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Three-dimensional memory device having passive devices at a buried source line level and method of making thereof
专利权人:
SANDISK TECHNOLOGIES LLC
发明人:
Shimizu Satoshi,Ogawa Hiroyuki,Kasagi Yasuo,Kitamura Kento
申请号:
US201715843659
公开号:
US9991282(B1)
申请日:
2017.12.15
申请国别(地区):
美国
年份:
2018
代理人:
The Marbury Law Group PLLC
摘要:
A layer stack including a lower semiconductor layer, a lower dielectric layer, and a spacer material layer is formed over a semiconductor substrate, and the spacer material layer is patterned to form spacer line structures. An upper dielectric layer and an upper semiconductor layer are formed, followed by formation of an alternating stack of insulating layers and spacer material layers. Memory stack structures are formed through the alternating stack, the upper semiconductor layer, and the dielectric material layer. The upper semiconductor layer, the upper dielectric layer, and the lower semiconductor layer can be patterned to form a buried source layer and at least one passive device. Each passive device can include a lower semiconductor plate, a dielectric material plate, and an upper semiconductor plate. Each passive device can be a resistor or a capacitor.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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