Optical film and optical display device including same

Patent metadata

Field	Value
Publication number	US-9487695-B2
Application number	US-201214363133-A
Country	US
Kind code	B2
Filing date	Dec 5, 2012
Priority date	Dec 5, 2011
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

The present invention relates to an optical film and an optical display apparatus including the same. The optical film may include a base film and an optical functional layer formed on the base film, wherein at least one of the base film. The optical functional layer may include a luminescent material, and the luminescent material may include at least one of a fluorescent material and a phosphorescent material.

First claim

The invention claimed is:

1. An optical film, comprising:
a base film; and
an optical functional layer formed on the base film, wherein at least one of the base film and the optical functional layer comprises a luminescent material, and the luminescent material includes at least one of 2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H,11H-10-(2-benzothiazolyl)quinolizino [9,9a,1gh] coumarin, 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran(E), N,N′-dimethyl-quinacridone, 9,10-bis[N,N-di-(p-tolyl)-amino]anthracene, 9,10-bis[phenyl(m-tolyl)-amino]anthracene, 5,6,11,12-tetraphenylnaphthacene, poly(naphthalene vinylene) (PNV), poly peri-naphthalene (PPN), tris[2-(p-tolyl)pyridine]iridium(III), bis[3,5-difluoro-2-(2-pyridyl)phenyl](2-carboxypyridyl)iridium(III), tris(2-phenylpyridine)iridium(III), and a mixture thereof,
wherein the optical functional layer comprises at least one optical pattern selected from prisms, lenticular lenses, micro-lenses, and embossed shapes.

2. The optical film according to claim 1 , wherein the luminescent material has an absorption wavelength from about 240 nm to about 380 nm or from about 420 nm to about 480 nm, and a light emission wavelength from about 520 nm to about 580 nm.

3. The optical film according to claim 1 , wherein the luminescent material further includes a UV-curable functional group.

4. The optical film according to claim 1 , wherein the at least one of the base film and the optical functional layer of the optical film comprises a fluorene group.

5. The optical film according to claim 1 , wherein the luminescent material is present in an amount of about 0.001 wt % to about 0.5 wt % in the optical film.

6. The optical film according to claim 1 , wherein the optical film is used as a prism sheet, a diffusive sheet, or a light guide plate.

7. The optical film according to claim 1 , wherein the at least one of the base film and the optical functional layer of the optical film comprises a cured product of a resin composition comprising the luminescent material, a UV-curable unsaturated compound, and an initiator.

8. The optical film according to claim 7 , wherein the UV-curable unsaturated compound comprises a fluorene derivative unsaturated resin; and at least one selected from the group consisting of phenoxybenzyl (meth)acrylate, phenylphenoxy ethyl (meth)acrylate, phenylthioethyl (meth) acrylate, and mixtures thereof.

9. The optical film according to claim 7 , wherein the composition further comprises at least one of an ester reactive additive and a silicone reactive resin.

10. A resin composition for an optical film that includes a base film and an optical functional layer on the base film, the composition comprising:
a luminescent material;
a UV-curable unsaturated compound that includes a fluorene group; and
an initiator,
wherein the luminescent material includes at least one of 2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H,11H-10-(2-benzothiazolyl)quinolizino [9,9a,1gh] coumarin, 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran(E), N,N′-dimethyl-quinacridone, 9,10-bis[N,N-di-(p-tolyl)-amino]anthracene, 9,10-bis[phenyl(m-tolyl)-amino]anthracene, 5,6,11,12-tetraphenylnaphthacene, poly(naphthalene vinylene) (PNV), poly peri-naphthalene (PPN), tris[2-(p-tolyl)pyridine]iridium(III), bis[3,5-difluoro-2-(2-pyridyfiphenyl](2-carboxypyridyl)iridium(III), tris(2-phenylpyridine)iridium(III), and a mixture thereof, and
wherein at least one of the base film and the optical functional layer comprises the luminescent material and the UV-curable unsaturated compound in a cured state.

11. The resin composition according to claim 10 , further comprising: at least one of an ester reactive resin and a silicone reactive resin.

12. The resin composition according to claim 10 , wherein the optical functional layer comprises at least one optical pattern selected from prisms, lenticular lenses, micro-lenses, and embossed shapes.

13. A liquid crystal display apparatus comprising the optical film according to claim 1 .

Assignees

• Kim Jin Woo
• Choi Moon Soo
• Kang Gi Wook
• Park Sang Cheon
• Park Chul Jin
• Kim Hyoun Young
• Eun Jong Hyuk
• Lee Gyu Cheol
• Chae Mi Young
• Cheil Ind Inc

Inventors

• Kim Jin Woo
• Choi Moon Soo
• Kang Gi Wook
• Park Sang Cheon
• Park Chul Jin
• Kim Hyoun Young
• Eun Jong Hyuk
• Lee Gyu Cheol
• Chae Mi Young

Classifications

• B32B27/308

  comprising acrylic (co)polymers · CPC title

• B32B2270/00

  Resin or rubber layer containing a blend of at least two different polymers · CPC title

• C09K2211/1037

  with sulfur · CPC title

• B32B2307/584

  Scratch resistance · CPC title

• C09K2211/1044

  containing two nitrogen atoms as heteroatoms · CPC title