The invention relates to a method for manufacturing a radiofrequency identification device (RFID) which comprises the following steps: producing an antenna (13), which consists of printing in a plurality of passes and on a substrate (11) a winding of turns (12), an insulating strip (14) of dielectric material on a portion of the turns, a first conductive ink contact (27) made up of a first connection pad (26), a first link (17) and an electric bridge (24) located on the insulating strip, a second conductive ink contact (29) made up of a second connection pad (28) and a second link (19), each of the contacts being connected to one of the two ends of the antenna; making a blind recess (22) on the first surface (15) of the mounting, including a bottom (42) and curved side walls (34), the location of the recess being selected such that once said recess is made, the connection pads are located on the bottom and the links are located simultaneously on the substrate, on the side walls and on the bottom of the recess; and connecting the chip to the connection pads.
G06K 19/02 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par l'utilisation de matériaux spécifiés, p. ex. pour éviter l'usure pendant le transport à travers la machine
G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
2.
RADIO FREQUENCY DEVICE PROVIDED WITH AN OPTIMIZED ANTENNA
The invention relates to a radio frequency device intended for contactless communication with an associated reader, made up of a planar support layer (11) and an electrical circuit, the electrical circuit comprising an antenna (12) formed by a planar winding of at least two turns (10) that intersect without short-circuiting owing to a dielectric layer (9) and a chip or an electronic module (14) connected to the antenna. According to the main feature of the invention, the relative electric permittivity of the dielectric layer (9) has a value above 20 and creates a crossover capacity Ce whereof the value increases the resultant capacity C of the electric circuit so as to decrease the inductance L of the antenna by decreasing its length by a whole number of turns, the electric circuit thus forming a resonant circuit allowing communication with the associated reader.
G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
3.
RADIO-FREQUENCY DEVICE MADE OF PLASTIC FOR A CONTACTLESS SMARTCARD OR CONTACTLESS SECURITY OR VALUABLE DOCUMENT AND A PROCESS FOR MANUFACTURING SAME PREVENTING CRACKING
The invention relates to a radio-frequency device comprising: an antenna (11) and an integrated-circuit module (29) comprising, on its first face, an upper contact land (25) and on its second face a chip (12) encapsulated in a resin and at least two lower contact lands (23 and 24), and three plastic layers (10, 20 and 30) laminated to one another, the first layer containing the antenna and the module connected to the antenna via the lower contact lands, the second layer containing a cavity (19) of the size of the upper contact land of the module, the second layer being placed on the first layer so as to cover the antenna, and the third layer entirely covering the second layer. According to the main feature of the invention, an additional layer (50) is placed between the first layer (10) and the second layer (20) on the upper contact land (25) of the module (29) so as to cover said land entirely.
A multilayer contactless smartcard 10 including an electronic chip embedded in the card, the chip being connected to an antenna 22 printed on a carrier layer 20, and two card bodies, one on each side of the carrier, each including at least one plastic layer 40 and 60. The antenna carrier is opaque and includes a first cut-out forming a void 23 filled with a transparent plastic; and the plastic layers of the two card bodies each include a second cut-out forming two identical voids 43 and 63 the outlines of which superimpose, in order to make a transparent zone appear in the thickness of the card, forming a transparent logo in the shape of the cut-out. A process for manufacturing such a card is also disclosed.
G06K 19/06 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par le genre de marque numérique, p. ex. forme, nature, code
G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
B42D 25/00 - Cartes ou structures de type feuille portant des informations caractérisées par leurs éléments d’identification ou de sécuritéLeur fabrication
5.
METHOD FOR PRODUCING A CONTACTLESS SMART CARD WITH A TRANSPARENT LOGO
The invention concerns a contactless smart card 10 having several layers comprising an electronic chip fitted or embedded in the card, the chip being connected to an antenna 22 printed on a support layer 20, two bodies of card on each side of said support each consisting of at least one layer of plastic material 40 and 60. According to the main features of the invention, the antenna support is opaque and comprises a first cutout forming a recess 23 filled with a transparent plastic material, and the layers of plastic material of the two bodies of card each comprise a second cutout forming two identical recesses 43 and 63 of which the edges overlap, in such a way as to reveal a transparent area in the thickness of the card forming a transparent logo in the shape of the cutout. The invention also concerns the method of producing such a card.
