# US 10,310,671 B2 · Touch sensor device

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- Number: US 10,310,671 B2
- Document ID: US10310671B2
- Status: Granted
- Kind: B2
- Application number: 15/581,717
- Filed: 2017-04-28
- Published: 2018-11-01
- Granted: 2019-06-04
- Earliest claimed: 2017-04-28
- Assignees: Himax Technologies Limited
- Applicants: Himax Technologies Limited
- Inventors: Cheng-Hung Tsai; Xuexia Cai; Yuan-Ting Chen; Jui-Ni Li; Wai-Pan Wu; Shen-Feng Tai
- Web page: https://patentgrep.com/patent/US10310671B2

## CPC

- G06F 3/0418: {for error correction or compensation, e.g. based on parallax, calibration or alignment}
- G06F 3/044: by capacitive means
- G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A touch sensor device provided herein includes a sensor pad disposed on a carrier, wherein the sensor pad includes a first electrode, a second electrode, a third electrode and a grounding electrode. The first electrode surrounds a periphery of the second electrode and a first gap is formed between the first electrode and the second electrode. The first electrode surrounds a periphery of the third electrode, and a second gap is formed between the first electrode and the third electrode. The grounding electrode surrounds a periphery of the pad sensor, wherein a third gap is formed between the first electrode and the grounding electrode.

## Claims

### Claim 1

A touch sensor device comprising a sensor pad disposed on a carrier, wherein the sensor pad comprises:
a first electrode;
a second electrode, wherein the first electrode surrounds a periphery of the second electrode and a first gap is formed between the first electrode and the second electrode;
a third electrode, wherein the first electrode surrounds a periphery of the third electrode, and a second gap is formed between the first electrode and the third electrode;
a grounding electrode, surrounding a periphery of the pad sensor, wherein a third gap is formed between the first electrode and the grounding electrode; and
a shielding film disposed on the carrier and located at a side of the sensor pad, wherein the shielding film reveals the sensor pad,
a backside shielding film disposed on the carrier, wherein the shielding film and the backside shielding film are located at opposite sides of the carrier, and the backside shielding film covers a region corresponding to the sensor pad.

### Claim 2 (depends on 1)

The touch sensor device according to claim 1, wherein the first electrode, the second electrode and the third electrode are coplanar.

### Claim 3 (depends on 1)

The touch sensor device according to claim 1, wherein the first electrode, the second electrode, the third electrode and the grounding electrode are coplanar.

### Claim 4 (depends on 1)

The touch sensor device according to claim 1, wherein the first electrode is located between the second electrode and the third electrode.

### Claim 5 (depends on 1)

The touch sensor device according to claim 1, wherein the first electrode is located between the second electrode and the grounding electrode.

### Claim 6 (depends on 1)

The touch sensor device according to claim 1, wherein the first electrode is located between the third electrode and the grounding electrode.

### Claim 7 (depends on 1)

The touch sensor device according to claim 1, wherein the second electrode is electrically coupled to the first electrode to form a first sensing capacitance and electrically coupled to the third electrode to form a second sensing capacitance.

### Claim 8 (depends on 1)

The touch sensor device according to claim 1, wherein the first electrode and the third electrode are asynchronously enabled to perform a touch sensing scan.

### Claim 9 (depends on 8)

The touch sensor device according to claim 8, wherein one of the first electrode and the third electrode is connected to a ground voltage and the other of the first electrode and the third electrode is enabled to perform the touch sensing scan.

### Claim 10 (depends on 1)

The touch sensor device according to claim 1, wherein a pattern of the first electrode is wounded along with the second electrode and the third electrode.

### Claim 11 (depends on 1)

The touch sensor device according to claim 1, wherein the grounding electrode surrounds a region and the first electrode, the second electrode and the third electrode are located within the region.