Lumileds LLC

Koninklijke Philips Corporation N.v.

Erik Maria Roeling

Danielle Russell Chamberlin

Daniel Bernardo Roitman

Hans-Helmut Bechtel

Kentaro Shimizu

Sumit Gangwal

Peter Josef Schmidt

Oleg Borisovich Shchekin

Jens Meyer

Andreas Tücks

Niek Van Leth

Matthias Heidemann

Thomas Diederich

Marinus Johannes Petrus Maria Van Gerwen

Gregoire Denis

A method includes depositing a layer comprising a photoinitiator and a curable material onto a surface and applying a nanoimprint mold on the layer of curable material to form a mesh comprising intersecting walls defining cavities. After applying the nanoimprint mold, the mesh is illuminated with light causing decarboxylation of the photoinitiator to initiate curing of the curable material. After curing the curable material, the nanoimprint mold is removed and a wavelength converting material is deposited in the cavities to form an array of wavelength converting pixels.

Wavelength converting layer patterning for LED arrays

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.

Converter fill for LED array

The invention provides a method for providing a luminescent particle with a hybrid coating, the method comprising: (i) providing a luminescent core comprising a primer layer on the luminescent core; (ii) providing a main ALD coating layer onto the primer layer by application of a main atomic layer deposition process, the main ALD coating layer comprising a multilayer with two or more layers having different chemical compositions, and wherein in the main atomic layer deposition process a metal oxide precursor is selected from a group of metal oxide precursors comprising Al, Zn, Hf, Ta, Zr, Ti, Sn, Nb, Y, Ga, and V; (iii) providing a main sol-gel coating layer onto the main ALD-coating layer by application of a main sol-gel coating process, the main sol-gel coating layer having a chemical composition different from one or more of the layers of the multilayer.

Phosphor particle coating

The invention provides a method for providing a luminescent particle () with a hybrid coating, the method comprising: (i) providing a luminescent core () comprising a primer layer () on the luminescent core (); (ii) providing a main ALD coating layer () onto the primer layer () by application of a main atomic layer deposition process, the main ALD coating layer () comprising a multilayer () with two or more layers () having different chemical compositions, and wherein in the main atomic layer deposition process a metal oxide precursor is selected from a group of metal oxide precursors comprising Al, Zn, Hf, Ta, Zr, Ti, Sn, Nb, Y, Ga, and V; (iii) providing a main sol-gel coating layer () onto the main ALD-coating layer () by application of a main sol-gel coating process, the main sol-gel coating layer () having a chemical composition different from one or more of the layers () of the multilayer ().

A method includes depositing a layer comprising a photoinitiator and a curable material onto a surface and applying a nanoimprint mold on the layer of curable material to form a mesh comprising intersecting walls defining cavities. After applying the nanoimprint mold, the mesh is illuminated with light causing decarboxylation of the photoinitator to initiate curing of the curable material. After curing the curable material, the nanoimprint mold is removed and a wavelength converting material is deposited in the cavities to form an array of wavelength converting pixels.

A light emitting diode (LED) device may include an LED die having a first surface on a substrate. A first phosphor layer may be formed on a second surface and sides of the LED die. The second surface may be opposite the first surface. A second phosphor layer may be formed on the first phosphor layer. The second phosphor layer may have a peak emission wavelength (L2) located between a peak emission wavelength of the LED die (LD) and a peak emission wavelength of the first phosphor layer (L2).

Phosphor converted LED with high color quality

A light emitting device comprises an LED emitting ultraviolet or blue light and one or more phosphors excited by the ultraviolet or blue light and in response emitting longer wavelength light to provide a combined phosphor emission spectrum having an emission peak at wavelength &#x3bb;with a full width at half maximum of FWHM. With &#x3bb;and FWHM expressed in nm, 525 nm&#x2265;&#x3bb;&#x2265;0.039*FWHM+492.7 nm. The light emitting device may be used, for example, to signal the autonomous driving state of an automobile.

Cyan phosphor-converted LED module

A light-emitting diode or device (LED) package includes a substrate, a white LED above the substrate, and a violet LED or laser above a wavelength converter of the white LED or laterally offset from the wavelength converter.

High luminance crisp white LED light source

A wavelength converting layer is disclosed that includes a plurality of phosphor grains 50-500 nm in size and encapsulated in cerium free YAG shells and a binder material binding the plurality of phosphor grains, the wavelength converting layer having a thickness of 5-20 microns attached to the light emitting surface.

The invention provides an LED package configured to generate blue LED package light, wherein the LED package comprises a solid state light source configured to generate blue light source light, a luminescent material configured to convert part of the light source light into luminescent material light comprising green light, and a blue pigment configured to absorb part of the luminescent material light.

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Son, Netherlands

Erik Maria Roeling