Maxim N Tchoul

US Patent:

20200357964, Nov 12, 2020

Filed:

May 10, 2019

Appl. No.:

16/409500

Inventors:

- Regensburg, DE
Maxim N. Tchoul - Winchester MA, US
Mary Ann Johnson - Rockport MA, US
Gertrud Kräuter - Regensburg, DE

International Classification:

H01L 33/56
H01L 33/48
H01L 33/50
H01L 33/60
H01L 33/62
H01L 33/64
C09D 183/04

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.

US Patent:

20200321496, Oct 8, 2020

Filed:

Jun 23, 2020

Appl. No.:

16/909685

Inventors:

- Regensburg, DE
Adam SCOTCH - Amesbury MA, US
Maxim N. TCHOUL - Winchester MA, US
Gertrud KRAEUTER - Regensburg, DE

International Classification:

H01L 33/50
H01L 33/56

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.

US Patent:

20200056091, Feb 20, 2020

Filed:

Aug 17, 2018

Appl. No.:

16/104743

Inventors:

- Regensburg, DE
Maxim N. Tchoul - Winchester MA, US
Darshan Kundaliya - Middleton MA, US
Adam Scotch - Amesbury MA, US
Gertrud Kräuter - Regensburg, DE

International Classification:

C09K 11/02
H01L 33/50
H01L 33/56
C09K 11/77
C08G 77/04
C09D 5/22
C09D 183/04

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.

US Patent:

20190352561, Nov 21, 2019

Filed:

May 16, 2018

Appl. No.:

15/981707

Inventors:

- Regensburg, DE
Maxim N. Tchoul - Winchester MA, US
Gertrud Kräuter - Regensburg, DE

International Classification:

C09K 11/02
H01L 33/50
H01L 33/56
C08G 77/18
C08G 77/06
C08K 3/36
B32B 27/08
B32B 27/28
B32B 38/00

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.

US Patent:

20190259919, Aug 22, 2019

Filed:

Feb 16, 2018

Appl. No.:

15/932366

Inventors:

- Regensburg, DE
Adam Scotch - Amesbury MA, US
Maxim N. Tchoul - Winchester MA, US
Gertrud Kraeuter - Regensburg, DE

International Classification:

H01L 33/50

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.

US Patent:

20180119902, May 3, 2018

Filed:

Sep 23, 2015

Appl. No.:

15/513974

Inventors:

- Wilmington MA, US
- Munich, DE
- Milano, IT
Qiong Huang - Winchester MA, US
Rodrigo Pereyra - Salem MA, US
Maxim Tchoul - Winchester MA, US
Alessandro Scordino - Dolo, IT
Lorenzo Baldo - Giavera del Montello, IT
Simon Bobbo - Treviso, IT
Dina Pasqualini - Udine, IT
Geert van der Meer - Ismaning, NL
Sridharan Venk - Treviso, IT

Assignee:

OSRAM SYLVANIA Inc. - Wilmington MA
OSRAM GmbH - Munich
OSRAM S.P.A. - SOCIETA' RIUNITE OSRAM EDISON CLERICI - Milano

International Classification:

F21S 4/22
F21V 23/00
F21V 3/02
F21V 17/10
F21V 7/22

Abstract:

Lighting devices, and methods of manufacturing the same, are provided. A lighting device includes a cover through which emitted light passes and a formed flexible light engine. The formed flexible light engine is placed within a housing, or serves as the housing itself. An interface couples to cover to the housing or the formed flexible light engine. The formed flexible light engine includes a flexible substrate and a plurality of solid state light sources located thereon. The plurality of solid state light sources are configured to emit light through the cover. The formed light engine has a defined shape created during the forming process. This enables placement on the housing within the lighting device, or contributes to the overall shape of the lighting device.

US Patent:

20170331016, Nov 16, 2017

Filed:

May 13, 2016

Appl. No.:

15/154576

Inventors:

Maxim Tchoul - Winchester MA, US
Alan Lenef - Belmont MA, US
Darshan Kundaliya - Beverly MA, US

International Classification:

H01L 33/54
H01L 33/58
H01L 33/50
H01L 33/56

Abstract:

There is herein described a lighting device including a composite encapsulant and an optical component. The lighting devices include a first interface between the composite encapsulant and a light emitting surface of a light source, and a second interface between the composite encapsulant and the optical component. In various embodiments, the composite encapsulant is configured to increase a critical angle at the first interface, so as to limit total internal reflection at the first interface. Moreover, the properties and/or other features of the composite encapsulant may be controlled to also limit total internal reflection at the second interface. Methods of making such lighting devices are also disclosed.

US Patent:

20170015901, Jan 19, 2017

Filed:

Jan 26, 2015

Appl. No.:

15/113239

Inventors:

- Wilmington MA, US
- Munich, DE
John Kelso - Exeter NH, US
Maxim Tchoul - Winchester MA, US
Yi Zheng - Lynnfield MA, US
Oliver Mehl - Berlin, DE
Peter Hoehmann - Berlin, DE
Markus Stange - Berlin, DE
Tobias Gleitsmann - Michendorf, DE

Assignee:

OSRAM SYLVANIA Inc. - Wilmington MA
OSRAM GmbH - Munich

International Classification:

C09K 11/77
C04B 37/02
G03B 21/20
C08K 3/22
G02B 7/00
H01S 3/00
C09K 11/08
C09J 183/04

Abstract:

There is herein described a ceramic phosphor target which may be used in a laser-activated remote phosphor application. The target comprises a substantially flat ceramic phosphor converter comprised of a photoluminescent polycrystalline ceramic which is attached to a reflective metal substrate by a high thermal conductivity adhesive.

Address:

12 Loring Ave, Winchester, MA 01890

VIN:

JTDBL40E399044747

Make:

TOYOTA

Model:

COROLLA

Year:

2009