Liquid crystal device with patterned reactive mesogen alignment layer
First Claim
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1. A liquid crystal device comprising:
- a substrate;
a patterned alignment layer structure on the substrate; and
a liquid crystal layer having a surface in contact with the patterned alignment layer structure, the patterned alignment layer structure having a plurality of alignment regions with different alignment directions,wherein the patterned alignment layer structure comprises a first alignment layer having a first alignment direction, and a second alignment layer disposed over the first alignment layer, and including reactive mesogens which are twisted and which have been cured.
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Abstract
A liquid crystal device has a substrate with first and second alignment layers thereon. The first alignment layer is unidirectionally aligned. The second alignment layer is a layer formed of a cured twisted reactive mesogen composition which is patterned by masking, curing and dissolving uncured regions of the layer so as to expose first alignment regions defined by the layer, and to leave second alignment regions in the layer. The first alignment regions have a different alignment direction from that of the second alignment regions. A liquid crystal layer is provided over the resultant alignment layer structure.
88 Citations
24 Claims
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1. A liquid crystal device comprising:
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a substrate; a patterned alignment layer structure on the substrate; and a liquid crystal layer having a surface in contact with the patterned alignment layer structure, the patterned alignment layer structure having a plurality of alignment regions with different alignment directions, wherein the patterned alignment layer structure comprises a first alignment layer having a first alignment direction, and a second alignment layer disposed over the first alignment layer, and including reactive mesogens which are twisted and which have been cured. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of producing a liquid crystal device, comprising:
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the steps of providing, on a substrate, a patterned alignment layer structure having a plurality of alignment regions with different alignment directions; and providing a liquid crystal layer on an exposed surface of the patterned alignment layer structure, wherein the patterned alignment layer structure is formed by providing a first alignment layer having a first alignment direction on the substrate, providing a layer of a curable reactive mesogen composition having a twist structure on the first alignment layer, and effecting selective regional curing of such composition so as to fix the twist. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification