Organic Electronic Compound for High Luminous Efficiency

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Solution Overview

Problem

Current organic electronic elements face challenges with low luminous efficiency, high driving voltage, and short lifetime due to issues like metal oxide penetration and Joule heat instability, necessitating the development of stable and efficient organic material layers.

Innovation Solution

A compound represented by Formula 1 is introduced, which forms the basis of an organic electronic element with improved luminous efficiency, low driving voltage, high heat resistance, and enhanced color purity and lifetime, used in various organic electronic devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional organic material layers are used, then the element can be manufactured with standard materials, but the luminous efficiency is low and driving voltage is high

Engineering Contradiction:

Improveluminous efficiencyVSAvoiddriving voltage

Core Design Contradiction:

ProductivityVSUse of energy by stationary object

Solution Approach 1:

The patent modifies the molecular structure of organic compounds by changing parameters such as introducing specific functional groups (carbazole, triphenamine, oxadiazole, pyridine, pyrimidine rings) and adjusting molecular weight and glass transition temperature to achieve optimal charge transport properties and reduce driving voltage while improving luminous efficiency

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite organic material layers combining multiple functional materials with complementary properties - hole transport materials, electron transport materials, and light emitting materials - to achieve synergistic effects that improve luminous efficiency while maintaining low driving voltage

Inventive Principle:

Principle #40Composite materials

2Duration of action of stationary object

If standard hole injection layer materials are used, then the manufacturing process is simple, but metal oxides penetrate from the anode into the organic layer shortening lifetime

Engineering Contradiction:

ImprovelifetimeVSAvoidmanufacturing complexity

Core Design Contradiction:

Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The patent introduces a specially designed hole injection layer with high glass transition temperature and specific molecular structure that acts as an intermediary barrier between the ITO anode and the organic layers, preventing metal oxide penetration while maintaining effective hole injection

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies materials with specifically tailored local properties - high thermal stability and barrier characteristics - to the hole injection layer, which is positioned at the critical interface where metal oxide penetration occurs, providing localized protection without complicating the overall manufacturing process

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If hole transport layer material with low glass transition temperature is used, then the material is easier to process, but the uniformity of thin film surface collapses during operation

Engineering Contradiction:

Improvethin film surface uniformityVSAvoidmaterial processing

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent systematically adjusts the glass transition temperature parameter of hole transport layer materials to an optimal range that provides sufficient thermal stability to maintain thin film surface uniformity during operation while remaining processable with standard deposition techniques

Inventive Principle:

Principle #35Parameter changes

4Reliability

If organic material layer materials are not fully optimized, then development time is reduced, but the element cannot fully exhibit excellent features

Engineering Contradiction:

Improveelement performanceVSAvoidmaterial development time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent establishes specific parameter ranges for organic material layer compounds including glass transition temperature, molecular weight, and functional group composition that reliably produce high-performance elements while streamlining the development process through targeted material design

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent designs self-assembling molecular structures with inherent stability features - such as rigid aromatic cores and specific intermolecular interactions - that automatically maintain thin film uniformity and prevent degradation during operation without requiring additional processing steps

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10763443B2Compound for organic electronic element, organic electronic element using the same, and electronic device thereof

Publication Date: 2020.09.01 DUK SAN NEOLUX

AI summary

The present invention provides a novel compound which is capable of improving light-emitting efficiency, stability and lifespan of an element, an organic electronic element using the same, and an electronic device thereof.