RESISTIVE TOUCH PANEL

• US 20100117984A1
• Filed: 11/02/2009
• Published: 05/13/2010
• Est. Priority Date: 11/10/2008
• Status: Abandoned Application

• Current Assignee: ASUSTek Computer, Inc.
• Original Assignee: ASUSTek Computer, Inc.
• Inventors: LIN, HUNG-YI, Huang, Yung-Lang
• Application Number:
  US12/610,551
• Publication Number:
  US 20100117984A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04808 Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A resistive touch panel includes a first-direction first electrode group and a first-direction second electrode group. The first-direction first electrode group includes multiple electrodes having a first electrode with one unit length, a last electrode with one unit length or two unit length and the other electrodes with two unit length. The first-direction second electrode group includes multiple electrodes having a last electrode with one unit length or two unit length and the other electrodes with two unit length. Wherein, two ends of multiple first-group strip-shaped layers are connected to the first-direction first electrode group and the first-direction second electrode group.

Claims

1. A resistive touch panel comprising:

a first-direction first electrode group including multiple electrodes, wherein a first electrode in the electrodes has one unit length, a last electrode has one unit length or two unit length, and the other electrodes have two unit length; and

a first-direction second electrode group including multiple electrodes, wherein a last electrode in the electrodes has one unit length or two unit length, and the other electrodes have two unit length;

wherein two ends of multiple first-group strip-shaped layers are connected to the first-direction first electrode group and the first-direction second electrode group, respectively.

2. The resistive touch panel according to claim 1, further comprising:

a second-direction first electrode group including multiple electrodes, wherein a first electrode in the electrodes has one unit length, a last electrode has one unit length or two unit length, and the other electrodes have two unit length; and

a second-direction second electrode group including multiple electrodes, wherein a last electrode in the electrodes has one unit length or two unit length, and the other electrodes have two unit length;

wherein two ends of multiple second-group strip-shaped layers are connected to the second-direction first electrode group and the second-direction second electrode group, respectively.

3. The resistive touch panel according to claim 2, wherein the first direction and the second direction are perpendicular to each other.

4. The resistive touch panel according to claim 2, further comprising:

a multiplex switching circuit connected to all the electrodes; and

a control circuit controlling the multiplex switching circuit to selectively connect a first-direction first connecting line group to part or all electrodes in the first-direction first electrode group, connect a first-direction second connecting line group to part or all electrodes in the first-direction second electrode group, connect a second-direction first connecting line group to part or all electrodes in the second-direction first electrode group and connect a second-direction second connecting line group to part or all electrodes in the second-direction second electrode group.

5. The resistive touch panel according to claim 4, wherein during a touch point detecting procedure, the control circuit controls the multiplex switching circuit to connect the first-direction first connecting line group to all electrodes in the first-direction first electrode group, connect the first-direction second connecting line group to all electrodes in the first-direction second electrode group, connect the second-direction first connecting line group to all electrodes in the second-direction first electrode group, connect the second-direction second connecting line group to all electrodes in the second-direction second electrode group and determines a first touch point position.

6. The resistive touch panel according to claim 5, wherein during the touch point verifying procedure, the control circuit determines a first portion touch panel area, and the first touch point position is included in the first portion touch panel area.

7. The resistive touch panel according to claim 6, wherein during the touch point verifying procedure, the control circuit determines the first portion touch panel area, and the control circuit controls the multiplex switching circuit to connect the first-direction first connecting line group to part of the electrodes in the first-direction first electrode group, connect the first-direction second connecting line group to part of the electrodes in the first-direction second electrode group, connect the second-direction first connecting line group to part of the electrodes in the second-direction first electrode group, connect the second-direction second connecting line group to part of the electrodes in the second-direction second electrode group and determines a second touch point position.

8. The resistive touch panel according to claim 7, wherein when the first touch point position and the second touch point position overlap, it is confirmed that a single touch point is generated by a user, and when the first touch point position and the second touch point position do not overlap, it is confirmed that multiple touch points are generated by the user.

9. The resistive touch panel according to claim 2, wherein each of the first-group strip-shaped layer and second-group strip-shaped layer is composed of an indium tin oxide (ITO) layer.