TOUCH PANEL SENSOR

• US 20120056664A1
• Filed: 03/03/2010
• Published: 03/08/2012
• Est. Priority Date: 03/04/2009
• Status: Active Grant

• Current Assignee: Dong Sik Nam
• Original Assignee: Dong Sik Nam
• Inventors: Nam, Dong Sik
• Granted Patent: US 8,550,991 B2
• Time in Patent Office: Days
• US Class Current: 327/517
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• 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
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 2217/94094 Wired transmission, e.g. via bus connection or similar
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

A touch panel sensor for sensing a contact position of part of body comprises a substrate, a resist electrode part including resist electrodes formed on the substrate to have a capacitance changeable according to approaching of the part of body, and a signal electrode part including signal electrodes formed on the resist electrode having resistance coefficient less than the resist electrode.

Claims

1. A touch panel sensor for sensing a contact position of part of body comprising:

a substrate;

a resist electrode part including resist electrodes formed on the substrate to have a capacitance changeable according to approaching of the part of body; and

a signal electrode part including signal electrodes formed on the resist electrode having resistance coefficient less than the resist electrode.

2. The touch panel sensor of claim 1, wherein the signal electrodes are made of metal.

3. The touch panel sensor of claim 1, wherein the resist electrodes are made of transparent conductive material.

4. The touch panel sensor of claim 1, wherein the signal electrodes have a width less than the resist electrodes.

5. The touch panel sensor of claim 1, wherein the resist electrode part comprises first electrode patterns provided parallel on one surface of the substrate, and second electrode patterns provided perpendicular to the first electrode patterns on the same surface of the substrate, to be electrically separated from the first electrodes, The second electrode patterns having transparent connections formed separated from the first electrode patterns,

the signal electrode part comprises a low-resist line formed on the transparent connections arranged in series, such that the low-resist line decreases the resistance of the second electrode patterns.

6. The touch panel sensor of claim 5, wherein an insulating layer or insulating patterns are formed between the first electrode patterns and the signal electrode part to electrically separate the first electrode patterns and the signal electrode part.

7. The touch panel sensor of claim 5, wherein the first electrode patterns include enlarged portions arranged in one row and bridge portions connecting the enlarged portions between the enlarged portions.

8. The touch panel sensor of claim 7, wherein the bridge portions are overlaid over or under the low-resist line.

9. The touch panel sensor of claim 1, wherein the signal electrode part is formed in a shape of a straight line, a regularly or irregularly curved line, or a regularly or irregularly folded line.

10. The touch panel sensor of claim 1, wherein the signal electrode part is provided on the resist electrode part, to have discontinuously interrupted electrode lines.

11. The touch panel sensor of claim 10, wherein the signal electrode part is formed irregularly.

12. The touch panel sensor of claim 1, wherein an optical absorption is formed on a top surface of the signal electrode part.

13. The touch panel sensor of claim 1, wherein two or more of the signal electrodes are electrically connected to form a group.

14. The touch panel sensor of claim 1, wherein the resist electrodes are arranged in one row on the substrate,

each of the resist electrodes has a first nod pattern and a second nod pattern mutually adjacent but electrically separated,

the resistance ratio between the first nod pattern and the second nod pattern in one of the resist electrodes is different from that in neighboring another resist electrode.

15. The touch panel sensor of claim 14, wherein the first nod pattern in one of the resist electrodes is electrically connected to another first nod pattern in neighboring another resist electrode, the area or the thickness of the first nod patterns increasing in order, and

the second nod pattern in the one of the resist electrodes is electrically connected to another second nod pattern in the neighboring another resist electrode, the area or the thickness of the second nod patterns decreasing in order.

16. The touch panel sensor of claim 1, wherein the resist electrodes are provided parallel on the substrate, each of the resist electrodes having a gradually changing width.

17. A method of manufacturing a touch panel sensor for sensing a contact position of part of body comprising:

providing a resist electrode part including resist electrodes formed on a substrate to have a capacitance changeable according to approaching of the part of body; and

providing a signal electrode part including signal electrodes formed above the resist electrode having resistance coefficient less than the resist electrodes.

18. The method of claim 17, wherein the signal electrode part is provided using metal.

19. The method of claim 17, wherein the resist electrode part is provided using transparent conductive material.