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Organic light emitting diode and organic light emitting device including same

A light-emitting diode and organic technology, applied in the direction of diodes, light-emitting materials, chemical instruments and methods, etc., can solve the problems that OLEDs cannot provide luminous efficiency and lifespan, and the luminous efficiency and lifespan limitations of organic light-emitting display devices, etc.

Pending Publication Date: 2022-06-03
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, OLEDs in blue pixels cannot provide sufficient luminous efficiency and lifetime, making organic light-emitting display devices limited in terms of luminous efficiency and lifetime.

Method used

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  • 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

[0363] (1) Example 1 (Ex1)

[0364] Compound hosts 1-5 were used as hosts in the first blue EML, and compound hosts 1-1 were used as hosts in the second blue EML.

Embodiment 2

[0365] (2) Example 2 (Ex2)

[0366] Compound hosts 1-5 were used as hosts in the first blue EML, and compound hosts 1-3 were used as hosts in the second blue EML.

Embodiment 3

[0367] (3) Example 3 (Ex3)

[0368] Compound hosts 1-5 were used as hosts in the first blue EML, and compound hosts 1-4 were used as hosts in the second blue EML.

[0369] The characteristics of the OLEDs fabricated in Comparative Examples 1 to 8 and Examples 1 to 3 were measured using a current source (KEITJLE) and a photometer (PR-650), that is, voltage (V), efficiency (Cd / A), lifetime (T95 ) and color coordinates (CIE) are listed in Table 1 side by side.

[0370] Table 1

[0371] V cd / A T95 [hours] CIEx CIEy Ref1 12.68 4.36 204 0.26 0.269 Ref2 12.88 4.14 282 0.26 0.269 Ref3 12.93 4.22 308 0.26 0.269 Ref4 12.08 4.51 388 0.26 0.269 Ref5 11.98 4.56 389 0.26 0.269 Ref6 13.13 4.12 406 0.26 0.269 Ref7 12.93 4.14 392 0.26 0.269 Ref8 12.93 4.15 392 0.26 0.269 Ex1 12.93 4.32 296 0.26 0.269 Ex2 12.08 4.48 398 0.26 0.269 Ex3 11.98 4.53 404 0.26 0.269

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PUM

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Abstract

The present disclosure relates to an organic light emitting diode and an organic light emitting device. The organic light emitting device includes a substrate; and an organic light emitting diode positioned on the substrate and including a first electrode; a second electrode facing the first electrode; a first light emitting material layer including a first compound and positioned between the first electrode and the second electrode; and a second light emitting material layer including a second compound and positioned between the first light emitting material layer and the second electrode, in which the first compound and the second compound are each an anthracene derivative, and a deuteration rate of the first compound is greater than a deuteration rate of the second compound.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the benefit of Korean Patent Application No. 10-2020-0165606, filed in the Republic of Korea on December 1, 2020, which is incorporated herein by reference in its entirety. technical field [0003] The present disclosure relates to organic light emitting devices, and more particularly, to organic light emitting diodes (OLEDs) having improved luminous efficiency and lifetime, and organic light emitting devices including the same. Background technique [0004] As the demand for flat panel display devices with a small footprint increases, organic light emitting display devices including OLEDs have been the subject of recent research and development. [0005] OLEDs combine electrons with holes to generate excitons by injecting electrons from the cathode as an electron injection electrode and holes from the anode as a hole injection electrode into an emitting material layer (EML). The excitons are co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L27/32
CPCH10K59/12H10K85/615H10K85/636H10K85/633H10K85/6576H10K85/657H10K85/6574H10K50/131H10K50/13H10K85/658C09K11/06H10K59/32H10K59/38H10K85/626H10K50/11H10K50/19H10K59/35C09K2211/1011C09K2211/1018C09K2211/1007H10K85/322
Inventor 庾荣埈金相范崔贤哲宋寅范金度汉徐正大金怠植
Owner LG DISPLAY CO LTD