Back to results
US 2009/0152533 A1Published application
Increasing the external efficiency of light emitting diodes
OwnerWinston Kong Chan, Viktor B. Khalfininventors
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to increasing the external efficiency of light emitting diodes, and specifically to increasing the outcoupling of light from an organic light emitting diode utilizing a diffraction grating.
Claims29
An apparatus comprising:
- a light emitting diode (LED) including:
- an emissive layer capable of emitting light, and
- a substrate having a diffraction grating, wherein the substrate's diffraction grating is capable of at least in part directing a scattering of light emitted by the emissive layer.
A system comprising:
- an operating system capable of facilitating the use of the system, and generating a user interface;
- a processor capable of running the operating system;
- and
- a display capable of displaying the user interface, and including at least one light emitting diode (LED) having:
- an emissive layer capable of emitting light, and
- a substrate having a first diffraction grating component, wherein the substrate's diffraction grating is capable of at least in part directing the scattering of light emitted by the emissive layer.
3 more elements
A method of making a light emitting diode (LED) comprising:
- forming a first diffraction grating on a substrate, wherein the first diffraction grating is capable of at least in part directing the scattering of light emitted by an emissive layer;
- and
- applying a plurality of layers to the substrate,
- wherein one of the plurality of layers includes the emissive layer which is capable of emitting light, and
- wherein one of the plurality of layers includes an anode having a second diffraction grating derived, at least in part, from the substrate's first diffractive grating and wherein the anode's second diffraction grating is capable of at least in part directing the scattering of light emitted by the emissive layer.
2 more elements
A light emitting diode (LED) comprising:
- an emissive means for emitting light,
- a first diffraction means for directing the scattering of light emitted by the emissive means, and
- a second diffraction means for directing the scattering of light emitted by the emissive means, wherein said second diffraction means is derived, at least in part, from said first diffraction means, and wherein the second diffraction means is disposed substantially between said emissive means and said first diffraction means.
Dependencies are inferred from the claim text.