半导体器件的制作方法
申请公布号:CN104716029A
申请号:CN201310681725.7
申请日期:2013.12.12
申请公布日期:2015.06.17
发明人:蒋莉
分类号:H01L21/28(2006.01)I
主分类号:H01L21/28(2006.01)I
代理人:高伟;付伟佳
地址:201203 上海市浦东新区张江路18号
摘要:本发明公开了一种半导体器件的制作方法,所述方法包括:a)提供半导体衬底,所述半导体衬底上形成有钨栅极结构,所述钨栅极结构由层间介电层包围;b)回刻蚀所述钨栅极结构的一部分,以在所述钨栅极结构的上方形成凹槽;c)在所述层间介电层上和所述凹槽内形成帽层,所述帽层填满所述凹槽;d)在所述帽层上形成保护层;以及e)采用化学机械抛光去除所述保护层和所述凹槽以外的帽层。本发明提供的方法通过形成保护层,可以保护帽层,避免在化学机械抛光过程中帽层与钨栅极结构分层。
主权项:一种半导体器件的制作方法,其特征在于,所述方法包括:a)提供半导体衬底,所述半导体衬底上形成有钨栅极结构,所述钨栅极结构由层间介电层包围;b)回刻蚀所述钨栅极结构的一部分,以在所述钨栅极结构的上方形成凹槽;c)在所述层间介电层上和所述凹槽内形成帽层,所述帽层填满所述凹槽;d)在所述帽层上形成保护层;以及e)采用化学机械抛光去除所述保护层和所述凹槽以外的帽层。
Inner ear diagnostic apparatus and method
Antimicrobial personal care compositions
Improved incontinence device and method of use
A colliding stream spray dispensing system with a moldable nozzle
Waterless and solvent hand and skin cleaner
At least three-zone molten metal decomposition process
Apparatus for rotatably connecting optical fibers
Pigmented inks and humectants used therewith
A footwear having a deformable insole suitable for adapting itself to the wearer's foot-sole shape
Improved methods for the diagnosis and treatment of insulin depdende nt diabetes mellitus
Mascara compositions having improved wear and beauty benefits
Cleaning implement having a sprayer nozzle attached to a cleaning head member
Sunscreen with disappearing color indicator
Truncated cbh i promoter from trichoderma reesei and use thereof