Nitrile-Bearing Compound for Low-Voltage, Long-Life OLED Devices

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

There is a continuous need for developing new materials for organic light emitting devices to improve efficiency and stability, particularly in terms of driving voltage and service life.

Innovation Solution

A compound represented by Chemical Formula 1, featuring N-containing cyclic groups linked to a benzene ring through linkers, is used in the organic material layer of the device, enhancing electron mobility and adjusting electron injection characteristics to achieve high efficiency and long service life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional organic materials are used in the organic material layer, then the device structure is simple, but the efficiency is low and service life is short

Engineering Contradiction:

Improveservice lifeVSAvoidmaterial structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs composite material strategy by combining the novel compound (Formula 1) with traditional organic materials (Formula 2) in the organic material layer. This composite approach leverages the superior electron mobility and stability of the new compound while maintaining compatibility with existing device architectures, thereby extending service life without excessive complexity

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies molecular parameters of organic materials by introducing specific N-containing cyclic groups (Formula A) with defined structural parameters (X1-X5 being N or CR, specific ring structures). These parameter changes in the molecular structure enhance electron mobility and device stability, directly improving service life while maintaining reasonable structural complexity

Inventive Principle:

Principle #35Parameter changes

2Productivity

If conventional organic materials are used, then the material selection is simple, but the electron mobility is low and efficiency is poor

Engineering Contradiction:

Improvedevice efficiencyVSAvoidcompound structure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies local quality principle by introducing specific functional groups (N-containing cyclic groups in Formula A) at critical positions within the organic material layer. These localized structural modifications enhance electron mobility in key regions of the material without requiring complete structural redesign, thus improving efficiency while controlling complexity

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent segments the organic material into distinct functional components: the core compound (Formula 1) providing electron transport functionality, and traditional materials (Formula 2) providing structural stability. This segmentation allows each component to optimize its specific function, improving overall device efficiency

Inventive Principle:

Principle #1Segmentation

3Power

If traditional materials are used in the organic material layer, then the driving voltage is high, but the material synthesis is simpler

Engineering Contradiction:

Improvedriving voltageVSAvoidmaterial synthesis ease

Core Design Contradiction:

PowerVSEase of manufacture

Solution Approach 1:

The patent uses traditional organic materials (Formula 2) as intermediary components that facilitate the integration of the novel compound (Formula 1) into existing device architectures. These intermediary materials bridge the gap between new high-performance compounds and conventional manufacturing processes, enabling reduced driving voltage without completely overhauling synthesis procedures

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The compound improves the efficiency and extends the service life of the organic light emitting device by reducing driving voltage and increasing electron mobility.

Implementation Method 1

enhancing electron mobility and adjusting electron injection characteristics

Methodology Applied

Scientific EffectElectron mobility enhancement:

Implementation Method 2

electrons are injected from the negative electrode into the organic material layer

Methodology Applied

Scientific EffectElectron injection:

Implementation Method 3

achieve low driving voltage

Methodology Applied

Scientific EffectElectrical conductivity adjustment:

Implementation Method 4

An organic light emitting phenomenon refers to a phenomenon in which electric energy is converted into light energy by using an organic material

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentEP4206195B1Nitrile bearing compound and organic light-emitting device comprising same

Publication Date: 2025.11.05 LG CHEM LTD

Figure 1~2
Figure 3~4

AI summary

The present specification relates to a compound represented by Chemical Formula 1 and an organic light emitting device including the same.