Patent ID: 8432338

Claim:
An image display device having a plurality of pixel circuits arranged in a matrix form, each of the pixel circuits comprising: a current-driven type light-emitting element; a driver transistor for supplying an electric current to the current-driven type light-emitting element; a holding capacitor for holding a voltage that determines an amount of the electric current supplied from the driver transistor; and a writing switch for writing a voltage corresponding to an image signal into the holding capacitor, wherein the driver transistor formed in each of the pixel circuits is an N-channel transistor, each of the pixel circuits further comprises a detection trigger line and a detection trigger capacitor for supplying a voltage to change a source voltage of the driver transistor, and one terminal of the detection trigger capacitor is connected to a source of the driver transistor and the other terminal of the detection trigger capacitor is connected to the detection trigger line, wherein when an amount of voltage on the detection trigger line is changed, an amount of a voltage change on a connection node between the detection trigger capacitor and the holding capacitor is equal or less than a value of C 2 /(C 1 +C 2 ) multiplied by the amount of the voltage change on the detection trigger line, where C 1 is a capacitance of the holding capacitor and C 2 is a capacitance of the detection trigger capacitor, and wherein the connection node between the detection trigger capacitor and the holding capacitor is connected to a source of the driver transistor exclusive of a connection to a gate of the driver transistor.