Lumileds LLC

Guan Huang

Rene P Helbing

Wouter Anthon Soer

Light modules and methods of forming light modules are disclosed. A light module includes a first plurality and a second plurality of light emitting elements configured to emit, respectively, a first light and a second light, and both arranged on a substrate. An encapsulation layer is disposed over the first and second plurality of the light emitting elements, and a wavelength converting element is dispersed in the encapsulation layer. A concentration of the wavelength converting element in the encapsulation layer varies, is larger over the first plurality of light emitting elements and is smaller over the second plurality of light emitting elements.

Hybrid chip-on-board LED module with patterned encapsulation

Different wavelength conversion materials, or different concentrations of a wavelength conversion material are used to encapsulate the light emitting elements of different colors of a hybrid light emitting module. In an embodiment of this invention, the light emitting elements of a particular color are encapsulated with a transparent encapsulant, while the light emitting elements of a different color are encapsulated with a wavelength conversion encapsulant. In another embodiment of this invention, a particular set of light emitting elements of different colors is encapsulated with a different encapsulant than another set of light emitting elements.

Different wavelength conversion materials, or different concentrations of a wavelength conversion material are used to encapsulate the light emitting elements of different colors of a hybrid light emitting module. In an embodiment of this invention, second light emitting elements () of a particular color are encapsulated with a transparent second encapsulant (), while first light emitting elements () of a different color are encapsulated with a wavelength conversion first encapsulant (). In another embodiment of this invention, a particular second set of second and third light emitting elements () of different colors is encapsulated with a different encapsulant than another first set of first light emitting elements ().

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Santa Clara, CA, United States of America

Guan Huang