CAPACITIVE COUPLING TYPE TOUCH PANEL

• US 20100108409A1
• Filed: 11/04/2009
• Published: 05/06/2010
• Est. Priority Date: 11/06/2008
• Status: Abandoned Application

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Hamamoto, Tatsuo, Tanaka, Jun, Mamba, Norio, Sekiguchi, Shinji
• Application Number:
  US12/612,049
• Publication Number:
  US 20100108409A1
• Time in Patent Office: Days
• US Class Current: 178/18.60
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• 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 3/0447 Position sensing using the local deformation of sensor cells

Abstract

A capacitive coupling type touch panel includes an XY-coordinate electrode configured to detect an XY-position coordinate. The XY-coordinate electrode is provided on a transparent substrate and detects a position inputted by capacitive coupling. The capacitive coupling type touch panel also includes an electrode provided at a position so as to be isolated from and opposed to the XY-coordinate electrode.

Claims

1. A capacitive coupling type touch panel comprising:

an XY-coordinate electrode configured to detect an XY-position coordinate, wherein the XY-coordinate electrode is provided on a transparent substrate and detects a position inputted by capacitive coupling; and

an electrode provided at a position so as to be isolated from and opposed to the XY-coordinate electrode.

2. The capacitive coupling type touch panel according to claim 1, wherein the electrode comprises at least a floating electrode that is provided so as to be insulated.

3. The capacitive coupling type touch panel according to claim 2 further comprising a first transparent substrate having the XY-coordinate,

wherein at least the floating electrode comprises a plurality of floating electrodes that are provided in a line in a direction along a surface of the first transparent substrate.

4. The capacitive coupling type touch panel according to claim 2 further comprising a second transparent substrate opposed to the first transparent substrate, wherein the floating electrode comprises a transparent electrode, and

wherein the floating electrode is provided on the second transparent substrate.

5. The capacitive coupling type touch panel according to claim 2, wherein the XY-coordinate electrode and the floating electrode are provided so that a distance therebetween is variable.

6. The capacitive coupling type touch panel according to claim 5 further comprising an insulating film between the XY-coordinate electrode and the floating electrode,

wherein the insulating film is deformed elastically so as to vary the distance.

7. The capacitive coupling type touch panel according to claim 6, wherein a light transmittance of the insulating film is 80% or more in a visible light region.

8. The capacitive coupling type touch panel according to claim 4 further comprising a liquid layer between the XY-coordinate electrode and the floating electrode.

9. The capacitive coupling type touch panel according to claim 4 further comprising a gas layer that is sealed between the XY-coordinate electrode and the floating electrode.

10. The capacitive coupling type touch panel according to claim 3 further comprising:

a third substrate that is opposed to the first transparent substrate; and

a light emitting layer having an organic electroluminescence layer that emits light in a direction of the first transparent substrate and is provided on the third substrate,

wherein the floating electrode is provided on the organic electroluminescence layer.

11. The capacitive coupling type touch panel according to claim 10 further comprising a gas layer that is sealed between the first transparent substrate and the third substrate,

wherein the gas layer is interposed between the XY-coordinate electrode and the floating electrode.

12. The capacitive coupling type touch panel according to claim 1, wherein the capacitive coupling type touch panel receives an input based on a variation of capacitive coupling that occurs between the XY-coordinate electrode and the electrode.

13. The capacitive coupling type touch panel according to claim 3,

wherein when one of the first transparent substrate and the second transparent substrate is touched with an insulator, a distance between the XY-coordinate electrode and the floating electrode is varied so that the capacitive coupling that occurs between the XY-coordinate electrode and the floating electrode varies, and

wherein the capacitive coupling type touch panel detects a position where the insulator is touched by detecting a variation of the capacitive coupling.