Back to results
US 10,062,738 B2Granted
Devices combining thin film inorganic LEDs with organic LEDs and fabrication thereof
AssigneeThe Regents of the University of Michigan
InventorsStephen R. Forrest, Kyusang Lee
Life of this patent
Estimating the term…
Abstract
Devices including organic and inorganic LEDs are provided. Techniques for fabricating the devices include fabricating an inorganic LED on a parent substrate and transferring the LED to a host substrate via a non-destructive ELO process. Scaling techniques are also provided, in which an elastomeric substrate is deformed to achieve a desired display size.
Claims17
A device comprising:
- a first plurality of pixels, wherein each pixel of the first plurality of pixels comprises:
- an inorganic first light-emitting diode (LED) disposed over a substrate;
- an organic second LED (OLED) disposed over the substrate and adjacent to the first inorganic LED:
- and
- a third LED disposed over the substrate and adjacent to the first LED or the second LED;
- wherein each of the first, the second, and the third LEDs is individually addressable as a subpixel within the each pixel of the first plurality of pixels.
3 more elements
A method comprising:
- depositing an epitaxial protective layer over an epitaxial substrate;
- depositing an epitaxial sacrificial layer over the epitaxial protective layer;
- depositing a plurality of emissive stacks over the epitaxial sacrificial layer;
- cold-welding the emissive stack to a flexible substrate;
- separating the epitaxial protective layer from the emissive stack:
- applying one or more layers to each stack of the plurality of emissive stacks to form a first plurality of LEDs;
- transferring a first portion of the first plurality of LEDs to a first host substrate;
- and
- fabricating a second plurality of LEDs on the first host substrate.
6 more elements
Dependencies are inferred from the claim text.