Color control by alteration of wavelenght converting element
AssigneeKoninklijke Philips Electronics N.V.
InventorsSTEVEN PAOLINI, MICHAEL D. CAMRAS, OSCAR ARTURO CHAO PUJOL, FRANK M. STERANKA, JOHN E. EPLER
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Abstract
A light emitting device is produced by depositing a layer of wavelength converting material over the light emitting device, testing the device to determine the wavelength spectrum produced and correcting the wavelength converting member to produce the desired wavelength spectrum. The wavelength converting member may be corrected by reducing or increasing the amount of wavelength converting material. In one embodiment, the amount of wavelength converting material in the wavelength converting member is reduced, e.g., through laser ablation or etching, to produce the desired wavelength spectrum.
Claims15
1-34. (canceled)
A method for fabricating a light emitting diode (LED) device comprising:
- providing an LED die on a support substrate;
- providing an optical element affixed over the LED die;
- and
- depositing a wavelength converting material as a layer over the optical element.
Dependencies are inferred from the claim text.