US 2022/0190274 A1Published application

Display panel

AssigneeSamsung Display Co., Ltd.

InventorsHYEONGPIL KIM, BYOUNG-HUN SUNG

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Abstract

A display panel includes an upper display substrate in which first to third pixel regions respectively configured to emit first to third light are defined, and a lower display substrate including first to third light-emitting elements respectively overlapping the first to third pixel regions. The first light-emitting element and the second light-emitting element each include one or more first stack parts and one or more first charge generation layers, each of the one or more first stack parts including a first emission layer configured to emit the second light. The third light-emitting element includes one or more second stack parts and one or more second charge generation layers, each of the one or more second stacking parts including a second emission layer configured to emit the third light. The first charge generation layer includes organic dopants, and the second charge generation layer includes inorganic dopants.

Claims20

Dependent claims

A display panel comprising:

an upper display substrate in which a first pixel region configured to emit first light, a second pixel region configured to emit second light different from the first light, and a third pixel region configured to emit third light different from each of the first light and the second light are defined;
and
a lower display substrate comprising a first light-emitting element overlapping the first pixel region, a second light-emitting element overlapping the second pixel region, and a third light-emitting element overlapping the third pixel region,
wherein the first light-emitting element and the second light-emitting element each comprises one or more first stack parts and one or more first charge generation layers, each of the one or more first stack parts comprising a first emission layer configured to emit the second light,
wherein the third light-emitting element comprises one or more second stack parts and one or more second charge generation layers, each of the one or more second stack parts comprising a second emission layer configured to emit the third light,
wherein the first charge generation layer comprises an organic dopant, and
wherein the second charge generation layer comprises an inorganic dopant.

4 more elements

A display panel comprising:

an upper display substrate in which a first pixel region, a second pixel region, and a third pixel region are defined and are arranged adjacent in a first direction;
and
a lower display substrate comprising a first light-emitting element overlapping the first pixel region, a second light-emitting element overlapping the second pixel region, a third light-emitting element overlapping the third pixel region, and a bank between the second light-emitting element and the third light-emitting element,
wherein the first light-emitting element and the second light-emitting element each comprise at least one first stack part, each of the at least one first stack part comprising a first emission layer configured to emit a second light,
the third light-emitting element comprises at least two second stack parts, each of the at least two second stack parts comprising a second emission layer configured to emit a third light different from the second light, and
the third light-emitting element does not comprise a first stack part comprising a first emission layer configured to emit the second light.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/448,162Filed 20 Sep 2021
Priority: KR 10-2020-017578415 Dec 2020
Published: 16 Jun 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H10K 59/32
Devices specially adapted for multicolour light emission: stacked devices having two or more layers, each emitting at different wavelengths
H10K 30/865
Constructional details: intermediate layers comprising a mixture of materials of the adjoining active layers
H10K 50/19
OLEDs or polymer light-emitting diodes [PLED]: tandem OLEDs
H10K 59/122
Active-matrix OLED [AMOLED] displays: pixel-defining structures or layers, e.g. banks