Dai Nippon Printing Co., Ltd.

Shinya Kiura

Yuichi Miyazaki

Hironori Kamiyama

Yusuke Hagiwara

Nobuo Naito

Takeshi Nishizono

Yukihiro Kyouden

Hidetsugu Tazawa

Takeaki Imaizumi

Nozomi Kaga

Yuusuke Satou

Takeshi Nisizono

The present invention is to provide an electromagnetic wave shielding material including a transparent substrate and a convex pattern layer composed of a conductive composition formed in a prescribed pattern on the transparent substrate, wherein the conductive composition contains conductive particles and a binder resin; and in observation of a transverse cross section of the convex pattern layer by electron microscopic photography, at least a part of the conductive particles has a fused continuation and a method for manufacturing the same. The electromagnetic wave shielding material and the method for manufacturing the same include a configuration capable of achieving a lower surface resistivity in an electromagnetic wave shielding material which is required to achieve a much more reduction in a line width of the pattern, specifically, a reduction to a line width of not more than 30 &#x3bc;m, and more preferably not more than 15 to 20 &#x3bc;m and a treatment method capable of reducing the surface resistivity by an easy and short-time treatment.

Electromagnetic wave shielding material, and method for manufacturing same

Intended is to provide an electromagnetic shielding material having a conductive layer pattern by transferring a conductive composite to a transparent base material, and an electromagnetic shielding material having a metal layer formed on the transferred conductive layer. The electromagnetic shielding material is free from the troubles such as the breaking of wire, the non-conforming shape or the low contact, which is based on the non-conforming transfer of the conductive composite. The electromagnetic shielding material comprises a transparent base material, a primer layer formed over the transparent base material, and a conductive layer formed in a predetermined pattern on the primer layer. In the primer layer, a portion having the conductive layer formed therein has a thickness larger than the thickness of a portion without the conductive layer.

Printed matter and its manufacturing method, and electromagnetic shielding material and its manufacturing method

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Tokyo, Japan

Shinya Kiura