Patent ID: 7735221
Filing Date: 2010-06-15
Classification: G01R,H05K,Y10T

Abstract:
1. A method for manufacturing a multilayer wiring board, comprising the steps of: forming a flat surface at a desired area on a surface of a multilayer wiring board having a multilayer wiring layer, the multilayer wiring layer having a convexo-concave surface formed thereon; and depositing an electrical resistance material on said flat surface to form a resistive element; wherein said flat surface is a surface of a dummy layer, and said dummy layer is formed by depositing a material for said dummy layer so that the material may have a thickness dimension enough to bury said convexo-concave surface within said desired area and thereafter polishing the material to be a flat surface; and wherein said dummy layer is made of a conductive material, and wherein said dummy layer is formed by forming a resist mask made of a photoresist to expose an area forming said flat surface and by depositing said conductive material for said dummy layer at an area exposed from said resist mask by an electroplating method.