Organic light emitting diode display device with reference voltage lines and method of operation in an organic light emitting diode display device

摘要

An OLED display device that includes multiple reference voltage lines. One reference voltage line provides a reference voltage to red, green and blue sub-pixels. Another reference voltage line provides a different reference voltage to white sub-pixels. The reference voltages can be controlled independently of each other to control brightness of the display device.

主权项

1. An organic light emitting diode display device comprising:
a plurality of first sub-pixels, the plurality of first sub-pixels having first light emitting elements emitting first color light and first driving transistors to drive current through the first light emitting elements; a first reference voltage line to provide a first reference voltage to source electrodes of the first driving transistors; a plurality of second sub-pixels, the plurality of second sub-pixels having second light emitting elements emitting second color light and second driving transistors to drive current through the second light emitting elements; a plurality of third sub-pixels, the plurality of third sub-pixels having third light emitting elements emitting third color light and third driving transistors to drive current through the third light emitting elements; a plurality of fourth sub-pixels, the plurality of fourth sub-pixels having fourth light emitting elements emitting fourth color light and fourth driving transistors to drive current through the fourth light emitting elements; and a second reference voltage line to provide a second reference voltage to source electrodes of the second driving transistors, to source electrodes of the third driving transistors, and source electrodes of the fourth driving transistors.