Alignment layer comprising a first and second sublayer
First Claim
1. An alignment layer capable of aligning liquid crystal material, the alignment layer comprising:
- a first sublayer which is a solid organic layer having regions capable of aligning the liquid crystal material in a first alignment; and
a second sublayer having regions capable of aligning the liquid crystal material in a second alignment, the first and the second alignments being different, the second sublayer overlaying the first sublayer and covering in accordance with a pre-determined pattern the first sublayer to provide, at desired locations, second sublayer regions capable of aligning the liquid crystal material and, at desired locations, regions of the underlying first sublayer that are not covered by the second sublayer, wherein the first sublayer is, at an interface of the first and the second sublayers, chemically linked to the second sublayer.
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Abstract
The invention pertains to an alignment layer capable of aligning liquid crystal material, the alignment layer comprising: a first sublayer having regions capable of aligning the liquid crystal material in a first alignment, a second sublayer having regions capable of aligning the liquid crystal material in a second alignment, the first and the second alignment being different, the second sublayer overlaying the first sublayer and covering in accordance with a pre-determined pattern the first sublayer to provide, at desired locations, second sublayer regions capable of aligning the liquid crystal material and, at desired locations, regions of the underlying first sublayer that are not covered by the second sublayer, and to a method of making this alignment layer. The invention further relates to an optical or electro-optical device comprising said alignment layer.
11 Citations
22 Claims
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1. An alignment layer capable of aligning liquid crystal material, the alignment layer comprising:
- a first sublayer which is a solid organic layer having regions capable of aligning the liquid crystal material in a first alignment; and
a second sublayer having regions capable of aligning the liquid crystal material in a second alignment, the first and the second alignments being different, the second sublayer overlaying the first sublayer and covering in accordance with a pre-determined pattern the first sublayer to provide, at desired locations, second sublayer regions capable of aligning the liquid crystal material and, at desired locations, regions of the underlying first sublayer that are not covered by the second sublayer, wherein the first sublayer is, at an interface of the first and the second sublayers, chemically linked to the second sublayer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a first sublayer which is a solid organic layer having regions capable of aligning the liquid crystal material in a first alignment; and
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12. An alignment layer capable of aligning liquid crystal material, the alignment layer comprising:
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a first sublayer having first regions capable of aligning the liquid crystal material in a first alignment, the first regions having been formed by selectively irradiating an unsaturated moiety in said first sublayer to reduce a capability of said first regions to react with a second chemical group; and a second sublayer having second regions capable of aligning the liquid crystal material in a second alignment, the second regions having been formed by reacting said second chemical group with said unsaturated moiety in said first sublayer outside said first regions, the first and the second alignment being different, the second sublayer overlaying the first sublayer and covering in accordance with a pre-determined pattern the first sublayer to provide, at desired locations, second sublayer regions capable of aligning the liquid crystal material and, at desired locations, regions of the underlying first sublayer that are not covered by the second sublayer, wherein the first sublayer is, at an interface of the first and the second sublayers, chemically linked to the second sublayer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification