To provide techniques for discriminating combinations of electrodes and organic semiconductors of organic TFTs which are improved in electron injection efficiency and hole injection efficiency, to actualize two kinds of TFTs which are n-channel TFTs and p-channel TFTs, and further to provide complementary organic thin film transistor (organic CTFT) and an organic CTFT array forming desired arbitrary circuit constitution with organic CTFTs.
Only surface modifications of an electrode and an insulating film are selectively changed, without changing TFT materials, by using a mathematical expression values of differences in Fermi energy on a semiconductor-electrode interface and a semiconductor-gate insulator interface to actualize n-type and p-type TFTs. An arbitrary circuit is constituted by connecting all of source electrodes and gate electrodes of p-type channel TFTs and drain electrodes and gate electrodes of n-type channel TFTs, performing processes for the surface modifications, and then disconnecting unnecessary wiring by light irradiation etc.
COPYRIGHT: (C)2009,JPO&INPIT
Arai Yui
Takeo Shiba
Yuji Suwa
| JP2005268721A | ||||
| JP2007157752A | ||||
| JP200771928A |