PLANAR LIQUID CRYSTAL-GATE-FIELD EFFECT TRANSISTOR COMPRISING DIPOLE CONTROL LAYER AND SUPER-SENSITIVITY TACTILE SENSOR USING SAME

摘要

The present invention relates to a liquid crystal-gate-field effect transistor comprising a dipole control layer and a tactile sensor using the same, and comprises: a substrate; a gate electrode formed on the substrate; a source electrode formed on the substrate to be spaced from the gate electrode; a drain electrode formed on the substrate to be spaced from the source electrode; a channel layer formed on the substrate so as to cover the source electrode and the drain electrode, the channel layer electrically connecting the source electrode and the drain electrode; a liquid crystal layer formed on the substrate so as to connect the gate electrode and the channel layer; and a dipole control layer interposed between the liquid crystal layer and the channel layer so as to minimize induction of generation of electric charges in the channel layer by the liquid crystal layer. The present invention, as described above, combines a conventional liquid crystal-gate-field effect transistor structure with a polymer material having a low permittivity such that leakage of drain current through the channel layer, in zero gate voltage state, is substantially reduced, thereby both providing the function of a transistor and providing the function of a tactile sensor having a substantially improved sensing sensitivity.