发明名称 |
Method for dry etching of a semiconductor substrate |
摘要 |
A method for dry etching of a semiconductor substrate includes producing convex structures on a surface of a semiconductor wafer by using a suitable masking and a suitable etchant. A thick photoresist layer is applied to a semiconductor wafer and structured. The structured photoresist layer is liquified by the influence of temperature to produce a spherical structure and is then hardened as an etchable masking. The semiconductor wafer structured with the photoresist layer is etched in plasma at etching speeds being similar for the semiconductor material and the photoresist, for transferring a convex structure of the photoresist layer to the semiconductor wafer, during etching down of the photoresist layer.
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申请公布号 |
US5705025(A) |
申请公布日期 |
1998.01.06 |
申请号 |
US19950539198 |
申请日期 |
1995.10.04 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
DIETRICH, RALF;FRANZ, GERHARD |
分类号 |
G02B6/124;(IPC1-7):G02B3/00;H01L21/00 |
主分类号 |
G02B6/124 |
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