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Application for Micro-electronics of Polymer/(Liquid Crystal) Hybrid Thin Films

聚合物/（液晶）混合薄膜在微电子领域的应用

基本信息

批准号：
63850182
负责人：
KAJIYAMA Tisato
金额：
$ 3.26万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

项目摘要

(1) Preparation and Aggregation Structure of Polymer/(Liquid Crystal) Hybrid Thin Films Polymer/(liquid crystal ;(LC)) hybrid thin films composed of amorphous polymers and cyanobiphenyl type LCs were prepared by casting from a mixture solution. It was clear from the morphological observation and the thermal measurement that the LC phase formed a continuous phase in three dimensional network structure of the matrix polymer. The size of LC domain was controlled by the kinetic parameters during preparation process.(2) Electro-optical Effect of Polymer/LC Hybrid Thin Films When the polymer/LC composite formed a mutual interpenetrating structure, the hybrid thin film showed remarkable light scattering. A reversible (light scattering)-(light transmission) switching was observed under off-on applied electric field, respectively. It was newly proposed that a spatial distortion of the LC directors is required to exhibit a strong light scattering state. The dielectric analysis for the hybrid thin film revealed that the light switching speed was dependent on the magnitudes of dielectric constant and electric conductivity of the matrix polymer. The response characteristics of light switching of the hybrid thin film was successfully unproved on the basis of electric properties of the hybrid thin film. The polymer/LC hybrid thin film has unique advantages as electro-optical devices in comparison with a twisted-nematic display with respect to: 1)bright display, 2)wide viewing cone angle, 3)fast decay response, 4)large area and 5)flexible.

(1)聚合物/（液晶）杂化薄膜的制备及聚集态结构研究采用流延法制备了由非晶态聚合物和氰基联苯型液晶组成的聚合物/（液晶;（LC））杂化薄膜。从形态学观察和热测量中可以清楚地看出，LC相在基体聚合物的三维网络结构中形成连续相。在制备过程中，液晶畴的大小受动力学参数的控制。(2)聚合物/液晶杂化薄膜的电光效应当聚合物/液晶复合材料形成相互贯穿的结构时，杂化薄膜表现出显著的光散射。观察到了一个可逆的（光散射）（光透射）开关下，分别施加电场。最近有人提出，液晶指向矢的空间畸变需要表现出强的光散射状态。混合薄膜的介电分析表明，光开关速度依赖于基质聚合物的介电常数和电导率的大小。基于杂化薄膜的电学特性，成功地改善了杂化薄膜的光开关响应特性。与扭曲向列显示器相比，聚合物/LC混合薄膜作为电光器件具有独特的优势：1）明亮的显示，2）宽视角锥角，3）快速衰减响应，4）大面积和5）柔性。