Patent ID: 6435415
Filing Date: 2002-08-20
Classification: G06K

Abstract:
A method of making an electronic memory card that, without electrical contact, exchanges information with a reader device, said electronic memory card including a coupling antenna for coupling with said reader device, and a semiconductor die connected to said antenna, the method comprising the steps of:a) forming on a support sheet of plastics material, a coupling antenna provided with two electrical connection terminals; b) mounting, on said electrical connection terminals, a semiconductor die having protruding contacts engaging said terminals; c) placing, on the support sheet, an intermediate sheet, made of a uniform layer of the same plastics material and without a reinforcer being included in such layer, that covers said semiconductor die, the intermediate sheet being non-perforated and covering the semiconductor die and having a surface area with no cavity therein sized to receive the semiconductor die, said intermediate sheet having a melting point that is lower than the melting point of the support sheet; d) placing an outer sheet made of plastics material at least on said intermediate sheet; and e) laminating the support sheet and outer sheet together by applying heat and pressure, and embedding the semiconductor die is embedded within a cavity formed in said surface area of the intermediate sheet as a result of the laminating step.