发明名称 |
METHOD OF FABRICATING ELECTRO-OPTICAL DEVICES WITH POLYMER-STABILIZED LIQUID CRYSTAL MOLECULES |
摘要 |
In a preparation method, a chiral or cholesteric liquid crystal, a photoreactive monomer, and a photoinitiator are disposed in a liquid crystal cell. A principal surface of the liquid crystal cell is illuminated with ultraviolet light selected to have a non-uniform ultraviolet light intensity profile in the liquid crystal cell. The illuminating cooperates with the photoinitiator to polymerize at least a portion of the photoreactive monomer near the principal surface to generate a polymer network having a density corresponding to the non-uniform ultraviolet light intensity profile. The polymer network biases the liquid crystal toward a selected helical alignment direction. In some embodiments, the illuminating includes illuminating with first and second ultraviolet light intensity profiles to produce surface and volume polymer network components.
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申请公布号 |
US2009152772(A1) |
申请公布日期 |
2009.06.18 |
申请号 |
US20090392389 |
申请日期 |
2009.02.25 |
申请人 |
KENT STATE UNIVERSITY AND LACHEZAR KOMITOV |
发明人 |
KOMITOV LACHEZAR;CHIEN LIANG-CHY;KIM SANG HWA |
分类号 |
B29C67/00;G02F1/1333;G02F1/137 |
主分类号 |
B29C67/00 |
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