高分子穩定型OCB雙穩態液晶顯示元件之研製及光電特性研究

Fabrication of a polymer stabilized OCB cell and study on its electro-optical properties

林冠輝(Guan-Huei Lin)

指導教授 ： 陳殿榮

共同指導教授 ： 吳俊傑

國立臺北科技大學/電資學院/光電工程系研究所/碩士(2014年)

摘要

本研究目的在於使用不同方法製作出高分子穩定型OCB雙穩態液晶顯示元件並研究其光電特性。利用光可聚合的高分子單體材料，以固定比例混入雙頻液晶，控制UV曝光時間來改變預傾角，我們利用兩種方法製作出初始態為Left-hand twist (LT)的液晶顯示元件。由於雙頻液晶在不同頻率下介電異向性會改變，使樣品能夠在Left-hand twist(LT)跟Right-hand twist(RT)兩種穩態之間做切換，達到雙穩態的特性。
第一種方法為利用不同頻率的電場作用製作出的雙穩態元件，並討論此種雙穩態元件的光電特性；第二種方法為利用光罩製作出雙區塊是不同預傾角的雙穩態元件，並討論此種雙穩態的光電特性。

關鍵字

雙穩態 ； 雙頻液晶 ； 高分子

並列摘要

The purpose of this study is the methods to make a OCB bistable liquid crystal display and study its electro-optical properties. Mix the monomer, which can be polymerized by UV light, with the dual-frequency liquid crystal in a fixed proportion, and control the UV exposure time of the mixture to increase the liquid crystal pretilt angle. This study adopts two methods to fabricate the polymer stabilized OCB bistable liquid crystal display cells which are initial Left-hand twist state(LT). Due to the dual-frequency liquid crystal with dielectric anisotropy at different frequencies, the LC cell can be switched between left-hand twist(LT) and righ-hand twist(RT) to achieve bistability.
The first method is using electric fields with different frequencies to make a bistable cell and discussing the electro-optical properties of the bistable LC cell. The second method is using mask to make a bistable cell with double blocks of different pretilt angles and discussing the electro-optical properties.

並列關鍵字

Bistable ； Dual-frequency Liquid Crystal ； Polymer

參考文獻

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