Method for manufacturing touch device and resin composition thereof

Patent metadata

Field	Value
Publication number	US-10548224-B2
Application number	US-201414502765-A
Country	US
Kind code	B2
Filing date	Sep 30, 2014
Priority date	Dec 30, 2013
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

A touch device, a method for manufacturing a touch device and a resin composition used in the method are discussed. The touch device includes a substrate including a surface roughness of less than 1.2 nm, a touch sensor formed on a surface of the substrate, and a flexible printed circuit board attached to the substrate.

First claim

What is claimed is:

1. A resin composition to prevent damage to a surface of a substrate from an etchant when an edge thereof is strengthened, the resin composition comprising:
a resin mixture in an amount of 20-50% by weight;
a solvent in an amount of 5-70% by weight;
a filler of 10˜50% by weight selected from a group consisting of calcium carbonate, barium sulfate, titanium dioxide and silica, and having an average particle size of approximately 2 μm; and
an elastomer and a photo initiator which are 1 to 50% by weight together,
wherein the resin mixture includes a phenol resin and an epoxy acrylate resin with a weight ratio of 10:90 to 90:10,
wherein the solvent is selected from a group consisting of dipropylene glycol methyl ether, butyl carbitol, and terpineol,
wherein the phenol resin and the epoxy acrylate resin with the weight ratio is 40:60 to 80:20, and
wherein the phenol resin is one of a novolac or a resole.

2. The resin composition as claimed in claim 1 , wherein the elastomer is selected from a group consisting of an EPM (Ethylene propylene rubber), an EPDM (Ethylene propylene diene monomer rubber), a silicone rubber and a nitrile rubber.

3. A resin composition to prevent damage to a surface of a substrate from an etchant when an edge thereof is strengthened, the resin composition comprising:
a resin mixture in an amount of 20-50% by weight;
a solvent in an amount of 5-70% by weight; and
a filler of 10˜50% by weight selected from a group consisting of calcium carbonate, barium sulfate, titanium dioxide and silica, and having an average particle size of approximately 2 μm,
wherein the resin mixture includes a phenol resin and an epoxy acrylate resin with a weight ratio of 10:90 to 90:10,
wherein the solvent is selected from a group consisting of dipropylene glycol methyl ether, butyl carbitol, and terpineol,
wherein the phenol resin and the epoxy acrylate resin with the weight ratio is 40:60 to 80:20,
wherein the phenol resin is one of a novolac or a resole, and
wherein a viscosity of the resin composition is 10,000˜60,000 mPa·s at room temperature.

4. A resin composition to prevent damage to a surface of a substrate from an etchant when an edge thereof is strengthened, the resin composition comprising:
a resin mixture in an amount of 20-50% by weight;
a solvent in an amount of 5-70% by weight; and
a filler of 10˜50% by weight selected from a group consisting of calcium carbonate, barium sulfate, titanium dioxide and silica, and having an average particle size of approximately 2 μm,
wherein the resin mixture includes a phenol resin and an epoxy acrylate resin,
wherein the solvent is selected from a group consisting of dipropylene glycol methyl ether, butyl carbitol, and terpineol, and
wherein the resin mixture includes the phenol resin and the epoxy acrylate resin with a weight ratio of about 90:10.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Nakwon
• Choi Seungkyu
• Hong Seongjae
• Shin Dongwook

Classifications

• C03C2218/355

  Temporary coating · CPC title

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• C03C15/00 Primary

  Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00) · CPC title

• G06F2203/04103

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

• Y10T428/24355

  Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] · CPC title