Abstract:
A circuit for converting an A.C. power supply voltage into a D.C. voltage, including: a first branch capable of providing a first power level; and a second parallel branch capable of providing a second power level greater than the first one, the second branch including a bidirectional activation switch.
Abstract:
A mesa-type bidirectional Shockley diode delimited on its two surfaces by a peripheral groove filled with a glassivation including a substrate of a first conductivity type; a layer of the second conductivity type on each side of the substrate; a region of the first conductivity type in each of the layers of the second conductivity type; a buried region of the first conductivity type under each of the regions of the first conductivity type, at the interface between the substrate and the corresponding layer of the second conductivity type, each buried region being complementary in projection with the other; and a peripheral ring under the external periphery of each of the glassivations, of same doping profile as the buried regions.
Abstract:
A case for fuel cells including an upper plate formed of a stack of a first insulating board, portions of a first conductive layer, a second insulating board, and a second conductive layer, this stack including windows, fuel cells being placed under the first insulating board at the level of the windows to obstruct them, the stack further comprising first openings filled with a heat-transmitting material forming a contact between the periphery of the fuel cells and the second conductive layer.
Abstract:
A distributed coupler including a first line intended to convey a radio signal between its two ends and a second line intended to sample, by coupling, part of the signal, wherein: one of the lines is formed on an insulating substrate; and the other line is formed in a lead frame supporting the substrate, one line being above the other.
Abstract:
An asymmetrical bidirectional protection component formed in a semiconductor substrate of a first conductivity type, including: a first implanted area of the first conductivity type; a first epitaxial layer of the second conductivity type on the substrate and the first implanted area; a second epitaxial layer of the second conductivity type on the first epitaxial layer, the second layer having a doping level different from that of the first layer; a second area of the first conductivity type on the outer surface of the epitaxial layer, opposite to the first to area; a first metallization covering the entire lower surface of the substrate; and a second metallization covering the second area.
Abstract:
A high-voltage vertical power component including a lightly-doped semiconductor substrate of a first conductivity type and, on the side of an upper surface, an upper semiconductor layer of the second conductivity type which does not extend all the way to the component periphery, wherein the component periphery includes, on the lower surface side, a ring-shaped diffused region of the second conductivity type extending across from one third to half of the component thickness; and on the upper surface side, an insulated ring-shaped groove crossing the substrate to penetrate into an upper portion of ring-shaped region.
Abstract:
A device comprising a chamber in which a hydrogen-air or methanol-air type fuel cell is arranged, the chamber including an upper wall in which an opening is formed, a lower wall on which the cell is arranged so that the surface of exposure to air of the cell faces the upper wall, and a fan arranged in the opening.
Abstract:
A method for encapsulating electronic components, including the steps of: forming, in a first surface of a semiconductor wafer, electronic components; forming, on the first surface, an interconnection stack including conductive tracks and vias separated by an insulating material; forming first and second bonding pads on the interconnection stack; thinning down the wafer, except at least on its contour; filling the thinned-down region with a first resin layer; arranging at least one first chip on the first bonding pads and forming solder bumps on the second bonding pads; depositing a second resin layer covering the first chips and partially covering the solder bumps; bonding an adhesive strip on the first resin layer; and scribing the structure into individual chips.
Abstract:
Disclosed is a composition for ferroelectric thin film formation which is used in the formation of a ferroelectric thin film of one material selected from the group consisting of PLZT, PZT, and PT. The composition for ferroelectric thin film formation is a liquid composition for the formation of a thin film of a mixed composite metal oxide formed of a mixture of a composite metal oxide (A) represented by general formula (1): (PbxLay)(ZrzTi(1−z))O3 [wherein 0.9
Abstract translation:公开了用于形成选自PLZT,PZT和PT的一种材料的铁电薄膜的铁电薄膜形成用组合物。 铁电薄膜形成用组合物是由通式(1)表示的复合金属氧化物(A):(PbxLay)(ZrzTi(Zr x Ti y))的混合物形成的混合复合金属氧化物的薄膜的液体组合物, (B)或由通式(2)表示的羧酸(B),其中0.9