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US 10,501,480 B2Granted
Optical film
AssigneeSumitomo Chemical Company, Limited
InventorsMasao Morimoto, Noriyuki Hida
Life of this patent
Estimating the term…
Abstract
Provided is an optical film which has a maximum absorption at a wavelength in the range of 600 to 680 nm, has a high dichroic ratio, and is excellent in light resistance. The optical film includes: a polymer of a polymerizable liquid crystal compound; and a compound represented by the following general formula (1).
Claims13
An optical film comprising:
- a polymer of a polymerizable liquid crystal compound;
- and a compound represented by the following general formula (1):
- wherein:
- R1 represents an alkyl group having 1 to 11 carbon atoms;
- P1 and P2 each independently represent —S—, —O— or —N(R12)—, R12 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and Q1 and Q2 each independently represent ═N— or ═CH—;
- Ar represents a group represented by the following general formula (Ar-1) or (Ar-2):
- wherein * represents a binding part with N;
- R2 represents a group selected from the following groups:
- R7 to R9 are substituents other than a hydrogen atom, and each independently represent an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom or a cyano group, and one or more of hydrogen atoms in the alkyl group or the alkoxy group may be substituted with a halogen atom or a hydroxy group;
- m represents an integer of 0 to 10, and when one group has two occurrences of m, the two occurrences of m may be mutually the same or different;
- and p, q and r each independently represent an integer of 0 to 2.
8 more elements
A composition including a polymerizable liquid crystal compound, and a compound represented by the following general formula (1):
- wherein:
- R1 represents an alkyl group having 1 to 11 carbon atoms;
- P1 and P2 each independently represent —S—, —O— or —N(R12)—, R12 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and Q1 and Q2 each independently represent ═N— or ═CH—;
- Ar represents a group represented by the following general formula (Ar-1) or (Ar-2):
- wherein * represents a binding part with N;
- R2 represents a group selected from the following groups:
- R7 to R9 are substituents other than a hydrogen atom, and each independently represent an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom or a cyano group, and one or more of hydrogen atoms in the alkyl group or the alkoxy group may be substituted with a halogen atom or a hydroxy group;
- m represents an integer of 0 to 10, and when one group has two occurrences of m, the two occurrences of m may be mutually the same or different;
- and p, q and r each independently represent an integer of 0 to 2.
6 more elements
Dependencies are inferred from the claim text.