Patent ID: 8861288
Filing Date: 2014-10-14
Classification: G11C,H03K,H03L

Abstract:
1. A level-shift circuit comprising: a first transistor comprising: an inverter circuit electrically connected to the first transistor, the inverter circuit including an input terminal and an output terminal, wherein the first gate electrode and the source electrode are configured to be supplied with a first power source potential, wherein the second gate electrode is configured to be supplied with a second power source potential, wherein the inverter circuit is configured to be supplied with a third power source potential as a power source potential, wherein the input terminal is configured to be supplied with an input signal, wherein either the third power source potential or a potential obtained by subtracting an amount of change in a threshold voltage of the first transistor from the first power source potential is supplied to the inverter circuit as a power source voltage, wherein an output signal is output from the inverter circuit, and wherein the channel formation region of the first transistor is formed in an oxide semiconductor film.