WO2007054264A1 - Substrat plat pour afficher des informations et procede de fabrication du substrat - Google Patents

Substrat plat pour afficher des informations et procede de fabrication du substrat Download PDF

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Publication number
WO2007054264A1
WO2007054264A1 PCT/EP2006/010650 EP2006010650W WO2007054264A1 WO 2007054264 A1 WO2007054264 A1 WO 2007054264A1 EP 2006010650 W EP2006010650 W EP 2006010650W WO 2007054264 A1 WO2007054264 A1 WO 2007054264A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate according
dielectric layer
electrically conductive
conductive material
areal
Prior art date
Application number
PCT/EP2006/010650
Other languages
German (de)
English (en)
Inventor
Joergen Brosow
Original Assignee
Joergen Brosow
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102005053251A external-priority patent/DE102005053251A1/de
Priority claimed from DE200610009999 external-priority patent/DE102006009999A1/de
Application filed by Joergen Brosow filed Critical Joergen Brosow
Publication of WO2007054264A1 publication Critical patent/WO2007054264A1/fr

Links

Classifications

    • 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
    • G06K19/06187—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 with magnetically detectable marking
    • G06K19/06196—Constructional details

Definitions

  • the invention relates to a sheet-like substrate on which information is recorded, and to a method for its production.
  • Such areal substrates with binarized information are well known in numerous everyday life applications.
  • the number of recorded binary values, d. H. the amount of information coded by them is comparatively small.
  • Well-known examples are smart cards, cash cards, credit cards, key cards or the like.
  • the recorded information is, in particular, data identifying the cardholder and data representing a security feature, such as a PIN code. Since this is a mass-produced article, these substrates and the recordings to be made on these substrates must be cheap and easy to produce and also easy and safe to read. On the other hand, these records should be as secure as possible against counterfeiting, especially difficult to copy.
  • biometric features especially fingerprints.
  • fingerprints represent a particularly reliable means for person identification.
  • capacitive fingerprint readers are well known. These measure with the help of a very large number of tiny sensor electrodes, the local capacitance changes, which cause the finger lines of a finger applied to the sensor field. These capacitance changes are based on the fact that the local capacitance at a finger line resting on the sensor field is greater than the local capacitance at a groove between finger lines because the sensor element striking the groove faces air whose dielectric constant is substantially smaller than that of the resting finger line , In this way, the fingerprint readers create a digitized black-and-white image of the fingerprint in less than 100 ms. Suitable image processing software enables person identification by comparison between the stored black and white image and the fingerprint taken by a person to be identified.
  • the invention has for its object to provide a sheet-like substrate of the type mentioned on which information can be largely forgery-proof and permanently hold in a simple manner, and to provide a method for producing this planar substrate.
  • the substrate has a dielectric layer, on one surface of which an information representing, electrically conductive material is arranged.
  • the substrate has a dielectric layer, on one surface of which is the image of a biometric feature in the form of a pattern corresponding to it of regions of an electrically conductive material and on the other surface thereof in opposition to the pattern Cover made of an electrically conductive material is arranged.
  • the pattern may be both a positive image and a negative image of the biometric feature.
  • the feature is a fingerprint
  • the areas of electrically conductive material correspond to the finger lines. In between are the finger grooves as material-free areas.
  • the areas of electrically conductive material form the finger grooves, whereas the intermediate material-free areas correspond to the finger lines.
  • this pattern can be capacitively read by known capacitive reading techniques, in particular the known fingerprint reading technique, by detecting the local capacitance changes caused by the regions of electrically conductive material and the material-free interstices. By the known image processing techniques, the thus read out fingerprint is compared with the fingerprint of the person to be identified.
  • the planar substrate may for example form a page of a passport. This page is inserted in the passport control in a suitably trained fingerprint reader. For comparison, the person to be identified places the respective finger on a fingerprint reader of known type, and the image processing software determines whether there is an identification confirming correspondence with the image read from the passport.
  • the substrate forms a layer of a credit or debit card and is capacitively read by a suitable reader.
  • the image of the biometric feature, in particular of the fingerprint, as a pattern of electrically conductive material is very durable and practically indestructible, as long as the substrate as a whole is not destroyed.
  • the thickness of the dielectric layer can be very small, in particular smaller than 100 ⁇ m and preferably in the range of 5 to 20 ⁇ m.
  • the distance between the biometric pattern imaging pattern on one surface of the layer and the coating on the opposite surface of the layer is so small that the pattern does not oppose the background formed by the coating by radiation in the visible or shorter wavelength range, such as X-rays recognized and therefore can not be copied in this way.
