Imprint Mold Speed Control for Error Compensation
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Solution Overview
Problem
Current imprint apparatuses face challenges in improving throughput due to manufacturing errors and dimensional variations in molds, leading to potential collisions with substrates or insufficient contact, which can result in damage or decreased filling speed.
Innovation Solution
A forming apparatus with a controller that adjusts the relative speed of the mold and substrate interaction, switching from a first relative speed to a second, lower speed to compensate for manufacturing errors, ensuring proper contact and preventing collisions while maintaining throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mold is driven at a high speed until contact with the imprint material, then the throughput is improved, but the mold may collide with the substrate and be damaged due to manufacturing errors
Solution Approach 1:
The system performs preliminary measurement of the distance between the mold and substrate before the imprint process, and pre-calculates the appropriate driving speed based on measured manufacturing errors. This preliminary action allows the mold to be driven at high speed only when safe, while slowing down when manufacturing errors indicate potential collision risk, thus maintaining both throughput and mold safety
Solution Approach 2:
The system continuously monitors the actual distance between mold and substrate during operation, compares it with the expected distance based on manufacturing error data, and dynamically adjusts the driving speed in real-time. This feedback mechanism enables the system to maintain high throughput while automatically reducing speed when manufacturing variations indicate potential collision hazards
2Productivity
If the mold is driven at a high speed, then the throughput is improved, but the contact between the pattern surface and imprint material may be insufficient, resulting in slow filling
Solution Approach 1:
The system dynamically adjusts the mold driving speed based on real-time conditions and manufacturing error data. By making the speed variable rather than constant, the system can optimize for both throughput and filling quality in different operational contexts, resolving the contradiction between high-speed operation and sufficient contact pressure
3Reliability
If the driving speed is reduced to prevent collision, then the mold safety is improved, but the throughput decreases
Solution Approach 1:
The system applies different driving speeds to different regions of the mold based on local manufacturing error characteristics. Areas with smaller manufacturing errors can operate at higher speeds, while areas with larger errors receive reduced speed commands. This localized speed control maintains overall throughput while protecting specific vulnerable regions of the mold
Data Source
AI summary
A forming apparatus forms a formable material using a mold including a contact region to be brought into contact with the formable material on a substrate. The apparatus includes a controller configured to perform processing of bringing the contact region and the formable material on the substrate into contact with each other. The controller controls the processing so as to bring the mold and the substrate close to each other at a first relative speed and then bring the mold and the substrate close to each other at a second relative speed lower than the first relative speed, and controls switching from the first relative speed to the second relative speed so as to compensate a manufacturing error of the mold.