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:
Jun. 20, 1989
Filed:
Dec. 01, 1987
Mitsuru Murata, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A thick-film integrated circuit device comprises an insulating substrate, first and second conductors, formed on the insulating substrate by means of a thick-film forming method and spaced apart from each other, and a resistance-trimming resistor and a function-trimming resistor, both formed on the insulating substrate by means of the thick-film forming method. Both resistors are rectangular strips. The resistance-trimming resistor has two ends overlapping and thus electrically connected to the facing ends of the first and second conductors, respectively. The function-trimming resistor extends perpendicular to the second conductor, and has one end portion which extends at right angles to, overlaps and is therefore electrically coupled to the thin intermediate portion of the second conductor. A laser beam is applied onto the resistance-trimming resistor, while the resistance between those ends of the first and second conductors which face away from each other is being measured, thereby cutting a notch in the function-trimming resistor and thus greatly adjusting this resistance. A laser beam is applied onto the function-trimming resistor, thereby cutting a notch therein, cutting the resistor into two parts, and thus minutely adjusting the resistance between said ends of the first and second conductors.