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
    • 1. 发明申请
    • METHOD OF PRODUCING EPITAXIAL WAFER AND THE EPITAXIAL WAFER
    • 生产外延波浪和外延波形的方法
    • WO2012066761A1
    • 2012-05-24
    • PCT/JP2011/006327
    • 2011-11-11
    • SUMCO CORPORATIONMASUDA, SumihisaNARAHARA, Kazuhiro
    • MASUDA, SumihisaNARAHARA, Kazuhiro
    • H01L21/304H01L21/02H01L21/20
    • H01L21/02021C30B25/186C30B29/06H01L21/02381H01L21/02532H01L21/0262H01L21/02658H01L29/30
    • The present invention provides a method of producing an epitaxial wafer having a highly flat rear surface without polishing top and rear surfaces of the epitaxial wafer after forming an epitaxial film. A method of producing an epitaxial wafer 100 according to the present invention comprises a step of preparing a semiconductor wafer 10 having a beveled portion 11 formed on its end portion, a first surface 12b, a second surface 12a opposite to the first surface 12b, and edges 13b and 13a on both of the first surface12b and the second surface12a, the each edge 13a and 13b is boundary with the beveled portion 11; a step of processing of rolling off an outer peripheral portion 14 of the first surface 12b to form a roll-off region, the outer peripheral portion 14 is extending outward of the wafer from a predetermined position P inner than the position of the edge 13b on the first surface 12b; and a step of forming a first epitaxial film 20 on the second surface 12a.
    • 本发明提供一种制造具有高平坦后表面的外延晶片的方法,而不会在形成外延膜之后抛光外延晶片的顶表面和后表面。 根据本发明的制造外延晶片100的方法包括制备半导体晶片10的步骤,半导体晶片10具有形成在其端部上的斜面部分11,第一表面12b,与第一表面12b相对的第二表面12a,以及 在第一表面12b和第二表面12a上的边缘13b和13a,每个边缘13a和13b与斜面部分11是边界; 处理滚动第一表面12b的外周部分14以形成滚降区域的步骤,外周部分14从比边缘13b的位置内侧的预定位置P向晶片外延伸 第一表面12b; 以及在第二表面12a上形成第一外延膜20的步骤。