Display apparatus

Patent metadata

Field	Value
Publication number	US-2024306439-A1
Application number	US-202318505557-A
Country	US
Kind code	A1
Filing date	Nov 9, 2023
Priority date	Mar 7, 2023
Publication date	Sep 12, 2024
Grant date	—

Abstract

A display apparatus that is flexible and robust includes a substrate defining a first area and a second area, the first area including a plurality of first pixel and a plurality of first separation areas between first pixel areas adjacent to each other in the first direction, the second area including a plurality of second pixel areas, a first insulating layer having a plurality of first trenches and a plurality of second trenches, the plurality of first trenches respectively corresponding to boundaries between first pixel areas arranged in the first direction and the plurality of first separation areas, the plurality of second trenches corresponding to boundaries between second pixel areas arranged in the first direction, a plurality of first separation layers buried in the plurality of first trenches, and a plurality of second separation layers buried in the plurality of second trenches.

First claim

What is claimed is:

1 . A display apparatus comprising:
a substrate defining a first area and a second area, the first area comprising a plurality of first pixel areas arranged in a first direction and a second direction and a plurality of first separation areas disposed between first pixel areas of the plurality of first pixel areas disposed adjacent to each other in the first direction, and the second area comprising a plurality of second pixel areas arranged in the first direction and the second direction; a first insulating layer disposed on the substrate and having a plurality of first trenches and a plurality of second trenches, the plurality of first trenches being arranged in the first direction and corresponding to boundaries between first pixel areas of the plurality of first pixel areas arranged in the first direction and the plurality of first separation areas, the plurality of second trenches being arranged in the first direction and corresponding to boundaries between second pixel areas of the plurality of second pixel areas arranged in the first direction; a plurality of first separation layers buried in the plurality of first trenches and including a material that is different from a material of the first insulating layer; and a plurality of second separation layers buried in the plurality of second trenches and including a material that is different from the material of the first insulating layer.

2 . The display apparatus of claim 1 , wherein a first length of each of the plurality of first pixel areas in the first direction is substantially equal to a second length of each of the plurality of second pixel areas in the first direction, and
wherein a third length of each of the plurality of first separation areas in the first direction is less than the first length.

3 . The display apparatus of claim 1 , wherein a first interval between some first separation layers disposed adjacent to each other in the first direction among the plurality of first separation layers is substantially equal to a second interval between second separation layers disposed adjacent to each other in the first direction among the plurality of second separation layers, and
wherein a third interval between other first separation layers disposed adjacent to each other in the first direction among the plurality of first separation layers is less than the first interval.

4 . The display apparatus of claim 1 , wherein first pixel areas arranged in the first direction among the plurality of first pixel areas and the plurality of first separation areas are alternately arranged in the first direction, and
wherein second pixel areas arranged in the first direction among the plurality of second pixel areas are disposed adjacent to each other, and second pixel areas arranged in the second direction among the plurality of second pixel areas are spaced apart from each other.

5 . The display apparatus of claim 1 , wherein the first area further comprises a plurality of second separation areas disposed between first pixel areas adjacent to each other in the second direction among the plurality of first pixel areas,
the second area further comprises a plurality of third separation areas disposed between second pixel areas disposed adjacent to each other in the second direction among the plurality of second pixel areas, the first insulating layer further has a plurality of third trenches and a plurality of fourth trenches, the plurality of third trenches being arranged in the second direction and corresponding to boundaries between the first pixel areas arranged in the second direction among the plurality of first pixel areas and the plurality of second separation areas, and the plurality of fourth trenches being arranged in the second direction and corresponding to boundaries between the second pixel areas arranged in the second direction among the plurality of second pixel areas and the plurality of third separation areas, and the display apparatus further comprises: a plurality of third separation layers buried in the plurality of third trenches and including a material that is different from a material of the first insulating layer; and a plurality of fourth separation layers buried in the plurality of fourth trenches and including a material that is different from the material of the first insulating layer.

6 . The display apparatus of claim 5 , wherein a first length of each of the plurality of first pixel areas in the first direction is substantially equal to a second length of each of the plurality of second pixel areas in the first direction,
a third length of each of the plurality of first separation areas in the first direction is less than the first length of each of the plurality of first pixel areas in the first direction, a fourth length of each of the plurality of first pixel areas in the second direction is substantially equal to a fifth length of each of the plurality of second pixel areas in the second direction, a sixth length of each of the plurality of second separation areas in the second direction is less than the fourth length of each of the plurality of first pixel areas in the second direction, and a seventh length of each of the plurality of third separation areas in the second direction is substantially equal to the sixth length of each of the plurality of second separation areas in the second direction.

7 . The display apparatus of claim 5 , wherein a first interval between some first separation layers disposed adjacent to each other in the first direction among the plurality of first separation layers is substantially equal to a second interval between second separation layers disposed adjacent to each other in the first direction among the plurality of second separation layers,
a third interval between other first separation layers disposed adjacent to each other in the first direction among the plurality of first separation layers is less than the first interval, a fourth interval between some third separation layers disposed adjacent to each other in the second direction among the plurality of third separation layers is substantially equal to a fifth interval between some fourth separation layers disposed adjacent to each other in the second direction among the plurality of fourth separation layers, a sixth interval between other third separation layers disposed adjacent to each other in the second direction among the plurality of third separation layers is less than the fourth interval, and a seventh interval between other fourth separation layers disposed adjacent to each other in the second direction among the plurality of fourth separation layers is substantially equal to the sixth interval.

8 . The display apparatus of claim 1 , wherein a first thickness of each of the plurality of first separation layers in a thickness direction of the substrate is greater than a second thickness of each of the plurality of second separation layers in the thickness direction of the substrate.

9 . The display apparatus of claim 1 , wherein a plurality of first areas and a plurality of second areas are provided, and
wherein the plurality of first areas and the plurality of second areas are alternately arranged in the first direction.

10 . The display apparatus of claim 1 , further comprising:
a plurality of first pixel circuits disposed on some second pixel areas among the plurality of second pixel areas; a plurality of second pixel circuits disposed on other second pixel areas among the plurality of second pixel areas; a plurality of first display elements disposed on the first area and electrically connected to the plurality of first pixel circuits; and a plurality of second di

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Jonghyun
• Kim Younjoon
• Oh Minjeong

Classifications

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• H10K59/121

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

• H10K59/12 Primary

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K2102/351

  Thickness · CPC title

• H10K2102/311

  Flexible OLED · CPC title