CONDUCTOR PATTERN STRUCTURE OF CAPACITIVE TOUCH PANEL

• US 20160202807A1
• Filed: 03/21/2016
• Published: 07/14/2016
• Est. Priority Date: 10/24/2014
• Status: Abandoned Application

• Current Assignee: Hycon Technology Corp.
• Original Assignee: Hycon Technology Corp.
• Inventors: WANG, Hui-Min, WANG, Yu-Jen
• Application Number:
  US15/075,902
• Publication Number:
  US 20160202807A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• 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 is a conductor pattern structure of a capacitive touch panel. The structure contains two conductor assemblies with different directions, and each conductor assembly includes a number of conductive cells that are interconnected by conduction lines. Conductor assemblies with different directions are separated by an insulating material. An electrical field and induced capacitors are generated between adjacent conductor assemblies with different directions when giving control signals. Then the touched location is detected. The capacitive induced layer structure also contains a number of floating induced cells, distributed among the adjacent conductive cells. The floating induced cells generate new induced capacitors without connecting to any conduction lines and requiring any control signals. Therefore, the structure has advantages of improving the distribution of the electrical field and enlarging the touch sensing area.

Claims

1. A capacitive touch panel, having a double-layered conductor pattern structure formed on a surface of a substrate, comprising:

a first induced layer, comprising a plurality of first axial conductor assemblies arranged according to a first axial direction, each first axial conductor assembly is composed of a plurality of first axial conductive cells connected by conduction lines;

a second induced layer, comprising a plurality of second axial conductor assemblies arranged according to a second axial direction, each second axial conductor assembly is composed of a plurality of second axial conductive cells connected by conduction lines;

an insulating layer, formed by arranging an insulating material between the first induced layer and the second induced layer; and

a plurality of floating induced cells, each floating induced cell formed between one first induced layer one first axial conductor assemblies, or between second axial conductor assemblies of the second induced layer.

2. The capacitive touch panel according to claim 1, wherein the first axial conductive cell, the second axial conductive cell, and the floating induced cell has a shape of square, hexagonal, elongated, or cruciform, or a combination thereof.

3. The capacitive touch panel according to claim 1, further comprising a plurality of signal transmission lines, formed on the surface of the substrate, each signal transmission lines connecting every first axial conductor assemblies and every second axial conductor assemblies respectively.

4. The capacitive touch panel according to claim 1, wherein a direction of distribution of the first axial conductor assembly is orthogonal to that of the second axial conductor assembly.

5. The capacitive touch panel according to claim 1, wherein every first axial conductive cells, second axial conductive cells, first axial conduction lines and second axial conduction lines are made of a transparent conductive material.

6. The capacitive touch panel according to claim 5, wherein the transparent conductive material is Indium Tin Oxide (ITO).