Pixel and organic light emitting diode display having a bypass transistor for passing a portion of a driving current

摘要

A pixel and an organic light emitting diode (OLED) display using the pixel are disclosed. The pixel includes a driving transistor for transmitting a driving current, an organic light emitting diode (OLED) receiving a first portion of the driving current, and a bypass transistor receiving a second portion of the driving current.

主权项

1. A pixel comprising:
a pixel driver including a driving transistor that transmits a driving current corresponding to a data voltage caused by a data signal transmitted from a corresponding data line according to a scan signal transmitted from a corresponding scan line; an organic light emitting diode (OLED) to which a first portion of the driving current flows; and a bypass transistor including an electrode coupled to a variable power source to which a second portion of the driving current flows, wherein a light emitting period during which the first portion flows to the organic light emitting diode (OLED) includes an off period during which the bypass transistor is turned off, and wherein, during a black luminance condition for emitting light having a minimum luminance from the organic light emitting diode (OLED), the variable power source is controlled so that the second portion of the driving current flows via the turned off bypass transistor.