摘要 |
PURPOSE:To enable an electrical or an optical rewriting, and enable an optical non-destructive reading by mounting the 1st and the 2nd dielectric thin films on the inner side of at least one or the both of electrodes. CONSTITUTION:The floating charge trapping center layer (FTL) 5 is interposed between the electrodes of the liquid crystal device which is formed facing the inner surfaces of a pair of th e electrodes 4, 4'. The 1st dielectric film 5-1 is formed on one or both of the electrodes, followed by forming the charge trapping center layer (TL) 5-2 on the 1st conductor film. The another 2nd dielectric film 5-3 is formed on the TL 5-2 so as to cover the TL 5-2, thereby forming the TL 5-2 or the FTL 5, electrically floating from the electrodes 4, 4' and the liquid crystal 6. And, the FTL 5 and the filled liquid crystal 6 are isolate by the dielectric film 5-3 so as not to directly contact with each other. The FTL 5 has a nonvolatile memory action in an ordinary use state (a state of readout of an information).
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