US20120250282A1 - Fastening and electroconductive connecting of a chip module to a chip card - Google Patents
Fastening and electroconductive connecting of a chip module to a chip card Download PDFInfo
- Publication number
- US20120250282A1 US20120250282A1 US13/515,306 US201013515306A US2012250282A1 US 20120250282 A1 US20120250282 A1 US 20120250282A1 US 201013515306 A US201013515306 A US 201013515306A US 2012250282 A1 US2012250282 A1 US 2012250282A1
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- US
- United States
- Prior art keywords
- chip
- elastomeric material
- card body
- card
- chip module
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- Abandoned
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
- H01L2224/16227—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation the bump connector connecting to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
Definitions
- the present invention relates to a method for manufacturing a chip card by electroconductively connecting a chip module to a chip-card body, and to such a chip card.
- a further disadvantage of such connections between chip module and chip-card body is the relatively fast solidification of the silicone, by which its adhesive properties are irrevocably lost, so that the chip module can only be placed contactingly onto the card body and not be applied adhesively.
- a simultaneous applying of the silicone to the chip-card body and of the chip module to the not yet solidified silicone is impossible for process reasons, on the other hand.
- the object of the present invention is hence to establish a lastingly robust, electroconductive connection between chip module and chip-card body.
- a chip card is manufactured by incorporating a chip module into a chip-card body.
- a chip module is connected electroconductively to a chip-card body.
- the chip module according to the invention, is connected to the chip-card body adhesively by means of a thermoplastic, electroconductive elastomeric material such that the chip module is at the same time electroconductively connected to the at least one electrical contact area of the chip-card body.
- each contact point there can respectively be produced for each contact point to be contacted two adhesive connections, namely that between the elastomeric material and the contact area, and that between elastomeric material and the chip module.
- These adhesive connections as well as the elastomeric material are at the same time electroconductive.
- the chip module is connected to the chip-card body adhesively by means of the elastomeric material such that the chip module is electroconductively connected to at least one electrical contact area.
- a less flexible elastomeric material is sufficient for ensuring a stable electroconductive connection between chip module and contact area.
- the essential criterion for the lastingness of the electroconductive connection is the strength of the adhesive connection.
- a silicone, in particular a thermoplastic silicone, of average or low flexibility can be employed for a both-sided adhesive connection in order to flexibly compensate mechanical stresses, such as e.g. bends and twists.
- thermoplastic elastomers guarantee a very high flexibility over a wide temperature range and over a long time period, so that a very robust electroconductive connection can be established between the chip module and the chip-card body with thermoplastic, electroconductive elastomers.
- the chip card is a contactless chip card, i.e. a chip card with a contactless data transfer interface, or a dual interface chip card, i.e. a chip card with a contact-type and contactless data transfer interface, e.g. with an antenna set in the chip-card body.
- the antenna is then connected to the chip module via the electroconductive, both-sided adhesive elastomeric material.
- heated and melted elastomeric material can first be applied adhesively at least to one contact area of the chip-card body and solidify at least partly.
- the already solidified elastomer can be heated and melted again at least partly and thus be made adhesive, and the chip module can be applied adhesively to the elastomeric material.
- a chip-card body in which there is located a depression into which a chip module is inserted.
- the depression there is located at least one contact area in order to establish an electroconductive connection to a corresponding contact area of the chip module, whereby the chip module has at least one contact area.
- the elastomeric material is first heated and melted to a temperature at which it can enter into an adhesive connection with the contact areas of the chip-card body, and is then applied to the relevant contact areas. The elastomeric material then quickly cools and thereby solidifies at least partly. Subsequently, the chip module is so inserted that the elastomeric material touches contact areas of the chip module.
- the elastomeric material is heated and melted again up to a suitable temperature through the chip-card body and/or the chip module, at least at those places on the surface where an adhesive connection to the contact areas of the chip module is to be established, so that a further adhesive connection is formed between the elastomeric material and the contact areas of the chip module.
- an electroconductive connection is established between the contact areas of the chip module and the contact areas of the chip-card body.
- the heated and melted elastomeric material is first applied to the chip module and solidifies there at least partly. After the chip module has been inserted into the chip-card body, the elastomer is partly heated and melted again through the chip module and/or the chip-card body in order to establish a further adhesive connection with the contact areas of the chip-card body.
- the elastomeric material is thus first heated and melted to a temperature at which it can enter into an adhesive connection with the chip module, and then applied to the chip module, where it quickly cools and solidifies.
