A semiconductor device includes a first wiring; a first switch having a function of controlling electrical connection between the first wiring and first and second capacitors; a second wiring; a transistor electrically connected to the second wiring and the first capacitor; a second switch having a function of controlling electrical connection between a gate and a source or a drain of the transistor; a third switch having a function of controlling electrical connection between the transistor and the first and second capacitors; a fourth switch having a function of controlling electrical connection between the second capacitor and the transistor; a third wiring; and a fifth switch having a function of controlling electrical connection between the third wiring and the second capacitor so that an operation defect of the semiconductor device can be prevented.