US 12,751,119 B2Granted

Display device and method of fabricating the same

AssigneeSamsung Display Co., Ltd.

InventorsSung Kook Park, Min Woo Kim, Sung Eun Baek, Jin Woo Choi, Hae Yun Choi

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Abstract

A display device and a method of fabricating the same is provided. A display device includes first and second pixel circuit units spaced apart from each other, a first pixel electrode on the first pixel circuit unit, a second pixel electrode on the second pixel circuit unit, a first light-emitting element electrically connected to the first pixel electrode, and for emitting first light, a second light-emitting element electrically connected to the second pixel electrode, and for emitting second light, a first pixel connecting electrode between the first pixel electrode and the first light-emitting element, and a second pixel connecting electrode between the second pixel electrode and the second light-emitting element, wherein the first pixel electrode overlaps with the first light-emitting element, and wherein the second pixel electrode does not overlap with the second light-emitting element.

Claims19

Dependent claims

A display device comprising:

a first pixel circuit unit and a second pixel circuit unit spaced apart from each other;
a first pixel electrode on the first pixel circuit unit;
a second pixel electrode on the second pixel circuit unit;
a first single light-emitting element electrically connected to the first pixel electrode, and for emitting first light;
a second single light-emitting element electrically connected to the second pixel electrode, and for emitting second light;
a first pixel connecting electrode between the first pixel electrode and the first light-emitting element;
a second pixel connecting electrode between the second pixel electrode and the second light-emitting element;
a common connecting electrode configured to receive a common voltage;
a partition wall on the common connecting electrode, and at least partially defining a first emission area in which the first light-emitting element is located, and a second emission area in which the second light-emitting element is located;
and
a connecting metal layer between the partition wall and the common connecting electrode,
wherein the first pixel electrode overlaps with the first light-emitting element,
wherein the second pixel electrode does not overlap with the second light-emitting element,
wherein the first pixel connecting electrode and the second pixel connecting electrode are in contact with an upper surface of a first insulating film, and
wherein the first pixel connecting electrode is connected to the first pixel electrode via a first contact hole penetrating the first insulating film.

12 more elements

A display device comprising:

a first pixel circuit unit and a second pixel circuit unit spaced apart from each other;
a first pixel electrode on the first pixel circuit unit;
a second pixel electrode on the second pixel circuit unit;
a first single light-emitting element electrically connected to the first pixel electrode, overlapping the first pixel electrode, and configured to emit first light;
a second single light-emitting element electrically connected to the second pixel electrode, not overlapping the second pixel electrode, and configured to emit second light;
a first pixel connecting electrode between the first pixel electrode and the first light-emitting element;
a second pixel connecting electrode between the second pixel electrode and the second light-emitting element, and comprising:
a first sub-pixel connecting electrode in a first contact hole penetrating a first insulating film, having a portion not overlapping with the second light-emitting element, and connected to the second pixel electrode;
and
a second sub-pixel connecting electrode on the first sub-pixel connecting electrode, in a second contact hole penetrating a second insulating film on the first insulating film, and having a portion overlapping with the second light-emitting element;
and
a step compensation layer on the second insulating film, and comprising a same material as the second sub-pixel connecting electrode.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/661,885Filed 3 May 2022
Priority: KR 10-2021-010568510 Aug 2021
Published: US 2023/0051074 A116 Feb 2023
Granted: 29 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H10H 20/857
Packages: interconnections, e.g. lead-frames, bond wires or solder balls
H10H 20/01
Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]: manufacture or treatment
H10H 20/8316
Characterised by their shape: multi-layer electrodes comprising at least one discontinuous layer
H10H 29/142
Comprising multiple light-emitting semiconductor components: two-dimensional arrangements, e.g. asymmetric LED layout