Method for making contactless cards with coiled antenna
First Claim
1. A method of manufacturing a smart card capable of operating in a contactless mode, comprising:
- forming an antenna/module assembly by affixing ends of an antenna to connection areas of a module, wherein the antenna is formed from a flat wound wire;
securely positioning the antenna/module assembly against a first plastic plate, the first plastic plate having an opening which serves as a housing for the module;
placing a second plastic plate on the antenna/module assembly; and
connecting the second plastic plate to the first plastic plate, thereby enclosing the antenna/module assembly.
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Accused Products
Abstract
The invention concerns the production of contactless transmission chip card, and particularly mixed cards operating with or without contact. The method for the reliable and efficient setting of an integrated circuit module (M) and of an inductive transmission antenna (A), consists in producing the module providing connection ranges for the antenna, making an antenna with a flat coiled wire, and soldering the ends of said antenna on the module ranges, then making a plastic wafer (30) provided with an opening, the bottom of this opening being closed by an adhesive film (34). The module and the antenna are set against the wafer, and maintained by the adhesive material at the bottom of the housing. Another wafer (40) is directly mounted on the assembly.
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Citations
13 Claims
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1. A method of manufacturing a smart card capable of operating in a contactless mode, comprising:
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forming an antenna/module assembly by affixing ends of an antenna to connection areas of a module, wherein the antenna is formed from a flat wound wire;
securely positioning the antenna/module assembly against a first plastic plate, the first plastic plate having an opening which serves as a housing for the module;
placing a second plastic plate on the antenna/module assembly; and
connecting the second plastic plate to the first plastic plate, thereby enclosing the antenna/module assembly. - View Dependent Claims (2, 3, 4, 5)
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6. A method of manufacturing a smart card capable of operating in a contactless mode, comprising:
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forming an antenna/module assembly by affixing ends of an antenna to connection areas of a module, wherein the antenna is formed from a flat wound wire;
securely positioning the antenna/module assembly against a first plastic plate, the first plastic plate having an opening which serves as a housing for the module and having an adhesive sheet affixed to an outside surface;
placing a second plastic plate on the antenna/module assembly;
connecting the second plastic plate to the first plastic plate, thereby enclosing the antenna/module assembly;
and removing the adhesive sheet to expose access contacts of the module. - View Dependent Claims (7)
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8. A method of manufacturing a mixed smart card capable of operating both in a contactless mode and in a contact mode, comprising:
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forming an antenna from a flat wound wire;
forming a module which includes standardized access contacts;
affixing ends of the antenna to connection areas of the module, so as to obtain an antenna/module assembly;
affixing the antenna/module assembly against a first plastic plate, the first plastic plate having an opening which serves as a housing for the module;
placing a second plastic plate on the antenna/module assembly; and
connecting the second plastic plate to the first plastic plate, thereby enclosing the antenna and the module;
wherein the affixing of the antenna/module assembly includes temporarily securely positioning an adhesive sheet to the first plastic plate, and securely positioning the module against an adhesive side of the adhesive sheet inside the opening for the module so the standardized access contacts are flush with an outside surface of the mixed smart card. - View Dependent Claims (9, 10, 11)
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12. A smart card comprising:
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a module with standardized access contacts and an antenna attached to the module, the antenna being formed from a flat wound wire, and ends of the antenna being affixed to connection areas of the module, so as to form an antenna/module assembly;
a first plastic plate having an opening which serves as a housing for the module;
an adhesive sheet securely positioned against the first plastic plate with the module inserted in the opening of the first plastic plate so the standardized access contacts are flush with a bottom of this opening in such a way that removing the adhesive sheet reveals bared standardized access contacts flush with an outside surface of the mixed smart card;
a second plastic plate connected to the first plastic plate to enclose the antenna and the module.
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13. A mixed smart card comprising:
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a module having access contacts;
an antenna formed of a flat wound wire attached to the module;
a first plastic plate formed with an opening, the opening serving as a housing for the module, a second plastic plate, wherein the second plastic plate and the first plastic plate enclose the antenna and the module;
the access contacts being flush with an outside surface of the first plastic plate that forms an outside surface of the mixed smart card;
and an adhesive sheet temporarily securely affixed to the outside surface of the first plastic sheet, so that removal of the adhesive sheet exposes the access contacts flush with the outside surface of the first plastic plate.
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Specification