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:
May. 12, 1987
Filed:
Feb. 01, 1985
Applicant:
Inventors:
Bert L Allen, Los Altos, CA (US);
A Rahim Forouhi, San Jose, CA (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 54 ; 357 235 ; 357 52 ;
Abstract
An erasable programmable read only memory (EPROM) integrated circuit device 2 having a topside passivation layer 9 of silicon nitride which is transparent to ultraviolet radiation is disclosed. The refractive index of the silicon nitride film is in the range of 1.93.+-.0.03.