Patent ID: 7081328
Filing Date: 2006-07-25
Classification: B82Y,G02F,G11B,Y10S

Abstract:
1. An optical disk from which recorded data are read out by light irradiation, comprising: a substrate comprising recording pits as data on a surface thereof; and stacked films formed on the substrate, the films comprising a super-resolution film containing a polymer matrix and particles each consisting of a semiconductor particle and an organic group covalently bonded thereto, and a reflective film reflecting light, the super-resolution film and the reflective film being provided in this order from a light incident side, and a modal diameter in particle size distribution of the particles being not smaller than ¼ and not larger than one times as large as a Bohr radius of an exciton of the semiconductor, wherein the organic group covalently bonded to the semiconductor particle is directly in contact with the polymer matrix and wherein even in the case where a part of polymer molecules in the polymer matrix is covalently bonded to the semiconductor particle, a ratio of the polymer molecules bonded to the semiconductor particle is 1 mol % or less of the entire polymer molecules in the polymer matrix.