Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-2020176529-A1
Application number	US-201916700199-A
Country	US
Kind code	A1
Filing date	Dec 2, 2019
Priority date	Dec 3, 2018
Publication date	Jun 4, 2020
Grant date	—

Abstract

An organic light emitting display device includes a substrate, a light emitting structure, a first conductive pattern, and a functional module. The substrate has an opening region, a peripheral region surrounding the opening region, and a display region surrounding the peripheral region, and includes a first groove, which has an enlarged lower portion, formed in the peripheral region and an opening formed in the opening region. The light emitting structure is in the display region on the substrate. The first conductive pattern overlaps the first groove in the peripheral region on the substrate. The functional module is in the opening of the substrate.

First claim

What is claimed is:

1 . An organic light emitting display (“OLED”) device, comprising:
a substrate having an opening region, a peripheral region surrounding the opening region, and a display region surrounding the peripheral region, the substrate including a first groove, which has an enlarged lower portion, formed in the peripheral region and an opening formed in the opening region;
a light emitting structure in the display region on the substrate;
a first conductive pattern overlapping the first groove in the peripheral region on the substrate; and
a functional module in the opening of the substrate.

2 . The OLED device as claimed in claim 1 , wherein the first conductive pattern includes:
a first sub-conductive pattern overlapping the first groove, the first sub-conductive pattern having a plan shape of a partially opened circle including an open portion; and second sub-conductive patterns extending from the open portion of the first sub-conductive pattern in an outward direction.

3 . The OLED device as claimed in claim 2 , further comprising:
pad electrodes on the substrate, the pad electrodes being electrically connected to an external device; and signal wirings, which are located on the substrate, disposed along an outer portion of the substrate, the signal wirings electrically connecting the second sub-conductive patterns and the pad electrodes.

4 . The OLED device as claimed in claim 1 , wherein the first groove surrounds the opening on the substrate.

5 . The OLED device as claimed in claim 4 , wherein the first groove has a plan shape of a circle.

6 . The OLED device as claimed in claim 1 , wherein the first conductive pattern, which is located on the first groove, is disposed along a profile of an outer portion of the first groove.

7 . The OLED device as claimed in claim 1 , wherein the substrate includes:
a first organic film layer; a first barrier layer on the first organic film layer; a second organic film layer on the first barrier layer, the second organic film layer having a trench in the peripheral region; and a second barrier layer on the second organic film layer, the second barrier layer being located on the trench and having a protruded portion that protrudes in an inner portion of the trench, the second barrier layer having an opening defined by the protruded portion.

8 . The OLED device as claimed in claim 7 , wherein the first conductive pattern overlaps the protruded portion of the second barrier layer.

9 . The OLED device as claimed in claim 7 , wherein the protruded portion of the second barrier layer includes:
a first protruded portion located adjacent to the opening of the substrate; and a second protruded portion facing the first protruded portion, the second protruded portion being spaced apart from the first protruded portion in a direction from the opening region into the peripheral region.

10 . The OLED device as claimed in claim 9 , further comprising:
a second conductive pattern, which is on the first protruded portion, overlapping the first protruded portion, wherein the first conductive pattern is overlapped on the second protruded portion.

11 . The OLED device as claimed in claim 10 , wherein the first conductive pattern and the second conductive pattern are connected to each other in a region of the peripheral region, and are integrally formed.

12 . The OLED device as claimed in claim 7 , wherein the trench of the second organic film layer, the protruded portion of the second barrier layer, and the opening of the second barrier layer are defined as the first groove having the enlarged lower portion.

13 . The OLED device as claimed in claim 1 , wherein the light emitting structure includes:
a lower electrode; a light emitting layer on the lower electrode; and an upper electrode on the light emitting layer.

14 . The OLED device as claimed in claim 13 , wherein the light emitting layer extends in a direction from the display region into the peripheral region on the substrate, and is separated in a portion where the first groove is formed.

15 . The OLED device as claimed in claim 13 , wherein the upper electrode extends in a direction from the display region into the peripheral region on the substrate, and is separated in a portion where the first groove is formed.

16 . The OLED device as claimed in claim 13 , wherein the light emitting layer and the upper electrode are in at least a portion of an inner portion of the first groove.

17 . The OLED device as claimed in claim 13 , further comprising:
a thin film encapsulation structure on the light emitting structure; and a touch screen structure in the display region on the thin film encapsulation structure.

18 . The OLED device as claimed in claim 17 , wherein the thin film encapsulation structure includes:
a first thin film encapsulation layer on the upper electrode, the first thin film encapsulation layer including inorganic materials that have flexibility; a second thin film encapsulation layer on the first thin film encapsulation layer, the second thin film encapsulation layer including organic materials that have flexibility; and a third thin film encapsulation layer on the second thin film encapsulation layer, the third thin film encapsulation layer including inorganic materials that have flexibility.

19 . The OLED device as claimed in claim 18 , wherein each of the first thin film encapsulation layer and the third thin film encapsulation layer extends in a direction from the display region into the peripheral region on the upper electrode, and is continuously in a portion where the first groove is formed.

20 . The OLED device as claimed in claim 18 , wherein the touch screen structure includes:
a first insulation layer in the display region on the third thin film encapsulation layer; a touch screen electrode on the first insulation layer; a second insulation layer on the touch screen electrode; a touch screen connection electrode on the second insulation layer; and a protective insulation layer on the touch screen connection electrode.

21 . The OLED device as claimed in claim 20 , wherein the first insulation layer extends in a direction from the display region into the peripheral region on the third thin film encapsulation layer, and is continuously in a portion where the first groove is formed.

22 . The OLED device as claimed in claim 20 , further comprising an organic insulation pattern in the peripheral region on the first insulation layer.

23 . The OLED device as claimed in claim 22 , wherein the second insulation layer is in contact with an upper surface of the first insulation layer in the display region, and is in contact with an upper surface of the organic insulation pattern in the peripheral region.

24 . The OLED device as claimed in claim 23 , wherein the first conductive pattern is between the second insulation layer and the protective insulation layer.

25 . The OLED device as claimed in claim 22 , wherein the functional module is in contact with a side surface of the substrate, a side surface of the light emitting layer, a side surface of the upper electrode, a side surface of the first thin film encapsulation layer, a side surface of the third thin film encapsulation layer, a side surface of the first insulation layer, a side surface of the organic insulation pattern, a side surface of the second insulation layer, and a

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Yoonsun
• Choi Wonsuk
• Jun Sang Hyun

Classifications

• H01L27/3276

  Electricity · mapped topic

• H01L51/0097

  Electricity · mapped topic

• H01L27/323

  Electricity · mapped topic

• H01L27/3234 Primary

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic