Nanostructure-Film LCD Devices

• US 20090147167A1
• Filed: 10/28/2008
• Published: 06/11/2009
• Est. Priority Date: 10/29/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Young-Bae
• Granted Patent: US 8,885,135 B2
• Time in Patent Office: Days
• US Class Current: 349/40
• CPC Class Codes: C09K 2323/03 Viewing layer characterised by chemical composition
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 2202/22 Antistatic materials or arrangements

Abstract

This invention relates to an LCD device comprising an electrically conductive and optically transparent nanostructure film deposited adjacent to or forming a part of at least one of a) a layer comprising triacetyl cellulose (TAC), b) a polarizing layer, c) an adhesive layer, d) a protective layer, e) an anti-glare layer f) an anti-reflective layer, or g) an antistatic layer. One embodiment is a device comprising an in plane switching (IPS) liquid crystal display (LCD) and a nanostructure film, wherein the film is electrically conductive, and wherein the film is optically transparent.

Claims

1. An LCD device comprising an electrically conductive and optically transparent nanostructure film deposited adjacent to or forming a part of at least one of a) a layer comprising triacetyl cellulose (TAC), b) a polarizing layer, c) an adhesive layer, d) a protective layer, e) an anti-glare layer f) an anti-reflective layer, or g) an antistatic layer.

2. The LCD device of claim 1, wherein the nanostructure film serves a shielding function against static electricity.

3. A device comprising:

a) an in plane switching (IPS) liquid crystal display (LCD);

b) a nanostructure film, wherein the film is electrically conductive, and wherein the film is optically transparent.

4. The device of claim 3 wherein nanostructure film serves a shielding function against static electricity.

5. The device of claim 3 wherein the nanostructure film is on a surface of a transparent substrate.

6. The device of claim 3 wherein the nanostructure film is between an upper polarizer plate and a transparent substrate or on one side of the upper polarizer plate, wherein the upper polarizer plate is at the viewed side of the LCD.

7. The device of claim 3 wherein the nanostructure film has a resistance of less than 2×

10¹⁴ ohms per square.

8. The device of claim 3 wherein the nanostructure film has a resistance of less than 2×

10⁸ ohms per square.

9. The device of claim 3 wherein the nanostructure film is embedded in an adhesive.

10. The device of claim 3 wherein the nanostructure film is patterned.

11. The device of claim 3 wherein the nanostructure film comprises nanostructures, wherein the nanostructures are aligned.

12. The device of claim 3 wherein the nanostructure film comprises nanostructures, wherein the nanostructures provide an optical polarizing effect.

13. The device of claim 6 wherein the upper polarizer plate comprises nanostructure film comprising nanostructures, wherein the nanostructures provide an optical polarizing effect.

14. The device of claim 3 further comprising a pixel electrode and a counter electrode, wherein the pixel electrode, the counter electrode, or both, comprises nanostructure film.

15. The device of claim 3, wherein the nanostructure film further comprises a dopant.

16. The device of claim 15, wherein the dopant is selected from the group consisting of Iodine (I₂), Bromine (Br₂), polymer-supported Bromine (Br₂), Antimony pentafluoride (SbF₅), Phosphorus pentachloride (PCl₅), Vanadium oxytrifluoride (VOF₃), Silver(II)Fluoride (AgF₂), 2,1,3-Benzoxadiazole-5-carboxylic acid, 2-(4-Biphenylyl)-5-phenyl-1,3,4-oxadiazole, 2,5-Bis-(4-aminophenyl)-1,3,4-oxadiazole, 2-(4-Bromophenyl)-5-phenyl-1,3,4-oxadiazole, 4-Chloro-7-chlorosulfonyl-2,1,3-benzoxadiazole, 2,5-Diphenyl-1,3,4-oxadiazole, 5-(4-Methoxyphenyl)-1,3,4-oxadiazole-2-thiol, 5-(4-Methylphenyl)-1,3,4-oxadiazole-2-thiol, 5-Phenyl-1,3,4-oxadiazole-2-thiol, 5-(4-Pyridyl)-1,3,4-oxadiazole-2-thiol, Methyl viologen dichloride hydrate, Fullerene-C60, N-Methylfulleropyrrolidine, N,N′