- the elastomeric material is, at an almost arbitrary later time, heated and melted again to a suitable temperature through the chip module and/or the chip-card body, at least at those places on the surface where it is to enter into an adhesive connection with the chip-card body, in order to establish a further adhesive connection to the contact areas of the chip-card body.
- electroconductive connection between the chip module and the contact area of the chip-card body via the electroconductive elastomeric material.
- the elastomeric material is preferably applied adhesively with a conventional metering unit for hot-melt adhesives (“hot melts”) or an injection molding machine.
- hot melts hot-melt adhesives
- the elastomeric material can also be made available in the form of a foil.
- the latter is preferably heated and melted to a temperature that is suitable for forming a corresponding adhesive connection, and then first applied adhesively to the contact areas of the chip-card body or to the contact areas of the chip module.
- the chip module is then inserted into the chip-card body, and a further adhesive connection to the contacts of the chip module or of the chip-card body is established by repeated heating and melting of the elastomeric material through the chip-card body and/or the chip module.
- thermoplastic electroconductive elastomeric material there comes into consideration in particular an elastomeric material with electroconductive filler.
- a thermoplastic silicone in particular a silicone of the type GENIOMER ⁇ from Wacker Chemie AG, to which an electroconductive filler is preferably added.
- the elastomeric material provides the necessary adhesion, is sufficiently stable and long-lived and possesses a relatively uniform elasticity over a wide temperature range and a long life.
- an elastomeric material of the GENIOMER ⁇ type possesses a wide temperature range and a very good elasticity in particular also at low temperatures.
- an elastomeric material that can enter into an adhesive connection with the chip module and/or the chip-card body, upon adhesive connecting of the chip module on the chip-card body, at temperatures that lie below a maximum temperature load on the chip module and/or the chip-card body. This avoids damaging of the chip module or the chip-card body by the new heating and adhesive applying of the heated and melted elastomeric material.
- an elastomeric material wherein the mechanical loading capacity of the adhesive connection between the chip module and the chip-card body is optimized.
- an elastomeric material to which one or several suitable additives are admixed.
- an adhesion promoter so-called primer
- a primer can be applied on the surface of the contacts of chip module and/or chip-card body.
- FIG. 1 a chip card according to the invention
- FIG. 2 steps of a method sequence for manufacturing the chip card according to FIG. 1 ;
- FIG. 3 steps of an alternative method sequence for manufacturing the chip card according to FIG. 1 .
- FIG. 1 shows schematically such a chip card 1 with a chip module 6 which is connected adhesively to the chip-card body 2 by means of a thermoplastic, electroconductive elastomeric material 5 , whereby the chip module 6 is conductively connected by the elastomeric material 5 at the same time to the electrical contact areas 2 b of the chip-card body 2 .
- the chip-card body 2 of the chip card 1 is constructed according to FIG. 1 from different layers indicated by parallel lines.
- an antenna layer 2 a which can be realized e.g. as an imprinted coil, i.e. as an electroconductive imprint in the form of a coil serving as an antenna, or the like.
- the chip-card body 2 possesses a recess 4 (cf. FIGS. 2 a to 2 c ) into which the chip module 6 is inserted.
- the flex bumps 5 are connected adhesively and at the same time electroconductively to contact areas 2 b of the coil layer 2 a of the chip-card body 2 and the chip module 6 , and thereby simultaneously ensure an adhesive and an electroconductive connection between these two components 2 b, 6 .
- the contact areas 2 b of the coil layer 2 a represent the accessible places of the coil layer 2 a which are formed in the chip-card body 2 by deeper recesses at various points.
- the contact areas 2 b can also be specially configured, e.g. be provided with an especially highly electroconductive coating, or the like.
- the contact areas 2 b, as contact areas of the chip-card body 2 need not be connected electroconductively to a coil layer 2 a, but can be connected electroconductively to arbitrary electrical components of the chip-card body 2 , e.g. to a current source.
- the flex bumps 5 can be connected adhesively not only to the contact areas 2 b but also to further places of the chip-card body 2 in order to produce an especially robust adhesive connection.
- the contact area 2 b forms only a part of the area with which the flex bump 5 is adhesively connected to the chip-card body 2 .
