Patent ID: 7436633

Claim:
A thin-film magnetic head comprising a slider substrate, a reproducing device and a recording device, wherein: said slider substrate is of electric conductivity, and has a first insulating layer at one end face, said reproducing device comprises a first shield layer, a second insulating layer, a second shield layer and a magneto resistive effect device wherein said first shield layer, said second insulating layer and said second shield layer are adjacent to one another in this order on said first insulating layer, said magneto resistive effect device is interposed between said first shield layer and said second shield layer, and buried therearound with said second insulating layer, with said first shield layer and said second shield layer as electrode layers, said recording device has a coil and a magnetic circuit, said coil is insulated and supported, said magnetic circuit is to guide a magnetic flux occurring by a current passing through said coil, and has a magnetic layer opposite to said second shield layer via a third insulating layer, a parasitic capacity occurring with said first insulating layer as a capacity layer between said slider substrate and said first shield layer remains substantially equal to a parasitic capacity occurring with said third insulating layer as a capacity layer between said magnetic layer and said second shield layer, and said magnetic layer and said slider substrate are connected together by a resistance.