-Bis(3-methylphenyl)-N,N′

-diphenylbenzidine, Triethylamine (TEA), Triethanolanime (TEA)-OH, Trioctylamine, Triphenylphosphine, Trioctylphosphine, Triethylphosphine, Trinapthylphosphine, Tetradimethylaminoethene, Tris(diethylamino)phosphine, Pentacene, Tetracene, N,N′

-Di-[(1-naphthyl)-N,N′

-diphenyl]-1,1′

-biphenyl)-4,4′

-diamine sublimed grade, 4-(Diphenylamino)benzaldehyde, Di-p-tolylamine, 3-Methyldiphenylamine, Triphenylamine, Tris[4-(diethylamino)phenyl]amine, Tri-p-tolylamine, Acradine Orange base, 3,8-Diamino-6-phenylphenanthridine, 4-(Diphenylamino)benzaldehyde diphenylhydrazone, Poly(9-vinylcarbazole), Poly(1-vinylnaphthalene), Triphenylphosphine, 4-Carboxybutyl)triphenylphosphonium bromide, Tetrabutylammonium benzoate, Tetrabutylammonium hydroxide 30-hydrate, Tetrabutylammonium triiodide, Tetrabutylammonium bis-trifluoromethanesulfonimidate, Tetraethylammonium trifluoromethanesulfonate, Oleum (H₂SO₄—

SO₃), Triflic acid and Magic Acid.

17. The device of claim 15 wherein the dopant is covalently bonded to the film.

18. The device of claim 15 wherein the dopant is non-covalently bonded to the film.

19. The device of claim 15 wherein the dopant is bonded to the film in conjunction with a stabilizer.

20. The device of claim 19 wherein the stabilizer is a Lewis acid and the dopant is a Lewis base.

21. The device of claim 19 wherein the stabilizer is a Lewis base and the dopant is a Lewis acid.

22. The device of claim 19 wherein the stabilizer is a molecule selected from the group consisting of poly(4-vinylpyridine) and tri-phenyl amine.

23. The device of claim 3 wherein the nanostructure film is coated with at least one encapsulation layer.

24. The device of claim 23 wherein the encapsulation layer is a polymer selected from the group consisting of a fluoropolymer, an acrylic, a silane, a polyimide, a polyester and a polyvinylalkyl vinyl ether.

25. The device of claim 3 wherein the nanostructure film is coated film coated with two or more encapsulation layers.

26. The device of claim 25 wherein the encapsulation layer is a polymer selected from the group consisting of a fluoropolymer, an acrylic, a silane, a polyimide, a polyester and a polyvinylalkyl vinyl ether.

27. The device of claim 3 wherein the nanostructure film comprises an application-specific additive.

28. The device of claim 27 wherein the application specific additive is an infrared absorber or an ultraviolet absorber.

29. The device of claim 3, wherein the nanostructure film is on a transparent substrate, wherein the substrate is selected from the group consisting of a glass, an elastomer and a plastic.

30. The device of claim 3, wherein the nanostructure film is on a transparent substrate, wherein the substrate is an elastomer selected from the group consisting of saturated rubbers, unsaturated rubbers, thermoplastic elastomers (TPE), thermoplastic volcanizates (TPV), polyurethane rubber, polysulfide rubber, resilin and elastin.

31. The device of claim 3 wherein the nanostructure film is on a transparent substrate, wherein the substrate is a plastic selected from the group consisting of polymethyl methacrylate (PMMA), polyolefin, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polyethersulfone (PES).

32. The device of claim 3 further comprising a semiconducting element comprising nanostructure film.

33. A liquid crystal display (LCD) device comprising a nanostructure film and an adhesive, wherein the adhesive permeates the film to form a nanostructure-adhesive composite, wherein the nanostructure-adhesive composite is optically transparent and electrically conductive.

34. The LCD device of claim 33, wherein the LCD device has a device architecture selected from the group consisting of twisted nematic (TN), vertical alignment (VA), multi-domain vertical alignment (MVA), and patterned vertical alignment (PVA).

35. A LCD device comprising a nanostructure film wherein the nanostructure film is electrically conductive and optically transparent and wherein the LCD device has a device architecture selected from the group consisting of twisted nematic (TN), vertical alignment (VA), multi-domain vertical alignment (MVA), and patterned vertical alignment (PVA).