  • Another preferred embodiment in which binary values representing zero or one at predetermined relative positions are recorded, is characterized in that the substrate has a dielectric layer on one surface of which one of the two binary values is due to the presence of an electrically conductive material in the relative position and the other of the two binary values is represented by the absence of the electrically conductive material in the respective relative position.
  • the change between the presence and absence of the electrically conductive material at the surface of the dielectric layer causes corresponding local capacitance changes that form a capacitive bit pattern.
  • This capacitive bit pattern can be read, for example, by the well-known fingerprint readers, which measure the local capacitance changes with the aid of a very large number of tiny sensor electrodes.
  • the recording in the form of the capacitive bit pattern is highly forgery-proof because counterfeiters do not have the possibility of applying the electrically conductive material in the structure corresponding to the capacitive bit pattern.
  • information recording in the form of the capacitive pattern is very durable and virtually indestructible unless the substrate as a whole is destroyed.
  • the thickness of the dielectric layer can be very small, in particular smaller than 100 ⁇ m and preferably in the range of 5 to 20 ⁇ m.
  • An expedient embodiment according to a first alternative is that the electrically conductive material is formed on the surface of the dielectric layer in the form of islands, which are arranged at the respective relative positions of the one of the two binaries, or according to a second alternative in that the electrically conductive material is formed on the surface of the dielectric layer in the form of a layer interrupted by holes arranged at the respective relative positions of the one of the two binary values.
  • the islands or the holes can be designed in any shape, in particular circular or square.
  • a particularly expedient embodiment is characterized in that the relative positions of the recorded binary values are arranged according to a matrix with n rows and m columns. As a result, the position of each individual binary value within the overall information is uniquely determined by the number of the row and the number of the column to which the relevant binary value belongs.
  • a covering of an electrically conductive material is arranged on the other surface of the dielectric layer opposite the recorded binary values. Because of the small thickness of the dielectric layer, the distance between the electrically conductive material used to record the binary values and the layer on the other side of the dielectric layer is so small that the capacitive pattern against the background formed by the scale is reduced by visible or shorter wavelength radiation Area, such as X-rays, not recognized and therefore can not be copied in this way.
  • the electrically conductive material of the pad is the same as that of the pattern.
  • the electrically conductive material is in particular a metal, preferably gold.
  • the dielectric layer is preferably a polymer film, copolymer film or a laminate of polymer films or copolymer films.
  • the film material is polypropylene, polyethylene or polycarbonate.
  • a practically particularly important embodiment of the substrate according to the invention is that the dielectric layer is connected on its side facing the image or its side having the recorded binary values to a first dielectric cover layer. Likewise, it is practically significant that the dielectric layer is bonded to a second dielectric overcoat on its facing side. Each of these cover layers protects the underlying electrically conductive material from mechanical damage, so that the material thickness of the electrically conductive material can be very thin.
  • At least one of the cover layers is optically opaque.
  • the underlying dielectric layer and the conductive material arranged thereon, in particular the pattern which images the fingerprint, can not be seen from the outside.
  • the opaque cover layer can advantageously be used for the optically readable recording of alphanumeric data, for example, the usual passport data, such as owner name, venue, issuing authority and the like. Play in plain text.
  • one of the cover layers is provided with an optically readable information. This may be, for example, a photograph of the owner or alphanumeric data.
  • one of the cover layers with a preferably contactless readable electronic circuit for storing data.
  • Circuitry which is embedded for example in the cover layer and in the manner of a
  • Transponders operated, for example, an electronic photograph of the person can be stored.
  • an alphanumeric data corresponding pattern of an electrically conductive material is arranged on the dielectric layer.
  • These alphanumeric data can then be read out digitally as well as the image of the biometric feature, in particular of the fingerprint.
  • this data may be the serial number of the chip forming the electrical circuit embedded in one of the cover layers.
  • the passport number or data of the passport holder can be recorded.
  • these alphanumeric data are read out together with the biometric feature, in particular fingerprint, and compared with the serial number read from the chip and / or the optically readable alphanumeric data.
  • the object is achieved by providing a dielectric layer on one of its two surfaces with a coating of an electrically conductive material and removed from the coating, the material according to a pattern corresponding to the information.
  • the procedure according to the invention that one provides a dielectric layer on both surfaces, each with a covering of an electrically conductive material and from one of the coverings the material according to removed a pattern corresponding to the image.
  • the procedure according to the invention is such that a dielectric layer is provided on one of its two surfaces with a coating of an electrically conductive material and removed the material from the pad according to a pattern corresponding to the binary values.
  • the recorded information includes a fingerprint
  • Fig. 2 shows a second embodiment in which the recorded information includes binary values.