A contactless portable device including a support layer and a protective layer, the support layer having, on its first side, an antenna made up of a flat winding of turns and a protective layer glued to the first side of the support layer, the antenna having two cuts, two wires and four ends including two connection ends for connecting a chip, and two ends each connected to a contact separated from one another by a narrow space so as to render the antenna open, such that the antenna is closed by flow of a current between the two contacts through the protective layer when a user places a finger on the protective layer where the contacts are located, and enabling communication between the chip and a reader associated with the contactless portable device.
G06K 19/02 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par l'utilisation de matériaux spécifiés, p. ex. pour éviter l'usure pendant le transport à travers la machine
G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
G06K 19/073 - Dispositions particulières pour les circuits, p. ex. pour protéger le code d'identification dans la mémoire
The invention relates to a portable contactless device consisting of at least two layers, a support layer (311) comprising, on the first face thereof, an antenna (312) formed from a planar winding of turns (310) that intersect each other via an electrically insulating bridge (309), a protective layer adhered to the first face of the support layer; the antenna comprises two cuts and consists of two strands and four ends (321, 322, 323 and 324) including two connection ends (321, 322) for connecting a chip (314). According to the principal feature, the antenna comprises two ends (323, 324) each extended by a pad (333, 334), said pads not being in contact with each other and being separated by a thin space (525) such that the antenna is open, the antenna being closed by the flow of a current between the two pads via the protective layer when a user applies a finger to the protective layer in the region of the pads, thus allowing communication between the chip and a reader connected to the portable contactless device.
The invention relates to a hybrid contact/contactless smart card (1), including a card body consisting of a plurality of layers, from among which a so-called support layer (40) supports a printed antenna (41) consisting of at least one coil, and supports an integrated circuit module (10) connected to the antenna via two inner and outer connection contacts (43, 44) arranged in alignment with the inner and outer ends (45, 46) of the antenna coils, respectively, the module being located on the card in a portion delimited by a first side (6) of the card, a second side (8) of the card perpendicular to the first side, a first line (3) parallel to the first side (6) of the card, and a second line (4) parallel to the second side of the card. According to the main characteristic of the invention, the inner end (45) of the antenna coils, which is connected to the inner contact (43), is located entirely in said portion, such that when the card is bent and/or twisted, the connection between the module and the antenna is not broken.
The invention relates to a method for partially modulating the amplitude of a carrier wave, by between 8% and 14%, the carrier wave being transmitted by a wireless transceiver (10) intended to exchange data with a remote portable object wirelessly, the method consists in: a) delivering two digital radiofrequency signals Tx1 (20) and Tx2 (22); b) dephasing the second signal Tx2 by 180 degrees relative to the first signal Tx1 when there is no information to transmit (rest state); c) dephasing the two signals, Tx2 relative to Tx1 or Tx1 relative to Tx2 by an additional amount φ when there is information to be transmitted (modulated state); d) passing the digital signals through a filtering and matching stage (13); and e) adding the first and the second phase-modulated filtered signals (Tx1f and Tx2f) at the antenna in order to obtain a resulting transmitted signal with a modulated amplitude.
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
H04B 5/02 - Systèmes de transmission à induction directe, p.ex. du type à boucle inductive utilisant un émetteur-récepteur
H04B 5/00 - Systèmes de transmission en champ proche, p. ex. systèmes à transmission capacitive ou inductive
H04L 25/49 - Circuits d'émissionCircuits de réception à conversion de code au transmetteurCircuits d'émissionCircuits de réception à pré-distorsionCircuits d'émissionCircuits de réception à insertion d'intervalles morts pour obtenir un spectre de fréquence désiréCircuits d'émissionCircuits de réception à au moins trois niveaux d'amplitude
H04L 27/04 - Circuits de modulationCircuits émetteurs
H04L 27/20 - Circuits de modulationCircuits émetteurs
10.
