Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2024324347-A1
Application number	US-202318531428-A
Country	US
Kind code	A1
Filing date	Dec 6, 2023
Priority date	Mar 24, 2023
Publication date	Sep 26, 2024
Grant date	—

Abstract

A display apparatus includes: a first display element configured to emit light of a first color and including a first pixel electrode; a second display element configured to emit light of a second color different from the first color, and including a second pixel electrode; a third display element configured to emit light of a third color different from the first color and the second color, and including a third pixel electrode; a fourth display element configured to emit light of the first color and including a fourth pixel electrode; and a first connection line connecting the first pixel electrode and the fourth pixel electrode to each other, the first connection line directly contacting the first pixel electrode and the fourth pixel electrode.

First claim

What is claimed is:

1 . A display apparatus comprising:
a first display element configured to emit light of a first color and including a first pixel electrode; a second display element configured to emit light of a second color different from the first color, and including a second pixel electrode; a third display element configured to emit light of a third color different from the first color and the second color, and including a third pixel electrode; a fourth display element configured to emit light of the first color and including a fourth pixel electrode; and a first connection line connecting the first pixel electrode and the fourth pixel electrode to each other, the first connection line directly contacting the first pixel electrode and the fourth pixel electrode.

2 . The display apparatus of claim 1 , wherein, in a plan view, an edge of the first connection line surrounds an edge of the first pixel electrode and an edge of the fourth pixel electrode.

3 . The display apparatus of claim 1 , wherein the first pixel electrode and the fourth pixel electrode are on the first connection line.

4 . The display apparatus of claim 3 , wherein the first connection line includes poly indium tin oxide.

5 . The display apparatus of claim 1 , wherein the first connection line covers the first pixel electrode and the fourth pixel electrode.

6 . The display apparatus of claim 1 , further comprising a pixel-defining layer including an opening exposing at least a portion of each of the first to fourth display elements, directly contacting the first connection line partially, and including an inorganic material.

7 . The display apparatus of claim 1 , further comprising:
a substrate including a first region and a second region adjacent to each other; a pixel circuit in the second region and configured to drive the first display element and the fourth display element; a circuit connection line electrically connected to the pixel circuit and extending from the second region to the first region; and an inorganic insulating layer covering the circuit connection line and extending from the second region to the first region, wherein the first connection line is on the inorganic insulating layer, and the first connection line, the first pixel electrode, and the fourth pixel electrode are in the first region.

8 . The display apparatus of claim 7 , wherein the circuit connection line and the first connection line each include a transparent conductive material.

9 . The display apparatus of claim 1 , further comprising:
a fifth display element configured to emit light of the second color and including a fifth pixel electrode; and a second connection line connecting the second pixel electrode and the fifth pixel electrode to each other, wherein the first display element and the third display element are arranged in a first direction, and the second display element and the fifth display element are arranged in a second direction crossing the first direction.

10 . The display apparatus of claim 9 , further comprising:
a sixth display element configured to emit light of the third color and including a sixth pixel electrode; and a third connection line connecting the third pixel electrode and the sixth pixel electrode to each other, wherein the third display element and the sixth display element are arranged in the first direction.

11 . A method of manufacturing a display apparatus, the method comprising:
forming a first display element configured to emit light of a first color and including a first pixel electrode; forming a second display element configured to emit light of a second color different from the first color, and including a second pixel electrode; forming a third display element configured to emit light of a third color different from the first color and the second color, and including a third pixel electrode; forming a fourth display element configured to emit light of the first color and including a fourth pixel electrode; and forming a first connection line by curing a first material layer, wherein the first connection line connects the first pixel electrode and the fourth pixel electrode to each other and contacts lower surfaces of the first pixel electrode and the fourth pixel electrode.

12 . The method of claim 11 , wherein the forming of the first connection line is performed before the first pixel electrode and the fourth pixel electrode are formed.

13 . The method of claim 11 , wherein the first connection line includes a transparent conductive material.

14 . The method of claim 13 , wherein the first material layer includes amorphous indium tin oxide, and
the first connection line includes poly indium tin oxide.

15 . The method of claim 11 , wherein the curing of the first material layer is performed at temperature of 200° C. or more.

16 . The method of claim 11 , wherein, in a plan view, an edge of the first connection line surrounds an edge of the first pixel electrode and an edge of the fourth pixel electrode.

17 . The method of claim 11 , further comprising:
forming a substrate including a first region and a second region adjacent to each other; forming a pixel circuit in the second region and configured to drive the first display element and the fourth display element; forming a circuit connection line electrically connected to the pixel circuit and extending from the second region to the first region; and forming an inorganic insulating layer covering the circuit connection line and extending from the second region to the first region, wherein the first connection line, the first pixel electrode, and the fourth pixel electrode are in the first region.

18 . The method of claim 17 , wherein the forming of the circuit connection line is performed before the forming of the first connection line.

19 . The method of claim 11 , further comprising:
forming a fifth display element configured to emit light of the second color and including a fifth pixel electrode; and forming a second connection line connecting the second pixel electrode and the fifth pixel electrode to each other, wherein the first display element and the third display element are arranged in a first direction, and the second display element and the fifth display element are arranged in a second direction crossing the first direction.

20 . The method of claim 11 , further comprising forming a pixel-defining layer including an opening exposing at least a portion of each of the first to fourth display elements, directly contacting the first connection line partially, and including an inorganic material.

Assignees

• Samsung Display Co Ltd

Inventors

• Shim Donghwan
• Park Kwangwoo
• Park Hyemin
• Lee Eonjoo
• Lee Jinyong
• Jang Cheol
• Jo Yongseon

Classifications

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/60

  OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes · CPC title

• H10K59/123

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title

• H10K59/121

  characterised by the geometry or disposition of pixel elements · CPC title