Self-aligned display appartus

Patent metadata

Field	Value
Publication number	US-12040425-B2
Application number	US-202117460116-A
Country	US
Kind code	B2
Filing date	Aug 27, 2021
Priority date	Jul 12, 2016
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A display apparatus includes a substrate, a first electrode on the substrate, the first electrode including a first portion that has a flat upper surface and a second portion that protrudes from the first portion and has an inclined surface, a second electrode facing the first electrode in parallel on the substrate, the second electrode including a first portion that has a flat upper surface and a second portion that protrudes from the first portion and has an inclined surface, and a plurality of light-emitting devices separate from each other on the first electrode and the second electrode, the light-emitting devices each having a first end contacting the upper surface of the first portion of the first electrode and a second end contacting the upper surface of the first portion of the second electrode.

First claim

What is claimed is:

1. A display apparatus comprising: a first electrode on a substrate; a second electrode on the substrate, the second electrode being opposite the first electrode; a plurality of light-emitting devices between the first electrode and the second electrode, in a plan view; a third electrode on the first electrode and electrically connecting the first electrode and a first end of each of the light-emitting devices, the third electrode extending beyond a periphery of the plurality of light-emitting devices; and a fourth electrode on the second electrode and electrically connecting the second electrode and a second end of each of the light-emitting devices, the fourth electrode extending beyond the periphery of the plurality of light-emitting devices, wherein a distance between the first electrode and the second electrode is less than a length of the plurality of light-emitting devices, and wherein an uppermost surface of the first electrode and an uppermost surface of the second electrode facing away from the substrate are above a bottom surface of the plurality of light-emitting devices facing toward the substrate.

2. The display apparatus of claim 1 , further comprising
a thin film transistor comprising a semiconductor layer; and
an electrode layer electrically connecting the semiconductor layer and one of the first electrode and the second electrode.

3. The display apparatus of claim 2 , wherein the semiconductor layer comprises a silicon semiconductor or oxide semiconductor.

4. The display apparatus of claim 2 , further comprising a power line electrically connected to an other one of the first electrode and the second electrode.

5. The display apparatus of claim 4 , further comprising an auxiliary line at a layer between the substrate and the power line.

6. The display apparatus of claim 5 , wherein the auxiliary line and the semiconductor layer of the thin film transistor are at a same layer.

7. The display apparatus of claim 1 , further comprising an insulation layer having an opening corresponding to the plurality of light-emitting devices on the substrate.

8. The display apparatus of claim 7 , wherein the insulation layer comprises an organic material.

9. The display apparatus of claim 1 , further comprising:
a first electrode line connected to the first electrode; and
a second electrode line connected to the second electrode.

10. The display apparatus of claim 9 , further comprising a partition wall overlapping the first electrode line and the second electrode line.

11. The display apparatus of claim 1 , wherein two sides of each of the plurality of light-emitting devices face a part of the first electrode and a part of the second electrode, respectively.

12. The display apparatus of claim 1 , wherein each of the first electrode and the second electrode comprises a portion facing one of two sides of each of the plurality of light-emitting devices.

13. The display apparatus of claim 1 , wherein the plurality of light-emitting devices directly contact each of the first electrode and the second electrode.

14. The display apparatus of claim 13 , wherein the plurality of light-emitting devices directly contact each of the third electrode and the fourth electrode.

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Hyunmin
• Kim Daehyun
• Kim Sungchul
• Kang Jonghyuk
• Song Keunkyu
• Lee Jooyeol
• Im Hyundeok
• Cho Chio
• Chu Hyeyong
• Hong Sungjin

Classifications

• H10W72/0198

  batch processes · CPC title

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/831 Primary

  characterised by their shape · CPC title

• H10H20/01

  Manufacture or treatment · CPC title

• H10H20/032

  of electrodes · CPC title