Universal Load Port for UV Semiconductor Wafer Processing
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Solution Overview
Problem
The frequent swapping of load ports on ultraviolet radiation machines to accommodate different sizes of semiconductor wafers reduces processing efficiency, as existing systems require manual uninstallation and reinstallation of load ports, leading to significant time wastage.
Innovation Solution
A universal load port that includes specific alignment features for both 8-inch and 12-inch wafers, allowing for precise positioning and alignment of cassettes, enabling a single machine to process multiple wafer sizes without the need for frequent load port changes, utilizing a robot arm and ultraviolet light to weaken tape adhesives for easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate load ports are used for different wafer sizes, then positioning precision is improved, but device complexity and time loss increase due to frequent swapping
Solution Approach 1:
The load port is designed with a universal structure that can accommodate multiple wafer sizes (8-inch and 12-inch) through a single device. The universal load port includes adjustable positioning features and multiple sets of alignment features that can be selectively engaged based on the wafer size being processed, eliminating the need for separate load ports for different wafer dimensions.
2Adaptability or versatility
If load ports are swapped frequently to accommodate different wafer sizes, then adaptability is improved, but productivity deteriorates due to time wastage
Solution Approach 1:
The universal load port enables a single load port to handle multiple wafer sizes (8-inch and 12-inch) without requiring swapping operations. The load port includes multiple sets of alignment features and positioning mechanisms that can be selectively engaged based on the wafer size, allowing the system to adapt to different wafer sizes while maintaining continuous operation and eliminating downtime associated with load port replacement.
3Manufacturing precision
If manual swapping of load ports is performed, then ease of operation is reduced, but manufacturing precision is maintained through proper alignment
Solution Approach 1:
The universal load port incorporates self-aligning features and automated positioning mechanisms that enable the system to automatically adjust and align itself for different wafer sizes without requiring manual intervention. The load port includes multiple sets of alignment features that automatically engage with the appropriate positioning points based on the wafer size being processed, eliminating the need for manual swapping operations while maintaining precise alignment.
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 solution significantly reduces manual intervention and time spent on swapping load ports, enhancing processing efficiency by allowing a single RAD UV machine to handle both 8-inch and 12-inch wafers with minimal downtime, thereby improving overall semiconductor wafer processing efficiency.
Implementation Method 1
An ultraviolet radiation machine may be used to radiate semiconductor wafers having tape adhered to them to thereby weaken the tape adhesive
Data Source
AI summary
A semiconductor cassette universal load port. The universal load port comprises a frame, three pins coupled to the frame forming a first portion of a kinematic coupling system configured to locate a 12-inch semiconductor wafer cassette for access by a robot arm of an ultraviolet (UV) radiation (RAD) machine, a first bracket coupled to the frame, a second bracket coupled to the frame, and a chuck coupled to the frame, wherein the first and second bracket and the chuck are configured to locate an 8-inch semiconductor wafer cassette for access by the robot arm of the RAD UV machine.