RFID tag

• US 20070132593A1
• Filed: 03/29/2006
• Published: 06/14/2007
• Est. Priority Date: 12/14/2005
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Yamazaki, Midori
• Application Number:
  US11/391,287
• Publication Number:
  US 20070132593A1
• Time in Patent Office: Days
• US Class Current: 340/572.800
• CPC Class Codes: G06K 19/07745 Mounting details of integrated circuit chips
• CPC Class Codes: H01L 23/293 Organic, e.g. plastic
• 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 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A Radio Frequency Identification (RFID) tag includes an integrated circuit (IC) chip and an antenna. The IC chip is enclosed inside a coating of endothermic material. The endothermic material includes silicon resin or ceramic resin or both.

Claims

1. A Radio Frequency Identification (RFID) tag comprising:

an integrated circuit (IC) chip configured to store therein information;

an antenna configured to perform wireless communication with outside; and

a coating of endothermic material configured to enclose the IC chip.

2. The RFID tag according to claim 1, wherein the endothermic material includes silicon resin.

3. The RFID tag according to claim 2, wherein the endothermic material includes silica gel.

4. The RFID tag according to claim 1, wherein the endothermic material includes ceramic resin.

5. The RFID tag according to claim 4, wherein the endothermic material includes silica gel.

6. The RFID tag according to claim 1, wherein the endothermic material includes a mixture of silicon resin and ceramic resin.

7. The RFID tag according to claim 6, wherein the endothermic material includes silica gel.

8. The RFID tag according to claim 1, wherein

the antenna includes a first part and a second part, and

the first part is thinner than the second part.

9. The RFID tag according to claim 1, further comprising

a low-pass filter that blocks an electromagnetic wave of a frequency band generated by magnetron.