Patent ID: 8159421
Filing Date: 2012-04-17
Classification: G09G

Abstract:
1. An organic light emitting diode (OLED) display, comprising: a plurality of data lines to which a data voltage is supplied; a plurality of pairs of gate lines each comprising a first gate lines to which a first scan pulse is supplied and a second gate lines to which a second scan pulse-partially overlapping the first scan pulse in an opposed phase is supplied; a high potential driving voltage source for generating a high potential driving voltage; a low potential driving voltage source for generating a low potential driving voltage; a sustain driving voltage source for generating a sustain driving voltage having a value between the high potential driving voltage and the low potential driving voltage; an OLED that emits light by current that flows between the high potential driving voltage source and the low potential driving voltage source; a driving device comprising a drain electrode, a gate electrode connected to a first node, and a source electrode connected to the low potential driving voltage source to control the current that flows through the OLED; a storage capacitor connected between the first node and a second node; and a switch circuit, comprising a first switch device for switching a current path between the OLED and a drain electrode of the driving device in response to the second scan pulse; a second switch device for switching a current path between the drain electrode of the driving device and the first node in response to the first scan pulse; a third switch device for switching a current path between the data line and the second node in response to the first scan pulse; and a fourth switch device for switching a current path between the sustain driving voltage source and the second node in response to the second scan pulse, wherein the first and second scan pulses have opposed phases in other periods than a period between a rising edge of the first scan pulse and a falling edge of the second scan pulse generated after the rising edge of the first scan pulse.