Patents by Inventor Jignesh Gandhi

Jignesh Gandhi 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).

  • Publication number: 20120154455
    Abstract: Systems and methods for a display having an array of pixels, a substrate, and a control matrix formed on the substrate are described. The array of pixels includes mechanical light modulators that can be referred to as micro-electro-mechanical or MEMS light modulators. The MEMS light modulators may be shutter-based light modulators, and an array of apertures may be formed on the substrate corresponding spatially to the shutters in the array of shutter-based light modulators. Each modulator is configured to be driven from a-light-blocking state to a-light-transmissive state through a movement direction. The array of light modulators are arranged to reduce the correlations in movement directions of neighboring pixels, thereby reducing the amplitude of acoustic emissions from the display.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    Applicant: Pixtronix, Inc.
    Inventors: Jasper Lodewyk Steyn, Jignesh Gandhi
  • Publication number: 20110267668
    Abstract: Display devices incorporating shutter-based light modulators are disclosed along with methods of manufacturing such devices. The methods are compatible with thin-film manufacturing processes known in the art and result in displays having lower power-consumption.
    Type: Application
    Filed: July 11, 2011
    Publication date: November 3, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Nesbitt W. Hagood, IV, Jasper Lodewyk Steyn, Timothy J. Brosnihan, Jignesh Gandhi, John J. Fijol, Richard S. Payne, Roger Barton
  • Publication number: 20110242844
    Abstract: Light guides and backlight systems are disclosed that include one or more groups of geometric light redirectors whose density and/or orientation across the surface of a light guide varies to improve light emission uniformity and to reduce visual artifacts.
    Type: Application
    Filed: June 20, 2011
    Publication date: October 6, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Je Hong Kim, Jignesh Gandhi
  • Publication number: 20110205756
    Abstract: Apparatus and method for collecting and directing light from a source via a light guide and modulated display assembly in an efficient manner through the design and use of prismatic optical structures, diffusers and/or light redirectors. The prismatic optical structures may include a plurality of rear-facing prisms and/or front-facing prisms, each with an associated prism apex angle. The prism apex angle for each of the prisms may be selected such that on-axis brightness intensity and/or total optical power extraction of the display are improved.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 25, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Je Hong Kim, Jignesh Gandhi
  • Patent number: 7999994
    Abstract: Display devices incorporating shutter-based light modulators are disclosed along with methods of manufacturing such devices. The methods are compatible with thin-film manufacturing processes known in the art and result in displays having lower power-consumption.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: August 16, 2011
    Assignee: Pixtronix, Inc.
    Inventors: Nesbitt W. Hagood, IV, Jasper Lodewyk Steyn, Timothy J. Brosnihan, Jignesh Gandhi, John J. Fijol, Richard S. Payne, Roger W. Barton
  • Publication number: 20110157679
    Abstract: This methods and devices described herein relate to displays and methods of manufacturing cold seal fluid-filled displays, including MEMS. The fluid substantially surrounds the moving components of the MEMS display to reduce the effects of stiction and to improve the optical and electromechanical performance of the display. The invention relates to a method for sealing a MEMS display at a lower temperature such that a vapor bubble does not formforms only at temperatures about 15° C. to about 20° C. below the seal temperature. In some embodiments, the MEMS display apparatus includes a first substrate, a second substrate separated from the first substrate by a gap and supporting an array of light modulators, a fluid substantially filling the gap, a plurality of spacers within the gap, and a sealing material joining the first substrate to the second substrate.
    Type: Application
    Filed: February 1, 2011
    Publication date: June 30, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Eugene E. Fike, III, Joyce H. Wu, Jasper Lodewyk Steyn, Jignesh Gandhi
  • Publication number: 20110148948
    Abstract: A method of operating a display including loading image data to pixels in multiple rows of pixels in an array of pixels during a data loading phase, actuating the pixels in the multiple rows during an update phase, and illuminating at least one lamp during an lamp illumination phase to illuminate the actuated pixels to form an image on the display, in which each of the loading, actuating and illuminating phases partially overlap in time.
