US 11,903,288 B2 · Organic light-emitting device

Abstract

An organic light-emitting device and display apparatus, the device including a first electrode; a second electrode facing the first electrode; an emission layer between the first and second electrode; a hole control layer between the first electrode and the emission layer; and an electron control layer between the emission layer and the second electrode, wherein the emission layer includes a plurality of sub-emission layers to emit light having different wavelengths, at least portions of the plurality of sub-emission layers do not overlap one another, the plurality of sub-emission layers include: a first sub-emission layer including a first color light-emitting dopant, and a second sub-emission layer including a second color light-emitting dopant, the first and second sub-emission layers each include a hole-transporting and electron-transporting host which form an exciplex, and a triplet energy of the exciplex is equal to or greater than triplet energies of the first and second color light-emitting dopant.

Claims15

Dependent claims

An organic light-emitting device, comprising:

a first electrode;
a hole control layer on the first electrode;
an emission layer on the hole control layer;
an electron control layer on the emission layer;
a second electrode on the electron control layer;
and
a capping layer on the second electrode,
wherein the emission layer comprises a first sub-emission layer, a second sub-emission layer, and a third sub-emission layer,
the first sub-emission layer comprises a first hole-transporting host, a first electron-transporting host, and a red light-emitting dopant,
the second sub-emission layer comprises a second hole-transporting host, a second electron-transporting host, and a green light-emitting dopant,
the third sub-emission layer comprises a third hole-transporting host, a third electron-transporting host, and a blue light-emitting dopant,
the red light-emitting dopant and green light-emitting dopant emit phosphorescent light, and
the blue light-emitting dopant emits thermally activated delayed fluorescence (TADF) light.

10 more elements

An organic light-emitting display apparatus, comprising:

a timing controller;
a scan driver;
a source driver;
and
an organic light-emitting display panel including an organic light-emitting device,
wherein the organic light-emitting device comprises:
a first electrode;
a hole control layer on the first electrode;
an emission layer on the hole control layer;
an electron control layer on the emission layer;
and
a second electrode on the electron control layer,
the emission layer comprises a first sub-emission layer, a second sub-emission layer, and a third sub-emission layer,
the first sub-emission layer comprises a first hole-transporting host, a first electron-transporting host, and a red light-emitting dopant,
the second sub-emission layer comprises a second hole-transporting host, a second electron-transporting host, and a green light-emitting dopant,
the third sub-emission layer comprises a third hole-transporting host, a third electron-transporting host, and a blue light-emitting dopant,
the red light-emitting dopant and green light-emitting dopant emit phosphorescent light, and
the blue light-emitting dopant emits phosphorescent light and thermally activated delayed fluorescence (TADF) light.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/154,471Filed 13 Jan 2023 · continuation

Priority

KR 10-2015-015045328 Oct 2015

Published

US 2023/0157114 A118 May 2023

Granted

13 Feb 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification17 codes

H10K 59/35
Devices specially adapted for multicolour light emission: comprising red-green-blue [RGB] subpixels
H10K 50/11
OLEDs or polymer light-emitting diodes [PLED]: characterised by the electroluminescent [EL] layers
H10K 50/125
Characterised by the electroluminescent [EL] layers: specially adapted for multicolour light emission, e.g. for emitting white light
H10K 50/15
Carrier transporting layers: hole transporting layers

Family

Application15/141,910Parent of this continuation · filed 29 Apr 2016

Application15/870,389Parent of this continuation · filed 12 Jan 2018

US 9,905,616 B2Parent of this continuation · filed 27 Feb 2018

Application16/432,375Parent of this continuation · filed 5 Jun 2019

US 10,325,960 B2Parent of this continuation · filed 18 Jun 2019

Application16/852,875Parent of this continuation · filed 20 Apr 2020

US 10,658,432 B2Parent of this continuation · filed 19 May 2020

Application17/201,737Parent of this continuation · filed 15 Mar 2021

US 10,971,554 B2Parent of this continuation · filed 6 Apr 2021

US 2023/0157114 A1Pre-grant publication · published 18 May 2023

US 11,581,371 B2Parent of this continuation

US 2017/0125487 A1Published application

US 2018/0138249 A1Published application

US 2019/0288042 A1Published application

US 2020/0251533 A1Published application

US 2021/0202597 A1Published application

US 11,903,288 B2This patent

From the US filing history. Foreign family members aren’t listed.

Organic light-emitting device

Life of this patent

Organic light-emitting device

Life of this patent

Abstract

Claims15