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公开(公告)号：US11232812B1
公开(公告)日：2022-01-25
申请号：US17178978
申请日：2021-02-18
发明人： Guoqiang Zheng , Ellis Cha
摘要： A slider-mounted read/write transducer for a hard disk drive (HDD) has a topology that mitigates attraction and accumulation of lubricant and hydrocarbons during the HDD operation. The slider topology may include a pattern of cavities and channels symmetrically disposed about a central longitudinal axis. The slider may also have a transverse channel extending perpendicularly inward from an opening in each side edge of the slider to intersect a channel that extends longitudinally along a middle axis towards a leading-edge pad in which a read/write transducer is embedded. The ends of the transverse channel open into an air-carrying groove extending vertically upward in the side of the slider in which a side flow blocker (SFB) restricts the air flow into the channel portion.
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公开(公告)号：US09892746B1
公开(公告)日：2018-02-13
申请号：US15431811
申请日：2017-02-14
发明人： Guoqiang Zheng , Ellis Cha , Zhijun Liu , Qinghua Zeng
CPC分类号： G11B5/3106 , G11B5/102 , G11B5/48 , G11B5/4806 , G11B5/6005 , G11B5/6082 , G11B17/32 , G11B21/21 , H01L21/31
摘要： A slider design for a hard disk drive (HDD) features an air-bearing surface (ABS) topography with soft bumper pads (SBP) formed proximally to corners of the leading edge and the trailing edge. The bumper pads are formed by a process that combines the use of a first photomask for subtractive etching of the ABS to form pedestals, followed by additive depositions onto the pedestals using a second lift-off photomask. The additive process deposits sequences of Si layers and diamond-like carbon (DLC) layers to produce a soft bumper pad that is energy absorbing and heat conducting, thereby protecting the recording media from surface damage and thermal erasures.
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