Patent ID: 9646540
Date: 2017-05-09
CPC Classifications: G09G

Claim:
1. An organic light emitting diode (OLED) display device comprising: a first transistor configured to supply a data voltage to a first node according to a scan signal; a first capacitor connected to the first node at one end of the first capacitor, and connected to a second node at the other end; a second transistor configured to supply a reference voltage to the second node according to a sensing signal; a driving transistor including a drain electrode receiving a high-level source voltage or an initial voltage, a gate electrode connected to the second node, and a source electrode connected to a third node; a third transistor configured to supply the reference voltage to the third node according to the scan signal; and an OLED including a cathode electrode receiving a low-level source voltage and an anode electrode directly connected to the third node, wherein the initial voltage is supplied to the drain electrode of the driving transistor in units of two or more frames.