SEMICONDUCTOR MEMORY DEVICE, DISPLAY DEVICE AND PORTABLE ELECTRONIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor memory device and portable electronic equipment provided with a nonvolatile memory element which can be finely structured without any difficulty.

SOLUTION: The semiconductor memory device is provided with a memory cell array 21 in which a plurality of memory elements are arranged and a program verify-circuit 30. The memory elements 1, 33 are provided with a gate electrode 104 formed on a semiconductor layer 102 through a gate insulation film 103, a channel region arranged under the gate electrode 104, a diffusion region 107a arranged at both sides of the channel region and having a channel region and a reverse conduction type, and a memory function object 109 having a function holding electric charges formed at the both sides of the gate electrode 104. A program load register 32 of the program verify-circuit 30 eliminates a state in which write-in is required for a memory element 33 verified initially as that it is written correctly.

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