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:
Feb. 16, 1988
Filed:
Jun. 20, 1986
Applicant:
Inventors:
Assignee:
SGS Microelettronica S.p.A., Catania, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ; H01C / ; B05D / ; B44C / ;
U.S. Cl.
CPC ...
338226 ; 2961 / ; 156653 ; 156657 ; 338308 ; 427103 ;
Abstract
This method of making an implanted resistor comprises the steps of implanting the resistor with ordinary techniques and deposition over the implanted resistor of a polysilicon layer having a set thickness and fully covering the resistor. Thus, the resulting resistor is unaffected by any subsequent thermal treatments and its value remains constant irrespective of any high potential metal layers or connections crossing it. The method affords in particular resistive values of the order of 1 kOhms/square.