US 12,423,552 B2
Card element, chip card, and process for manufacturing a card element for a chip card
Andreas Minks, Bad Wiessee (DE)
Assigned to GIESECKE+DEVRIENT EPAYMENTS GMBH, Munich (DE)
Appl. No. 18/552,245
Filed by GIESECKE+DEVRIENT EPAYMENTS GMBH, Munich (DE)
PCT Filed Mar. 23, 2022, PCT No. PCT/EP2022/025117
§ 371(c)(1), (2) Date Sep. 25, 2023,
PCT Pub. No. WO2022/199893, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 10 2021 001 578.9 (DE), filed on Mar. 25, 2021.
Prior Publication US 2024/0160884 A1, May 16, 2024
Int. Cl. G06K 19/077 (2006.01); G06K 1/12 (2006.01)
CPC G06K 19/07749 (2013.01) [G06K 1/12 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A card body for a chip card, having:
an outer metal layer having a planar surface interrupted only by a module opening for receiving a chip module,
wherein the module opening extends to an inner side of the outer metal layer,
a ferrite layer disposed directly adjacent to the inner side of the outer metal layer, wherein the module opening extends through the ferrite layer,
an inner metal layer disposed directly adjacent to the ferrite layer, wherein the inner metal layer and outer metal layer comprise the same material,
wherein a portion of the module opening that has a reduced cross-section extends through the inner metal layer, and
wherein there is provided a slit which extends from a peripheral face of the inner metal layer to the module opening and which extends through the entire thickness of the inner metal layer, and
a final layer disposed directly adjacent to the inner metal layer and consisting of a plastic material.