Organic light emitting display and driving method thereof

摘要

Disclosed are an organic light emitting display capable of preventing lowering of brightness and prolonging its a lifespan, and a driving method thereof. The organic light emitting display controls a level of a gate signal, by outputting a gate high voltage after controlling a level of the gate high voltage, according to a level of a threshold voltage sensed from each pixel of a display panel.

主权项

1. An organic light emitting display, comprising:
a display panel comprising:
a plurality of gate lines;a plurality of data lines; anda plurality of pixels disposed at intersections between the gate lines and the data lines, each of the plurality of pixels comprising:
a switching transistor;a driving transistor; andan organic light emitting diode; a driving voltage generator configured to:
sense a threshold voltage of the switching transistor of each pixel of the display panel; andoutput a gate high voltage after controlling a level of an original gate high voltage according to a level of the threshold voltage; and a gate driving unit configured to:
generate a gate signal according to a level-controlled gate high voltage output from the driving voltage generator; andsupply the generated gate signal to the switching transistor through the gate lines.