Display device

Patent metadata

Field	Value
Publication number	US-11437443-B2
Application number	US-202017060659-A
Country	US
Kind code	B2
Filing date	Oct 1, 2020
Priority date	Nov 14, 2019
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A display device includes a substrate having an active area and a non-active area where the non-active area includes a first and second routing areas; a transistor over the active area; a device insulating layer over the transistor; a pixel electrode over the device insulating layer and electrically connected to a source or drain electrode of the transistor via a contact hole in the device insulating layer; an emitting layer over the pixel electrode; a common electrode over the emitting layer; an encapsulation layer over the common electrode in the active area and the first routing area, and having an inclined surface in the first routing area; one or more dams at a boundary between the first and second routing areas and having a height higher than those of surroundings; and a side edge touch electrode in at least one of the first and second routing areas.

First claim

What is claimed is:

1. A display device, comprising:
a substrate comprising an active area on which images are displayed and a non-active area in which no images are displayed, the non-active area including a first routing area and a second routing area;
a transistor located over the substrate and in the active area;
a device insulating layer located over the transistor;
a pixel electrode located over the device insulating layer and electrically connected to a source electrode or a drain electrode of the transistor via a contact hole in the device insulating layer;
an emitting layer located over the pixel electrode;
a common electrode located over the emitting layer;
an encapsulation layer located over the common electrode, located in the active area and the first routing area, and having an inclined surface in the first routing area;
one or more dams located at a boundary between the first routing area and the second routing area; and
a side edge touch electrode located in at least one of the first routing area, the second routing area, or a combination thereof,
wherein the side edge touch electrode overlaps the inclined surface of the encapsulation layer in the first routing area of the non-active area or is located more outward than the one or more dams in the second routing area of the non-active area.

2. The display device according to claim 1 , wherein the side edge touch electrode overlaps the inclined surface of the encapsulation layer in the first routing area of the non-active area.

3. The display device according to claim 2 , wherein the side edge touch electrode overlapping the inclined surface of the encapsulation layer comprises a touch sensor material disposed in the active area.

4. The display device according to claim 1 , wherein the side edge touch electrode is located more outward than the one or more dams in the second routing area of the non-active area.

5. The display device according to claim 4 , wherein the side edge touch electrode located more outward than the one or more dams comprises a display electrode material or a touch sensor material disposed in the active area.

6. The display device according to claim 1 , further comprising:
a first insulating layer located under the side edge touch electrode;
a metal layer located under the first insulating layer;
a second insulating layer located under the metal layer; and
a gate electrode material layer located under the second insulating layer,
wherein the gate electrode material layer comprises a gate electrode material the same as a gate electrode of the transistor, and
the side edge touch electrode comprises a source/drain electrode material the same as a source electrode and a drain electrode of the transistor.

7. The display device according to claim 6 , wherein the side edge touch electrode is electrically connected to the metal layer via a contact hole in the first insulating layer, and
the metal layer is a layer increasing an effective electrode area of the side edge touch electrode or a side edge touch line through which a signal is transferred.

8. The display device according to claim 7 , wherein the metal layer is electrically connected to the gate electrode material layer via a contact hole in the second insulating layer, and
the gate electrode material layer is a layer increasing the effective electrode area of the side edge touch electrode or the side edge touch line through which a signal is transferred.

9. The display device according to claim 6 , wherein the side edge touch electrode is electrically connected to the gate electrode material layer via a double contact hole in the first insulating layer and the second insulating layer.

10. The display device according to claim 1 , further comprising:
a first insulating layer located under the side edge touch electrode;
a metal layer located under the first insulating layer;
a second insulating layer located under the metal layer; and
a gate electrode material layer located under second insulating layer,
wherein the gate electrode material layer comprises a gate electrode material the same as a gate electrode of the transistor, and the side edge touch electrode comprises a pixel electrode material the same as the pixel electrode.

11. The display device according to claim 10 , wherein a source/drain electrode material layer is located over the first insulating layer in the active area, a pixel electrode material layer providing the side edge touch electrode is located over the first insulating layer in the non-active area,
the side edge touch electrode is electrically connected to the metal layer via a contact hole in the first insulating layer or electrically connected to the gate electrode material layer via a double contact hole in the first insulating layer and the second insulating layer, and
the metal layer or the gate electrode material layer is a layer increasing an effective electrode area of the side edge touch electrode or a side edge touch line through which a signal is transferred.

12. The display device according to claim 11 , wherein, in a case in which the side edge touch electrode is electrically connected to the metal layer via the contact hole in the first insulating layer, the metal layer is electrically connected to the gate electrode material layer via a contact hole in the second insulating layer.

13. The display device according to claim 10 , further comprising:
a source/drain electrode material layer located over the first insulating layer and comprising a source/drain electrode material the same as a source electrode and a drain electrode of the transistor; and
a peripheral insulating layer located over the source/drain electrode material layer, located under the side edge touch electrode, comprising an insulating material the same as the device insulating layer, and located in the non-active area,
wherein the side edge touch electrode is electrically connected to the source/drain electrode material layer via a contact hole in the peripheral insulating layer, and
the source/drain electrode material layer is a layer increasing an effective electrode area of the side edge touch electrode or a side edge touch line through which a signal is transferred.

14. The display device according to claim 13 , wherein the source/drain electrode material layer is electrically connected to the metal layer via a contact hole in the first insulating layer or electrically connected to the gate electrode material layer via a double contact hole in the first insulating layer and the second insulating layer.

15. The display device according to claim 14 , wherein, in a case in which the source/drain electrode material layer is electrically connected to the metal layer via the contact hole in the first insulating layer, the metal layer is electrically connected to the gate electrode material layer via a contact hole in the second insulating layer.

16. The display device according to claim 10 , wherein the side edge touch electrode is electrically connected to the metal layer via a double contact hole in the peripheral insulating layer and the first insulating layer or electrically connected to the gate electrode material layer via a triple contact hole in the peripheral insulating layer, the first insulating layer, and the second insulating layer, and
the metal layer or the gate electrode material layer is a layer increasing an effective electrode area of the side edge touch electrode or a side edge touch line through which a signal is transferred.

17. The display device according to claim 1 , further co

Assignees

• Lg Display Co Ltd

Inventors

• Lee Yangsik
• Jo Jungho

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• H04M1/0266

  for a display module assembly · CPC title