-- Planar liquid crystal-gated-field effect transistor with polymeric dipole control layer and ultrasensitive tactile sensor using the same

摘要

The present invention relates to a liquid crystal-gate-field effect transistor including a dipole control layer and a tactile sensor using the same. The liquid crystal-gate-field effect transistor includes a substrate, a gate electrode formed on the substrate, a source electrode spaced apart from the gate electrode, A drain electrode formed on the substrate so as to be spaced apart from the source electrode, a channel layer formed on the substrate so as to cover the source electrode and the drain electrode, and electrically connecting the source electrode and the drain electrode, A liquid crystal layer formed to connect the gate electrode and the channel layer to each other, and a dipole control layer interposed between the liquid crystal layer and the channel layer to minimize induction of charge generation in the channel layer by the liquid crystal layer. According to the present invention, by applying a polymer material having a low dielectric constant to a structure of a conventional liquid crystal-gate-field effect transistor, leakage of drain current through the channel layer at a '0' gate voltage state is remarkably reduced, It is possible to simultaneously provide a function of a tactile sensor with a significantly improved sensing sensitivity.