Condensed Cyclic Compound for Bright, Fast Light-Emitting Devices
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Solution Overview
Problem
Existing light-emitting devices face challenges in achieving optimal performance in terms of luminance, driving voltage, and response speed while maintaining high contrast ratios and wide viewing angles.
Innovation Solution
Incorporation of a condensed cyclic compound represented by Formula 1 into the interlayer of a light-emitting device, which includes a first electrode, a second electrode, and an emission layer, with optional hole and electron transport regions, to enhance carrier recombination and light emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light-emitting devices are used, then basic light emission is achieved, but luminance, driving voltage, and response speed cannot be optimized simultaneously
Solution Approach 1:
The patent introduces a condensed cyclic compound with a specific molecular structure (Formula 1) containing a 9-membered ring with particular substituents. This chemical parameter change in the emission layer material optimizes carrier recombination efficiency, leading to improved luminance, reduced driving voltage, and enhanced response speed without requiring complex device structural modifications.
2Illumination intensity
If carrier recombination efficiency is increased to improve luminance, then driving voltage may increase due to higher energy consumption
Solution Approach 1:
The patent employs a composite molecular structure in the condensed cyclic compound (Formula 1) that combines specific functional groups and substituents. This composite material design enables efficient carrier recombination while maintaining optimal energy levels, achieving high luminance with reduced driving voltage requirements.
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 condensed cyclic compound improves luminance, reduces driving voltage, and increases response speed, thereby enhancing the overall performance of the light-emitting device.
Implementation Method 1
Carriers, such as holes and electrons, recombine in the emission layer to produce excitons. The excitons may transition from an excited state to a ground state, thereby generating light.
Data Source
AI summary
Embodiments provide a condensed cyclic compound, a light-emitting device including the condensed cyclic compound, an electronic apparatus including the light-emitting device, and an electronic equipment including the light-emitting device. The light-emitting device includes a first electrode, a second electrode facing the first electrode, an interlayer between the first electrode and the second electrode and including an emission layer, and the condensed cyclic compound. The condensed cyclic compound is represented by Formula 1, which is explained in the specification: