Contactless data transmission device, security and/or valuable document including the same and method for manufacturing the contactless data transmission device

• US 9,111,194 B2
• Filed: 02/25/2013
• Issued: 08/18/2015
• Est. Priority Date: 03/01/2012
• Status: Active Grant

• Current Assignee: Bundesdruckerei GmbH (Government of Germany)
• Original Assignee: Bundesdruckerei GmbH (Government of Germany)
• Inventors: Fischer, Jrg, Muth, Oliver, Paeschke, Manfred, Tietke, Markus, Kloeser, Joachim, Holinski, Denis, Ferber, Alexander, Trlenberg, Stefan
• Primary Examiner(s): TRAIL, ALLYSON NEEL
• Application Number:
  US14/382,138
• Publication Number:
  US 20150028107A1
• Time in Patent Office: 904 Days
• Field of Search: 235/488, 235/492, 343/700.MS
• US Class Current: 1/1
• CPC Class Codes: B42D 25/305 Associated digital information record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: B42D 25/455 using heat
• CPC Class Codes: B42D 25/46 using pressure
• CPC Class Codes: G06K 19/07745 Mounting details of integrated circuit chips
• CPC Class Codes: G06K 19/07754 the connection being galvanic
• CPC Class Codes: G06K 19/07783 the coil being planar
• CPC Class Codes: H01L 2224/0401 Bonding areas specifically adapted for bump connectors, e.g. under bump metallisation [UBM]
• CPC Class Codes: H01L 2224/16225 the item being non-metallic, e.g. insulating substrate with or without metallisation
• CPC Class Codes: H01L 2224/16227 the bump connector connecting to a bond pad of the item
• CPC Class Codes: H01L 2224/81191 wherein the bump connectors are disposed only on the semiconductor or solid-state body
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 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
• CPC Class Codes: H01L 2924/07811 Extrinsic, i.e. with electrical conductive fillers
• CPC Class Codes: H01L 2924/12044 OLED
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/77 for interrogation
• CPC Class Codes: Y10T 29/49018 with other electrical component

Abstract

This present invention serves to simplify manufacture of a contactless data transmission device (50). This device (50) has an electrically insulating carrier (1), a circuit element arranged on the carrier (1) made from a continuous antenna conductor track (2) in the form of at least one spiral winding (4, 5, 6) and respectively one terminal contact (15, 16) at the ends thereof as well as an electronic component (3) with at least two contact points (11, 12) electrically connected with the circuit element. The electronic component (3) is placed in a mounting region (10) above the at least one spiral winding (4, 5, 6). The at least two contact points (11, 12) of the component (3) are electrically connected with a respective terminal contact (15, 16) of the antenna conductor track (2). At least one spiral winding (4, 5, 6) is branched outside the mounting region (10) between two respective branching points (7′, 7″; 8′, 8″; 9′, 9″) into at least two spiral winding branches (4′, 4″; 5′, 5″; 6′, 6″). The data transmission device (50) is a component part of a valuable and/or security document (100).

Claims

1. Contactless data transmission device (50) which comprises:

an electrically insulating carrier (1),

a circuit element arranged on the carrier (1), wherein the circuit element comprises a continuous antenna conductor track (2) in the form of at least one spiral winding (4, 5, 6) and respectively one terminal contact (15, 16) at the ends thereof, and

an electronic component (3) electrically connected with the circuit element with at least two contact points (11, 12), wherein the electronic component (3) is placed in a mounting region (10) above the at least one spiral winding (4, 5, 6) and wherein the at least two contact points (11, 12) of the electronic component (3) are electrically connected with a respective terminal contact (15, 16) of the antenna conductor track (2),

wherein at least one spiral winding (4, 5, 6) is branched outside the mounting region (10) between two respective branching points (7′

, 7″

;

8′

, 8″

;

9′

, 9″

) into at least two spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

),

characterized in that the circuit element furthermore comprises a capacitive circuit element and that the capacitive circuit element is formed by at least one blind conductor track (25, 26) which is respectively electrically connected with the terminal contact (15, 16) of the antenna conductor track (2).

2. The contactless data transmission device (50) according to claim 1, characterized in that the at least one spiral winding (4, 5, 6) runs through between at least two contact points (11, 12) of the electronic component (3).

3. The contactless data transmission device (50) according to claim 2, characterized in that the spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) of the antenna conductor track (2) are formed to run with a constant width (b).

4. The contactless data transmission device (50) according to claim 1, characterized in that the spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) of the antenna conductor track (2) are formed to run with a constant width (b).

5. The contactless data transmission device (50) according to claim 4, characterized in that the spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) of the antenna conductor track (2) and the areas of the spiral windings (4, 5, 6) running in the mounting region (10) are equally wide.

6. The contactless data transmission device (50) according to claim 5, characterized in that the electronic component (3) is formed by an unhoused semiconductor chip.

7. The contactless data transmission device (50) according to claim 6, characterized in that the semiconductor chip is mounted on the antenna conductor track (2) according to the flip-chip technique.

8. The contactless data transmission device (50) according to claim 7, characterized in that at least two of the at least two spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) of at least one spiral winding (4, 5, 6) are connected together between the branching points (7′

, 7″

;

8′

, 8″

;

9′

, 9″

) additionally by respectively at least one electrical connecting element (35′

, 35″

, 35′

″

, 35″

″

;

36′

, 36″

, 36′

″

, 36″

).

