[14a-A409-1~7] 12.4 Organic light-emitting devices and organic transistors

[14a-A409-2] Low-noise organic biosensing amplifier using reverse-offset printed electrodes

〇Tomoharu Kimura¹, Takafumi Uemura², Yayoi Shibafuji¹, Takeshi Suyama¹, Hiroyuki Ueno¹, Tsuyoshi Sekitani² (1.SCREEN Holdings, 2.ISIR Osaka Univ.)

Keywords:organic thin-film transistor, reverse-offset printing, electroencephalogram

We developed low-noise organic amplifier which can detect small-voltage biosignals with the electrodes printed by flat stamp parallel printing (FSPP) method, which we developed. FSPP is one of reverse-offset printing methods, and can fabricate fine, thin-film and flat electrodes, which is suitable to organic thin-film transistors (OTFTs). We reduced the transistor noise of OTFTs by optimization of device structures and process conditions. We successfully detected and amplified a 10-μV signal, which is comparable to electroencephalogram, in the pseudo-CMOS amplifier using printed electrods.