ORGANIC THIN FILM TRANSISTOR, ORGANIC COMPOSITE ELECTRONIC ELEMENT, METHOD FOR MANUFACTURING SUCH TRANSISTOR AND ELEMENT, AND DISPLAY DEVICE AND MEMORY

摘要

An organic thin film transistor is provided with a gate electrode (18), a gate insulating film (17), an organic semiconductor film (16), a drain electrode (14) and a source electrode (15) on a substrate (11). The gate insulating film (17) has a double layer structure of a low dielectric constant film (17a) and a ferroelectric film (17b). The low dielectric constant film (17a) is arranged between the ferroelectric film (17b) and the organic semiconductor film (16), and the low dielectric constant film (17a) includes an organic polymeric compound which does not have a functional group that has an unshared electron pair nor p electron coupling within the molecular structure.