Touch display device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-9608048-B2
Application number	US-201414537880-A
Country	US
Kind code	B2
Filing date	Nov 10, 2014
Priority date	Jun 30, 2014
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A touch display device and a method for manufacturing the same are provided. The touch display device includes a first substrate, a second substrate disposed opposite to the first substrate, and at least one touch signal transmission unit. The touch signal transmission unit includes: a first conductive layer located above a side of the first substrate facing the second substrate; a second conductive layer located above a side of the second substrate facing the first substrate; a touch signal transmission layer, located between the second conductive layer and the second substrate and electrically connected to the first conductive layer via the second conductive layer; and a spacer located between the first substrate and the second substrate, where a vertical projection of the spacer onto the first substrate at least partially overlaps vertical projections of the first conductive layer and the second conductive layer onto the first substrate.

First claim

What is claimed is:

1. A touch display device, comprising:
a first substrate;
a second substrate disposed opposite to the first substrate; and
at least one touch signal transmission unit disposed at a periphery region of the touch display device, the at least one touch signal transmission unit comprising:
a first conductive layer located above a side of the first substrate facing the second substrate;
a second conductive layer located above a side of the second substrate facing the first substrate;
a touch signal transmission layer located between the second conductive layer and the second substrate and electrically connected to the first conductive layer via the second conductive layer; and
a spacer located between the first substrate and the second substrate, a vertical projection of the spacer onto the first substrate at least partially overlapping respective vertical projections of the first conductive layer and the second conductive layer onto the first substrate,
wherein the spacer is disposed in the at least one touch signal transmission unit, and the first conductive layer is in contact with the second conductive layer without a touch occurring in a display region of the touch display device.

2. The touch display device according to claim 1 , wherein the spacer is disposed above the first substrate and located between the first substrate and the first conductive layer.

3. The touch display device according to claim 1 , further comprising a thin film transistor element layer on the first substrate, wherein the thin film transistor element layer comprises a plurality of thin film transistor switches.

4. The touch display device according to claim 3 , further comprising an organic light-emitting pixel layer disposed on the thin film transistor element layer,
wherein the organic light-emitting pixel layer comprises a first electrode layer and a pixel defining layer on the first electrode layer, and
the first conductive layer is also a second electrode layer of the organic light-emitting pixel layer and is disposed on the pixel defining layer.

5. The touch display device according to claim 4 , wherein the touch signal transmission unit is located in a transmission contact region and a transmission periphery region, at least one separation pattern is disposed in the transmission periphery region, and the transmission contact region is surrounded by the at least one separation pattern.

6. The touch display device according to claim 5 , wherein the at least one separation pattern comprises at least two separation patterns in a nested relationship to each other, each of the at least two separation patterns being enclosed and the at least two separation patterns are rectangular, circular or polygonal.

7. The touch display device according to claim 4 , wherein the spacer is disposed between the pixel defining layer and the first conductive layer.

8. The touch display device according to claim 1 , further comprising a thin film transistor element layer on the first substrate,
wherein the thin film transistor element layer comprises a plurality of thin film transistor switches, the first conductive layer is disposed on the thin film transistor element layer, and the first conductive layer is also a pixel electrode layer of the touch display device.

Assignees

• Shanghai Tianma Am-Oled Co Ltd
• Tianma Microelectronics Co Ltd

Inventors

• Su Congyi

Classifications

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• H01L27/323 Primary

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic