Journal of Information Display

The Korean Infomation Display Society (한국정보디스플레이학회)
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Integration of solution-processed polymer thin-film transistors for reflective liquid crystal applications

  • Kim, Sung-Jin (College of Electrical and Computer Engineering, Chungbuk National University) ;
  • Kim, Min-Hoi (School of Electrical Engineering, Seoul National University) ;
  • Suh, Min-Chul (Department of Information Display, Kyung Hee University) ;
  • Mo, Yeon-Gon (R&D Center, Samsung Mobile Display, Co., Ltd.) ;
  • Chang, Seung-Wook (R&D Center, Samsung Mobile Display, Co., Ltd.) ;
  • Lee, Sin-Doo (School of Electrical Engineering, Seoul National University)
  • Received : 2011.07.12
  • Accepted : 2011.08.23
  • Published : 2011.12.31
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Abstract

Herein, the integration of solution-processed polymer thin-film transistors (TFTs) that were fabricated using selective wettability through ultraviolet (UV) exposure into a reflective liquid crystal display is demonstrated. From the experimental results of energy-dispersive spectroscopy, the composition of carbon and fluorine enhancing the hydrophobicity in the polymer chains was found to play a critical role in the wetting selectivity upon UV exposure. The polymer TFTs fabricated through the wettability-patterning process exhibited long-term stability and reliability. This wetting-selectivity-based patterning technique will be useful for constructing different types of solution-processed electronic and optoelectronic devices.

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