Conductive coating liquid composition, and an antistatic film and a display device using the same

Patent metadata

Field	Value
Publication number	US-2017190922-A1
Application number	US-201615394187-A
Country	US
Kind code	A1
Filing date	Dec 29, 2016
Priority date	Dec 31, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

Provided is a display device having an antistatic film made of a conductive coating liquid composition. The conductive coating liquid composition includes 10 to 100 parts by weight of a silane sol based on 100 parts by weight of a carbon nanotube dispersion liquid composition, and 0.1 to 5 wt % of a polar solvent based on 100 wt % of the conductive coating liquid composition.

First claim

What is claimed is:

1 . A conductive coating liquid composition comprising 10 to 100 parts by weight of a silane sol based on 100 parts by weight of the carbon nanotube dispersion liquid composition, and 0.1 to 5 wt % of a polar solvent based on 100 wt % of the conductive coating liquid composition.

2 . The conductive coating liquid composition of claim 1 , wherein the polar solvent has a polarity of 10 or higher.

3 . The conductive coating liquid composition of claim 2 , wherein the polar solvent comprises at least one selected from n-methyl pyrolidone (NMP), dimethyl sulphoxide (DMSO), and dimethyl formamide (DMF).

4 . The conductive coating liquid composition of claim 1 , further comprising 0.05 to 20 wt % of carbon nanotubes, 0.02 to 40 wt % of a polyacrylic acid resin, and 50 to 99.93 wt % of a straight-chain alkanol having 2 to 5 carbon atoms based on 100 wt % of the conductive coating liquid composition.

5 . The conductive coating liquid composition of claim 1 , wherein the silane sol comprises an alkoxysilane compound, an acid catalyst, an alcohol-based solvent, and water.

6 . The conductive coating liquid composition of claim 5 , wherein the silane sol comprises 20 to 60 wt % of the alkoxysilane compound, 10 to 70 wt % of the alcohol-based solvent, and 5 to 60 wt % of water based on the total weight of the silane sol.

7 . A display device comprising an antistatic film comprising the conductive coating liquid composition according to claim 1 .

8 . A display device comprising:
a display panel on a lower polarizer; an upper polarizer on the display panel; and an antistatic film between an upper substrate of the display panel and the upper polarizer, wherein the antistatic film comprises carbon nanotubes and a silane sol, and wherein the antistatic film has a sheet resistance of 10 4 Ω/sq to 10 9 Ω/sq.

9 . The display device of claim 8 , wherein the display panel further comprises touch electrodes.

10 . The display device of claim 8 , wherein the touch electrodes are positioned in an upper or lower part of the display panel.

11 . The display device of claim 8 , wherein the carbon nanotubes have a sheet resistance of 1,000 Ω/sq to 20,000 Ω/sq.

12 . An antistatic film comprising carbon nanotubes and a silane sol, and
wherein the antistatic film has a sheet resistance of 10 4 Ω/sq to 10 9 Ω/sq.

13 . The antistatic film of claim 12 , wherein the carbon nanotubes have a sheet resistance of 1,000 Ω/sq to 20,000 Ω/sq.

Assignees

• Lg Display Co Ltd
• Nano Solution Co Ltd

Inventors

• Ko Sungwook
• Hwang Junsik
• Park Kwihong
• Kim Hyungyul
• Moon Hojun

Classifications

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• C09D7/40

  Additives · CPC title

• C09D7/63

  organic · CPC title

• G02F2202/22

  Antistatic materials or arrangements · CPC title

• C08K5/05

  Alcohols; Metal alcoholates · CPC title