Patents by Inventor Zhachui Yang

Zhachui Yang 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).

  • Recycling backlights with semi-specular components
    Patent number: 8608363
    Abstract: A hollow light-recycling backlight has a “semi-specular” component providing a balance of specularly and diffusely reflected light improving the uniformity of the light output. The component may be arranged on the reflectors (1021), (1014) or inside the cavity (1016). This balance is achieved by designing the component's “transport ratio” defined by (F?B)/(F+B), (F and B are the amounts of incident light scattered forwards and backwards respectively by the component in the plane of the cavity) to lie in a certain range. Furthermore, the product of the front and back reflector “hemispherical” reflectivities should also lie in a given range. Alternatively, the “cavity transport value”, a measure of how well the cavity can spread injected light from the injection point to distant points in the cavity should lie in a further range and the “hemispherical” reflectivity of the back reflector should be >0.7.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: December 17, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Michael F. Weber, Timothy J. Nevitt, John A. Wheatley, Rolf W. Biernath, David G. Freier, Gilles J. Benoit, Charles D. Hoyle, Andrew J. Ouderkirk, Zhachui Yang
  • RECYCLING BACKLIGHTS WITH SEMI-SPECULAR COMPONENTS
    Publication number: 20100238686
    Abstract: A hollow light-recycling backlight has a “semi-specular” component providing a balance of specularly and diffusely reflected light improving the uniformity of the light output. The component may be arranged on the reflectors (1021), (1014) or inside the cavity (1016). This balance is achieved by designing the component's “transport ratio” defined by (F?B)/(F+B), (F and B are the amounts of incident light scattered forwards and backwards respectively by the component in the plane of the cavity) to lie in a certain range. Furthermore, the product of the front and back reflector “hemispherical” reflectivities should also lie in a given range. Alternatively, the “cavity transport value”, a measure of how well the cavity can spread injected light from the injection point to distant points in the cavity should lie in a further range and the “hemispherical” reflectivity of the back reflector should be >0.7.
    Type: Application
    Filed: May 19, 2008
    Publication date: September 23, 2010
    Inventors: Michael F. Weber, Timothy J. Nevitt, John A. Wheatley, Rolf W. Biernath, David G. Freier, Gilles J. Benoit, Charles D. Hoyle, Adrew J. Ouderkirk, Zhachui Yang