Dependence of Polymer-Stabilized Ferroelectric Liquid Crystals on Photocuring Condition

Effect of Polymer Stabilization on Molecular Alignment of Ferroelectric Liquid Crystal in Wide-Gap Cell

“…The polymer-stabilized (PS) LC is typically fabricated as follows: a photocurable monomer or prepolymer is dissolved in the LC medium, and then, the monomer or prepolymer is polymerized by the UV irradiation to the LC medium. [30][31][32][33][34][35][36][37][38][39][40][41][42] In this study, the following materials were used: the FLC was FH-8002N (DIC), the photocurable mesogenic mononomer was monoacrylate UCL-001 (DIC), 30,41) which was doped with a 1 wt % photoinitiator, and the LC alignment film was polyimide RN1199 (Nissan Chemical Industries) that induced a defect-free FLC molecular alignment with the C2-chevron structure under the quiescent condition. 17,18) The relevant properties of FH-8002N given in the catalogue are shown in Table I.…”

“…As a result, the structural defects, which considerably degrade the optical performance, occur. 29) In this study, we try to suppress the layer transformation by utilizing the polymer stabilization technique [30][31][32][33][34][35][36][37][38][39][40][41][42] and research the effect of the polymer on the FLC molecular alignment structure.…”

Influence of Fabrication Conditions on Monostability of Polymer-Stabilized Ferroelectric Liquid Crystals

“…However, the bistability of FLC devices is disadvantageous for LC displays, which possess grayscale or full-color capability. 13) In previous papers, [13][14][15][16][17][18][19][20][21][22][23][24] we reported that polymer-stabilized FLCs (PS-FLCs), in which a photocurable mesogenic monomer is doped into an FLC and UV photocuring is carried out in the SmC Ã phase under the application of a bipolar AC electric field or in the SmA phase at the quiescent condition, may show monostable and V-shaped electrooptical characteristics with a grayscale capability without a threshold. The PS-FLCs with V-shaped electrooptical characteristics are usually called PSV-FLCs.…”