Patents by Inventor OLEG SHCHEKIN
OLEG SHCHEKIN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11973169Abstract: 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.Type: GrantFiled: September 4, 2020Date of Patent: April 30, 2024Assignee: Lumileds LLCInventors: Danielle Russell Chamberlin, Erik Maria Roeling, Sumit Gangwal, Niek Van Leth, Oleg Shchekin
-
Patent number: 11901481Abstract: An inventive light-emitting apparatus comprises an array of multiple light-emitting pixels, and one or more transmissive optical elements positioned at a light-emitting surface of the light-emitting pixel array. One or more of the light-emitting pixels is defective. Each optical element is positioned at a location of a corresponding defective light-emitting pixel, and extends over that defective pixel and laterally at least partly over one or more adjacent pixels. Each optical element transmits laterally at least a portion of light emitted by the adjacent pixels to propagate away from the array from the location of the defective pixel, reducing the appearance of the defective pixel.Type: GrantFiled: December 1, 2021Date of Patent: February 13, 2024Assignee: Lumileds LLCInventors: Toni Lopez, Hossein Lotfi, Isaac Wildeson, Oleg Shchekin
-
Publication number: 20230045625Abstract: Systems for apparatuses formed of light emitting devices. Solutions for controlling the off-state appearance of lighting system designs is disclosed. Thermochromic materials are selected in accordance with a desired off-state of an LED device. The thermochromic materials are applied to a structure that is in a light path of light emitted by the LED device. In the off-state the LED device produces a desired off-state colored appearance. When the LED device is in the on-state, the thermochromic materials heat up and become more and more transparent. The light emitted from the device in its on-state does not suffer from color shifting due to the presence of the thermochromic materials. Furthermore, light emitted from the LED device in its on-state does not suffer from attenuation due to the presence of the thermochromic materials. Techniques to select and position thermochromic materials in or around LED apparatuses are presented.Type: ApplicationFiled: October 12, 2022Publication date: February 9, 2023Applicant: Lumileds LLCInventors: Hisashi Masui, Oleg Shchekin, Ken Shimizu, Marcel Bohmer, Frank Jin, Jyoti Bhardwaj
-
Patent number: 11486562Abstract: Systems for apparatuses formed of light emitting devices. Solutions for controlling the off-state appearance of lighting system designs is disclosed. Thermochromic materials are selected in accordance with a desired off-state of an LED device. The thermochromic materials are applied to a structure that is in a light path of light emitted by the LED device. In the off-state the LED device produces a desired off-state colored appearance. When the LED device is in the on-state, the thermochromic materials heat up and become more and more transparent. The light emitted from the device in its on-state does not suffer from color shifting due to the presence of the thermochromic materials. Furthermore, light emitted from the LED device in its on-state does not suffer from attenuation due to the presence of the thermochromic materials. Techniques to select and position thermochromic materials in or around LED apparatuses are presented.Type: GrantFiled: September 22, 2020Date of Patent: November 1, 2022Assignee: Lumileds LLCInventors: Hisashi Masui, Oleg Shchekin, Ken Shimizu, Marcel Bohmer, Frank Jin, Jyoti Bhardwaj
-
Publication number: 20220181515Abstract: An inventive light-emitting apparatus comprises an array of multiple light-emitting pixels, and one or more transmissive optical elements positioned at a light-emitting surface of the light-emitting pixel array. One or more of the light-emitting pixels is defective. Each optical element is positioned at a location of a corresponding defective light-emitting pixel, and extends over that defective pixel and laterally at least partly over one or more adjacent pixels. Each optical element transmits laterally at least a portion of light emitted by the adjacent pixels to propagate away from the array from the location of the defective pixel, reducing the appearance of the defective pixel.Type: ApplicationFiled: December 1, 2021Publication date: June 9, 2022Applicant: LUMILEDS LLCInventors: Toni Lopez, Hossein Lotfi, Isaac Wildeson, Oleg Shchekin
-
Patent number: 10957820Abstract: A light-emitting device is disclosed which includes a segmented active layer disposed between a segmented conductivity layer and a continuous conductivity layer, the active layer, the segmented conductivity layer, and the continuous conductivity layer being arranged to define a plurality of pixels, each pixel including a different segment of the segmented conductivity layer and the segmented active layer. A continuous wavelength converting layer disposed on the continuous conductivity layer is provided. A plurality of first contacts, each first contact being electrically connected to a different segment of the segmented conductivity layer is provided. One or more second contacts that are electrically connected to the continuous conductivity layer are also provided, the number of second contacts being less than the number of first contacts.Type: GrantFiled: December 19, 2018Date of Patent: March 23, 2021Assignee: Lumileds LLCInventors: Luke Gordon, Oleg Shchekin, Ashish Tandon, Rajat Sharma, Joseph Flemish, Andrei Papou, Wen Yu, Erik Young
-
Patent number: 10886439Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.Type: GrantFiled: February 10, 2020Date of Patent: January 5, 2021Assignee: Lumileds LLCInventors: Dawei Lu, Oleg Shchekin
-
Publication number: 20200403128Abstract: 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.Type: ApplicationFiled: September 4, 2020Publication date: December 24, 2020Applicant: LUMILEDS LLCInventors: Danielle Russell CHAMBERLIN, Erik Maria ROELING, Sumit GANGWAL, Niek VAN LETH, Oleg SHCHEKIN
-
