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:
Nov. 06, 2018
Filed:
May. 14, 2017
Powerchip Technology Corporation, Hsinchu, TW;
Shyng-Yeuan Che, Hsinchu County, TW;
Wen-Yi Wong, Kinmen County, TW;
Powerchip Technology Corporation, Hsinchu, TW;
Abstract
A method for fabricating a multi-layer, crown-shaped MIM capacitor is provided. A base having therein a conductive region within a capacitor-forming region is formed. An IMD layer is deposited on the base to cover the capacitor-forming region. A capacitor trench is formed within the capacitor-forming region. The capacitor trench penetrates through the IMD layer, thereby exposing a portion of the conductive region. A concentric capacitor lower electrode structure is formed within the capacitor trench. The concentric capacitor lower electrode structure includes a first electrode and a second electrode surrounded by the first electrode. The first electrode is in direct contact with the conductive region. A conductive supporting pedestal is formed within the capacitor trench for fixing and electrically connecting bottom portions of the first and second electrodes. A capacitor dielectric layer conformally lining the first and second electrodes and a top surface of the conductive supporting pedestal is formed.