Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With charge transferring layer of specified composition
Patent
1995-10-16
1997-08-05
Ryan, Patrick
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
With charge transferring layer of specified composition
428 641, 428 642, 428 644, 428 651, 428913, 43027014, 4304951, 430945, 369283, 369288, C09K 1900
Patent
active
056540469
ABSTRACT:
An optical element which exhibits a great improvement in durability even after repeated use. The optical element comprising a substrate having thereon (a) a recording layer comprising a liquid crystal polymer composition and (b) a surface protective layer in this order, in which the protective layer comprises a plurality of layers laminated such that the hardness thereof increases from the layer adjacent to the recording layer toward the uppermost layer in order, or the protective layer comprises a plurality of layers laminated such that the glass transition point thereof becomes higher from the layer adjacent to the recording layer toward the uppermost layer in order. Furthermore, the layer adjacent to the recording layer preferably has a pencil hardness of HB or higher and the uppermost layer preferably has a pencil hardness of 3 H or higher.
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Eur. Polym. J., vol. 18, pp. 651 to 659 (1982), "Thermotropic Liquid-Crystalline Polymers-VI*", Valery P. Shibaev et al.
Mol. Cryst. Liq. Cryst., vol. 169, pp. 167-192 (1989), "Application of Side Chain Type Liquid Crystal Polymer for Display and Recording Devices", T. Nakamura et al.
Makromol. Chem. vol. 179, pp. 273-276 (1978), "Model Considerations and Examples of Enantiotropic Liquid Crystalline Polymers", Heino Finkelmann et al.
Akashi Ryojiro
Morikawa Takashi
Ninomiya Masanobu
Uematsu Takashi
Evans Elizabeth
Fuji 'Xerox Co., Ltd.
Ryan Patrick
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