Patents by Inventor Wayne L. Snyder
Wayne L. Snyder 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).
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Patent number: 10312422Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.Type: GrantFiled: February 27, 2017Date of Patent: June 4, 2019Assignee: Lumileds LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach
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Publication number: 20170301838Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.Type: ApplicationFiled: February 27, 2017Publication date: October 19, 2017Inventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach
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Patent number: 9583683Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.Type: GrantFiled: December 20, 2013Date of Patent: February 28, 2017Assignee: Lumileds LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach
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Publication number: 20140191265Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.Type: ApplicationFiled: December 20, 2013Publication date: July 10, 2014Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.VInventors: MICHAEL D. CAMRAS, MICHAEL R. KRAMES, WAYNE L. SNYDER, FRANK M. STERANKA, ROBERT C. TABER, JOHN J. UEBBING, DOUGLAS W. POCIUS, TROY A. TROTTIER, CHRISTOPHER H. LOWERY, GERD O. MUELLER, REGINA B. MUELLER-MACH
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Patent number: 8628985Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.Type: GrantFiled: October 4, 2011Date of Patent: January 14, 2014Assignee: Philips Lumileds Lighting Company LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach
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Patent number: 8415694Abstract: A device includes a light emitting structure and a wavelength conversion member comprising a semiconductor. The light emitting structure is bonded to the wavelength conversion member. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with an inorganic bonding material. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with a bonding material having an index of refraction greater than 1.5.Type: GrantFiled: February 23, 2010Date of Patent: April 9, 2013Assignee: Philips Lumileds Lighting Company LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach, Gloria E. Hofler
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Publication number: 20120021543Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.Type: ApplicationFiled: October 4, 2011Publication date: January 26, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.VInventors: Michael D. CAMRAS, MICHAEL R. KRAMES, WAYNE L. SNYDER, FRANK M. STERANKA, ROBERT C. TABER, JOHN J. UEBBING, DOUGLAS W. POCIUS, TROY A. TROTTIER, CHRISTOPHER H. LOWERY, GERD O. MUELLER, REGINA B. MUELLER-MACH
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Patent number: 8049234Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.Type: GrantFiled: October 8, 2007Date of Patent: November 1, 2011Assignee: Philips Lumileds Lighting Company LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach, Gloria E. Hofler
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Publication number: 20100148151Abstract: A device includes a light emitting structure and a wavelength conversion member comprising a semiconductor. The light emitting structure is bonded to the wavelength conversion member. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with an inorganic bonding material. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with a bonding material having an index of refraction greater than 1.5.Type: ApplicationFiled: February 23, 2010Publication date: June 17, 2010Applicant: PHILIPS LUMILEDS LIGHTING COMPANY, LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach, Gloria E. Hofler
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Patent number: 7279345Abstract: A method of bonding a transparent optical element to a light emitting device having a stack of layers including semiconductor layers comprising an active region is provided. The method includes elevating a temperature of the optical element and the stack and applying a pressure to press the optical element and the stack together. In one embodiment, the method also includes disposing a layer of a transparent bonding material between the stack and the optical element. The bonding method can be applied to a premade optical element or to a block of optical element material which is later formed or shaped into an optical element such as a lens or an optical concentrator.Type: GrantFiled: September 10, 2004Date of Patent: October 9, 2007Assignee: Philips Lumileds Lighting Company, LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach, Gloria E. Hofler
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Patent number: 7064355Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent optical element (e.g., a lens or an optical concentrator) to a light emitting device comprising an active region includes elevating a temperature of the optical element and the stack and applying a pressure to press the optical element and the light emitting device together. A block of optical element material may be bonded to the light emitting device and then shaped into an optical element. Bonding a high refractive index optical element to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection.Type: GrantFiled: June 12, 2001Date of Patent: June 20, 2006Assignee: Lumileds Lighting U.S., LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach, Gloria E. Hofler
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Patent number: 7053419Abstract: Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.Type: GrantFiled: September 12, 2000Date of Patent: May 30, 2006Assignee: LumiLeds Lighting U.S., LLCInventors: Michael D. Camras, Michael R. Krames, Wayne L. Snyder, Frank M. Steranka, Robert C. Taber, John J. Uebbing, Douglas W. Pocius, Troy A. Trottier, Christopher H. Lowery, Gerd O. Mueller, Regina B. Mueller-Mach
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Patent number: 6791636Abstract: In one embodiment, a color, transmissive LCD uses red, green, and blue LEDs as the light source. The red LED is optically coupled to a first edge of a rectangular light guide; the green LED is optically coupled to a second edge of the light guide; and the blue LED is optically coupled to a third edge of the light guide. Three sets of deformities in the light guide selectively direct the R, G, and B light out of the front surface of the light guide. The R, G, and B LEDs are constantly on and there is no color filtering. In another embodiment, a blue light LED is optically coupled to one or more edges of a light guide, and phosphor strips are placed on a surface of the light guide coinciding with the red and green pixel columns. Deformities below the red and green phosphor strips and below the blue pixel areas direct blue light to the backs of the phosphor strips and to the blue pixel areas. If an ultraviolet light LED is used, phosphor strips for the blue pixel areas would also be used.Type: GrantFiled: May 10, 2001Date of Patent: September 14, 2004Assignee: Lumilecs Lighting U.S., LLCInventors: Steven PĂ olini, Gerard Harbers, Wayne L. Snyder
