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Enhanced Adhesion and Transmittance Uniformity in Laminated Polymer-Dispersed Liquid Crystal Films 원문보기

Journal of the Optical Society of Korea, v.18 no.6, 2014년, pp.753 - 761  

Yoo, Seong-Hyeon (Department of Sensor and Display Engineering, Kyungpook National University) ,  Park, Min-Kyu (School of Electronics Engineering, Kyungpook National University) ,  Park, Ji-Sub (School of Electronics Engineering, Kyungpook National University) ,  Kim, Hak-Rin (Department of Sensor and Display Engineering, Kyungpook National University)

Abstract ▼ AI-Helper 아이콘AI-Helper

We propose a two-step UV irradiation procedure to fabricate polymer-dispersed liquid crystal (PDLC) films by lamination. During the first UV treatment, before lamination, the UV-curable monomers coated on one film substrate are solidified through photo-polymerization as the phase separation between ...

주제어

#Liquid crystals   #Polymer-dispersed liquid crystals   #Flexible displays   #Lamination process   #Phase separation  

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제안 방법

  • We have presented a two-step UV irradiation method to prepare laminated PDLC films. In the proposed method, a LC/prepolymer mixture and an adhesion enhancement layer are respectively coated onto the bottom and top ITO films. A first UV treatment is used to solidify these two layers, and to phase-separate the LC droplets in the PDLC layer on the bottom ITO film.
  • Peel-off experiments were used to test the adhesion strength of the laminated PDLC films as a function of the first step of UV irradiation conditions, and the effects of bending were also investigated [31, 32]. The uniformity of the gap between the ITO films, as maintained by the UV-solidified adhesion-enhancement and PDLC layers, was analyzed by measuring the uniformity of light transmittance across the samples under different applied voltages.
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