首页>
外国专利>
CASSETTE FOR PROTECTING PROJECTING MASK USED FOR PROJECTOR AND METHOD AND DEVICE FOR INSERTING AND DISCHARGING SAME CASSETTE INTO AND FROM PROJECTOR
CASSETTE FOR PROTECTING PROJECTING MASK USED FOR PROJECTOR AND METHOD AND DEVICE FOR INSERTING AND DISCHARGING SAME CASSETTE INTO AND FROM PROJECTOR
展开▼
机译:用于保护投影仪的投影用盒的盒以及将相同的盒插入到盒中或从盒中插入和放电的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
There is disclosed a system for storing a projection mask of the type used for printing integrated circuit patterns on silicon wafers. A special cassette package permits the mask to be stored in a clean sealed environment. A delivery system transports the sealed cassette into an optical projection instrument wherein the cassette is opened and the mask advanced to the projection stage. After projection, the mask is returned and automatically sealed into the cassette. The cassette may be evacuated or, alternatively, filled with a clean gas. The mask sealed in the cassette can then be stored until its use is again required.
展开▼