Electronic circuit comprising thin-film transistors
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsJun Koyama, Kazunori Watanabe
Life of this patent
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Abstract
An object is to provide a semiconductor device that can realize a function of a thyristor without complication of the process. A semiconductor device including a memory circuit that stores a predetermined potential by reset operation and initialization operation is provided with a circuit that rewrite data in the memory circuit in accordance with supply of a trigger signal. The semiconductor device has a structure in which a current flowing through the semiconductor device is supplied to a load by rewriting data in the memory circuit, and thus can function as a thyristor.
Claims15
A semiconductor device comprising:
- a first wiring and a second wiring;
- and
- a first to an eighth transistors, each of the eight transistors comprising a gate, a first terminal, and a second terminal,
- wherein the first wiring is connected to the gate of the first transistor,
- wherein the first terminal of the first transistor is connected to the first terminal of the second transistor,
- wherein the second terminal of the second transistor is connected to the first terminal of the third transistor, to the first terminal of the fourth transistor, and to the gate of the sixth transistor,
- wherein the gate of the fourth transistor is connected to the first terminal of the sixth transistor, to the first terminal of the fifth transistor, to the gate of the eighth transistor, and to the second wiring,
- wherein the gate of the second transistor, the first terminal of the seventh transistor, and the first terminal of the eighth transistor are connected to one another, and
- wherein the semiconductor device is configured so that potentials applied to the second terminal of the first transistor, to the second terminal of the fourth transistor, to the second terminal of the sixth transistor and to the second terminal of the eighth transistor are each lower than any of potentials applied to the second terminal and to the gate of the third transistor, to the second terminal and to the gate of the fifth transistor, and to the second terminal and to the gate of the seventh transistor.
A semiconductor device comprising:
- a first to a fifth wirings;
- and
- a first to an eighth transistors, each of the eight transistors comprising a gate, a first terminal, and a second terminal,
- wherein the first wiring is connected to the gate of the first transistor,
- wherein the first terminal of the first transistor is connected to the first terminal of the second transistor,
- wherein the second terminal of the second transistor is connected to the first terminal of the third transistor, to the first terminal of the fourth transistor, and to the gate of the sixth transistor,
- wherein the gate of the fourth transistor is connected to the first terminal of the sixth transistor, to the first terminal of the fifth transistor, to the gate of the eighth transistor, and to the second wiring,
- wherein the gate of the second transistor, the first terminal of the seventh transistor, and the first terminal of the eighth transistor are connected to one another,
- wherein the third wiring is connected to the second terminal of the first transistor, to the second terminal of the fourth transistor, to the second terminal of the sixth transistor and to the second terminal of the eighth transistor,
- wherein the fourth wiring is connected to the second terminal of the third transistor, to the second terminal of the fifth transistor, and to the second terminal of the seventh transistor, and
- wherein the fifth wiring is connected to the gate of the third transistor, to the gate of the fifth transistor, and to the gate of the seventh transistor.
Dependencies are inferred from the claim text.