Company Filing History:
Years Active: 2011-2013
Title: Cherng-Chyi Yan: Innovator in PMR Head Technology
Introduction
Cherng-Chyi Yan is a notable inventor based in San Jose, CA, who has made significant contributions to the field of magnetic recording technology. He holds 2 patents that showcase his innovative approach to improving PMR (Perpendicular Magnetic Recording) heads.
Latest Patents
Yan's latest patents include a method to make an integrated side shield PMR head with a non-conformal side gap. This invention presents a non-conformal integrated side shield structure for a PMR write head, where the sidewalls of the side shield are not parallel to the pole tip sidewalls. This design results in a different side gap distance between the leading and trailing pole tip edges and the side shield. Consequently, it reduces the side fringing field and enhances overwrite performance. The side gap distance remains constant as it increases from the ABS along the main pole layer. The fabrication method allows for the trailing shield and side shield to be formed in the same step, creating a self-aligned shield structure. This innovative design also eliminates adjacent track erasure caused by flux choking at the side shield and trailing shield interface. The invention includes a tapered main pole layer in a narrow pole tip section.
Career Highlights
Cherng-Chyi Yan is currently employed at Headway Technologies, Incorporated, where he continues to develop cutting-edge technologies in the field of magnetic recording. His work has significantly advanced the performance and reliability of PMR heads.
Collaborations
Yan has collaborated with notable colleagues, including Feiyue Li and Shiwen Huang, contributing to the advancement of their shared field of expertise.
Conclusion
Cherng-Chyi Yan's innovative work in PMR head technology exemplifies the impact of dedicated inventors in the field of magnetic recording. His contributions continue to shape the future of data storage technology.