Invention Grant
- Patent Title: Method for manufacturing a magnetic write head using novel mask structure
- Patent Title (中): 使用新的掩模结构制造磁写头的方法
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Application No.: US13687986Application Date: 2012-11-28
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Publication No.: US08801944B2Publication Date: 2014-08-12
- Inventor: Guomin Mao , Yi Zheng
- Applicant: HGST Netherlands B.V.
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Main IPC: B44C1/22
- IPC: B44C1/22

Abstract:
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.
Public/Granted literature
- US20140144872A1 METHOD FOR MANUFACTURING A MAGNETIC WRITE HEAD USING NOVEL MASK STRUCTURE Public/Granted day:2014-05-29
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