INPUT DEVICE AND DISPLAY DEVICE HAVING THE SAME

• US 20100271328A1
• Filed: 04/16/2010
• Published: 10/28/2010
• Est. Priority Date: 04/22/2009
• Status: Abandoned Application

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Nagata, Koji, Hayakawa, Kouji, Mamba, Norio, SEKIGUCHI, Shinji
• Application Number:
  US12/761,505
• Publication Number:
  US 20100271328A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells

Abstract

An electrostatic capacitive coupling-type touch panel is provided which interacts not only with a finger-based input but also with a touch using non-conductive input means. The touch panel includes coordinate detection electrodes for detecting XY position coordinates and transparent Z electrodes. The Z electrodes are arranged over the coordinate detection electrodes at certain intervals with spacers disposed therebetween. An elastic layer that is deformed along the shape of the spacers by compressive force resulting from touch pressing presses the Z electrodes.

Claims

1. An electrostatic capacitive coupling-type touch panel comprising:

a plurality of coordinate detection electrodes for detecting XY position coordinates;

a first substrate having the coordinate detection electrodes; and

a second substrate disposed to face the first substrate,

wherein a conductive layer, a plurality of non-conductive spacers arranged at intervals in a plane direction of the first and second substrates, and an elastic layer that is less rigid than the first substrates, the second substrates and the spacers are provided between the first substrate and the second substrate.

2. The electrostatic capacitive coupling-type touch panel according to claim 1,

wherein the elastic layer is provided between the second substrate and the conductive layer, and

wherein the spacers are provided between the first substrate and the conductive layer.

3. The electrostatic capacitive coupling-type touch panel according to claim 1,

wherein the conductive layer and the elastic layer are included in the same layer which is an elastic conductive layer, and

wherein the spacers are provided between the elastic conductive layer and the first substrate.

4. The electrostatic capacitive coupling-type touch panel according to claim 1,

wherein the elastic layer is provided between the first substrate and the conductive layer, and

wherein the spacers are provided between the second substrate and the conductive layer.

5. The electrostatic capacitive coupling-type touch panel according to claim 2,

wherein a non-conductive layer that is more rigid than the elastic layer is provided between the conductive layer and the elastic layer or between the conductive layer and the spacers.

6. The electrostatic capacitive coupling-type touch panel according to claim 2,

wherein the thickness of the elastic layer is greater than the height of the spacers.

7. The electrostatic capacitive coupling-type touch panel according to claim 2,

wherein an insulating film is provided on the coordinate detection electrodes, and

wherein the spacers are arranged to be able to come into contact with the insulating film.

9. The electrostatic capacitive coupling-type touch panel according to claim 1,

wherein the spacers are beads.

10. The electrostatic capacitive coupling-type touch panel according to claim 1,

wherein the spacers are protrusions which are formed on the first or second substrate.

11. The electrostatic capacitive coupling-type touch panel according to claim 1,

wherein the arrangement pitch of the spacers is 20 μ

m or more and 10000 μ

m or less.

12. A display device with a touch panel comprising:

a display device having a display portion; and

the electrostatic capacitive coupling-type touch panel according to claim 1 provided on the display portion.

13. The electrostatic capacitive coupling-type touch panel according to claim 4,

wherein a non-conductive layer that is more rigid than the elastic layer is provided between the conductive layer and the elastic layer or between the conductive layer and the spacers.

14. The electrostatic capacitive coupling-type touch panel according to claim 3,

wherein an insulating film is provided on the coordinate detection electrodes, and

wherein the spacers are arranged to be able to come into contact with the insulating film.

8. An electrostatic capacitive coupling-type touch panel comprising:

a plurality of coordinate detection electrodes for detecting XY position coordinates;

a first substrate having the coordinate detection electrodes; and

a second substrate disposed to face the first substrate,

wherein a conductive layer is provided between the first substrate and the second substrate, and a plurality of non-conductive spacers arranged at intervals in a plane direction of the first substrates and the second substrates is provided between the conductive layer and the first substrate, and

wherein the spacers are less rigid than the first substrates and the second substrates and the conductive layer.