Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – With window means
Patent
1995-12-05
1997-12-30
Saadat, Mahshid D.
Active solid-state devices (e.g., transistors, solid-state diode
Housing or package
With window means
257678, 257687, 257698, 257727, 257730, 257731, H01L 2302, H01L 2322, H01L 2304, H01L 2334
Patent
active
057033951
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to an electronic memory device and to a method for assembling such a memory device.
At the present there are numerous small devices, generally without an internal power supply, which make use of electronic memories which can be read or read/written by an adequate reading system. Such memory devices can be incorporated into a great number of systems like e.g. chip cards, which are used as means for obtaining money (credit cards, bank cards, etc.), prepayment cards (telephone, coffee machines, parking, etc.), as well as electronic key or electronic label systems. Other applications are boards for electronic apparatus, front panels of instruments, frames for machines, all kind of complex components, etc. Such memory devices can be attached to supports allowing to store information stored within the memory which concern mainly the support. It is desired to have memory devices which can be easily adapted to all kinds of application and which at the same time can assure a protection of fragile electronic elements.
In view of that, several important points are detrimental to the reliability of most of these memory devices and consequently limit their applications. deformed or destroyed, even with a relatively limited mechanical or thermal stressing. The use of such memory devices is, therefore, limited to applications where their possible destruction would not have particularly harmful consequences. which are a significant and endemic source of poor operation. Frequently the situation is that the memory devices (cards, keys, etc.) can no longer be introduced into the reading device or can no longer be read by the latter. the extent and by the form often standardized of the supports and of the reading device. The kind of attaching or assembling of said memory devices on the support and the way how to access to the memory drastically restricts the potential field of applications.
The invention aims at providing a solution for these different problems by means of an electronic memory device having a particularly reliable construction and being flexible in the applications.
SUMMARY OF THE INVENTION
According to the invention, this aim is achieved by a miniaturized electronic memory device comprising a case used both as housing and as fixation means for attaching an electronic subsystem to a support. Said subsystem comprises an interconnection interface on which is mounted at least one integrated memory circuit with reading or reading/writing superimposed on the power supply. Said case can be incorporated substantially in its integrity into the support. The case can also fulfill relatively complex tasks and can be integrated mechanically, electronically and functionally within systems.
Said interconnection interface is housed inside an extremity of the case. Said housing is preferably realized by insertion. The interconnection interface is bordered at least partially by a case extremity. The interconnection interface comprises metallized zones arranged so as to ensure, after assembly, connections between the terminals of the at least one integrated memory circuit and a power supply. For doing so, contacts are situated as central contacts on the interconnection interface, and they can be also situated as peripheral contacts on the case.
Preferably, at least one integrated memory circuit is connected electrically and mechanically to one or two surfaces of the interconnection interface, this configuration forms an electronic subsystem. It is also possible to connect a supplementary component, which can be, e.g. another integrated circuit or a power supply. According to the invention, at least one terminal of one integrated memory circuit is connected electrically with at least one central contact of the interconnection interface and at least two terminals of a power supply can be connected electrically with at least two central contacts.
The memory device comprises fixation means and a case extremity which is shaped to attach said electronic subsystem to a support. At
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Arroyo T. M.
Gay Freres S.A.
Oliver Milton
Saadat Mahshid D.
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