Registers – Records – Conductive
Patent
1998-09-14
2000-11-07
Hajec, Donald
Registers
Records
Conductive
235441, 235487, G06K 1906, G06K 700, G06K 706
Patent
active
061423815
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a chip card in various embodiments. On the one hand the present invention relates to a chip card for contact access to a chip arranged in a chip module, the chip module being arranged in a recess of a card body such that contact surfaces of the chip module are arranged at the surface of the card body. Such chip cards are known for example as so-called "phone cards".
On the other hand the present invention relates to a chip card for contactless access to a chip or chip module, the chip or chip module being arranged together with a coil in a card body to form a transponder unit and conductor ends of the coil being contacted on connection surfaces of the chip or chip module. Such chip cards are known as so-called "transponder cards" used for example for personal identification.
The present invention further relates to a chip card for contact access and contactless access to a chip arranged in a chip module, the chip module being arranged in a recess of a card body such that outer contact surfaces of the chip module are arranged at the surface of the card body and inner contact surfaces of the chip module are connected to conductor ends of a coil arranged in the card body to form a transponder unit. Such chip cards are referred to as so-called "combicards" or also "hybrid cards" as on the one hand they allow direct contact access to the chip module and on the other hand allow contactless access to the chip module by means of the coil acting as antenna.
In all the above mentioned chip cards, irrespectively of the particular embodiment, the possibility of reliable contact access to the chip or chip module has proved essential to the functioning reliability of the chip card. In the case of chip cards of the type provided with a chip module and facilitating contact access to outwardly directed connection surfaces of the chip module, special measures are required to maintain the defined position of the chip module and thus also the positioning of the outer connection surfaces relative to the card body in spite of the changing bending stresses which frequently occur in chip cards. Here a particular problem consists in that, due to its arrangement in the card body at a distance from the so-called "neutral axis", in the event of a bending load the chip module is subjected to the maximum bending stress occurring in the surface region of the card body. The chip module is secured in a recess of the card body by adhesion.
To prevent delaminations in the region of the boundary surface between the adhesive and the card body, which could lead to the detachment of the chip module from the card body, it is known to arrange a metal ring on the chip module to provide a certain anchoring in the card body and thus to brace the card body in the region of the chip module.
Irrespectively of the particular form of the chip card, the object of the invention is to propose measures which improve the functioning reliability of the chip card with regard to the changing dynamic bending stresses which frequently occur in a chip card.
In the case of a chip card for contact access, this object is achieved by the features of claim 1.
In accordance with the invention, the card body is provided in the region of the recess with a laminated-in bracing device extending in the longitudinal direction of the card.
In contrast to the known bracing device outlined above, which forms an integral part of the chip module, the bracing device according to the invention is independent of the chip module and is integrated into the card body during its production before the recess accommodating the chip module is introduced into the card body. The arrangement of the bracing device in the card body, for example by laminating-in, results in improved anchoring in the card body. Additionally it is possible to use a standardized bracing device which need not be precisely adapted to the dimensions of the chip module, as is the case with the known ring-shaped bracing device integrally connected to the chip module.
In the event that the
REFERENCES:
patent: 4463971 (1984-08-01), Hoppe et al.
patent: 5321240 (1994-06-01), Takahiro
patent: 5420757 (1995-05-01), Eberhardt et al.
patent: 5612532 (1997-03-01), Iswasaki
patent: 5671525 (1997-09-01), Fidalgo
patent: 5852289 (1998-12-01), Masahiko
patent: 5962840 (1999-10-01), Haghiri-Tehrani et al.
Finn David
Rietzler Manfred
Hajec Donald
Taylor Larry D
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