9. The contactless data transmission device (50) according to claim 8, characterized in that the antenna conductor track (2) is made from a conductive paste or a conductive varnish.

10. The contactless data transmission device (50) according to claim 9, characterized in that intermediate spaces between the spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) are filled with a dielectric substance having a dielectric constant which differs from that of the carrier (1).

11. The contactless data transmission device (50) according to claim 1, characterized in that the spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) of the antenna conductor track (2) and the areas of the spiral windings (4, 5, 6) running in the mounting region (10) are equally wide.

12. The contactless data transmission device (50) according to claim 1, characterized in that the electronic component (3) is formed by an unhoused semiconductor chip.

13. The contactless data transmission device (50) according to claim 12, characterized in that the semiconductor chip is mounted on the antenna conductor track (2) according to the flip-chip technique.

14. The contactless data transmission device (50) according to claim 12, characterized in that at least two of the at least two spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) of at least one spiral winding (4, 5, 6) are connected together between the branching points (7′

, 7″

;

8′

, 8″

;

9′

, 9″

) additionally by respectively at least one electrical connecting element (35′

, 35″

, 35′

, 35″

″

;

36′

, 36″

, 36′

″

, 36″

″

).

15. The contactless data transmission device (50) according to claim 1, characterized in that at least two of the at least two spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) of at least one spiral winding (4, 5, 6) are connected together between the branching points (7′

, 7″

;

8′

, 8″

;

9′

, 9″

) additionally by respectively at least one electrical connecting element (35′

, 35″

, 35′

″

, 35″

″

;

36′

, 36″

, 36′

″

, 36″

″

).

16. The contactless data transmission device (50) according to claim 1, characterized in that the antenna conductor track (2) is made from a conductive paste or a conductive varnish.

17. The contactless data transmission device (50) according to claim 16, characterized in that intermediate spaces between the spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) are filled with a dielectric substance having a dielectric constant which differs from that of the carrier (1).

18. The contactless data transmission device (50) according to claim 1, characterized in that intermediate spaces between the spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

) are filled with a dielectric substance having a dielectric constant which differs from that of the carrier (1).

19. A valuable and/or security document comprising at least two document layers connected together through lamination, wherein one of the layers is formed by a contactless data transmission device (50) which comprises:

an electrically insulating carrier (1),

a circuit element arranged on the carrier (1), wherein the circuit element comprises a continuous antenna conductor track (2) in the form of at least one spiral winding (4, 5, 6) and respectively one terminal contact (15, 16) at the ends thereof, and

an electronic component (3) electrically connected with the circuit element with at least two contact points (11, 12), wherein the electronic component (3) is placed in a mounting region (10) above the at least one spiral winding (4, 5, 6) and wherein the at least two contact points (11, 12) of the electronic component (3) are electrically connected with a respective terminal contact (15, 16) of the antenna conductor track (2),

wherein at least one spiral winding (4, 5, 6) is branched outside the mounting region (10) between two respective branching points (7′

, 7″

;

8′

, 8″

;

9′

, 9″

) into at least two spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

),

characterized in that the circuit element furthermore comprises a capacitive circuit element and that the capacitive circuit element is formed by at least one blind conductor track (25, 26) which is respectively electrically connected with the terminal contact (15, 16) of the antenna conductor track (2).

20. A method for the manufacture of the contactless data transmission device (50) which comprises:

an electrically insulating carrier (1),

a circuit element arranged on the carrier (1), wherein the circuit element comprises a continuous antenna conductor track (2) in the form of at least one spiral winding (4, 5, 6) and respectively one terminal contact (15, 16) at the ends thereof, and

an electronic component (3) electrically connected with the circuit element with at least two contact points (11, 12), wherein the electronic component (3) is placed in a mounting region (10) above the at least one spiral winding (4, 5, 6) and wherein the at least two contact points (11, 12) of the electronic component (3) are electrically connected with a respective terminal contact (15, 16) of the antenna conductor track (2),

wherein at least one spiral winding (4, 5, 6) is branched outside the mounting region (10) between two respective branching points (7′

, 7″

;

8′

, 8″

;

9′

, 9″

) into at least two spiral winding branches (4′

, 4″

;

5′

, 5″

;

6′

, 6″

),

characterized in that the circuit element furthermore comprises a capacitive circuit element and that the capacitive circuit element is formed by at least one blind conductor track (25, 26) which is respectively electrically connected with the terminal contact (15, 16) of the antenna conductor track (2);

said method comprising the following method steps;

i) providing a carrier (1),

ii) printing a spiral-shaped circuit element onto the carrier (1), wherein the circuit element comprises an antenna conductor track (2) including terminal contacts (15, 16) of the antenna conductor track (2) and a capacitive circuit element, wherein the capacitive circuit element is formed by at least one blind conductor track (25, 26) which is respectively electrically connected with a terminal contact (15, 16) of the antenna conductor track (2),

iii) placing an electronic component (3) above the antenna conductor track (2) so that contact points (11, 12) of the electronic component (3) lie opposite the terminal contacts (15, 16), and contacting the electronic component (3) with the antenna conductor track (2).