Patent ID: 7764465
Filing Date: 2010-07-27
Classification: G11B

Abstract:
1. A thin-film magnetic head comprising: a pair of magnetic layers disposed with a predetermined gap therebetween on a surface facing a recording medium, the layers connected to each other along first inner part in a height direction from the medium-facing surface; and a spiral recording coil disposed between the pair of magnetic layers and wound around a connecting portion of the pair of magnetic layers, wherein the recording coil includes a dense coil portion formed with a pitch less than that of a second inner part in the height direction so as to be closer to the medium-facing surface than the connecting portion, the second inner part is positioned to an upper area in the height direction than that of the first inner part, and wherein an organic insulating layer is locally formed to fill coil gaps of the dense coil portion, and coil gaps other than those of the dense coil portion are filled with an inorganic insulating layer.