Automatic material transport system for semiconductor production
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SEMICON MFG INT (SHANGHAI) CORP
- Publication Date
- 2008-11-19
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The present invention relates to material handling equipment, and more particularly to an automated material handling system (AMHS) used in a semiconductor manufacturing workshop (FAB). Background technique
[0002] Automated material handling systems are widely used in the integrated circuit (IC) chip manufacturing industry. In the product manufacturing environment, WIP storage units and aerial lift mechanisms are used to store WIP components and transfer components between workstations and processing equipment. A typical manufacturing process for an IC chip includes multiple steps, including oxidation, photolithography, diffusion, deposition, cleaning, ion implantation, etching, and the like. These processes are usually performed by different processing equipment, such as chemical vapor deposition chambers, ion implantation chambers and etchers. Accordingly, the semiconductor wafer WIP is typically transferred multiple times between different workst...