Oji Holdings Corporation

Tdk Corporation

Yoshikazu Fujishiro

Masahiro Nakata

Tadakazu Ishiwata

Yoshimune Okuyama

Akihiro Kakehi

Taro Miura

Takaya Ishigaki

Hiraku Harada

Takeshi Tominaga

Michiko Sueyoshi

Katsuyuki Moritaka

Kazuyuki Hiate

A biaxially stretched polypropylene film which has a thickness of from 1.0 μm to 3.5 μm, a tensile fracture stress at 135° C. of 70 MPa or more in a first direction, and a difference between the tensile fracture stress at 125° C. in the first direction and the tensile fracture stress at 135° C. in the first direction of from 0 MPa to 15 MPa (inclusive).

Biaxially stretched polypropylene film, metallized film, metallized film roll and film capacitor

In a metallized film, n electrode portions, which are metal deposition portions, are formed in parallel on one surface of a dielectric filmhaving a film width corresponding to n capacitor elements, n being an even number of 2 or more. Each electrode portionis provided with a plurality of inclined marginsand, which are metal non-deposition portions extending at an angle with respect to a film width direction, at a regular interval in a film length direction. Across a center line Lc virtually extending in the film length direction at the center in the film width direction, the inclined marginsof the electrode portionlocated on one side in the film width direction, and the inclined marginsof the electrode portionlocated on the other side in the film width direction are inclined in opposite directions so as to be line-symmetric with respect to the center line Lc.

Metallized film, metallized film roll, plate roll

The present invention relates to a biaxially stretched polypropylene film for capacitor. The biaxially stretched polypropylene film for capacitor of the present invention can suppress an increase in tan &#x3b4; and a decrease in the electrostatic capacitance even when the capacitor is used at a high voltage and an elevated temperature for a long duration.

Biaxially stretched polypropylene film for capacitors, metallized film, and capacitor

The covering sheet includes at least one magnetic material layer made of a resin compound having an oxide magnetic material or a metal magnetic material mixed therein, a ground conductor layer laminated on one surface of the magnetic material layer, and a plurality of via holes for passing conducting unit for grounding the ground conductor layer, or includes a laminate consisting of at least one magnetic material layer made of a resin compound having an oxide magnetic material or a metal magnetic material mixed therein and at least one dielectric layer having a permittivity lower than that of the magnetic material layer, and a ground conductor layer laminated on one surface of the laminate.

Covering sheet, triplate line using the sheet, signal bus for computer using the sheet and covering structure of electronic circuit using the sheet

The invention decreases crosstalk due to capacitive coupling between through type capacitor elements in a multilayer through type capacitor array. On dielectric sheets between electrodes, which constitute a multi capacitor array, through-holes filled with conductive materials are formed, where a central conductor is not present. By electrically connecting conductive materials filled in the through-holes, electrostatic shielding is provided between the through type capacitor elements. Electrical connection is achieved through conductive layers formed outside or inside the through type capacitor elements.

Growing community of inventors

Tokyo, Japan

Yoshikazu Fujishiro