发明授权
US07851375B2 Alkaline etchant for controlling surface roughness of semiconductor wafer
有权
用于控制半导体晶片表面粗糙度的碱性蚀刻剂
- 专利标题: Alkaline etchant for controlling surface roughness of semiconductor wafer
- 专利标题(中): 用于控制半导体晶片表面粗糙度的碱性蚀刻剂
-
申请号: US10599576申请日: 2005-03-25
-
公开(公告)号: US07851375B2公开(公告)日: 2010-12-14
- 发明人: Sakae Koyata , Kazushige Takaishi
- 申请人: Sakae Koyata , Kazushige Takaishi
- 申请人地址: JP Tokyo
- 专利权人: Sumco Corporation
- 当前专利权人: Sumco Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Greenblum & Bernstein, P.L.C.
- 优先权: JP2004-109870 20040402
- 国际申请: PCT/JP2005/005527 WO 20050325
- 国际公布: WO2005/098921 WO 20051020
- 主分类号: H01L21/302
- IPC分类号: H01L21/302
摘要:
An alkali etchant for controlling surface roughness of a semiconductor wafer, which is a sodium hydroxide solution or a potassium hydroxide solution having a weight concentration of 55 wt % to 70 wt %.