Radio frequency identification device in polycarbonate and its manufacturing method
The invention concerns a method for manufacturing a radio frequency identification device (RFID), featuring a flat and flexible substrate made of polycarbonate equipped with an antenna (14) composed of conductive ink fully encased in the polycarbonate and a chip or integrated circuit module (29) connected to the antenna, the antenna formed by the winding of several turns features a turn overlap zone, an insulating strip of dielectric material separating the turns of the antenna in the overlap zone, the edges of the device being completely uniform so that no lines of demarcation between the various layers are visible, thereby preventing all attempt of delamination of the device over its thickness.
G06K 19/06 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par le genre de marque numérique, p. ex. forme, nature, code
11.
POLYCARBONATE RADIOFREQUENCY IDENTIFICATION DEVICE, AND METHOD FOR MANUFACTURING SAME
The invention relates to a method for manufacturing a radiofrequency identification device (RFID) including a planar and flexible substrate made of polycarbonate, which is provided with a conductive-ink antenna (14) completely embedded in the polycarbonate, and a chip or integrated circuit module (29) connected to the antenna. The antenna, which consists of a winding having a plurality of turns, includes an area in which turns intersect, wherein an insulating band made of a dielectric material separates the turns of the antenna at the intersecting area. The edges of the device are completely uniform, such that none of the lines of demarcation between the various layers are visible, thereby preventing any attempt to delaminate the device in the body thereof.
The invention relates to a method for manufacturing a substrate for a radiofrequency identification (RFID) device (52), including an antenna (42) and a two-sided integrated circuit module (10) that includes inner (13, 14) and outer contacts (12) connected to a chip (15) encapsulated in a module, the method including the following steps: printing the antenna (42) comprising bonding pads (43 and 44) on a substrate (40); making a cavity (41) between the bonding pads (43 and 44); gluing a film of glue (110) onto the inner side of the module, except on the inner contacts (13, 14); positioning the module on the substrate (40) on the antenna side and such that the inner contacts of the module are bearing against the bonding pads of the antenna and such that the encapsulation (18) of the chip is in the cavity; laminating the substrate layer (40) and the module together so as to connect the module to the antenna and to glue the module.
The invention relates to a contact-less portable object (11) including an electronic circuit (14) and an antenna (12) connected together and permitting a coupling between the electronic circuit and a reader associated with the contact-less portable object, the power supply of the object being provided without contact by the field emitted from the reader. According to the main characteristic of the invention, the contact-less portable object includes a set of field indicators (18) that provide the user with a measure of the value of a physical amount proportional to the quantity of magnetic field flowing through the antenna (12).
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
14.
Contactless portable object capable of providing an indication on the performance of a contactless reader
The invention concerns a contactless portable object (11) featuring an electronic circuit (14) and an antenna (12) connected together enabling coupling between the electronic circuit and a reader associated with the portable contactless object. According to the main characteristic of the invention, the contactless portable object includes a set of field indicators (18) that provide the user with a measurement of the value of a physical quantity proportional to the quantity of the electromagnetic field which passes through the antenna (12).
G06K 7/00 - Méthodes ou dispositions pour la lecture de supports d'enregistrement
G06K 19/06 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par le genre de marque numérique, p. ex. forme, nature, code
15.
REINFORCED SUBSTRATE FOR RADIOFREQUENCY IDENTIFICATION DEVICE AND METHOD FOR MAKING SAME
The invention relates to a method for making a radiofrequency identification device (RFID) including an antenna and a chip (12) connected to the antenna, and comprising the following steps: printing an antenna (12) including connection studs (17, 19) on a substrate (20) made of paper or synthetic paper; depositing an adhesive dielectric material between the antenna connection studs; positioning an integrated circuit module (10) on the substrate, the substrate including contact pads (17, 18) and the chip (12) connected to the contact pads in a module encapsulation (14) so that the module contact pads are located opposite the antenna connection studs; depositing on the substrate a thermoplastic layer (22) and a layer of paper or synthetic paper (24), the two layers (22, 24) comprising a cavity (21, 23) at the location of the encapsulation (14) of the module (10); laminating together the three layers, i.e. the antenna substrate layer (20), the thermoplastic layer (22) and the paper or synthetic-paper layer (24) in order to electrically connect said module to said antenna and to agglomerate the layers (20, 22, and 24) together.
The invention relates to a method for making the cover of an identity document provided with a radiofrequency identification device including an antenna and a chip (12) connected to the antenna, and including the following steps: making an antenna (12) including connection studs (13, 14) on a substrate (10); forming a cavity (20) between the connection studs (13, 14); depositing an adhesive dielectric material (25, 26) in the vicinity of the antenna connection studs; positioning an integrated circuit module (19) on the substrate so that the contact pads of the module are located opposite the connection studs of the antenna and so that the encapsulation of the module is carried out in the cavity (20); depositing, on the substrate surface including the antenna, at least one layer of a heat-adhesive film (40, 50, 60); depositing on the layer(s) (40 or 50 and 60) of heat-adhesive film a covering layer (70); and laminating the layer assembly.
B29C 65/54 - Application d'un adhésif entre des éléments pré-assemblés
B32B 37/02 - Procédés ou dispositifs pour la stratification, p. ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par la séquence des opérations de stratification, p. ex. par addition de nouvelles couches à des postes successifs de stratification
B32B 37/12 - Procédés ou dispositifs pour la stratification, p. ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par l'usage d'adhésifs
H01L 21/02 - Fabrication ou traitement des dispositifs à semi-conducteurs ou de leurs parties constitutives
B29C 65/02 - Assemblage d'éléments préformésAppareils à cet effet par chauffage, avec ou sans pressage
B32B 37/10 - Procédés ou dispositifs pour la stratification, p. ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par la technique de pressage, p. ex. faisant usage de l'action directe du vide ou d'un fluide sous pression
18.
METHOD FOR CONNECTING AN ELECTRONIC CHIP TO A RADIO FREQUENCY IDENTIFICATION DEVICE
The invention relates to a method for connecting an electronic chip (10) to bonding pads (47 and 48) belonging to an electric circuit and intended to receive the chip which is provided with two conducting plates (31 and 32) located on the last chip-forming layer and at least one electromagnetic shielding layer, at least one of said plates (31 or 32) being totally covered with an electrically insulating layer (34). The method includes the following steps: an adhesive dielectric material (40) is deposited on the circuit between the bonding pads (47, 48) such as to maintain the electronic chip (10) in a fixed position in relation to the circuit; and the electronic chip (10) is positioned on the circuit such that the conducting plates (31 and 32) are opposite the bonding pads (47 and 48) of the electric circuit, so as to create at least one capacitive connection between the chip and the electric circuit formed by the conducting plate (31 or 32), the electrically insulating layer covering all of the plate and the bonding pad (47 or 48).
The invention concerns a contactless portable object (10, 30, 60) featuring a main radiofrequency device made up of a main chip (18, 38, 68) and a main antenna (16, 36, 66) connected together so that, when the portable object enters the magnetic field of a suitable reader, the main radiofrequency device provides power to the chip and ensures communication between the chip and the reader. According to the main characteristic of the invention, the portable object includes a secondary contactless device featuring a secondary antenna (12, 32, 62) and an electric circuit set up in such a way that, when the two antennas enter the magnetic field of a suitable reader at the same time, the amount of energy required to power the electric circuit and have it operational being less than the amount of energy required to power the main chip (18, 38, 68) and have it operational, the electric circuit is powered and makes the reading of data of the main chip impossible.
G06K 19/06 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par le genre de marque numérique, p. ex. forme, nature, code
20.
