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US 2009/0153029 A1Published application
Light emitting diodes, including high-efficiency outcoupling oled utilizing two-dimensional grating
OwnerViktor B. Khalfininventor
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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.
Claims33
An apparatus comprising:
- a light emitting diode (LED) including:
- an emissive layer capable of emitting light,
- a substrate having a diffraction grating, wherein the substrate's diffraction grating is capable of at least in part directing the scattering of light emitted by the emissive layer, and
- a layer of metal strips disposed along the ridges of the substrate diffraction grating.
1 more element
A system comprising:
- a display capable of displaying a user interface, and
- including at least one light emitting diode (LED) having:
- a substrate having a diffraction grating, wherein the substrate's diffraction grating is capable of at least in part directing the scattering of light emitted by an emissive layer, and
- a layer of metal strips disposed substantially along the ridges of the substrate diffraction grating.
1 more element
An apparatus comprising:
- an emissive means for emitting light,
- a diffraction means for directing the scattering of light emitted by the emissive means, and
- an outcoupling means for outcoupling of transverse-electric (TE) waveguide modes.
Dependencies are inferred from the claim text.