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P‐67: Applications of New Photoalignment Materials Containing Cinnamoyl Group
Author(s) -
Kim Jinyool,
Kim Sanghee,
Park Kyusoon,
Kim Taemin
Publication year - 2001
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1831988
Subject(s) - photopolymer , liquid crystal , materials science , liquid crystal display , optoelectronics , phase (matter) , optics , viewing angle , group (periodic table) , polymer , polymerization , composite material , chemistry , organic chemistry , physics
Liquid crystal alignment performance of a series of polymethacylate based photopolymers containing cinnamoyl group and their applications have been investigated. By illuminating linearly polarized UV light on the film of the photopolymers, strong azimuthal anchoring energy was induced and liquid crystal alignment on the photopolymer film was thermally stable up to 150 °C. Photochemical stability appeared to be dependent on the mode of alignment. Pretilt angle was controllable from 0 to 90 degree by changing the amount of UV dose, incident angle, parameters of liquid crystal, along with slight structural modifications of the photopolymer. Applications to current LCD modes such as TN, VA, IPS, STN and the film application for phase compensation and retardation have also been studied.