SECURITY PERIPHERAL INTEGRATED WITH A CONTACTLESS OBJECT OF SECURE DOCUMENT TYPE WITH RADIOFREQUENCY DEVICE
The invention relates to a contactless portable object (10, 30, 60) comprising a main radiofrequency device composed of a main chip (18, 38, 68) and of a main antenna (16, 36, 66) that are connected together so that when the portable object enters the magnetic field of a suitable reader, the main radiofrequency device ensures the powering of the chip and the communication between the chip and the reader. According to the main characteristic of the invention, the portable object comprises a secondary contactless device comprising a secondary antenna (12, 32, 62) and an electrical circuit that are parameterized in such a way that, when the two antennas enter the magnetic field of a suitable reader at the same time, the quantity of energy required to power the electrical circuit so as to make it operate being less than the quantity of energy required to power the main chip (18, 38, 68) so as to make it operate, the electrical circuit is powered and makes it impossible to read the data of the main chip.
Radiofrequency identification device (RFID) comprising an antenna (10) connected to a chip intended to be affixed to an object to be identified by a remote reader transmitting to the identification device electromagnetic signals received by the antenna and containing the data allowing identification as well as the supply voltage (VDC) of the device, the antenna transmitting back to the reader signals provided by the chip by retromodulation by means of a switch (22) in the chip whose open or closed position defines the digital identification data transmitted by the device. The chip comprises a variable impedance (30) connected in series with the switch across the terminals of the antenna and a means (32) for detecting the supply voltage so as to adjust the value of the variable impedance in such a way that this supply voltage is always greater than a predetermined value (Vthreshold) below which the device can no longer transmit the digital identification data.
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
The invention relates to a set of tickets in the form of a continuous strip (35, 85) of multi-layered, detachable tickets, in which perpendicular precuts (32, 82) alternated with ticket-connecting bridges (33, 83) are provided between two adjacent tickets (30 and 31, 80 and 81), said transverse precuts serving as a guide for separating adjacent tickets when one of the tickets is pulled. The ends of the aforementioned transverse precuts (32, 82) are provided with longitudinal precuts (34, 84) which are perpendicular or oblique thereto, such that the connecting bridges (33, 83) between two adjacent tickets serve as hinges when the adjacent tickets are folded or do not occupy the same plane, thereby ensuring that the outer layer of the ticket is not subjected to more stress than the inner layer.
B42D 15/10 - Cartes d'identité, cartes de crédit, cartes bancaires ou cartes analogues portant des informations (supports d'enregistrement, p.ex. cartes d'identité ou cartes de crédit, pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques G06K 19/00)
The invention relates to a masking device (10, 100, 31, 80) intended to prevent remote data exchange between a reader and a contactless object (21, 121, 41, 81) having a radiofrequency device, the radiofrequency device comprising an antenna (22, 122, 42, 70) and a chip (24, 124, 44, 84) that are connected together. According to a main feature of the invention, the masking device comprises at least one array of conducting lines (20, 120, 30, 70, 13) produced on a flat support (11, 111, 32, 92), the device preventing the awakening of the chip (24, 124, 44, 84) and stopping its data being read when it is placed near the antenna (22, 122, 42, 82).
A radio frequency identification device support (2) featuring an antenna (12) screen-printed on a support (20) and a chip (10) connected to the connection terminals (17 and 19) of the antenna. According to a main characteristic of the invention, a thermoplastic layer (22) and a top layer of synthetic paper (24) are laminated on the antenna support (20) so that the antenna and the chip are trapped in the thermoplastic and the three layers (20, 22, and 24) cannot be separated and so that the device is resistant to water and humid environments.
G08B 13/14 - Déclenchement mécanique par l'enlèvement ou les essais de déplacement d'articles portatifs
H01L 21/00 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de dispositifs à semi-conducteurs ou de dispositifs à l'état solide, ou bien de leurs parties constitutives
H01L 21/31 - Traitement des corps semi-conducteurs en utilisant des procédés ou des appareils non couverts par les groupes pour former des couches isolantes en surface, p. ex. pour masquer ou en utilisant des techniques photolithographiquesPost-traitement de ces couchesEmploi de matériaux spécifiés pour ces couches
H01L 21/469 - Traitement de corps semi-conducteurs en utilisant des procédés ou des appareils non couverts par les groupes pour changer les caractéristiques physiques ou la forme de leur surface, p. ex. gravure, polissage, découpage pour y former des couches isolantes, p. ex. pour masquer ou en utilisant des techniques photolithographiquesPost-traitement de ces couches
25.
