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US 7,068,344 B2Granted
Cholesteric liquid crystal optical bodies and methods of manufacture and use
Assignee3M Innovative Properties Company
InventorsRichard J. Pokorny, Marc D. Radcliffe, Steven D. Solomonson, Terence D. Spawn
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Abstract
The method of making an optical body includes coating a mixture that includes a plurality of cholesteric liquid crystal compositions, and a solvent on a substrate. Each cholesteric liquid crystal composition is different. A plurality of layers is formed on the substrate. Each layer includes a majority of one of the cholesteric liquid crystal compositions.
Claims26
A method of making an optical body, the method comprising steps of:
- coating a mixture comprising a first cholesteric liquid crystal composition, a second cholesteric liquid crystal composition, and a solvent on a substrate;
- wherein the first cholesteric liquid crystal composition is different than the second cholesteric liquid crystal composition;
- and
- forming from the mixture a first layer disposed on the substrate and a second layer disposed on the first layer;
- wherein the first layer comprises a majority of the first cholesteric liquid crystal composition and the second layer comprises a majority of the second cholesteric liquid crystal composition.
2 more elements
A method of making an optical body, the method comprising steps of:
- coating a mixture comprising a first cholesteric liquid crystal composition, a second cholesteric liquid crystal composition, and a solvent on a substrate;
- wherein the first cholesteric liquid crystal composition comprises a cholesteric liquid crystal polymer and the second cholesteric liquid crystal composition comprises a cholesteric liquid crystal monomer;
- and
- forming from the mixture a first layer disposed on the substrate and a second layer disposed on the first layer;
- wherein the first layer comprises a majority of the first cholesteric liquid crystal composition and the second layer comprises a majority of the second cholesteric liquid crystal composition.
2 more elements
Dependencies are inferred from the claim text.