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Polymer‐stabilized pretilt angle on the surface of nanoparticle‐induced vertical‐alignment surface for multi‐domain vertical‐alignment liquid‐crystal display
Author(s) -
Kim Dae Hyun,
Kwon Dong Won,
Gim Hye Young,
Jeong KwangUn,
Lee Seung Hee,
Jeong Yeon Hak,
Ryu Jae Jin,
Kim Kyeong Hyeon
Publication year - 2011
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/jsid19.5.417
Subject(s) - materials science , liquid crystal , polymer , nanoparticle , liquid crystal display , silsesquioxane , scanning electron microscope , viewing angle , mesogen , optoelectronics , optics , chemical engineering , nanotechnology , liquid crystalline , composite material , physics , engineering
— By introducing polyhedral oligomeric silsesquioxane (POSS) nanoparticles along with a controlled amount of UV‐curable reactive mesogen (RM) into a liquid‐crystalline (LC) medium, a multi‐domain vertical‐alignment LC device was successfully demonstrated. The device, possessing a vertically aligned LC director in four different azimuthal directions, exhibited a fast response time and wide‐viewing‐angle characteristics, in the absence of conventional polymer‐type vertical‐alignment layers. Electro‐optic characteristics of the fabricated device, before and after UV curing of the cell, were studied. The surface morphology of the substrate surfaces were analyzed by using field‐emission scanning electron microscopy (FESEM). The experimental results show that the technology will possibly be applicable to cost‐effective vertical‐alignment liquid‐crystal devices and is suitable for green‐technology liquid‐crystal displays.