Touch display panel, display device and method for manufacturing touch display panel

Patent metadata

Field	Value
Publication number	US-11099673-B2
Application number	US-201916645806-A
Country	US
Kind code	B2
Filing date	Mar 12, 2019
Priority date	May 23, 2018
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

Disclosed is a touch display panel, a display device and a method for manufacturing a touch display panel. The touch display panel includes a ground wire and a switching element. The ground wire is configured to allow static electricity in the touch display panel to be discharged through the ground wire. The switching element is configured to be turned on or turned off according to an operating state of the touch display panel to control whether the static electricity is discharged through the ground wire.

First claim

We claim:

1. A touch display panel, comprising:
a ground wire configured to allow static electricity in the touch display panel to be discharged through the ground wire,
a switching element configured to be turned on or turned off according to an operating state of the touch display panel to control whether the static electricity is discharged through the ground wire,
an array substrate, wherein the switching element is in the array substrate,
a light shielding layer,
an upper polarizing layer, and
a conductive adhesive layer,
wherein at least two of a ground terminal of the array substrate, a ground terminal of the light shielding layer and a ground terminal of the upper polarizing layer are electrically connected to the ground wire through the conductive adhesive layer.

2. The touch display panel of claim 1 , wherein
the operating state of the touch display panel comprises a touching state and a displaying state, and
the switching element is configured to be turned off in response to the touching state such that the static electricity is not discharged through the ground wire and to be turned on in response to the displaying state such that the static electricity is discharged through the ground wire.

3. The touch display panel of claim 1 , further comprising an array substrate, wherein the switching element is in the array substrate.

4. The touch display panel of claim 3 , wherein the ground wire is electrically connected to a ground terminal of the array substrate.

5. The touch display panel of claim 1 , further comprising a light shielding layer, wherein a ground terminal of the light shielding layer is electrically connected to the ground wire.

6. The touch display panel of claim 1 , further comprising an upper polarizing layer, wherein a ground terminal of the upper polarizing layer is electrically connected to the ground wire.

7. A display device, comprising the touch display panel according to claim 1 .

8. A method for manufacturing a touch display panel, comprising:
providing an array substrate comprising a switching element, wherein the switching element comprises a signal receiving terminal and a controlling terminal,
providing a light shielding layer and an upper polarizing layer on the array substrate,
providing a conductive adhesive layer such that at least two of a ground terminal of the array substrate, a ground terminal of the light shielding layer and a ground terminal of the upper polarizing layer are each electrically connected to the conductive adhesive layer,
providing a signal outputting terminal configured to output a signal indicating an operating state of the touch display panel,
electrically connecting the signal receiving terminal of the switching element to the signal outputting terminal, and
forming a ground wire electrically connected to the controlling terminal of the switching element and electrically connected to the conductive adhesive layer.

9. The method of claim 8 , wherein forming the ground wire electrically connected to the controlling terminal of the switching element comprises:
electrically connecting the ground wire to a ground terminal of the array substrate.

10. The method of claim 8 , wherein forming the ground wire electrically connected to the controlling terminal of the switching element comprises:
electrically connecting the ground wire to at least one of a ground terminal of the array substrate, a ground terminal of the light shielding layer and a ground terminal of the upper polarizing layer.

11. The method of claim 8 , wherein providing the array substrate comprising the switching element comprises:
providing a substrate,
forming the switching element on the substrate, and
forming a pixel switching element on the substrate,
wherein forming the switching element on the substrate and forming the pixel switching element on the substrate are conducted simultaneously and adopt a same process.

Assignees

• Ordos Yuansheng Optoelectronics Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Xu Jingyi
• Wang Yuelin
• Wang Guangshuai
• Ren Yanwei
• Huo Peirong
• Fan Xintong
• Chao Jinyu

Classifications

• G09G3/20

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/047

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

• G09G2330/04

  Display protection · CPC title

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title