Capacitive Touch Sensor Circuit, Method of Forming Circuit, and Touch Screen and Mobile Device Comprising the Same

• US 20170060322A1
• Filed: 03/03/2014
• Published: 03/02/2017
• Est. Priority Date: 03/03/2014
• Status: Abandoned Application

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: DING, Long
• Application Number:
  US15/120,787
• Publication Number:
  US 20170060322A1
• 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 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04184 Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
• CPC Class Codes: G06F 3/044 by capacitive means
• 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 sensor circuit including a plurality of driving elements arranged as multiple rows in parallel with a horizontal axis of the touch screen, wherein the plurality of driving elements are connected into a plurality of driving lines; and a plurality of sensing elements arranged as multiple columns in parallel with a vertical axis of the touch screen, wherein the plurality of sensing elements are connected into a plurality of sensing lines, each of the plurality of sensing elements being paired with a respective one of the plurality of driving elements. The driving lines and the sensing lines are configured as at least one of: at least two driving elements of one of the plurality of driving lines being positioned at different rows; and at least two sensing elements of one of the plurality of sensing lines being positioned at different columns.

Claims

1. A capacitive touch sensor circuit for a touch screen comprising:

a plurality of driving elements arranged as multiple rows in parallel with a horizontal axis of the touch screen, wherein the plurality of driving elements are connected into a plurality of driving lines; and

a plurality of sensing elements arranged as multiple columns in parallel with a vertical axis of the touch screen, wherein the plurality of sensing elements are connected into a plurality of sensing lines, each of the plurality of sensing elements being paired with a respective one of the plurality of driving elements,

wherein the driving lines and the sensing lines are configured as at least one of;

at least two driving elements of one of the plurality of driving lines being positioned at different rows; and

at least two sensing elements of one of the plurality of sensing lines being positioned at different columns.

2. The capacitive touch sensor circuit of claim 1, wherein at least one of the driving lines is linear.

3. The capacitive touch sensor circuit of claim 1, wherein at least one of the sensing lines is linear.

4. The capacitive touch sensor circuit of claim 1, wherein the driving lines are configured so that, with respect to a touch area, each of driving elements positioned in a row within the touch area belongs to a different driving line.

5. The capacitive touch sensor circuit of claim 1, wherein the sensing lines are configured so that, with respect to a touch area, each of sensing elements positioned in a column within the touch area belongs to a different sensing line.

6. The capacitive touch sensor circuit of claim 1, wherein each of the plurality of driving elements belongs to an exact one driving line, and each of the plurality of sensing elements belongs to an exact one sensing line.

13. A touch screen comprising a capacitive touch sensor circuit according to claim 1.

14. A mobile device comprising a capacitive touch sensor circuit according to claim 1.

7. A method of forming a capacitive touch sensor circuit for a touch screen comprising:

forming a plurality of driving elements as multiple rows in parallel with a horizontal axis of the touch screen;

forming a plurality of sensing elements as multiple columns in parallel with a vertical axis of the touch screen; and

forming a plurality of driving lines and a plurality of sensing lines, wherein the plurality of driving elements are connected into a plurality of driving lines, and wherein the plurality of sensing elements are connected into a plurality of sensing lines,

wherein the driving lines and the sensing lines are configured as at least one of;

at least two driving elements of one of the plurality of driving lines being positioned at different rows; and

at least two sensing elements of one of the plurality of sensing lines being positioned at different columns.

8. The method of claim 7, wherein at least one of the driving lines is linear.

9. The method of claim 7, wherein at least one of the sensing lines is linear.

10. The method of claim 7, further comprising configuring the driving lines so that, with respect to a touch area, each of driving elements positioned in a row within the touch area belongs to a different driving line.

11. The method of claim 7, further comprising configuring the sensing lines so that, with respect to a touch area, each of sensing elements positioned in a column within the touch area belongs to a different sensing line.

12. The method of any of claim 7, wherein each of the plurality of driving elements belongs to an exact one driving line, and each of the plurality of sensing elements belongs to an exact one sensing line.