WO2001009828A1 - Procede de fabrication d'une carte a puce a contact - Google Patents
Procede de fabrication d'une carte a puce a contact Download PDFInfo
- Publication number
- WO2001009828A1 WO2001009828A1 PCT/FR2000/002048 FR0002048W WO0109828A1 WO 2001009828 A1 WO2001009828 A1 WO 2001009828A1 FR 0002048 W FR0002048 W FR 0002048W WO 0109828 A1 WO0109828 A1 WO 0109828A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chip
- manufacturing
- contact pads
- cavity
- conductive material
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract description 30
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 238000007639 printing Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims description 31
- 239000011810 insulating material Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
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- 238000004132 cross linking Methods 0.000 claims description 2
- 239000013528 metallic particle Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000001465 metallisation Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000007650 screen-printing Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 235000012431 wafers Nutrition 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005844 autocatalytic reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4867—Applying pastes or inks, e.g. screen printing
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- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49855—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers for flat-cards, e.g. credit cards
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Definitions
- the present invention relates to a method of manufacturing a storage medium of the smart card type with flush contact pads.
- Chip cards are intended for carrying out various operations, such as, for example, banking operations, telephone communications or various identification operations.
- Contact cards include metallizations flush with the surface of the card, arranged at a precise location on the card body, defined by the usual standard ISO 7816. These metallizations are intended to come into contact with a read head of a reader for electrical data transmission.
- a conventional method illustrated in FIG. 1, consists in bonding an integrated circuit chip 20 by placing its active face with its contact pads 22 upwards, and by bonding the opposite face to a dielectric support sheet 28.
- the dielectric sheet 28 is itself disposed on a contact grid 24 of a metal plate, for example made of nickel-plated and gilded copper.
- Connection wells 21 are formed in the dielectric sheet 28 and connection wires 26 connect the contact pads 22 of the chip 20 to the contact pads of the grid 24 via the connection wells 21. Finally, an encapsulation resin 30, to epoxy base, protects the chip 20 and the connection wires 26 welded. The micromodule is then cut and then inserted into the cavity of a previously decorated card body.
- An object of the present invention is therefore to manufacture a smart card at a reduced price, in particular by eliminating the step of producing the micromodule which requires the use of a metal plate.
- a first solution consists in inserting an integrated circuit chip directly into a card body. For this, the card holder is locally softened and the chip is pressed in the softened area. No cavity is therefore formed in the card body.
- a card obtained using this technology is shown diagrammatically in plan view in FIG. 2.
- the chip 20 is arranged so that its contact pads 22 are flush with the surface of the card 100. Screen printing operations then make it possible to print, on the same plan, beaches of contact 25 and interconnection tracks 27 making it possible to connect the contact pads 25 to the contact pads 22 of the chip 20.
- a protective varnish is then applied to the chip 20 as well as to the connections between the contact pads 22 of the chip and the interconnection tracks 27.
- the chip 20 must be located perfectly flush with the card 100 because the screen printing process does not make it possible to produce a pattern of interconnection tracks 27 in three dimensions.
- the chip must also be perfectly positioned so that its contact pads 22 are arranged parallel to the lateral edges of the card 100 and make it possible to produce the contact pads 25 parallel to the lateral edges of the card.
- the chip being placed in a locally softened area, it is not easy to position it correctly, and the chip cards whose contact pads are arranged slightly at an angle are intended for scrap.
- the application of the conductive tracks in the housing can be carried out in different ways.
- a first way is to carry out hot stamping. For this, a sheet comprising metallizations of copper, optionally covered with tin or nickel, and provided with a hot-activatable glue, is cut and then glued hot in the housing.
- a second way consists in applying, by means of a pad, a lacquer containing a palladium catalyst, at the places intended to be metallized, and in heating the lacquer; then metallizing, by depositing copper and / or nickel, using an electrochemical process of autocatalysis.
