P‐103: Chemical Analysis of Polymerization of Monomer Suspended in PS‐MVA‐LCD

Abstract

New LC technology, such as polymer stabilized (sustained) LCD (PS‐LCD), blue phase LCD is interested in now. It is necessary to form polymer layer in PS‐LCD and polymer network structure in blue phase mode LC by photo curing monomer suspended in LC, and the degree of polymerization of monomer is important to control their systems to avoid the influence of residual monomer. But it is difficult to analyze polymer and residual monomer in LC because of low concentration less than 1% in PS‐LCD (10% in blue phase LCD). In this paper, it has tried to analyze the polymerization of monomer suspended in PS‐LCD dividing a cell cross sectional direction, bulk LC layer, vicinity LC layer and interface LC/PI film layer, and investigated the polymerization of monomer and the residual monomer. It is supposed that monomer suspended in LC is much condensed and polymerized more than 98% in the interface LC/PI film existing little in vicinity LC layer.