有机发光二极管以及包含其的器件

By introducing a specific structure of electron transport layer stacks into OLEDs, the shortcomings of single-emitting-layer top OLEDs in terms of efficiency and voltage are solved, achieving more efficient and lower-voltage OLED performance.

CN115362571BActive Publication Date: 2026-07-17NOVALED GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NOVALED GMBH
Filing Date
2021-06-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

There is room for improvement in efficiency and voltage of existing single-emitting-layer top-emitting organic light-emitting diodes (OLEDs).

Method used

A stacked structure comprising first and second electron transport layers is employed, wherein the first electron transport layer is composed of a compound of formula (I) and the second electron transport layer is composed of a compound of formula (II), both of which are free of electrodops and are optimized for electron injection and flow through specific substituent and dipole moment design.

Benefits of technology

This improved OLED efficiency, reduced driving voltage, enhanced electron injection balance, and improved device performance.

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Abstract

本发明涉及有机发光二极管，所述有机发光二极管包含阳极、阴极、第一发光层、第二发光层、第一电荷产生层和第一电子传输层叠层结构；并且涉及包含该有机发光二极管的显示器件或照明器件。
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