发明名称 |
METHOD OF PRODUCING A LIQUID CRYSTAL MATERIAL THAT REFLECTS MORE THAN 50% OF NON-POLARISED INCIDENT LIGHT |
摘要 |
The invention relates to a method of producing a liquid crystal material. The inventive method is characterised in that it comprises the following steps consisting in: applying a first treatment to a liquid crystal mixture having a helical structure comprising a first non-photoreactive liquid crystal (A) and a second photoreactive liquid crystal (B), said first treatment modifying a handedness of the helix of the mixture; and applying a second treatment to the mixture such that the second liquid crystal (B) forms a polymer network, said second treatment being performed during all or part of the first treatment such that the liquid crystal material retains a memory of the modifications to the helix and the entire volume of the material has both a right-handed and left-handed helical structure. The invention also relates to a liquid crystal device comprising a liquid crystal material consisting of at least one liquid crystal having a helical structure, which is characterised in that the entire volume of the material has both a right-handed and left-handed helical structure, such that the device has a reflection rate of more than 50%. |
申请公布号 |
EP1922385(A1) |
申请公布日期 |
2008.05.21 |
申请号 |
EP20060793128 |
申请日期 |
2006.08.31 |
申请人 |
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) ETABLISSEMENT PUBLIC A CARACTERE SCIENTIFIQUE ET TECHNOLOGIQUE |
发明人 |
MITOV, MICHEL;DESSAUD, NATHALIE |
分类号 |
C09K19/02;C09K19/38;G02F1/133 |
主分类号 |
C09K19/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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