Organic light emitting display and driving method thereof

An organic light emitting display comprising:

• a plurality of pixel circuits in a matrix;
• a plurality of first scan lines for transmitting selection signals to select the pixel circuits;
• a plurality of second scan lines for transmitting emission signals to control a duration of light emission of the pixel circuits;
• a first driver for sequentially delaying a primary signal having a pulse at a first level by a first period in response to a clock signal to generate secondary signals;
• a second driver for receiving the secondary signals and third signals, the third signals being inverted signals of the secondary signals, and for outputting the selection signals having a pulse at a second level when the secondary signals and the third signals are at the first level;
• and
• a third driver for receiving the plurality of secondary signals and fourth signals, and for outputting the emission signals, the emission signals having a pulse at the second level when the secondary signals and the fourth signals are at the first level.

An organic light emitting display comprising:

• a plurality of pixel circuits in a matrix;
• a plurality of first scan lines for transmitting selection signals to select the pixel circuits;
• a plurality of second scan lines for transmitting emission signals to control a duration of light emission of the pixel circuits;
• a first driver for sequentially delaying a primary signal having a pulse at a first level for a first period in response to a first clock signal to generate a plurality of output signals;
• a second driver for generating third signals having a pulse at a second level when second signals are at the first level, the second signals corresponding to a logical operation of adjacent first and second output signals among the plurality of output signals, and for outputting inverted signals of the second output signals as the emission signals;
• and
• a third driver for receiving the third signal, and for changing lateral ends of the pulse at the second level of the third signal into the first level during a predetermined period so as to output a fourth signal as the selection signal.

A method of driving an organic light emitting display having a plurality of first scan lines for transmitting a plurality of selection signals and a plurality of second scan lines for transmitting a plurality of emission signals, the method comprising:

• sequentially delaying a primary signal having a first level pulse by a first period to generate a plurality of secondary signals;
• inverting the secondary signals to output as the emission signals;
• and
• outputting a selection signal of the plurality of selection signals having a second level pulse when a secondary signal of the plurality of secondary signals and an emission signal of the plurality of emission signals are at the first level.

A method of driving a light emission display having a plurality of first scan lines for transmitting a selection signal and a plurality of second scan lines for transmitting an emission signal, the method comprising:

• synchronizing a primary signal having a first-level signal to a clock signal and sequentially delaying the synchronized signal by a first period to generate a plurality of secondary signals;
• inverting the secondary signals to generate a third signal having a second-level pulse;
• changing the lateral ends of the second level pulse of the third signal into the first level during a predetermined period so as to output the emission signal;
• and
• outputting the selection signal having the second-level pulse when the secondary signal and the emission signal are at the first level.

A method of driving an organic light emitting display having a plurality of first scan lines for transmitting a selection signal and a plurality of second scan lines for transmitting an emission signal, the method comprising:

• sequentially delaying a primary signal having a first level pulse by a first period to generate a plurality of secondary signals;
• inverting the secondary signals to generate the emission signal;
• outputting a third signal having a second-level pulse when the primary signal and the emission signal are at the first-level;
• and
• changing the lateral ends of the second level pulse of the third signal into the first level during a predetermined period so as to output the selection signal.