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:
Feb. 19, 2008
Filed:
Apr. 21, 2006
Heng-yuan Lee, Tainan County, TW;
Ching-yuan Ho, Tainan County, TW;
Lurng-shehng Lee, Hsinchu County, TW;
Chieh-shuo Liang, Kaohsiung, TW;
Heng-Yuan Lee, Tainan County, TW;
Ching-Yuan Ho, Tainan County, TW;
Lurng-Shehng Lee, Hsinchu County, TW;
Chieh-Shuo Liang, Kaohsiung, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A cylindrical capacitor comprising at least a substrate, a cylindrical bottom electrode, a structure layer, a top electrode and a capacitor dielectric layer is provided. The substrate has several plugs. The cylindrical bottom electrodes are disposed on the substrate and electrically connected to the respective plugs. The structure layer surrounds the periphery of each cylindrical bottom electrode. The structure layers that surround the two opposing cylindrical bottom electrodes have no mutual contact while the structure layers that surround two neighboring cylindrical bottom electrodes contact each other. Furthermore, the top electrodes cover the respective cylindrical bottom electrodes and the capacitor dielectric layer is disposed between each top electrode and corresponding cylindrical bottom electrode. Due to the structure layers, the mechanical strength of the whole cylindrical capacitor is improved and the density of the capacitor can be increased.