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US 2020/0110209 A1Published application
Methods of forming optical articles
AssigneeLight Polymers Holding
InventorsChih-Hao Huang, Valeriy Kuzmin, Evgeny Morozov
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Abstract
Methods of forming optical articles from lyotropic liquid crystal solutions are disclosed. A lyotropic liquid crystal solution is shear-coated on a temporary substrate to form a birefringent coating layer of 4 micrometers or less in thickness. A permanent substrate is adhered to the birefringent coating layer and the temporary substrate is removed. Optical articles formed by such methods are also disclosed.
Claims20
A method of forming an optical article, comprising the steps of:
- providing a lyotropic liquid crystal solution;
- providing a coatable substrate comprising a temporary substrate and a surface modification layer;
- shear-coating the lyotropic liquid crystal solution on the surface modification layer to form a birefringent coating layer on the surface modification layer, the birefringent coating layer being 4 micrometers or less in thickness, the birefringent coating layer having a first major surface in contact with the surface modification layer and a second major surface opposite the first major surface;
- providing a permanent substrate comprising a main substrate and an adhesive layer;
- laminating the permanent substrate to the birefringent coating layer such that the adhesive layer is adhered to the second major surface;
- and
- separating the temporary substrate from the birefringent coating layer such that the coating layer remains adhered to the adhesive layer.
4 more elements
An optical article, comprising:
- a birefringent coating layer of 4 micrometers or less in thickness having first major surface and a second major surface opposite the first major surface;
- a hydrophilic layer or a primer layer in contact with the first major surface;
- a main substrate;
- and
- an adhesive layer between the main substrate and the birefringent coating layer, the adhesive layer having a third major surface and a fourth major surface opposite the third major surface, the third major surface being in contact with the main substrate and the fourth major surface being in contact with the second major surface.
2 more elements
Dependencies are inferred from the claim text.