Substrate Transfer Unit for Simultaneous Multi-Substrate Processing
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Solution Overview
Problem
Current substrate processing systems are limited in their ability to process multiple substrates simultaneously, leading to inefficiencies in manufacturing processes for display panels, where metal thin films and inorganic layers are formed on substrates.
Innovation Solution
A substrate processing system is designed to load and transfer multiple substrates at once, featuring a substrate loading unit with specific frame and support bar configurations, and a transfer unit with robot arms, allowing for simultaneous processing in multiple process chambers with stages equipped for high-frequency and electrostatic adsorption power, along with insulation layers to prevent plasma arcs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If substrates are transferred one by one from the cassette to the substrate processing apparatus, then the transfer mechanism is simple, but the processing efficiency is low and multiple substrates cannot be processed simultaneously
Solution Approach 1:
Multiple substrates are transferred simultaneously through a single transfer mechanism rather than transferring them one by one. The transfer unit is configured to hold and move multiple substrates together, merging multiple transfer operations into one, thereby improving processing efficiency while maintaining relatively simple mechanism design
Solution Approach 2:
The transfer unit is designed to perform multiple functions: it can transfer different numbers of substrates (1 or multiple) depending on the processing requirements. This multi-functional design allows the system to adapt to different production needs without requiring separate transfer mechanisms for single and multiple substrate transfers
2Productivity
If multiple substrates are transferred at the same time, then processing efficiency is improved, but the transfer mechanism and system complexity increase
Solution Approach 1:
The substrate loading unit is divided into multiple independent areas (first area and second area), each capable of holding substrates. This segmentation allows flexible configuration of substrate positions and enables the transfer mechanism to handle multiple substrates simultaneously while maintaining a relatively simple and modular structure that can be scaled based on production needs
3Reliability
If multiple substrates are disposed on the same stage without insulation, then the device structure is simple, but plasma arcs may occur between adjacent substrates
Solution Approach 1:
An insulation layer is introduced as an intermediary element between adjacent substrates on the same stage. This insulation layer prevents direct electrical contact between substrates, thereby preventing plasma arcs while maintaining a relatively simple overall device structure. The insulation layer can be implemented as a thin coating or discrete insulating elements positioned between substrates
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 system enables efficient processing of multiple substrates concurrently, improving manufacturing efficiency by allowing for simultaneous formation of metal thin films and inorganic layers on substrates, thereby enhancing production capabilities.
Implementation Method 1
a stage on which the N substrates are disposed, and an insulation layer disposed between the N substrates
Implementation Method 2
an insulation layer disposed between the N substrates
Data Source
AI summary
A substrate processing system includes a substrate loading unit which loads a plurality of substrates, a substrate transfer unit which transfers N (where N is natural number) substrates at the same time from the substrate loading unit, and a substrate processing unit including a plurality of process chambers which receives the N substrates at the same time from the substrate transfer unit and processes the received substrates where each of the process chambers includes a stage on which the N substrates are disposed and an insulation layer disposed between the N substrates.