- the chip module 6 To activate the coil layer 2 a or, in the general case, the corresponding electrical component of the chip-card body 2 , the chip module 6 likewise possesses contact areas (not represented) which are connected by the flex bumps 5 suitably to the coil layer 2 a or, in the general case, to the corresponding electrical component of the chip-card body 2 .
- the chip-card body 2 of the chip card 1 is particularly preferably configured in a format according to ISO 7816.
- the chip card 1 is a chip card 1 with a contactless interface, e.g. a dual interface chip card with a contactless and contact-type interface for data transfer.
- FIG. 2 illustrates a preferred method sequence for manufacturing the chip card 1 of FIG. 1 .
- a suitable chip-card body 2 which is of multilayer construction and comprises an antenna layer 2 a.
- the chip-card body 2 there is provided a recess 4 for insertion of a chip module 6 , whereby via the recess 4 the contact areas 2 b of the antenna layer 2 a are accessible through deeper recesses at various points.
- FIG. 2 b shows how the heated and melted elastomeric material 5 is applied to the contact area 2 b by means of the application tool 10 after being previously heated and melted to a temperature at which it can enter into a conductive connection with the contact areas 2 b.
- the elastomeric material 5 is suitably metered and applied in a sufficiently precisely defined form in order to avoid e.g. short circuits.
- the elastomeric material 5 can also be made available in the form of a foil, heated and melted and then applied. Through the applying of the heated and melted elastomeric material 5 there arises an adhesive connection of the elastomeric material 5 to the contact area 2 b.
- the applied elastomeric material 5 cools and solidifies at least partly, so that it cannot enter into any further adhesive connection.
- the chip module 6 is incorporated into the recess 4 such that the electroconductive elastomeric material 5 lies opposite the chip module 6 in the form of flex bumps, see FIG. 2 c.
- the applied elastomeric material 5 is, in FIG. 2 d, heated and melted again through the chip module 6 with a heating tool 11 at an almost arbitrary later time.
- the elastomeric material can also be heated and melted through the chip-card body 2 .
- FIG. 3 shows an alternative method for manufacturing the chip card 1 represented in FIG. 1 .
- This method differs from the method represented in FIG. 2 in that the heated and melted elastomeric material 5 is not applied with the application tool 10 to the contact areas 2 b of the chip-card body 2 , as in FIG. 2 b, but to the chip module 6 , as represented in FIG. 3 a.
- the metering and shaping of the elastomeric material can be effected as described in connection with FIG. 2 b.
- the elastomeric material can also alternatively be made available in the form of a foil, heated and melted and then applied.
- the temperature of the heated and melted elastomeric material 5 is chosen such that it enters into an adhesive connection with the chip module 6 and does not damage the chip module 6 .
- the chip module 6 with the elastomeric material 5 in the form of flex bumps is inserted into the chip-card body 2 , so that the flex bumps 5 and the contact areas 2 b of the coil layer 2 a oppose each other.
- the cooled and at least partly solidified elastomeric material is heated and melted again through the chip module 6 to a suitable temperature, in order that it can enter into an adhesive connection with the contact areas 2 b of the chip-card body 2 .
- the elastomeric material can also be heated and melted through the chip-card body 2 . This causes, in analogy to the method represented in FIG.
- the chip card 1 produced by this alternative method is represented in FIG. 3 c and corresponds to the chip card 1 represented in FIG. 2 d and FIG. 1 .
- an elastomeric material 5 that can enter into an adhesive connection with the chip module 6 and/or the chip-card body 2 at temperatures that lie below a maximum temperature load on the chip module 6 and/or the chip-card body 2 .
- the maximum temperature load is normally not the same for the total chip module 6 or the total chip-card body 2 , not the total chip module 6 or the total chip-card body 2 needs to be able to withstand the temperature of the heated and melted elastomeric material 5 , but preferably only those parts that come into contact with the heated elastomeric material 5 or lie in the proximity thereof.
- a chip protected by the housing of the chip module 6 must for example only withstand an accordingly lower temperature load, which depends on different parameters, such as e.g.
- the amount of applied heated and melted elastomeric material 5 is the amount of applied heated and melted elastomeric material 5 .
- the elastomeric material 5 can enter into an adhesive connection with the chip module 6 and/or the chip-card body 2 at temperatures that lie below a maximum temperature load on the chip module 6 and/or the chip-card body 2 .
- an application tool 10 there can be used for both methods a conventional metering unit for hot-melt adhesives (“hot melts”) or an injection molding machine If such a metering unit for hot-melt adhesives is employed, one must make sure that the heated and melted elastomeric material 5 to be applied has a sufficient homogeneity in order for it to be processable without defects.
