Substrate Transfer Layout for Uniform Supercritical Drying
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing substrate drying technologies using supercritical fluids often result in non-uniform processing quality due to varying transfer path lengths between liquid film forming and drying devices, leading to inconsistencies in substrate treatment.
Innovation Solution
A substrate processing apparatus with a transfer block that maintains equal transfer path lengths between multiple liquid film forming devices and drying devices, utilizing a transfer device to synchronize substrate movement and ensure uniform processing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple liquid film forming devices are used to increase processing capacity, then productivity is improved, but non-uniformity in processing quality increases due to uneven transfer paths
Solution Approach 1:
The transfer block is designed to provide equal transfer path lengths from each liquid film forming device to the drying device. This equipotential design ensures that substrates processed in parallel across multiple devices experience identical transfer conditions and processing times, eliminating the quality non-uniformity that would otherwise result from path length variations.
2Manufacturing precision
If transfer path lengths are made equal to improve processing uniformity, then manufacturing precision is improved, but device complexity increases due to the need for synchronized transfer mechanisms
Solution Approach 1:
The system is divided into modular components: multiple liquid film forming devices, a central transfer block with synchronized transfer mechanisms, and drying devices. Each module is independently designed and controlled, allowing the complex synchronization function to be isolated to the transfer block while keeping other components relatively simple and maintainable.
3Manufacturing precision
If processing times are synchronized to reduce non-uniformity, then manufacturing precision is improved, but loss of time increases due to waiting periods for synchronization
Solution Approach 1:
The transfer block continuously transfers substrates from liquid film forming devices to drying devices without interruption or waiting periods. By designing equal transfer paths and synchronized mechanisms, the system maintains continuous productive operation across all parallel processing channels, eliminating idle waiting time that would occur with sequential synchronization approaches.
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 ensures consistent and uniform processing quality across substrates by equalizing the time taken for liquid film replacement with supercritical fluid, reducing the risk of pattern collapse and enhancing processing efficiency.
Implementation Method 1
a drying device configured to replace the liquid film with a supercritical fluid to dry the substrate
Data Source
AI summary
A substrate processing apparatus includes a unit block including multiple liquid film forming devices each configured to form a liquid film on a top surface of a substrate, and a drying device configured to replace the liquid film with a supercritical fluid to dry the substrate; and a transfer block provided between the multiple liquid film forming devices and the drying device. The transfer block includes a transfer device configured to transfer the substrate between the multiple liquid film forming devices and the drying device, and a length of a transfer path of the substrate is equal between each of the multiple liquid film forming devices and the drying device.