Pixel structure, display device including the pixel structure, and method of manufacturing the pixel structure

Patent metadata

Field	Value
Publication number	US-11424229-B2
Application number	US-201916299735-A
Country	US
Kind code	B2
Filing date	Mar 12, 2019
Priority date	Jun 14, 2016
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

A pixel structure, a display device, and a method of manufacturing a pixel structure, the pixel structure including a base substrate; at least one first electrode arranged in an upper portion of the base substrate; at least one second electrode having a circular shape extending along a circumferential direction around the at least one first electrode; and a plurality of LED elements connected to the first and second electrodes.

First claim

What is claimed is:

1. A pixel structure, comprising:
a base substrate;
a first electrode of a plurality of first electrodes arranged in an upper portion of the base substrate, the first electrode having a circular shape;
a second electrode of a plurality of second electrodes entirely surrounding the first electrode in a plan view, and having a circular shape extending along a circumferential direction around the first electrode;
an electrode line connecting two of the plurality of the second electrodes to each other, and located at a same layer as the plurality of the second electrodes;
an insulating film between the base substrate and the first electrode and the second electrode;
a driving transistor electrically connected to the first electrode through a hole formed in the insulating film; and
a plurality of LED elements connected between the first electrode and the second electrode, and arranged to extend radially outward from the first electrode and to extend in different directions so that the plurality of LED elements have a radial arrangement,
wherein the first electrode and the second electrode are concentric.

2. The pixel structure as claimed in claim 1 , further comprising a power wiring electrically connected to the second electrode.

3. The pixel structure as claimed in claim 1 , wherein a separation distance between the first electrode and the second electrode is about 1 μm to about 7 μm.

4. The pixel structure as claimed in claim 1 , wherein the first electrode is closer to a center of a circle formed by the second electrode than the plurality of LED elements and the second electrode.

5. A display device, comprising:
the pixel structure as claimed in claim 1 ; and
a driving circuit connected to the pixel structure.

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Hyunmin
• Kim Daehyun
• Im Hyundeok
• Kang Jonghyuk
• Park Jaebyung
• Lee Jooyeol
• Cho Chio
• Hong Sungjin

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/819 Primary

  characterised by their shape, e.g. curved or truncated substrates · CPC title

• H10D30/60

  Insulated-gate field-effect transistors [IGFET] (H10D30/40 takes precedence) · CPC title

• H10H20/831

  characterised by their shape · CPC title

• H05B33/26 Primary

  characterised by the composition or arrangement of the conductive material used as an electrode · CPC title