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AssigneeDai Nippon Printing Co., Ltd.
InventorsKoji Ishizaki, Kanami Ikegami
Estimating the term…
An optical element and a process for producing the optical element are provided. The optical element includes a light transparent substrate and a first birefringence layer provided on the substrate. The first birefringence layer includes a polymerizable liquid crystal having rodlike molecules and a coupling agent and/or a surfactant that homeotropically align the polymerizable liquid crystal to form a crosslinked polymer in a state of homeotropic alignment. The crosslinked polymer has a three-dimensionally crosslinked structure wherein the polymerizable liquid crystal having rodlike molecules holds homeotropic alignment.
An optical element comprising:
The process according to claim12, wherein a vertically aligning film is provided on said light absorption-type color filter.
A substrate for liquid crystal alignment, comprising at least:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Filters, e.g. light shielding masks: colour filters
Structural association of cells with optical devices, e.g. polarisers or reflectors: birefringent elements, e.g. for optical compensation
Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer
Alignment layer characterised by chemical composition: organic silicon compound, e.g. organosilicon
Term ended 11 Sep 2026 (estimated)
This application claims the benefit of Japanese Applications 2003-436101, filed Nov. 28, 2003, 2003-436102 filed Nov. 28, 2003, 2003-436103 filed Nov. 28, 2003, 2003-402300 filed Dec. 1, 2003, and 2003-403633 filed Dec. 2, 2003, the entireties of which are incorporated herein by reference.
1. Field of the Invention
The present invention relates to an optical element comprising a birefringence layer and a process for producing the same, a substrate for liquid crystal alignment having a birefringence layer, and a liquid crystal display device comprising the substrate for liquid crystal alignment. The present invention also relates to a birefringent material.
FIG. 1 is a diagram showing an example of a basic sectional structure of an optical element in a first embodiment of the present invention;
FIG. 2 is a typical cross-sectional view showing the structure of a birefringence layer constituting the optical element shown in FIG. 1;
FIG. 3 is a schematic view showing the sectional structure of another embodiment of the optical element according to the present invention;
Embodiments of each of the optical element, production process of the optical element, substrate for liquid crystal alignment, liquid crystal display device, and birefringent material according to the present invention will be described, if necessary, with reference to the accompanying drawings.
Optical Element and Birefringent Material
1. Optical Element in First Aspect of Invention