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    • 32. 发明申请
    • CMOS process with Si gates for nFETs and SiGe gates for pFETs
    • 用于nFET的Si栅极的CMOS工艺和用于pFET的SiGe栅极
    • US20070235759A1
    • 2007-10-11
    • US11401672
    • 2006-04-11
    • William HensonYaocheng LiuAlexander ReznicekKern RimDevendra Sadana
    • William HensonYaocheng LiuAlexander ReznicekKern RimDevendra Sadana
    • H01L31/00
    • H01L21/2807H01L21/823842
    • An integration scheme for providing Si gates for nFET devices and SiGe gates for pFET devices on the same semiconductor substrate is provided. The integration scheme includes first providing a material stack comprising, from bottom to top, a gate dielectric, a Si film, and a hard mask on a surface of a semiconductor substrate that includes at least one nFET device region and at least one pFET device region. Next, the hard mask is selectively removed from the material stack in the at least one pFET device region thereby exposing the Si film. The exposed Si film is then converted into a SiGe film and thereafter at least one nFET device is formed in the least one nFET device region and at least one pFET device is formed in the at least one pFET device region. In accordance with the present invention, the least one nFET device includes a Si gate and the at least one pFET includes a SiGe gate.
    • 提供了用于在同一半导体衬底上为pFET器件提供nFET器件的Si栅极和SiGe栅极的集成方案。 该集成方案包括首先提供材料堆叠,其从底部到顶部包括在半导体衬底的表面上的栅极电介质,Si膜和硬掩模,其包括至少一个nFET器件区域和至少一个pFET器件区域 。 接下来,将硬掩模从至少一个pFET器件区域中的材料堆叠中选择性地去除,从而暴露Si膜。 暴露的Si膜然后被转换成SiGe膜,此后在至少一个nFET器件区域中形成至少一个nFET器件,并且在至少一个pFET器件区域中形成至少一个pFET器件。 根据本发明,至少一个nFET器件包括Si栅极,并且至少一个pFET包括SiGe栅极。
    • 37. 发明申请
    • Semiconductor device and method of fabricating the same
    • 半导体装置及其制造方法
    • US20060138555A1
    • 2006-06-29
    • US11269543
    • 2005-11-09
    • Kiyotaka Miyano
    • Kiyotaka Miyano
    • H01L29/76H01L21/8238
    • H01L21/2807H01L21/823842H01L21/823857H01L29/49H01L29/665
    • According to one aspect of the invention, there is provided a semiconductor device fabrication method comprising: forming a gate insulating film on a semiconductor substrate; forming a film containing a predetermined semiconductor material and germanium on the gate insulating film; oxidizing the film to form a first film having a germanium concentration higher than that of the film and a film thickness smaller than that of the film on the gate insulating film, and form an oxide film on the first film; removing the oxide film; forming, on the first film, a second film containing the semiconductor material and having a germanium concentration lower than that of the first film; forming a gate electrode by etching the second and first films; and forming a source region and drain region by ion-implanting a predetermined impurity by using the gate electrode as a mask.
    • 根据本发明的一个方面,提供一种半导体器件制造方法,包括:在半导体衬底上形成栅极绝缘膜; 在所述栅极绝缘膜上形成含有预定的半导体材料和锗的膜; 氧化膜以形成锗浓度高于膜的锗浓度并且膜厚小于栅极绝缘膜上的膜的膜厚度,并在第一膜上形成氧化物膜; 去除氧化膜; 在第一膜上形成含有半导体材料并且锗浓度低于第一膜的第二膜的第二膜; 通过蚀刻第二和第一膜形成栅电极; 以及通过使用栅极电极作为掩模,通过离子注入预定杂质来形成源区和漏区。