Optical member and optical product provided therewith

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

Reexamination Certificate

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C349S158000, C428S001310

Reexamination Certificate

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06885415

ABSTRACT:
An optical member comprising a polymer which is amorphous and has a glass transition temperature of not lower than 110° C. and optical property parameters O′R(∞)) and O′G(∞) that satisfy the following inequality (1),in-line-formulae description="In-line Formulae" end="lead"?|O′G(∞)|<−0.75×|O′R(∞)|+0.017  (1),in-line-formulae description="In-line Formulae" end="tail"?is superior in its heat resistance and transparency and high in its stability of optical properties. Therefore, the optical member can be used as, for example, a constituent of optical systems in a liquid crystal display, thereby suppressing change in a display color tone depending on variation of using circumstances of the liquid crystal display.

REFERENCES:
patent: 6090888 (2000-07-01), Khanarian et al.
patent: 6549195 (2003-04-01), Hikida et al.
patent: 0 530 249 (1993-03-01), None
patent: 0 542 176 (1993-05-01), None
patent: WO 9118029 (1991-11-01), None
T. Inoue et al, “Molecular origin of viscoelasticity and chain orientation of glassy polymers”, Rheologica Acta, vol. 36, No. 3, pp. 239-244, 1997.

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