Patent ID: 7018844
Filing Date: 2006-03-28
Classification: G06K,H01F,H01L,Y10T

Abstract:
1. A non-contact data carrier fabricating method comprising the steps of: preparing a conductive substrate; forming a first resist pattern layer provided with openings on one of the surfaces of the conductive substrate, and forming a second resist pattern layer provided with openings on the other surface of the conductive substrate; forming locating holes in the substrate by coating the first resist pattern layer with a protective film and etching the conductive substrate through the openings of the second resist pattern layer; forming a coil antenna having opposite ends, and a semiconductor device mount by removing the protective film from the first resist pattern layer and plating the conductive substrate through the openings of the first resist pattern layer; removing the first and the second resist pattern layer from the conductive substrate; fixedly mounting a semiconductor device on the semiconductor device mount and connecting the opposite ends of the coil antenna to the semiconductor device by wires; encapsulating the semiconductor device, the coil antenna, the wires and the surroundings of the semiconductor device mount with a sealing resin coating; and removing the conductive substrate from the semiconductor device mount and the coil antenna.