Patents by Inventor Charles O. Edwards
Charles O. Edwards 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: 8783887Abstract: A color/color temperature tunable light emitting device comprises: an excitation source (LED) operable to generate light of a first wavelength range and a wavelength converting component comprising a phosphor material which is operable to convert at least a part of the light into light of a second wavelength range. Light emitted by the device comprises the combined light of the first and second wavelength ranges. The wavelength converting component has a wavelength converting property (phosphor material concentration per unit area) that varies spatially. The color of light generated by the source is tunable by relative movement of the wavelength converting component and excitation source such that the light of the first wavelength range is incident on a different part of the wavelength converting component and the generated light comprises different relative proportions of light of the first and second wavelength ranges.Type: GrantFiled: October 1, 2007Date of Patent: July 22, 2014Assignee: Intematix CorporationInventors: James Caruso, Charles O. Edwards
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Patent number: 8077142Abstract: Reflective, low-cost display pixels and displays incorporating magneto-optical elements wherein an externally applied magnetic field is perpendicular to an axis of rotation of the magneto-optical elements and parallel to a viewing plane of a display made from these elements. The display elements have a restricted rotation about their long axis which can be actuated by an external magnetic field to produce a bistable, electronically writable image. In addition, architectural modifications to this arrangement can be made such that the power required to write the image to such a display is decreased, overall display efficiency is increased and cross-talk between pixels is nearly eliminated.Type: GrantFiled: September 24, 2007Date of Patent: December 13, 2011Assignee: Tred Displays CorporationInventors: Charles O. Edwards, James Caruso
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Patent number: 8020326Abstract: Composite magneto-optical elements with unique shapes and architectures comprising a magnetic component and a colored component. These magneto-optical elements can also be manufactured by a small variety of low-cost processes resulting in their use in a variety of applications including low-cost, large-format, reflective display devices.Type: GrantFiled: September 27, 2007Date of Patent: September 20, 2011Assignee: TRED Displays CorporationInventors: Charles O. Edwards, James Caruso
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Publication number: 20110209367Abstract: A light emitting sign comprising a plurality of blue LEDs operable to generate blue excitation light and a light emitting display surface comprising a light transmissive substrate and at least one phosphor overlaying at least a portion of one face of the substrate. The phosphor is configured to absorb at least a portion of the blue light generated by the LEDs and, in response, to emit light of a selected color other than blue. Regions of the display surface intended to generate blue light do not include the phosphor.Type: ApplicationFiled: May 6, 2011Publication date: September 1, 2011Applicant: INTEMATIX CORPORATIONInventors: Yi-Qun Li, Yi Dong, James Caruso, Charles O. Edwards
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Publication number: 20110203148Abstract: A light emitting sign comprising a light box housing a plurality of blue LEDs operable to generate blue excitation light and a light emitting display surface overlaying the light box opening. The light emitting display surface comprises a light transmissive substrate configured as a light transmissive window such that light generated by the sign is emitted from the substrate and a phosphor overlaying at least a portion of one face of the substrate. The phosphor is configured to absorb at least a portion of the blue light generated by the LEDs and, in response, to emit light of a selected color.Type: ApplicationFiled: May 6, 2011Publication date: August 25, 2011Applicant: INTEMATIX CORPORATIONInventors: Yi-Qun Li, Yi Dong, James Caruso, Charles O. Edwards
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Publication number: 20110194272Abstract: A light source comprises a blue emitting LED operable to generate blue excitation light and a light emitting surface comprising a light transmissive substrate and a phosphor. The LED is configured to irradiate the light emitting surface with excitation light such that the phosphor emits light of a second wavelength and wherein light emitted by the source comprises a combination of blue light from the LED and the second wavelength light from the phosphor. The light emitting surface is interchangeable thereby enabling the source to generate different selected colors of light using the same LED. The phosphor can be provided as a layer on the substrate or incorporated within the light transmissive substrate. The light emitting surface can be configured as a waveguide or as a light transmissive window.Type: ApplicationFiled: April 15, 2011Publication date: August 11, 2011Applicant: INTEMATIX CORPORATIONInventors: Yi-Qun Li, Yi Dong, James Caruso, Charles O. Edwards
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Patent number: 7937865Abstract: A light emitting sign comprising a light emitting display surface including at least one phosphor, and at least one radiation source configured to irradiate the display surface with excitation energy such that the phosphor emits light of a selected color. The sign further comprises a filter which is substantially transparent to light emitted by the display surface, filtering other colors of light. The display surface may be configured into a shape of a character, a symbol, or a device. Alternatively, a mask having at least one window substantially transparent to the emitted light and/or at least one light blocking region may be provided in which the window and/or light blocking region define a character, a symbol, or a device.Type: GrantFiled: March 6, 2007Date of Patent: May 10, 2011Assignee: Intematix CorporationInventors: Yi-Qun Li, Yi Dong, James Caruso, Charles O. Edwards
