公开(公告)号：US20200027931A1

公开(公告)日：2020-01-23

申请号：US16585232

申请日：2019-09-27

Applicant: Universal Display Corporation

Inventor： Michael HACK ,  Mark E. THOMPSON ,  Eric A. MARGULIES ,  Nicholas J. THOMPSON ,  Michael Stuart WEAVER

IPC: H01L27/32 ,  H01L51/50

Abstract: Embodiments of the disclosed subject matter provide a wearable device that includes an organic light emitting diode (OLED) light source to output light having one peak wavelength from a single OLED emissive layer, and a first barrier layer that is disposed over or between the single OLED emissive layer and one or more down-conversion layers. One or more regions of the single OLED emissive layer are independently switchable and controllable so that the wearable device is configurable to output a plurality of wavelengths of light. One of the plurality of wavelengths of light that is output is near infrared light.