Patent ID: 7808025
Filing Date: 2010-10-05
Classification: G11B,H01L

Abstract:
1. An electric field read/write head comprising: a substrate having a first surface facing a recording medium and a second surface being substantially perpendicular to the first surface; a resistance region having a predetermined length and a predetermined width and formed in the second surface of the substrate, wherein the resistance region comprises an end surface having the predetermined length and facing the recording medium and disposed in the first surface; a source formed in the second surface of the substrate and disposed on a first side of the resistance region; a drain formed in the second surface of the substrate and disposed on a second side of the resistance region; and an insulating layer and a write electrode formed sequentially on the resistance region in the second surface, wherein a ratio l/w is greater than or equal to 0.2, where l is the predetermined length of the resistance region and w is the predetermined width of the resistance region.