发明授权
- 专利标题: Method for making static random-access memory device
- 专利标题(中): 制作静态随机存取存储器的方法
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申请号: US899404申请日: 1986-08-22
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公开(公告)号: US4774203A公开(公告)日: 1988-09-27
- 发明人: Shuji Ikeda , Satoshi Meguro , Kotaro Nishimura , Sho Yamamoto , Nobuyoshi Tanimura
- 申请人: Shuji Ikeda , Satoshi Meguro , Kotaro Nishimura , Sho Yamamoto , Nobuyoshi Tanimura
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX60-237347 19851025; JPX61-92052 19860423
- 主分类号: H01L21/02
- IPC分类号: H01L21/02 ; H01L21/8244 ; H01L27/11 ; H01L21/425 ; H01L21/38
摘要:
A method of making a static random-access memory device or SRAM including a memory cell having a high-resistance load element. The load element is formed from a polysilicon film, and an impurity is introduced into at least a part of the polysilicon film for the purpose of increasing the threshold voltage of a parasitic MISFET formed using the load element as its channel region. Alternatively, the deposition of the polysilicon film is carried out at a relatively high temperature, thereby preventing any increase in the current flowing through the load element, and thus reducing the power dissipation in the SRAM.
公开/授权文献
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