发明名称 |
NONVOLATILE SEMICONDUCTOR MEMORY DEVICE AND ITS MANUFACTURE |
摘要 |
PROBLEM TO BE SOLVED: To reduce manufacturing cost by enhancing a common feature of a structure involving a memory transistor and a memory peripheral circuit. SOLUTION: A plurality of insulated gate transistors consisting the memory peripheral circuit and the memory transistor (formation region 10c) are formed on a single semiconductor substrate 10. The memory transistor is formed between the substrate 10 and a gate electrode 25 provided with a plurality of stacked films (charge storage film 14m) comprising therein a discrete charge storage means (charge trap) which is charged when storing or eliminating information. Among the plurality of insulated gate transistors, at least a gate insulating film 14 which is formed between the substrate 10 and a gate electrode 23 or 24 and belongs to a high voltage transistor (formation region 10b) having the highest voltage in the memory peripheral circuit, has the same structure (three layers 14a-14c) as the charge storage film 14m. COPYRIGHT: (C)2004,JPO
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申请公布号 |
JP2004047889(A) |
申请公布日期 |
2004.02.12 |
申请号 |
JP20020205714 |
申请日期 |
2002.07.15 |
申请人 |
SONY CORP |
发明人 |
KOBAYASHI TOSHIO;NOMOTO KAZUMASA;TOMIYA HIDETO |
分类号 |
H01L27/092;H01L21/8234;H01L21/8238;H01L21/8247;H01L27/088;H01L27/10;H01L27/115;H01L29/788;H01L29/792;(IPC1-7):H01L21/824;H01L21/823 |
主分类号 |
H01L27/092 |
代理机构 |
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