Retardation plate, elliptically polarizing plate and liquid crystal display
AssigneeFUJIFILM Corporation
InventorsHideyuki Nishikawa, Satoshi Tanaka
Life of this patent
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Abstract
A retardation plate comprising at least one optically anisotropic layer, wherein at least one of said optically anisotropic layers is formed from a composition containing a liquid crystalline compound represented by the following formula: wherein Y11, Y12 and Y13 are methine or N; L1, L2 and L3 are single bond or divalent group; H1, H2 and H3 are formula (DI-A) or (DI-B); YA1, YA2, YB1 and YB2 are methine or N; XA and XB are O, S, etc.; R1, R2 and R3 are -(-L21-Q2)n1-L22-L23-Q1; L21 is single bond or divalent group; Q2 is cyclic divalent group; n1 is 0-4; L22 is —O—, —O—CO—, etc; L23 is —O—, —S—, etc.; Q1 is polymerizable group or H.
Claims18
A retardation plate comprising at least one optically anisotropic layer, wherein at least one of said optically anisotropic layers is formed from a composition containing a liquid crystalline compound represented by the following formula (DI):
- wherein Y11, Y12 and Y13 each independently represent a methine group or a nitrogen atom;
- L1, L2 and L3 each independently represent a single bond or a divalent linking group;
- H1, H2 and H3 each independently represent a group represented by the following formula (DI-A) or (DI-B);
- R1, R2 and R3 each independently represent a group represented by the following formula (DI-R):
- wherein YA1 and YA2 each independently represent a methine group or a nitrogen atom;
- XA represents an oxygen atom, a sulfur atom, a methylene group or an imino group;
- * indicates the position at which the group of formula (DI-A) bonds to any of L1 to L3 in formula (DI);
- ** indicates the position at which the group of formula (DI-A) bonds to any of R1 to R3 in formula (DI),
- wherein YB1 and YB2 each independently represent a methine group or a nitrogen atom;
- XB represents an oxygen atom, a sulfur atom, a methylene group or an imino group;
- * indicates the position at which the group of formula (DI-B) bonds to any of L1 to L3 in formula (DI);
- ** indicates the position at which the group of formula (DI-B) bonds to any of R1 to R3 in formula (DI),
- *-(-L21-Q2)n1-L22-L23-Q1 (DI-R)
- wherein * indicates the position at which the group of formula (DI-R) bonds to any of H1 to H3 in formula (DI);
- L21 represents a single bond or a divalent linking group;
- Q2 represents a divalent group having at least one cyclic structure;
- n1 indicates an integer of from 0 to 4;
- L22 represents **—O—, **—O—CO—, **—CO—O—, **—O—CO—O—, **—S—, **—NH—, **—SO2—, **—CH2—, **—CH═CH— or **—C≡C—;
- ** indicates the position at which the group bonds to Q2;
- L23 represents a divalent linking group selected from —O—, —S—, —C(═O)—, —SO2—, —NH—, —CH2—, —CH═CH— and —C≡C— and their combinations, and when the divalent linking group contains a hydrogen atom, then the hydrogen atom may be substituted with a substituent;
- Q1 represents a polymerizable group or a hydrogen atom, and when the polymerizable group contains a hydrogen atom, then the hydrogen atom may be substituted with a substituent;
- when n1 is 2 or more, then plural (-L21-Q2)'s may be the same or different.
A retardation plate comprising at least one optically anisotropic layer, wherein at least one of said optically anisotropic layers is formed from a composition containing a liquid crystalline compound represented by the following formula (DII):
- wherein Y31, Y32 and Y33 each independently represent a methine group or a nitrogen atom;
- R31, R32 and R33 each independently represents the following formula (DII-R):
- wherein A31 and A32 each independently represent a methine group or a nitrogen atom;
- X3 represents an oxygen atom, a sulfur atom, a methylene group or an imino group;
- Q31 represents a 6-membered cyclic structure-having divalent linking group;
- n3 indicates an integer of from 1 to 3;
- L31 represents *—O—, *—O—CO—, *—CO—O—, *—O—CO—O—, *—NH—, *—SO2—, *—CH2—, *—CH═CH— or *—C≡C—;
- * indicates the position at which the group bonds to Q31;
- L32 represents a divalent linking group selected from —O—, —S—, —C(═O)—, —SO2—, —NH—, —CH2—, —CH═CH— and —C≡C— and their combinations, and when the divalent linking group contains a hydrogen atom, then the hydrogen atom may be substituted with a substituent;
- Q32 represents a polymerizable group or a hydrogen atom, and when the polymerizable group contains a hydrogen atom, then the hydrogen atom may be substituted with a substituent;
- when n3 is 2 or more, then plural Q31's may be the same or different.
Dependencies are inferred from the claim text.