Patent ID: 8466484
Filing Date: 2013-06-18
Classification: H01L

Abstract:
1. A method of forming a microcavity for an organic light-emitting device, the method comprising: applying a liquid ink to a transfer surface, the liquid ink defined by a carrier fluid and dissolved or suspended film-forming organic material for forming a layer of an organic light-emitting device; energizing the transfer surface to substantially evaporate the carrier fluid and form a dry film organic material on the transfer surface; transferring the dry film organic material from the transfer surface to a substrate such that the dry film organic material is deposited on the substrate in substantially a solid phase, to form a first organic buffer layer, the substrate comprising a first reflective electrode, and the dry film organic material being deposited to build up a layer thickness at a rate of from about 0.1 nm/sec to about 500 nm/sec; depositing a light-emitting organic material over the first organic buffer layer to form an emitting layer such that the first organic buffer layer is between the substrate and the emitting layer, the light-emitting organic material emitting light, upon excitation, at a peak emission wavelength; and depositing a second reflective electrode over the emitting layer such that the emitting layer is between the first reflective electrode and the second reflective electrode, to form an OLED microcavity; wherein at least one of the first and second reflective electrodes is semi-transparent, the first reflective electrode and the second reflective electrode are separated from one another by a distance, the distance corresponds to a depth of the microcavity, and the depth of the microcavity is configured for resonance emission of the peak emission wavelength.