Display device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-2022149321-A1
Application number	US-202117336096-A
Country	US
Kind code	A1
Filing date	Jun 1, 2021
Priority date	Nov 9, 2020
Publication date	May 12, 2022
Grant date	—

Abstract

A display device and a manufacturing method thereof, and a display device including: a substrate including a display area, an opening area positioned in the display area, and a peripheral area positioned between the opening area and the display area; a transistor positioned in the display area of the substrate; a first electrode connected to the transistor; a second electrode positioned on the first electrode; an inorganic pattern portion positioned in the peripheral area of the substrate; and an intermediate layer positioned between the first electrode and the second electrode, and including at least one organic layer positioned on the inorganic pattern portion. The inorganic pattern portion includes a plurality of inorganic patterns spaced apart from each other.

First claim

What is claimed is:

1 . A display device comprising:
a substrate including a display area, an opening area positioned in the display area, and a peripheral area positioned between the opening area and the display area; a transistor positioned in the display area of the substrate; a first electrode connected to the transistor; a second electrode positioned on the first electrode; an inorganic pattern portion positioned in the peripheral area of the substrate; and an intermediate layer positioned between the first electrode and the second electrode, and including at least one organic layer positioned on the inorganic pattern portion, wherein the inorganic pattern portion includes a plurality of inorganic patterns spaced apart from each other.

2 . The display device of claim 1 , wherein the intermediate layer is positioned on an upper surface of the inorganic pattern portion, and does not extend over a lateral surface of the inorganic pattern portion.

3 . The display device of claim 2 , wherein the intermediate layer is not positioned among adjacent inorganic patterns.

4 . The display device of claim 2 , wherein the intermediate layer positioned in the display area is separated from the intermediate layer positioned on the inorganic pattern portion.

5 . The display device of claim 2 , wherein the second electrode does not overlap the inorganic pattern portion.

6 . The display device of claim 1 , further comprising an inorganic insulating layer positioned among a plurality of layers configuring the transistor,
wherein the inorganic pattern portion includes a same material as the inorganic insulating layer.

7 . The display device of claim 6 , wherein:
the inorganic insulating layer includes a first inorganic insulating layer and a second inorganic insulating layer; and the inorganic pattern includes:
a first inorganic pattern layer including a same material as the first inorganic insulating layer; and
a second inorganic pattern layer including a same material as the second inorganic insulating layer.

8 . The display device of claim 6 , wherein:
the inorganic insulating layer includes at least three inorganic insulating layers; and the inorganic pattern includes at least three inorganic pattern layers including the same material as the inorganic insulating layer.

9 . The display device of claim 6 , wherein:
an end of the inorganic insulating layer is positioned on a boundary portion between the display area and the peripheral area; and the intermediate layer is separated at the end of the inorganic insulating layer.

10 . The display device of claim 9 , wherein the intermediate layer is positioned on an upper surface of the end of the inorganic insulating layer, and is not positioned on a lateral surface of the inorganic insulating layer.

11 . The display device of claim 1 , wherein an angle between a lateral surface of the inorganic pattern and an upper surface of the substrate is equal to or greater than 75 degrees and equal to or less than 120 degrees.

12 . The display device of claim 11 , wherein the lateral surface of the inorganic pattern is perpendicular to the upper surface of the substrate.

13 . The display device of claim 1 , wherein the inorganic pattern has a reverse taper shape.

14 . The display device of claim 1 , wherein the opening area overlaps an electronic module.

15 . The display device of claim 1 , wherein:
the intermediate layer includes an organic function layer; and the organic function layer includes at least one of a hole injection layer, a hole transporting layer, an electron transporting layer, and an electron injection layer.

16 . A method for manufacturing a display device, comprising:
forming an inorganic insulating layer and a transistor in a display area of a substrate; forming an inorganic pattern portion and a sacrificial layer in an opening area positioned in a display area of the substrate and in a peripheral area positioned between the opening area and the display area; forming a first electrode connected to the transistor; forming an intermediate material layer entirely on the substrate; forming a second electrode material layer on the intermediate material layer; and separating the sacrificial layer, a portion of the intermediate material layer and a portion of the second electrode material layer positioned on the sacrificial layer from the substrate by irradiating laser beams to the inorganic pattern portion.

17 . The method of claim 16 , wherein:
the inorganic pattern portion includes a plurality of inorganic patterns spaced apart from each other; and the sacrificial layer is formed on a lateral surface of the inorganic pattern portion.

18 . The method of claim 17 , wherein:
the inorganic pattern portion includes a same material as at least part of the inorganic insulating layer; the sacrificial layer includes a same material as at least some of a plurality of layers configuring the transistor; and an angle between a lateral surface of the inorganic pattern and an upper surface of the substrate is equal to or greater than 75 degrees and equal to or less than 120 degrees.

19 . The method of claim 16 , wherein the irradiation of the laser beams removes the intermediate material layer positioned on the lateral surface of the inorganic pattern, and the intermediate material layer positioned on the upper surface of the inorganic pattern remains.

20 . The method of claim 16 , wherein the irradiation of the laser beams removes the second electrode material layer positioned on the inorganic pattern and among the inorganic patterns.

Assignees

• Samsung Display Co Ltd

Inventors

• Jeon Woo Sik
• Kim Sang Yeol
• Sung Tae Hyun
• Hong Seung Soo
• Oh Eon Seok

Classifications

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K59/122 Primary

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

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01L51/5253 Primary

  Electricity · mapped topic