METHOD OF MANUFACTURING TOUCH SCREEN

• US 20120048465A1
• Filed: 11/08/2010
• Published: 03/01/2012
• Est. Priority Date: 08/30/2010
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Kim, Sang Hwa, Lee, Jong Young
• Application Number:
  US12/941,238
• Publication Number:
  US 20120048465A1
• Time in Patent Office: Days
• US Class Current: 156/290
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

Disclosed herein is a method of manufacturing a touch screen, including; preparing two sheets of transparent substrate on which transparent electrodes are formed; preparing a substrate on which a release film is formed; printing dot spacers on the release film and curing the dot spacers; transferring the dot spacers to the transparent electrode by stacking the substrate on the transparent substrate so that the dot spacers are in contact with the transparent electrode; and bonding the outer sides of the two sheets of transparent substrates by an adhesive layer so that the transparent electrodes formed on the two sheets of transparent substrates face each other. The dot spacers are previously cured on the release film and then transferred to the transparent electrode, thereby making it possible to prevent the transparent electrode from being damaged due to a curing process of the dot spacers.

Claims

1. A method of manufacturing a touch screen, comprising:

preparing two sheets of transparent substrates on which transparent electrodes are formed;

preparing a substrate on which a release film is formed;

printing dot spacers on the release film and curing the dot spacers;

transferring the dot spacers to the transparent electrode by stacking the substrate on the transparent substrate so that the dot spacers are in contact with the transparent electrode; and

bonding the outer sides of the two sheets of transparent substrates by an adhesive layer so that the transparent electrodes formed on the two sheets of transparent substrates face each other

2. The method of manufacturing a touch screen as set forth in claim 1, wherein the release film is a film made of a silicon-based material or a Mylar film.

3. The method of manufacturing a touch screen as set forth in claim 1, wherein the transparent electrode includes a conductive polymer.

4. The method of manufacturing a touch screen as set forth in claim 1, wherein the transferring the dot spacers to the transparent electrode compresses and transfers the dot spacers to the transparent electrode.

5. The method of manufacturing a touch screen as set forth in claim 1, wherein the transferring the dot spacers to the transparent electrode applies heat of 80°

C. or less.

6. The method of manufacturing a touch screen as set forth in claim 1, wherein at the bonding the two sheets of transparent substrates, the adhesive layer is a double adhesive tape (DAT).

7. The method of manufacturing a touch screen as set forth in claim 1, wherein the transparent electrodes formed on the two sheets of transparent substrates are in contact with each other when a touched input is generated to sense a change in resistance or voltage.

8. The method of manufacturing a touch screen as set forth in claim 1, wherein the substrate includes polyethyleneterephthalate (PET).

9. The method of manufacturing a touch screen as set forth in claim 1, wherein the transferring the dot spacers to the transparent electrode transfers the dot spacers to any one of the transparent electrodes formed on the two sheets of transparent substrates.