Organic Compound for Lowering Driving Voltage in OLEDs

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Solution Overview

Problem

Existing organic electroluminescent elements face challenges in maximizing efficiency and lifespan due to suboptimal energy levels, T1 values, and material properties in the organic material layer.

Innovation Solution

A compound represented by a specific formula is introduced to form an organic electric element, which includes a light-emitting auxiliary layer. This compound helps lower the driving voltage, enhance luminous efficiency, and extend the lifetime of the organic electric element.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the organic material layer is simply improved, then efficiency can be increased, but long life span and high efficiency cannot be simultaneously achieved due to suboptimal energy levels and T1 values

Engineering Contradiction:

Improveluminous efficiencyVSAvoidlife span

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies parameter changes by systematically adjusting energy levels, T1 values, and material properties of the organic compound to achieve optimal combination that simultaneously improves both efficiency and life span

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by combining the newly developed compound with other materials in the organic material layer to create a multi-layered structure with optimized properties for both efficiency and stability

Inventive Principle:

Principle #40Composite materials

2Productivity

If efficiency is increased, then driving voltage is lowered, but crystallization of organic material due to Joule heating may occur

Engineering Contradiction:

Improveluminous efficiencyVSAvoidcrystallization resistance

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The patent changes material parameters (energy levels, T1 values) to reduce Joule heating during operation, thereby preventing crystallization while maintaining high efficiency

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 use of the compound in the organic electric element results in improved luminous efficiency and extended lifespan, while also reducing the driving voltage, thus addressing the limitations of existing technologies.

Implementation Method 1

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

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 2

the crystallization of an organic material due to Joule heating generated during operation is reduced as driving voltage is lowered

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS20250057038A1Compound for organic electric element, organic electric element using the same, and an electronic device thereof

Publication Date: 2025.02.13 DUK SAN NEOLUX

AI summary

Provided are a compound represented by Formula 1, an organic electric element comprising a first electrode, a second electrode, and an organic material layer between the first electrode and the second electrode, and an electronic device thereof, where the compound represented by Formula 1 is included in the organic material layer and thereby the driving voltage of the organic electric element can be lowered, and the luminous efficiency and life time can be improved.