Patents Assigned to Quarkstar LLC
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Patent number: 8338841Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: April 28, 2011Date of Patent: December 25, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Patent number: 8338199Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare blue-light LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. In one embodiment, an intermediate sheet having holes is then affixed to the bottom substrate, with the LEDs passing through the holes. A transparent top substrate having conductors is then laminated over the intermediate sheet. In another embodiment, no intermediate sheet is used. Various ways to connect the LEDs in series are described along with many embodiments. The light sheet provides a practical substitute for a standard 2×4 foot fluorescent ceiling fixture. A phosphor is used to generate white light.Type: GrantFiled: August 27, 2010Date of Patent: December 25, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Patent number: 8338839Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: April 4, 2011Date of Patent: December 25, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Patent number: 8314566Abstract: In one embodiment, an LED lamp has a generally bulb shape. The LEDs are low power types and are encapsulated in thin, narrow, flexible strips. The LEDs are connected in series in the strips to drop a desired voltage. The strips are affixed to the outer surface of a bulb form to provide structure to the lamp. The strips are connected in parallel to a power supply, which may be housed in the lamp. Since many low power LEDs are used and are spread out over a large surface area, there is no need for a large metal heat sink. Further, the light emission is similar to that of an incandescent bulb. In other embodiment, there is no bulb form and the strips are bendable to have a variety of shapes. In another embodiment, a light sheet is bent to provide 360 degrees of light emission. Many other embodiments are described.Type: GrantFiled: February 22, 2011Date of Patent: November 20, 2012Assignee: Quarkstar LLCInventors: Robert Steele, Louis Lerman, Allan Brent York, Wilson Dau, Jacqueline Teng, George Lerman
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Publication number: 20120268931Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate having conductors is then laminated over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. The light sheets may be formed to emit light from opposite surfaces of the light sheet, enabling it to be used in a hanging fixture to illuminate the ceiling as well as the floor. The light sheet provides a practical substitute for a standard 2×4 foot fluorescent ceiling fixture.Type: ApplicationFiled: June 29, 2012Publication date: October 25, 2012Applicant: QUARKSTAR LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20120268932Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate having conductors is then laminated over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. The light sheets may be formed to emit light from opposite surfaces of the light sheet, enabling it to be used in a hanging fixture to illuminate the ceiling as well as the floor. The light sheet provides a practical substitute for a standard 2×4 foot fluorescent ceiling fixture.Type: ApplicationFiled: June 29, 2012Publication date: October 25, 2012Applicant: QUARKSTAR LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20120250319Abstract: A solid state, bidirectional light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. An array of LEDs (e.g., 500 LEDs) is sandwiched between at least two transparent substrates having conductors bonded to the electrodes without wires. Various ways to connect the LEDs in series are described along with various embodiments. The light sheets are formed to emit light from opposite surfaces of the light sheet to create a bidirectional light sheet. The light sheet may be suspended from a ceiling to be perpendicular to the ceiling, or the angles of the light sheet may be adjusted. The suspended light sheet may form a cylinder for uniform illumination of the floor and ceiling. Lenses may be formed in the light sheet to emit light at any peak intensity angle to achieve any light emission pattern.Type: ApplicationFiled: May 31, 2012Publication date: October 4, 2012Applicant: QUARKSTAR LLCInventors: Wilson Dau, Louis Lerman, Allan Brent York
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Patent number: 8242518Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: GrantFiled: April 4, 2011Date of Patent: August 14, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Patent number: 8210716Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate having conductors is then laminated over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. The light sheets may be formed to emit light from opposite surfaces of the light sheet, enabling it to be used in a hanging fixture to illuminate the ceiling as well as the floor. The light sheet provides a practical substitute for a standard 2×4 foot fluorescent ceiling fixture.Type: GrantFiled: November 1, 2010Date of Patent: July 3, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Patent number: 8198109Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate. In another embodiment, a conductor layer is formed on the outer surface of the top substrate and makes contact with the LED electrodes and conductors on the bottom substrate via openings formed in the top substrate.Type: GrantFiled: March 9, 2011Date of Patent: June 12, 2012Assignee: Quarkstar LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Patent number: 8192051Abstract: A bidirectional light sheet including at least a first and second array of bare LED chips with top and bottom electrodes, where the arrays of LEDs are sandwiched between at least two transparent substrates having conductors bonded to the electrodes without wires to form the light sheet. The LEDs of the array are arranged within the light sheets to emit light from opposite surfaces of the light sheet to create a bidirectional light sheet. The bidirectional light sheet is suspended from a ceiling to be non-parallel to the ceiling.Type: GrantFiled: November 1, 2010Date of Patent: June 5, 2012Assignee: Quarkstar LLCInventors: Wilson Dau, Louis Lerman, Allan Brent York
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Solid State Light Sheet Having Wide Support Substrate and Narrow Strips Enclosing LED Dies In Series
Publication number: 20110204390Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: ApplicationFiled: May 3, 2011Publication date: August 25, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky -
Publication number: 20110204391Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: ApplicationFiled: May 3, 2011Publication date: August 25, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20110198631Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: ApplicationFiled: April 28, 2011Publication date: August 18, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20110198632Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: ApplicationFiled: April 28, 2011Publication date: August 18, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20110193105Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: ApplicationFiled: April 4, 2011Publication date: August 11, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20110193114Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate. In another embodiment, a conductor layer is formed on the outer surface of the top substrate and makes contact with the LED electrodes and conductors on the bottom substrate via openings formed in the top substrate.Type: ApplicationFiled: March 9, 2011Publication date: August 11, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20110193106Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate is then formed over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. In one method, the top substrate contains a conductor pattern that connects to LED electrodes and conductors on the bottom substrate.Type: ApplicationFiled: April 4, 2011Publication date: August 11, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20110195532Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare blue-light LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. In one embodiment, an intermediate sheet having holes is then affixed to the bottom substrate, with the LEDs passing through the holes. A transparent top substrate having conductors is then laminated over the intermediate sheet. In another embodiment, no intermediate sheet is used. Various ways to connect the LEDs in series are described along with many embodiments. The light sheet provides a practical substitute for a standard 2×4 foot fluorescent ceiling fixture. A phosphor is used to generate white light.Type: ApplicationFiled: August 27, 2010Publication date: August 11, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky
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Publication number: 20110180818Abstract: A solid state light sheet and method of fabricating the sheet are disclosed. In one embodiment, bare LED chips have top and bottom electrodes, where the bottom electrode is a large reflective electrode. The bottom electrodes of an array of LEDs (e.g., 500 LEDs) are bonded to an array of electrodes formed on a flexible bottom substrate. Conductive traces are formed on the bottom substrate connected to the electrodes. A transparent top substrate having conductors is then laminated over the bottom substrate. Various ways to connect the LEDs in series are described along with many embodiments. The light sheets may be formed to emit light from opposite surfaces of the light sheet, enabling it to be used in a hanging fixture to illuminate the ceiling as well as the floor. The light sheet provides a practical substitute for a standard 2×4 foot fluorescent ceiling fixture.Type: ApplicationFiled: January 31, 2011Publication date: July 28, 2011Applicant: QUARKSTAR, LLCInventors: Louis Lerman, Allan Brent York, Michael David Henry, Robert Steele, Brian D. Ogonowsky