| 主权项 |
1. A method for producing a long circularly polarizing plate, comprising, in this order:
(1) continuously applying an optical alignment membrane forming composition onto a long polarizing plate to form a first application membrane on the long polarizing plate; (2) drying the first application membrane to form a first dried coating membrane; (3) radiating a polarized light which is polarized in an oblique direction relative to a length direction of the long polarizing plate, onto the first dried coating membrane, so as to form a long optical alignment membrane in which a direction of an alignment restricting force is oblique relative to the length direction of the long polarizing plate; (4) continuously applying onto the long optical alignment membrane a liquid crystal cured membrane forming composition containing a polymerizable liquid crystal compound (A), so as to form a second application membrane on the long optical alignment membrane; (5) drying the second application membrane to form a second dried coating membrane; and (6) curing the second dried coating membrane to form a long retardation membrane, wherein the polymerizable liquid crystal compound (A) is a compound represented by the following formula (A): X1 represents an oxygen atom, a sulfur atom, or NR1-; R1 represents a hydrogen atom or an alkyl group having a carbon number of 1 to 4; Y1 represents a monovalent aromatic hydrocarbon group having a carbon number of 6 to 12 and optionally having a substituent or a monovalent aromatic heterocyclic group having a carbon number of 3 to 12 and optionally having a substituent; Q3 and Q4each independently represent hydrogen atom, a monovalent aliphatic hydrocarbon group having a carbon number of 1 to 20 and optionally having a substituent, a monovalent alicyclic hydrocarbon group having a carbon number of 3 to 20 , a monovalent aromatic hydrocarbon group having a carbon number of 6 to 20 and optionally having a substituent, a halogen atom, a cyano group, a nitro group, —NR2R3, or -SR2, or Q3 and Q4 are bonded with each other to form an aromatic ring or an aromatic heterocyclic ring together with carbon atoms to which these are bonded; R2 and R3 each independently represent a hydrogen atom or an alkyl group having a carbon number of 1 to 6; D1 and D2 each independently represent a single bond, —C(═O)—O—, —C(═S)—O—, —CR4R5—, —CR4R5—CR6R7—, —O—CR4R5—, —CR4R5—O—CR6R7—, —CO—O—CR 4R5—, —O—CO—CR4R5—, —CR4R5—O—, —CO—CR6R7—, —CR4R5—CO—O—CR6R7—, NR4—CR5R6—, or CO—NR4—; R4, R5, R6 and R7 each independently represent a hydrogen atom, a fluorine atom, or an alkyl group having a carbon number of 1 to 4; G1 and G2 each indepndently represent a divalent alicyclic hydrocarbon group having a carbon number of 5 to 8, where a methylene group constituting the alicyclic hydrocarbon group may be substituted with an oxygen atom, a sulfur atom, or NH—, and a methane group constituting the alicyclic hydrocarbon group may be substituted with a tertiary nitrogen atom; and L1 and L2 each independently represent a monovalent organic group, where at least one of L1 and L2 has a polymerizable group. |