    Type: Application
    Filed: February 1, 2011
    Publication date: June 23, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Jignesh Gandhi, Jasper Lodewyk Steyn, John J. Fijol, Roger W. Barton, Stephen R. Lewis, Abraham McAllister, Nesbitt W. Hagood
  • Publication number: 20110142593
    Abstract: A method of validating a wind turbine including a rotor includes intentionally inducing a loading imbalance to the rotor. The method also includes measuring the loading imbalance induced to the rotor, transmitting a signal representative of the measured loading imbalance to a calibration module, and at least one of detecting an error and calibrating at least one component of the wind turbine based on the signal.
    Type: Application
    Filed: May 28, 2010
    Publication date: June 16, 2011
    Inventors: Till Hoffmann, Gert Torbohm, Jignesh Gandhi, Robert Peter Slack, Kirk Gee Pierce
  • Publication number: 20110122474
    Abstract: Display devices incorporating light modulators are disclosed along with methods of manufacturing such devices. According to some aspects of the invention, a control matrix for controlling light modulators of a display includes a light absorbing layer that includes a material having a substantially light absorbing property.
    Type: Application
    Filed: January 5, 2011
    Publication date: May 26, 2011
    Applicant: Pixtronix, Inc.
    Inventors: Richard S. Payne, Je Hong Kim, Jignesh Gandhi, Mark B. Andersson, Javier Villarreal
  • Patent number: 7927654
    Abstract: The invention relates to methods of manufacturing display devices which include the steps of depositing a layer of a dielectric material directly on a substantially transparent substrate, depositing a layer of metal directly on top of the dielectric material, forming a plurality of apertures in the layer of metal, forming a control matrix on top of the metal layer, and forming a plurality of light-modulating shutter assemblies on top of and in electrical communication with the control matrix such that the control matrix controls the light modulation functionality of the plurality of shutter assemblies.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: April 19, 2011
    Assignee: Pixtronix, Inc.
    Inventors: Nesbitt W. Hagood, Jasper Lodewyk Steyn, Roger W. Barton, John J. Fijol, Jignesh Gandhi
  • Patent number: 7876489
    Abstract: A display includes an array of light modulators that define a display plane, a light guide and front- and rear-facing reflective surfaces. The light guide includes a plurality of geometric light redirectors, and at least 50% of the light guide's rear surface is parallel to the display plane. The rear-facing reflective surface is parallel to the display plane and includes a plurality of apertures.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: January 25, 2011
    Assignee: Pixtronix, Inc.
    Inventors: Jignesh Gandhi, Nesbitt W. Hagood, Roger W. Barton
  • Patent number: 7852546
    Abstract: The invention relates to methods and apparatus for forming a display apparatus. According to one aspect of the invention, the display apparatus includes a first substrate having an aperture layer formed thereon, a light guide for guiding light towards the aperture layer, a plurality of MEMS light modulators for modulating light passing through the aperture layer from the light guide, and a spacer substantially surrounding the light guide for keeping the light guide and the first substrate a predetermined distance apart from one another, thereby forming a gap between the first substrate and the light guide. Alternatively or in addition, the first substrate may have a control matrix formed thereon.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: December 14, 2010
    Assignee: Pixtronix, Inc.
    Inventors: John J. Fijol, Jignesh Gandhi, Mark J. Shufelt
  • Publication number: 20100188443
    Abstract: The invention relates to methods and apparatus for feedback control of image and color quality in a direct-view MEMS display apparatus. The display apparatus includes a lamp capable of providing light, a sensor capable of detecting information indicative of characteristics of light provided by the lamp and outputting a sensor signal based at least partially on the information, and control circuitry for controlling illumination of the lamp based at least partially on the sensor signal.
