摘要:
A structural analysis program which enables easy structural analysis in accordance with a finite element method based on data representing a two-dimensional shape. A two-dimensional model of a structure is produced in response to a manipulation input which designates a material arrangement pattern and a thickness of each layer of the structure. A three-dimensional model is produced by adding the designated thickness of each layer to the material arrangement pattern of the layer so as to make the material arrangement pattern three-dimensional and stacking the three-dimensionalized material arrangement pattern of each layer. A finite element model is produced by dividing the three-dimensional model into a plurality of voxels. The computer performs structural analysis based on the produced finite element model. Thereby, an analysis result of a multilayer structure defined by the two-dimensional model is obtained.
摘要:
A BGA semiconductor device includes a package substrate carrying thereon a semiconductor chip in a face-down state and a cap member covering the semiconductor chip on the package substrate, wherein the cap member has a optimized Young modulus smaller than about 20 GPa and a thermal conductivity exceeding about 100 W/(m·K).
摘要:
A semiconductor device includes multiple electrode pads provided in an interconnection layer over a semiconductor substrate; an insulating layer provided on the interconnection layer so as to expose portions of the electrode pads; multiple conductive layers having their respective first ends connected to the exposed portions of the corresponding electrode pads so as to extend therefrom on the insulating layer; and multiple protruding electrodes provided at respective second ends of the conductive layers, wherein the conductive layers extend in a given direction relative to the electrode pads.
摘要:
An article under inspection is rotated at pre-set angular increments which total more than 360.degree., to divide the figure inscribed on the curved surface of the article into plural fractions. Selected picture fractions which discard redundant overlapping picture data, is synthesized into picture information indicative of one full-format picture based on which the figure inscribed on the curved surface of the article. Acceptability is determined automatically and quantitatively as compared to the conventional functional inspection and is performed without regard to the difference in skill from one operator to another. Recognizing the characters or symbols inscribed on the curved surface of the article under inspection one by one based on the information of the synthesized full-format picture, allows a comparison of the character string consisting of the recognized characters or symbols to a pre-set control character string.
摘要:
A method of manufacturing a semiconductor device using a wiring substrate is provided which can facilitate the handling of the wiring substrate. The method includes the steps of forming a peelable resin layer on a silicon substrate, forming the wiring substrate on the peelable resin layer, mounting semiconductor chips on the wiring substrate, forming semiconductor devices by sealing the plurality of semiconductor chips by a sealing resin, individualizing the semiconductor devices by dicing the semiconductor devices from the sealing resin side but leaving the silicon substrate, peeling each of the individualized semiconductor devices from the silicon substrate between the silicon substrate and the peelable resin layer, and exposing terminals on the wiring substrate by forming openings through the peelable resin layer or by removing the peelable resin layer.
摘要:
A wiring layer is provided on a semiconductor substrate and extends in a predetermined direction. An external connection electrode terminal is provided on the wiring layer through a plurality of column-shaped conductors. The column-shaped conductors are located under the external connection electrode terminal. A density of arrangement of the column-shaped conductors is varied according to a direction of extension of the wiring layer.
摘要:
A wiring layer is provided on a semiconductor substrate and extends in a predetermined direction. An external connection electrode terminal is provided on the wiring layer through a plurality of column-shaped conductors. The column-shaped conductors are located under the external connection electrode terminal. A density of arrangement of the column-shaped conductors is varied according to a direction of extension of the wiring layer.
摘要:
A semiconductor device including a semiconductor chip sealed with an encapsulating resin. Columnar electrodes are connected to electrode pads of the semiconductor chip, and extend through the encapsulating resin. The columnar electrodes are made from bonding wires and include enlarged outer ends. Solder balls are arranged on the surface of the encapsulating resin and connected to the outer ends of the columnar electrodes. In another example, pin wires are formed by half-cutting bonding wires, bonding one end of each of the bonding wires, and cutting the bonding wires at the half-cut portions.
摘要:
A semiconductor device equipped with secondary pads having adequate arrangement for an arbitrary packaging process. The secondary pads are connected with the primary pads of the semiconductor device with a novel lead wire structure, which is characterized by its low electric resistance, good mechanical strength to protect active components of the device, good adhesion to bumps, and anti-electromigration property. The semiconductor device has: semiconductor circuit elements 2 embedded in a semiconductor substrate 1; a plurality of conductive primary pads 4 each formed in a region above, and surrounding, the circuit element 2; a first protective insulation substrate 5 covering the substrate and having first openings 6 for the primary pads 4; lead wires 7 each consisting of a conductive bulk layer 15 made of copper and a metallic top layer 16, the bulk layer formed on the first protective insulation substrate 5 and having one end connected with a corresponding one of the primary pads 4 through an associated opening 6 and the other end located in a region surrounding the opening 6, while the top layer made of a metal having Vickers hardness of more than 100; and a second protective insulation substrate 8 having second openings 9 for exposing the top surfaces of the other ends of the lead wires 7 serving as the secondary pads 17.
摘要:
A semiconductor device equipped with secondary pads having adequate arrangement for an arbitrary packaging process. The secondary pads are connected with the primary pads of the semiconductor device with a novel lead wire structure, which is characterized by its low electric resistance, good mechanical strength to protect active components of the device, good adhesion to bumps, and anti-electromigration property. The semiconductor device has: semiconductor circuit elements 2 embedded in a semiconductor substrate 1; a plurality of conductive primary pads 4 each formed in a region above, and surrounding, the circuit element 2; a first protective insulation substrate 5 covering the substrate and having first openings 6 for the primary pads 4; lead wires 7 each consisting of a conductive bulk layer 15 made of copper and a metallic top layer 16, the bulk layer formed on the first protective insulation substrate 5 and having one end connected with a corresponding one of the primary pads 4 through an associated opening 6 and the other end located in a region surrounding the opening 6, while the top layer made of a metal having Vickers hardness of more than 100; and a second protective insulation substrate 8 having second openings 9 for exposing the top surfaces of the other ends of the lead wires 7 serving as the secondary pads 17.