Method of Making Double-sided Wavelength Converter and Light Generating Device Using Same
Assignee3M Innovative Properties Company
InventorsTommie W. Kelley, Andrew J. Ouderkirk, Catherine A. Leatherdale
Life of this patent
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Abstract
A method of forming a light conversion element includes providing a semiconductor construction having a first photoluminescent element epitaxially grown together with a second photoluminescent element. A first region is etched in the first photoluminescent element from a first side of the semiconductor construction and a second region is etched in the second photoluminescent element from a second side of the semiconductor construction. In some embodiments the wavelength converter is attached to an electroluminescent element, such as a light emitting diode (LED).
Claims14
A method of forming a light conversion element, comprising:
- providing a semiconductor construction having a first photoluminescent element epitaxially grown together with a second photoluminescent element;
- etching a first region in the first photoluminescent element from a first side of the semiconductor construction;
- and
- etching a second region in the second photoluminescent element from a second side of the semiconductor construction.
3-8. (canceled)
(canceled)
A method of forming a multiwavelength light emitting diode (LED), comprising:
- etching a first pattern on a first side of a wavelength converter;
- etching a second pattern on a second side of the wavelength converter;
- and
- attaching the wavelength converter to an LED.
13-18. (canceled)
A method of forming a semiconductor device, comprising:
- attaching a wavelength converter element to an electroluminescent device, the wavelength converter element comprising a stack of semiconductor layers, the stack of semiconductor layers comprising a first photoluminescent element and a window layer;
- substantially covering a first region of the electroluminescent element with a first portion of the window layer of the wavelength converter;
- and
- substantially covering a second region of the electroluminescent device, but not the first region of the electroluminescent device, with at least a portion of the first photoluminescent element of the wavelength converter.
22-24. (canceled)
26-28. (canceled)
Dependencies are inferred from the claim text.