Fused Polycyclic Compound Light Emitting Element Efficiency Lifespan
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Solution Overview
Problem
Existing light emitting elements for display devices face challenges in achieving improved light emission efficiency and lifespan, which are crucial for advanced image display technologies.
Innovation Solution
A light emitting element is developed, incorporating a fused polycyclic compound represented by Formula 1, which is integrated into the light emitting layer between the first and second electrodes. This compound enhances the light emission efficiency and lifespan of the light emitting element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional light emitting materials are used, then device structure can be maintained, but light emission efficiency and lifespan are insufficient
Solution Approach 1:
The patent changes the chemical structure parameters of the light emitting material by introducing a specific fused polycyclic compound with formula (1), where m1-m5 are integers defining the molecular structure. This structural parameter change leads to improved light emission efficiency and extended lifespan of the light emitting element
Solution Approach 2:
The patent uses a composite material approach by combining the fused polycyclic compound (formula 1) with other compounds (formulae 2-4) in the light emitting layer. This composite material system achieves both improved light emission efficiency and extended lifespan that neither material could achieve alone
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 fused polycyclic compound in the light emitting element leads to improved light emission efficiency and extended lifespan, contributing to better performance and reliability in display devices.
Implementation Method 1
an organic electroluminescence display device which is a display device including a self-luminescence light emitting element which realizes display of images by recombining, in a light emitting layer, holes and electrons separately injected from a first electrode and a second electrode to emit light generated from a light emitting material
Data Source
AI summary
A light emitting element includes a first electrode, a second electrode on the first electrode, and a light emitting layer between the first electrode and the second electrode and including a first compound represented by Formula 1.