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公开(公告)号:US5321300A
公开(公告)日:1994-06-14
申请号:US865681
申请日:1992-04-08
申请人: Yoshio Usuda , Hiroaki Itaba , Jumpei Kumagai , Seiji Kaki
发明人: Yoshio Usuda , Hiroaki Itaba , Jumpei Kumagai , Seiji Kaki
IPC分类号: H01L21/82 , H01L23/525 , H01L27/02 , H01L23/48
CPC分类号: H01L23/5258 , H01L2924/0002
摘要: In a laser-broken fuse used in a memory redundancy technique, an aluminum wiring layer is formed on an interlevel insulating film. A portion of the wiring layer is selected to be broken to shut off conduction of the layer. A polysilicon-made heat member is provided in the interlevel insulating film at the place which is underneath the selected portion. The heat member is located on a field insulating film. This heat member generates heat by absorbing energy from a laser beam, and thermal-explodes in a sealed atmosphere so as to break the selected portion.
摘要翻译: 在存储器冗余技术中使用的激光断开熔丝中,在层间绝缘膜上形成铝布线层。 选择布线层的一部分被破坏以切断该层的传导。 在选择部分的下方的位置,在层间绝缘膜上设置多晶硅制成的加热部件。 加热构件位于场绝缘膜上。 该加热构件通过从激光束吸收能量而产生热量,并且在密封的气氛中热爆,从而破坏所选择的部分。