| 摘要 |
PROBLEM TO BE SOLVED: To avoid an adverse influence on product quality even if the line width of a conductive convex pattern layer formed by a draw-out primer intaglio printing method becomes thick when its printing speed is made extremely high in order to make the electromagnetic wave shielding performance highly compatible with light permeability of an electromagnetic wave shielding material. SOLUTION: With regard to the electromagnetic wave shielding material 10 in which conductive convex pattern layers 3 are accumulated, the conductive convex pattern layers including conductive particles and binder resin on a transparent substrate 1 through a primer layer 2 having many openings 4 formed in the non-formation area where the primer layer is thicker in the formation area compared to the non-formation area of the conductive convex pattern layer in at least one of the two parallel striated groups in which the conductive convex pattern layers cross each other, the line width W becomes thick by a leaking part 5 and the main convex cross-sectional shape are different at both sides of the summit that the widths at the base from the summit to the primer layer surface, and a relation (Ww-Wn)/2Wn between the width Ww of wider base and the width Wn of a narrower base is set to be 0.5 or smaller. COPYRIGHT: (C)2011,JPO&INPIT
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