Touch device

• US 9,921,695 B2
• Filed: 07/20/2015
• Issued: 03/20/2018
• Est. Priority Date: 03/12/2015
• Status: Active Grant

• Current Assignee: HannStar Display Corporation
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chen, Sin-An, Chang, Chih-Chia
• Primary Examiner(s): LANDIS, LISA S
• Application Number:
  US14/803,875
• Publication Number:
  US 20160266670A1
• Time in Patent Office: 974 Days
• 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 3/0448 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 device is provided. The touch device includes a first insulating layer, a first sensing electrode layer, a second insulating layer, and a second sensing electrode layer. The first sensing electrode layer is located on the first insulating layer. The second insulating layer is located on the first sensing electrode layer. The second sensing electrode layer is located on the second insulating layer.

Claims

1. A touch device, comprising:

a first insulating layer, wherein the first insulating layer has a thickness of 0.01-75 micrometers (μ

m);

a first sensing electrode layer disposed on the first insulating layer, wherein the first sensing electrode layer is a transmitter electrode;

a second insulating layer disposed on the first sensing electrode layer; and

a second sensing electrode layer disposed on the second insulating layer, wherein the second sensing electrode layer is a receiver electrode, a thickness of the first sensing electrode layer is 20-200 nanometers (nm), and a thickness of the second sensing electrode layer is 20-200 nm.

2. The touch device according to claim 1, further comprising:

an electrode layer, wherein the first insulating layer is disposed between the electrode layer and the first sensing electrode layer.

3. The touch device according to claim 2, wherein the electrode layer is a pixel electrode layer, a reference electrode, or an upper electrode layer of an organic light emitting diode (OLED) display module.

4. The touch device according to claim 1, wherein the second sensing electrode layer has a first region and a second region, the first region overlaps the first sensing electrode layer, and the second region does not overlap the first sensing electrode layer.

5. The touch device according to claim 4, wherein a ratio of an area of the first region of the second sensing electrode layer with respect to a total area of the first region and the second region of the second sensing electrode layer is 90-99.5%.

6. The touch device according to claim 1, further comprising:

a patterned conducting layer disposed on the first insulating layer and coplanar with the first sensing electrode layer, wherein the patterned conducting layer is electrically insulated from the first sensing electrode layer and the second sensing electrode layer.

7. The touch device according to claim 6, wherein the patterned conducting layer and the first sensing electrode layer are separated by a spacing of 100 nm-200 μ

m.

8. The touch device according to claim 6, wherein a pattern of the patterned conducting layer is complementary to a pattern of the first sensing electrode layer and covers 80% or more than 80% of an area of the first insulating layer.

9. The touch device according to claim 6, wherein the second sensing electrode layer has a first region and a second region, the first region overlaps the first sensing electrode layer, the second region does not overlap the first sensing electrode layer, and the second region overlaps the patterned conducting layer.

10. The touch device according to claim 9, wherein a width of the first region of the second sensing electrode layer is smaller than a width of the second region of the second sensing electrode layer.

11. The touch device according to claim 1, wherein the first insulating layer comprises:

an insulating protection layer; and

an adhering layer disposed on the insulating protection layer.