Backplane structures for organic light emitting electronic devices using a TFT substrate

An organic electronic device comprising:

• a backplane comprising:
• a TFT substrate;
• an insulating layer over the TFT substrate;
• a multiplicity of first openings in the insulating layer having a depth d1;
• a multiplicity of second openings in the insulating layer having a depth d2;
• a multiplicity of third openings in the insulating layer having a depth d3;
• a multiplicity of pixelated diode electrode structures, wherein a first set of diode electrode structures are in the first openings, wherein a second set of diode electrode structures are in the second openings, wherein a third set of diode electrode structures are in the third openings, and the first set of diode electrode structures is less than the total number of diode electrode structures;
• a bank structure defining pixel areas over the diode electrode structures;
• wherein the first openings and first set of diode electrode structures are in at least a first set of the pixel areas, and the second openings are in a second set of pixel areas and the third openings are in a third set of pixel areas;
• and
• a first photoactive layer comprising a first photoactive material over the first set of diode electrode structures in the first openings in the first pixel areas and a second photoactive layer comprising a second photoactive material in the second openings in the second pixel areas, and a third photoactive layer comprising a third photoactive material in the third openings in the third pixel areas, wherein d1, d2, and d3 are all different.