Triptycene Materials for OLED Hole Transport Layers

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing organic electroluminescent devices (OLEDs) face challenges in improving performance data such as lifetime, efficiency, and operating voltage.

Innovation Solution

The use of specific triptycenes as materials for hole transport layers or electron transport layers in OLEDs, which enhance the devices' performance by providing good properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional organic semiconductors are used in OLEDs, then the devices can be manufactured with current materials, but the lifetime, efficiency and operating voltage performance are insufficient

Engineering Contradiction:

Improvedevice lifetimeVSAvoidmanufacturing with conventional materials

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent changes the chemical structure parameters of the organic semiconductor materials by introducing specific triptycene core structures with varying substituent patterns (formulae 1 and 2), which optimizes the balance between device performance and manufacturability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention uses composite material design by combining triptycene core structures with various aromatic and heteroaromatic substituents (Ar1, Ar2, Ar3 groups) to create materials that achieve both improved performance and manufacturability

Inventive Principle:

Principle #40Composite materials

2Productivity

If conventional organic semiconductors are used in OLEDs, then the devices can be manufactured, but the efficiency is insufficient

Engineering Contradiction:

Improvedevice efficiencyVSAvoidmanufacturing capability

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The patent modifies material parameters by introducing triptycene core structures with specific substituent configurations (formulae 1 and 2) that enhance charge transport efficiency while maintaining compatibility with existing manufacturing processes

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention applies local quality optimization by placing electron-withdrawing or electron-donating groups at specific positions on the triptycene core (different Ar1, Ar2, Ar3 combinations) to locally enhance charge transport properties in hole transport or electron transport layers

Inventive Principle:

Principle #3Local quality

3Power

If conventional organic semiconductors are used in OLEDs, then the devices can be manufactured, but the operating voltage is too high

Engineering Contradiction:

Improveoperating voltageVSAvoidmanufacturing feasibility

Core Design Contradiction:

PowerVSEase of manufacture

Solution Approach 1:

The patent changes material electrical parameters by introducing triptycene structures with specific substituent patterns that modify HOMO-LUMO energy levels and charge transport characteristics, enabling lower operating voltages while maintaining manufacturability

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250160204A1Materials for electronic devices

Publication Date: 2025.05.15 MERCK PATENT GMBH

AI summary

The present invention relates to compounds that are suitable for use in electronic devices, and to electronic devices, more particularly organic electroluminescent devices, containing these compounds.