# US 2018/0321561 A1 · Touch display device

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- Number: US 2018/0321561 A1
- Document ID: US20180321561A1
- Status: Published application
- Kind: A1
- Application number: 15/619,091
- Filed: 2017-06-09
- Published: 2018-11-08
- Earliest claimed: 2017-05-05
- Assignees: Chunghwa Picture Tubes, Ltd.
- Applicants: Chunghwa Picture Tubes, LTD.
- Inventors: Jiun-Jr Huang
- Web page: https://patentgrep.com/patent/US20180321561A1

## CPC

- G02F 1/136204: {Arrangements to prevent high voltage or static electricity failures}
- G02F 1/13338: {Input devices, e.g. touch panels}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G02F 1/134372: {for fringe field switching [FFS] where the common electrode is not patterned}
- G06F 3/044: by capacitive means
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A touch display device including a lower substrate, an active device array disposed on the lower substrate, a passivation layer covering the active device array, touch electrodes disposed on the passivation layer, an upper substrate, a display medium disposed between the upper substrate and the touch electrodes, an upper polarizing plate and a signal transmission line is provided. Δε of the display medium is smaller than 0. The upper polarizing plate is disposed at one side of the upper substrate located away from the display medium, and has an adhesion layer to adhere the upper polarizing plate and the upper substrate, where a sheet resistance of the adhesion layer is smaller than or equal to 109Ω/□. The signal transmission line is disposed in a non-display area, and has a first end and a second end respectively connected to the adhesion layer and the lower substrate.

## Claims

### Claim 1

A touch display device, comprising:
a lower substrate;
an active device array, disposed on the lower substrate;
a passivation layer, covering the active device array;
a plurality of touch electrodes, disposed on the passivation layer;
an upper substrate, disposed opposite to the lower substrate;
a display medium, disposed between the upper substrate and the plurality of touch electrodes, and Δε of the display medium is smaller than 0;
an upper polarizing plate, disposed at one side of the upper substrate located away from the display medium, and having an adhesion layer to adhere the upper polarizing plate and the upper substrate, wherein a sheet resistance of the adhesion layer is smaller than or equal to 109Ω/□; and
a signal transmission line, disposed in a non-display area of the touch display device, and having a first end and a second end, wherein the first end is electrically connected to and directly contacts the adhesion layer, and the second end is electrically connected to the lower substrate.

### Claim 2 (depends on 1)

The touch display device as claimed in claim 1, wherein the touch display device is adapted to withstand electrostatic discharge of 8 kV.

### Claim 3 (depends on 1)

The touch display device as claimed in claim 1, wherein the plurality of touch electrodes comprise a plurality of sensing electrodes and a plurality of driving electrodes.

### Claim 4 (depends on 1)

The touch display device as claimed in claim 1, wherein each active device in the active device array is overlapped with the plurality of touch electrodes in a direction perpendicular to the lower substrate.

### Claim 5 (depends on 4)

The touch display device as claimed in claim 4, further comprising:
an insulation layer, disposed between the active devices and the plurality of touch electrodes to make the plurality of touch electrodes to be close to the upper substrate.

### Claim 6 (depends on 1)

The touch display device as claimed in claim 1, wherein the adhesion layer has a plurality of antistatic particles.

### Claim 7

(canceled)

### Claim 8 (depends on 1)

The touch display device as claimed in claim 1, wherein the first end of the signal transmission line is misaligned with the plurality of touch electrodes in a direction perpendicular to the lower substrate.

### Claim 9 (depends on 1)

The touch display device as claimed in claim 1, wherein the signal transmission line has a main body, the first end and the second end are located at two ends of the main body, and the main body directly contacts the upper substrate.

### Claim 10 (depends on 1)

The touch display device as claimed in claim 1, further comprising:
a bonding part, disposed on the lower substrate and located in the non-display area, wherein the second end of the signal transmission line is electrically connected to the bonding part to transmit static electricity to external of the touch display device.