Semiconductor device and electronic appliance
First Claim
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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 one of a source and a drain of the first transistor is electrically connected to one of a source and a drain of the second transistor,wherein a gate of the first transistor is electrically connected to one of a source and a drain of the third transistor and one of a source and a drain of the fourth transistor,wherein a gate of the fourth transistor is electrically connected to one of a source and a drain of the fifth transistor and one of a source and a drain of the sixth transistor,wherein a gate of the third transistor is electrically connected to a gate of the sixth transistor, andwherein the other of the source and the drain of the second transistor, the other of the source and the drain of the fourth transistor, and the other of the source and the drain of the sixth transistor are electrically connected to a first 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
34 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 one of a source and a drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, wherein a gate of the first transistor is electrically connected to one of a source and a drain of the third transistor and one of a source and a drain of the fourth transistor, wherein a gate of the fourth transistor is electrically connected to one of a source and a drain of the fifth transistor and one of a source and a drain of the sixth transistor, wherein a gate of the third transistor is electrically connected to a gate of the sixth transistor, and wherein the other of the source and the drain of the second transistor, the other of the source and the drain of the fourth transistor, and the other of the source and the drain of the sixth transistor are electrically connected to a first wiring. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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 one of a source and a drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, wherein a gate of the first transistor is electrically connected to one of a source and a drain of the third transistor and one of a source and a drain of the fourth transistor, wherein a gate of the fourth transistor is electrically connected to one of a source and a drain of the fifth transistor and one of a source and a drain of the sixth transistor, wherein a gate of the third transistor is electrically connected to a gate of the sixth transistor, wherein the other of the source and the drain of the second transistor, the other of the source and the drain of the fourth transistor, and the other of the source and the drain of the sixth transistor are electrically connected to a first wiring, and wherein each of the first transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, and the sixth transistor comprises a semiconductor layer comprising an oxide semiconductor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A display device comprising:
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a gate driver comprising a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, and a sixth transistor; and a pixel portion electrically connected to the gate driver, wherein one of a source and a drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, wherein a gate of the first transistor is electrically connected to one of a source and a drain of the third transistor and one of a source and a drain of the fourth transistor, wherein a gate of the fourth transistor is electrically connected to one of a source and a drain of the fifth transistor and one of a source and a drain of the sixth transistor, wherein a gate of the third transistor is electrically connected to a gate of the sixth transistor, wherein the other of the source and the drain of the second transistor, the other of the source and the drain of the fourth transistor, and the other of the source and the drain of the sixth transistor are electrically connected to a first wiring, and wherein the pixel portion comprises a pixel comprising a liquid crystal element. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A display device comprising:
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a gate driver comprising a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, and a sixth transistor; and a pixel portion electrically connected to the gate driver, wherein one of a source and a drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, wherein a gate of the first transistor is electrically connected to one of a source and a drain of the third transistor and one of a source and a drain of the fourth transistor, wherein a gate of the fourth transistor is electrically connected to one of a source and a drain of the fifth transistor and one of a source and a drain of the sixth transistor, wherein a gate of the third transistor is electrically connected to a gate of the sixth transistor, wherein the other of the source and the drain of the second transistor, the other of the source and the drain of the fourth transistor, and the other of the source and the drain of the sixth transistor are electrically connected to a first wiring, wherein each of the first transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, and the sixth transistor comprises a semiconductor layer comprising an oxide semiconductor, and wherein the pixel portion comprises a pixel comprising a liquid crystal element. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification