Display device including a dam structure and electronic device including the same

Patent metadata

Field	Value
Publication number	US-2025324889-A1
Application number	US-202519009474-A
Country	US
Kind code	A1
Filing date	Jan 3, 2025
Priority date	Apr 15, 2024
Publication date	Oct 16, 2025
Grant date	—

Abstract

A display device includes an inorganic insulating layer. A touch insulating layer is disposed on the inorganic insulating layer. A touch contact layer is disposed on the touch insulating layer. A touch protection layer is disposed on the touch contact layer. An outer dam is disposed on the inorganic insulating layer, overlapping the peripheral area, including a same material as the touch protection layer, and contacting the inorganic insulating layer. An overcoating layer is disposed on the touch protection layer.

First claim

What is claimed is:

1 . A display device, comprising:
a substrate including a display area and a peripheral area adjacent to the display area; at least one inorganic insulating layer disposed on the substrate and overlapping the display area and the peripheral area; an emission layer disposed on the inorganic insulating layer and overlapping the display area; a touch insulating layer disposed on the emission layer; a touch contact layer disposed on the touch insulating layer; a touch protection layer disposed on the touch contact layer and overlapping the display area; at least one outer dam disposed on the inorganic insulating layer, overlapping the peripheral area, including a same material as the touch protection layer, and contacting the inorganic insulating layer; and an overcoating layer disposed on the touch protection layer.

2 . The display device of claim 1 , wherein the outer dam directly contacts the inorganic insulating layer.

3 . The display device of claim 1 , wherein neither the touch insulating layer nor the touch contact layer are disposed between the outer dam and the inorganic insulating layer.

4 . The display device of claim 1 , wherein the inorganic insulating layer includes an inorganic material, and
wherein each of the touch protection layer and the outer dam include an organic material.

5 . The display device of claim 4 , wherein the touch contact layer includes an organic material.

6 . The display device of claim 1 , further comprising:
an active pattern disposed on the substrate; a first gate electrode disposed on the active pattern; and a second gate electrode disposed on the first gate electrode.

7 . The display device of claim 6 , wherein the inorganic insulating layer includes:
a first inorganic insulating layer disposed between the substrate and the active pattern; a second insulating layer disposed between the active pattern and the first gate electrode; and a third insulating layer disposed between the first gate electrode and the second gate electrode.

8 . The display device of claim 1 , further comprising:
an encapsulation layer disposed between the inorganic insulating layer and the touch insulating layer, wherein the encapsulation layer includes:
a first inorganic encapsulation layer disposed on the inorganic insulating layer;
an organic encapsulation layer disposed on the first inorganic encapsulation layer; and
a second inorganic encapsulation layer disposed on the organic encapsulation layer.

9 . The display device of claim 1 , further comprising:
a via insulating layer disposed between the inorganic insulating layer and the emission layer, and overlapping the display area; and at least one inner dam disposed on the inorganic insulating layer, overlapping the peripheral area, including a same material as the via insulating layer, and contacting the inorganic insulating layer.

10 . The display device of claim 1 , further comprising:
a first touch electrode disposed on the touch insulating layer; and a second touch electrode disposed on the touch contact layer.

11 . A display device, comprising:
a substrate including a display area and a peripheral area adjacent to the display area; an emission layer disposed on the substrate and overlapping the display area; a touch insulating layer disposed on the emission layer; a first touch electrode disposed on the touch insulating layer and overlapping the display area; a touch contact layer disposed on the touch insulating layer, covering a first touch electrode, and overlapping the display area and the peripheral area; a second touch electrode disposed on the touch contact layer and overlapping the display area; a touch protection layer disposed on the touch contact layer, covering the second touch electrode, and overlapping the display area; at least one metal pattern disposed on the touch contact layer, overlapping the peripheral area, and including a same material as the second touch electrode; at least one outer dam disposed on the touch contact layer, overlapping the peripheral area, including a same material as the touch protection layer, and covering the metal pattern; and an overcoating layer disposed on the touch protection layer.

12 . The display device of claim 11 , wherein the outer dam directly contacts the metal pattern.

13 . The display device of claim 11 , wherein the touch protection layer and the outer dam include an organic material.

14 . The display device of claim 13 , wherein the touch contact layer includes an organic material.

15 . The display device of claim 11 , wherein the metal pattern contacts the touch contact layer in the peripheral area.

16 . The display device of claim 15 , wherein the touch contact layer contacting the metal pattern has an undercut shape.

17 . The display device of claim 11 , further comprising:
an active pattern disposed on the substrate; a first gate electrode disposed on the active pattern; a second gate electrode disposed on the first gate electrode; a connection electrode disposed on the second electrode; a pixel electrode disposed between the connection electrode and the emission layer; and a common electrode disposed on the emission layer.

18 . The display device of claim 17 , further comprising:
a first inorganic encapsulation layer disposed on the common layer; an organic encapsulation layer disposed on the first inorganic encapsulation layer; and a second inorganic encapsulation layer disposed on the organic encapsulation layer.

19 . The display device of claim 11 , further comprising:
at least one via insulating layer disposed under the emission layer and overlapping the display area; and at least one inner dam disposed on the substrate, overlapping the peripheral area, and including a same material as the via insulating layer.

20 . An electronic device, comprising:
a display device; and a power supply configured to provide power to the display device, wherein the display device comprises: a substrate including a display area and a peripheral area adjacent to the display area; at least one inorganic insulating layer disposed on the substrate and overlapping the display area and the peripheral area; an emission layer disposed on the inorganic insulating layer and overlapping the display area; a touch insulating layer disposed on the emission layer; a touch contact layer disposed on the touch insulating layer; a touch protection layer disposed on the touch contact layer and overlapping the display area; at least one outer dam disposed on the inorganic insulating layer, overlapping the peripheral area, including a same material as the touch protection layer, and contacting the inorganic insulating layer; and an overcoating layer disposed on the touch protection layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Donghee
• Park Sungkyun
• Park Yong-Hwan

Classifications

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• H10H29/37

  Pixel-defining structures, e.g. banks between the LEDs · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/8052

  Cathodes · CPC title