Patents by Inventor Roger Green Stewart
Roger Green Stewart 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: 6985361Abstract: Methods and apparatuses for an electronic assembly. The electronic assembly has a first object created and separated from a host substrate. The first object has a first electrical circuitry therein. A carrier substrate is coupled to the first object wherein the first object is being recessed below a surface of the carrier substrate. The carrier substrate further includes a first carrier connection pad and a second carrier connection pad that interconnect with the first object using metal connectors. A receiving substrate, which is substantially planar, including a second electrical circuitry, a first receiving connection pad, and a second receiving connection pad that interconnect with the second electrical circuitry using the metal connectors. The carrier substrate is coupled to the receiving substrate using the connection pads mentioned.Type: GrantFiled: September 27, 2004Date of Patent: January 10, 2006Assignee: Alien Technology CorporationInventors: Thomas Lloyd Credelle, Glenn Gengel, Roger Green Stewart, William Hill Joseph
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Patent number: 6980184Abstract: Integrated circuits, assemblies with integrated circuits, display devices and electrical circuits. There are various different aspects and embodiments of these apparatuses described herein. According to one aspect, a display device includes a plurality of display drivers which includes a serial shift register, wherein the display drivers are located in the display area of the display device which is viewable. According to another aspect, an integrated circuit, which has a plurality of functionally symmetric interface pads, includes an instruction decoder which decodes instructions received through at least one of the pads. In another aspect, an integrated circuit (IC) includes a position detector which detects a position of the IC relative to a receptor substrate and provides a signal which is determined by the position; this IC may be used in an assembly which includes the receptor substrate.Type: GrantFiled: September 27, 2000Date of Patent: December 27, 2005Assignee: Alien Technology CorporationInventors: Roger Green Stewart, Edward Boling, Jeffrey J. Jacobsen
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Patent number: 6927085Abstract: Apparatuses and methods for forming displays are claimed. One embodiment of the invention relates to forming an assembly using different sized blocks in either a flexible or rigid substrate.Type: GrantFiled: June 30, 2003Date of Patent: August 9, 2005Assignee: Alien Technology CorporationInventors: Mark A. Hadley, Ann Chiang, Gordon S. W. Craig, Jeffrey Jay Jacobsen, John Stephen Smith, Jay Tu, Roger Green Stewart
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Patent number: 6897855Abstract: A tiled display device is formed from display tiles having picture element (pixel) positions defined up to the edge of the tiles. Each pixel position has an organic light-emitting diode (OLED) active area which occupies approximately 25 percent of the pixel area. Each tile includes a memory which stores display data, and pixel driving circuitry which controls the scanning and illumination of the pixels on the tile. The pixel driving circuitry is located on the back side of the tile and connections to pixel electrodes on the front side of the tile are made by vias which pass through portions of selected ones of the pixel areas which are not occupied by the active pixel material. The tiles are to formed in two parts, an electronics section and a display section. Each of these parts includes connecting pads which cover several pixel positions. Each connecting pad makes an electrical connection to only one row electrode or column electrode.Type: GrantFiled: February 16, 1999Date of Patent: May 24, 2005Assignee: Sarnoff CorporationInventors: Dennis Lee Matthies, Roger Green Stewart, James Harold Atherton, Dennis J. Bechis, Heinz H. Busta, Zilan Shen
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Patent number: 6863219Abstract: Apparatuses and methods for forming displays are claimed. One embodiment of the invention includes a contact smart card wherein fluidic self assembly is used to build the microelectronic structures on the display such that a contact smart data is transmitted unidirectionally. A contact smart card is inserted directly into a device that transfers data to a display coupled to the smart card. Another embodiment of the invention relates to a contactless smart card in which fluidic self assembly is also used here to build the display. Data is transmitted to an antenna that is embedded in the contactless card in which a plurality of blocks were deposited thereon.Type: GrantFiled: August 17, 2001Date of Patent: March 8, 2005Assignee: Alien Technology CorporationInventors: Jeffrey Jay Jacobsen, Roger Green Stewart
