Dexerials Corporation

Dai Nippon Printing Co., Ltd.

Yukihiro Ono

Kazuhiro Watanabe

Tomoyuki Horio

Seiji Shinohara

Masataka Nakashima

Satoshi Kuboyama

Kiyotaka Matsui

Takahisa Nomura

Kentaro Oshima

A laminated thin film having excellent adhesion between an organic and inorganic layer and method for manufacturing the same are provided. A laminated thin film is provided with a hard coat layer having a surface on which metal oxide particles are exposed; and an adhesion layer deposited on the surface of the hard coat layer on which the metal oxide particles are exposed, the adhesion layer being constituted by a metal or metal oxide in an oxygen-deficient state of the same metal as the metal oxide particles. Thereby, the adhesion layer strongly adheres to resin of the hard coat layer and adheres even more strongly to the exposed metal oxide particles, allowing excellent adhesion.

Laminated thin film and method for manufacturing the same

The present invention aims to provide an optical layered body that has excellent interlayer adhesiveness, particularly even in outdoor use, and also has highly excellent anti-blocking properties. The present invention relates to an optical layered body including: a substrate film; a hard coat layer containing silica fine particles on at least one surface of the substrate film; and a dry film layer on a surface of the hard coat layer opposite to the substrate film side surface of the hard coat layer, wherein the silica fine particles are exposed on the dry film layer side surface of the hard coat layer; the dry film layer is directly formed on the surface of the hard coat layer on which the silica fine particles are exposed; the hard coat layer before the formation of the dry film layer has projections and depressions on the surface on which the dry film layer is to be formed; the hard coat layer has an average silica fine particle abundance in ten 0.2 &#x3bc;m&#xd7;0.2 &#x3bc;m regions of 30 to 80% and a standard deviation of silica fine particle abundances in the 10 regions of 1 to 7, where the 10 regions are randomly selected from a cross section of the hard coat layer in the thickness direction within the range from the dry film layer side interface to 10% of the thickness in the thickness direction; and the hard coat layer has a silicon atom abundance A of 2 to 10% on the surface opposite to the substrate film side surface as determined by X-ray photoelectron spectroscopy.

Optical layered body

Growing community of inventors

Tokyo, Japan

Yukihiro Ono