Patents by Inventor John C. Branca

John C. Branca 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).

  • Polarizers for use with liquid crystal displays
    Patent number: 6630970
    Abstract: A liquid crystal display structure includes a liquid crystal display cell having a front surface and a back surface. One or more intrinsic polarizers lacking protective coatings thereon, such as K-type polarizers and thin KE polarizer sheets, are disposed adjacent to the front and back surfaces of the liquid crystal display cell. Alternatively, thinly cladded or encased iodine polarizers are disposed adjacent to the front and back surfaces of the liquid crystal display cell. The liquid crystal display structure may be used in conjunction with other optical display elements to enhance the brightness and contrast of the liquid crystal display.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: October 7, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Giorgio Trapani, William K. Smyth, Philip Ralli, James Gordon, John Cael, John C. Branca, David M. Foresyth, Atsushi Suzuki, William Pugh
  • Polarizers for use with liquid crystal displays
    Publication number: 20030001987
    Abstract: A liquid crystal display structure includes a liquid crystal display cell having a front surface and a back surface. One or more intrinsic polarizers lacking protective coatings thereon, such as K-type polarizers and thin KE polarizer sheets, are disposed adjacent to the front and back surfaces of the liquid crystal display cell. Alternatively, thinly cladded or encased iodine polarizers are disposed adjacent to the front and back surfaces of the liquid crystal display cell. The liquid crystal display structure may be used in conjunction with other optical display elements to enhance the brightness and contrast of the liquid crystal display.
    Type: Application
    Filed: July 2, 2001
    Publication date: January 2, 2003
    Inventors: Giorgio Trapani, William K. Smyth, Philip Ralli, James Gordon, John Cael, John C. Branca, David M. Foresyth, Atsushi Suzuki, William Pugh
  • Chromatically-adjusted holographically illuminated image-providing display element
    Patent number: 6122079
    Abstract: Reflective image-providing displays illuminated with chromatically-adjusted holographically diffused light are provided. In one particular and preferred embodiment, a liquid crystal display component is presented comprising a liquid crystal display element backed with a reflective transmission holographic diffuser. Chromatic adjustment is effected by the inclusion in said liquid crystal display component of a compensatory filter layer of relatively low density designed to restore the ambient color balance of input light, the balance being otherwise upset by transit through said liquid crystal display element. Achromatically illuminated images of good contrast are displayed and viewed from the liquid crystal display component under ambient lighting conditions.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: September 19, 2000
    Assignee: Polaroid Corporation
    Inventors: John C. Branca, Jr., Philip J. Ralli, Michael M. Wenyon