公开(公告)号：US07709310B2

公开(公告)日：2010-05-04

申请号：US12003559

申请日：2007-12-28

申请人： Kozo Markiyama ,  Naoya Ikechi ,  Takahiro Tan

发明人： Kozo Markiyama ,  Naoya Ikechi ,  Takahiro Tan

IPC分类号： H01L21/28 ,  H01L21/44 ,  H01L21/302 ,  H01L21/338

CPC分类号： H01L21/0274 ,  H01L21/28114 ,  H01L21/28264 ,  H01L21/28587 ,  H01L29/42316 ,  H01L29/42376 ,  H01L29/517 ,  H01L29/66462 ,  H01L29/66871 ,  H01L29/78 ,  Y10S430/143 ,  Y10S438/949 ,  Y10S438/95 ,  Y10S438/951

摘要： A semiconductor device has: a semiconductor substrate having a pair of current input/output regions via which current flows; an insulating film formed on the semiconductor substrate and having a gate electrode opening; and a mushroom gate electrode structure formed on the semiconductor substrate via the gate electrode opening, the mushroom gate electrode structure having a stem and a head formed on the stem, the stem having a limited size on the semiconductor substrate along a current direction and having a forward taper shape upwardly and monotonically increasing the size along the current direction, the head having a size expanded stepwise along the current direction, and the stem contacting the semiconductor substrate in the gate electrode opening and riding the insulating film near at a position of at least one of opposite ends of the stem along the current direction.

摘要翻译： 半导体器件具有：半导体衬底，具有电流流过的一对电流输入/输出区域; 形成在所述半导体基板上并具有栅电极开口的绝缘膜; 以及通过所述栅电极开口形成在所述半导体基板上的蘑菇栅极电极结构，所述蘑菇栅电极结构具有杆和形成在所述杆上的头部，所述杆在所述半导体衬底上沿着电流方向具有有限的尺寸，并且具有 向前锥形形状向上并沿着电流方向单调地增加尺寸，头部具有沿着电流方向逐步扩大的尺寸，并且杆在栅极电极开口中接触半导体衬底并且在至少一个位置附近骑绝缘膜 杆的相对端之一沿着当前方向。