发明授权
US07855410B2 Semiconductor memory devices having a floating gate with a projecting portion and methods of forming semiconductor memory devices having a floating gate with a projecting portion
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具有具有突出部分的浮动栅极的半导体存储器件以及形成具有带突出部分的浮动栅极的半导体存储器件的方法
- 专利标题: Semiconductor memory devices having a floating gate with a projecting portion and methods of forming semiconductor memory devices having a floating gate with a projecting portion
- 专利标题(中): 具有具有突出部分的浮动栅极的半导体存储器件以及形成具有带突出部分的浮动栅极的半导体存储器件的方法
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申请号: US12168799申请日: 2008-07-07
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公开(公告)号: US07855410B2公开(公告)日: 2010-12-21
- 发明人: Seung-Jin Yang , Jeong-Uk Han , Yong-Suk Choi , Hyok-Ki Kwon , Bae-Seong Kwon
- 申请人: Seung-Jin Yang , Jeong-Uk Han , Yong-Suk Choi , Hyok-Ki Kwon , Bae-Seong Kwon
- 申请人地址: KR Gyeonggi-do
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Gyeonggi-do
- 代理机构: Myers Bigel Sibley & Sajovec, PA
- 优先权: KR10-2007-0068145 20070706
- 主分类号: H01L29/788
- IPC分类号: H01L29/788
摘要:
According to one embodiment, a semiconductor memory device can be generally characterized as including a gate insulating layer on a semiconductor substrate, a floating gate on the gate insulating layer and a word line disposed on one side of the floating gate. A first side of the floating gate facing the word line may include a projecting portion projecting toward the word line. A tip of the projecting portion may include a corner that extends substantially perpendicularly with respect to a top surface of the semiconductor substrate.
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