Integrated Boule Grinding and X-Ray Orientation Correction
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Solution Overview
Problem
The existing process for preparing boules for cutting into wafers is time-consuming and requires multiple systems, involving manual handling and separate stations for grinding and polishing, which is inefficient and costly.
Innovation Solution
A system and method that includes a machine with dual workheads and grinding wheels for automated grinding and X-ray imaging to correct crystalline orientation, allowing for simultaneous handling and processing of boules within an enclosure, reducing manual intervention and increasing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual handling and separate stations are used for grinding and polishing, then each step can be performed individually, but the process becomes time-consuming and requires several different systems
Solution Approach 1:
The patent combines multiple separate finishing operations (grinding, polishing, measuring) into a single integrated machine system. The boule is glued to a spindle that can be positioned at different stations within the same machine, allowing sequential operations without manual handling or transfer between separate systems. This merging eliminates the time loss from moving boules between separate grinding and polishing stations while maintaining the ability to perform each operation individually.
Solution Approach 2:
The machine system is designed with multi-functional capability to perform grinding, polishing, and measuring operations on the same boule within a single system. The spindle assembly can be positioned at different workstations, and the machine includes various tools and measurement devices that can be applied to the same workpiece without requiring separate specialized systems for each operation.
2Manufacturing precision
If individual glueing and separate processing steps are performed, then each boule can be processed individually, but the process requires periodic performance at different stations and multiple systems
Solution Approach 1:
The patent integrates multiple finishing and measurement operations into a single machine system with multiple stations. The boule remains mounted on the same spindle throughout the process, allowing sequential grinding, polishing, and measuring operations to be performed at different stations within the same machine without requiring transfer to separate systems, thereby reducing overall system complexity while maintaining precision.
Solution Approach 2:
The machine system is segmented into multiple functional stations (grinding station, polishing station, measuring station) that can be positioned around a central spindle. This segmentation allows each operation to be performed with specialized equipment while keeping the workpiece in one location, reducing the complexity of transferring between separate systems while maintaining high finishing quality at each stage.
3Reliability
If multiple separate systems are used for different operations, then each system can be optimized for its specific function, but the overall process becomes costly and inefficient
Solution Approach 1:
The patent describes a universal machine system that can perform multiple finishing operations (grinding, polishing) and measurement functions on the same boule within a single integrated platform. This multi-functional system maintains operation reliability by using specialized tools for each function while eliminating the inefficiencies of separate systems, including manual handling, transfer time, and coordination between multiple independent systems.
Solution Approach 2:
The patent combines multiple separate processing systems into one integrated machine that can perform grinding, polishing, and measuring operations sequentially on the same boule. This merging improves productivity by eliminating transfer time and manual handling between separate systems while maintaining operational reliability through dedicated tools for each function within the unified system.
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 system automates multiple operations on boules, significantly reducing processing time and costs by enabling simultaneous handling and precise grinding and polishing, improving the efficiency of boule preparation for wafer cutting.
Implementation Method 1
an X-ray machine disposed within the enclosure and configured to obtain at least one of X-ray images and diffraction data from the workpiece that is held by the at least one workhead
Data Source
AI summary
The present invention relates to several systems and methods for clamping, machining, inspecting, and/or correcting workpieces in an integrated machine.