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:
Apr. 10, 1990
Filed:
Mar. 14, 1989
Applicant:
Inventors:
Israel A Lesk, Phoenix, AZ (US);
Clarence A Lund, Phoenix, AZ (US);
Thomas C Smith, Scottsdale, AZ (US);
Assignee:
Motorola Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 20 ; 437 43 ; 437173 ; 437228 ; 437923 ; 156643 ;
Abstract
Charge on a floating gate of a semiconductor device structure is neutralized by illuminating the structure with a high intensity light during process steps that inject charge. The light provides for the formation of electrons, or free carriers, in the semiconductor substrate. The electrons facilitate tunneling which prevents dielectric degradation or rupture.