Ionic Coating Patterning via Electrostatic Transfer
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Solution Overview
Problem
Current pattern formation technologies, such as photolithography and roll printing, face challenges with process complexity, high material usage, and inadequate precision and transfer efficiency, particularly in forming micropatterns for electronic materials.
Innovation Solution
A method involving the application of coatings with ionic components on a substrate, using electrostatic charges to transfer patterns onto a second substrate and subsequently onto a print object, with electrodes on both substrates controlled to enhance precision and efficiency, and a coating composition comprising 50-95% electronic material and 5-50% cationic or anionic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If photolithography is used to form micropatterns, then pattern precision is improved, but process complexity and material usage increase
Solution Approach 1:
The invention extracts and eliminates unnecessary process steps from photolithography. By using direct roll printing with a clich having projections, the method removes the need for photoresist coating, exposing, developing, washing, and curing steps, while still achieving precise micropattern formation through direct mechanical transfer of the pattern from the clich to the substrate.
Solution Approach 2:
The invention uses a physical copy (clich with projections) of the desired pattern to directly transfer the micropattern onto the substrate. This copying approach eliminates the need for complex photochemical processes while maintaining pattern precision, as the pattern is mechanically replicated from the clich to the substrate through direct contact printing.
2Manufacturing precision
If photolithography is used to form micropatterns, then pattern precision is improved, but material consumption increases
Solution Approach 1:
The invention extracts and eliminates the photoresist material from the patterning process. By using direct roll printing where the clich projections directly transfer the pattern to the substrate, the method removes the need for photoresist coating, exposing, developing, washing, and curing steps, significantly reducing material consumption.
Solution Approach 2:
The invention replaces expensive and consumable photoresist materials with a durable clich that can be reused multiple times. The clich with its projections serves as a reusable template that directly transfers the pattern without being consumed in the process, eliminating ongoing material costs.
3Ease of manufacture
If roll printing is used for pattern transfer, then process simplicity is improved, but pattern precision and transfer efficiency deteriorate
Solution Approach 1:
The invention applies local quality by creating projections on the clich that precisely correspond to the desired pattern locations. These localized raised portions ensure that coating material is transferred only at specific predetermined positions, achieving high pattern precision while maintaining the simplicity of the roll printing process.
Solution Approach 2:
The invention changes the physical parameters of the printing system by using a clich with projections instead of a flat surface. This parameter change in the surface topology of the printing element enables precise pattern transfer through direct contact, improving pattern precision without complicating the overall roll printing process.
4Ease of manufacture
If roll printing is used for pattern transfer, then process simplicity is improved, but transfer efficiency deteriorates
Solution Approach 1:
The projections on the clich create localized areas of high coating material concentration that transfer efficiently to the substrate. This localized quality ensures that the coating material is deposited precisely where needed with high transfer efficiency, while the rest of the substrate receives no material, maintaining process simplicity.
Solution Approach 2:
The invention changes the surface parameter of the clich from flat to projected, which fundamentally improves transfer efficiency. The projections ensure direct contact and complete transfer of coating material at the pattern locations, eliminating the inefficiencies of conventional roll printing while keeping the process simple.
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 method achieves precise pattern formation with high transfer efficiency, improving productivity in electronic device manufacturing by simplifying the process and reducing costs while maintaining uniformity and precision.
Implementation Method 1
the electrode on the first substrate is electrified to have the same electric charge as the ionic component of the coatings in step (b)
Implementation Method 2
the electrode on the second substrate is electrified to have the electric charge opposite to the electric charge of the ionic component of the coatings in step (b)
Data Source
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AI summary
Disclosed is a method of forming a pattern by means of coatings containing an ionic component having a positive or negative electric charge using electrostatic attraction force and/or repulsion force. In the method, it is possible to significantly improve precision and efficiency of the pattern formation.