  • planar substrate in an exploded view, in which a planar dielectric layer 1, a lying on its upper surface in the drawing first dielectric cover layer 2 and a lying on its lower surface in the drawing surface second dielectric cover layer 3 are shown exploded.
  • these three layers 1, 2 and 3 are congruent to each other and are inseparably connected to each other, for example, by gluing, welding or sewing, wherein the welding or sewing is done by laser action.
  • the upper surface of the dielectric layer 1 in FIG. 1 carries the image 4 of a fingerprint.
  • This consists of regions of an electrically conductive material adhering to this surface, in particular gold, which reproduce the course of the finger lines, wherein the material-free regions delimited between these regions correspond to the course of the grooves between the finger lines of the fingerprint.
  • the dielectric layer 1 was coated on both sides, for example by vapor deposition or spraying, with a very thin gold layer.
  • a fingerprint reader an image of the fingerprint was detected by a person and the gold layer was removed by laser etching or photolithographic methods in such a way that the remaining areas of gold reproduce the finger lines. The image was enlarged compared to the original fingerprint of the person. Outside the image 4, the material was removed except for a sample of alphanumeric data 5, 5 '.
  • Gold layer was left unchanged as a homogeneous coating 6.
  • the first dielectric cover layer 2 which is opaque as well as the second dielectric cover layer 3, is provided with a photographic image 7 of the person on its upper side facing away from the dielectric layer 1.
  • a transponder chip 8 is embedded in the first dielectric cover layer 2.
  • the photographic image 7 is stored in electronic form.
  • personal identification data such as the name of the person, the issuing authority and the like, are stored, which are also recorded in optically readable plain text 9 on the side of the first dielectric cover layer 2 facing away from the dielectric layer 1.
  • the pattern of alphanumeric data 5 on the dielectric layer 1 represents the serial number of the transponder chip 8, the pattern of alphanumeric data 5 1 a part of the personal identification data 9.
  • a thin transparent protective layer 10 or 10 ' is arranged on the free surfaces of the first and second dielectric cover layers 2, 3, on the free surfaces of the first and second dielectric cover layers 2, 3, on the free surfaces of the first and second dielectric cover layers 2, 3, on the free surfaces of the first and second dielectric cover layers 2, 3, a thin transparent protective layer 10 or 10 'is arranged.
  • FIG. 2 shows a first dielectric cover layer 10 facing the viewer and below it a second dielectric cover layer 20 congruently connected to the first dielectric cover layer 10.
  • the first dielectric cover layer 10 is merely one piece for the purpose of describing the second dielectric cover layer 20 far off.
  • the two dielectric cover layers 10 and 20 are congruent to each other and are inseparably connected to each other by gluing, welding or sewing, wherein the welding or sewing is done by laser action.
  • Recording medium 30 included. It consists of a thin strip-shaped dielectric layer 40, on whose surface facing the viewer islands 50 are arranged made of an electrically conductive material. The positions of these islands 50 are arranged according to a matrix with n rows and m columns. In this case, the relative positions occupied by an island 50 each represent one of the two binary values 0 or 1, while the relative positions not occupied by an island in each case represent the other binary value.
  • a layer of electrically conductive material could alternatively be provided on the dielectric layer 40, which has holes at corresponding relative positions, which correspond to one of the two binary values 0 or 1, whereas the conductive material present at the other relative positions corresponds to the one corresponds to each other binary value.
  • the dielectric layer 10 was coated on both sides with a very thin gold layer, for example by vapor deposition or spraying.
  • the gold layer facing the viewer in the drawing was removed by laser etching or photolithographic methods in such a way that the remaining areas of gold form the islands 50 or in the gold layer the holes corresponding to the binary values are formed.
  • the gold layer applied to the bottom surface of the dielectric layer 40 in the drawing was left as a homogeneous coating.
  • the upper surface of the first dielectric cover layer 10 in FIG. 2 carries the image 60 of a fingerprint.
  • This consists of areas of an electrically conductive material adhering to this surface, in particular gold, which influence the course of the fingers. Jinien reproduce, wherein the material-free areas limited between these areas correspond to the course of the grooves between the finger lines of the fingerprint.
  • This image like the islands 50, was made by vapor deposition or sputtering of a thin layer of gold.
  • a fingerprint reader an image of the fingerprint was detected by a person and the gold layer was removed by laser etching or photolithographic methods in such a way that the remaining areas of gold reproduce the finger lines.
  • the image 60 was enlarged compared to the original fingerprint of the person. In the same manner, outside of the image 60, the material was removed except for a pattern of alphanumeric data 70.
  • the binary values recorded on the strip-shaped recording medium 30 could represent a coded representation of the information content of the alphanumeric data of the pattern 70.
  • counterfeits of the optically readable pattern 70 of alphanumeric data could be recognized by reading the information content of the stripe-shaped recording medium 30 by means of a capacitive laser.
  • an electronic switch chip is integrated, which is protected by an access code, wherein the binary values recorded on the recording medium 30 contain the access code.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

