Patents by Inventor Djamshid Tizabi

Djamshid Tizabi 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).

  • Process and machinery for step-and-repeat vacuum-deposition of large-area thin-film-electronics matrix-circuits on monolithic glass panes through small perforated metal masks
    Patent number: 5186975
    Abstract: Active matrix addressed liquid crystal TV sets configurated in the way described by A. G. Fischer in U.S. Pat. No. 3,840,695 can be enlarged to monolithic square-meter-sized wall TV panels. The large-area thin-film-electronic matrix circuit needed to address the superimposed liquid crystal layer can be vacuum-deposited from a multiple source evaporator onto one coherent glass pane through a number of small reticulated perforated sheet metal masks which are held successively against a chosen reticle of the large glass pane, in exact registration with each other and neighbouring reticles. The large glass pane must be precision-shifted in X-Y-reticle-steps for repeated vacuum depositions, in exact registration. The machinery required is described.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: February 16, 1993
    Assignee: Enichem S.p.A.
    Inventors: Djamshid Tizabi, Albert G. Fischer