Method and drive means for color correction in an organic electroluminescent device

Abstract

This invention relates to a method for color correction in an organic electroluminescent device (), having at least one pixel (), comprising an electro-luminescent material layer (), which is sandwiched between a first and a second electrode (), and constituting at least a first and a second light-emitting element (R,G), wherein said method comprises the steps of: inputting a data signal (S) comprising information to be displayed by said light-emitting elements (R,G), generating, in a correction means (), a correction factor for each light-emitting element (R,G), said correction factor being based on a relationship between a color point wavelength shift (Δλ) and a measured shift in one of a voltage across at least one of said light-emitting elements (R,G) at a predetermined current (I) and a current through at least one of said light-emitting elements (R,G), at a predetermined voltage (V), applying said correction factor on said data signal (S), and supplying the corrected data signal (S) to the light-emitting elements (R,G). The invention also relates to a drive means implementing the above-described method.