Semiconductor device and electronic appliance
First Claim
Patent Images
1. A semiconductor device comprising:
- a first transistor;
a second transistor;
a third transistor;
a fourth transistor;
a fifth transistor; and
a sixth transistor,wherein a first terminal of the first transistor is electrically connected to a first wiring, and a second terminal of the first transistor is electrically connected to a second wiring,wherein a first terminal of the second transistor is electrically connected to a third wiring, and a second terminal of the second transistor is electrically connected to the second wiring,wherein a first terminal of the third transistor is electrically connected to the first wiring, a second terminal of the third transistor is electrically connected to a gate of the first transistor, and a gate of the third transistor is electrically connected to a fourth wiring,wherein a first terminal of the fourth transistor is electrically connected to the third wiring, a second terminal of the fourth transistor is electrically connected to the gate of the first transistor, and a gate of the fourth transistor is electrically connected to a gate of the second transistor,wherein a first terminal of the fifth transistor is electrically connected to a fifth wiring, a second terminal of the fifth transistor is electrically connected to the gate of the second transistor, andwherein a first terminal of the sixth transistor is electrically connected to the third wiring, a second terminal of the sixth transistor is electrically connected to the gate of the second transistor, and a gate of the sixth transistor is electrically connected to the fourth wiring.
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Abstract
The amplitude voltage of a signal input to a level shifter can be increased and then output by the level shifter circuit. Specifically, the amplitude voltage of the signal input to the level shifter can be increased to be output. This decreases the amplitude voltage of a circuit (a shift register circuit, a decoder circuit, or the like) which outputs the signal input to the level shifter. Consequently, power consumption of the circuit can be reduced. Alternatively, a voltage applied to a transistor included in the circuit can be reduced. This can suppress degradation of the transistor or damage to the transistor.
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Citations
29 Claims
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1. A semiconductor device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor; and a sixth transistor, wherein a first terminal of the first transistor is electrically connected to a first wiring, and a second terminal of the first transistor is electrically connected to a second wiring, wherein a first terminal of the second transistor is electrically connected to a third wiring, and a second terminal of the second transistor is electrically connected to the second wiring, wherein a first terminal of the third transistor is electrically connected to the first wiring, a second terminal of the third transistor is electrically connected to a gate of the first transistor, and a gate of the third transistor is electrically connected to a fourth wiring, wherein a first terminal of the fourth transistor is electrically connected to the third wiring, a second terminal of the fourth transistor is electrically connected to the gate of the first transistor, and a gate of the fourth transistor is electrically connected to a gate of the second transistor, wherein a first terminal of the fifth transistor is electrically connected to a fifth wiring, a second terminal of the fifth transistor is electrically connected to the gate of the second transistor, and wherein a first terminal of the sixth transistor is electrically connected to the third wiring, a second terminal of the sixth transistor is electrically connected to the gate of the second transistor, and a gate of the sixth transistor is electrically connected to the fourth wiring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A semiconductor device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor; and a sixth transistor, wherein a first terminal of the first transistor is electrically connected to a first wiring, and a second terminal of the first transistor is electrically connected to a second wiring, wherein a first terminal of the second transistor is electrically connected to a third wiring, and a second terminal of the second transistor is electrically connected to the second wiring, wherein a second terminal of the third transistor is electrically connected to a gate of the first transistor, wherein a first terminal of the fourth transistor is electrically connected to the third wiring, a second terminal of the fourth transistor is electrically connected to the gate of the first transistor, and a gate of the fourth transistor is electrically connected to a gate of the second transistor, wherein a first terminal of the fifth transistor is electrically connected to a fifth wiring, a second terminal of the fifth transistor is electrically connected to the gate of the second transistor, and a gate of the fifth transistor is electrically connected to a sixth wiring, and wherein a first terminal of the sixth transistor is electrically connected to the third wiring, a second terminal of the sixth transistor is electrically connected to the gate of the second transistor, and a gate of the sixth transistor is electrically connected to a fourth wiring. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A semiconductor device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor; and a sixth transistor, wherein a first terminal of the first transistor is electrically connected to a first wiring, and a second terminal of the first transistor is electrically connected to a second wiring, wherein a first terminal of the second transistor is electrically connected to a third wiring, and a second terminal of the second transistor is electrically connected to the second wiring, wherein a first terminal of the third transistor is electrically connected to a fourth wiring and a second terminal of the third transistor is electrically connected to a gate of the first transistor, wherein a first terminal of the fourth transistor is electrically connected to the third wiring, a second terminal of the fourth transistor is electrically connected to the gate of the first transistor, and a gate of the fourth transistor is electrically connected to a gate of the second transistor, wherein a first terminal of the fifth transistor is electrically connected to a fifth wiring, a second terminal of the fifth transistor is electrically connected to the gate of the second transistor, and a gate of the fifth transistor is electrically connected to a sixth wiring, and wherein a first terminal of the sixth transistor is electrically connected to the third wiring, a second terminal of the sixth transistor is electrically connected to the gate of the second transistor, and a gate of the sixth transistor is electrically connected to the fourth wiring. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A semiconductor device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor; and a sixth transistor, wherein a first terminal of the first transistor is electrically connected to a first wiring, and a second terminal of the first transistor is electrically connected to a second wiring, wherein a first terminal of the second transistor is electrically connected to a third wiring, and a second terminal of the second transistor is electrically connected to the second wiring, wherein a second terminal of the third transistor is electrically connected to a gate of the first transistor and a gate of the third transistor is electrically connected to a fourth wiring, wherein a first terminal of the fourth transistor is electrically connected to the third wiring, a second terminal of the fourth transistor is electrically connected to the gate of the first transistor, and a gate of the fourth transistor is electrically connected to a gate of the second transistor, wherein a first terminal of the fifth transistor is electrically connected to a fifth wiring, a second terminal of the fifth transistor is electrically connected to the gate of the second transistor, wherein a first terminal of the sixth transistor is electrically connected to the third wiring, a second terminal of the sixth transistor is electrically connected to the gate of the second transistor, and a gate of the sixth transistor is electrically connected to the fourth wiring, and wherein a first signal is input to the fourth wiring, wherein a second signal is output from the second wiring, and wherein an amplitude voltage of the second signal is higher than an amplitude voltage of the first signal. - View Dependent Claims (26, 27, 28, 29)
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Specification