Invention Grant
US07788798B2 Method for manufacturing a perpendicular magnetic write head with wrap around magnetic trailing and side shields 有权
用于制造垂直磁性写入头的方法,包括磁性尾部和侧面屏蔽

Method for manufacturing a perpendicular magnetic write head with wrap around magnetic trailing and side shields
Abstract:
A method for manufacturing a magnetic write head having a wrap around magnetic shield. The method allows a highly accurate short wavelength such as 193 mm photolithography to be used to accurately define the placement and critical dimension of wrap around magnetic shield. The method includes the formation of a magnetic write pole, top gap, and side gap and the deposition of a RIEable fill layer thereover, and CMP to planarization. A 193 nm photolithography and ion milling is used to form a mask over the RIEable layer and one or more reactive ion etching processes are performed to pattern the RIEable layer through 193 nm photolithography mask. A wrap around shield can then be electroplated into the opening formed in the RIEable layer.
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