06801408 is referenced by 144 patents and cites 1 patents.

In at least one embodiment, the apparatus of the invention is a read sensor which includes a shield, a sensor element, a read gap positioned between the shield and the sensor element, and an extra gap positioned between the shield and the sensor element and adjacent the read gap. The sensor element is positioned in a sensor layer. With the sensor element and the shield separated by only the relatively thin gap layer, high sensitivity of the sensor element is obtained. Further, by placing the relatively thick extra gap between the shield and the sensor layer and about the sensor element, the potential for shorting is minimized. The shield can be planarized to keep the read gap and the sensor layer at, and about, the sensor element substantially planar. This, in turn, results in improved control of sensor track widths and greatly reduces the potential for pooling of photoresist. In at least one embodiment, the method of the invention is for fabricating a read sensor and includes depositing a read gap onto a planarized shield, depositing an extra gap adjacent an exposed portion of the read gap, and depositing a sensor element onto the exposed portion of the first gap and adjacent to the extra gap.

Title
Data storage and retrieval apparatus with thin film read head having a planar sensor element and an extra gap and method of fabrication thereof
Application Number
9/705420
Publication Number
6801408 (B1)
Application Date
November 2, 2000
Publication Date
October 5, 2004
Inventor
Hau Ching Tong
San Jose
CA, US
Ronald A Barr
Mountain View
CA, US
Yingjian Chen
Fremont
CA, US
Agent
Haynes Beffel & Wolfeld
US
Assignee
Western Digital
CA, US
IPC
G11B 5/39
View Original Source