Nonvolatile memory device
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United States of America Patent
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Feb 13, 2018
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app pub date -
May 11, 2017
filing date -
Feb 19, 2016
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Abstract
A nonvolatile memory cell includes a first-conductivity-type silicon substrate, a metal layer formed in a surface of the first-conductivity-type silicon substrate, a second-conductivity-type diffusion layer formed in the surface of the first-conductivity-type silicon substrate and spaced apart from the metal layer, an insulating film disposed on the surface of the first-conductivity-type silicon substrate between the metal layer and the second-conductivity-type diffusion layer, a gate electrode disposed on the insulating film between the metal layer and the second-conductivity-type diffusion layer, and a sidewall disposed at a same side of the gate electrode as the metal layer and situated between the gate electrode and the metal layer, the sidewall being made of insulating material.
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