플렉시블 디스플레이와 집적회로에의 OTFT 응용

OTFT Application to Flexible Displays and Integrated Circuits

  • 김강대 (한국기계연구원(정보장비연구센터)) ;
  • 허영헌 (한국기계연구원(정보장비연구센터)) ;
  • 이명원 (한국기계연구원(정보장비연구센터)) ;
  • 류기성 (한국기계연구원(정보장비연구센터)) ;
  • 송정근 (동아대학교 전자학과)
  • 발행 : 2007.05.30

초록

In this paper we demonstrated the applications of OTFTs (organic thin film transistors) to flexible displays such as AM-EPD (active matrix electrophoretic display) and AM-OLED (active matrix organic light emitting diode), and also to integrated circuits. The OTFTs using pentacene semiconductor layer and PVP gate dielectric and Au S/D electrodes exhibited good performance for AM-EPD with the mobility of $0.59\;cm^{2}/V.sec,$ and with also good uniformity over 2.5" diagonal area. However, it is nor enough for AM-OLED requiring the mobility larger than $1\;cm^{2}/V.sec$ for large area displays. The integrated circuits also worked, producing the operating frequency of 1MHz. We need to develop a fabrication process to reduce parasitic capacitance for high frequency operation.

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