Patent ID: 8633872

Claim:
A semiconductor device comprising: a first transistor to which a first scan signal is applied to a gate through a first scan line, wherein the gate of the first transistor is connected to the first scan line; a second transistor to which a second scan signal is applied to a gate through a second scan line; a third transistor which is turned on or off depending on a potential of a current supply line, wherein either a source or a drain of the third transistor is connected to the first scan line; a fourth transistor which is turned on or off depending on a first signal and a second signal applied to a gate; a pixel electrode; and a light-emitting element which emits light by a driving current which flows between the pixel electrode and a counter electrode, wherein the first signal supplied through the first transistor and the third transistor from the first scan line is a signal which cuts an electrical connection between the current supply line and the pixel electrode through the fourth transistor; and wherein the second signal supplied through the second transistor from a data line is a signal which makes the current supply line and the pixel electrode electrically connected to each other through the fourth transistor.