- a conventional metering unit for hot-melt adhesives (“hot melts”) or an injection molding machine
- an injection molding machine there is preferably employed a machine that works in the vertical direction, i.e. that applies the elastomeric material 5 in the vertical direction (in particular from above).
- thermoplastic electroconductive elastomeric material 5 there comes into consideration in both methods in particular an elastomeric material 5 with electroconductive filler.
- thermoplastic silicone in particular a silicone of the type GENIOMER ⁇ from Wacker Chemie AG, to which an electroconductive filler is preferably added.
- the strength of the adhesive connection of the elastomeric material 5 to the chip module 6 and the chip-card body 2 can be optimized in both methods, in particular by optimizing the elastomeric material 5 .
- the condition of the corresponding surfaces of the chip module 6 and of the chip-card body 2 (in particular of the contact areas 2 b of the chip-card body 2 ) can be optimized, for example again by a corresponding additive and/or by applying an adhesion promoter.
- the chip-card bodies 2 are preferably automatically supplied with the application tool 10 and/or the heating tool 11 and/or further tools or machines, and withdrawn therefrom, either in line, i.e. e.g. by assembly line, or also individually, i.e. e.g. by means of a robot.
- the method of the invention is suitable not only for adhesive connecting with simultaneous electroconductive contacting of a chip-card module 6 to a chip-card body 2 , but also for adhesive connecting with simultaneous electroconductive contacting of other components, in particular arbitrary portable data carriers with chip modules and/or other components.
Abstract
Description
- The present invention relates to a method for manufacturing a chip card by electroconductively connecting a chip module to a chip-card body, and to such a chip card.
- It is known to electroconductively connect chip modules of chip cards by means of electroconductive silicone to contact areas of a chip-card body. The silicone is for this purpose applied adhesively to any contact areas of the chip-card body and solidifies, thereby producing a silicone elevation, referred to as a flex bump, onto which the chip module is subsequently placed such that there arises an electroconductive connection to the chip module, which connection can flexibly compensate bends and twists of the finished chip card.
- However, the silicone loses this flexibility in the course of time, which might also cause the electrical connection to be lost. This is problematic in particular with long-lived high-quality chip cards.
- A further disadvantage of such connections between chip module and chip-card body is the relatively fast solidification of the silicone, by which its adhesive properties are irrevocably lost, so that the chip module can only be placed contactingly onto the card body and not be applied adhesively. A simultaneous applying of the silicone to the chip-card body and of the chip module to the not yet solidified silicone is impossible for process reasons, on the other hand.
- The object of the present invention is hence to establish a lastingly robust, electroconductive connection between chip module and chip-card body.
- This object is achieved by a method and by a chip card having the features of the independent claims. In claims dependent thereon there are stated advantageous embodiments and developments of the invention.
- A chip card is manufactured by incorporating a chip module into a chip-card body. In chip cards requiring an electroconductive connection between contact areas of the chip-card body and the chip module, e.g. for connecting an antenna integrated into the chip card, a chip module is connected electroconductively to a chip-card body. For this purpose, the chip module, according to the invention, is connected to the chip-card body adhesively by means of a thermoplastic, electroconductive elastomeric material such that the chip module is at the same time electroconductively connected to the at least one electrical contact area of the chip-card body.
- Thus, there can respectively be produced for each contact point to be contacted two adhesive connections, namely that between the elastomeric material and the contact area, and that between elastomeric material and the chip module. These adhesive connections as well as the elastomeric material are at the same time electroconductive. In thus manufactured chip cards, the chip module is connected to the chip-card body adhesively by means of the elastomeric material such that the chip module is electroconductively connected to at least one electrical contact area.
- Because the elastomeric material is adhesively connected to the chip module as well as to the chip-card body or to its contact areas, a less flexible elastomeric material is sufficient for ensuring a stable electroconductive connection between chip module and contact area. The essential criterion for the lastingness of the electroconductive connection is the strength of the adhesive connection. For this reason, a silicone, in particular a thermoplastic silicone, of average or low flexibility can be employed for a both-sided adhesive connection in order to flexibly compensate mechanical stresses, such as e.g. bends and twists.
- Moreover, certain thermoplastic elastomers guarantee a very high flexibility over a wide temperature range and over a long time period, so that a very robust electroconductive connection can be established between the chip module and the chip-card body with thermoplastic, electroconductive elastomers.
