Thin film wavelength converters and methods for making the same
AssigneeOsram Sylvania Inc.
InventorsDarshan Kundaliya, Kailash Mishra
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Abstract
Thin film wavelength converters and methods for making the same are disclosed. In some embodiments, the thin film converters include a first thin film layer of first wavelength conversion material, a conductive layer, and a second thin film layer of a second wavelength conversion material. In one embodiment, a photoresist mask is applied to the conductive layer to form a pattern of by which the second wavelength conversion material may be applied by electrophoretic deposition to the exposed regions of the surface of the conductive layer.
Claims9
1-9. (canceled)
A method of forming a thin film wavelength converter, comprising:
- depositing a first thin film layer of at least one first wavelength conversion material on a substrate using a first deposition process;
- depositing an electrically conductive layer using a second deposition process;
- and
- depositing a second thin film layer of at least one second wavelength conversion material on said electrically conductive layer using an electrophoretic deposition process;
- wherein:
- said first thin film layer is configured to convert incident primary light from a light source in a first wavelength range to secondary light in a second wavelength range, the first thin film layer having a thickness ranging from about 10 nanometers (nm) to about 20 micrometers (μm);
- and
- said second thin film layer is configured to convert at least one of said primary light and said secondary light to tertiary light in a third wavelength range, said second wavelength range being different from said third wavelength range.
Dependencies are inferred from the claim text.