摘要:
A bonding material comprising metal particles coated with an organic substance having carbon atoms of 2 to 8, wherein the metal particles comprises first portion of 100 nm or less, and a second portion larger than 100 nm but not larger than 100 μm, each of the portions having at least peak of a particle distribution, based on a volumetric base. The disclosure is further concerned with a bonding method using the bonding material.
摘要:
The present invention is directed to enhancing the bonding reliability of a bonding portion between an Al electrode of a semiconductor device and a bonding material having metal particles as a main bonding agent. In the semiconductor device, a semiconductor element and an Al electrode are connected to each other with a bonding layer made of Ag or Cu interposed therebetween, and the bonding layer and the Al electrode are bonded to each other with an amorphous layer interposed therebetween. It is possible to obtain excellent bonding strength to the Al electrode by performing a bonding process in atmospheric air by using a bonding material including a metal oxide particle with an average diameter of 1 nm to 50 μm, an acetic acid- or formic acid-based compound, and a reducing agent made of an organic material.
摘要:
The inverter has a plurality of arms for conducting or cutting off a current and each arm has a switching device and a first and a second wiring layer for connecting the switching device. The first and second wiring layers of each arm are respectively formed on insulating substrates, and one face of the switching device is fixed to the first wiring layer, and the second wiring layer and the other face of the switching device are electrically connected by a laminal conductor, and the laminal conductor has a first and a second connection, and the first connection of the laminal conductor is fixed to the other face of the switching device, and the second connection of the laminal conductor is fixed to the second wiring layer.Thereby, a large current of the inverter can be realized and the assembly capacity of the inverter or the vehicle drive unit will be improved.
摘要:
A semiconductor device in which the lifetime of mounted components can be prolonged. A cooling system for controlling the temperature of a refrigerant through a heating section and a radiator is provided. The semiconductor device is connected to the cooling system and is cooled. A variation width (ΔT1) of temperature controlled by the cooling system through the heating section and the radiator is smaller than a temperature variation (ΔT2) of the refrigerant caused by variations in operating conditions of the semiconductor device (ΔT1≦ΔT2).
摘要:
A semiconductor device with improved the adhesion between bonding pads and ball portions of gold wires is provided to improve the reliability of a semiconductor device. About 1 wt. % of Pd is contained in gold wires for connection between electrode pads formed on a wiring substrate and electrode pads (exposed areas of a top layer wiring formed mainly of Al) formed on a semiconductor chip. In bonded portions between the electrode and ball portions of the gold wires, an interdiffusion of Au and Al is suppressed to prevent the formation of Au4Al after PCT (Pressure Cooker Test). Thus, a desired bonding strength is obtained even when the pitch of the electrode pads is smaller than 65 μm and the diameter of the ball portion is smaller than 55 μm or the diameter of the wire portion of each gold wire is not larger than 25 μm.
摘要:
An object of the invention is to be capable of easily acquiring a fabric having a desired feeling using a stretch yarn. A knitting controller (20) controls a carriage (5), and the like, according to knitting data and control data stored in a memory (21). Data representing relationships between a gauge texture and a stitch loop length being obtained after knitting and the relationships between these gauge texture and stitch loop length and the length and tension of the stretch yarn (2) being fed at the time of knitting are collected previously and stored in the memory (21) in the form of table data. The knitting controller (20) sets control target values of the length and tension of the stretch yarn (2) for a yarn feed controller (23) such that a gauge texture and a stitch loop length being specified by an input unit (22) can be attained, with reference to the table data stored in the memory (21).
摘要:
A semiconductor device, wherein a first metallic member is bonded to a first electrode of a semiconductor element via a first metallic body containing a first precious metal, and a second metallic member is bonded to a second electrode via a second metallic body containing a second precious metal.
摘要:
A dryer apparatus for use in a woven and knitted fabric is constructed such that a first drying rack disposed at an upper step, and at least one step of a second drying rack disposed at a lower step thereof are provided in a frame. Each of the drying racks is formed of a drying surface having ventilation. A first drying device is disposed above the first drying rack, and a second drying device is disposed above the second rack. Each of the drying devices is formed of a drying irradiation surface for irradiating heat ray and/or heated air, and is constructed to be movable for reciprocation along the drying surface of the drying rack by means of a driving device. The drying device disposed above the second drying rack is constructed to be able to switch a direction of the drying irradiation surface from downside to upside and to be able to dry from both of an upper and a lower surface of the first drying rack.
摘要:
A semiconductor device with improved the adhesion between bonding pads and ball portions of gold wires is provided to improve the reliability of a semiconductor device. About 1 wt. % of Pd is contained in gold wires for connection between electrode pads formed on a wiring substrate and electrode pads (exposed areas of a top layer wiring formed mainly of Al) formed on a semiconductor chip. In bonded portions between the electrode and ball portions of the gold wires, an interdiffusion of Au and Al is suppressed to prevent the formation of Au4Al after PCT (Pressure Cooker Test). Thus, a desired bonding strength is obtained even when the pitch of the electrode pads is smaller than 65 μm and the diameter of the ball portion is smaller than 55 μm or the diameter of the wire portion of each gold wire is not larger than 25 μm.
摘要:
The inverter has a plurality of arms for conducting or cutting off a current and each arm has a switching device and a first and a second wiring layer for connecting the switching device. The first and second wiring layers of each arm are respectively formed on insulating substrates, and one face of the switching device is fixed to the first wiring layer, and the second wiring layer and the other face of the switching device are electrically connected by a laminal conductor, and the laminal conductor has a first and a second connection, and the first connection of the laminal conductor is fixed to the other face of the switching device, and the second connection of the laminal conductor is fixed to the second wiring layer. Thereby, a large current of the inverter can be realized and the assembly capacity of the inverter or the vehicle drive unit will be improved.