Patents by Inventor Vincent Ricardo M. Daria

Vincent Ricardo M. Daria 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).

  • Patent number: 7235988
    Abstract: A method is disclosed that permits the generation of exclusive high-contrast images of semiconductor sites in an integrated circuit sample (19). It utilizes the one-photon optical beam-induced current (1P-OBIC) image and confocal reflectance image of the sample that are generated simultaneously from one and the same excitation (probe) light beam that is focused on the sample (19). A 1P-OBIC image is a two-dimensional map of the currents induced by the beam as it is scanned across the circuit surface. 1P-OBIC is produced by an illuminated semiconductor material if the excitation photon energy exceeds the bandgap. The 1P-OBIC image has no vertical resolution because 1P-OBIC is linear with the excitation beam intensity. The exclusive high-contrast image of semiconductor sites is generated by the product of the 1P-OBIC image and the confocal image. High-contrast image of the metal sites are also obtained by the product of the complementary OBIC image and the same confocal image.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: June 26, 2007
    Inventors: Caesar A. Saloma, Jelda Jayne C. Miranda, Vincent Ricardo M. Daria