Back to results
US 2020/0006708 A1Published application
Enhanced oled outcoupling by suppressing surface plasmon modes
AssigneeThe Regents of the University of Michigan
InventorsStephen R. FORREST, Yue QU
Life of this patent
Estimating the term…
Abstract
A number of new solutions for enhancing the extraction of waveguided mode and suppressing surface plasmon polariton mode in OLEDs are disclosed.
Claims13
A organic light emitting device (OLED), comprising:
- a transparent substrate having a first side and a second side;
- an emissive region disposed over the first side of the transparent substrate, the emissive region comprising:
- a transparent first electrode disposed over the transparent substrate;
- at least one organic emissive layer disposed over the transparent first electrode;
- and
- a transparent second electrode disposed over the at least one organic emissive layer;
- an optical grating layer having a grating structure having a sub-wavelength periodicity disposed on the transparent second electrode;
- and
- a reflective layer disposed over the optical grating layer.
6 more elements
A organic light emitting device (OLED), comprising:
- a substrate having a first side and a second side;
- a reflective layer disposed over the first side of the substrate;
- a grid layer consisting of two optically transparent materials with different refractive indices disposed on the reflective layer,
- a transparent first electrode provided over the grid layer,
- an organic emissive layer provided over the transparent bottom electrode;
- and
- a transparent second electrode provided over the organic emissive layer, wherein the grid layer scatters trapped waveguided modes from the organic emissive layer.
4 more elements
Dependencies are inferred from the claim text.