Touch panel including graphene and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9098162-B2
Application number	US-201113576795-A
Country	US
Kind code	B2
Filing date	Feb 1, 2011
Priority date	Feb 2, 2010
Publication date	Aug 4, 2015
Grant date	Aug 4, 2015

Abstract

A touch panel comprising a first substrate; a second substrate disposed facing the first substrate; a first conductive layer disposed on at least one surface of the first substrate; a second conductive layer disposed on at least one surface of the second substrate; first electrodes electrically connected to the first conductive layer; and second electrodes electrically connected to the second conductive layer, wherein at least one of the first conductive layer and the second conductive layer comprises graphene.

First claim

The invention claimed is:

1. A method of manufacturing a touch panel comprising a first substrate whereon a first conductive film is disposed, and a second substrate whereon a second conductive film facing the first conductive film is disposed, the method comprising:
preparing the first substrate and the second substrate;
forming the first conductive film and the second conductive film, wherein at least one of the first conductive film and the second conductive film is formed by transferring graphene;
forming first electrodes electrically connected to the first conductive film and forming second electrodes electrically connected to the second conductive film; and
bonding the first substrate and the second substrate,
wherein at least one of the first electrodes and the second electrodes are formed of a portion of a metal catalyst layer which remains after patterning the metal catalyst layer that is used to grow the graphene, and wherein the portion of the metal catalyst layer becomes a pattern of the electrodes.

2. The method of claim 1 , wherein at least one of the first substrate and the second substrate comprises flexible polymer.

3. The method of claim 1 , wherein the transferring of the graphene involves performing a transfer by using a tape.

4. The method of claim 1 , wherein the transferring of the graphene involves performing a transfer by coating liquefied polymer.

5. The method of claim 1 , further comprising, between the forming and the bonding, disposing a protective film on at least one of the first conductive film and the second conductive film.

6. The method of claim 5 , wherein the protective film comprises at least one of poly(3,4-ethylenedioxythiophene) (PEDOT), PEDOT/PSS, a urethane-curable resin, an organic silicate compound, a thiophene-based polymer, polypyrrole, polyaniline, a ferroelectric polymer, and a ferroelectric inorganic material.

7. The method of claim 1 , further comprising, between the forming and the bonding, disposing a plurality of spacers on at least one of the first conductive film and the second conductive film.

8. The method of claim 1 , wherein the bonding is performed by using an intermediate member.

Assignees

• Ahn Jong-Hyun
• Hong Byung-Hee
• Lee Young-Bin
• Bae Su-Kang
• Kim Hyeong-Keun
• Samsung Techwin Co Ltd
• Res & Business Foundation

Inventors

• Ahn Jong-Hyun
• Hong Byung-Hee
• Lee Young-Bin
• Bae Su-Kang
• Kim Hyeong-Keun

Classifications

• G06F3/045 Primary

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title

• Y10T156/10

  Methods of surface bonding and/or assembly therefor · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title