发明授权
- 专利标题: Method for manufacturing a magnetic write head using novel mask structure
- 专利标题(中): 使用新的掩模结构制造磁写头的方法
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申请号: US13687986申请日: 2012-11-28
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公开(公告)号: US08801944B2公开(公告)日: 2014-08-12
- 发明人: Guomin Mao , Yi Zheng
- 申请人: HGST Netherlands B.V.
- 申请人地址: NL Amsterdam
- 专利权人: HGST Netherlands B.V.
- 当前专利权人: HGST Netherlands B.V.
- 当前专利权人地址: NL Amsterdam
- 代理机构: Zilka-Kotab, PC
- 主分类号: B44C1/22
- IPC分类号: B44C1/22
摘要:
A method for manufacturing a magnetic write pole of a magnetic write head that achieves improved write pole definition reduced manufacturing cost and improves ease of photoresist mask re-work. The method includes the use of a novel bi-layer hard mask beneath a photoresist mask. The bi-layer mask includes a layer of silicon dielectric, and a layer of carbon over the layer of silicon dielectric. The carbon layer acts as an anti-reflective coating layer that is unaffected by the photolithographic patterning process used to pattern the write pole and also acts as an adhesion layer for resist patterning. In the event that the photoresist patterning is not within specs and a mask re-work must be performed, the bi-layer mask can remain intact and need not be removed and re-deposited. In addition, the low cost and ease of use silicon dielectric and carbon reduce manufacturing cost and increase throughput.
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