A semiconductor nonvolatile memory device capable of lowering an operation voltage such as an erase voltage and capable of lowering costs and a method of production of the same, wherein a thin film transistor acting as the memory transistor is formed with a semiconductor layer 31b having a channel formation...http://www.google.se/patents/US6005270?utm_source=gb-gplus-sharePatent US6005270 - Semiconductor nonvolatile memory device and method of production of same