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Patent number: 6768525Abstract: A color, transmissive LCD is described herein which uses red, green, and blue LEDs as the light source. The R, G, and B LEDs are coupled to separate light guides, one light guide for each color. These light guides may take the form of three overlying plastic or glass sheets. In another embodiment, thin fiber optic cables arranged parallel to each other on a supporting surface are used as the light guides, and each fiber optic cable is optically coupled to only one R, G, or B LED in a repeating pattern. The light guides contain deformities to emit light coinciding with the positions of the red, green, and blue pixels. The R, G, and B LEDs are constantly on, and there is no color filtering.Type: GrantFiled: December 1, 2000Date of Patent: July 27, 2004Assignee: Lumileds Lighting U.S. LLCInventors: Steven Paolini, Gerard Harbers, Wayne L. Snyder
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Patent number: 6756186Abstract: A method of forming a photoresist mask on a light emitting device is disclosed. A portion of the light emitting device is coated with photoresist. A portion of the photoresist is exposed by light impinging on the interface of the light emitting device and the photoresist from inside the light emitting device. The photoresist is developed, removing either the exposed photoresist or the unexposed photoresist. In one embodiment, the photoresist mask may be used to form a phosphor coating. After the photoresist is developed to remove the exposed photoresist, a phosphor layer is deposited overlying the light emitting device. The unexposed portion of photoresist is stripped. In some embodiments, the light exposing the photoresist is produced by electrically biasing the light emitting device, or by shining light into the light emitting device through an aperture or by a focussed laser.Type: GrantFiled: March 22, 2002Date of Patent: June 29, 2004Assignee: Lumileds Lighting U.S., LLCInventors: William D. Collins, III, Wayne L. Snyder, Daniel A. Steigerwald
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Publication number: 20030181122Abstract: A method of forming a photoresist mask on a light emitting device is disclosed. A portion of the light emitting device is coated with photoresist. A portion of the photoresist is exposed by light impinging on the interface of the light emitting device and the photoresist from inside the light emitting device. The photoresist is developed, removing either the exposed photoresist or the unexposed photoresist. In one embodiment, the photoresist mask may be used to form a phosphor coating. After the photoresist is developed to remove the exposed photoresist, a phosphor layer is deposited overlying the light emitting device. The unexposed portion of photoresist is stripped. In some embodiments, the light exposing the photoresist is produced by electrically biasing the light emitting device, or by shining light into the light emitting device through an aperture or by a focussed laser.Type: ApplicationFiled: March 22, 2002Publication date: September 25, 2003Inventors: William D. Collins, Wayne L. Snyder, Daniel A. Steigerwald
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Publication number: 20030006423Abstract: A semiconductor package includes two or more conductors. An inner conductor may provide an attachment point for one or more semiconductor devices at an end of the inner conductor and an electrical connection at an opposite end. An outer conductor may be pressed onto the inner conductor and may be separated by an electrical insulator. A semiconductor device, such as a light emitting diode, may be attached to the inner conductor and to the outer conductor. The package may be, for example, cylindrical or a rectangular solid. The package may incorporate additional semiconductor mounting surfaces and more than two conductors.Type: ApplicationFiled: September 11, 2002Publication date: January 9, 2003Inventors: Ban Poh Loh, Douglas P. Woolverton, Wayne L. Snyder
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Patent number: 6492725Abstract: A concentrically leaded power semiconductor package includes two or more generally concentric conductors. An inner conductor may provide an attachment point for one or more semiconductor devices at an end of the inner conductor and an electrical connection at an opposite end. An outer conductor may be pressed onto the inner conductor and may be separated by an electrical insulator. A semiconductor device, such as a light emitting diode (LED), may be attached to the inner conductor by epoxy gluing or by soldering, and may be attached to the outer conductor by a bonding wire. The package may be cylindrical or a rectangular solid. The package may incorporate additional semiconductor mounting surfaces and more than two conductors.Type: GrantFiled: February 4, 2000Date of Patent: December 10, 2002Assignee: Lumileds Lighting, U.S., LLCInventors: Ban Poh Loh, Douglas P. Woolverton, Wayne L. Snyder
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Publication number: 20020167624Abstract: In one embodiment, a color, transmissive LCD uses red, green, and blue LEDs as the light source. The red LED is optically coupled to a first edge of a rectangular light guide; the green LED is optically coupled to a second edge of the light guide; and the blue LED is optically coupled to a third edge of the light guide. Three sets of deformities in the light guide selectively direct the R, G, and B light out of the front surface of the light guide. The R, G, and B LEDs are constantly on and there is no color filtering. In another embodiment, a blue light LED is optically coupled to one or more edges of a light guide, and phosphor strips are placed on a surface of the light guide coinciding with the red and green pixel columns. Deformities below the red and green phosphor strips and below the blue pixel areas direct blue light to the backs of the phosphor strips and to the blue pixel areas. If an ultraviolet light LED is used, phosphor strips for the blue pixel areas would also be used.Type: ApplicationFiled: May 10, 2001Publication date: November 14, 2002Inventors: Steven Paolini, Gerard Harbers, Wayne L. Snyder
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Publication number: 20020067444Abstract: A color, transmissive LCD is described herein which uses red, green, and blue LEDs as the light source. The R, G, and B LEDs are coupled to separate light guides, one light guide for each color. These light guides may take the form of three overlying plastic or glass sheets. In another embodiment, thin fiber optic cables arranged parallel to each other on a supporting surface are used as the light guides, and each fiber optic cable is optically coupled to only one R, G, or B LED in a repeating pattern. The light guides contain deformities to emit light coinciding with the positions of the red, green, and blue pixels. The R, G, and B LEDs are constantly on, and there is no color filtering.Type: ApplicationFiled: December 1, 2000Publication date: June 6, 2002Inventors: Steven Paolini, Gerard Harbers, Wayne L. Snyder