Patents by Inventor Tsutomi Ishii

Tsutomi Ishii 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).

  • SEMICONDUCTOR LIGHT EMITTING DEVICE, AND BACKLIGHT AND DISPLAY DEVICE COMPRISING THE SEMICONDUCTOR LIGHT EMITTING DEVICE
    Publication number: 20100102340
    Abstract: The present invention provides a semiconductor light emitting device comprising a light intensity difference reducing layer provided between an ultraviolet semiconductor light emitting element and a wavelength converting material layer, and a backlight and a display device comprising the semiconductor light emitting device. The semiconductor light emitting device is an LED light emitting device which has improved uniformity of emitted light and reduced non-uniformity of brightness and chromaticity of emitted light.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 29, 2010
    Inventors: Yasumasa Ooya, Ryo Sakai, Hajime Takeuchi, Tsutomi Ishii