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04/24/08 | 28 views | #20080094776 | Prev - Next | USPTO Class 361 | About this Page  361 rss/xml feed  monitor keywords

Cylindrical capacitor

USPTO Application #: 20080094776
Title: Cylindrical capacitor
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. (end of abstract)
Agent: Jianq Chyun Intellectual Property Office - Taipei, TW
Inventors: Heng-Yuan Lee, Ching-Yuan Ho, Lurng-Shehng Lee, Chieh-Shuo Liang
USPTO Applicaton #: 20080094776 - Class: 361301200 (USPTO)


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Capacitors with high energy storage density and low esr
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