Patent ID: 8427397
Filing Date: 2013-04-23
Classification: G09G

Abstract:
1. A light emitting diode display device comprising: a plurality of pixel cells having a light emitting diode; a plurality of data lines for transmission of data signal having information on a picture; a plurality of gate lines for transmission of a gate signal having a gate high voltage, a first gate low voltage, and a second gate low voltage having a polarity opposite to the data signal, wherein the gate high voltage, the first gate low voltage and the second gate low voltage have potentials different from one another; wherein each of the pixel cells includes; a signal transmission switching device that connects the data line to a node according to the first gate high voltage from the gate line, a drive switching device that controls an intensity of a drive current being supplied to the light emitting diode according to a signal state of the node, a storage capacitor connected between the node and a source electrode or a drain electrode of the drive switching device, and a control switching device that connects the gate line to the node in response to the second gate low voltage from the gate line and a control signal from a control line; wherein the first gate low voltage is lower than the gate high voltage, and the second gate low voltage is lower than the first gate low voltage, and the control signal is a DC voltage higher than a sum of the second gate low voltage and a threshold voltage of the control switching device, and lower than the first gate low voltage.