Patent number: 10797206Abstract: Systems for apparatuses formed of light emitting devices. Solutions for controlling the off-state appearance of lighting system designs is disclosed. Thermochromic materials are selected in accordance with a desired off-state of an LED device. The thermochromic materials are applied to a structure that is in a light path of light emitted by the LED device. In the off-state the LED device produces a desired off-state colored appearance. When the LED device is in the on-state, the thermochromic materials heat up and become more and more transparent. The light emitted from the device in its on-state does not suffer from color shifting due to the presence of the thermochromic materials. Furthermore, light emitted from the LED device in its on-state does not suffer from attenuation due to the presence of the thermochromic materials. Techniques to select and position thermochromic materials in or around LED apparatuses are presented.Type: GrantFiled: June 28, 2016Date of Patent: October 6, 2020Assignee: LUMILEDS LLCInventors: Hisashi Masui, Oleg Shchekin, Ken Shimizu, Marcel Bohmer, Frank Jin, Jyoti Bhardwaj
-
Publication number: 20200286940Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.Type: ApplicationFiled: February 10, 2020Publication date: September 10, 2020Applicant: LUMILEDS LLCInventors: Dawei LU, Oleg SHCHEKIN
-
Patent number: 10559617Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.Type: GrantFiled: February 28, 2019Date of Patent: February 11, 2020Assignee: LUMILEDS LLCInventors: Dawei Lu, Oleg Shchekin
-
Publication number: 20190198716Abstract: A light-emitting device is disclosed which includes a segmented active layer disposed between a segmented conductivity layer and a continuous conductivity layer, the active layer, the segmented conductivity layer, and the continuous conductivity layer being arranged to define a plurality of pixels, each pixel including a different segment of the segmented conductivity layer and the segmented active layer. A continuous wavelength converting layer disposed on the continuous conductivity layer is provided. A plurality of first contacts, each first contact being electrically connected to a different segment of the segmented conductivity layer is provided. One or more second contacts that are electrically connected to the continuous conductivity layer are also provided, the number of second contacts being less than the number of first contacts.Type: ApplicationFiled: December 19, 2018Publication date: June 27, 2019Applicant: Lumileds LLCInventors: Luke GORDON, Oleg SHCHEKIN, Ashish TANDON, Rajat SHARMA, Joseph FLEMISH, Andrei PAPOU, Wen YU, Erik YOUNG
-
Publication number: 20190198549Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.Type: ApplicationFiled: February 28, 2019Publication date: June 27, 2019Applicant: Lumileds LLCInventors: Dawei Lu, Oleg Shchekin
-
Publication number: 20190189684Abstract: 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.Type: ApplicationFiled: December 19, 2018Publication date: June 20, 2019Applicant: Lumileds LLCInventors: Danielle Russell CHAMBERLIN, Erik Maria ROELING, Sumit GANGWAL, Niek VAN LETH, Oleg SHCHEKIN
-
Patent number: 10224358Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.Type: GrantFiled: May 9, 2017Date of Patent: March 5, 2019Inventors: Dawei Lu, Oleg Shchekin
-
Publication number: 20180374999Abstract: Systems for apparatuses formed of light emitting devices. Solutions for controlling the off-state appearance of lighting system designs is disclosed. Thermochromic materials are selected in accordance with a desired off-state of an LED device. The thermochromic materials are applied to a structure that is in a light path of light emitted by the LED device. In the off-state the LED device produces a desired off-state colored appearance. When the LED device is in the on-state, the thermochromic materials heat up and become more and more transparent. The light emitted from the device in its on-state does not suffer from color shifting due to the presence of the thermochromic materials. Furthermore, light emitted from the LED device in its on-state does not suffer from attenuation due to the presence of the thermochromic materials. Techniques to select and position thermochromic materials in or around LED apparatuses are presented.Type: ApplicationFiled: June 28, 2016Publication date: December 27, 2018Applicant: Lumileds LLCInventors: Hisashi MASUI, Oleg SHCHEKIN, Ken SHIMIZU, Marcel BOHMER, Frank JIN, Jyoti BHARDWAJ
-
Publication number: 20180331144Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.Type: ApplicationFiled: May 9, 2017Publication date: November 15, 2018Applicant: LUMILEDS LLCInventors: Dawei LU, Oleg Shchekin
-
Patent number: 9941454Abstract: Embodiments of the invention include a semiconductor light emitting diode (LED) attached to a top surface of a mount. A multi-layer reflector is disposed on the top surface of the mount adjacent to the LED. The multi-layer reflector includes layer pairs of alternating layers of low index of refraction material and high index of refraction material. A portion of the top surface in direct contact with the multi-layer reflector is non-reflective.Type: GrantFiled: October 31, 2016Date of Patent: April 10, 2018Assignee: Lumileds LLCInventors: Nathaniel T. Lawrence, Oleg Shchekin, Kenneth Vampola
-
Patent number: 9899578Abstract: A process for preparing a semiconductor structure for mounting to a carrier is disclosed. The process involves causing a support material to substantially fill a void defined by surfaces formed in the semiconductor structure and causing the support material to solidify sufficiently to support the semiconductor structure when mounted to the carrier.Type: GrantFiled: August 14, 2015Date of Patent: February 20, 2018Assignee: Lumileds LLCInventors: Decai Sun, Charlene Sun, Oleg Shchekin
-
Publication number: 20170047493Abstract: Embodiments of the invention include a semiconductor light emitting diode (LED) attached to a top surface of a mount. A multi-layer reflector is disposed on the top surface of the mount adjacent to the LED. The multi-layer reflector includes layer pairs of alternating layers of low index of refraction material and high index of refraction material. A portion of the top surface in direct contact with the multi-layer reflector is non-reflective.Type: ApplicationFiled: October 31, 2016Publication date: February 16, 2017Inventors: Nathaniel T. Lawrence, Oleg Shchekin, Kenneth Vampola