Optical disk substrate and lightguide plate

Details Optical disk substrate and lightguide plate Optical disk substrate and lightguide plate

2007-04-17

2007-04-17

Boykin, Terressa (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C264S176100, C264S219000, C264S328100, C359S107000, C359S642000, C528S198000

Reexamination Certificate

active

10509592

ABSTRACT:
An optical disk substrate and a light guide plate which are formed from a resin composition comprising 0.1 to 20 parts by weight of compound represented by the following formula (I):based on 100 parts by weight of polycarbonate resin.There can be provided an optical disk substrate formed from the resin composition of the present invention, particularly an optical disk substrate which allows the shape of a stamper to be transferred thereon with high precision and hardly undergoes warpage caused by environmental changes as a high density recording medium, and a light guide plate which has little uneven brightness and hardly undergoes warpage.

REFERENCES:
patent: 5138001 (1992-08-01), Ueda et al.
patent: 6474868 (2002-11-01), Geyer et al.
patent: 6908655 (2005-06-01), Arakawa et al.
patent: 2000-239513 (2000-09-01), None
patent: 2002121373 (2002-04-01), None
patent: 2002121374 (2002-04-01), None

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