Method for manufacturing multicoloured printed circuits for smart card modules
AssigneeLinxens Holding
InventorsMara Coppola, Nicolas Michaudet, Patrice Glaris
Life of this patent
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Abstract
A method for manufacturing flexible printed circuits for smart card modules, wherein a complex material is provided. This complex material includes an assembly including at least two different-colored strata. Zones of this assembly are visible through the layer of electrically conductive material. This manufacturing method includes an operation that consists in laser etching at least one of the two different-colored strata over a portion of that zone of the assembly of strata that is left visible, so as to reveal the color of the other of the two different-colored strata. Printed circuit manufactured by this method. Module and smart card including this printed circuit.
Claims16
A method for manufacturing flexible printed circuits for smart card modules wherein a complex material is provided,
- said complex material being in the form of a thin board or strip, with two main faces and being flexible so as to be able to be curved in a direction perpendicular to its main faces, this complex material forming an assembly comprising at least two different-colored strata of dielectric material, and
- this complex material further comprising at least one layer of electrically conductive material in contact with one stratum of the assembly comprising at least two different-colored strata of dielectric material, this stratum containing an epoxy resin, contacts being formed in the layer of electrically conductive material, these contacts being intended to establish an electrical connection with a smart card reader, the assembly comprising at least two different-colored strata of dielectric material being visible through the layer of electrically conductive material in at least one zone,
- this manufacturing method being characterized in that it comprises an operation that consists in laser etching at least one of the two different-colored strata over a portion of that zone of the assembly comprising at least two different-colored strata of dielectric material that is left visible, so as to reveal the color of the other of the two different-colored strata.
A printed circuit for a smart card module comprising a complex material having two main faces, this complex material forming an assembly comprising at least two different-colored strata of dielectric material and further comprising at least one layer of electrically conductive material in contact with one stratum of the assembly comprising at least two different-colored strata of dielectric material, this stratum containing an epoxy resin, in which layer of electrically conductive material there are formed contacts intended to establish an electrical connection with a smart card reader, and between which contacts the assembly comprising at least two different-colored strata of dielectric material is visible in at least two zones,
- characterized in that it comprises at least the color of one of said at least two different-colored strata of dielectric material, in one of the two zones that are left visible, and at least the color of one of said at least two different-colored strata of dielectric material in the other of the two zones that are left visible.
A printed circuit for a smart card module comprising:
- a first strata of dielectric material having a first color, where the first strata of dielectric material comprises an epoxy resin;
- a different second strata of dielectric material having a different second color, where the first strata of dielectric material and the second strata of dielectric material form a flexible assembly;
- and
- a layer of electrically conductive material in contact with the first strata of dielectric material, where the layer of electrically conductive material forms electrical contacts for connecting with a smart card reader,
- where the assembly comprises a first zone between a first set of the electrical contacts and a second zone between a second set of the electrical contacts, where the first color of the first strata of dielectric material is visible between the first set of the electrical contacts in the first zone, and where the different second color of the different second strata of dielectric material is visible between the second set of the electrical contacts in the second zone.
Dependencies are inferred from the claim text.