发明名称 Method for fabricating a segmented AMG EPROM where only every fourth bit line contacts a select transistor in a row of segment select transistors
摘要 The current driven by the segment select transistors of an alternate-metal, virtual-ground (AMG) electrically programmable read-only-memory (EPROM), is increased by eliminating the even numbered segment select transistors in every other row of segment select transistors, and the odd numbered segment select transistors in the remaining rows, and by changing the current path through the segment so that the current flows from a segment select transistor in one row of segment select transistors to a segment select transistor in an adjacent row of transistors. By eliminating every other segment select transistor in each row of transistors, the maximum pitch of the segment select transistors can be substantially increased, thereby providing the required programming current, while at the same time maintaining the required isolation between adjacent segment select transistors.
申请公布号 US5460990(A) 申请公布日期 1995.10.24
申请号 US19940285650 申请日期 1994.08.03
申请人 NATIONAL SEMICONDUCTOR CORPORATION 发明人 BERGEMONT, ALBERT M.
分类号 G11C16/04;H01L21/8247;H01L27/115;(IPC1-7):H01L21/824 主分类号 G11C16/04
代理机构 代理人
主权项
地址