Patent ID: 9059689
Filing Date: 2015-06-16
Classification: H03K

Abstract:
1. A semiconductor device comprising: a first transistor; a circuit including a second transistor; a flip-flop; and a logic circuit, wherein a channel of the first transistor is included in an oxide semiconductor layer, wherein an output of the logic circuit is input to a gate of the first transistor, wherein a first signal is input to one of a source and a drain of the first transistor, wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor, wherein a first clock signal is input to the circuit, wherein a second clock signal is output from the circuit to the flip-flop, wherein a second signal and an output signal of the flip-flop are input to the logic circuit, and wherein a timing of the second clock signal is different from a timing of the first clock signal.