TOUCH PANEL SENSOR

• US 20120098782A1
• Filed: 02/10/2011
• Published: 04/26/2012
• Est. Priority Date: 10/26/2010
• Status: Abandoned Application

• Current Assignee: Samwon Act Co., Ltd.
• Original Assignee: Samwon Act Co., Ltd.
• Inventors: Nam, Dong Sik
• Application Number:
  US13/025,005
• Publication Number:
  US 20120098782A1
• Time in Patent Office: Days
• US Class Current: 345/174
• 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

In certain embodiments, a touch panel sensor to detect a contact position of part of a body using changing of capacitance includes a lower transparent substrate that has a plurality of lower transparent electrodes aligned in parallel. The touch panel sensor also includes an upper transparent substrate that includes a plurality of upper transparent electrodes aligned in parallel to each other. The upper transparent electrodes cross over the lower transparent electrodes. A plurality of dummy transparent patterns may or may not be formed between the upper transparent electrodes. Further, two or more of the upper transparent electrodes are electrically connected at one or both of upper ends and lower ends to form a group. The portions of the upper transparent electrodes between the upper and lower ends in each group are separated from each other by a uniform width.

Claims

1. A touch panel sensor to detect a contact position of part of a body using changing of capacitance, comprising:

a lower transparent substrate comprising a plurality of lower transparent electrodes aligned in parallel; and

an upper transparent substrate comprising a plurality of upper transparent electrodes aligned in parallel to each other, the upper transparent electrodes crossing over the lower transparent electrodes, and a plurality of dummy transparent patterns formed between the upper transparent electrodes;

wherein two or more of the upper transparent electrodes are electrically connected at one or both of upper ends and lower ends to form a group, wherein the portions of the upper transparent electrodes between the upper and lower ends in each group are separated from each other by a uniform width.

2. The touch panel sensor of claim 1, wherein the dummy transparent patterns are made from a transparent conductive material.

3. The touch panel sensor of claim 1, wherein the dummy transparent patterns have a width and a length each less than a width of each of the upper transparent electrodes, and wherein the dummy transparent patterns are electrically separated from each other.

4. The touch panel sensor of claim 1, wherein the dummy transparent patterns have a width that is less than a width of each of the upper transparent electrodes, and wherein the dummy transparent patterns are electrically separated from each other.

5. The touch panel sensor of claim 1, wherein a width of each of the upper transparent electrodes is less than 100 μ

m.

6. The touch panel sensor of claim 1, wherein the upper transparent electrodes are provided in a shape of one of a straight line, a waved line and a folded line.

7. The touch panel sensor of claim 1, wherein a metal strip is formed on at least one of the upper transparent electrodes and the lower transparent electrodes.

8. The touch panel sensor of claim 7, wherein the metal strip is formed continuously or discontinuously.

9. The touch panel sensor of claim 1, further comprising a transparent shield layer formed on the lower transparent substrate.

10. The touch panel sensor of claim 9, wherein a metal grid is formed on the shield layer.

11. A touch panel sensor to detect a contact position of part of a body using changing of capacitance, comprising:

a lower transparent substrate comprising a plurality of lower transparent electrodes aligned in parallel; and

an upper transparent substrate comprising a plurality of upper transparent electrodes aligned in parallel to each other, the upper transparent electrodes crossing over the lower transparent electrodes;

wherein two or more of the upper transparent electrodes are electrically connected at one or both of upper ends and lower ends to form a group, wherein the portions of the upper transparent electrodes between the upper and lower ends in each group are separated from each other by a uniform width.

12. The touch panel sensor of claim 11, wherein a width of each of the upper transparent electrodes is less than 100 μ

m.

13. The touch panel sensor of claim 11, wherein the upper transparent electrodes are provided in a shape of one of a straight line, a waved line and a folded line.

14. The touch panel sensor of claim 11, wherein a metal line is formed on at least one of the upper transparent electrodes and the lower transparent electrodes.

15. The touch panel sensor of claim 14, wherein the metal line is formed continuously or discontinuously.

16. The touch panel sensor of claim 11, further comprising a transparent shield layer formed beneath the lower transparent substrate.

17. The touch panel sensor of claim 16, wherein a metal grid is formed on the shield layer.

18. A touch panel sensor to detect a contact position of part of a body using changing of capacitance, comprising:

a lower transparent substrate comprising a plurality of lower transparent electrodes aligned in parallel; and

an upper transparent substrate comprising a plurality of upper transparent electrodes aligned in parallel to each other, the upper transparent electrodes crossing over the lower transparent electrodes, and a plurality of dummy transparent patterns formed between the upper transparent electrodes;

wherein two or more of the upper transparent electrodes are electrically connected at one or both of upper ends and lower ends to form a group.