in claim 1, wherein the rate of diffusion of the diffusing particles is in a range of 40% to 80%.

3. The polarization structure as claimed in claim 1, wherein the diffusing adhesive layer further comprises an adhesive material in which the diffusing particles are added.

4. The polarization structure as claimed in claim 1, further comprising a brightness enhancement film disposed on one side of the diffusing adhesive layer opposite to the phase compensation film layer, or disposed between the diffusing adhesive layer and the phase compensation film layer.

5. The polarization structure as claimed in claim 1, further comprising an optical compensation film disposed on one side of the diffusing adhesive layer opposite to the phase compensation film layer, or disposed between the diffusing adhesive layer and the phase compensation film layer, or disposed on one side of the polarizing film opposite to the phase compensation film layer.

6. A polarization structure, comprising:

a polarizing film;

a diffusing adhesive layer having a plurality of diffusing particles; and

a phase compensation film layer adhered to the polarizing film by the use of the diffusing adhesive layer.

7. The polarization structure as claimed in claim 6, wherein the rate of diffusion of the diffusing particles is in a range of 40% to 80%.

8. The polarization structure as claimed in claim 6, wherein the diffusing adhesive layer further comprises an adhesive material in which the diffusing particles are added.

9. The polarization structure as claimed in claim 6, further comprising a brightness enhancement film disposed on one side of the phase compensation film layer opposite to the diffusing adhesive layer.

10. The polarization structure as claimed in claim 6, further comprising an optical compensation film disposed on one side of the phase compensation film layer opposite to the diffusing adhesive layer, or disposed on one side of the polarizing film opposite to the diffusing adhesive layer.

11. A polarization structure, comprising:

a polarizing film;

a phase compensation film layer disposed on one side of the polarizing film; and

a diffusing adhesive layer disposed on one side of the polarizing plate opposite to the phase compensation film layer and having a plurality of diffusing particles.

12. The polarization structure as claimed in claim 11, wherein the rate of diffusion of the diffusing particles is in a range of 40% to 80%.

13. The polarization structure as claimed in claim 11, wherein the diffusing adhesive layer further comprises an adhesive material in which the diffusing particles are added.

14. The polarization structure as claimed in claim 11, further comprising a brightness enhancement film disposed on one side of the phase compensation film layer opposite to the polarizing film.

15. The polarization structure as claimed in claim 11, further comprising an optical compensation film disposed on one side of the phase compensation film layer opposite to the polarizing film, or disposed between the diffusing adhesive layer and the polarizing film, or disposed on one side of the diffusing adhesive layer opposite to the polarizing film.

16. A liquid crystal display (LCD) device, comprising:

a backlight module;

a lower polarization structure disposed on one side of the backlight module and having a diffusing adhesive layer in which a plurality of diffusing particles is added;

an LCD panel disposed on one side of the lower polarization structure opposite to the backlight module; and

an upper polarization structure disposed on one side of the LCD panel opposite to the lower polarization structure.

17. The LCD device as claimed in claim 16, wherein the rate of diffusion of the diffusing particles is in a range of 40% to 80%.

18. The LCD device as claimed in claim 16, wherein the lower polarization structure further comprises:

a diffusing adhesive layer disposed on one side of the LCD panel opposite to the upper polarization structure and having an adhesive material in which the diffusing particles are added;

a phase compensation film layer disposed on one side of the diffusing adhesive layer opposite to the LCD panel; and

a polarizing film disposed on one side of the phase compensation film layer opposite to the LCD panel.

19. The LCD device as claimed in claim 18, wherein the lower polarization structure further comprises a brightness enhancement film disposed on one side of the diffusing adhesive layer opposite to the phase compensation film layer, or disposed between the diffusing adhesive layer and the phase compensation film layer.

20. The LCD device as claimed in claim 18, wherein the lower polarization structure further comprises an optical compensation film disposed on one side of the diffusing adhesive layer opposite to the phase compensation film layer, or disposed between the diffusing adhesive layer and the phase compensation film layer, or disposed on one side of the polarizing film opposite to the phase compensation film layer.

21. The LCD device as claimed in claim 16, wherein the lower polarization structure further comprises:

a phase compensation film layer disposed on one side of the LCD panel opposite to the upper polarization structure; and

a polarizing film disposed on one side of the phase compensation film layer opposite to the LCD panel and being adhered to the phase compensation film layer by use of the diffusing adhesive layer;

wherein the diffusing adhesive layer has an adhesive material in which the diffusing particles are added.

22. The LCD device as claimed in claim 21, wherein the lower polarization structure further comprises a brightness enhancement film disposed on one side of the phase compensation film layer opposite to the diffusing adhesive layer.

23. The LCD device as claimed in claim 21, wherein the lower polarization structure further comprises an optical compensation film disposed on one side of the phase compensation film layer opposite to the diffusing adhesive layer, or disposed on one side of the polarizing film opposite to the diffusing adhesive layer.

24. The LCD device as claimed in claim 16, wherein the lower polarization structure further comprises:

a phase compensation film layer disposed on one side of the LCD panel opposite to the upper polarization structure; and

a polarizing film disposed on one side of the phase compensation film layer opposite to the LCD panel; and

a diffusing adhesive layer disposed on one side of the polarizing film opposite to the phase compensation film layer and having an adhesive material in which the diffusing particles are added.

25. The LCD device as claimed in claim 24, wherein the lower polarization structure further comprises a brightness enhancement film disposed on one side of the phase compensation film layer opposite to the polarizing film.

26. The LCD device as claimed in claim 24, wherein the lower polarization structure further comprises an optical compensation film disposed on one side of the phase compensation film layer opposite to the polarizing film, or disposed between the diffusing adhesive layer and the polarizing film, or disposed on one side of the diffusing adhesive layer opposite to the polarizing film.