Laminate RFID label and method of manufacture

• US 6,429,831 B2
• Filed: 07/11/2001
• Issued: 08/06/2002
• Est. Priority Date: 01/13/1999
• Status: Expired due to Fees

• Current Assignee: Brady Worldwide Incorporated (Brady Corporation)
• Original Assignee: Brady Worldwide Incorporated (Brady Corporation)
• Inventors: Babb, Susan M.
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): VANNUCCI, JAMES
• Application Number:
  US09/903,197
• Publication Number:
  US 20010043162A1
• Time in Patent Office: 391 Days
• Field of Search: 343/895, 343/700.MS, 343/873, 343/872, 296/00, 340/570, 340/572, 428/189, 428/897
• US Class Current: 343/895
• CPC Class Codes: B60C 23/0493 for attachment on the tyre
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/0775 arrangements for connecting the integrated circuit to the antenna
• CPC Class Codes: H01L 2224/16 of an individual bump connector
• 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 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 2924/07811 Extrinsic, i.e. with electrical conductive fillers
• CPC Class Codes: H01L 2924/3025 Electromagnetic shielding
• CPC Class Codes: H01Q 1/2241 used in or for vehicle tyres
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1405 Capsule or particulate matter containing [e.g., sphere, flake, microballoon, etc.]
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/1481 Dissimilar adhesives
• CPC Class Codes: Y10T 428/1486 Ornamental, decorative, pattern, or indicia
• CPC Class Codes: Y10T 428/23 Sheet including cover or casing
• CPC Class Codes: Y10T 428/24273 including aperture
• CPC Class Codes: Y10T 428/24322 Composite web or sheet
• CPC Class Codes: Y10T 428/24331 including nonapertured component
• CPC Class Codes: Y10T 428/24752 Laterally noncoextensive components

Abstract

A laminated label has a first conductive material defining electrical attachment pads; a dielectric material surrounding the attachment pads; a second conductive material deposited on the dielectric material and forming an antenna electrically connected to the attachment pads. A layer of expandable material forms a protective cavity surrounding the attachment pads. An IC chip is received in the protective cavity and connected to the antenna.

Claims

1. A method of making a laminated article for use as an RFID label comprising the steps of:

printing a first electrically conductive material to form two attachment pads;

printing a dielectric material in a layer surrounding said attachment pads;

printing a second electrically conductive material onto said dielectric material, said second electrically conducting material being shaped to define an antenna;

printing a protective material containing heat expandable spheres in a layer surrounding said attachment pads; and

expanding said expandable spheres to form a protective cavity containing said attachment pads.