L'invention concerne un substrat plat sur lequel des informations sont affichées et qui présente une couche diélectrique sur une surface de laquelle est disposé un matériau électriquement conducteur qui présente les informations.
PCT/EP2006/010650 2005-11-08 2006-11-07 Substrat plat pour afficher des informations et procede de fabrication du substrat WO2007054264A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102005053251A DE102005053251A1 (de) 2005-11-08 2005-11-08 Flächenhaftes Substrat für ein biometrisches Merkmal und Verfahren zur Herstellung des Substrats
DE102005053251.9 2005-11-08
DE200610009999 DE102006009999A1 (de) 2006-03-03 2006-03-03 Flächenhaftes Substrat zur Aufzeichnung von Binärwerten und Verfahren zur Herstellung des Substrats
DE102006009999.0 2006-03-03

Publications (1)

Publication Number Publication Date
WO2007054264A1 true WO2007054264A1 (fr) 2007-05-18

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ID=37564129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/010650 WO2007054264A1 (fr) 2005-11-08 2006-11-07 Substrat plat pour afficher des informations et procede de fabrication du substrat

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438194B2 (en) * 2009-03-27 2013-05-07 Canon Kabushiki Kaisha Information processing apparatus, control method for information processing apparatus, and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634847A (en) * 1984-02-25 1987-01-06 Machate Juergen Capacitive data carrier reader
DE4224371A1 (de) * 1992-07-23 1994-01-27 Thomson Brandt Gmbh Strich- oder Barcode-Einheit
US20040207194A1 (en) * 2001-06-28 2004-10-21 Manfred Heim Security element
US20050046573A1 (en) * 2001-04-30 2005-03-03 Velasco Francisco Martinez De Selective metal removal process for metallized retro-reflective and holographic films and radio frequency devices made therewith

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634847A (en) * 1984-02-25 1987-01-06 Machate Juergen Capacitive data carrier reader
DE4224371A1 (de) * 1992-07-23 1994-01-27 Thomson Brandt Gmbh Strich- oder Barcode-Einheit
US20050046573A1 (en) * 2001-04-30 2005-03-03 Velasco Francisco Martinez De Selective metal removal process for metallized retro-reflective and holographic films and radio frequency devices made therewith
US20040207194A1 (en) * 2001-06-28 2004-10-21 Manfred Heim Security element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438194B2 (en) * 2009-03-27 2013-05-07 Canon Kabushiki Kaisha Information processing apparatus, control method for information processing apparatus, and storage medium

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