Organic Semiconductor Compound for Flexible Display Processing
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Solution Overview
Problem
Conventional amorphous silicon thin film transistors face challenges in high-temperature processing, making it difficult to apply them to flexible polymer substrates for flexible display technology, and organic thin film transistors with low molecular organic semiconductor materials have limitations in charge mobility and processability.
Innovation Solution
Development of an organic electronic device using an organic semiconductor compound with a low bandgap and high charge mobility, capable of being processed via a solution method, incorporating specific chemical structures that enhance intermolecular stacking and solubility, allowing for deposition at room temperature and forming a thin film with improved electrical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional amorphous silicon thin film transistor is used, then uniformity and electrical characteristics are improved, but high-temperature processing requirement makes it difficult to apply to flexible polymer substrates
Solution Approach 1:
The patent changes the material composition from conventional amorphous silicon to an organic semiconductor compound with specific chemical structure (Formula 1), which fundamentally alters the processing temperature parameter from 300°C to room temperature, enabling flexible substrate compatibility while maintaining transistor functionality
Solution Approach 2:
The patent uses a composite molecular structure combining benzo[1,2-b:4,5-b′]dithiophene core with thiazole groups and alkyl/alkoxy substituents, creating an organic semiconductor material that achieves both solution processability and high charge mobility, resolving the contradiction between processing temperature and electrical performance
2Ease of manufacture
If low molecular organic semiconductor material is used in organic thin film transistor, then solution processing is enabled, but charge mobility is limited
Solution Approach 1:
The patent designs a composite molecular structure with conjugated benzo[1,2-b:4,5-b′]dithiophene-thiazole core and appropriate side chains, achieving both solution processability and high charge mobility through optimized intermolecular stacking and molecular packing
Solution Approach 2:
The patent introduces specific functional groups (thiazole, alkyl, alkoxy) at different positions of the molecular structure to locally optimize properties: thiazole groups enhance charge transport, while alkyl/alkoxy chains improve solubility, achieving both solution processability and high charge mobility simultaneously
Data Source
AI summary
An organic electronic device may include an organic semiconductor compound represented by the following Chemical Formula 1 or Chemical Formula 2.Each substituent of the above Chemical Formulas 1 and 2 may be the same as described in the detailed description.