基本信息:
- 专利标题： Semiconductor memory device and method for manufacturing the same
- 申请号：US12929894 申请日：2011-02-23
- 公开(公告)号：US20110147822A1 公开(公告)日：2011-06-23
- 发明人： Kenji Aoyama , Eiji Ito , Masahiro Kiyotoshi , Tadashi Iguchi , Moto Yabuki
- 申请人： Kenji Aoyama , Eiji Ito , Masahiro Kiyotoshi , Tadashi Iguchi , Moto Yabuki
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 优先权： JP2008-044481 20080226
- 主分类号： H01L21/336
- IPC分类号： H01L21/336
摘要：
A semiconductor memory device has a semiconductor substrate, a plurality of word lines formed at predetermined intervals on the semiconductor substrate, each word line having a gate insulating film, a charge storage layer, a first insulating film, and a controlling gate electrode which are stacked in order, and including a metal oxide layer above the level of the gate insulating film, a second insulating film covering a side of the word line and a surface of the semiconductor substrate between the word lines, and having a film thickness of 15 nm or less, and a third insulating film formed between the word lines adjacent to each other such that a region below the level of the metal oxide layer has a cavity.
IPC结构图谱:
| H | 电学 |
| --H01 | 基本电气元件 |
| ----H01L | 半导体器件；其他类目未包含的电固体器件 |
| ------H01L21/00 | 专门适用于制造或处理半导体或固体器件或其部件的方法或设备 |
| --------H01L21/02 | .半导体器件或其部件的制造或处理 |
| ----------H01L21/027 | ..未在H01L21/18或H01L21/34组中包含的为进一步的光刻工艺在半导体之上制作掩膜 |
| ------------H01L21/18 | ...器件有由周期表第Ⅳ族元素或含有/不含有杂质的AⅢBⅤ族化合物构成的半导体，如掺杂材料 |
| --------------H01L21/26 | ....用波或粒子辐射轰击的 |
| ----------------H01L21/335 | .....场效应晶体管 |
| ------------------H01L21/336 | ......带有绝缘栅的 |