Patent ID: 7187350
Filing Date: 2007-03-06
Classification: G09G

Abstract:
1. An active type light emitting display device in which a large number of pixel structures are arranged, said pixel structure at least comprising a light emitting element; a driving TFT driving the light emitting element so that the light emitting element emits light; a controlling TFT controlling a gate voltage of the driving TFT; a threshold voltage generating element provided between the controlling TFT and a gate of the driving TFT and generating a gate voltage given to the driving TFT by level shifting a voltage corresponding to a threshold voltage of the driving TFT; a capacitor temporarily holding the gate voltage of the driving TFT; and a reset element resetting the gate voltage held in the capacitor to a predetermined voltage, wherein a current restraining means for restraining excess current from flowing into the light emitting element via the driving TFT is operated in a reset period in which the gate voltage held in the capacitor is reset to a predetermined electrical potential via the reset element.