Air bearing surface design with extreme particle trapping holes for improving HDD particle robustnes

摘要

Embodiments disclosed herein generally relate to a head slider within disk drive data storage devices. A head slider comprises a head body having a leading portion on a leading edge and a trailing portion on a trailing edge. The leading portion includes a first leading pad disposed at the MFS and a second leading pad disposed between the first leading pad and the leading edge. The second leading pad is recessed a first vertical distance from the MFS. One or more particle trapping holes are disposed between the first leading pad and the second leading pad. The one or more particle trapping holes are recessed a second vertical distance from the MFS, the second vertical distance being greater than the first vertical distance. Particles encountered by the leading portion may be suctioned into the one or more particle trapping holes, preventing the particles from building-up onto the MFS.

主权项

1. A head slider, comprising:
a head body having a leading edge, a trailing edge and a media facing surface, the media facing surface having:
a trailing portion, the trailing portion having first and second side pads disposed at the media facing surface; anda leading portion having a first leading pad disposed at the media facing surface; the head body also having a second leading pad disposed between the leading edge and the first leading pad, the second leading pad at least partially surrounding the first leading pad, wherein the second leading pad is disposed at a first surface recessed a first vertical distance from the media facing surface; wherein one or more first particle trapping holes are disposed between the first leading pad and the second leading pad, wherein a bottom of the one or more first particle trapping holes are disposed a second vertical distance from the media facing surface that is greater than the first vertical distance, wherein the head body further comprises a wall at least partially surrounding a perimeter of the trailing portion and the first and second side pads, wherein the wall is disposed at the first vertical distance, wherein one or more second particle trapping holes are disposed between the wall and the first and second side pads.