Benzene Core Compound for OLED Efficiency and Voltage

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Solution Overview

Problem

There is a continuous need for developing new materials for organic light emitting devices to improve efficiency, reduce driving voltage, and extend service life.

Innovation Solution

A compound with a benzene core bonded to a monocyclic hetero ring and including arylene groups as linking moieties, which adjusts electron mobility and increases polarity, is used in the organic material layer of the device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional organic materials are used in the organic material layer, then the device can operate, but the efficiency is insufficient and service life is limited

Engineering Contradiction:

Improveservice lifeVSAvoidefficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent modifies the molecular structure of organic materials by introducing specific functional groups and adjusting chemical parameters to create compounds with improved electron mobility and polarity, thereby enhancing both efficiency and service life simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent develops composite organic materials combining multiple functional moieties (benzene core, monocyclic hetero ring, arylene groups) to achieve synergistic effects that improve both device efficiency and reliability

Inventive Principle:

Principle #40Composite materials

2Power

If conventional organic materials are used, then the device structure is simple, but the driving voltage is high

Engineering Contradiction:

Improvedriving voltageVSAvoidmaterial structure complexity

Core Design Contradiction:

PowerVSDevice complexity

Solution Approach 1:

The patent optimizes electron mobility and polarity parameters through molecular structure modification, achieving lower driving voltage while maintaining reasonable material complexity

Inventive Principle:

Principle #35Parameter changes

3Productivity

If the organic material layer uses standard materials, then manufacturing is straightforward, but efficiency is low

Engineering Contradiction:

ImproveefficiencyVSAvoidmanufacturing simplicity

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The patent adjusts material parameters (electron mobility, polarity) through controlled molecular design, achieving higher efficiency while maintaining compatibility with standard manufacturing processes

Inventive Principle:

Principle #35Parameter changes

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 enhances the efficiency, reduces driving voltage, and extends the service life of the organic light emitting device by improving electron mobility and polarity.

Implementation Method 1

adjusts electron mobility and increases polarity

Methodology Applied

Scientific EffectElectron mobility adjustment: Conduction (electrical)

Implementation Method 2

adjusts electron mobility and increases polarity

Methodology Applied

Scientific EffectPolarity enhancement: Polarisation

Implementation Method 3

An organic light emission phenomenon generally refers to a phenomenon converting electrical energy to light energy using an organic material

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS20240341176A1Compound and organic light-emitting device comprising same

Publication Date: 2024.10.10 LG CHEM LTD

AI summary

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