- contact pads and connections are made by depositing metallizations which still use copper and / or nickel, which are expensive elements, so that the cost price of the cards remains very high.
- Chrysalis technology therefore calls for processes that are too complex and uses metal elements that are too expensive to be suitable for mass industrial production.
- the invention provides a method of manufacturing a storage medium of the chip card type with flush contacts which uses a jet of conductive material technology for producing the contact pads and for the tracks. interconnection, directly on the card body support.
- connection of the chip to the interconnection tracks can also be carried out by jet of conductive material.
- the invention relates to a method of manufacturing an electronic device, such as a chip card with flush contacts, characterized in that it comprises the following steps: production of a card body provided with a cavity having vertical planes and / or inclined planes; printing of contact pads and interconnection tracks by jet of drops of conductive material, the interconnection tracks extending in the cavity; transfer of an integrated circuit chip, contact pads upwards, into the cavity; - connection of the contact pads of the chip to the interconnection tracks.
- the connection of the chip to the interconnection tracks is carried out by jet of drops of conductive material.
- the steps of printing the contact pads and the interconnection and connection tracks of the chip to said tracks are carried out simultaneously by jet of drops of conductive material.
- the method further comprises a step of isolating the edges of the chip produced by spraying drops of insulating material so as to fill the gap between the chip and the walls of the cavity.
- the method further comprises a step of protecting the chip and its connections.
- the protection of the chip and its connections can be achieved by and drops of insulating material.
- the transfer of the chip is carried out by bonding by means of a thermal adhesive.
- the conductive material comprises metallic particles. According to another characteristic, the conductive material comprises a conductive polymer material.
- the insulating material comprises an ultraviolet crosslinking resin. According to another characteristic, the insulating material comprises a thermopolymerizable resin.
- the jets of drops of conductive and insulating material are produced by means of piezoelectric ejection heads.
- the invention also relates to a portable electronic device, of the chip card type with flush contact pads produced on a support body, at least one integrated circuit chip being electrically connected to the contact pads by interconnection tracks, characterized in that that the chip is disposed active face up in the cavity of the support body by presenting an interval around the chip, said interval being at least partially filled at least at the level of the connection passages to the interconnection tracks.
- the gap is filled, at least partially, with insulating material.
- the gap is filled, at least partially, with conductive material.
- the contact pads and the interconnection tracks consist of points of conductive material obtained by jet of material.
- the connection between the chip and the interconnection tracks consists of points of conductive material obtained by jet of material.
- the points of conductive material have a resolution greater than or equal to 60 Dpi.
- the manufacturing method according to the invention comprises only four steps: injecting the card body, printing the contact pads and interconnection tracks, transfer and connection of the chip.
- the chip can be transferred into the cavity of the card body before the printing step so as to make the connection of the chip simultaneously with the printing of the pattern of the contact pads and of the interconnection tracks.
- the method according to the invention also has the advantage of using digital technology for printing the pattern of the interconnection tracks. It is thus possible to compensate for the tolerances of positioning of the chip in the cavity of the card body. Indeed, with the prior techniques, of screen printing for example, a slight angular offset of the chip in the cavity can cause a much greater offset of the orientation of the contact pads. With inkjet technology, it is possible to automatically modify the pattern to be printed in order to compensate for such an offset by image processing. Such an adjustment is also possible at each chip positioning.
- the cavity of the card body has a lesser depth than that intended to receive a micromodule of conventional technology. It is thus possible to make thinner cards.
- FIG. 1, already described is a diagram in cross section which illustrates a traditional method of manufacturing smart cards with contacts
- FIG. 2, already described is a diagram from above of a smart card with contacts manufactured according to known technology
- - Figures 3a to 3e schematically illustrate the steps of the method according to a first embodiment of the invention
- Figures 4a to 4c schematically illustrate the steps of the method according to a second embodiment of the invention.
- FIGS. 3a to 3e illustrate the stages of the manufacturing process according to a first embodiment of the invention.
