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    • 56. 发明授权
    • U-gate transistors and methods of fabrication
    • U型栅极晶体管及其制造方法
    • US07071064B2
    • 2006-07-04
    • US10949994
    • 2004-09-23
    • Brian DoyleSurinder SinghUday ShahJustin BraskRobert Chau
    • Brian DoyleSurinder SinghUday ShahJustin BraskRobert Chau
    • H01L21/336H01L29/76
    • H01L29/7853H01L29/66795
    • A process is described for manufacturing of non-planar multi-corner transistor structures. A fin of a semiconductor material having a mask on a top surface of the fin is formed on a first insulating layer. A second insulating layer is formed on the fin exposing a top surface of the mask, wherein a protection layer is deposited between the fin and the second insulating layer. Next, the mask is removed and spacers are formed on the fin adjacent to the protection layer. A recess having a bottom and opposing sidewalls is formed in the fin. A gate dielectric layer and a gate electrode are formed on the top surface, the opposing sidewalls of the fin and on the bottom and on the opposing sidewalls of the recess in the fin. A source region and a drain region are formed in the fin at the opposite sides of the gate electrode.
    • 描述了用于制造非平面多角晶体管结构的工艺。 在第一绝缘层上形成具有在鳍的顶表面上的掩模的半导体材料的鳍。 在翅片上形成第二绝缘层,露出掩模的顶表面,其中保护层沉积在散热片和第二绝缘层之间。 接下来,去除掩模,并且在与保护层相邻的翅片上形成间隔物。 在翅片中形成具有底部和相对侧壁的凹部。 栅极电介质层和栅电极形成在翅片的顶表面,翅片的相对侧壁和底部上以及凹槽的相对侧壁上。 源极区域和漏极区域形成在栅极的相对侧的鳍片中。