发明名称 |
Semiconductor memory device capable of performing stable operation for noise while preventing increase in chip area |
摘要 |
A power supply circuit and an oscillation circuit or the like of noise generation sources are concentrated, and the periphery thereof is surrounded by a guard ring. Guard ring is provided to have bonding pads at least partially thereon. Guard ring is effectively provided utilizing the region below bonding pads, so that effective noise reduction is achieved while preventing increase in chip area.
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申请公布号 |
US6337506(B2) |
申请公布日期 |
2002.01.08 |
申请号 |
US19980116887 |
申请日期 |
1998.07.16 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
MORISHITA FUKASHI;AMANO TERUHIKO;ARIMOTO KAZUTAMI;TANIZAKI TETSUSHI;FUJINO TAKESHI;TSURUDA TAKAHIRO;KINOSHITA MITSUYA;KOBAYASHI MAKO |
分类号 |
G11C11/401;G11C5/14;H01L21/761;H01L21/8242;H01L23/552;H01L23/58;H01L27/02;H01L27/092;H01L27/10;H01L27/108;(IPC1-7):H01L29/00 |
主分类号 |
G11C11/401 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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