Patent ID: 7796102
Filing Date: 2010-09-14
Classification: G09G

Abstract:
1. A display device comprising: a plurality of scanning lines arranged in a first direction, which are selected successively; a plurality of data lines arranged in a direction intersecting the first direction, to which a writing electric current corresponding to brightness information is supplied according to the scanning line selection; and a plurality of pixels, arranged at the intersecting points between the plurality of scanning lines and the plurality of data lines, wherein each of the pixels comprises a light emitting element, a driving transistor for supplying a driving current to the light emitting element, a capacitor connected to a gate of the driving transistor for storing writing data, a first transistor that is turned on during a writing period in which the scanning lines are scanned and connects the data lines and a drain of the driving transistor, a second transistor that is turned on during the writing period and short-circuits the gate-drain of the driving transistor while at the same time supplying the writing electric current supplied from the data lines to the capacitor, and a third transistor that disconnects the drain of the driving transistor and a predetermined electric power source during the writing period; during the writing period, the writing electric current is supplied to a circuit comprising the first transistor, the driving transistor in which the gate-drain is short-circuited, and the light emitting element, so that the capacitor is charged so as to cause the gate of the driving transistor to have a gate potential corresponding to the writing electric current; and during a reading period after the writing period, the first and second transistors are turned off and the third transistor is turned on so that the driving transistor drives the light emitting element with a driving electric current corresponding to the gate potential.