Dai Nippon Printing Co., Ltd.

Kouhei Ohno

Katsuya Sakayori

Kazunari Ikeda

Shigeki Kawano

Hiroko Amasaki

Hidetsugu Tazawa

There is provided a resin laminate having a layer construction of a first inorganic material layer/insulating layer/second inorganic material layer or a layer construction of an inorganic material layer/insulating layer, wherein the insulating layer has a multi-layer structure of two or more resin layers of a core insulating layer and an adhesive insulating layer. In this case, the resin laminate has the adhesive insulating layer which can realize optimal etching, is suitable for etching by a wet process, and has excellent adhesion. At least one of the layers constituting the insulating layer is formed of a polyimide resin which comprises repeating units represented by formula (1) and has a glass transition point of 150 to 360&#xb0; C. and is dissolvable in a basic solution at a rate of more than 3 &#x3bc;m/min, preferably more than 5 &#x3bc;m/min, and most preferably more than 8 &#x3bc;m/min.

Growing community of inventors

Shinjuku-ku, Japan

Kouhei Ohno