公开(公告)号：US10472735B2

公开(公告)日：2019-11-12

申请号：US15572486

申请日：2016-04-28

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： John Kelso ,  Alan Piquette ,  David Johnston

IPC: H01L33/50 ,  C30B29/28 ,  C04B35/44 ,  C04B35/64 ,  C09K11/77 ,  C30B1/02 ,  C30B29/34 ,  C30B29/38 ,  C30B29/40 ,  C04B35/16 ,  C04B35/581 ,  C04B35/584 ,  C04B35/587 ,  C04B35/597

Abstract: 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.

公开(公告)号：US20190352561A1

公开(公告)日：2019-11-21

申请号：US15981707

申请日：2018-05-16

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Maxim N. Tchoul ,  Gertrud Kräuter

IPC: C09K11/02 ,  H01L33/50 ,  H01L33/56 ,  C08G77/18 ,  C08G77/06 ,  C08K3/36 ,  B32B27/08 ,  B32B27/28 ,  B32B38/00

Abstract: 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.

公开(公告)号：US11349051B2

公开(公告)日：2022-05-31

申请号：US16409500

申请日：2019-05-10

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Maxim N. Tchoul ,  Mary Ann Johnson ,  Gertrud Kräuter

IPC: H01L33/56 ,  C09D183/04 ,  H01L33/48 ,  H01L33/50 ,  H01L33/60 ,  H01L33/62 ,  H01L33/64

Abstract: 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.

公开(公告)号：US20210253945A1

公开(公告)日：2021-08-19

申请号：US16791941

申请日：2020-02-14

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Maxim N. Tchoul ,  David W. Johnston ,  Gertrud Kraeuter

IPC: C09K11/02 ,  C08G77/18 ,  C08K3/013 ,  H01L33/50

Abstract: 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.

公开(公告)号：US10923634B2

公开(公告)日：2021-02-16

申请号：US16313974

申请日：2017-06-30

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Gertrud Kräuter ,  Matthias Loster

IPC: H01L33/50 ,  C09K11/02

Abstract: 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.

公开(公告)号：US20190259919A1

公开(公告)日：2019-08-22

申请号：US15932366

申请日：2018-02-16

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Adam Scotch ,  Maxim N. Tchoul ,  Gertrud Kraeuter

IPC: H01L33/50

Abstract: 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 μm.

公开(公告)号：US20190172982A1

公开(公告)日：2019-06-06

申请号：US16313974

申请日：2017-06-30

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Gertrud Kräuter ,  Matthias Loster

IPC: H01L33/50 ,  C09K11/02

Abstract: 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.

公开(公告)号：US11584882B2

公开(公告)日：2023-02-21

申请号：US16791941

申请日：2020-02-14

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Maxim N. Tchoul ,  David W. Johnston ,  Gertrud Kraeuter

IPC: C09K11/02 ,  C08K3/013 ,  C08G77/18 ,  H01L33/50

Abstract: 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.

公开(公告)号：US11552228B2

公开(公告)日：2023-01-10

申请号：US16104743

申请日：2018-08-17

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Maxim N. Tchoul ,  Darshan Kundaliya ,  Adam Scotch ,  Gertrud Kräuter

IPC: H01L33/50 ,  H01L33/56

Abstract: 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 ≤30 μm.

公开(公告)号：US20210189231A1

公开(公告)日：2021-06-24

申请号：US17054473

申请日：2019-04-15

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Alan Piquette ,  Maxim N. Tchoul ,  Gertrud Kräuter

IPC: C09K11/02 ,  B32B27/08 ,  B32B27/28 ,  B32B38/00 ,  C08G77/06 ,  C08G77/18 ,  C08K3/36 ,  H01L33/50 ,  H01L33/56

Abstract: A method for producing a converter element, a converter element and a light emitting device are disclosed. In an embodiment a converter element includes a cured layer having at least one phosphor and a cured polysiloxane powder, wherein the phosphor and the cured polysiloxane powder are embedded in a matrix material comprising a cured polysiloxane resin.