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.

Date of Patent:
May. 09, 2023

Filed:

Feb. 10, 2021
Applicant:

X-fab Global Services Gmbh, Erfurt, DE;

Inventors:

Guido Janssen, Erfurt, DE;

Klaus Heinrich, Erfurt, DE;

Tillmann Walther, Dresden, DE;

Xuezhou Cao, Plymouth, GB;

Jee Chang Lai, Kuching, MY;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C 17/00 (2006.01); H01C 1/16 (2006.01); H01L 27/08 (2006.01);
U.S. Cl.
CPC ...
H01C 17/00 (2013.01); H01C 1/16 (2013.01); H01L 27/0802 (2013.01);
Abstract

A method of forming a resistor circuit, the method comprising forming a first resistor comprising a first type of resistor, forming a second resistor comprising a second type of resistor, the first type of resistor being different from the second type of resistor and simultaneously doping a first part of the first resistor and a second part of the second resistor, the first resistor and the second resistor being configured such that doping of the first part of the first resistor and the second part of the second resistor defines a temperature coefficient of the first resistor and a temperature coefficient of the second resistor, wherein the temperature coefficient of the first resistor and the temperature coefficient of the second resistor have opposite signs.


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