Back to results
US 2012/0007096 A1Published application
Id chip and ic card
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorShunpei YAMAZAKI
Life of this patent
Estimating the term…
Abstract
The present invention provides an ID chip or an IC card in which the mechanical strength of an integrated circuit can be enhanced without suppressing a circuit scale. An ID chip or an IC card of the present invention has an integrated circuit in which a TFT (a thin film transistor) is formed from an insulated thin semiconductor film. Further, an ID chip or an IC card of the present invention has a light-emitting element and a light-receiving element each using a non-single-crystal thin film for a layer conducting photoelectric conversion. Such a light-emitting element or a light-receiving element may be formed consecutively to (integrally with) an integrated circuit or may be formed separately and attached to an integrated circuit.
Claims18
A semiconductor device comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage, and
- wherein the conductive layer, the light-emitting element and the light-receiving element are electrically connected to the circuit.
4 more elements
A semiconductor device comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage, and
- wherein the circuit, the light-emitting element and the light-receiving element are formed on a same substrate.
4 more elements
A semiconductor device comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage, and
- wherein the conductive layer, the circuit, the light-emitting element and the light-receiving element are formed on a same substrate.
4 more elements
A semiconductor device comprising:
- a circuit;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the circuit comprises a connection terminal, a rectification circuit configured to rectify an alternating voltage generated by a radio wave, a power supply circuit configured to generate a power supply voltage by using a voltage outputted from the rectification circuit, a demodulation circuit, and a logic circuit, and
- wherein the circuit, the light-emitting element and the light-receiving element are formed on a same substrate.
3 more elements
A semiconductor device comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the conductive layer, the light-emitting element and the light-receiving element are electrically connected to the circuit,
- wherein the circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent, and
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage generated by the conductive layer.
5 more elements
A semiconductor device comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the conductive layer, the light-emitting element and the light-receiving element are electrically connected to the circuit,
- wherein the circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent, and
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage generated by the conductive layer.
5 more elements
A semiconductor device comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the conductive layer, the light-emitting element and the light-receiving element are electrically connected to the circuit,
- wherein the conductive layer, the circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent, and
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage generated by the conductive layer.
5 more elements
A semiconductor device comprising:
- a circuit;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the circuit comprises a connection terminal, a rectification circuit configured to rectify an alternating voltage generated by a radio wave, a power supply circuit configured to generate a power supply voltage by using a voltage outputted from the rectification circuit, a demodulation circuit, and a logic circuit,
- wherein the circuit, the light-emitting element and the light-receiving element are formed integrally, and
- wherein the circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent.
4 more elements
An IC card comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the conductive layer, the light-emitting element and the light-receiving element are electrically connected to the circuit,
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage generated by the conductive layer, and
- wherein the circuit, the light-emitting element and the light-receiving element are formed on a same substrate.
5 more elements
An IC card comprising:
- a circuit;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the circuit comprises a connection terminal, a rectification circuit configured to rectify an alternating voltage generated by a radio wave, a power supply circuit configured to generate a power supply voltage by using a voltage outputted from the rectification circuit, a demodulation circuit, and a logic circuit, and
- wherein the circuit, the light-emitting element and the light-receiving element are formed on a first substrate.
3 more elements
An IC card comprising:
- a conductive layer configured to generate an alternating voltage based on receiving a radio wave;
- a circuit comprising a transistor;
- a light-receiving element configured to receive a signal by optical communication;
- and
- a light-emitting element configured to transmit a signal by optical communication,
- wherein the conductive layer, the light-emitting element and the light-receiving element are electrically connected to the circuit,
- wherein the circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent,
- wherein the circuit includes a power supply circuit configured to generate a power supply voltage from the alternating voltage generated by the conductive layer.
5 more elements
Dependencies are inferred from the claim text.