Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Fabrication of Organic IC based on Pentacene TFTs on Plastic Substrate

플라스틱 기판에 펜타센 유기박막트랜지스터를 이용한 집적회로 제작

  • Xu, Yong-Xian (Media Device Lab, Dong-A University) ;
  • Hwang, Sung-Beom (Subdivision of Information Communication, Kyungnam College of Information & Technology) ;
  • Song, Chung-Kun (Dept. of Electronics Eng., Dong-A University)
  • 허영헌 (동아대학교 미디어디바이스연구센터) ;
  • 황성범 (경남정보대학교 정보통신계열) ;
  • 송정근 (동아대학교 전자공학과)
  • Published : 2007.11.25
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Abstract

In this article, the organic integrated circuits such as inverter, ring oscillator, NAND and NOR gates, and rectifier have been fabricated on PEN substrate by using pentacene TFTs, The OTFTs used bottom contact structure and produced the average mobility of 0.26 $cm^2/V.sec$ and on/off current ratio of $10^5$. All circuits successfully worked as the simulation results. Especially, the rectifier was able to operate up to 1 MHz input AC signals, and ring oscillator exhibited oscillation frequency of 1MHz at 40 V. Based on the results of organic integrated circuits we could confirm the possibility of the low cost RFID tags and flexible display with OTFTs.

본 연구에서는 하부전극 구조 펜타센 유기박막트랜지스터를 이용하여 플라스틱 기판에 인버터, 링 발진기, NAND & NOR 논리게이트, 정류기 등 간단한 집적회로를 제작하고 그 특성을 관찰하였다. 제작된 유기박막트랜지스터 소자의 평균 전하이동도는 0.26 $cm^2/V.sec$, 전류점멸비는 $10^5$로 나타났으며 인버터와 NAND, NOR 논리게이트는 입력에 대해 정확한 논리출력값을 출력하였다. 전파 정류기는 1MHz의 AC 입력신호에 대해 정류효과를 나타냈으며 링 발진기는 DC 40V에서 1MHz의 발진특성을 보였다. 이와 같이 유기박막트랜지스터를 이용한 집적회로를 제작하고 특성을 분석함으로써 현재 관심이 되고 있는 초저가 RFID tag, Flexible Display 구동회로 등에 유기박막트랜지스터를 적용할 수 있는 가능성을 확인하였다.

Keywords

References

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