Paper tag identified by using radiofrequency and method of manufacturing the same

• US 7,413,130 B2
• Filed: 02/22/2007
• Issued: 08/19/2008
• Est. Priority Date: 02/05/2004
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kanda, Naoya, Inoue, Kosuke, Honma, Hiroshi
• Primary Examiner(s): LE, THIEN MINH
• Application Number:
  US11/709,157
• Publication Number:
  US 20070194135A1
• Time in Patent Office: 544 Days
• Field of Search: 235/492, 235/441, 235/375, 235/493, 235/486, 235/487, 235/488
• US Class Current: 235/492
• CPC Class Codes: G06K 19/07728 the record carrier comprising means for protection against impact or bending, e.g. protective shells or stress-absorbing layers around the integrated circuit
• 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 2224/81395 having an external coating, e.g. protective bond-through coating
• CPC Class Codes: H01L 2924/01057 Lanthanum [La]
• CPC Class Codes: H01L 2924/01079 Gold [Au]

Abstract

A RFID tag including: a paper-like structure inlaying a RFID thread between a first paper layer and a second paper layer, the RFID thread being connected to a RFID chip through bumps to an antenna arranged onto a base member and being formed with a protecting material provided with a window at a position in which the RFID chip corresponds; wherein a height of an upper surface of the protecting material is larger than a height of an upper surface of the RFID chip.

Claims

1. A RFID tag comprising:

a paper-like structure inlaying a RFID thread between a first paper layer and a second paper layer, the RFID thread being connected to a RFID chip through bumps to an antenna arranged onto a base member and being formed with a protecting material provided with a window at a position in which the RFID chip corresponds;

wherein a height of an upper surface of the protecting material is larger than a height of an upper surface of the RFID chip.

2. The RFID tag according to claim 1, wherein a rigidity of the protecting material is larger than a rigidity of the first paper layer or the second paper layer.

3. The RFID tag according to claim 1, wherein in the window, the upper surface of the RFID chip is arranged within at least one of the first paper layer and the second paper layer.

4. The RFID tag according to claim 2, wherein the protecting material is a polyester material or a polyimide material.

5. The RFID tag according to claim 1, wherein the base member is a film or a tape having a width of 3 mm or less.

6. A RFID tag comprises:

a paper-like structure inlaying a RFID thread between a first paper layer and a second paper layer, the RFID thread being connected to a RFID chip through bumps to an antenna arranged onto a base member and being formed with a protecting material provided with a window at a position in which the RFID chip corresponds, so as to cover the antenna;

wherein a height of an upper surface of the protecting material is larger than a height of an upper surface of the RFID chip.

7. The RFID tag according to claim 6, wherein the protecting material is a polyester material or a polyimide material.