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:
Aug. 21, 2001
Filed:
Sep. 03, 1998
Wataru Sato, Yokohama, JP;
Yoshiaki Asao, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a DRAM-logic embedded integrated circuit in which a DRAM including trench capacitors of the deep trench structure and a logic circuit are mixedly formed in a semiconductor substrate, a plurality of capacitors of the deep trench structure are provided in the logic circuit portion. The plurality of capacitors are connected in parallel by wiring portions, whereby a plurality of capacitor blocks are formed. Between the respective capacitor blocks, there are provided fuse elements which selectively connect the respective wiring portions to each other or selectively separate them from each other to thereby vary the capacitance value of the capacitance blocks. These fuse elements are selectively cut off depending on the capacitance value of the capacitors required in view of the circuit design.