| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the operation delay occurring when a semiconductor device amplifying an error of two potentials and outputting it returns from the standby state. <P>SOLUTION: By a transistor in which a channel is formed in an oxide semiconductor layer, an electrical connection of an output terminal of a transconductance amplifier and one electrode of a capacitor is controlled. Consequently, in the case where the transconductance amplifier is in the standby state, charges can be retained over a long time at the one electrode of the capacitor by causing the transistor to be in an Off state. On the other hand, when the transconductance amplifier returns from the standby state, the charging and discharging of the capacitor can be promptly converged by causing the transistor to be in an On state. As a result, the operation of the semiconductor device can be promptly in a steady state. <P>COPYRIGHT: (C)2013,JPO&INPIT |