- a card body 100 provided with a cavity 120 is produced (FIG. 3a).
- the card body 100 can be produced according to a conventional method, for example, by injecting plastic material into a mold.
- the cavity 120 can be obtained either by machining the card body 100, or during manufacture by injection into a suitable mold.
- the cavity 120 may have vertical planes 122 and inclined planes 124.
- the vertical planes 122 have a height substantially equal to that of the chip 20 intended to be placed in said cavity 120.
- the contact pads 25 and the interconnection tracks 27 are then printed (FIG. 3b) by a jet of drops of conductive material.
- a jet of drops of conductive material Preferably, an ejection head comprising a plurality of nozzles using piezoelectric technology, or "piezo", is used to carry out the printing by jet of conductive material.
- piezoelectric technology or "piezo”
- piezo type ejection heads are currently among the fastest, and it is common to reach available frequencies of 12.24 and 40 kHz, which guarantees sufficiently rapid drop ejection speeds. for industrial applications.
- other ejection head technologies can be envisaged, such as thermal ejection heads, or deflected jet ejection heads, for example.
- the resolution of the nozzles of the ejection head chosen is preferably high, from 300 to 600 Dpi
- This resolution of the nozzles may however change with future technique.
- the jet of conductive material makes it possible to obtain fine and precise interconnection tracks 27, whatever the pattern.
- software controls the ejection head, the layout of which is programmable and easily modifiable.
- the interconnection tracks 27 extend into the cavity 120 so as to come closer to the studs of the chip to be transferred.
- the chip does not necessarily have to be located flush with the card body because the technique and material allows the printing of a three-dimensional pattern.
- the integrated circuit chip 20 is then transferred into the cavity 120 (FIG. 3c) by bonding, by means of a thermal adhesive for example. Depending on the applications, this adhesive can be insulating or conductive.
- the chip 20 is transferred with its contact pads 22 upwards.
- An interval appears between the edges of the chip 20 and the walls of the cavity 120, which can be at least partially filled 40.
- the wafer of the chip can be conductive, that is to say that the semiconductor used for its manufacture is conductive on the wafer.
- the gap must then be filled with insulating material, at least under the connection paths which will be made later to avoid any risk of short circuit.
- the insulation of the wafers of the chip may have been carried out previously according to any known technique, such as spraying for example.
- the filling of the interval can be carried out by jet of drops of insulating material.
- the material jet technique achieves the precision required to fill this gap.
- the jet of insulating material makes it possible to effectively control the thickness and the location of the protection 40 deposited.
- the edge of the chip is not conductive and filling the gap with an insulator is not essential.
- the coating resin deposited to protect the chip 20 and its connection wires will flow in the interval .
- the chip 20 is then connected to the interconnection tracks 27 (FIG. 3d).
- this connection 23 is made by jet of drops of conductive material which electrically connects the pads 22 of the chip to the interconnection tracks 27.
- each contact pad 22 opposite a supply of an interconnection track 27, it is still possible to connect them by checking the reason for connection 23 by Computer Aided Vision and by modifying, using software, the path of the ejection head.
- connection can nevertheless be envisaged to make the connections according to a conventional cabling technique. Wired. In such a case, the isolation of the edges of the chip 20 is not necessarily necessary.
- an additional protection step 45 can cover the chip 20 and its connections 23 flush with the card body 100.
- This protection 45 can be carried out according to conventional methods, such as for example the "glob top” which consists in delivering a drop of material for coating the chip 20 and the connections 23 from above, or by jet of material drops insulating.
- FIGS. 4a to 4c illustrate the steps of a second embodiment of the method according to the invention, in which the connection 23 of the chip 20 is carried out simultaneously with the printing of the contact pads 25 and the interconnection tracks 27 ( Figure 4c).
- the chip 20 is transferred to the cavity 120 of the card body 100, produced as described previously (FIG. 4a), before the printing step.
