TOUCH PANEL

• US 20110254783A1
• Filed: 03/22/2011
• Published: 10/20/2011
• Est. Priority Date: 04/19/2010
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Yu, Jian-Shen, WANG, Yi-Long, Chiang, Min-Feng, Hsieh, Ming-Lun
• Granted Patent: US 8,836,651 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184

Abstract

A touch panel includes a plurality of driving lines, a plurality of sensing lines and a plurality of sensing units. The sensing lines are arranged intersecting with the driving lines. The sensing units are arranged in an array, and each of the sensing units is electrically coupled to a corresponding one of the driving lines and a corresponding one of the sensing lines. The driving lines or the sensing lines only pass through a single side of the touch panel.

Claims

1. A touch panel, wherein the touch panel has a first region, a second region, a third region and a fourth region, the first region and the second region being arranged along a first direction, the third region and the fourth region being arranged along the first direction, the first region and the third region being arranged along a second direction, the second region and the fourth region being arranged along the second region, the first direction being substantially perpendicular to the second direction, and each of the first through fourth regions comprising:

a plurality of driving lines;

a plurality of sensing lines arranged intersecting with the driving lines; and

a plurality of sensing units arranged in an array, and each of the sensing units being electrically coupled to a corresponding one of the driving lines and a corresponding one of the sensing lines;

wherein the driving lines or the sensing lines of the first through fourth regions only pass through a single side of the touch panel; and

at least one of the following condition exists;

the sensing units of the first region or the third region in a same row along the first direction are electrically coupled to one of the driving lines while the sensing units of the second region or the fourth region in the same row along the first direction are electrically coupled to another one of the driving lines when the driving lines of the first through fourth regions only pass through the single side of the touch panel; and

the sensing units of the first region or the second region in a same column along the second direction are electrically coupled to one of the sensing lines while the sensing units of the third region or the fourth region in the same column along the second direction are electrically coupled to another one of the sensing lines when the sensing lines of the first through fourth regions only pass through the single side of the touch panel.

2. The touch panel as claimed in claim 1, wherein the sensing lines of each of the first through fourth regions pass through the single side of the touch panel, and the driving lines of the first region and the driving lines of the second region respectively pass through two opposite sides of the touch panel, and the driving lines of the third region and the driving lines of the fourth region respectively pass through the two opposite sides of the touch panel.

3. The touch panel as claimed in claim 2, wherein the sensing lines of the third region pass through the first region, and the sensing lines of the fourth region pass through the second region.

4. The touch panel as claimed in claim 1, wherein the driving lines of each of the first through fourth regions pass through the single side of the touch panel, the sensing lines of the first region and the sensing lines of the third region respectively pass through two opposite sides of the touch panel, and the sensing lines of the second region and the sensing lines of the fourth region respectively pass through the two opposite sides of the touch panel.

5. The touch panel as claimed in claim 4, wherein the driving lines of the first region pass through the second region, and the driving lines of the third region pass through the fourth region.

6. The touch panel as claimed in claim 1, wherein the touch panel is integrated with another touch panel same as claimed in claim 1 to constitute a larger touch panel.

7. The touch panel as claimed in claim 1, wherein the touch panel is disposed on a color filer (CF) substrate of a liquid crystal display.

8. The touch panel as claimed in claim 7, wherein the touch panel is disposed between a protection layer and a color filer of the color filter substrate.

9. A touch panel, comprising:

a plurality of driving lines;

a plurality of sensing lines arranged intersecting with the driving lines; and

a plurality of sensing units disposed in an array, and each of the sensing units being electrically coupled to a corresponding one of the driving lines and a corresponding one of the sensing lines;

wherein the driving lines or the sensing lines only pass through a single side of the touch panel;

some of the sensing units in a same row in the array are electrically coupled to one of the driving lines while the others of the sensing units in the same row are electrically coupled to another one of the driving lines when the driving lines only pass through the single side of the touch panel; and

some of the sensing units in a same column in the array are electrically coupled to one of the sensing lines while the others of the sensing units in the same column are electrically coupled to another one of the sensing lines when the sensing lines only pass through the single side of the touch panel.

10. The touch panel as claimed in claim 9, wherein the sensing lines pass through the single side of the touch panel, and the driving lines pass through two opposite sides of the touch panel.

11. The touch panel as claimed in claim 9, wherein the driving lines pass through the single side of the touch panel, and the sensing lines pass through two opposite sides of the touch panel.

12. A touch detecting method, adapted to a touch panel formed with a plurality of sensing units arranged in an array, the touch detecting method comprising:

delivering a first driving signal to some of the sensing units along a first direction;

delivering a second driving signal to the others of the sensing units along a second direction, the second direction being opposite with respect to the first direction; and

obtaining sensing signals from the respective sensing units and delivered in the touch panel along at least a direction different from the first and second directions.

13. The touch detecting method as claimed in claim 12, wherein the sensing signals are delivered in the touch panel along a single direction different from the first and second directions.

14. The touch detecting method as claimed in claim 12, wherein the sensing signals are delivered in the touch panel along two opposite sides different from the first and second directions.