TOUCH SENSOR PANEL HAVING A SPLIT-ELECTRODE STRUCTURE AND A TOUCH SENSOR DEVICE PROVIDED WITH THE SAME

• US 20100309167A1
• Filed: 01/29/2009
• Published: 12/09/2010
• Est. Priority Date: 01/29/2008
• Status: Abandoned Application

• Current Assignee: Melfas Incorporated
• Original Assignee: Melfas Incorporated
• Inventors: Nam, Sungsik
• Application Number:
  US12/864,902
• Publication Number:
  US 20100309167A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch sensor panel comprises a plurality of sensing electrodes arranged on one surface of a substrate and a conductive wire connected to one side of each of the plurality of sensing electrodes. Each sensing electrode includes at least one convex portion protruded in the opposite direction of the one side, and at least one concave portion indented towards the one side. For arrangement, the convex portion of each of the said sensing electrodes is inserted into the concave portion of at least one adjacent sensing electrode.

Claims

1. A touch sensing panel comprising:

a plurality of sensing electrodes arranged on a surface of a substrate; and

a conductive wire connected to one sides of the plurality of the sensing electrodes,

wherein each of the sensing electrodes includes;

at least one concave part extended from the one side toward the other side at opposite direction to the one side, and at least one convex part indented toward the one side; and

wherein the concave part in each of the sensing electrodes is disposed to be inserted into the convex part of the opponent sensing electrodes adjacent thereto.

2. The touch sensing panel of claim 1, wherein the surface on which the sensing electrodes are formed is the only surface of the substrate.

3. The touch sensing panel of claim 1, wherein the concave part gradually decreases in width from the one side toward the other side and the convex parts gradually increase in width toward the one side.

4. The touch sensing panel of claim 1, wherein the substrate having the sensing electrodes formed thereon is attached to a display window of an electronic device.

5. The touch sensing panel of claim 1, wherein each sensing electrode is formed of a transparent conductive material.

6. The touch sensing panel of claim 1, wherein two sensing electrodes being adjacent each other form an area in a rectangular shape in such a manner that concave parts and the convex parts thereof are crossed.

7. The touch sensing panel of claim 1, wherein each sensing electrode includes a plurality of the concave parts and the plurality of the concave parts are provided to face in parallel in a same direction.

8. A touch sensing panel having a single-layer electrode comprising:

a plurality of sensing electrodes to form the single-layer electrode;

wherein at least a part of the plurality of the sensing electrodes is formed to have a saw-like shape and each of the plurality of the sensing electrodes is arranged through saw teeth thereof to be engaged with at least one of neighboring sensing electrodes.

9. The touch sensing panel of claim 8, wherein a length of the saw teeth in a concave direction is larger than a width of the saw teeth.

10. The touch sensing panel of claim 8, wherein a width of the saw teeth is not larger than 5 mm.

11. The touch sensing panel of claim 8, wherein two sensing electrodes being adjacent each other form an area in a rectangular shape in such a manner that the saw teeth thereof are engaged.

12. The touch sensing panel of claim 8, wherein a pitch between the two adjacent sensing electrodes arranged to be engaged each other through the saw teeth thereof is not less than 100 μ

m.

13. A touch sensing device comprising:

sensing electrodes arranged on a surface of a substrate to form a sensing area, each sensing electrode being extended along with a first axis; and

a touch sensing unit electrically connected to the sensing electrodes;

wherein each of the sensing electrodes is divided into a plurality of sub-electrodes extending along the first axis in the sensing area, and

wherein at least one sub-electrode in the sensing electrode is disposed between the plurality of sub-electrodes dividing another sensing electrodes.

14. The touch sensing device of claim 13, wherein the touch sensing unit senses a touch using a change of capacitance generated in the sensing electrodes caused by the touch.

15. The touch sensing device of claim 13, wherein the touch sensing unit senses a touch input based on the change of capacitance generated in two or more sub-electrodes in the sensing electrodes different from each other.

16. The touch sensing device of claim 13, wherein the sub-electrodes have a width no more than 5 mm.

17. The touch sensing device of claim 13, wherein a pitch between the sensing electrodes facing each other is not less than 100 μ

m.

18. The touch sensing device of claim 13, wherein some of the plurality of the sub-electrodes is decreased along the first axis-direction in width and the remainder of the plurality of the sub-electrodes is increased in width along the first axis-direction.