Invention Application
- Patent Title: Conductive stud for magnetic recording devices and method of making the same
- Patent Title (中): 磁记录装置的导电螺柱及其制造方法
-
Application No.: US11325897Application Date: 2006-01-04
-
Publication No.: US20060114610A1Publication Date: 2006-06-01
- Inventor: Rainer Krause , Jan Marien , Johannes Paul , Gunther Sandmann , Gerhard Scherb , Hubert Schuy , Stefan Seifried
- Applicant: Rainer Krause , Jan Marien , Johannes Paul , Gunther Sandmann , Gerhard Scherb , Hubert Schuy , Stefan Seifried
- Main IPC: G11B5/60
- IPC: G11B5/60

Abstract:
A magnetic recording device makes use of an “anchored” conductive stud which is securely attached within its surrounding insulator materials. The conductive stud is formed over a conductive layer which is coupled to or part of a read or a write head element of the magnetic recording device. The conductive stud has a top stud portion and a bottom undercut portion formed over the conductive layer. In one illustrated embodiment, the bottom undercut portion has a width that is greater than the width of the top stud portion. Since an insulator is formed around the conductive stud and over its bottom undercut portion, a secure coupling between the conductive stud and the conductive layer is provided. Preferably, the conductive layer is made of copper (Cu), the conductive stud is made of gold (Au), and the insulator is alumina (Al2O3). A seed layer may be formed between the conductive stud and the conductive layer. A method of making the conductive stud using a photolithography process is also disclosed.
Public/Granted literature
- US07336445B2 Conductive stud for magnetic recording devices and method of making the same Public/Granted day:2008-02-26
Information query
IPC分类: