Adhesion Primer Layer for Imprint Lithography
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing adhesion primer layer application methods in imprint lithography, such as spin coating, face challenges with particle contamination and limited throughput, especially when applying layers to both sides of substrates like magnetic media, which can lead to delamination issues due to uneven adhesion forces.
Innovation Solution
A method involving a multi-functional component with specific functional groups that form covalent bonds with the substrate and polymerizable material, allowing for simultaneous coating of both sides without physical contact, using chemical vapor deposition or dip-coating processes to create a strong and uniform adhesion primer layer, thereby enhancing the adhesion between the polymeric layer and the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spin coating is used to apply adhesion primer layer, then the adhesion primer layer can be applied to the substrate, but particle contamination occurs and throughput is limited
Solution Approach 1:
The patent replaces the mechanical spin coating process with a chemical vapor deposition process. Instead of using mechanical rotation and liquid coating, the adhesion primer is deposited through chemical reactions in vapor phase, eliminating mechanical contact and associated particle contamination while maintaining uniform adhesion properties.
Solution Approach 2:
The patent changes the physical state and deposition mechanism from liquid-phase spin coating to vapor-phase chemical deposition. This parameter change allows the adhesion primer to be deposited without mechanical contact, reducing particle contamination while achieving uniform coverage through controlled chemical reactions.
2Reliability
If spin coating is used to apply adhesion primer layer, then the adhesion primer layer can be applied to the substrate, but processing throughput is limited
Solution Approach 1:
The patent combines the coating of both sides of the substrate into a single vapor deposition process. By exposing both surfaces simultaneously to the reactive vapor environment, the process eliminates the sequential operations required in spin coating, thereby doubling the effective throughput while maintaining strong adhesion on both surfaces.
Solution Approach 2:
The replacement of mechanical spin coating with chemical vapor deposition enables batch processing of multiple substrates or double-sided coating in a single operation, significantly increasing processing throughput while maintaining reliable adhesion through controlled chemical bonding.
3Adaptability or versatility
If adhesion primer is applied to both sides of substrate, then double-sided imprinting is enabled, but uneven adhesion forces cause delamination
Solution Approach 1:
The patent replaces mechanical spin coating with chemical vapor deposition to achieve uniform adhesion primer layers on both sides of the substrate. The chemical deposition process provides controlled, uniform coverage that prevents the uneven adhesion forces and delamination issues associated with mechanical coating methods.
Solution Approach 2:
By changing from liquid-phase to vapor-phase deposition, the patent achieves more uniform film thickness and adhesion properties on both substrate surfaces. The vapor-phase process allows better control of deposition parameters, ensuring consistent adhesion strength that prevents delamination during double-sided imprinting operations.
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
This approach ensures strong and uniform adhesion forces between the polymeric layer and the substrate, reducing delamination risks and increasing processing efficiency by eliminating particle contamination and enabling batch processing of double-sided media.
Implementation Method 1
initiating a first chemical reaction that forms a first covalent bond between the first end of the component and the surface of the substrate
Implementation Method 2
initiating polymerization of the polymerizable material to form a polymeric layer
Implementation Method 3
using chemical vapor deposition or dip-coating processes to create a strong and uniform adhesion primer layer
Data Source
AI summary
The invention provides a method of applying an adhesion primer layer for an imprint lithography process that includes contacting a fluid with a surface of a substrate in a coating process and initiating a chemical reaction that forms a covalent bond between a component in the fluid and the surface of the substrate such that an adhesion primer layer is adhered to the surface of the substrate. A polymeric layer may be adhered to the surface of the substrate coated with the adhesion primer layer. The method allows adhesion primer coating for double-sided imprinting applications including patterned magnetic media.