OLED light panel with controlled brightness variation

A first device comprising:

• a substrate;
• a plurality of OLEDs disposed on the substrate;
• wherein each OLED further comprises:
• a first electrode;
• a second electrode;
• and
• an organic electroluminescent (EL) material disposed between the first and the second electrodes;
• wherein each of the plurality of OLEDs is commonly addressable;
• wherein the plurality of OLEDs comprises a first group and a second group;
• wherein each of the OLEDs in the first group of the plurality of OLEDs is patterned and electrically connected such that each OLED in the first group is driven at a first current density;
• wherein each of the OLEDs in the second group of the plurality of OLEDs is patterned and electrically connected such that each OLED in the second group is driven at a second current density that is different from the first current density;
• wherein at least one of the OLEDs in the first group of the plurality of OLEDs emits light having a first point on the CIE 1976 (L*, u*, v*) color space chromaticity diagram;
• wherein at least one of the OLEDs in the second group of the plurality of OLEDS emits light having a second point on the CIE 1976 (L*, u*, v*) color space chromaticity diagram;
• and
• wherein the difference between the first point and the second point has a duv value that is less than approximately 0.10.