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Publication number: 20040246280Abstract: Systems and methods are disclosed to correct for image degraded signals on a liquid crystal display panel are disclosed. Panels that comprise a subpixel repeating group having an even number of subpixels in a first direction may have parasitic capacitance and other signal errors due to imperfect dot inversion schemes thereon. Techniques for signal correction and localizing of errors onto particular subpixels are disclosed.Type: ApplicationFiled: June 6, 2003Publication date: December 9, 2004Inventors: Thomas Lloyd Credelle, Roger Green Stewart
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Patent number: 6825836Abstract: A demultiplexer applies picture information to pixels arranged in an array of a display device having columns and rows. The demultiplexer includes transistor switches each having a control terminal, an input terminal and an output terminal. A first bus couples switch control signals to the control terminals of the switches. The conductors of a first bus extend in a region containing each of the switches to form a global bus arrangement. Local buses have each conductors coupled to the input terminals of the switches associated with the individual local bus. The output terminals of the switches associated with the individual local bus are coupled to corresponding, consecutively disposed column conductors of the array. The individual local bus has a section that crosses over the first bus and a second section extending between the crossover section and the input terminals of the associated switches.Type: GrantFiled: November 14, 2000Date of Patent: November 30, 2004Assignee: Thomson Licensing S.A.Inventors: Roger Green Stewart, Frank Paul Cuomo
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Patent number: 6816380Abstract: Methods and apparatuses for an electronic assembly. The electronic assembly has a first object created and separated from a host substrate. The first object has a first electrical circuitry therein. A carrier substrate is coupled to the first object wherein the first object is being recessed below a surface of the carrier substrate. The carrier substrate further includes a first carrier connection pad and a second carrier connection pad that interconnect with the first object using metal connectors. A receiving substrate, which is substantially planar, including a second electrical circuitry, a first receiving connection pad, and a second receiving connection pad that interconnect with the second electrical circuitry using the metal connectors. The carrier substrate is coupled to the receiving substrate using the connection pads mentioned.Type: GrantFiled: June 17, 2003Date of Patent: November 9, 2004Assignee: Alien Technology CorporationInventors: Thomas Lloyd Credelle, Glenn Gengel, Roger Green Stewart, William Hill Joseph
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Publication number: 20040068864Abstract: Apparatuses and methods for forming displays are claimed. One embodiment of the invention relates to forming an assembly using different sized blocks in either a flexible or rigid substrate.Type: ApplicationFiled: June 30, 2003Publication date: April 15, 2004Inventors: Mark A. Hadley, Ann Chiang, Gordon S. W. Craig, Jeffrey Jay Jacobsen, John Stephen Smith, Jay Tu, Roger Green Stewart
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Patent number: 6683663Abstract: Apparatuses and methods for forming displays are claimed. One embodiment of the invention relates to forming an assembly using different sized blocks in either a flexible or rigid substrate.Type: GrantFiled: August 17, 2001Date of Patent: January 27, 2004Assignee: Alien Technology CorporationInventors: Mark A. Hadley, Ann Chiang, Gordon S. W. Craig, Jeffrey Jay Jacobsen, John Stephen Smith, Jay Tu, Roger Green Stewart
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Publication number: 20030214792Abstract: Methods and apparatuses for an electronic assembly. The electronic assembly has a first object created and separated from a host substrate. The first object has a first electrical circuitry therein. A carrier substrate is coupled to the first object wherein the first object is being recessed below a surface of the carrier substrate. The carrier substrate further includes a first carrier connection pad and a second carrier connection pad that interconnect with the first object using metal connectors. A receiving substrate, which is substantially planar, including a second electrical circuitry, a first receiving connection pad, and a second receiving connection pad that interconnect with the second electrical circuitry using the metal connectors. The carrier substrate is coupled to the receiving substrate using the connection pads mentioned.Type: ApplicationFiled: June 17, 2003Publication date: November 20, 2003Inventors: Thomas Lloyd Credelle, Glenn Gengel, Roger Green Stewart, William Hill Joseph
