OPTICAL FILM AND DISPLAY DEVICE

• US 20170115516A1
• Filed: 02/23/2016
• Published: 04/27/2017
• Est. Priority Date: 10/22/2015
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd., Samsung SDI Company Limited
• Original Assignee: Samsung Electronics Co. Ltd., Samsung SDI Company Limited
• Inventors: WON, Jong Hoon, GAM, Sangah, KONG, Hye Young, KIM, Hyung Jun, JUNG, Myungsup
• Application Number:
  US15/050,886
• Publication Number:
  US 20170115516A1
• Time in Patent Office: Days
• CPC Class Codes: G02B 5/305 including organic materials, e.g. polymeric layers
• CPC Class Codes: G02B 5/3058 comprising electrically conductive elements, e.g. wire grids, conductive particles
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133536 Reflective polarizers G02F1/13362 takes precedence

Abstract

An optical film including an elongation film including a hydrophobic polymer and a dichroic dye, and a brightness enhancement film disposed on the elongation film.

Claims

1. An optical film comprising:

an elongation film comprising a hydrophobic polymer and a dichroic dye, and

a brightness enhancement film disposed on the elongation film.

2. The optical film of claim 1, wherein the elongation film is a melt-blend of the hydrophobic polymer and the dichroic dye, and wherein the elongation film is elongated in a uniaxial direction.

3. The optical film of claim 1, wherein the hydrophobic polymer comprises a polyolefin, a polyamide, a polyester, a polyacryl, a polystyrene, a copolymer thereof, or a combination thereof.

4. The optical film of claim 1, wherein the dichroic dye is represented by Chemical Formula 1:

5. The optical film of claim 1, wherein the elongation film has a thickness of less than or equal to about 50 micrometers.

6. The optical film of claim 1, wherein the brightness enhancement film comprises a plural layer having different refractive indices.

7. The optical film of claim 1, wherein the brightness enhancement film comprises a plurality of light transmittance particulates.

8. The optical film of claim 1, wherein the brightness enhancement film comprises a plurality of anisotropic particles.

9. The optical film of claim 1, wherein the brightness enhancement film comprises a liquid crystal.

10. The optical film of claim 1, wherein the brightness enhancement film comprises a nano wire grid polarizer.

11. The optical film of claim 1, wherein the brightness enhancement film comprises a multi-layered reflection polarizer.

12. The optical film of claim 1, wherein the elongation film and the brightness enhancement film are directly bonded to each other or are interposed by an adhesive or a bonding agent.

13. The optical film of claim 1, wherein the optical film satisfies transmittance of about 20% to about 50% and a degree of polarization of greater than or equal to about 90%.

14. The optical film of claim 1, wherein the optical film has a thickness of about 30 micrometers to about 100 micrometers.

15. A display device comprising:

a display panel, and

the optical film of claim 1 disposed on the display panel.

16. The display device of claim 15, wherein the display panel is a liquid crystal display panel or an organic light emitting display panel.

17. A display device comprising:

a light source,

a liquid crystal display panel, and

the optical film of claim 1 disposed between the light source and the liquid crystal display panel.

18. The display device of claim 17, wherein the elongation film is disposed on the liquid crystal display panel, and

the brightness enhancement film is disposed on the light source.