Laser thermal transfer gap control for oled manufacturing

摘要

A method for depositing onto a substrate an organic emitter layer in the process of making an OLED device, includes providing a donor element coated with the organic emitter layer having an organic emitter having a desired emission spectrum and which when subject to heat transfers to the substrate; positioning the coated side of the donor element in a material transferring relationship at a predetermined distance relative to the substrate to deposit the emitter layer in an environment of reduced pressure, the predetermined distance being selected so that the spectrum of light emitted from the OLED device will be in the desired emission spectrum; and heating the donor element to cause the transferable layer to transfer to form the emitter layer on the organic light-emitting device.