CAPACITIVE TOUCH PANEL

• US 20100051355A1
• Filed: 08/31/2008
• Published: 03/04/2010
• Est. Priority Date: 08/31/2008
• Status: Abandoned Application

• Current Assignee: Young Fast Optoelectronics Company Limited
• Original Assignee: Young Fast Optoelectronics Company Limited
• Inventors: Yang, Kai-Ti
• Application Number:
  US12/202,316
• Publication Number:
  US 20100051355A1
• Time in Patent Office: Days
• US Class Current: 178/18.60
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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

An improved structure of capacitive touch panel mainly improves the arrangement of induction-spots on ends of X and Y axis traces so that the capacitive sensing area on edges of the working area of a touch panel are arranged equally. Thus, the sensing signals on edges of the working area of the touch panel can be detected so as to maximize the actual effecting area of the touch panel.

Claims

1. A capacitive touch panel comprising a sensing layer for capacitive signal, wherein the sensing layer has a plurality of X and Y traces intersected with each other as a matrix and insulated from each other;

induction-spots are connected one by one along each X axis trace, and induction-spots are connected one by one along each Y axis trace;

an end of each X and Y axis trace is connected to a silver conducting wire and further conducted to a signal output wire bank;

on the edges of the sensing layer, a section width Wx of the induction-spots on the ends of the X axis traces cut by Y axis edges and a section width Wy of the adjacent induction-spots of the Y axis traces cut by the Y axis edges have a ratio of Wx;

Wy around 6;

1 to 1;

6;

a section width Hy of the induction-spots on the ends of the Y axis traces cut by the X axis edges and a section width Hx of the adjacent induction-spots of the X axis traces cut by the X axis edges have a ratio of Hy;

Hx around 6;

1 to 1;

6.

2. A capacitive touch panel as claimed in claim 1, wherein the induction-spots on the ends of the X axis traces which cut by the Y axis edges are formed roughly as triangles, and the adjacent induction-spots of the Y axis traces which cut by the Y axis edges are formed roughly as pentagons;

while the induction-spots on the ends of the Y axis traces which cut by the X axis edges are formed roughly as triangles, and the adjacent induction-spots of the X axis traces which cut by the X axis edges are formed roughly as pentagons.

3. A capacitive touch panel as claimed in claim 1, wherein the induction-spots on the ends of the X axis traces which cut by the Y axis edges are formed roughly as pentagons, and the adjacent induction-spots of the Y axis traces which cut by the Y axis edges are formed roughly as triangles;

while the induction-spots on the ends of the Y axis traces which cut by the X axis edges are formed roughly as pentagons, and the adjacent induction-spots of the X axis traces which cut by the X axis edges are formed roughly as triangles.

4. A capacitive touch panel as claimed in claim 1, wherein the induction-spots on the ends of the X axis traces cut by the Y axis edges are formed roughly as pentagons, and the adjacent induction-spots of the Y axis traces cut by the Y axis edges are formed with an extra area which protrudes outwards to the Y axis edges;

while the induction-spots on the ends of the Y axis traces cut by the X axis edges are formed roughly as pentagons, and the adjacent induction-spots of the X axis traces cut by the X axis edges are formed with an extra area which protrudes outwards to the X axis edges.

5. A capacitive touch panel as claimed in claim 1, wherein the induction-spots on the ends of the X axis traces cut by the Y axis edges are formed with an extra area which protrudes outwards to the Y axis edges, and the adjacent induction-spots of the Y axis traces cut by the Y axis edges are formed roughly as pentagons;

while the induction-spots on the ends of the Y axis traces cut by the X axis edges are formed with an extra area which protrudes outwards to the X axis edges, and the adjacent induction-spots of the X axis traces cut by the X axis edges are formed roughly as pentagons.