本報告主要的目的在探討不同厚度環氧樹脂系高分子分散液晶膜（PDLC）之形態學及電光性質研究。研究內容是以二種不同當量比的環氧樹脂/熱硬化劑配法，藉由偏光顯微鏡(POM)觀察PDLC膜組成物中液晶相分離形態學，並討論液晶與樹脂基材之間的相容性。而後以五種不同間距膜厚度配上二種不同當量比的環氧樹脂/熱硬化劑之不同加工方式製成之PDLC膜，測量其電光性質(Vth、Toff、Ton)，研究結果發現，以環氧樹脂/熱硬化劑（當量比）為1：1，間距膜厚度為12μm，並以室溫下冷卻所製成之PDLC膜，可獲得較理想的驅動電壓（Vth）及較佳的對比度（C.R.）。因此此顯示膜可應用於電子顯示及光控制元件上。 We study the effects of different film thickness on the electro-optical properties and morphology of liquid crystal droplets. In this study, the phase diagram and POM (Polarized Optical Microscopy) are used to understand the miscibility of liquid crystal and epoxy resin, and the phasing out of the liquid crystal in the film as well. UV/Visible photometer is utilized to measure the electro-optical properties of the PDLC film obtained through the various processes. It is found that the PDLC film remains opaque when uncharged. As the applied voltage is higher than the threshold voltage, the film is turning into clear. In equivalent weight ratio of Epoxy/curing agent being 1/1, film thickness being 12μm and the PDLC prepared by using room temperature cured method has a low threshold voltage and better contrast ratio. This PDLC film can be utilized in making display and optical devices.
