Patent ID: 7132788

Claim:
An organic light emitting diode (OLED) device with at least one pixel, comprising: a lower electrode layer; a photo-resist layer, said photo-resist layer fabricated upon said lower electrode layer, said photo-resist layer patterned into a plurality of mushroom banks to define at least one pocket upon said lower electrode layer, the mushroom banks having a lower portion and an upper portion, where the lower portion is closer to the lower electrode layer than the upper portion and at least part of the upper portion is wider than at least part of the lower portion, the pocket completely surrounding and defining an active region of the pixel, so that the pixel is surrounded by the mushroom banks on all sides; a plurality of polymer layers in the pocket; and an upper electrode layer patterned above said polymer layers, said upper and lower electrode layers capable of conducting electrical energy to said polymer layers to cause at least one of said polymer layers to emit light.