Pixel and organic light emitting display using the same

摘要

A pixel may include an organic light emitting diode (OLED) with a cathode electrode coupled to a second power source, a first transistor with a first electrode coupled to a data line, with a second electrode coupled to a first node, the first transistor being turned on when a scan signal is supplied to a scan line, a first capacitor coupled between the first node and a third power source to charge a first capacitor voltage corresponding to a data signal supplied from the data line, and a pixel circuit charged by the first capacitor voltage to supply current corresponding to a charged first power source voltage from a first power source to the second power source via the OLED.

主权项

1. A pixel, comprising:
an organic light emitting diode (OLED) with a first electrode coupled to a second power source; a first transistor with a first electrode coupled to a data line, and with a second electrode coupled to a first node, the first transistor being turned on when a scan signal is supplied to a scan line; a first capacitor coupled between the first node and a third power source, the first capacitor to charge a first capacitor voltage corresponding to a data signal supplied from the data line; and a pixel circuit including: a second capacitor coupled between a second node and a first power source, the second capacitor to charge a second capacitor voltage according to the first capacitor voltage charged in the first capacitor; a second transistor to drive the OLED to flow current corresponding to the second capacitor voltage charged in the second capacitor through the OLED, the second transistor coupled between the first power source and a second electrode of the OLED and having a gate electrode connected to the second node; and a third transistor coupled between the first node and the second node, wherein when the first capacitor voltage corresponding to the data signal is charged in the first capacitor, the first transistor is turned on such that the data line is electrically connected to the first node and the third transistor is turned off such that the second node is electrically disconnected from the first node.