Photocurable Silicon Ink Composition for Low-k OLED Packaging
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Solution Overview
Problem
Existing organic light-emitting diode (OLED) package materials face issues with high dielectric constants and ink-jet printing blockages, which affect the stability and reliability of OLED devices.
Innovation Solution
An ink composition comprising a photocurable silicon-containing monomer component, an active diluent component, and a photoinitiator component, utilizing a fluorine-substituted silicon-containing monomer to form a free radical curing system that reduces dielectric constant and prevents ink hole blockage during printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluorine-containing monomer is used to reduce dielectric constant, then dielectric constant is reduced, but ink hole blockage occurs during printing
Solution Approach 1:
The patent changes the chemical structure parameters of the fluorine-containing monomer by introducing specific substituents (R1-R6 groups) and controlling the degree of fluorine substitution. This allows optimization of both dielectric constant and printing performance, resolving the contradiction between low dielectric constant and ink hole blockage prevention.
Solution Approach 2:
The patent uses composite material design by combining fluorine-containing monomers with specific substituents in a coordinated manner. The composite structure of the monomer molecule allows simultaneous achievement of low dielectric constant and resistance to ink hole blockage during printing processes.
2Length of moving object
If thin film package thickness is reduced to 1 micron, then device miniaturization is achieved, but planarization and gap filling functions are insufficient
Solution Approach 1:
The patent designs the ink composition to perform multiple functions simultaneously: planarization, gap filling, and electrical insulation. By incorporating specific functional groups and adjusting the chemical composition, the thin film achieves multiple required functions despite the reduced thickness of 1 micron.
Solution Approach 2:
The patent adjusts the chemical composition parameters of the ink material to optimize its physical properties for thin film applications. By controlling molecular weight, functional group concentration, and other parameters, the material achieves adequate planarization and gap filling functions even at 1 micron thickness.
3Manufacturing precision
If ink-jet printing precision is increased for thin layers, then layer thickness control is improved, but printing process complexity increases
Solution Approach 1:
The patent modifies the rheological parameters and chemical composition of the ink material to make it more suitable for ink-jet printing. By adjusting viscosity, surface tension, and other physical parameters, the printing process becomes less complex while maintaining precise layer thickness control at the 1 micron level.
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 ink composition achieves a low dielectric constant, improves curing speed, and prevents ink hole blockage, enhancing the stability and reliability of OLED devices by forming a high-quality organic layer.
Implementation Method 1
an ink composition, which comprises: a photocurable silicon-containing monomer component, an active diluent component, and a photoinitiator component
Implementation Method 2
utilizing a fluorine-substituted silicon-containing monomer to form a free radical curing system that reduces dielectric constant
Data Source
AI summary
Provided are an ink composition, a package structure, and a semiconductor device. The ink composition includes: a photocurable silicon-containing monomer component, an active diluent component, and a photoinitiator component, wherein the photocurable silicon-containing monomer component comprises any one or more compounds having the following structural formula (I).