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Jpn. J. Appl. Phys. 46 (2007) pp. 5230-5232  |Previous Article| |Next Article|  |Table of Contents|
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Brief Communication

Effects of Curing Conditions on Electrooptical Properties of Polymer-Stabilized Liquid Crystal Pi Cells

Chi-Yen Huang, Ri-Xin Fung¹, and Ying-Ging Lin

Graduate Institute of Photonics, National Changhua University of Education, Changhua, Taiwan 500, Republic of China
¹Department of Physics, National Changhua University of Education, Changhua, Taiwan 500, Republic of China

(Received March 12, 2007; accepted April 27, 2007; published online August 6, 2007)

We analyzed conditions for fabricating zero-bias polymer-stabilized liquid crystal (PSLC) pi cells. A high curing voltage effectively aligns LCs and the polymer networks formed perpendicular to the substrate surface after polymerization, making a cell a low dark state and approaching the saturation voltage rapidly. A low curing intensity generates sparse polymer networks, increasing the bending degree of LCs and therefore increasing the effective birefringence and associated bright state of the cell. A high curing voltage and a very low curing intensity are found to be effective in fabricating a zero-bias PSLC pi cell with a high bright state, a low dark state and therefore a steep transmission vs applied voltage (T–V) curve.

URL: http://jjap.jsap.jp/link?JJAP/46/5230/
DOI: 10.1143/JJAP.46.5230
KEYWORDS:liquid crystal, polymer, bend

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