Patent ID: 7903057
Filing Date: 2011-03-08
Classification: G09G

Abstract:
1. A display apparatus characterized by comprising scanning lines in rows, signal lines in columns, and pixels arranged in a matrix in portions where the scanning lines and the signal lines intersect with each other, wherein the pixels each include at least a sampling transistor, a driving transistor having an input node and an output node, a switching transistor, a light-emitting device, a holding capacitor, and an auxiliary capacitor, wherein the sampling transistor is arranged between the signal line and the input node, is brought into conduction in accordance with a control signal supplied from the scanning line, and writes to the holding capacitor a video signal supplied from the signal line, wherein the driving transistor outputs a driving current to the output node in accordance with a signal potential of the video signal written to the holding capacitor, wherein the holding capacitor is arranged between the input node and the output node, wherein the auxiliary capacitor is connected to the output node, and wherein the switching transistor is arranged between the output node and the light-emitting device, and in a predetermined light-emission period, the switching transistor is in an on-state and supplies the driving current to the light-emitting device to cause the light-emitting device to emit light at a brightness corresponding to the video signal, whereas in a non-light-emission period, the switching transistor is turned off to disconnect the light-emitting device from the output node, so that a potential generated at the output node due to an operation of the pixel performed in the non-light-emission period is prevented from being applied as a reverse-bias voltage to the light-emitting device of a diode type.