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Patent number: 6618030Abstract: LED pixel structures and methods that improve brightness uniformity by reducing current nonuniformities in a light-emitting diode of the pixel structures are disclosed.Type: GrantFiled: February 27, 2001Date of Patent: September 9, 2003Assignees: Sarnoff Corporation, Mitsubishi Chemical CorporationInventors: Michael Gillis Kane, James Harold Atherton, Roger Green Stewart, Frank Paul Cuomo
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Patent number: 6606247Abstract: Methods and apparatuses for an electronic assembly. The electronic assembly has a first object created and separated from a host substrate. The first object has a first electrical circuitry therein. A carrier substrate is coupled to the first object wherein the first object is being recessed below a surface of the carrier substrate. The carrier substrate further includes a first carrier connection pad and a second carrier connection pad that interconnect with the first object using metal connectors. A receiving substrate, which is substantially planar, including a second electrical circuitry, a first receiving connection pad, and a second receiving connection pad that interconnect with the second electrical circuitry using the metal connectors. The carrier substrate is coupled to the receiving substrate using the connection pads mentioned.Type: GrantFiled: May 31, 2001Date of Patent: August 12, 2003Assignee: Alien Technology CorporationInventors: Thomas Lloyd Credelle, Glenn Gengel, Roger Green Stewart, William Hill Joseph
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Publication number: 20020181208Abstract: Methods and apparatuses for an electronic assembly. The electronic assembly has a first object created and separated from a host substrate. The first object has a first electrical circuitry therein. A carrier substrate is coupled to the first object wherein the first object is being recessed below a surface of the carrier substrate. The carrier substrate further includes a first carrier connection pad and a second carrier connection pad that interconnect with the first object using metal connectors. A receiving substrate, which is substantially planar, including a second electrical circuitry, a first receiving connection pad, and a second receiving connection pad that interconnect with the second electrical circuitry using the metal connectors. The carrier substrate is coupled to the receiving substrate using the connection pads mentioned.Type: ApplicationFiled: May 31, 2001Publication date: December 5, 2002Inventors: Thomas Lloyd Credelle, Glenn Gengel, Roger Green Stewart, William Hill Joseph
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Patent number: 6476783Abstract: A display device having features which enhance the contrast of displayed images includes a pixel structure that defines an active pixel area and an inactive pixel area. The display device may be an emissive device such as an OLED or electroluminescent device, a transmissive device such as a liquid crystal light-valve device or a reflective device, such as a Bistable, Reflective Cholesteric (BRC) liquid crystal device. The ratio of the active pixel area to the total pixel area is less than 50 percent. The display device includes a transparent cover plate having a black matrix formed on the viewer side of the cover plate. The display device may be a tiled display in which case the black matrix is formed on an integrator plate to which the individual tiles are bound to form the complete display device. For reflective or emissive display materials, the display device includes an electronics section including a circuit board which provides driving signals for the pixels of the display device.Type: GrantFiled: February 16, 1999Date of Patent: November 5, 2002Assignee: Sarnoff CorporationInventors: Dennis Lee Matthies, Zilan Shen, Roger Green Stewart, James Harold Atherton
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Patent number: 6414661Abstract: A method and associated system that compensates for long-term variations in the light-emitting efficiency of individual organic light emitting diodes (OLEDs) in an OLED display device, calculates and predicts the decay in light output efficiency of each pixel based on the accumulated drive current applied to the pixel and derives a correction coefficient that is applied to the next drive current for each pixel. In one exemplary embodiment of the invention, the calculation is based the accumulated current that has been passed through the device. In another exemplary embodiment, the calculation is based on a difference in voltage across the pixel at two instants. The compensation system is best used after the display device has been calibrated to provide uniform light output.Type: GrantFiled: July 5, 2000Date of Patent: July 2, 2002Assignee: Sarnoff CorporationInventors: Zilan Shen, Dennis Lee Matthies, James H. Atherton, Roger Green Stewart
