Patent ID: 8749598
Filing Date: 2014-06-10
Classification: G09G

Abstract:
1. An organic light emitting diode display device comprising: a driving element including a control electrode connected to a first node, a first electrode connected to an input terminal of a high potential driving voltage, and a second electrode connected to a second node, and controlling a driving current; a first TFT that switches a current path between the first node and the second node in response to a scan pulse from a first gate line; a second TFT that switches a current path between a data line and a third node in response to the scan pulse; a third TFT that switches a current path between the third node and a reference voltage input terminal in response to a light emitting control pulse from a second gate line; a fourth TFT that switches a current path between the second node and a fourth node in response to the light emitting control pulse; an organic light emitting diode connected between the fourth node and a ground voltage input terminal to emit a light by the driving current; a storage capacitor connected between the first node and the third node; and a variable capacitor connected between the first node and the first gate line and having a capacity changed when the first TFT is turned on and off.