Abstract: A semiconductor device of an embodiment includes a semiconductor layer having a first plane, a second plane, and a through hole penetrating from the first plane to the second plane; an insulating layer on a side of the second plane of the semiconductor layer; a first conductive layer in the insulating layer; a silicon oxide layer on a side of the first plane and in the through hole; a silicon nitride layer provided on the side of the first plane and in the through hole, the silicon oxide layer being interposed between the silicon nitride layer and the semiconductor layer; and a second conductive layer on the side of the first plane and in the through hole, the silicon oxide layer and the silicon nitride layer being interposed between the second conductive layer and the semiconductor layer, and the second conductive layer electrically connected to the first conductive layer.

Abstract: A semiconductor device of an embodiment includes a semiconductor layer having a first plane, a second plane, and a through hole penetrating from the first plane to the second plane; an insulating layer on a side of the second plane of the semiconductor layer; a first conductive layer in the insulating layer; a silicon oxide layer on a side of the first plane and in the through hole; a silicon nitride layer provided on the side of the first plane and in the through hole, the silicon oxide layer being interposed between the silicon nitride layer and the semiconductor layer; and a second conductive layer on the side of the first plane and in the through hole, the silicon oxide layer and the silicon nitride layer being interposed between the second conductive layer and the semiconductor layer, and the second conductive layer electrically connected to the first conductive layer.

Abstract: The present invention aims to provide a manufacturing device for heat exchanger fins that is capable of adjusting for differences between a number of punches and a number of through-holes or cutaway portions in an actual product without causing a metal strip to sag or having punches punch the same positions twice.

Abstract: The present invention aims to provide a manufacturing device for heat exchanger fins that is capable of adjusting for differences between a number of punches and a number of through-holes or cutaway portions in an actual product without causing a metal strip to sag or having punches punch the same positions twice.

Abstract: A flattened tube fin manufacturing apparatus includes: a press apparatus; an inter-row slit apparatus forming metal strips of a product width that are arranged in the width direction; a first feeding apparatus feeding the metal strips cut by the inter-row slit apparatus downstream; a cutoff apparatus that cuts the metal strips formed by the inter-row slit apparatus into predetermined lengths to form flattened tube fins; and a second feeding apparatus that feeds the flattened tube fins downstream. The plurality of metal strips outputted from the inter-row slit apparatus advance into the cutoff apparatus after entering a downwardly sagging state. The flattened tube fin manufacturing apparatus further includes a control unit controlling a feeding amount of the second feeding apparatus based on a feeding amount of the first feeding apparatus.

Abstract: A flattened tube fin manufacturing apparatus includes: a press apparatus; an inter-row slit apparatus forming metal strips of a product width that are arranged in the width direction; a first feeding apparatus feeding the metal strips cut by the inter-row slit apparatus downstream; a cutoff apparatus that cuts the metal strips formed by the inter-row slit apparatus into predetermined lengths to form flattened tube fins; and a second feeding apparatus that feeds the flattened tube fins downstream. The plurality of metal strips outputted from the inter-row slit apparatus advance into the cutoff apparatus after entering a downwardly sagging state. The flattened tube fin manufacturing apparatus further includes a control unit controlling a feeding amount of the second feeding apparatus based on a feeding amount of the first feeding apparatus.