- the interval between the edges of the chip 20 and the walls of the cavity 120 is preferably filled 40 to avoid a flow of conductive material (FIG. 4b).
- This embodiment further reduces the number of steps in the manufacturing process.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Theoretical Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU67058/00A AU6705800A (en) | 1999-07-30 | 2000-07-13 | Method for making a smart card with contact |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9909972A FR2797076B1 (fr) | 1999-07-30 | 1999-07-30 | Procede de fabrication d4une carte a puce a contact |
FR99/09972 | 1999-07-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001009828A1 true WO2001009828A1 (fr) | 2001-02-08 |
Family
ID=9548751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/002048 WO2001009828A1 (fr) | 1999-07-30 | 2000-07-13 | Procede de fabrication d'une carte a puce a contact |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU6705800A (fr) |
FR (1) | FR2797076B1 (fr) |
WO (1) | WO2001009828A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9761511B2 (en) | 2015-04-24 | 2017-09-12 | Stmicroelectronics S.R.L. | Electronic components with integral lead frame and wires |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008541441A (ja) | 2005-05-11 | 2008-11-20 | ストミクロエレクトロニクス・ソシエテ・アノニム | 傾斜コンタクトパッドを有するシリコンチップ及びそのようなチップを備えた電子モジュール |
FR3035987A1 (fr) * | 2015-05-04 | 2016-11-11 | Starchip | Procede de fabrication d'une carte a puce par impression d'une encre conductrice |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5574309A (en) * | 1991-11-25 | 1996-11-12 | Gemplus Card International | Integrated circuit card comprising means for the protection of the integrated circuit |
US5647122A (en) * | 1994-06-15 | 1997-07-15 | U.S. Philips Corporation | Manufacturing method for an integrated circuit card |
DE19621044A1 (de) * | 1996-05-24 | 1997-11-27 | Giesecke & Devrient Gmbh | Verfahren zur Herstellung eines kartenförmigen Datenträgers |
FR2761497A1 (fr) * | 1997-03-27 | 1998-10-02 | Gemplus Card Int | Procede de fabrication d'une carte a puce ou analogue |
WO1998049653A1 (fr) * | 1997-05-01 | 1998-11-05 | Micron Communications, Inc. | Procede de formation de ci dans des substrats et circuits enfouis |
-
1999
- 1999-07-30 FR FR9909972A patent/FR2797076B1/fr not_active Expired - Fee Related
-
2000
- 2000-07-13 AU AU67058/00A patent/AU6705800A/en not_active Abandoned
- 2000-07-13 WO PCT/FR2000/002048 patent/WO2001009828A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5574309A (en) * | 1991-11-25 | 1996-11-12 | Gemplus Card International | Integrated circuit card comprising means for the protection of the integrated circuit |
US5647122A (en) * | 1994-06-15 | 1997-07-15 | U.S. Philips Corporation | Manufacturing method for an integrated circuit card |
DE19621044A1 (de) * | 1996-05-24 | 1997-11-27 | Giesecke & Devrient Gmbh | Verfahren zur Herstellung eines kartenförmigen Datenträgers |
FR2761497A1 (fr) * | 1997-03-27 | 1998-10-02 | Gemplus Card Int | Procede de fabrication d'une carte a puce ou analogue |
WO1998049653A1 (fr) * | 1997-05-01 | 1998-11-05 | Micron Communications, Inc. | Procede de formation de ci dans des substrats et circuits enfouis |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9761511B2 (en) | 2015-04-24 | 2017-09-12 | Stmicroelectronics S.R.L. | Electronic components with integral lead frame and wires |
US10529653B2 (en) | 2015-04-24 | 2020-01-07 | Stmicroelectronics S.R.L. | Electronic components with integral lead frame and wires |
Also Published As
Publication number | Publication date |
---|---|
FR2797076B1 (fr) | 2003-11-28 |
FR2797076A1 (fr) | 2001-02-02 |
AU6705800A (en) | 2001-02-19 |
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