- Preferably, the chip card is a contactless chip card, i.e. a chip card with a contactless data transfer interface, or a dual interface chip card, i.e. a chip card with a contact-type and contactless data transfer interface, e.g. with an antenna set in the chip-card body. The antenna is then connected to the chip module via the electroconductive, both-sided adhesive elastomeric material.
- For adhesively connecting the chip module to the chip-card body, heated and melted elastomeric material can first be applied adhesively at least to one contact area of the chip-card body and solidify at least partly. At an arbitrary later time, the already solidified elastomer can be heated and melted again at least partly and thus be made adhesive, and the chip module can be applied adhesively to the elastomeric material.
- According to the invention there is made available a chip-card body in which there is located a depression into which a chip module is inserted. In the depression there is located at least one contact area in order to establish an electroconductive connection to a corresponding contact area of the chip module, whereby the chip module has at least one contact area. For this purpose, the elastomeric material is first heated and melted to a temperature at which it can enter into an adhesive connection with the contact areas of the chip-card body, and is then applied to the relevant contact areas. The elastomeric material then quickly cools and thereby solidifies at least partly. Subsequently, the chip module is so inserted that the elastomeric material touches contact areas of the chip module. To be able to enter into a further adhesive connection with the contact areas of the chip module, the elastomeric material is heated and melted again up to a suitable temperature through the chip-card body and/or the chip module, at least at those places on the surface where an adhesive connection to the contact areas of the chip module is to be established, so that a further adhesive connection is formed between the elastomeric material and the contact areas of the chip module. Thus, an electroconductive connection is established between the contact areas of the chip module and the contact areas of the chip-card body.
- In a modified method, the heated and melted elastomeric material is first applied to the chip module and solidifies there at least partly. After the chip module has been inserted into the chip-card body, the elastomer is partly heated and melted again through the chip module and/or the chip-card body in order to establish a further adhesive connection with the contact areas of the chip-card body.
- The elastomeric material is thus first heated and melted to a temperature at which it can enter into an adhesive connection with the chip module, and then applied to the chip module, where it quickly cools and solidifies. After the chip module has been inserted into the chip-card body, the elastomeric material is, at an almost arbitrary later time, heated and melted again to a suitable temperature through the chip module and/or the chip-card body, at least at those places on the surface where it is to enter into an adhesive connection with the chip-card body, in order to establish a further adhesive connection to the contact areas of the chip-card body. There thus arises an electroconductive connection between the chip module and the contact area of the chip-card body via the electroconductive elastomeric material.
- The elastomeric material is preferably applied adhesively with a conventional metering unit for hot-melt adhesives (“hot melts”) or an injection molding machine.
- Alternatively, the elastomeric material can also be made available in the form of a foil. The latter is preferably heated and melted to a temperature that is suitable for forming a corresponding adhesive connection, and then first applied adhesively to the contact areas of the chip-card body or to the contact areas of the chip module. After solidification of the elastomeric material, the chip module is then inserted into the chip-card body, and a further adhesive connection to the contacts of the chip module or of the chip-card body is established by repeated heating and melting of the elastomeric material through the chip-card body and/or the chip module.
- As a thermoplastic, electroconductive elastomeric material there comes into consideration in particular an elastomeric material with electroconductive filler. Particularly preferably there is employed a thermoplastic silicone, in particular a silicone of the type GENIOMER© from Wacker Chemie AG, to which an electroconductive filler is preferably added.
- The elastomeric material provides the necessary adhesion, is sufficiently stable and long-lived and possesses a relatively uniform elasticity over a wide temperature range and a long life. In contrast to some classic thermoplastic elastomers based on styrene or polyolefin, which have a restricted elasticity over a wide temperature range or solidify at excessively low temperatures, an elastomeric material of the GENIOMER© type possesses a wide temperature range and a very good elasticity in particular also at low temperatures.
- Particularly preferably, there is employed an elastomeric material that can enter into an adhesive connection with the chip module and/or the chip-card body, upon adhesive connecting of the chip module on the chip-card body, at temperatures that lie below a maximum temperature load on the chip module and/or the chip-card body. This avoids damaging of the chip module or the chip-card body by the new heating and adhesive applying of the heated and melted elastomeric material.
- Likewise preferably, there is employed an elastomeric material wherein the mechanical loading capacity of the adhesive connection between the chip module and the chip-card body is optimized. In particular, there can be employed an elastomeric material to which one or several suitable additives are admixed.
