Abstract:
Enlarged spacing is provided between rows of vias in a ball grid array (BGA) multilayered printed wiring board land pattern in which the lands in the pattern are connected to the vias by a link connector by rotating, elongating, and/or truncating selected consecutive link connectors and rotating their respective corresponding vias in a row or column or selected consecutive rows or columns to achieve the enlarged spacing between rows or columns of vias in the BGA land pattern. Enhanced spacing between selected grid columns or rows of vias is provided such that some of the grid pitches for the vias are equal to that of the standard BGA and at least some are of a greater grid pitch.
Abstract:
A method and apparatus is provided that pertains to resisting crack initiation and propagation in electrical interconnections between components and substrates in ball grid array microelectronic packages. A hybrid of dielectric defined and non-dielectric defined electrical interconnects reduces the potential for electrical interconnection failure without having to control the dielectric defined interconnect ratio of substrates. In addition selective orientation of the dielectric defined edge portion of the electrical interconnect away from the point where cracks initiate resists crack propagation and component failure.
Abstract:
In a first embodiment, the invention provides a memory module having an electronic printed circuit board and a plurality of semiconductor chips of the same type that are mounted on at least one outer face of the printed circuit board. The printed circuit board has a connector strip, which runs at a first edge of the at least one outer face in a first direction and has a multiplicity of electrical contacts that are lined up in the first direction. The printed circuit board extends in the first direction between two opposite second edges. At least nine of the semiconductor chips of the same type are respectively mounted next to one another on the outer face of the printed circuit board between the center of the printed circuit board and the respective second edge of the printed circuit board. The semiconductor chips of the same type respectively have a smaller dimension and, in the direction perpendicular to the smaller dimension, a larger dimension that is larger than the smaller dimension. A respective first group of four of the semiconductor chips of the same type, which are oriented so as to have their shorter dimension parallel to the connector strip, is arranged at the respective second edge of the printed circuit board. A second group of five semiconductor chips of the same type is respectively arranged between the first group of semiconductor chips and the center of the printed circuit board. The first group of semiconductor chips and the second group of semiconductor chips are actuated by two separate line buses whose conductor tracks branch toward all the semiconductor chips in the respective group of semiconductor chips.
Abstract:
Circuit board having a plurality of bus lines (6), which run on the circuit board (1) essentially parallel to a preferred direction of the circuit board (1), and having at least one integrated circuit (3) for the high-speed data processing of data, which integrated circuit is arranged on the circuit board (1), is integrated in a housing (4) having a plurality of housing sides (5) and has a plurality of parallel interfaces for connection to the bus lines (6), in which case the housing sides (5) of the integrated circuits (3) are oriented at an inclination with respect to the preferred direction of the circuit board (2).
Abstract:
The present invention is directed to a liquid crystal display including: a plurality of electrode terminals arranged on one of end faces of a TFT glass substrate in such a manner as to be aligned on an imaginary line; and a plurality of lead terminals of a tape carrier package aligned on the electrode terminals, said plurality of lead terminals connected through an anisotropic conductive film; wherein the electrode terminals near the end face of the glass substrate is formed obliquely in such a manner as to be extended in the direction of both right and left with respect to the plurality of electrode terminals.
Abstract:
Integrate circuit die terminal arrangements and configurations for mounting an integrate circuit die on a package substrate to reduce package transmission paths. In one embodiment, terminals for signals sensitive to trace length outside a die are arranged at the corners of the die. The die is mounted on a package substrate in an angle with respect to a package substrate to point the corners of the die at the edges of the package substrate to reduce trace length outside the die. The center of the die may or may not coincide with the center of the substrate. In one embodiment, when compare to a centered, non-rotated die mounting position, mounting a die with corners pointing at the edges of the package substrate does not cause significant differences in substrate warpage.
Abstract:
The present invention relates generally to permanent interconnections between electronic devices, such as integrated circuit packages, chips, wafers and printed circuit boards or substrates, or similar electronic devices. More particularly it relates to high-density electronic devices. The invention describes means and methods that can be used to counteract the undesirable effects of thermal cycling, shock and vibrations and severe environment conditions in general. For leaded devices, the leads are oriented to face the thermal center of the devices and the system they interact with. For leadless devices, the mounting elements are treated or prepared to control the migration of solder along the length of the elements, to ensure that those elements retain their desired flexibility.
Abstract:
An interconnection pattern design, which has an improved reliability under mechanical shock and thermal cycling loads. A semiconductor component comprises a plurality of interconnections aligned into rows and columns to form an interconnection pattern, wherein the interconnections are aligned such that the pattern has substantially rounded or chamfered comers. The present invention provides an improved interconnection life and reliability of ball grid array packages and it is easily implemented.
Abstract:
A high density semiconductor package comprises a substrate, a first package module and a plurality of second package modules. The substrate has a surface on which the first package module and the second package modules are disposed, wherein the second package modules surround the first package module.
Abstract:
Parts of pad electrodes formed on an interconnection board so as to correspond to bump electrodes of a semiconductor pellet that neighbor parts superposed with the bump electrodes are caused to extend in substantially the same direction, and ultrasonic vibration is applied in this extension direction so as to make a connection between the pad electrodes and the bump electrodes.