Gifu, Japan
Gifu, Japan

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Patent
Ibiden Co. | Date: 2016-08-18

A printed wiring board includes a build-up layer including insulating and conductor layers, pads formed on surface of the build-up layer and including first pads to connect an electronic component and second pads to connect an external wiring board onto the surface of the build-up layer, a mold resin layer formed on the surface of the build-up layer such that the mold layer is covering the surface of the build-up layer and has a cavity exposing the first pads and openings exposing the second pads, and conductor posts formed in the openings and including plating material such that the posts are connected to the second pads. The plating material of the posts includes electroless plating layer and electrolytic plating layer, and the posts are formed such that each post has an end surface exposed from surface of the mold layer on the opposite side with respect to the second pads.


A printed wiring board includes a buildup wiring layer including resin insulation layers and conductive layers such that the conductive layers are laminated on the resin insulation layers, respectively, first pads formed in a center portion of a first surface of the buildup wiring layer and positioned to connect an electronic component, second pads formed on a periphery portion of the first surface of the buildup wiring layer and positioned to connect an external wiring board, a solder layer including a plating material and formed on the first pads such that the solder layer is formed on each of the first pads, conductive posts including a plating material and formed on the second pads, respectively, and a seed layer including first seed layer portions formed between the first pads and the solder layer and second seed layer portions formed between the second pads and the conductive posts.


A printed wiring board includes a first circuit substrate having first and second surfaces, and a second circuit substrate having third and fourth surfaces such that the first substrate is laminated on the third surface and that the first and third surfaces are opposing each other. The second substrate includes a conductor layer, a first insulating layer including reinforcing material and formed on the conductor layer, and mounting via conductors formed in the first insulating layer and connected to the conductor layer such that the second substrate has a mounting area on the third surface and that the mounting via conductors have via bottoms forming pads positioned to mount an electronic component in the mounting area, and the first substrate includes an insulating layer which does not contain reinforcing material and has an opening through the insulating layer and exposing the via bottoms forming the pads in the mounting area.


A printed wiring board includes a first circuit substrate having a first surface and a second surface on the opposite side, and a second circuit substrate having a third surface and a fourth surface on the opposite side such that the first circuit substrate is laminated on the third surface and that the first surface and the third surface are opposing each other. The second circuit substrate has a mounting area on the third surface and includes pads positioned to mount an electronic component in the mounting area and a connection wire structure connected to the pads, and the first circuit substrate includes through-hole conductors extending from the first surface to the second surface and connected to the pads through the connection wire structure and has an opening portion formed through the first circuit substrate such that the opening portion is exposing the pads formed in the mounting area.


Patent
Ibiden Co. | Date: 2017-01-19

A honeycomb filter includes a plurality of cells and porous cell walls. Exhaust gas is to flow through the plurality of cells. The plurality of cells include exhaust gas introduction cells and exhaust gas emission cells. The honeycomb filter has a round cross sectional shape. Each of the exhaust gas emission cells is adjacently surrounded fully by the exhaust gas introduction cells. In the cross section, the exhaust gas introduction cells and the exhaust gas emission cells each have a polygonal shape. In the cross section, a side forming a cross sectional shape of each of the first exhaust gas introduction cells faces one of the exhaust gas emission cells, a side forming a cross sectional shape of each of the second exhaust gas introduction cells faces one of the exhaust gas emission cells.


Patent
Ibiden Co. | Date: 2016-10-31

A printed wiring board includes a multilayer body, a first wiring layer formed on first surface of the body and including first pads, a second wiring layer embedded into second surface of the body and including second and third pads, conductor posts formed on the third pads, and via conductors formed in the body and having diameter reducing toward the second surface of the body. Each third pad has metal foil formed thereon such that each post is formed on the foil, the second wiring layer is formed such that the second pads are positioned to connect an electronic component in central portion of the second surface of the body and the third pads are positioned to connect another board in outer edge portion of the second surface of the body, and the second pads are formed such that each second pad has exposed surface recessed from the second surface.


Patent
Ibiden Co. | Date: 2017-05-31

The present invention provides a honeycomb filter including a honeycomb fired body including porous cell partition walls, exhaust gas introduction cells each having an open end at an exhaust gas inlet side and a plugged end at an exhaust gas outlet side, exhaust gas emission cells each having an open end at the exhaust gas outlet side and a plugged end at the exhaust gas inlet side, and an outer wall on the periphery thereof. The cross-sectional shape of each exhaust gas introduction cell in a plane perpendicular to the longitudinal direction thereof is entirely uniform from the end at the exhaust gas inlet side to the end at the exhaust gas outlet side excluding the plugged portion. The cross-sectional shape of each exhaust gas emission cell in a plane perpendicular to the longitudinal direction thereof is entirely uniform from the end at the exhaust gas inlet side to the end at the exhaust gas outlet side excluding the plugged portion. The exhaust gas emission cells, except for the cells adjacent to the outer wall, are each adjacently surrounded fully by the exhaust gas introduction cells across the porous cell partition walls. The cells adjacent to the outer wall include the exhaust gas introduction cells and the exhaust gas emission cells. A substantial ratio of the number of the exhaust gas introduction cells to the number of the exhaust gas emission cells (exhaust gas introduction cells : exhaust gas emission cells) is 4:1. All the exhaust gas introduction cells, except for the cells adjacent to the outer wall, have the same cross-sectional area in a plane perpendicular to the longitudinal direction thereof, the cross-sectional area of each exhaust gas introduction cell being smaller than that of each exhaust gas emission cell in a plane perpendicular to the longitudinal direction thereof.


