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US 2020/0403128 A1Published application
Converter fill for led array
AssigneeLumileds LLC
InventorsDanielle Russell CHAMBERLIN, Erik Maria ROELING, Sumit GANGWAL, Niek VAN LETH, Oleg SHCHEKIN
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Abstract
An optical isolation material may be applied to walls of a first cavity and a second cavity in a wafer mesh. A wavelength converting layer may be deposited into the first cavity to create a first segment and into the second cavity to create a second segment. The first segment may be attached to a first light emitting device to create a first pixel and the second segment to a second light emitting device to create a second pixel. The wafer mesh may be removed.
Claims20
A method comprising:
- providing a bi-layer wavelength converting layer comprising a phosphor layer and an optical material layer;
- cutting the bi-layer wavelength converting layer to create gaps in the bi-layer wavelength converting layer such that the bi-layer wavelength converting layer forms a plurality of elements in an array pattern;
- inserting a wafer mesh having an array of cavities separated by intersecting cavity walls into the gaps to form a wafer mesh containing a plurality of bi-layer wavelength converting layer elements;
- providing an array of semiconductor light emitting devices (LED array) having a plurality of light emitting devices;
- aligning the wafer mesh with the LED array so that each light emitting device of the LED array is aligned with a bi-layer wavelength converting layer element of the wafer mesh;
- and
- after aligning the wafer mesh with the LED array, attaching each of the light emitting devices to an aligned bi-layer wavelength converting layer element.
4 more elements
A method comprising:
- providing a bi-layer wavelength converting layer comprising a phosphor layer and an optical material layer;
- cutting the bi-layer wavelength converting layer to create gaps in the bi-layer wavelength converting layer such that the bi-layer wavelength converting layer forms a plurality of elements in an array pattern;
- inserting a wafer mesh having an array of cavities separated by intersecting cavity walls into the gaps to form a wafer mesh containing a plurality of bi-layer wavelength converting layer elements.
Dependencies are inferred from the claim text.