Industrial Technology Research Institute

Chun-Kun Wu

Chang-Sheng Chen

Ching-Liang Weng

Uei-Ming Jow

Ying-Jiunn Lai

Pei-Shen Wei

Pel-Shen Wei

Wei-Ming Jow

The present invention describes an intermediate for use in a capacitive printed circuit board (PCB), which relates to a capacitive apparatus and manufacturing method for a built-in capacitor with a non-symmetrical electrode used to reduce inaccuracy of the error compression alignment on laminates. The invention employs a plurality of different sized metal laminates stacked for a built-in capacitor to achieve a high-precise capacitor PCB. More particularly, the invention can raise the capability of noise-immunity of a capacitive PCB applied to high frequency/speed modules and systems, and also provides precise capacitance to regular circuit design for the need of compact package and high-precise capacitance in the future.

Capacitive apparatus and manufacturing method for a built-in capacitor with a non-symmetrical electrode

An embedded microelectronic capacitor incorporating at least one ground shielding layer is provided which includes an upper ground shielding layer that has an aperture therethrough; an electrode plate positioned spaced-apart from the upper ground shielding layer that has a via extending upwardly away from the electrode plate through the aperture in the upper ground shielding layer providing electrical communication to the electrode plate without shorting to the upper ground shielding layer; a middle ground shielding layer positioned in the same plane of the electrode plate, surrounding while spaced-apart from the electrode plate at a predetermined distance; a lower ground shielding layer positioned spaced-apart from the electrode plate in an opposing relationship to the upper ground shielding layer; and a dielectric material embedding the upper ground shielding layer; the middle ground shielding layer and the lower ground shielding layer.

Embedded microelectronic capacitor incorporating ground shielding layers and method for fabrication

An embedded microelectronic capacitor equipped with geometrically-centered electrodes which includes an upper electrode plate of a first polarity; a middle electrode plate of a second polarity opposite to the first polarity; at least one lower electrode plate of the first polarity in electrical communication with the upper electrode plate through a center via. The center via is positioned at a distance from a geometric center of the middle electrode plate of not larger than 50% of the diameter of the plate, and preferably not larger than 30% of the diameter.

Embedded microelectronic capacitor equipped with geometrically-centered electrodes and method of fabrication

Growing community of inventors

Yunlin Hsien, Taiwan

Chun-Kun Wu