本論文研究目的為利用光配向技術發展新式垂直配向模式之液晶元件。此液晶元件利用負型液晶、2種壓克力單體以及光起始劑調配出的垂直配向液晶（Vertical Alignment Liqid Crystal, VALC），經由UV光照射後而產生相分離而具有垂直配向的上下層薄膜，對於一般需塗佈配向劑和摩擦配向的製程省略，為其優點。此外，也探討對於此模式(VA mode)下，液晶分子對不同UV光照射時間下的光穿透度、對比度以及反應時間等光電特性。

The purpose of this study is using photoaligment to develop a method for new type vertical alignment of liquid crystal device. The Vertical Alignment Liqid Crystal (VALC) is achieved by mixing N-typeliquid crystal and two kinds of acrylic monomer and photoinitiator. There are upperand lower bilayer of vertical alignment films by UV irradiation, at which the phase separation is carried out, thus, the advantage is omit from coating alignment agent and rubbing. Beside, in this study, we also characterizes the optical-electro properties of the liquid crystal molecules under VA mode and different UV irradiation time such as transmittance, contrast ratio and response time etc..

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