Optimized Ink Composition for Uniform Organic Layers
Here’s PatSnap Eureka !
Summary
Problems
Existing ink compositions for electronic devices with organic functional layers face challenges in achieving homogeneity and device performance due to issues with molecular weight and solvent properties, leading to suboptimal printing and layer uniformity.
Innovation solutions
A novel ink composition comprising an organic functional material with a molecular weight of at most 5,000 g/mol and a first organic solvent with a boiling point between 200° C. and 320° C., selected from terpenes, terpenoids, or their combinations, which improves homogeneity and device performance.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If conventional ink compositions with higher molecular weight organic functional materials are used, then the ink composition has sufficient stability and solubility, but the homogeneity of the ink layer on the substrate deteriorates
Why choose this principle:
The patent changes the molecular weight parameter of the organic functional material from conventional higher values to specifically 5,000 g/mol or less. This parameter change resolves the contradiction by enabling both sufficient stability/solubility and improved homogeneity in the printed ink layer, as the lower molecular weight facilitates better distribution and uniformity while maintaining adequate solubility in the solvent system.
Principle concept:
If conventional solvents with lower boiling points are used, then the drying process is faster and more efficient, but the homogeneity and quality of the organic functional layer deteriorates
Why choose this principle:
The patent changes the boiling point parameter of the solvent to a specific range (200-320°C) that balances drying efficiency with layer quality. This intermediate boiling point range allows for controlled evaporation that maintains homogeneity while achieving reasonable drying speeds, resolving the contradiction between productivity and manufacturing precision.
Application Domain
Data Source
AI summary:
A novel ink composition comprising an organic functional material with a molecular weight of at most 5,000 g/mol and a first organic solvent with a boiling point between 200° C. and 320° C., selected from terpenes, terpenoids, or their combinations, which improves homogeneity and device performance.
Abstract
The present invention relates to an ink composition comprising an organic functional material having a molecular weight of at most 5,000 g/mol and a first organic solvent selected from the group consisting of terpene, terpenoid, and combination of any of these, as well as to the use of the ink composition, an electronic device prepared by using the ink composition and method for preparing/fabricating thereof.