| US 7,540,428 B2 | ||
| RFID tag, RFID-tag antenna, RFID-tag antenna sheet, and method of manufacturing RFID tag | ||
| Shunji Baba, Kawasaki (Japan); Naoki Ishikawa, Kawasaki (Japan); Hiroshi Kobayashi, Kawasaki (Japan); Takatoyo Yamakami, Kawasaki (Japan); and Masumi Katayama, Kawasaki (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Nov. 29, 2004, as Appl. No. 10/998,138. | ||
| Claims priority of application No. 2004-253458 (JP), filed on Aug. 31, 2004. | ||
| Prior Publication US 2006/0043199 A1, Mar. 02, 2006 | ||
| Int. Cl. G06K 19/06 (2006.01) | ||
| U.S. Cl. 235—492 [235/451] | 11 Claims |
| 1. A radio-frequency-identification tag antenna comprising:
a film base having a rectangular shape and having pads for mounting a chip;
a first antenna pattern and a second antenna pattern that are disposed on the film base to be connected to the chip via the
pads for transmission and reception, the first antenna pattern extending along longitudinal side of the film base, the second
antenna pattern extending in parallel with the first antenna pattern; and
a cut line that is formed on the film base between the first and the second antenna patterns along the first and the second
antenna patterns from an inside near the pads to an outer edge of the film base,
wherein the second antenna pattern has a folding section and when the second antenna pattern is folded or bent at the folding
section, the second antenna pattern has a portion extending from the rectangular shape in a predetermined direction,
wherein the first and the second antenna patterns are formed on at least one of a front surface and a back surface of the
film base, and
wherein when the first and the second antenna patterns are formed on both the front surface and the back surface of the film
base, conductive through-holes, through which the first and the second antenna patterns formed on the front surface and the
back surface become conductive, are provided on the film base.
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