Patent ID: 9570009
Date: 2017-02-14
CPC Classifications: G09G,H04N

Claim:
1. A pixel circuit of a display device, the pixel circuit comprising: an organic light emitting device configured to emit light through a current; a driving transistor configured to control the current flowing in the organic light emitting device; a first capacitor including a first electrode connected to a gate electrode and a second electrode directly connected to a source electrode of the driving transistor, respectively, wherein the first electrode is directly connected to a third switching transistor directly connected to a reference voltage line, and the second electrode is connected to a fourth switching transistor that is connected to the reference voltage line; a second capacitor in which a data voltage is previously stored, the second capacitor being directly connected to the reference voltage line, and further connected to a node between a first switching transistor and a second switching transistor; and a switching unit configured to charge the data voltage, which is stored in the second capacitor, in the first capacitor, and allow the organic light emitting device to emit light by driving the driving transistor in accordance with the data voltage charged in the first capacitor and at the same time charging a data voltage of next frame in the second capacitor.