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Publication number: 20020050958Abstract: A display device having features which enhance the contrast of displayed images includes a pixel structure that defines an active pixel area and an inactive pixel area. The display device may be an emissive device such as an OLED or electroluminescent device, a transmissive device such as a liquid crystal light-valve device or a reflective device, such as a Bistable, Reflective Cholesteric (BRC) liquid crystal device. The ratio of the active pixel area to the total pixel area is less than 50 percent. The display device includes a transparent cover plate having a black matrix formed on the viewer side of the cover plate. The display device may be a tiled display in which case the black matrix is formed on an integrator plate to which the individual tiles are bound to form the complete display device. For reflective or emissive display materials, the display device includes an electronics section including a circuit board which provides driving signals for the pixels of the display device.Type: ApplicationFiled: February 16, 1999Publication date: May 2, 2002Inventors: DENNIS LEE MATTHIES, ZILAN SHEN, ROGER GREEN STEWART, JAMES HAROLD ATHERTON
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Patent number: 6370019Abstract: A plurality of sealing methods may be used either alone or in combination with each other to seal an electronic display structure. The display module includes a first substrate having a plurality of column electrodes. Each of a plurality of portions of a display material are coupled to one of the plurality of column electrodes and to one of a plurality of row electrodes. A pixel seal may be formed over the display material to encapsulate the display material. An area seal may be formed upon the first substrate to encapsulates the row electrodes, the column electrodes, and the portions of display material. A bead seal may be formed around the perimeter of the first substrate to couple it to a second substrate while sealing the internal display material. An edge seal may be formed by a banded structure spanning from the first substrate to the second substrate and extending around the perimeter of the substrates.Type: GrantFiled: February 16, 1999Date of Patent: April 9, 2002Assignee: Sarnoff CorporationInventors: Dennis Lee Matthies, Zilan Shen, Roger Green Stewart, James Harold Atherton
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Patent number: 6348906Abstract: A row-select circuit for an organic light emitting diode display propagates a gating pulse through a shift register. This gating pulse is synchronized with a system clock signal and is used to selectively apply a plurality of broadcast control signals to a selected row of pixels on the display. The line scanning circuitry is controlled to clear and autozero the pixels in the display either one line at a time or the entire image frame at a time. According to another aspect of the invention, the clearing of a row of pixels in the display is performed over several line intervals before the row is autozeroed and loaded with new values. According to yet another aspect of the invention, the broadcast control signals may be adapted to achieve the best performance for each display device.Type: GrantFiled: August 26, 1999Date of Patent: February 19, 2002Assignee: Sarnoff CorporationInventors: Robin Mark Adrian Dawson, Zilan Shen, Alfred Charles Ipri, Roger Green Stewart, James Harold Atherton, Stephen John Connor
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Patent number: 6307322Abstract: A circuit design technique polysilicon thin-film transistor (TFT) circuitry produces circuits that are relatively less sensitive to threshold variations among the TFT's than circuits designed using conventional techniques. The circuit is designed such that thin-film transistors that are sensitive to threshold variations are made larger than other thin-film transistors in the circuitry to minimize threshold variations among similar transistors implemented in the circuit. In one embodiment, a pixel structure for an active matrix display device implemented in polysilicon includes two transistors, a select transistor and a drive transistor. The drive transistor in the pixel structure is a thin film metal oxide silicon (MOS) transistor that includes a gate to source capacitance sufficient to hold an electrical potential which keeps the transistor in a conducting state for an image field interval. One embodiment of the pixel structure includes only the select transistor and the drive transistor.Type: GrantFiled: December 28, 1999Date of Patent: October 23, 2001Assignee: Sarnoff CorporationInventors: Robin Mark Adrian Dawson, Zilan Shen, Alfred Charles Ipri, Roger Green Stewart, Michael Gillis Kane