Dielectric Paste Composition Using Halogenated Hydrocarbon Binder
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Solution Overview
Problem
Existing methods for forming high-K dielectric layers face challenges in achieving a high dielectric constant while maintaining processability and forming thin, uniform films, as high concentrations of inorganic dielectric particles increase viscosity and lead to thick layers, and indirect improvements in dielectric constant through additives have limitations.
Innovation Solution
A dielectric paste composition comprising inorganic dielectric particles, a binder, and a halogenated hydrocarbon, which is applied to a substrate and dried at a temperature of 60 to 200°C without a sintering process, enhancing the dielectric constant and flexibility of the resulting layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the concentration of inorganic dielectric particles in the dielectric paste composition is increased to increase the dielectric constant, then the dielectric constant is improved, but the viscosity is increased and it becomes difficult to apply the composition using printing or coating processes
Solution Approach 1:
The patent uses a composite binder system comprising both a polymer binder and a glass binder in specific weight ratios (polymer: 10-40 wt%, glass: 60-90 wt%). This composite binder composition enables the paste to maintain appropriate viscosity for coating processes while achieving a high dielectric constant of 80 or more, resolving the contradiction between processability and dielectric performance.
Solution Approach 2:
The patent optimizes the weight ratio parameters of the binder components (polymer to glass ratio between 0.11-0.90) and the inorganic dielectric particle content (40-80 wt%) to achieve the desired balance between viscosity and dielectric constant. By carefully controlling these compositional parameters, the paste achieves both manufacturability and high dielectric performance.
2Reliability
If the concentration of inorganic dielectric particles is increased to increase the dielectric constant, then the dielectric constant is improved, but the dielectric layer becomes excessively thick
Solution Approach 1:
The composite binder system (polymer + glass in optimized ratios) enables high particle loading (40-80 wt% inorganic dielectric particles) while maintaining paste flowability. This allows formation of thin dielectric layers with thickness of 1 µm or more while achieving dielectric constants of 80 or more, preventing excessive thickness.
Solution Approach 2:
By optimizing the binder composition parameters (polymer content: 10-40 wt%, glass content: 60-90 wt%) and particle concentration, the patent achieves high dielectric constant in thin layers without requiring excessive particle concentration that would lead to thick film formation.
3Ease of manufacture
If additives such as dispersants, antifoaming agents, leveling agents, and antioxidants are used to improve dispersion and coating properties, then the dispersibility and coating properties are improved, but the dielectric constant is only indirectly increased with limited improvement
Solution Approach 1:
The patent replaces traditional additives with a composite binder system comprising polymer and glass binders in specific ratios. This binder composition directly provides both excellent dispersibility and coating properties while achieving high dielectric constant of 80 or more, eliminating the need for multiple additives and directly improving dielectric performance rather than indirectly through dispersion improvement.
Solution Approach 2:
The patent extracts and eliminates the need for multiple separate additives (dispersants, antifoaming agents, leveling agents, antioxidants) by incorporating their functions into the composite binder system. The glass binder component particularly contributes to dispersibility and coating properties while the polymer binder provides film-forming capability, achieving both manufacturability and high dielectric constant without relying on additive-based indirect improvement.
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 solution achieves a significant increase in dielectric constant and maintains processability, allowing for the formation of a uniform, flexible high-K dielectric layer suitable for various electronic devices, including inorganic electroluminescent devices and flexible displays.
Implementation Method 1
a dielectric paste composition including a halogenated hydrocarbon
Implementation Method 2
applied to a substrate and dried at a temperature of 60 to 200°C
Data Source
AI summary
A dielectric paste composition including: a plurality of inorganic dielectric particles, a binder, a solvent, and a halogenated hydrocarbon. Also disclosed is a method of forming a dielectric layer, a dielectric layer, and a device including the dielectric layer.