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US 8,728,591 B2Granted
Polymer film, phase difference film, polarizing plate, liquid crystal display device, retardation inducing agent, and merocyanine-based compound
AssigneeFUJIFILM Corporation
InventorsHiroshi Inada, Ryo Nakamura, Masaki Noro
Life of this patent
Estimating the term…
Abstract
Disclosed is a polymer film excellent in performance of inducing Rth. The polymer film comprises at least one species of a compound represented by the formula (I) and a compound represented by the formula (I′):
Claims15
A polarizing plate comprising a polymer film comprising at least one compound represented by formula (I) and formula (I′):
- in the formulae (I) and (I′), R1 represents a C1-6 unsubstituted alkyl group or C6-12 unsubstituted aryl group;
- Y represents a C1-6 substituted or unsubstituted alkylene group, or substituted or unsubstituted arylene group, where, given that Y represents a substituted or unsubstituted alkylene group, and optionally, one carbon atom, or two or more non-adjacent carbon atoms in the alkylene group may be substituted by oxygen atom(s);
- n represents an integer of 1 to 3, and for n=1, R3 represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, and optionally, one carbon atom, or two or more non-adjacent carbon atoms in the substituted or unsubstituted alkyl group may be substituted by oxygen atom(s), and for n=2 to 3, R3 represents an n-valent linking group composed of one or more atoms;
- and for n=2 or larger, n merocyanine units A may be same or different.
1 more element
A liquid crystal display device comprising a polymer film comprising at least one compound represented by formula (I) and formula (I′):
- in the formulae (I) and (I′), R1 represents a C1-6 unsubstituted alkyl group or C6-12 unsubstituted aryl group;
- Y represents a C1-6 substituted or unsubstituted alkylene group, or substituted or unsubstituted arylene group, where, given that Y represents a substituted or unsubstituted alkylene group, and optionally, one carbon atom, or two or more non-adjacent carbon atoms in the alkylene group may be substituted by oxygen atom(s);
- n represents an integer of 1 to 3, and for n=1, R3 represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, and optionally, one carbon atom, or two or more non-adjacent carbon atoms in the substituted or unsubstituted alkyl group may be substituted by oxygen atom(s), and for n=2 to 3, R3 represents an n-valent linking group composed of one or more atoms;
- and for n=2 or larger, n merocyanine units A may be same or different.
1 more element
Dependencies are inferred from the claim text.