Semiconductor device including flip-flop and logic circuit

Patent metadata

Field	Value
Publication number	US-9059689-B2
Application number	US-201414160774-A
Country	US
Kind code	B2
Filing date	Jan 22, 2014
Priority date	Jan 24, 2013
Publication date	Jun 16, 2015
Grant date	Jun 16, 2015

Abstract

To provide a semiconductor device capable of adjusting the timing of a clock signal or a high-quality semiconductor device. The semiconductor device includes a first transistor and a circuit including a second transistor. A channel of the first transistor is formed in an oxide semiconductor layer. A first signal is input to one of a source and a drain of the first transistor. The other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor. A first clock signal is input to the circuit. The circuit outputs a second clock signal. The timing of the second clock signal is different from that of the first clock signal.

First claim

What is claimed is:

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 t…

Assignees

• Semiconductor Energy Lab

Inventors

• Kato Kiyoshi
• Uesugi Wataru

Classifications

• H03K5/05

  Electricity · mapped topic

• H03K2005/00104

  Electricity · mapped topic

• H03K2005/00241

  Electricity · mapped topic

• H03K5/06 Primary

  Electricity · mapped topic