Touch sensor

• US 9,383,879 B2
• Filed: 08/11/2014
• Issued: 07/05/2016
• Est. Priority Date: 10/01/2013
• Status: Expired due to Fees

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Jung, Hyun Chul, Park, Sang Hoon, Son, Jang Bae, Kim, Tae Hoon
• Primary Examiner(s): Assouad, Patrick
• Assistant Examiner(s): CURTIS, SEAN M
• Application Number:
  US14/457,101
• Publication Number:
  US 20150091590A1
• Time in Patent Office: 694 Days
• Field of Search: 324/685
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Abstract

Disclosed herein is a touch sensor using a metal electrode. More specifically, the present invention relates to a touch sensor capable of implementing reliability of the metal electrode and having economical efficiency even under a condition of high temperature and humidity by forming a first protection layer including a heterocycle compound on metal fine lines forming the electrode pattern.

Claims

1. A touch sensor, comprising:

a base substrate;

an electrode pattern formed on one surface of the base substrate and formed by intersecting metal fine lines with each other;

a first protection layer formed on the electrode pattern; and

an adhesive layer formed on the electrode pattern having the first protection layer formed thereon;

wherein the first protection layer includes a heterocycle compound, and

wherein a second protection layer is formed on side surfaces including the base substrate and the adhesive layer.

2. The touch sensor as set forth in claim 1, wherein the heterocycle compound is at least one selected from a group consisting of imidazole, azole, thiol, and amine based.

3. The touch sensor as set forth in claim 2, wherein the heterocycle compound is a benzimidazole derivative represented by the following Chemical Formula 1 or a benzotriazole derivative represented by the following Chemical Formula 2,

4. The touch sensor as set forth in claim 1, wherein the electrode pattern includes a first electrode pattern formed on one surface of the base substrate and a second electrode pattern formed on the other surface of the base substrate.

5. The touch sensor as set forth in claim 1, wherein the electrode pattern having the first protection layer formed thereon has a third protection layer formed on an entire surface thereof.

6. The touch sensor as set forth in claim 5, wherein the first protection layer is at least one selected from a group consisting of imidazole, azole, thiol, and amine based.

7. The touch sensor as set forth in claim 6, wherein the heterocycle compound is a benzimidazole derivative represented by the following Chemical Formula 1 or a benzotriazole derivative represented by the following Chemical Formula 2,

8. The touch sensor as set forth in claim 5, wherein the third protection layer is at least one selected from a group consisting of acryl, epoxy, urethane, poly methyl methacrylate, polycarbonate, and poly vinyl acetate.

9. The touch sensor as set forth in claim 1, wherein the second protection layer is at least one selected from a group consisting of liquefied acryl, epoxy, and urethane based.