# US 2019/0377434 A1 · Touch sensor and touch panel having the same

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- Number: US 2019/0377434 A1
- Document ID: US20190377434A1
- Status: Published application
- Kind: A1
- Application number: 16/027,366
- Filed: 2018-07-04
- Published: 2019-12-12
- Earliest claimed: 2018-06-11
- Assignees: Interface Technology (ChengDu) Co., Ltd.; Interface Optoelectronics (Shenzhen) Co., Ltd.; General Interface Solution Limited
- Applicants: Interface Technology (ChengDu) Co., Ltd.; Interface Optoelectronics (ShenZhen) Co., Ltd.; General Interface Solution Limited
- Inventors: Yue-Feng YANG; Po-Lin CHEN; Yen-Heng HUANG
- Web page: https://patentgrep.com/patent/US20190377434A1

## CPC

- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F 1/1641: {the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence)}
- G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)}
- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A touch panel includes a light-transmissive cover, a display module, and a touch sensing layer. The display module is disposed on the light-transmissive cover. The touch sensing layer is disposed between the light-transmissive cover and the display module, and has a first side and a second side opposite to the first side. The first side has a first folding region, and the second side has a second folding region. When the first side and the second side of the touch sensing layer are unfolded, the first folding region and the second folding region extend outward from two opposite edges of the light-transmissive cover. When the first side and the second side of the touch sensing layer are folded, the first folding region and the second folding region are located on the display module.

## Claims

### Claim 1

A touch panel, comprising:
a light-transmissive cover;
a display module disposed on the light-transmissive cover; and
a touch sensing layer disposed between the light-transmissive cover and the display module, wherein the touch sensing layer has a first side and a second side opposite to the first side, the first side has a first folding region, and the second side has a second folding region, wherein when the first side and the second side of the touch sensing layer are unfolded, the first folding region and the second folding region extend outward from two opposite edges of the light-transmissive cover; and when the first side and the second side of the touch sensing layer are folded, the first folding region and the second folding region are located on the display module, and wherein when the first folding region and the second folding region are folded, the light-transmissive cover, the touch sensing layer, and the display module collectively form a first projection area, and when the first side and the second side are unfolded, the light-transmissive cover and the touch sensing layer collectively form a second projection area that is larger than the first projection area.

### Claim 2 (depends on 1)

The touch panel of claim 1, wherein when the first side and the second side of the touch sensing layer are folded, each of the first folding region and the second folding region is overlapped with a portion of the light-transmissive cover and a portion of the display module.

### Claim 3 (depends on 1)

The touch panel of claim 1, wherein the touch sensing layer has an active region and a periphery region that surrounds the active region, and the first folding region and the second folding region are located in the periphery region.

### Claim 4 (depends on 1)

The touch panel of claim 1, further comprising:
an optically clear adhesive disposed between the touch sensing layer and the light-transmissive cover.

### Claim 5 (depends on 4)

The touch panel of claim 4, wherein the optically clear adhesive further extends to the first folding region or the second folding region of the touch sensing layer.

### Claim 6 (depends on 1)

The touch panel of claim 1, further comprising:
an optically clear adhesive disposed between the display module and the touch sensing layer.

### Claim 7 (depends on 1)

The touch panel of claim 1, wherein when the first side and the second side of the touch sensing layer are unfolded, a ratio of a length of the touch sensing layer to a length of the light-transmissive cover is greater than 1 and smaller than 2.

### Claim 8

(canceled)

### Claim 9 (depends on 1)

The touch panel of claim 1, wherein the touch sensing layer further comprises at least one conductive trace and a bonding pad, and the conductive trace is electrically connected to the display module and the bonding pad.

### Claim 10 (depends on 9)

The touch panel of claim 9, wherein the touch panel has a third side adjacent to the first side and the second side, and the bonding pad is disposed on the third side of the touch panel.