- For improving the adhesion, an adhesion promoter, so-called primer, can be applied on the surface of the contacts of chip module and/or chip-card body.
- Further features and advantages of the invention will result from the following description of the embodiment examples of the invention as well as further alternative embodiments in connection with the drawings, which show:
-
FIG. 1 a chip card according to the invention; -
FIG. 2 steps of a method sequence for manufacturing the chip card according toFIG. 1 ; and -
FIG. 3 steps of an alternative method sequence for manufacturing the chip card according toFIG. 1 . - While
FIGS. 2 and 3 illustrate two alternative methods for manufacturing achip card 1,FIG. 1 shows schematically such achip card 1 with achip module 6 which is connected adhesively to the chip-card body 2 by means of a thermoplastic, electroconductiveelastomeric material 5, whereby thechip module 6 is conductively connected by theelastomeric material 5 at the same time to theelectrical contact areas 2 b of the chip-card body 2. - The chip-
card body 2 of thechip card 1 is constructed according toFIG. 1 from different layers indicated by parallel lines. In the chip-card body 2 there is incorporated anantenna layer 2 a, which can be realized e.g. as an imprinted coil, i.e. as an electroconductive imprint in the form of a coil serving as an antenna, or the like. Furthermore, the chip-card body 2 possesses a recess 4 (cf.FIGS. 2 a to 2 c) into which thechip module 6 is inserted. Below thechip module 6 there are located within therecess 4 two flex-bump structures 5 made of a thermoplastic, electroconductive silicone. Theflex bumps 5 are connected adhesively and at the same time electroconductively to contactareas 2 b of thecoil layer 2 a of the chip-card body 2 and thechip module 6, and thereby simultaneously ensure an adhesive and an electroconductive connection between these twocomponents - In the embodiment example of
FIG. 1 , thecontact areas 2 b of thecoil layer 2 a represent the accessible places of thecoil layer 2 a which are formed in the chip-card body 2 by deeper recesses at various points. Alternatively, thecontact areas 2 b can also be specially configured, e.g. be provided with an especially highly electroconductive coating, or the like. Quite generally, thecontact areas 2 b, as contact areas of the chip-card body 2, need not be connected electroconductively to acoil layer 2 a, but can be connected electroconductively to arbitrary electrical components of the chip-card body 2, e.g. to a current source. Moreover, theflex bumps 5 can be connected adhesively not only to thecontact areas 2 b but also to further places of the chip-card body 2 in order to produce an especially robust adhesive connection. In this case, thecontact area 2 b forms only a part of the area with which theflex bump 5 is adhesively connected to the chip-card body 2. - To activate the
coil layer 2 a or, in the general case, the corresponding electrical component of the chip-card body 2, thechip module 6 likewise possesses contact areas (not represented) which are connected by the flex bumps 5 suitably to thecoil layer 2 a or, in the general case, to the corresponding electrical component of the chip-card body 2. - The chip-
card body 2 of thechip card 1 is particularly preferably configured in a format according to ISO 7816. Particularly preferably, thechip card 1 is achip card 1 with a contactless interface, e.g. a dual interface chip card with a contactless and contact-type interface for data transfer. -
FIG. 2 illustrates a preferred method sequence for manufacturing thechip card 1 ofFIG. 1 . There is first made available here inFIG. 2 a a suitable chip-card body 2 which is of multilayer construction and comprises anantenna layer 2 a. In the chip-card body 2 there is provided arecess 4 for insertion of achip module 6, whereby via therecess 4 thecontact areas 2 b of theantenna layer 2 a are accessible through deeper recesses at various points. -
FIG. 2 b shows how the heated and meltedelastomeric material 5 is applied to thecontact area 2 b by means of theapplication tool 10 after being previously heated and melted to a temperature at which it can enter into a conductive connection with thecontact areas 2 b. In so doing, theelastomeric material 5 is suitably metered and applied in a sufficiently precisely defined form in order to avoid e.g. short circuits. Quite generally, there can be employed for applying theelastomeric material 5, inter alia, a conventional metering unit for hot-melt adhesives or an injection molding machine Alternatively, theelastomeric material 5 can also be made available in the form of a foil, heated and melted and then applied. Through the applying of the heated and meltedelastomeric material 5 there arises an adhesive connection of theelastomeric material 5 to thecontact area 2 b. - Subsequently, the applied
