Organic Electronic Compound for High Efficiency and Stability

Solution Overview

Problem

Existing organic electronic elements face challenges in achieving high luminous efficiency, stability, and lifespan due to issues like metal oxide penetration, Joule heating, and limited heat resistance, particularly in large-area displays with increasing power consumption.

Innovation Solution

A novel compound is introduced, represented by specific formulas, which is used in a composition for organic electronic elements. This composition, when applied, enhances the luminous efficiency, reduces driving voltage, and improves heat resistance, thereby extending the color purity and lifespan of the elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional organic material layer is used, then the device can be manufactured with existing materials, but the luminous efficiency is low and color purity deteriorates due to molecular interactions shifting the maximum light-emitting wavelength to longer wavelengths

Engineering Contradiction:

Improveluminous efficiencyVSAvoidcolor purity

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent employs a host/dopant composite material system where a dopant material with a smaller energy band gap than the host is mixed into the emitting layer. This composite structure enables efficient energy transfer from host to dopant, achieving high luminous efficiency while maintaining color purity through the dopant's specific emission characteristics

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent optimizes the energy level parameters and T1 values between different organic material layers, and adjusts the intrinsic properties (mobility, interfacial properties) of materials to achieve optimal performance. By carefully controlling these parameters, the system achieves both high efficiency and long lifespan simultaneously

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the efficiency is increased, then the luminous output improves, but the driving voltage increases and Joule heating increases, causing crystallization of organic substances and reducing lifespan

Engineering Contradiction:

Improveluminous efficiencyVSAvoidlifespan

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent optimizes the energy level parameters and T1 values between different organic material layers, and adjusts the intrinsic properties (mobility, interfacial properties) of materials to achieve optimal performance. By carefully controlling these parameters, the system achieves both high efficiency and long lifespan simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces a buffer layer between the anode electrode and the organic layer to delay and reduce the penetration and diffusion of metal oxide into the organic layer, thereby protecting the organic materials from degradation and extending device lifespan

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the driving voltage is decreased to extend lifespan, then the crystallization due to Joule heating is reduced, but the luminous efficiency cannot be maximized without optimal material combination

Engineering Contradiction:

ImprovelifespanVSAvoidluminous efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent optimizes the energy level parameters and T1 values between different organic material layers, and adjusts the intrinsic properties (mobility, interfacial properties) of materials to achieve optimal performance. By carefully controlling these parameters, the system achieves both high efficiency and long lifespan simultaneously

Inventive Principle:

Principle #35Parameter changes

4Device complexity

If a single light emitting material is used, then the device structure is simple, but the maximum light-emitting wavelength shifts to longer wavelengths due to molecular interactions, decreasing color purity and efficiency

Engineering Contradiction:

Improvematerial layer structureVSAvoidcolor purity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent employs a host/dopant composite material system where a dopant material with a smaller energy band gap than the host is mixed into the emitting layer. This composite structure enables efficient energy transfer from host to dopant, achieving high luminous efficiency while maintaining color purity through the dopant's specific emission characteristics

Inventive Principle:

Principle #40Composite materials

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 novel compound composition results in high luminous efficiency, low driving voltage, and improved heat resistance, leading to enhanced color purity and extended lifespan of organic electronic elements.

Implementation Method 1

organic light emitting phenomenon refers to a phenomenon that converts electric energy into light energy by using an organic material

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 2

a host/dopant system can be used as a light-emitting material to increase color purity and light-emitting efficiency through energy transfer. The principle is that when a small amount of a dopant having a smaller energy band gap than that of the host forming the emitting layer is mixed in the emitting layer, excitons generated in the emitting layer are transported to the dopant to emit light with high efficiency

Methodology Applied

Scientific EffectEnergy transfer:

Implementation Method 3

the crystallization of organic substances due to Joule heating generated during operation decreases

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS20250185504A1Compound for organic electronic element, organic electronic element using the same, and an electronic device thereof

Publication Date: 2025.06.05 DUK SAN NEOLUX

AI summary

Provided are a compound of P-5 to P-100 that can improve the luminous efficiency, stability, and lifespan of the organic electronic element employing the compound, an organic electronic element using the same, and an electronic device thereof.