Patent ID: 7441325

Claim:
A method of manufacturing a perpendicular write head comprising: forming a laminate layer; forming a metal layer upon the laminate layer; forming a diamond-like carbon (DLC) layer upon the metal layer; forming a durimide layer upon the diamond-like carbon layer; forming a hard mask layer upon the durimide layer; forming an anti-reflective layer upon the hard mask layer; forming an image resist layer upon the anti-reflective layer; performing a reactive ion milling to transfer a pattern from the image resist layer to the anti-reflective layer, and then to the hard mask layer, and finally to the durimide and the DLC layer, leaving the hard mask layer, the durimide layer and a DLC layer; performing ion milling to remove the hard mask layer; depositing alumina that covers the top and sides of the durimide layer and surrounds the DLC layer and hard mask layer; performing chemical mechanical planarization (CMP) process to remove the alumina deposited on the top and sides of the durimide layer and the durimide layer; and reactive ion etching (RIE) to remove the DLC layer for creating a trench for deposition of trailing shield.