Patent
Ibiden Co. | Date: 2016-11-30

A printed wiring board includes a lowermost resin insulating layer, a first conductor layer formed on a first surface of the lowermost resin insulating layer, a conductor post formed in the lowermost resin insulating layer such that the conductor post has an upper surface facing the first surface and a lower surface on the opposite side with respect to the upper surface, a semiconductor element embedded in the lowermost resin insulating layer such that the semiconductor element has an electrode facing the first surface and is positioned on a second surface side of the lowermost resin insulating layer, and via conductors formed in the lowermost resin insulating layer and including a first via conductor and a second via conductor such that the first via conductor is connecting the first conductor layer and the conductor post and that the second via conductor is connecting the first conductor layer and the electrode.


Patent
Ibiden Co. | Date: 2017-05-31

The present invention provides a honeycomb filter including a honeycomb fired body including porous cell partition walls, exhaust gas introduction cells each having an open end at an exhaust gas inlet side and a plugged end at an exhaust gas outlet side, exhaust gas emission cells each having an open end at the exhaust gas outlet side and a plugged end at the exhaust gas inlet side, and an outer wall on the periphery thereof. The cross-sectional shape of each exhaust gas introduction cell in a plane perpendicular to the longitudinal direction thereof is entirely uniform from the end at the exhaust gas inlet side to the end at the exhaust gas outlet side excluding the plugged portion, and the cross-sectional shape of each exhaust gas emission cell in a plane perpendicular to the longitudinal direction thereof is entirely uniform from the end at the exhaust gas inlet side to the end at the exhaust gas outlet side excluding the plugged portion. The cross-sectional shape of each exhaust gas introduction cell in a plane perpendicular to the longitudinal direction thereof is a polygon. The exhaust gas emission cells, except for the cells adjacent to the outer wall, are each adjacently surrounded fully by the exhaust gas introduction cells across the porous cell partition walls. The cells adjacent to the outer wall include the exhaust gas introduction cells and the exhaust gas emission cells. The aperture ratio of the exhaust gas introduction cells is higher than the aperture ratio of the exhaust gas emission cells, and the cross-sectional area of each exhaust gas emission cell is larger than the cross-sectional area of each exhaust gas introduction cell. Among the sides forming the polygon, the number of sides facing the exhaust gas introduction cells across the cell partition walls is larger than the number of sides facing the exhaust gas emission cells across the cell partition walls.


Patent
Ibiden Co. | Date: 2017-05-31

The present invention provides a honeycomb filter including a honeycomb fired body including porous cell partition walls, exhaust gas introduction cells each having an open end at an exhaust gas inlet side and a plugged end at an exhaust gas outlet side, exhaust gas emission cells each having an open end at the exhaust gas outlet side and a plugged end at the exhaust gas inlet side, and an outer wall on the periphery thereof. The cross-sectional shape of each exhaust gas introduction cell in a plane perpendicular to the longitudinal direction thereof is entirely uniform from the end at the exhaust gas inlet side to the end at the exhaust gas outlet side excluding the plugged portion. The cross-sectional shape of each exhaust gas emission cell in a plane perpendicular to the longitudinal direction thereof is entirely uniform from the end at the exhaust gas inlet side to the end at the exhaust gas outlet side excluding the plugged portion. The exhaust gas emission cells, except for the cells adjacent to the outer wall, are each adjacently surrounded fully by the exhaust gas introduction cells across the porous cell partition walls; the cross-sectional area of each exhaust gas emission cell is larger than the cross-sectional area of each exhaust gas introduction cell. Provided that the hydraulic diameter is given by the following equation (1) and the area based on the given hydraulic diameter is given by the following equation (2), the ratio of the area based on the hydraulic diameter of an exhaust gas introduction cell to the cross-sectional area of the exhaust gas introduction cell is 0.95 to 0.98, and the ratio of the area based on the hydraulic diameter of an exhaust gas emission cell to the cross-sectional area of the exhaust gas emission cell is 0.7 to 0.9:

Loading Ibiden Co. collaborators
Loading Ibiden Co. collaborators