DEVICE WITH NO RADIOFREQUENCY CONTACT COMPRISING SEVERAL ANTENNAS AND ASSOCIATED ANTENNA SELECTION CIRCUIT
The invention relates to an integrated circuit for a device with no radiofrequency contact connected to a first antenna and to a second antenna designed to receive a radiofrequency signal from a reader. According to a main characteristic, the integrated circuit comprises a first rectifier circuit and a second rectifier circuit to rectify each radiofrequency signal received from the first antenna and the second antenna, respectively, so as to produce two positive output voltages Vl and V2, the rectifier circuits being mounted in parallel so as to select an output voltage value corresponding to the maximum voltage value between Vl and V2.
The invention concerns a radio frequency identification device medium (2) comprising a screen-printed antenna (12) on a carrier (20) and a chip (10) connected to the antenna connection terminals (17 and 19). According to one main characteristic of the invention, a thermoplastic layer (22) and an upper synthetic paper layer (24) are stratified on the antenna carrier (20) so that the antenna and the chip are buried in the thermoplastic and the three layers (20, 22 and 24) are indissociable so as to make the device waterproof and moisture-proof.
G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
G06K 19/02 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par l'utilisation de matériaux spécifiés, p. ex. pour éviter l'usure pendant le transport à travers la machine
27.
RADIO FREQUENCY IDENTIFICATION MEDIUM AND METHOD FOR MAKING SAME
The invention concerns a radio frequency identification device medium (2) comprising a screen-printed antenna (12) on a carrier (20) and a chip (10) connected to the antenna connection terminals (17 and 19). According to one main characteristic of the invention, a thermoplastic layer (22) and an upper synthetic paper layer (24) are stratified on the antenna carrier (20) so that the antenna and the chip are buried in the thermoplastic and the three layers (20, 22 and 24) are indissociable so as to make the device waterproof and moisture-proof.
G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
G06K 19/02 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par l'utilisation de matériaux spécifiés, p. ex. pour éviter l'usure pendant le transport à travers la machine
28.
Radio frequency identification device support and its manufacturing method
A radio frequency identification device support (2) featuring an antenna (12) screen-printed on a support (20) and a chip (10) connected to the connection terminals (17 and 19) of the antenna. According to a main characteristic of the invention, a thermoplastic layer (22) and a top layer of synthetic paper (24) are laminated on the antenna support (20) so that the antenna and the chip are trapped in the thermoplastic and the three layers (20, 22, and 24) cannot be separated and so that the device is resistant to water and humid environments.
G08B 13/14 - Déclenchement mécanique par l'enlèvement ou les essais de déplacement d'articles portatifs
H01L 21/00 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de dispositifs à semi-conducteurs ou de dispositifs à l'état solide, ou bien de leurs parties constitutives
H01L 21/31 - Traitement des corps semi-conducteurs en utilisant des procédés ou des appareils non couverts par les groupes pour former des couches isolantes en surface, p. ex. pour masquer ou en utilisant des techniques photolithographiquesPost-traitement de ces couchesEmploi de matériaux spécifiés pour ces couches
H01L 21/469 - Traitement de corps semi-conducteurs en utilisant des procédés ou des appareils non couverts par les groupes pour changer les caractéristiques physiques ou la forme de leur surface, p. ex. gravure, polissage, découpage pour y former des couches isolantes, p. ex. pour masquer ou en utilisant des techniques photolithographiquesPost-traitement de ces couches
29.
Radio frequency identification device resistant to humid environments and its manufacturing method
The invention concerns a radio frequency identification device (RFID) featuring an antenna (12) screen-printed on a fibrous support and a chip (10) connected to the connection terminals (17 and 19) of the antenna. According to the main characteristic of the invention, a thermoplastic layer (22) and a layer of paper (24) are laminated on the antenna support (20) so that the antenna and the chip are trapped in the thermoplastic and so that the device is resistant to water and humid environments.
brevets
