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Organic light emitting diode and organic light emitting display device including the same

A technology of light-emitting diodes and organic light-emitting layers, which is applied in organic semiconductor devices, electric solid-state devices, semiconductor devices, etc., and can solve problems such as increased driving voltage and reduced lifetime of W-OLEDs

Active Publication Date: 2020-06-19
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the driving voltage of the W-OLED of the stacked structure increases, and the lifetime of the W-OLED of the stacked structure decreases

Method used

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  • Organic light emitting diode and organic light emitting display device including the same
  • Organic light emitting diode and organic light emitting display device including the same
  • Organic light emitting diode and organic light emitting display device including the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] (2) Embodiment 1 (Ex1)

[0106] Sequentially stack the first layer (HATCN), the second layer (WO 3 ) and a third layer (HATCN) to form a p-type CGL. (thickness ratio=1:1:1)

Embodiment 2

[0107] (3) Embodiment 2 (Ex2)

[0108] Sequentially stack the first layer (HATCN), the second layer (WO 3 ) and a third layer (HATCN) to form a p-type CGL. (thickness ratio=1:2:1)

Embodiment 3

[0109] (4) Embodiment 3 (Ex3)

[0110] Sequentially stack the first layer (HATCN), the second layer (WO 3 ) and a third layer (HATCN) to form a p-type CGL. (thickness ratio=1:4:1)

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PUM

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Abstract

The invention relates to an organic light emitting diode and an organic light emitting display device including the same. The organic light emitting diode includes a first electrode; a second electrode facing the first electrode; and an organic emitting layer between the first and second electrodes. The organic emitting layer includes a first emitting part between the first and second electrodes,a second emitting part between the first emitting part and the second electrode, and a charge generation layer between the first emitting part and the second emitting part. The charge generation layerincludes an n-type charge generation layer between the first emitting part and the second emitting part, and a p-type charge generation layer between the n-type charge generation layer and the secondemitting part. The p-type charge generation layer has a multi-layered structure, where an organic charge generation material layer and an inorganic charge generation material layer are alternately stacked.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2018-0159938 filed in Korea on December 12, 2018, which is incorporated herein by reference. technical field [0003] The present disclosure relates to an organic light emitting diode, and more particularly, to an organic light emitting diode (OLED) having high luminous efficiency and long lifetime, and an organic light emitting display device including the same. Background technique [0004] Recently, demand for flat panel display devices with a small footprint is increasing. Among flat panel display devices, technologies of organic light emitting display devices including OLEDs are rapidly developing. [0005] An organic light emitting diode emits light in such a way that electrons from a cathode serving as an electron injection electrode and holes from an anode serving as a hole injection electrode are injected into an organic light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L27/32
CPCH10K50/131H10K50/171H10K50/181H10K50/17H10K59/131H10K50/19H10K59/351H10K85/657H10K85/6574H10K50/13H10K50/12H10K50/11H10K85/654H10K85/6572H10K50/15H10K50/16H10K50/18H10K59/12H10K2101/40H10K2101/30H10K2102/00H10K2102/351H10K2102/3023H10K2102/3026
Inventor 徐辅民尹炅辰梁仲焕
Owner LG DISPLAY CO LTD