CAPACITIVE TOUCH PANEL

• US 20090223723A1
• Filed: 03/10/2008
• Published: 09/10/2009
• Est. Priority Date: 03/10/2008
• Status: Abandoned Application

• Current Assignee: Kai-Ti Yang
• Original Assignee: Kai-Ti Yang
• Inventors: YANG, Kai-Ti
• Application Number:
  US12/045,023
• Publication Number:
  US 20090223723A1
• Time in Patent Office: Days
• US Class Current: 178/18.60
• 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

A capacitive touch panel, comprises a surface layer, an X axis sensing layer, a Y axis sensing layer, an insulation layer, a base substrate and a first signal output wire bank; wherein the surface layer and the bottom layer are high light transmission insulating films; the material of X axis sensing layer and Y axis sensing layer are selected from a transparent film with good conductivity and low impedance; the material of the insulation layer connected the X axis sensing layer and Y axis sensing layer being selected from transparent insulating film material; a plurality of conductive wires are arranged on the first signal output wire bank; and the X axis sensing layer has a plurality of X line traces and the Y axis sensing layer has a plurality of Y line traces.

Claims

1. A capacitive touch panel, comprising:

a surface layer, an X axis sensing layer, a Y axis sensing layer, an insulation layer, a base substrate and a first signal output wire bank;

wherein the surface layer and the bottom layer are high light transmission insulating films;

the material of X axis sensing layer and Y axis sensing layer are selected from a transparent film with good conductivity and low impedance;

the material of the insulation layer connected the X axis sensing layer and Y axis sensing layer being selected from transparent insulating film material;

a plurality of conductive wires are arranged on the first signal output wire bank;

the X axis sensing layer has a plurality of X line traces and the Y axis sensing layer has a plurality of Y line traces, the X directional line traces are vertical to the Y directional line traces;

one end of the X transparent line trace has an X joint and one end of the Y transparent line trace has a Y joint.

2. The capacitive touch panel as claimed in claim 1, wherein all the X joints are connected to an X silver conductor and all the Y joints are connected to a Y silver conductor the signals of the X axis sensing layer and Y axis sensing layer are transferred to the first signal output wire bank and then to a signal processing unit.

3. The capacitive touch panel as claimed in claim 1, wherein the high light transmission insulating films selected from glass, Polycarbonate(PC), Polythylene terephthalate (PET), polymethylmethacrylate (PMMA), and Cyclic Olefin Copolymer.

4. The capacitive touch panel as claimed in claim 1, wherein the material of the insulation layer connected the X axis sensing layer and Y axis sensing layer are selected from transparent insulating film material with a dielectric coefficient between 2 to 4, and oily ink and high transparency polyester films.