Pixel, organic light emitting display device having data signal and reset voltage supplied through demultiplexer, and driving method thereof

摘要

A method for driving an organic light emitting display device capable of reducing the number of output lines in a data driver, as well as ensuring a sufficient driving time. The method for driving the organic light emitting display device includes steps of supplying a data signal and a reset voltage to an output line during a horizontal period; supplying the data signal and the reset voltage, supplied to the output line, to a plurality of data lines using a demultiplexer; charging a voltage corresponding to the data signal in a pixel connected with one of the data lines during a period when a scan signal is supplied to a current scan line of the pixel; and allowing the pixel to emit light corresponding to the charged voltage.

主权项

1. A method for driving an organic light emitting display device with a plurality of data signals and a reset signal having a lower voltage than those of the data signals during a plurality of scan periods including a first scan period and a second scan period immediately subsequent to the first scan period, each of the scan periods comprising a plurality of data-then-reset periods including a first data-then-reset period, the method comprising:
supplying a first data signal of the data signals and then the reset signal from a data driver to an output line coupled between the data driver and a demultiplexer during the first data-then-reset period of the first scan period and concurrently with supplying a first control signal from a demultiplexer control unit to the demultiplexer, the supplying of the first control signal overlapping with the supplying of the first data signal and with the supplying of the reset signal; supplying the first data signal and then the reset signal, supplied to the output line during the first data-then-reset period of the first scan period, to a first data line of a plurality of data lines through the demultiplexer coupled to the output line, as selected by the first control signal; resetting a pixel corresponding to the second scan period, by the reset signal from the first data-then-reset period of the first scan period and supplied by the first data line; supplying a second data signal of the data signals and then the reset signal from the data driver to the output line during the first data-then-reset period of the second scan period; supplying the second data signal and then the reset signal, supplied to the output line during the first data-then-reset period of the second scan period, to the first data line through the demultiplexer; charging a voltage corresponding to the second data signal in the pixel during the first data-then-reset period of the second scan period when a scan signal is supplied to a current scan line of the pixel; and allowing the pixel to emit light corresponding to the charged voltage.