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:
Jul. 08, 2025
Filed:
Jun. 18, 2020
United Microelectronics Corp., Hsin-Chu, TW;
Chih-Kai Hsu, Tainan, TW;
Chien-Hung Chen, Taipei, TW;
UNITED MICROELECTRONICS CORP., Hsin-Chu, TW;
Abstract
A static random access memory (SRAM) includes a substrate having a first active region and a second active region adjacent to the first active region. A first gate structure is disposed on the substrate and across the first active region and the second active region. A second gate structure is adjacent to a first side of the first gate structure. A first lower contact structure is disposed on the first active region and adjacent to a second side of the first gate structure. A first upper contact structure is disposed on and in direct contact with the first lower contact structure. A top surface of the first lower contact structure and a sidewall of the first upper contact structure comprise a step profile therebetween.