elastomeric material 5 cools and solidifies at least partly, so that it cannot enter into any further adhesive connection. Subsequently, thechip module 6 is incorporated into therecess 4 such that the electroconductiveelastomeric material 5 lies opposite thechip module 6 in the form of flex bumps, seeFIG. 2 c. To establish a further adhesive connection to thechip module 6, the appliedelastomeric material 5 is, inFIG. 2 d, heated and melted again through thechip module 6 with aheating tool 11 at an almost arbitrary later time. Alternatively, the elastomeric material can also be heated and melted through the chip-card body 2. In so doing, it is heated and melted to a temperature at which it can enter into a further adhesive connection with thechip module 6, on the one hand, and does not damage the chip-card body 2 or thechip module 6, on the other hand. It is sufficient here if theelastomeric material 5 is heated and melted to this temperature on the surface that is to enter into a further adhesive connection with thechip module 6. Simultaneously with the establishment of an adhesive connection, an electroconductive connection is established between thechip module 6 and thecontact areas 2 b. Thefinished chip card 1 with the inserted as well as adhesively and conductivelyconnected chip module 6 is shown inFIG. 2 d and corresponds to thechip card 1 represented inFIG. 1 . -
FIG. 3 shows an alternative method for manufacturing thechip card 1 represented inFIG. 1 . This method differs from the method represented inFIG. 2 in that the heated and meltedelastomeric material 5 is not applied with theapplication tool 10 to thecontact areas 2 b of the chip-card body 2, as inFIG. 2 b, but to thechip module 6, as represented inFIG. 3 a. The metering and shaping of the elastomeric material can be effected as described in connection withFIG. 2 b. In analogy to the method step described inFIG. 2 b, the elastomeric material can also alternatively be made available in the form of a foil, heated and melted and then applied. The temperature of the heated and meltedelastomeric material 5 is chosen such that it enters into an adhesive connection with thechip module 6 and does not damage thechip module 6. - Subsequently, in
FIG. 3 b, thechip module 6 with theelastomeric material 5 in the form of flex bumps is inserted into the chip-card body 2, so that the flex bumps 5 and thecontact areas 2 b of thecoil layer 2 a oppose each other. InFIG. 3 c, in analogy to the method step represented inFIG. 2 c, the cooled and at least partly solidified elastomeric material is heated and melted again through thechip module 6 to a suitable temperature, in order that it can enter into an adhesive connection with thecontact areas 2 b of the chip-card body 2. Alternatively, the elastomeric material can also be heated and melted through the chip-card body 2. This causes, in analogy to the method represented inFIG. 2 , an electroconductive connection to be established between thechip module 6 and thecontact areas 2 b at the same time. Thechip card 1 produced by this alternative method is represented inFIG. 3 c and corresponds to thechip card 1 represented inFIG. 2 d andFIG. 1 . - In both methods there is employed an
elastomeric material 5 that can enter into an adhesive connection with thechip module 6 and/or the chip-card body 2 at temperatures that lie below a maximum temperature load on thechip module 6 and/or the chip-card body 2. Because the maximum temperature load is normally not the same for thetotal chip module 6 or the total chip-card body 2, not thetotal chip module 6 or the total chip-card body 2 needs to be able to withstand the temperature of the heated and meltedelastomeric material 5, but preferably only those parts that come into contact with the heatedelastomeric material 5 or lie in the proximity thereof. A chip protected by the housing of thechip module 6 must for example only withstand an accordingly lower temperature load, which depends on different parameters, such as e.g. the amount of applied heated and meltedelastomeric material 5. To ensure that theelastomeric material 5 can enter into an adhesive connection with thechip module 6 and/or the chip-card body 2 at temperatures that lie below a maximum temperature load on thechip module 6 and/or the chip-card body 2, one can optimize theelastomeric material 5 in its composition, as well as the components and the construction of thechip module 6 and/or of the chip-card body 2, as well as further parameters, such as e.g. by suitable additives or the like. - As an
application tool 10 there can be used for both methods a conventional metering unit for hot-melt adhesives (“hot melts”) or an injection molding machine If such a metering unit for hot-melt adhesives is employed, one must make sure that the heated and meltedelastomeric material 5 to be applied has a sufficient homogeneity in order for it to be processable without defects. As an injection molding machine there is preferably employed a machine that works in the vertical direction, i.e. that applies theelastomeric material 5 in the vertical direction (in particular from above). - As a thermoplastic, electroconductive
