The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1978
Filed:
Dec. 20, 1976
Applicant:
Inventors:
Denis J McGreivy, Laguna Beach, CA (US);
Henry T Peterson, Irvine, CA (US);
Alex M Leupp, Costa Mesa, CA (US);
Assignee:
Hughes Aircraft Company, Culver City, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
3403 / ; 350333 ; 357 41 ; 357 52 ;
Abstract
A liquid crystal display addressable by a backplate semiconductor MOSFET switching matrix is made light insensitive by ion implanting the backplate around the MOSFETs to prevent the formation of photon generated inversion layers and by extending the reflective back electrodes over the MOSFETs to prevent incident light from striking those areas of the backplate which are not protected by ion implantation.