Osram Opto Semiconductors Gmbh

Osram Sylvania Inc.

Osram Oled Gmbh

Alan Piquette

Maxim N Tchoul

Gertrud Kräuter

Adam Scotch

Gertrud Kraeuter

Matthias Loster

Darshan Kundaliya

David W Johnston

John F Kelso

Madis Raukas

Yi Zheng

Kathy Schmidtke

Thomas Dreeben

Nathan M Zink

Mary Ann Johnson

Madis Raukus

John Nappi

The present invention is directed to a wavelength converter comprising a non-luminescent substrate layer, at least one polysiloxane layer, wherein at least one of the polysiloxane layers comprises a phosphor material. Furthermore, the present invention is directed to a method for preparing a wavelength converter, a light emitting device and a method for preparing a light emitting device.

Wavelength converter; method of its making and light-emitting device incorporating the element

An optoelectronic component and a method for producing an optoelectronic component are disclosed. In an embodiment an optoelectronic component includes a semiconductor chip including a plurality of pixels, each pixel configured to emit electromagnetic primary radiation from a radiation exit surface and conversion layers located on at least a part of the radiation exit surfaces, wherein the conversion layers comprise a crosslinked matrix having a three-dimensional siloxane-based network and at least one phosphor embedded in the matrix, and wherein the conversion layers have a thickness of &#x2264;30 &#x3bc;m.

Optoelectronic component and method for producing an optoelectronic component

The invention relates to a method for producing a conversion element for an optoelectronic component comprising the steps of: A) Producing a first layer, for that purpose: A1) Providing a polysiloxane precursor material, which is liquid, A2) Mixing a phosphor to the polysiloxane precursor material, wherein the phosphor is suitable for conversion of radiation, A3) Curing the arrangement produced under step A2) to produce a first layer having a phosphor mixed in a cured polysiloxane material, which comprises a three-dimensional crosslinking network based primarily on T-units, where the ratio of T-units to all units is greater than 80%, B) Producing a phosphor-free second layer, for that purpose: B1) Providing the polysiloxane precursor material, which is liquid, B2) Mixing a filler to the polysiloxane precursor material, wherein the filler is in a cured and powdered form, wherein the filler has a refractive index, which is equal to the refractive index of the cured polysiloxane material, B3) Curing the arrangement produced under step B2) to produce a second layer having a filler mixed in the cured polysiloxane material, which comprises a three-dimensional crosslinking network based primarily on T-units, wherein the produced conversion element is formed as a plate having a thickness of at least 100 &#x3bc;m.

Methods for producing a conversion element and an optoelectronic component

An optoelectronic device and a method of producing an optoelectronic device are disclosed. In an embodiment an optoelectronic device includes components including an active layer stack, a housing and electrical contacts and at least one protective layer on a surface of at least one of the components, wherein the at least one protective layer includes a cross-linked material with a three-dimensional polysiloxane-based network.

Optoelectronic device and method of producing an optoelectronic device

A method of making a wavelength converter includes (a) combining a luminescent material and inorganic nanoparticles with a liquid methoxy methyl polysiloxane precursor to form a liquid dispersion, the precursor having a methoxy content of 10 to 50 weight percent (wt %), the inorganic nanoparticles including at least 10 weight percent of the dispersion; (b) applying the liquid dispersion to a non-stick surface; (c) curing the liquid dispersion to form a filled polymer sheet; and (d) cutting the sheet to form individual wavelength converters having a desired shape.

Wavelength converter having a polysiloxane material, method of making, and solid state lighting device containing same

An optoelectronic component and a method for producing an optoelectronic component are disclosed. In an embodiment a method for producing an optoelectronic component includes providing a semiconductor capable of emitting primary radiation, providing an alkoxy-functionalized polyorganosiloxane resin and crosslinking the alkoxy-functionalized polyorganosiloxane resin to form a three-dimensionally crosslinked polyorganosiloxane, wherein an organic portion of the three-dimensionally crosslinked polyorganosiloxane is up to 25 wt %.

Method for producing an optoelectronic component, and optoelectronic component

An optoelectronic component includes a semiconductor chip that is able to emit radiation having a wavelength of 400 nm to 490 nm, a conversion element including a reactive polysiloxane matrix material, a wavelength converting phosphor and filler nanoparticles, wherein the filler nanoparticles have a diameter of smaller than 15 nm and modify the refractive index and yield a mixture when added to the reactive polysiloxane matrix material.

Optoelectronic component having a conversation element with a high refractive index

A method for producing a converter element, a converter element and a light emitting device are disclosed. In an embodiment a method for producing a converter element providing at least one phosphor and a liquid polysiloxane resin and preparing a cured polysiloxane powder from a first fraction of the liquid polysiloxane resin. The method further includes preparing a mixture including the at least one phosphor, the cured polysiloxane powder and a second fraction of the liquid polysiloxane resin, casting and curing the mixture to a cured layer and singulating the cured layer.

Method for producing a converter element, converter element and light emitting device

A wavelength conversion element comprising a crosslinked matrix and at least one phosphor dispersed in said matrix, wherein said matrix is made from a precursor material comprising a precursor having a structure chosen from one of the generic formulae is provided. Further, a light emitting device comprising a wavelength conversion element and a method for producing a wavelength conversion element are provided.

Wavelength conversion element, light emitting device and method for producing a wavelength conversion element

There is herein described a method of making a single crystal wavelength conversion element from a polycrystalline wavelength conversion element, a single crystal wavelength conversion element, and a light source containing same. By making the single crystal wavelength conversion element from a polycrystalline wavelength conversion element, the method provides greater flexibility in creating single crystal wavelength conversion elements as compared to melt grown methods for forming single crystals. Advantages may include higher activator contents, forming more complex shapes without machining, providing a wider range of possible activator gradients and higher growth rates at lower temperatures.

Method of making a single crystal wavelength conversion element, single crystal wavelength conversion element, and light source containing same

A method is described for etching ceramic phosphor converters. The method includes contacting a surface of the converter with a solution of phosphor acid for a time sufficient to etch the converter. The method is applicable to ceramic phosphor converters comprising a phosphor having a general formula MAlO:RE wherein M is a metal and RE is a rare earth element.

Method for etching a ceramic phosphor converter

A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes multiple layers of microlenses deposited thereon. The microlenses may have an index of refraction different from an index of refraction of the wavelength-converting plate.

LED wavelength-coverting plate with microlenses in multiple layers

A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes microlenses deposited thereon. The microlenses may have an index of refraction different from the index of refraction of the wavelength-converting plate. The microlenses on the top surface of the plate increase lumen output in a direction normal to the top surface of a wavelength-converting plate.

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Peabody, MA, United States of America

Alan Piquette