Organic Compound for Blue Light Emission with High Efficiency
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Solution Overview
Problem
Current organic EL displays lack materials with sufficient properties for practical use, particularly in terms of emission efficiency and color purity, which affects power consumption and display quality.
Innovation Solution
Development of an organic compound with a specific molecular structure, including a dibenzofurobisbenzofuran or dibenzothienobisbenzothiophene skeleton, and amino or aryl groups, enhancing emission quantum yield, molar absorption coefficient, and blue light emission with a sharp spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organic compounds are used in organic EL displays, then the device structure can be maintained, but the emission efficiency and color purity are insufficient
Solution Approach 1:
The patent modifies the molecular parameters of organic compounds by introducing specific structural features (dibenzofurobisbenzofuran and dibenzothienobisbenzothiophene skeletons with amino groups) to change the emission properties, quantum yield, and color characteristics of the materials, thereby resolving the insufficiency of conventional materials
Solution Approach 2:
The patent creates composite light-emitting materials by combining specific structural components (rigid fused ring skeletons with amino functional groups) to achieve synergistic effects that improve both emission efficiency and color purity beyond what single conventional materials can provide
2Adaptability or versatility
If the number of material options is increased for organic EL displays, then design flexibility improves, but material selection complexity increases
Solution Approach 1:
The patent develops organic compounds with multiple functional groups that can serve different purposes (emission, hole transport, stability) within a single molecular structure, reducing the need for multiple separate materials and simplifying the overall material system while maintaining design flexibility
3Use of energy by moving object
If emission efficiency is improved through material selection, then power consumption decreases, but material property requirements become more stringent
Solution Approach 1:
The patent optimizes molecular parameters including HOMO/LUMO energy levels, carrier mobility, and thermal stability of the organic compounds to achieve high emission efficiency that reduces power consumption while maintaining reliable material performance under operational conditions
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 organic compound provides a light-emitting material with high external quantum efficiency, favorable emission lifetime, and reduced dependence on dopant concentration, leading to improved display device performance and industrial productivity.
Implementation Method 1
a novel light-emitting material with a high emission quantum yield can be provided
Implementation Method 2
Display devices and light-emitting apparatuses including organic EL elements
Data Source
AI summary
A novel organic compound is provided. Alternatively, an organic compound that emits light with favorable chromaticity is provided. Alternatively, an organic compound that emits blue light with favorable chromaticity is provided. Alternatively, a light-emitting element with favorable emission efficiency is provided. Alternatively, an organic compound with an excellent carrier-transport property is provided. The organic compound includes any of a substituted or unsubstituted dibenzofurobisbenzofuran skeleton, a substituted or unsubstituted dibenzothienobisbenzothiophene skeleton, a substituted or unsubstituted benzobisbenzothienobenzofuran skeleton, and a substituted or unsubstituted dibenzothienobisbenzofuran skeleton and one or two amino groups. In the organic compound, the amino group includes a substituted or unsubstituted heteroaryl group and any of a substituted or unsubstituted aromatic hydrocarbon group having 6 to 25 carbon atoms and a substituted or unsubstituted heteroaryl group having 5 to 25 carbon atoms.