会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Stepped main pole for perpendicular write heads in hard disk drives and method of making same
    • 用于硬盘驱动器中的垂直写入头的步进主极及其制造方法
    • US08233234B2
    • 2012-07-31
    • US12342647
    • 2008-12-23
    • Wen-Chien D. HsiaoMing JiangSue S. ZhangYi Zheng
    • Wen-Chien D. HsiaoMing JiangSue S. ZhangYi Zheng
    • G11B5/127H01F10/08H01L43/12
    • G11B5/3116G11B5/1278G11B5/3163Y10T156/10Y10T428/1171Y10T428/1186
    • A stepped main pole for a perpendicular write head and methods of making the stepped main pole. The stepped main pole has a main pole tip and a base portion. The main pole tip has a surface that forms part of the ABS and a first thickness. The base portion extends from the main pole tip and has a thickness that varies from the first thickness to a second thickness to form a slanted surface with an apex angle adjacent the main pole tip. By placing the base portion away from the ABS and providing a thickness that increases in a direction away from the ABS, the stepped pole can provide the necessary magnetic flux for writing, while avoiding undesired leakage and fringing. To form embodiments of the stepped main pole of the invention, a fluorine-based reactive ion etch (RIE) may be used. By using an RIE to define the stepped main pole, the apex angle can be better controlled and tight edge control can be achieved.
    • 用于垂直写头的梯级主极和制作阶梯式主极的方法。 阶梯式主极具有主极尖和基部。 主极尖具有形成ABS的一部分的表面和第一厚度。 基部从主极尖延伸,并且具有从第一厚度变化到第二厚度的厚度,以形成邻近主极尖的顶角的倾斜表面。 通过将基座部分远离ABS并且提供沿离开ABS的方向增加的厚度,台阶极可以提供必要的写入磁通量,同时避免不期望的泄漏和边缘。 为了形成本发明的阶梯式主极的实施例,可以使用氟基反应离子蚀刻(RIE)。 通过使用RIE来定义阶梯式主极,可以更好地控制顶角,并且可以实现紧密的边缘控制。