摘要:
In order to mount a semiconductor chip on a carrier layer, consolidated filler material is applied between the semiconductor chip and the carrier layer. The filler material is sucked, under the application of a partial vacuum, from at least one edge section of the semiconductor chip to at least one other edge section of the semiconductor chip. As a result, a package is provided in which the filler material is essentially free of air inclusions.
摘要:
Semiconductor components, which each include at least one semiconductor chip mounted on a common carrier substrate, are singled. The separation is effected by severing of the carrier substrate. The carrier substrate is thereby bent at least in that area of the carrier substrate which is to be severed. The severing takes place beginning from the convexly curved surface of the carrier substrate. In addition, the invention describes a singling device for separating semiconductor components.
摘要:
A method for COB mounting of electronic chips on a circuit board includes contact connection of connecting wires and substantially whole-area adhesive bonding of a housing. A chip is partially adhesively bonded on a circuit board in such a way that the chip can be contact-connected and can be removed again without damage to the circuit board. Electronic tests or a burn-in process is performed on the chip. The chip, with a given functionality in a manner that is required for application of the circuit board, is fully adhesively bonding.
摘要:
The invention provides DNA sequences encoding novel members of the TGF-&bgr; family of proteins. The TGF-&bgr; family comprises proteins which function as growth and/or differentiation factors and which are useful in medical applications. Accordingly, the invention also describes the isolation of the above-mentioned DNA sequences, the expression of the encoded proteins, the production of said proteins and pharmaceutical compositions containing said proteins.
摘要:
A leadframe for connection to a semiconductor chip, in particular a metal leadframe, includes a plurality of lead prongs and at least two raised lead surfaces. When a semiconductor module that includes the leadframe and a semiconductor chip is sheathed with plastic, the raised lead surfaces assure a uniform flow of a plastic composition in a mold cavity and thus prevent air from becoming trapped in a plastic package. The lead surfaces are preferably created by folding over tabs in the leadframe. The invention also relates to preliminary stages of the leadframe and to semiconductor components that contain the leadframe of the invention.
摘要:
A VSMP semiconductor component is mounted by inserting an auxiliary element into a slot in a receptacle. The auxiliary element projects laterally from a narrow side of the semiconductor component and, as the auxiliary element is inserted into the slot, the semiconductor component is properly positioning on the printed circuit board.
摘要:
A workpiece has at least two semiconductor chips, each semiconductor chip having a first main surface, which is at least partially exposed, and a second main surface. The workpiece also comprises an electrically conducting layer, arranged on the at least two semiconductor chips, the electrically conducting layer being arranged at least on regions of the second main surface, and a molding compound, arranged on the electrically conducting layer.
摘要:
A plastic housing includes plastic external faces and the underside of the plastic housing comprises external contact areas on which external contacts are arranged. The plastic external faces are covered by a closed metal layer apart from the underside, wherein the boundary layer between plastic external faces and the closed metal layer includes exposed electrically conductive inclusions of the plastic of the housing.
摘要:
A semiconductor device and manufacturing method. One embodiment provides a device including a semiconductor chip. A first conductor line is placed over the semiconductor chip. An external contact pad is placed over the first conductor line. At least a portion of the first conductor line lies within a projection of the external contact pad on the semiconductor chip.