EP0595549A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Radio frequency baggage tags
Assignee: HUGHES MICROELECTRONICS EUROPA Ltd
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Filing: 1993-10-21
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Granted: —
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Expires: 2013-10-21
Abstract
Abstract A radio frequency identification transponder tag (20) is built on a thin flexible substrate (30) and attached to an airline baggage identification label (10). The RF transponder tag (20) is electrically programmable, physically flexible and self-adhesive and is compatible with existing labelling systems to allow extra features to be added to such systems. The tag is interrogated by a remote interrogation device and includes a plurality of antenna turns (32) formed on a flexible substrate (30) and a transponder circuit chip (54) having double metal layer contact pads (58,60,70,72) at an intermediate portion thereof bonded to antenna pads (34,36) within the innermost turn (38) of the antenna by means of electrically conductive adhesive (80) that is contained and confined between areas of structural adhesive (86) that also interconnect the transponder chip (54) with the substrate (30).
Inventors
- 👤 Laurence David Bradley
- 👤 Edwin Deagle
- 👤 Stephen Glover
- 👤 Susan Harris
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:48
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/077; G06K19/07749; G06K19/07758; G06K19/0775; G06K19/07773; G06K19/07777; G06K19/07779; G06K19/07781; H; H10; H10W; H10W44/00; H10W44/501; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
39 words
A remotely readable identification tag comprising: a flexible substrate , an antenna formed on said substrate, a transponder circuit chip , means for mounting said chip on said substrate, and means for electrically connecting said chip to said antenna.
Claim 2
Dependent Claim
68 words
The apparatus of Claim 1 wherein said antenna comprises a conductive coil formed on said substrate and having first and second electrical contact antenna pads , said circuit chip including first and second electrical contact chip pads on an inner surface portion of the chip, said means for electrically connecting said chip to said antenna comprising electrically conductive adhesive interposed between said antenna pads and said chip pads.
Claim 3
Dependent Claim
25 words
The apparatus of Claim 2 wherein said antenna pads are formed on said substrate within an area thereof that is circumscribed by said antenna coil.
Claim 4
Dependent Claim
66 words
The apparatus of Claim 3 wherein said coil is comprised of a plurality of turns including an inner turn and an outer turn, said inner turn being connected to one of said antenna pads within an area circumscribed by said inner turn, and said outer turn having an end connected to a second one of said antenna pads within said area circumscribed by said inner turn.
Claim 5
Dependent Claim
32 words
The apparatus of Claim 4 including a bridging conductor extending across a plurality of said antenna turns and electrically connecting said outer turn to said second antenna pad within said inner turn.
Claim 6
Dependent Claim
55 words
The apparatus of Claim 5 wherein said flexible substrate has first and second surfaces, said antenna turns being mounted on said first surface and said bridging conductor being mounted on said second surface, and means for connecting ends of said bridging conductor through said substrate to said outer turn and to said second antenna pad.
Claim 7
Dependent Claim
36 words
The apparatus of Claim 2 wherein each said antenna pad includes an outer conductive area and an inner open area , and including conductive adhesive secured to said antenna pad and substrate within said open area.
Claim 8
Dependent Claim
21 words
The apparatus of Claim 2 including a layer of protective material extending over and secured to said chip and said antenna.
Claim 9
Dependent Claim
56 words
The apparatus of Claim 2 wherein said chip has electrical circuitry thereon and includes first and second chip primary contact pads electrically connected to said circuitry, a layer of dielectric material on said chip, and first and second chip secondary contact pads on said dielectric and electrically connected to said first and second primary pads respectively.
Claim 10
Dependent Claim
26 words
The apparatus of Claim 9 wherein said secondary pads are larger than said primary pads and overly both said primary pads and portions of said circuitry.
Claim 11
Dependent Claim
62 words
The apparatus of Claim 2 wherein said means for mounting said chip to said substrate includes a nonconductive structural adhesive bonded to said chip between said chip pads and bonded to said substrate between said antenna pads , said structural adhesive being positioned between and electrically insulating a first portion of said conductive adhesive from a second portion of said conductive adhesive.
Claim 12
Independent Claim
80 words
A method for forming a remotely readable identification tag comprising: forming a plurality of electrically conductive antenna turns on a flexible substrate , forming first and second antenna contact pads on said turns, providing a transponder circuit chip having first and second chip contact pads , bonding said first and second chip pads to said first and second antenna pads respectively, thereby bonding said chip to said antenna and substrate, and forming a protective covering over said chip and antenna.
Claim 13
Dependent Claim
40 words
The method of Claim 12 wherein said step of bonding said chip pads to said antenna pads comprises the step of interposing first and second electrically conductive adhesive portions between said chip pads and respective ones of said antenna pads.
Claim 14
Dependent Claim
35 words
The method of Claim 13 including the step of further bonding said chip to said substrate by positioning an electrically nonconductive structural adhesive between said conductive adhesive portions and between said chip and said substrate.
Claim 15
Dependent Claim
51 words
The method of Claim 12 wherein said step of forming said antenna turns includes the step of forming an inner turn and an outer turn forming said antenna contact pads within said inner turn and electrically connecting said outer turn to one of the antenna contact pads within the inner turn.
Claim 16
Dependent Claim
43 words
The method of Claim 12 wherein said step of forming antenna contact pads includes the step of forming a continuous peripheral conductor that circumscribes an open area thereof, and wherein said step of bonding comprises confining a conductive adhesive within said open area.
Claim 17
Dependent Claim
150 words
A luggage identification tag comprising: a flexible self-adhesive luggage identification strip configured and arranged to be secured around a luggage handle, and a remotely readable RF identification tag on said strip, said RF identification tag comprising: a flexible substrate having a first side thereof adhesively secured to said luggage identification strip, an antenna formed on said substrate having inner and outer turns, first and second antenna contact pads respectively connected with said inner and outer turns and positioned within an area circumscribed by said inner turn, a transponder circuit chip having first and second chip contact pads in electrical contact with respective ones of said antenna pads, electrically conductive adhesive encompassing said chip and antenna pads and bonded thereto, structural adhesive bonded to and between said chip and substrate and positioned between said chip pad and between said antenna pads, and a protective material covering said chip antenna and substrate.
Claim 18
Dependent Claim
15 words
The tag of Claim 17 including an optical bar code on said luggage identification strip.
Claim 19
Dependent Claim
59 words
The tag of Claim 17 wherein said chip includes circuitry on a surface thereof, said chip pads comprising relatively smaller primary pads positioned within an area encompassed by said circuitry, a layer of dielectric material on said chip covering said circuitry, and first and second relatively larger secondary pads on said dielectric and electrically connected to said primary pads.
Claim 20
Dependent Claim
123 words
A continuous multi-label strip of identification labels comprising: a continuous strip of flexible label material separated into a plurality of mutually adjacent sections, each said section comprising an independent luggage identification label, each said label comprising: a flexible identification label strip base, a flexible substrate secured to said base, a plurality of antenna turns formed on said substrate, and a transponder circuit chip secured to said substrate adjacent said antenna turns, the transponder chips of successive ones of said identification label sections being asymmetrically displaced in different directions from one identification label section to the next to facilitate folding and stacking of said label sections upon one another with transponder chips of mutually adjacent ones of said sections being in mutually staggered relation.
References Cited (Backward Citations)
No citation records indexed.
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