# US 2014/0152608 A1 · Touch panel

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- Number: US 2014/0152608 A1
- Document ID: US20140152608A1
- Status: Published application
- Kind: A1
- Application number: 13/725,293
- Filed: 2012-12-21
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: HengHao Technology Co. LTD
- Applicants: Henghao Technology Co. Ltd
- Inventors: YEN-CHUN PENG
- Web page: https://patentgrep.com/patent/US20140152608A1

## CPC

- G01D 5/2405: {by varying dielectric}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A touch panel includes a first sensing electrode layer formed on a first surface of a transparent substrate, the first sensing electrode layer having plural first electrodes. Plural first dummy electrodes are disposed among the first electrodes of the first sensing electrode layer respectively, and are electrically insulated from the first electrodes. A second sensing electrode layer is formed on a second surface being opposite to the first surface. The second sensing electrode layer includes plural second electrodes, which are disposed complementally in relation to the first electrodes.

## Claims

### Claim 1

A touch panel, comprising:
a transparent substrate;
a first sensing electrode layer formed on a first surface of the transparent substrate, the first sensing electrode layer having a plurality of first electrodes;
a plurality of first dummy electrodes disposed among the first electrodes of the first sensing electrode layer respectively, and electrically insulated from the first electrodes; and
a second sensing electrode layer formed on a second surface of the transparent substrate, the second surface being opposite to the first surface, the second sensing electrode layer including a plurality of second electrodes that are disposed complementally in relation to the first electrodes.

### Claim 2 (depends on 1)

The touch panel of claim 1, wherein the first electrodes comprise a light-transmissive structure made of a non-transparent material.

### Claim 3 (depends on 2)

The touch panel of claim 2, wherein the first electrodes comprise a plurality of metal nanowires or metal nanonets.

### Claim 4 (depends on 3)

The touch panel of claim 3, wherein the first electrodes further comprise plastic material for fixing the metal nanowires or the metal nanonets in the first sensing electrode layer.

### Claim 5 (depends on 3)

The touch panel of claim 3, wherein the first electrodes further comprise photosensitive material.

### Claim 6 (depends on 1)

The touch panel of claim 1, wherein a distance between the first dummy electrode and a neighboring first electrode is less than or equal to 40 nanometers.

### Claim 7 (depends on 1)

The touch panel of claim 1, wherein the first dummy electrode comprises a plurality of strips.

### Claim 8 (depends on 7)

The touch panel of claim 7, wherein the strip has a width of less than or equal to 90 nanometers.

### Claim 9 (depends on 7)

The touch panel of claim 7, wherein a distance between neighboring strips is less than or equal to 40 nanometers.

### Claim 10 (depends on 1)

The touch panel of claim 1, further comprising a plurality of second dummy electrodes disposed among the second electrodes of the second sensing electrode layer respectively, and electrically insulated from the second electrodes.

### Claim 11 (depends on 1)

The touch panel of claim 1, wherein the transparent substrate has a thickness greater than 50 nanometers.

### Claim 12 (depends on 1)

The touch panel of claim 1, wherein the transparent substrate comprises glass, photosensitive material or polyethylene terephthalate (PET).

### Claim 13 (depends on 1)

The touch panel of claim 1, wherein the second electrodes comprise transparent conductive material.