한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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The Injection of PDLC Solution Mixture in a Reduced Pressure

  • Kim, Kang-Pil (Display & Nano Devices Laboratory, Daegu-Gyeongbuk Institute of Science and Technology(DGIST)) ;
  • Yang, Kee-Jeong (Display & Nano Devices Laboratory, Daegu-Gyeongbuk Institute of Science and Technology(DGIST)) ;
  • Kim, Dae-Hwan (Display & Nano Devices Laboratory, Daegu-Gyeongbuk Institute of Science and Technology(DGIST)) ;
  • Choi, Byeong-Dae (Display & Nano Devices Laboratory, Daegu-Gyeongbuk Institute of Science and Technology(DGIST))
  • Published : 2007.08.27
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Abstract

Polymer dispersed liquid crystal (PDLC) films consist of micro-droplets of liquid crystals dispersed in a polymer matrix. To make wide area PDLC filled devices, it is necessary to develop reliable method of vacuum injection of PDLC solution instead of the capillary injection. However, well-known 2-ethylhexylacrylate (EHA), main element of a prepolymer, exhibits the volatility problems, when the PDLC solution is placed under the low pressure. In this study, we developed the vacuum injection process to fill a wide area cell. Experimental results indicate that the $V_{90}$(turn-on voltage) of the PDLC cell made by a vacuum injection method are lower than that of the PDLC cell made by a capillary injection method.

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