Patent ID: 8593377
Filing Date: 2013-11-26
Classification: G09G

Abstract:
1. A semiconductor device comprising: a first wiring; a second wiring; a first current source circuit; and a second current source circuit electrically connected to the first current source circuit, wherein the first current source circuit comprises: a first transistor; a first switch; a second switch; and a first capacitor, wherein the second current source circuit comprises: a third switch; a second transistor; a third transistor; and a second capacitor, wherein one of a source and a drain of the first transistor is electrically connected to the first wiring and a first terminal of the first capacitor, wherein the other of the source and the drain of the first transistor is electrically connected to a first terminal of the first switch, wherein a gate of the first transistor is electrically connected to a second terminal of the first capacitor and a first terminal of the second switch, wherein the second wiring is electrically connected to a second terminal of the first switch and a second terminal of the second switch, wherein a first terminal of the third switch is electrically connected to a gate of the second transistor, a gate of the third transistor, and a first terminal of the second capacitor, and wherein one of a source and a drain of the second transistor is electrically connected to a second terminal of the second capacitor and one of a source and a drain of the third transistor.