    Type: Application
    Filed: January 18, 2008
    Publication date: July 29, 2010
    Applicant: Pixtronix, Inc
    Inventors: Stephen R. Lewis, Jignesh Gandhi, John J. Fijol, Abraham McAllister
  • Patent number: 7746529
    Abstract: This invention relates to display apparatuses having an array of light modulators and a plurality of spacers distributed within the interior of the array. The display apparatus may also include a reflective aperture layer disposed on a front facing surface of a substrate included in the display apparatus.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: June 29, 2010
    Assignee: Pixtronix, Inc.
    Inventors: Nesbitt W. Hagood, Jasper Lodewyk Steyn, Richard S. Payne, Jignesh Gandhi, John J. Fijol, Roger W. Barton, Eugene E. Fike, III
  • Patent number: 7675665
    Abstract: This invention relates to display apparatuses having an array of light modulators and a plurality of apertures formed in a layer of material. Each light modulator corresponds to one or more apertures and has a portion which may overlap a corresponding aperture, where the size of the overlap is proportional to a distance between the array and the layer of material.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: March 9, 2010
    Assignee: Pixtronix, Incorporated
    Inventors: Nesbitt W. Hagood, Jasper Lodewyk Steyn, Richard S. Payne, Jignesh Gandhi, John J. Fijol, Roger W. Barton, Eugene E. Fike, III
  • Publication number: 20090257245
    Abstract: Improved apparatus and method for collecting and directing light from a source via a light guide and modulated display assembly in an efficient manner through the design and use of prismatic optical structures, diffusers and/or light redirectors.
    Type: Application
    Filed: October 24, 2008
    Publication date: October 15, 2009
    Applicant: Pixtronix, Inc.
    Inventors: Je Hong Kim, Jignesh Gandhi
  • Publication number: 20090244678
    Abstract: Display devices incorporating shutter-based light modulators are disclosed along with methods of manufacturing such devices. The methods are compatible with thin-film manufacturing processes known in the art and result in displays having lower power-consumption.
    Type: Application
    Filed: June 11, 2009
    Publication date: October 1, 2009
    Applicant: Pixtronix, Inc.
    Inventors: Nesbitt W. Hagood, IV, Jasper Lodewyk Steyn, Timothy J. Brosnihan, Jignesh Gandhi, John J. Fijol, Richard S. Payne, Roger Barton
  • Publication number: 20090103164
    Abstract: The invention relates to methods and apparatus for forming a display apparatus. According to one aspect of the invention, the display apparatus includes a first substrate having an aperture layer formed thereon, a light guide for guiding light towards the aperture layer, a plurality of MEMS light modulators for modulating light passing through the aperture layer from the light guide, and a spacer substantially surrounding the light guide for keeping the light guide and the first substrate a predetermined distance apart from one another, thereby forming a gap between the first substrate and the light guide. Alternatively or in addition, the first substrate may have a control matrix formed thereon.
    Type: Application
    Filed: October 19, 2007
    Publication date: April 23, 2009
    Applicant: Pixtronix, Inc.
    Inventors: John J. Fijol, Jignesh Gandhi, Mark J. Shufelt
  • Patent number: 7502159
    Abstract: This invention relates to display apparatuses having an array of light modulators and a plurality of apertures formed in a layer of material. Each light modulator corresponds to one or more apertures and has a portion which may overlap a corresponding aperture, where the size of the overlap is proportional to a distance between the array and the layer of material.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: March 10, 2009
    Assignee: Pixtronix, Inc.
    Inventors: Nesbitt W. Hagood, IV, Jasper Lodewyk Steyn, Richard S. Payne, Jignesh Gandhi, John J. Fijol, Roger W. Barton
  • Publication number: 20080278798
    Abstract: This invention relates to display apparatuses having an array of light modulators and a plurality of spacers distributed within the interior of the array. The display apparatus may also include a reflective aperture layer disposed on a front facing surface of a substrate included in the display apparatus.
    Type: Application
    Filed: October 19, 2007
    Publication date: November 13, 2008
    Applicant: Pixtronix, Inc.
    Inventors: Nesbitt W. Hagood, Jasper Lodewyk Steyn, Richard S. Payne, Jignesh Gandhi, John J. Fijol, Roger W. Barton, Eugene E. Fike, III