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US 8,030,745 B2Granted
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.
Claims16
A semiconductor device comprising:
- an antenna;
- an integrated circuit comprising a thin film 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 light-receiving element has a layer for conducting photoelectric conversion using a non-single crystal thin film,
- wherein the light-emitting element has an electroluminescent layer using a non-single crystal thin film,
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna, and
- wherein the antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit on the same substrate.
6 more elements
A semiconductor device comprising:
- an antenna;
- an integrated circuit comprising a thin film 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 antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit,
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna, and
- wherein the integrated circuit, the light-emitting element and the light-receiving element are formed on the same substrate.
5 more elements
A semiconductor device comprising:
- an antenna;
- an integrated circuit comprising a thin film 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 antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit,
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna, and
- wherein the antenna, the integrated circuit, the light-emitting element and the light-receiving element are formed on the same substrate.
5 more elements
A semiconductor device comprising:
- an integrated 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 integrated circuit comprises a connection terminal, a rectification circuit configured to rectify an alternating voltage generated by an antenna, 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 integrated circuit, the light-emitting element and the light-receiving element are formed on the same substrate.
3 more elements
A semiconductor device comprising:
- an antenna;
- an integrated circuit comprising a thin film 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 light-receiving element has a layer for conducting photoelectric conversion using a non-single crystal thin film,
- wherein the light-emitting element has an electroluminescent layer using a non-single crystal thin film,
- wherein the antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit,
- wherein the integrated circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent, and
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna.
7 more elements
A semiconductor device comprising:
- an antenna;
- an integrated circuit comprising a thin film 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 antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit,
- wherein the integrated circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent, and
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna.
5 more elements
A semiconductor device comprising:
- an antenna;
- an integrated circuit comprising a thin film 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 antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit,
- wherein the antenna, the integrated circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent, and
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna.
5 more elements
A semiconductor device comprising:
- an integrated 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 integrated circuit comprises a connection terminal, a rectification circuit configured to rectify an alternating voltage generated by an antenna, 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 integrated circuit, the light-emitting element and the light-receiving element are formed integrally, and
- wherein the integrated 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:
- an antenna;
- an integrated circuit comprising a thin film 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 antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit,
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna, and
- wherein the integrated circuit, the light-emitting element and the light-receiving element are formed on the same substrate.
5 more elements
An IC card comprising:
- an integrated 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 integrated circuit comprises a connection terminal, a rectification circuit configured to rectify an alternating voltage generated by an antenna, 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 integrated circuit, the light-emitting element and the light-receiving element are formed on the same substrate.
3 more elements
An IC card comprising:
- an antenna;
- an integrated circuit comprising a thin film 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 antenna, the light-emitting element and the light-receiving element are electrically connected to the integrated circuit,
- wherein the integrated circuit, the light-emitting element and the light-receiving element are attached to a substrate with an adhesive agent,
- wherein the integrated circuit includes a power supply circuit configured to generate a power supply voltage from an alternating voltage generated by the antenna.
5 more elements
Dependencies are inferred from the claim text.