Unlock instant, AI-driven research and patent intelligence for your innovation.

Organic light emitting diode and organic light emitting device including same

A light-emitting diode and organic technology, applied in the direction of light-emitting materials, chemical instruments and methods, electric solid-state devices, etc., can solve the problems of inapplicability, short light-emitting life of metal complexes, etc.

Pending Publication Date: 2021-04-20
LG DISPLAY CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the luminescence lifetime of metal complexes as representative phosphorescent materials is too short to be applied in commercial devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic light emitting diode and organic light emitting device including same
  • Organic light emitting diode and organic light emitting device including same
  • Organic light emitting diode and organic light emitting device including same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0236] Embodiment 1 (Ex.1): Manufacturing OLED

[0237] An OLED was produced comprising introducing mCBP (LUMO-2.5eV; HOMO-6.0eV) as a host, Compound 1-1 in Chemical Formula 2 (LUMO-3.0eV; HOMO-5.7eV) as a delayed fluorescence material (DF) and Compound 2-1 (LUMO-3.6eV; HOMO-5.8eV) in Chemical Formula 4 as a fluorescent material (FD). The ITO substrate was cleaned by UV-ozone treatment before use, and then transferred to a vacuum chamber to deposit the emissive layer . Subsequently, at 10 -7 Under the condition of Torr vacuum, and set the deposition rate as The anode, emissive layer and cathode were deposited by evaporation from a heated boat in the following order:

[0238] Anode (ITO, 50nm); HIL (HAT-CN, 7nm); HTL (NPB, 78nm); EBL (TAPC, 15nm); EML (mCBP: Compound 1-1: Compound 2-1=64:35:1( weight ratio), 35nm); HBL (B3PYMPM, 10nm); ETL (TPBi, 25nm); EIL (LiF);

[0239] Then, a cover layer (CPL) is deposited on the cathode and the device is encapsulated with glass. A...

Embodiment 2

[0240] Embodiment 2 (Ex.2): Manufacturing OLED

[0241] OLEDs were fabricated using the same materials as in Example 1, except that Compound 1-2 (LUMO-3.1eV; HOMO-5.7eV) in Chemical Formula 2 was used instead of Compound 1-1 as a delayed fluorescence material in EML. LUMO FD –LUMO DF =-0.5eV; HOMO FD –HOMO DF = -0.1eV.

Embodiment 3

[0242] Embodiment 3 (Ex.3): manufacture OLED

[0243] OLEDs were fabricated using the same materials as in Example 1, except that Compound 1-17 (LUMO-3.1eV; HOMO-5.9eV) in Chemical Formula 2 was used instead of Compound 1-1 as a delayed fluorescence material in EML. LUMO FD –LUMO DF =-0.5eV; HOMO FD –HOMO DF = -0.1eV.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed herein are an organic light emitting diode (OLED) including at least one emission material layer (EML) disposed between two electrodes and including a triazine-based delayed fluorescent material and a boron methylene dipyrrole-based fluorescent material, and an organic light emitting device including the organic light emitting diode. The triazine-based delayed fluorescent material and the boron methylene dipyrrole-based fluorescent material may be included in the same EML or in an adjacently disposed EML. The OLED can reduce its driving voltage and improve its luminous efficiency by adjusting the energy levels of the delayed fluorescent material and the fluorescent material.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2019-0129775 filed in Korea on October 18, 2019 and No. 10-2020-0113952 filed in Korea on September 7, 2020, the entire contents of which are adopted This application is hereby incorporated by reference. technical field [0003] The present disclosure relates to an organic light emitting diode, and more particularly, to an organic light emitting diode having excellent light emitting characteristics and an organic light emitting device having the same. Background technique [0004] As display devices become larger, there is a need for flat panel display devices that occupy less space. Among flat panel display devices, display devices using organic light emitting diodes (OLEDs) have been in focus. [0005] In OLEDs, when charges are injected into the emissive material layer between the electron injection electrode (i.e., cathode) and the hole injec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L27/32H10K99/00
CPCH10K59/12H10K85/322H10K85/654H10K85/657H10K50/131H10K85/6572H10K50/11C09K11/06C09K2211/107C09K2211/1055
Inventor J·A·李金捘演洪太良白贞恩
Owner LG DISPLAY CO LTD