| 摘要 |
<p>A field-effect transistor (FET element) wherein a pi-conjugated polymer film that serves as a semiconductor layer of the element is obtained by first preparing a pi-conjugated polymer precursor film by the use of a pi-conjugated polymer precursor soluble in a solvent and then converting the precursor film into the pi-conjugated film. A liquid crystal display device is obtained by using the FET elements as active drive elements. A large number of the FET elements can be fabricated simultaneously on a substrate having a large area at a low cost and stably operate, thus making it possible to greatly vary the current between the source and the drain by the gate voltage.</p> |