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Patent number: 7815965Abstract: A microdeposition system microdeposits droplets of fluid material to define a feature pattern on a substrate. The feature pattern for the substrate is defined. A mask is created for the feature pattern that reduces a density of defects that occur due to a malfunctioning nozzle of the microdeposition head. The droplets of fluid material are microdeposited onto the substrate based on the mask to define sub-features of the feature pattern. One of the nozzles of the microdeposition head is assigned to each of the sub-features in the feature pattern. The nozzles may be assigned randomly or using other functions. The assigned nozzles in the mask are assigned to one of a plurality of passes of the microdeposition head.Type: GrantFiled: September 18, 2009Date of Patent: October 19, 2010Assignee: Ulvac, Inc.Inventors: Charles O. Edwards, David Albertalli
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Patent number: 7757632Abstract: A microdeposition system and method includes a head with a plurality of nozzles. A controller generates nozzle firing commands that selectively fire the nozzles to create a desired feature pattern. Configuration memory stores voltage waveform parameters that define a voltage waveform for each of the nozzles. A digital to analog converter (DAC) sequencer communicates with the configuration memory and the controller and outputs a first voltage waveform for a first nozzle when a nozzle firing command for the first nozzle is received from the controller. A resistive ladder DAC receives the voltage waveforms from the DAC sequencer. An operational amplifier (opamp) communicates with the resistive ladder DAC and amplifies the voltage waveforms. The nozzles fire droplets when the voltage waveforms received from the opamp exceed a firing threshold of the nozzle.Type: GrantFiled: October 6, 2008Date of Patent: July 20, 2010Assignee: Ulvac, Inc.Inventors: Charles O. Edwards, David Albertalli, James Middleton, George Fellingham
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Publication number: 20100110531Abstract: Reflective color displays. Each pixel or sub-pixel of the display preferably comprises at least one magneto-optical element that can rotate in more than two stable positions, displaying a color corresponding to each position. Thus each element can display more than one color (in addition to black, if desired). Multiple elements may be combined to form a sub-pixel and/or pixel. The displays are preferably highly light reflective and preferably have low power consumption and increased resolution.Type: ApplicationFiled: November 23, 2009Publication date: May 6, 2010Applicant: TRED Dispalys, Inc.Inventors: Charles O. Edwards, James Caruso
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Publication number: 20100009068Abstract: A microdeposition system microdeposits droplets of fluid material to define a feature pattern on a substrate. The feature pattern for the substrate is defined. A mask is created for the feature pattern that reduces a density of defects that occur due to a malfunctioning nozzle of the microdeposition head. The droplets of fluid material are microdeposited onto the substrate based on the mask to define sub-features of the feature pattern. One of the nozzles of the microdeposition head is assigned to each of the sub-features in the feature pattern. The nozzles may be assigned randomly or using other functions. The assigned nozzles in the mask are assigned to one of a plurality of passes of the microdeposition head.Type: ApplicationFiled: September 18, 2009Publication date: January 14, 2010Applicant: ULVAC, INC.Inventors: Charles O. EDWARDS, David ALBERTALLI
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Patent number: 7611754Abstract: A microdeposition system microdeposit droplets of fluid material to define a feature pattern on a substrate. The feature pattern for the substrate is defined. A mask is created for the feature pattern that reduces a density of defects that occur due to a malfunctioning nozzle of the microdeposition head. The droplets of fluid material are microdeposited onto the substrate based on the mask to define subfeatures of the feature pattern. One of the nozzles of the microdeposition head is assigned to each of the sub-features in the feature pattern. The nozzles may be assigned randomly or using other functions. The assigned nozzles in the mask are assigned to one of a plurality of passes of the microdeposition head.Type: GrantFiled: November 27, 2002Date of Patent: November 3, 2009Assignee: ULVAC, Inc.Inventors: Charles O. Edwards, David Albertalli
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Publication number: 20090117672Abstract: A method of fabricating a light emitting device having a specific target color, CIE xy, of emitted light is described. The device comprises a light emitting diode that is operable to emit light of a first wavelength range and at least one phosphor material which converts at least a part of the light into light of a second wavelength range wherein light emitted by the device comprises the combined light of the first and second wavelength ranges. The method comprises: depositing a pre-selected quantity of the at least one phosphor material on a light emitting surface of the light emitting diode; operating the light emitting diode; measuring the color of light emitted by the device; comparing the measured color with the specific target color; and depositing and/or removing phosphor material to attain the desired target color.Type: ApplicationFiled: October 1, 2007Publication date: May 7, 2009Applicant: Intematix CorporationInventors: James Caruso, Charles O. Edwards
