Organic light emitting display device and driving method thereof

An organic light emitting display device, comprising:

• a plurality of blocks, each of the plurality of blocks including at least two horizontal lines;
• first scan lines corresponding to respective ones of the horizontal lines;
• control lines corresponding to respective ones of the blocks;
• and
• a control driver to drive the control lines, wherein a pixel on an ith (i is a natural number) horizontal line of a kth (k is a natural number) block includes:
• a first transistor coupled between a first power source and a first node, the first transistor having a gate electrode directly connected to a second node;
• an organic light emitting diode coupled between the first node and a second power source;
• a second transistor including a first electrode connected to the second node and a second electrode connected to a third node, the second transistor to be turned on when a first scan signal is supplied to an ith first scan line;
• a third transistor including a first electrode connected to the third node and a second electrode connected to the first node, the third transistor to be turned on when the first scan signal is supplied to an (i+1)th first scan line;
• a first capacitor coupled between a kth control line and the second node;
• and
• a second capacitor coupled between the third node and a data line, wherein
• the pixel is driven, with a frame period divided into a first period, a second period, a third period, and a fourth period, and
• the second electrode of the second transistor is directly connected to the first electrode of the third transistor.

An organic light emitting display device, comprising:

• a plurality of pixels including a pixel on an ith (i is a natural number) horizontal line, the pixels being driven, with a frame period divided into a first period, a second period, a third period, and a fourth period, the pixel including:
• a first transistor coupled between a first power source and a first node, the first transistor having a gate electrode directly connected to a second node;
• an organic light emitting diode coupled between the first node and a second power source;
• a second transistor including a first electrode connected to the second node and a second electrode connected to a third node, the second transistor to be turned on when a first scan signal is supplied to an ith first scan line;
• a third transistor including a first electrode connected to the third node and a second electrode connected to the first node, the third transistor to be turned on when the first scan signal is supplied to an (i+1)th first scan line;
• a fourth transistor coupled between the first power source and the first transistor, the fourth transistor to be turned on when an emission control signal is supplied to an ith emission control line;
• a first capacitor coupled between a control line commonly coupled to the pixels and the second node;
• and
• a second capacitor coupled between the third node and a data line, wherein
• the second electrode of the second transistor is directly connected to the first electrode of the third transistor.

A method for driving an organic light emitting display device based on a frame period divided into a first period, a second period, a third period, and a fourth period, the method comprising:

• during the first period, initializing an anode electrode of an organic light emitting diode in each of pixels to a specific voltage, the specific voltage corresponding to a first voltage supplied to the pixels through a first power source;
• during the second period, initializing a gate electrode of a driving transistor in each of the pixels to the specific voltage;
• during the third period, storing a voltage corresponding to a threshold voltage of the driving transistor in a first capacitor in each of the pixels;
• and
• during the fourth period, sequentially supplying data signals to the pixels in units of horizontal lines and allowing the pixels to sequentially emit light based on corresponding ones of the data signals and a third voltage supplied to the pixels through the first power source,
• wherein the first power source has the first voltage in the first period and the second period,
• wherein the first power source has a second voltage lower than the first voltage in the third period, and
• wherein the first power source has the third voltage higher than the first voltage in the fourth period.