Patents by Inventor Herman Witters

Herman Witters 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).

  • Planarization of an image detector device for improved spectral response
    Publication number: 20050110050
    Abstract: An image sensor device (100) is described comprising a semiconductor substrate (1), a MOS-based pixel structure and a planarization layer (30) on top. The planarization layer (30) is provided to avoid lensing due to the roughness of the pixel structure surface. The planarization layer (30) may be further optimized by adapting its thickness and refractive index to obtain anti-reflective coating properties for some regions in the image sensor device. This allows increasing the quantum efficiency and the spectral response of the image sensor device significantly.
    Type: Application
    Filed: November 20, 2003
    Publication date: May 26, 2005
    Inventors: Tom Walschap, Herman Witters, Danny Scheffer, Jan Bogaerts, Bart Dierickx