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US 7,924,228 B2Granted
Storage medium with built-in antenna
AssigneePanasonic Corporation
InventorsShozo Ochi, Norihito Tsukahara, Kazuhiro Ikurumi
Life of this patent
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Abstract
A storage medium with built-in antenna includes circuit board on which semiconductor element is placed, first and second magnetic layers sandwiching semiconductor element and circuit board, and first and second antenna coils disposed on first and second magnetic layers. First and second antenna coils are connected in parallel on a flexible sheet. First and second antenna coils are folded at the sides of first and second magnetic layers, respectively, and electrically connected to semiconductor element.
Claims12
A storage medium with built-in antenna, comprising:
- a semiconductor element including a communication function for sending and receiving a signal to and from external equipment via an antenna coil;
- a circuit board on which the semiconductor element is placed;
- a first magnetic layer and a second magnetic layer disposed sandwiching the semiconductor element and the circuit board;
- the first magnetic layer and the second magnetic layer being larger than the semiconductor element;
- a first antenna coil disposed on the first magnetic layer;
- and
- a second antenna coil disposed on the second magnetic layer;
- wherein the first antenna coil and the second antenna coil are connected in parallel on a single flexible sheet, the first antenna coil and the second antenna coil being folded at a side of the first magnetic layer and at a side of the second magnetic layer, respectively, and being electrically connected to the semiconductor element.
5 more elements
Dependencies are inferred from the claim text.