Dual electrical lapping guides with common bonding pad
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United States of America Patent
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Jun 23, 2009
Grant Date -
N/A
app pub date -
Apr 28, 2006
filing date -
Jul 1, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A recording head comprises a write element, including a coil and a dynamic fly-height heater, and two electrical lapping guides. The head also comprises a number of bonding pads including a DFH bonding pad and a shared bonding pad both electrically connected to the dynamic fly-height heater. Each lapping guide defines a circuit between the shared bonding pad and a dedicated bonding pad and each includes a resistive element. The resistive elements of the two lapping guides can be vertically aligned to be used to control a lapping tilt angle when a bar of unfinished heads is lapped. After lapping, a channel is defined into the transducer of the recording head. Forming the channel can remove at least a portion of each lapping guide in order to break the electrical circuit of that guide.
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Cited Art Landscape
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