Wireless sensor device
First Claim
Patent Images
1. A semiconductor device comprising:
- a circuit comprising a transistor over an antistatic film;
an antenna electrically connected to the circuit;
a pressure sensor electrically connected to the circuit; and
a battery electrically connected to the circuit,wherein radio waves received by the antenna are converted into an electrical signal in the circuit, andwherein the electrical signal is charged in the battery.
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Abstract
A wireless sensor device capable of constant operation without replacement of batteries. The wireless sensor device is equipped with a rechargeable battery and the battery is recharged wirelessly. Radio waves received at an antenna circuit are converted into electrical energy and stored in the battery. A sensor circuit operates with the electrical energy stored in the battery, and acquires information. Then, a signal containing the information acquired is converted into radio waves at the antenna circuit, whereby the information can be read out wirelessly.
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Citations
15 Claims
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1. A semiconductor device comprising:
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a circuit comprising a transistor over an antistatic film; an antenna electrically connected to the circuit; a pressure sensor electrically connected to the circuit; and a battery electrically connected to the circuit, wherein radio waves received by the antenna are converted into an electrical signal in the circuit, and wherein the electrical signal is charged in the battery. - View Dependent Claims (2, 3, 4, 5)
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6. A semiconductor device comprising:
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a circuit comprising a transistor over an antistatic film; an antenna electrically connected to the circuit; a photo sensor electrically connected to the circuit; and a battery electrically connected to the circuit, wherein radio waves received by the antenna are converted into an electrical signal in the circuit, and wherein the electrical signal is charged in the battery. - View Dependent Claims (7, 8, 9, 10)
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11. A semiconductor device comprising:
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a circuit comprising a transistor over an antistatic film; an antenna electrically connected to the circuit; an odor sensor electrically connected to the circuit; and a battery electrically connected to the circuit, wherein radio waves received by the antenna are converted into an electrical signal in the circuit, and wherein the electrical signal is charged in the battery. - View Dependent Claims (12, 13, 14, 15)
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Specification