Multi-Resonance Organic Compounds for Display Panels
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Solution Overview
Problem
Current organic electroluminescent elements face challenges in achieving high luminescence efficiency, color purity, and service life to meet the demands of high color gamut display devices.
Innovation Solution
The development of an organic compound with a multi-resonance effect, characterized by elongating the distance between B and B atoms and/or introducing N atoms to break conjugation and weaken para-electronic coupling, is proposed. This compound is integrated into the organic layer of display panels to enhance their performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional organic materials are used in the organic layer, then the device structure is simple, but the luminescence efficiency and color purity are insufficient
Solution Approach 1:
The patent employs composite organic compounds containing both boron and nitrogen atoms within the same molecular structure. This composite approach combines the benefits of boron-based materials (narrow emission spectrum, high color purity) with nitrogen-based materials (high luminescence efficiency, stable triplet energy level), thereby simultaneously improving both luminescence efficiency and color purity while maintaining a relatively simple device structure
Solution Approach 2:
The patent systematically adjusts key molecular parameters including the distance between boron atoms, the introduction of nitrogen atoms to break conjugation, and the selection of electron-donating or electron-withdrawing groups. These parameter changes optimize the balance between luminescence efficiency and color purity by controlling HOMO-LUMO energy gaps, triplet energy levels, and emission spectra
2Device complexity
If conventional organic materials are used in the organic layer, then the material structure is simple, but the color purity is insufficient
Solution Approach 1:
The patent utilizes composite organic compounds containing both boron and nitrogen atoms within the same molecular structure. This composite approach combines the benefits of boron-based materials (narrow emission spectrum, high color purity) with nitrogen-based materials (high luminescence efficiency, stable triplet energy level), thereby simultaneously improving both luminescence efficiency and color purity while maintaining a relatively simple device structure
Solution Approach 2:
The patent introduces nitrogen atoms at specific local positions within the organic compound structure to break conjugation and weaken para-electronic coupling. This local modification approach allows precise control over electron distribution and energy levels, thereby improving color purity without requiring complete restructuring of the entire molecular framework
3Ease of manufacture
If conventional organic materials are used in the organic layer, then the device is easy to manufacture, but the service life is short
Solution Approach 1:
The patent systematically adjusts key molecular parameters including the distance between boron atoms, the introduction of nitrogen atoms to break conjugation, and the selection of electron-donating or electron-withdrawing groups. These parameter changes optimize the balance between luminescence efficiency and color purity by controlling HOMO-LUMO energy gaps, triplet energy levels, and emission spectra
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 organic compound with a multi-resonance effect improves the luminescence efficiency, color purity, and extends the service life of display panels, effectively addressing the limitations of existing materials.
Implementation Method 1
The organic substance in the organic layer is used to convert electrical energy into light energy, thereby realizing organic electroluminescence
Implementation Method 2
By providing the organic compound with a multi-resonance effect and elongating the distance between B and B atoms in the organic compound and/or introducing N atom(s) to break conjugation to weaken para-electronic coupling
Data Source
AI summary
Embodiments of the present disclosure provide an organic compound and a display panel. The organic compound has a structure represented by formula (1):M1 and M2 are independently selected from B or N; Y1 and Y2 are independently selected from C or N, and at least one of Y1 and Y2 is N; when M1 is B, X1 and X2 are independently selected from electron-donating groups; when M1 is N, X1 and X2 are independently selected from electron-withdrawing groups; when M2 is B, X3 and X4 are independently selected from electron-donating groups; and when M2 is N, X3 and X4 are independently selected from electron-withdrawing groups.