US 2020/0027401 A1 · ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME

Abstract

An organic light emitting display device includes: a display unit including a plurality of pixels each coupled to a first scan line, a second scan line, and a data line; a scan driver configured to supply, to the display unit, a plurality of first scan pulses corresponding to a bias period and a second scan pulse corresponding to a data write period after the bias period through the respective first and second scan lines; an emission driver configured to supply an emission control signal to the display unit through emission control lines; a data driver configured to supply a data voltage to the display unit through the data lines; and a power supply configured to commonly supply, to the pixels, an initialization voltage, the initialization voltage having a voltage level switching between a first voltage level and a second voltage level in a preset period.

Claims20

Dependent claims

An organic light emitting display device comprising:

a display unit including a plurality of pixels each coupled to a first scan line, a second scan line, and a data line;
a scan driver configured to supply, to the display unit, a plurality of first scan pulses corresponding to a bias period and a second scan pulse corresponding to a data write period after the bias period through the respective first and second scan lines;
an emission driver configured to supply an emission control signal to the display unit through emission control lines;
a data driver configured to supply a data voltage to the display unit through the data lines;
and
a power supply configured to commonly supply, to the pixels, an initialization voltage, the initialization voltage having a voltage level switching between a first voltage level and a second voltage level in a preset period.

3 more elements

A method for driving an organic light emitting display device, the method comprising:

supplying an initialization voltage of a current frame to a pixel in response to a plurality of first scan pulses supplied through a first scan line during a bias period of the current frame;
supplying a previous data voltage to the pixel in response to the first scan pulses supplied to a second scan line during the bias period, the previous data voltage being a data voltage of a previous pixel line;
supplying the initialization voltage having a first voltage level to the pixel in response to a second scan pulse supplied through the first scan line in an initialization period of the current frame subsequent to the bias period;
supplying a current data voltage to the pixel in response to the second scan pulse supplied through the second scan line in a data write period of the current frame subsequent to the initialization period, the current data voltage being a data voltage of the pixel;
and
emitting light with a grayscale corresponding to the current data voltage in response to an is emission control signal supplied to an emission control line,
wherein the initialization voltage has a voltage level switching between the first voltage level and a second voltage level larger than the first voltage level.

4 more elements

Dependencies are inferred from the claim text.

Organic light emitting display device and method for driving the same

Life of this patent

Organic light emitting display device and method for driving the same

Life of this patent

Abstract

Claims20