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Publication number: 20090086475Abstract: A color/color temperature tunable light emitting device comprises: an excitation source (LED) operable to generate light of a first wavelength range and a wavelength converting component comprising a phosphor material which is operable to convert at least a part of the light into light of a second wavelength range. Light emitted by the device comprises the combined light of the first and second wavelength ranges. The wavelength converting component has a wavelength converting property (phosphor material concentration per unit area) that varies spatially. The color of light generated by the source is tunable by relative movement of the wavelength converting component and excitation source such that the light of the first wavelength range is incident on a different part of the wavelength converting component and the generated light comprises different relative proportions of light of the first and second wavelength ranges.Type: ApplicationFiled: October 1, 2007Publication date: April 2, 2009Applicant: Intematix CorporationInventors: James Caruso, Charles O. Edwards
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Publication number: 20090029069Abstract: A microdeposition system and method includes a head with a plurality of nozzles. A controller generates nozzle firing commands that selectively fire the nozzles to create a desired feature pattern. Configuration memory stores voltage waveform parameters that define a voltage waveform for each of the nozzles. A digital to analog converter (DAC) sequencer communicates with the configuration memory and the controller and outputs a first voltage waveform for a first nozzle when a nozzle firing command for the first nozzle is received from the controller. A resistive ladder DAC receives the voltage waveforms from the DAC sequencer. An operational amplifier (opamp) communicates with the resistive ladder DAC and amplifies the voltage waveforms. The nozzles fire droplets when the voltage waveforms received from the opamp exceed a firing threshold of the nozzle.Type: ApplicationFiled: October 6, 2008Publication date: January 29, 2009Applicant: ULVAC, Inc.Inventors: Charles O. EDWARDS, David ALBERTALLI, James MIDDLETON, George FELLINGHAM
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Patent number: 7449070Abstract: A microdeposition system (20) and method includes a head with a plurality of nozzles (230). A controller (22) generates nozzle firing commands that selectively fire the nozzles to create a desired feature pattern. Configuration memory stores voltage waveform parameters that define a voltage waveform (280) for each of the nozzles. A digital to analog converter (DAC) sequencer communicates with the configuration memory and the controller and outputs a first voltage waveform for a first nozzle when a nozzle firing command for the first nozzle is received from the controller (22). A resistive ladder DAC receives the voltage waveforms from the DAC sequencer. An operational amplifier (opamp) communicates with the resistive ladder DAC and amplifies the voltage waveforms. The nozzles fire droplets when the voltage waveforms received from the opamp exceed a firing threshold of the nozzle (230).Type: GrantFiled: May 31, 2002Date of Patent: November 11, 2008Assignee: ULVAC, Inc.Inventors: Charles O. Edwards, David Albertalli, James Middleton, George Fellingham
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Publication number: 20080074368Abstract: Magneto-optical displays offer numerous advantages in a multitude of applications, most notably large format signage applications. New designs and architectures such as the use of optical fluids, segmented magneto-optical element densities, frontplane lenses and color filters significantly expand the utility of these displays.Type: ApplicationFiled: September 27, 2007Publication date: March 27, 2008Applicant: TRED Displays CorporationInventors: Charles O. Edwards, James Caruso
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ELECTROMAGNETIC WRITE HEADS AND BACKPLANES FOR USE IN BI-STABLE, REFLECTIVE MAGNETO OPTICAL DISPLAYS
Publication number: 20080074959Abstract: A write head for use in a bistable, magnetic optical display comprising one or more conducting coils configured to generate a magnetic field that is substantially perpendicular to the axis of rotation of one or more magneto optical elements of the optical display and parallel to a display viewing plane of the one or more magnetic display elements of the magnetic optical display such that an electrical pulse of less then 150 milliseconds is sufficient to create a magnetic field that alters the bistable state of the magneto optical display such that the display will stay in this new state without the need for ongoing electrical current being applied to the write head.Type: ApplicationFiled: September 27, 2007Publication date: March 27, 2008Applicant: TRED Displays CorporationInventors: Charles O. Edwards, James Caruso -
Publication number: 20080072467Abstract: Composite magneto-optical elements with unique shapes and architectures comprising a magnetic component and a colored component. These magneto-optical elements can also be manufactured by a small variety of low-cost processes resulting in their use in a variety of applications including low-cost, large-format, reflective display devices.Type: ApplicationFiled: September 27, 2007Publication date: March 27, 2008Applicant: TRED Displays CorporationInventors: Charles O. Edwards, James Caruso
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Publication number: 20080074365Abstract: Reflective, low-cost display pixels and displays incorporating magneto-optical elements wherein an externally applied magnetic field is perpendicular to an axis of rotation of the magneto-optical elements and parallel to a viewing plane of a display made from these elements. The display elements have a restricted rotation about their long axis which can be actuated by an external magnetic field to produce a bistable, electronically writable image. In addition, architectural modifications to this arrangement can be made such that the power required to write the image to such a display is decreased, overall display efficiency is increased and cross-talk between pixels is nearly eliminated.Type: ApplicationFiled: September 24, 2007Publication date: March 27, 2008Applicant: TRED Displays CorporationInventors: Charles O. Edwards, James Caruso