TOUCH SENSING DEVICE

• US 20160342243A1
• Filed: 08/04/2016
• Published: 11/24/2016
• Est. Priority Date: 04/15/2009
• Status: Active Grant

• Current Assignee: HannStar Display Corporation
• Original Assignee: Industrial Technology Research Institute
• Inventors: Kung, Chen-Pang, Chen, Yu-Jen, Lin, Chen-Wei
• Granted Patent: US 9,959,000 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/042 by opto-electronic 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: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T

Abstract

A touch sensing device is provided. The device includes a substrate; a plurality of first electrodes formed on the substrate and arranged along a first direction without overlapping one another; a first insulating layer formed on the substrate and covering the plurality of first electrodes; and a plurality of second electrodes formed on the first insulating layer and arranged along a second direction without overlapping one another, wherein the first direction is orthogonal to the second direction.

Claims

1. A touch sensing device, comprising:

a substrate;

a plurality of first electrodes formed on the substrate and arranged along a first direction without overlapping one another;

a first insulating layer formed on the substrate and covering the plurality of first electrodes;

a plurality of second electrodes forming on the first insulating layer and arranged along a second direction without overlapping one another, wherein each of the plurality of second electrodes has a first surface facing away from the first insulating layer and two second surfaces being opposite to each other and connecting the first surface and the first insulating layer;

a protecting layer formed on the first insulating layer and covering the first surface and the second surfaces of each of the plurality of second electrodes;

a second insulating layer formed on the substrate;

a third electrode layer formed on the second insulating layer; and

one or more layer pairs formed on the third electrode layer, wherein when the one layer pair is formed on the third electrode layer, the layer pair comprises a third insulating layer and another third electrode layer formed on the third electrode layer in sequence, and wherein when the layer pairs are formed on the third electrode layer, the layer pairs are formed on the third electrode layer in sequence, and each of the layer pairs comprises a third insulating layer and another third electrode layer formed in sequence from a side adjacent to the third electrode layer to another side away from the third electrode layer; and

wherein the first direction is orthogonal to the second direction, and the first electrodes and the second electrodes are configured to sense capacitance variation in respond to a conductor indirectly touching the second electrodes.

2. The touch sensing device as claimed in claim 1, wherein the substrate is disposed between the first electrodes and the second insulating layer, between the first electrodes and the third electrode layer, and between the first electrodes and the one or more layer pairs.

3. The touch sensing device as claimed in claim 1, further comprising the conductor, wherein the first electrodes and the second electrodes are used to sense total capacitance variation according to the conductor indirectly touching the second electrodes.

4. The touch sensing device as claimed in claim 1, wherein the second insulating layer, the third electrode layer, and the one or more layer pairs form an isolating layer.

5. The touch sensing device as claimed in claim 4, further comprising an adhesive layer formed on the isolating layer.

6. The touch sensing device as claimed in claim 5, wherein a display device is disposed directly on the adhesive layer of the touch sensing device.

7. The touch sensing device as claimed in claim 1, wherein the protecting layer is a scrape-proof layer, an anti-reflection layer, a water-proof layer, or a gas-proof layer.

8. A touch sensing device, comprising:

a substrate;

a plurality of first electrodes formed on the substrate and arranged along a first direction without overlapping one another;

a first insulating layer formed on the substrate and covering the plurality of first electrodes;

a plurality of second electrodes forming on the first insulating layer and arranged along a second direction without overlapping one another, wherein each of the plurality of second electrodes has a first surface facing away from the first insulating layer and two second surfaces being opposite to each other and connecting the first surface and the first insulating layer;

a protecting layer formed on the first insulating layer and covering the first surface and the second surfaces of each of the plurality of second electrodes, wherein the protecting layer is a scrape-proof layer, an anti-reflection layer, a water-proof layer, or a gas-proof layer; and

an adhesive layer formed on the substrate and bonding a display device to the substrate;

wherein the first direction is orthogonal to the second direction, and the first electrodes and the second electrodes are configured to sense capacitance variation in respond to a conductor indirectly touching the second electrodes.

9. The touch sensing device as claimed in claim 8, wherein the adhesive layer is in direct contact with the display device and the substrate.

10. The touch sensing device as claimed in claim 8, further comprising the conductor, wherein the first electrodes and the second electrodes are used to sense total capacitance variation according to the conductor indirectly touching the second electrodes.

11. The touch sensing device as claimed in claim 8, wherein the display device comprises a substrate device, a display medium layer, and a bottom device, the adhesive layer bonds the substrate device to the substrate, the display medium layer is disposed between the substrate device and the bottom device, and the substrate device is disposed between the display medium layer and the adhesive layer.

12. The touch sensing device as claimed in claim 8, wherein the substrate is disposed between the adhesive layer and the first electrodes.

13. A touch sensing device, comprising:

a substrate;

a plurality of first electrodes formed on the substrate and arranged along a first direction without overlapping one another;

a first insulating layer formed on the substrate and covering the plurality of first electrodes;

a plurality of second electrodes formed on the first insulating layer and arranged along a second direction without overlapping one another, wherein each of the plurality of second electrodes has a first surface facing away from the first insulating layer and two second surfaces being opposite to each other and connecting the first surface and the first insulating layer;

a protecting layer formed on the first insulating layer and covering the first surface and the second surfaces of each of the plurality of second electrodes; and

an isolating layer formed on the substrate and configured to prevent interference from a side of the isolating layer facing away from the substrate, the substrate being between the isolating layer and the first electrodes, the isolating layer comprising;

a second insulating layer formed on the substrate; and

a third electrode layer formed on the second insulating layer,

wherein the first direction is orthogonal to the second direction, and the first electrodes and the second electrodes are configured to sense capacitance variation in respond to a conductor indirectly touching the second electrodes.

14. The touch sensing device as claimed in claim 13, wherein the second insulating layer is disposed between the substrate and the third electrode layer and in direct contact with the substrate and the third electrode layer.

15. The touch sensing device as claimed in claim 13, further comprising the conductor, wherein the first electrodes and the second electrodes are used to sense total capacitance variation according to the conductor indirectly touching the second electrodes.

16. The touch sensing device as claimed in claim 13, further comprising an adhesive layer formed on the isolating layer.

17. The touch sensing device as claimed in claim 16, wherein a display device is disposed directly on the adhesive layer of the touch sensing device, and the isolating layer is configured to prevent interference from the display device.

18. The touch sensing device as claimed in claim 17, wherein the display device comprises a substrate device, a display medium layer, and a bottom device, the adhesive layer bonds the substrate device to the isolating layer, the display medium layer is disposed between the substrate device and the bottom device, and the substrate device is disposed between the display medium layer and the adhesive layer.

19. The touch sensing device as claimed in claim 18, wherein the adhesive layer is in direct contact with the substrate device and the isolating layer.

20. The touch sensing device as claimed in claim 13, wherein the protecting layer is a scrape-proof layer, an anti-reflection layer, a water-proof layer, or a gas-proof layer.