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:
Dec. 09, 2025
Filed:
Jan. 09, 2023
United Microelectronics Corp., Hsin-Chu, TW;
UNITED MICROELECTRONICS CORP., Hsin-Chu, TW;
Abstract
A radiofrequency filter includes a substrate, an isolation structure, an electrically conductive structure, a spacer structure, a dielectric layer, a patterned electrically conductive film, a first contact structure, and a second contact structure. The isolation structure is disposed in the substrate. The electrically conductive structure is disposed on the isolation structure. The spacer structure is disposed on the substrate and located on a sidewall of the electrically conductive structure. The dielectric layer is disposed on the electrically conductive structure. The patterned electrically conductive film is disposed on the dielectric layer. At least a part of the dielectric layer is located between the electrically conductive structure and the patterned electrically conductive film in a vertical direction. The first contact structure and the second contact structure are disposed on and electrically connected with the patterned electrically conductive film.