摘要:
A common drain dual MOSFET chip scale package and a method of fabricating same are provided. The method of fabricating a plurality of common drain dual MOSFET chip scale packages includes the steps of providing a wafer having a plurality of common drain dual MOSFET devices disposed thereon, insulating a back drain metal surface of the wafer, under bump metallizing ball grid array pads on each of the common drain dual MOSFET devices, stenciling a solder mask to the wafer to expose the ball grid array pads, reflowing solder paste or pre-formed solder balls to form ball grid arrays of solder bumps, and dicing the wafer into the plurality of chip scale packages
摘要:
An electronic package for containing at least a top packaging module vertically stacked on a bottom packaging module. Each of the packaging modules includes a semiconductor chip packaged and connected by via connectors and connectors disposed on a laminated board fabricated with a standard printed-circuit board process wherein the top and bottom packaging module further configured as a surface mountable modules for conveniently stacking and mounting to prearranged electrical contacts without using a leadframe. At least one of the top and bottom packaging modules is a multi-chip module (MCM) containing at least two semiconductor chips. At least one of the top and bottom packaging modules includes a ball grid array (BGA) for surface mounting onto the prearranged electrical contacts. At least one of the top and bottom packaging modules includes a plurality of solder bumps on one of the semiconductor chips for surface mounting onto the prearranged electrical contacts. The laminated board of the bottom packaging modules further has a thermal expansion coefficient substantially the same as a printed circuit board (PCB) whereby a surface mount onto the PCB is less impacted by a temperature change
摘要:
This invention discloses an electronic package for containing a vertical semiconductor chip that includes a laminated board having a via connector and conductive traces distributed on multiple layers of the laminated board connected to the via connector. The semiconductor chip having at least one electrode connected to the conductive traces for electrically connected to the conductive traces at a different layer on the laminated board and the via connector dissipating heat generated from the vertical semiconductor. A ball grid array (BGA) connected to the via connector functioning as contact at a bottom surface of the package for mounting on electrical terminals disposed on a printed circuit board (PCB) wherein the laminated board having a thermal expansion coefficient in substantially a same range the PCB whereby the BGA having a reliable electrical contact with the electrical terminals.
摘要:
This invention demonstrates a method for making a device of storing energy, enhancing the efficiency of manufacture and the reliability of products. The electrode plates of storing energy are accumulated according to the working voltage needed to form a pre-structuring unit of storing energy. The electrolyte leak of a capacitor and the unequal voltage of an accumulative unit, which are the main factors of the fail in a conventional capacitor, are solved by using three layers of sealing gel. And then, the electrolyte is to back fill in by vacuum and to seal the units to accomplish the device of storing energy. Each porous electrode in the device has two faces at the same time, which are used for the positive and negative poles respectively. The electrode plates are assembled with bipolar structure, the same as the series connection of the storing-energy devices, which can reduce the volume and mass of the device and the cost of the manufacture. Such kind of energy-storing units can be adjusted according to the need of customers in layers of units or sizes of the area of the electrodes, which are of great advantage to mass production.
摘要:
A lid for a cold box has a shell-like configuration with front and rear shell members hingedly connected. The front shell member pivots relative to the rear shell member to provide access to the interior of the cold box when the front shell member is lifted by a handle. A viewing window is provided in the front shell member. The rear shell member is vented to provide passageways for the intake and outtake of air.
摘要:
An elongate display track device has one or more intermediate sections, a front section with a front piece and product identification panels, and a rear section with a stop member. The sections are frangibly connected to alter the length of the track device. The sections are releasably connected by keys and keyways. The length is changed by removing one or more intermediate sections, then re-attaching the rear section to provide the stop member. The front piece provides a surface along its bottom for a product identification label. Arms upstanding from the front track section support a panel which provides a surface for product identification.
摘要:
A front panel for a display rack has a base, upstanding sidewalls connected along their bottom end portions to the base, face members connected to the front edges of the sidewalls, and an elongate connecting member connected to the top end portions of the face members. The base, face members and connecting member define a viewing window for the display rack through which a beverage container in a display rack in a refrigerator can be viewed. The base and connecting member curve outward to position a beverage container forward in the display rack. A pair of downwardly extending fingers fit into receiving slots in a front segment of the rack to fasten the front panel to the front segment of the display rack.
摘要:
Apparatus for monitoring one or more vital signs of a subject has a number of sensors. There is at least one redundant sensor. Each sensor originates a signal. A selection system determines performance criteria for a number of groups of signals. Each group includes one or more signals. The apparatus computes a predicted value for a vital sign by either computing a value from each group of signals and taking a weighted average with weights based upon the performance criterion or by selecting one of the groups of signals for which the performance criterion is best and computing the output value from that group of signals. The output values are relatively insensitive to artifacts and to errors caused by the disconnection or malfunctioning of one sensor.
摘要:
The dispenser comprises an eductor for the drawing of a concentrate fluid from a liquid reservoir container into an input carrier fluid by means of the flow of the other fluid utilizing a venturi effect. In this dispenser the concentration of the concentrate fluid in the input fluid can be varied to differing preset amounts. The dispenser contains an elongated channel having an input for the input fluid and dispensing nozzle at an exit end for dispensing the chemical concentrate fluid in a diluted form. There is a transverse intersecting channel intermediate the input end and the exit end. The transverse intersecting channel has an insert that is moveable in the intersecting channel, apertures of the moveable insert being alignable with apertures in the transverse intersecting channel and the liquid reservoir container holding the concentrate fluid. One aperture is in alignment with the elongated channel and another aperture in alignment with a channel from the liquid reservoir container. The channels from the liquid reservoir container will have a plurality of various sized apertures to provide for the flow of differing amounts of chemical concentrate fluid into the input fluid at a given input fluid flow rate. This results in a product stream of the input fluid diluted to a set concentration. By adjusting the moveable insert in the transverse intersecting channel and/or the input fluid flow rate the concentration of the chemical concentrate in the product fluid is changed.
摘要:
A power device package for containing, protecting and providing electrical contacts for a power transistor includes a top and bottom lead frames for directly no-bump attaching to the power transistor. The power transistor is attached to the bottom lead frame as a flip-chip with a source contact and a gate contact directly no-bumping attaching to the bottom lead frame. The power transistor has a bottom drain contact attaching to the top lead frame. The top lead frame further includes an extension for providing a bottom drain electrode substantially on a same side with the bottom lead frame. In a preferred embodiment, the power device package further includes a joint layer between device metal of source, gate or drain and top or bottom lead frame, through applying ultrasonic energy.