Patent ID: 11925058
Assignee: AVALON HOLOGRAPHICS INC.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 0:
1. A method for fabrication of a multi-colored microcavity organic light emitting diode (MCOLED) array, the method comprising:
patterning a bottom first series of electrodes on a substrate;
depositing a first filler layer selected for a first color on top of a first group of electrodes in the series of electrodes;
depositing a second filler layer selected for a second color on top of a second group of electrodes in the bottom first series of electrodes;
depositing an intermediate series of electrodes on the first filler layer and the second filler layer, each electrode in the intermediate series of electrodes comprising an overhang region and a connecting area, the connecting area electrically connecting each electrode in the intermediate series of electrodes to an electrode in the bottom first series of electrodes;
depositing a organic light emitting diode stack on the intermediate series of electrodes;
depositing a top series of electrodes on the organic light emitting diode stack; and
depositing a distributed Bragg reflector (DBR) on top of the top series of electrodes, the DBR comprising alternate layers of dielectric materials and forming an optical microcavity with a resonance wavelength between the intermediate series of electrodes and the DBR, the DBR having a high reflectivity with dielectric layer thicknesses chosen such that the optical path length of each layer in the DBR is one quarter of the resonance wavelength of the optical microcavity.