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US06670661B2 Ferroelectric memory cell with diode structure to protect the ferroelectric during read operations 失效
具有二极管结构的铁电存储器单元,用于在读取操作期间保护铁电体

  • Patent Title: Ferroelectric memory cell with diode structure to protect the ferroelectric during read operations
  • Patent Title (中): 具有二极管结构的铁电存储器单元,用于在读取操作期间保护铁电体
  • Application No.: US10046123
    Application Date: 2002-01-07
  • Publication No.: US06670661B2
    Publication Date: 2003-12-30
  • Inventor: Thomas Peter HanederHarald Bachhofer
  • Applicant: Thomas Peter HanederHarald Bachhofer
  • Priority: DE19931124 19990706
  • Main IPC: H01L2968
  • IPC: H01L2968
Ferroelectric memory cell with diode structure to protect the ferroelectric during read operations
Abstract:
A memory cell configuration includes, as a memory cell, a ferroelectric transistor having a first gate intermediate layer and a first gate electrode between source/drain regions at the surface of a semiconductor substrate. The first gate intermediate layer contains at least one ferroelectric layer. Beside the first gate intermediate layer, a second gate intermediate layer and a second gate electrode are disposed between the source/drain regions, the second gate intermediate layer containing a dielectric layer. The first gate electrode and the second gate electrode are connected to one another through a diode structure. Strip-type doped well regions are provided in the semiconductor substrate, which well regions run between the source/drain regions of the respective ferroelectric transistor.
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