elastomeric material 5 there comes into consideration in both methods in particular anelastomeric material 5 with electroconductive filler. Particularly preferably, there is employed a thermoplastic silicone, in particular a silicone of the type GENIOMER© from Wacker Chemie AG, to which an electroconductive filler is preferably added. - The strength of the adhesive connection of the
elastomeric material 5 to thechip module 6 and the chip-card body 2 can be optimized in both methods, in particular by optimizing theelastomeric material 5. In particular, there can be employed anelastomeric material 5 to which one or several suitable additives are admixed and/or on whose surface an adhesion promoter is applied. Likewise, the condition of the corresponding surfaces of thechip module 6 and of the chip-card body 2 (in particular of thecontact areas 2 b of the chip-card body 2) can be optimized, for example again by a corresponding additive and/or by applying an adhesion promoter. - In both methods, the chip-
card bodies 2 are preferably automatically supplied with theapplication tool 10 and/or theheating tool 11 and/or further tools or machines, and withdrawn therefrom, either in line, i.e. e.g. by assembly line, or also individually, i.e. e.g. by means of a robot. - The method of the invention is suitable not only for adhesive connecting with simultaneous electroconductive contacting of a chip-
card module 6 to a chip-card body 2, but also for adhesive connecting with simultaneous electroconductive contacting of other components, in particular arbitrary portable data carriers with chip modules and/or other components.
Claims (17)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009058435.8 | 2009-12-16 | ||
DE102009058435A DE102009058435A1 (en) | 2009-12-16 | 2009-12-16 | Attaching and electrically connecting a chip module to a chip card |
PCT/EP2010/007580 WO2011082765A1 (en) | 2009-12-16 | 2010-12-13 | Fixing and connecting a chip module to a chip card in an electrically conductive manner |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/007580 A-371-Of-International WO2011082765A1 (en) | 2009-12-16 | 2010-12-13 | Fixing and connecting a chip module to a chip card in an electrically conductive manner |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/750,749 Continuation US11055596B2 (en) | 2009-12-16 | 2020-01-23 | Method of fastening and electroconductive connecting a chip module to a chip card |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120250282A1 true US20120250282A1 (en) | 2012-10-04 |
Family
ID=43646222
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/515,306 Abandoned US20120250282A1 (en) | 2009-12-16 | 2010-12-13 | Fastening and electroconductive connecting of a chip module to a chip card |
US16/750,749 Active US11055596B2 (en) | 2009-12-16 | 2020-01-23 | Method of fastening and electroconductive connecting a chip module to a chip card |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/750,749 Active US11055596B2 (en) | 2009-12-16 | 2020-01-23 | Method of fastening and electroconductive connecting a chip module to a chip card |
Country Status (6)
Country | Link |
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US (2) | US20120250282A1 (en) |
EP (1) | EP2513845B1 (en) |
CN (1) | CN102652320B (en) |
DE (1) | DE102009058435A1 (en) |
ES (1) | ES2440774T3 (en) |
WO (1) | WO2011082765A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10355371B2 (en) | 2017-03-03 | 2019-07-16 | Microsoft Technology Licensing, Llc | Flexible conductive bonding |
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DE102012211546B4 (en) | 2012-07-03 | 2017-02-16 | Morpho Cards Gmbh | Chip card with paste-like or liquid contacting at room temperature |
RU2607725C1 (en) * | 2015-08-06 | 2017-01-10 | Общество с ограниченной ответственностью "Интеллектуальные Системы Управления Бизнесом" | Smart card with dual interface and its manufacturing method |
RU2629143C1 (en) * | 2016-07-21 | 2017-08-24 | Общество с ограниченной ответственностью "Интеллектуальные Системы Управления Бизнесом" | Plastic keychain with full-colour printing, equipped with built-in rfid-tag, and method of its manufacture |
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Also Published As
Publication number | Publication date |
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CN102652320B (en) | 2015-07-29 |
EP2513845A1 (en) | 2012-10-24 |
US11055596B2 (en) | 2021-07-06 |
US20200160138A1 (en) | 2020-05-21 |
CN102652320A (en) | 2012-08-29 |
EP2513845B1 (en) | 2013-11-06 |
WO2011082765A1 (en) | 2011-07-14 |
ES2440774T3 (en) | 2014-01-30 |
DE102009058435A1 (en) | 2011-06-22 |
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