Patent ID: 9607546
Date: 2017-03-28
CPC Classifications: G09G

Claim:
1. A display panel of an organic light emitting display device, the display panel including a plurality of pixel circuits, each of the pixel circuits comprising: an emission unit including an organic light emitting diode; a pixel driving unit configured to drive the emission unit based on a scan signal and a data signal; and a switch unit configured to control an electrical connection between the emission unit and the pixel driving unit based on an emission signal, a capacitance of a first parasitic capacitor coupled between the emission unit included in a first pixel circuit of the pixel circuits and the pixel driving unit included in the first pixel circuit being smaller than a capacitance of a second parasitic capacitor coupled between the emission unit included in the first pixel circuit and the pixel driving unit included in a second pixel circuit of the pixel circuits adjacent to the first pixel circuit, wherein the emission unit comprises: the organic light emitting diode having a first electrode coupled to the switch unit, and a second electrode coupled to a first power supply voltage; a first transistor having a gate electrode receiving the scan signal, a first electrode coupled to the first electrode of the organic light emitting diode, and a second electrode coupled to a bias voltage; and a first capacitor having a first electrode coupled to the first electrode of the organic light emitting diode, and a second electrode coupled to the second electrode of the organic light emitting diode, wherein the switch unit comprises: a second transistor having a gate electrode receiving the emission signal, a first electrode coupled to the pixel diving unit, and a second electrode coupled to the emission unit, and wherein the first capacitor stores the bias voltage when the second transistor electrically separates the emission unit from the pixel driving unit during a turn-off period of the emission signal.