CAPACITIVE TYPE TOUCH PANEL

• US 20120319991A1
• Filed: 03/21/2012
• Published: 12/20/2012
• Est. Priority Date: 06/14/2011
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Yang, Chung Mo, Hong, Sang Su, Kim, Jae Hun, Lee, In Hyung, Lee, Woo Jin, Lee, Young Woo
• Application Number:
  US13/425,737
• Publication Number:
  US 20120319991A1
• Time in Patent Office: Days
• US Class Current: 345/174
• 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
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

Disclosed herein is a capacitive type touch panel, including: a sensing electrode formed on one surface of a first transparent substrate and having a mesh structure where a plurality of openings with a width of 2X are surrounded by patterned lines; and a driving electrode formed on one surface of a second transparent substrate, which faces the surface of the first substrate, and having a mesh structure where a plurality of openings with a width of 2X are surrounded by patterned lines in a region corresponding to the sensing electrode and a plurality of openings with a width of X are surrounded by patterned lines in the other region.

Claims

1. A capacitive type touch panel, comprising:

a sensing electrode formed on one surface of a first transparent substrate and having a mesh structure where a plurality of openings with a width of 2X are surrounded by patterned lines; and

a driving electrode formed on one surface of a second transparent substrate, which faces the surface of the first substrate, and having a mesh structure where a plurality of openings with a width of 2X are surrounded by patterned lines in a region corresponding to the sensing electrode and a plurality of openings with a width of X are surrounded by patterned lines in the other region.

2. The capacitive type touch panel as set forth in claim 1, wherein the sensing electrode and the driving electrode are disposed crossing each other such that a center of the opening in the mesh structure of the sensing electrode is positioned at a cross point of the patterned lines in the mesh structure of the driving electrode.

3. The capacitive type touch panel as set forth in claim 1, wherein the sensing electrode and the driving electrode are formed of metal.

4. The capacitive type touch panel as set forth in claim 3, wherein the metal is copper (Cu), aluminum (Al), gold (Au), silver (Ag), nickel (Ni), or chrome (Cr).

5. The capacitive type touch panel as set forth in claim 1, wherein the driving electrode and the sensing electrode each have a sheet resistance 150Ω

/□

or lower.

6. The capacitive type touch panel as set forth in claim 1, wherein the touch panel has a transmittance of 88% or higher.

7. A capacitive type touch panel, comprising:

a sensing electrode formed on one surface of a transparent substrate and having a mesh structure where a plurality of openings with a width of 2X are surrounded by patterned lines; and

a driving electrode formed on the other surface of the transparent substrate and having a mesh structure where a plurality of openings with a width of 2X are surrounded by patterned lines in a region corresponding to the sensing electrode and a plurality of openings with a width of X are surrounded by patterned lines in the other region.

8. The capacitive type touch panel as set forth in claim 7, wherein the sensing electrode and the driving electrode are disposed crossing each other such that a center of the opening in the mesh structure of the sensing electrode is positioned at a cross point of the patterned lines in the mesh structure of the driving electrode.

9. The capacitive type touch panel as set forth in claim 7, wherein the sensing electrode and the driving electrode are formed of metal.

10. The capacitive type touch panel as set forth in claim 9, wherein the metal is copper (Cu), aluminum (Al), gold (Au), silver (Ag), nickel (Ni), or chrome (Cr).

11. The capacitive type touch panel as set forth in claim 7, wherein the driving electrode and the sensing electrode each have a sheet resistance 150Ω

/□

or lower.

12. The capacitive type touch panel as set forth in claim 7, wherein the touch panel has a transmittance of 88% or higher.