Linear Wafer Drive Modular Cluster Tool
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Solution Overview
Problem
Conventional semiconductor cluster tools rely on central robots for wafer transfer, which limits throughput and is prone to downtime during maintenance or upgrades, as they require complex redesigns and cannot efficiently handle multiple processing chambers simultaneously.
Innovation Solution
A modular cluster tool system utilizing multiple linear wafer drives and a wafer transfer station, controlled by a transport module controller, allows for distributed motion and independent operation of processing modules, enabling simultaneous access to multiple processing chambers and facilitating field upgrades without redesigning the entire system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a central robot is used for wafer transfer, then the system structure is simplified, but the throughput is limited and maintenance downtime increases
Solution Approach 1:
The patent divides the central robot function into multiple independent linear wafer drives, each capable of independent operation. This segmentation allows parallel wafer transfer operations to multiple processing chambers, thereby increasing throughput while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The system transitions from a static central robot to dynamic linear wafer drives that can independently position and transfer wafers. This dynamic distribution of motion control enables simultaneous access to multiple chambers, improving productivity while the modular design allows flexible reconfiguration for maintenance.
2Ease of operation
If a central robot is used for wafer transfer, then the system is easier to control, but maintenance and upgrades require complex redesigns and cause system downtime
Solution Approach 1:
By segmenting the central robot into multiple independent linear wafer drives, each module can be maintained or upgraded separately without affecting the entire system. This modular architecture eliminates the need for complex redesigns during maintenance, as individual drives can be serviced while others continue operating.
Solution Approach 2:
The system changes the control parameter from centralized robot coordination to distributed linear drive control. Each linear wafer drive has independent motion control, simplifying the control logic for each module while enabling parallel operations. This parameter change facilitates easier maintenance as individual modules can be isolated and serviced.
3Device complexity
If a central robot is used for wafer transfer, then the system has fewer components, but it cannot efficiently handle multiple processing chambers simultaneously
Solution Approach 1:
The patent segments the single central robot into multiple linear wafer drives, each dedicated to specific chamber access. This segmentation enables simultaneous wafer transfer to multiple processing chambers, directly improving productivity. The modular nature keeps component complexity manageable through standardized designs.
Solution Approach 2:
Each linear wafer drive is designed as a universal module capable of transferring wafers to different processing chambers. This multi-functionality allows the system to handle multiple chambers simultaneously using identical modular components, increasing productivity without proportionally increasing overall system complexity.
Data Source
AI summary
A modular cluster tool is disclosed. According to one embodiment, a system, comprises a wafer transfer station that includes a first vacuum chamber that stores a plurality of semiconductor wafers. The system also includes an equipment front end module interface, and two or more shuttle lock interfaces.