Process for producing liquid crystal element, and liquid crystal element
AssigneeAsahi Glass Company, Limited
InventorsYuji Yamamoto, Yuriko Kaida, Ryohei Koguchi, Hiroshi Sakamoto
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Abstract
In a process for producing a liquid crystal element comprising an alignment-treated substrate and a layer of polymer liquid crystal having a pattern, mesogenic groups in cross-linkable polymer liquid crystal are aligned, and the cross-linkable polymer liquid crystal is cross-linked while the mold is pressed against the layer of cross-linkable polymer liquid crystal, at a temperature higher than the glass transition temperature of the cross-linkable polymer liquid crystal and lower than the clearing point temperature of the cross-linkable polymer liquid crystal.
Claims8
A process for producing a liquid crystal element comprising an alignment-treated substrate and a layer of polymer liquid crystal having a pattern, which comprises:
- a step of forming a layer of cross-linkable polymer liquid crystal on the alignment-treated substrate,
- a step of aligning mesogenic groups in the cross-linkable polymer liquid crystal,
- a step of pressing a mold having a reverse pattern of a pattern to be imparted to the layer of polymer liquid crystal, against the layer of cross-linkable polymer liquid crystal, at a temperature higher than the glass transition temperature of the cross-linkable polymer liquid crystal and lower than the clearing point temperature of the cross-linkable polymer liquid crystal,
- a step of cross-linking the cross-linkable polymer liquid crystal while the mold is pressed against the layer of cross-linkable polymer liquid crystal, to form a cured product, and
- a step of removing the mold from the cured product.
Dependencies are inferred from the claim text.