Patent ID: 9644146
Date: 2017-05-09
CPC Classifications: C08F,C09K,G02F

Claim:
1. A composition for forming a liquid crystal layer comprising: a liquid crystal material; and a first compound, the first compound having a structure that generates ketyl radicals when undergoing a hydrogen abstraction reaction caused by exposure to light, wherein the first compound is represented by the following chemical formula (1): wherein A 1 and A 2 are each independently a benzene ring, a biphenyl ring, or a C1-C12 linear or branched alkyl or alkenyl group; one of A at least one of A a hydrogen atom in A two adjacent hydrogen atoms in A a hydrogen atom in the alkyl, alkenyl, alkylene, alkenylene, or aralkyl group of A a —CH P Sp m is 1 or 2; a dotted line connecting A Y is a —CH the composition further comprising a second compound that contains a monofunctional or polyfunctional polymerizable group having a ring structure; wherein the second compound that contains a monofunctional or polyfunctional polymerizable group having a ring structure, is represented by the following formula (3): wherein R 3 is a —R 4 —Sp 2 —P 2 group, a hydrogen atom, a halogen atom, a —CN group, a —NO 2 group, a —NCO group, a —NCS group, an —OCN group, a —SCN group, a —SF 5 group, or a C1-C12 linear or branched alkyl group; P Sp a hydrogen atom in R a —CH R A —CH a hydrogen atom in A Z is a —O— group, a —S— group, a —NH— group, a —CO— group, a —COO— group, a —OCO— group, a —O—COO— group, a —OCH