Abstract:
Disclosed is a radial type of parallel system bus structure using bus wire-printed disks (15) each having printed signal conductors (7) of equal length extending radially from a common contact centre . Each printed signal conductor comprises two twisted conductor lines, and each conductor line consists of many segments disposed alternately on opposite surfaces of the disk, the successive segments of each line being connected by plating in through-holes(10) in the disk. The radial arrangement of signal conductors permits connection of selected CPU boards via equal length of signal path. Also, the use of twisted conductor lines improves the signal transmission characteristics of the bus in high-frequency range.
Abstract:
The present invention provides a connector comprising conductive passages which are at least partially of 0.5 mm or less in width, the fine pitched conductive passages are formed on a base film and coated by substantially insulative adhesive melting at lower temperatures than that of the base film. The conductive passages preferably contain fine convexes and concaves on their surfaces and preferably are made of a metallic material. The present invention also provides a method for making electrical connection by heating and pressing two pairs of diametrically opposed connectors of the present invention by use of substantially insulative adhesive by providing the adhesive between diametrically opposed connectors.
Abstract:
In an illustrative example, an apparatus (100) includes a passive-on-glass (POG) device (104) integrated within a glass substrate (102). The apparatus further includes a semiconductor die (106) integrated within the glass substrate.
Abstract:
A method and apparatus for determining misregistration of internal layers of a PCB using resistance measurements is disclosed. In one embodiment, a method includes measuring a first resistance between a first center terminal and a first peripheral terminal of a first registration coupon on a printed circuit board (PCB) panel (10) including at least one PCB (15). The method further includes measuring a second resistance between the first center terminal and a second peripheral terminal of the first registration coupon, wherein the first and second peripheral terminals are associated with a first internal layer of the PCB. A difference between the first and second resistances is then calculated. Then, based on this difference, a determination is made of a distance of misregistration of the first internal layer, if any, along a first axis.
Abstract:
This disclosure provides systems, methods and apparatus for three-dimensional (3-D) through-glass via inductors. In one aspect, the through-glass via inductor includes a glass substrate with a first cavity, a second cavity, and at least two through-glass vias. The through-glass vias include metal bars that are connected by a metal trace. The metal bars and the metal trace define the inductor, and each cavity is at least partially filled with magnetic material. The magnetic material can include a plurality of particles having an average diameter of less than about 20 nm. The first cavity can be inside the inductor and the second cavity can be outside inductor. In some implementations, the first and the second cavity can be vias that extend only partially through the glass substrate.
Abstract:
A main wire 111 has inner layer wiring patterns 161 to 165 which are wired on an inner layers 114 and 115 connected by via conductors 166 to 169 in series. In addition, a main wire 112 has inner layer wiring patterns 181 to 185 which are wired on the inner layers 114 and 115 connected by via conductors 186 to 189. The inner layer wiring patterns 161 to 165 and the inner layer wiring patterns 181 to 185 are wired so as to change the layer to the inner layer on the opposite side to each other. Branch wires 1211 to 1214 and 1221 to 1224 are branched from the via conductors 166 to 169 and 186 to 189, respectively. Thereby, the present invention provides an inexpensive printed wiring board which can reduce ringing without upsizing the printed wiring board.
Abstract:
Es wird ein Herstellungsverfahren für eine Twisted-Pair-Leitung beschrieben. Zuerst werden schräg verlaufende Streifen (11, 21) mit Hilfe einer elektrisch leitenden Tinte auf ein nichtleitendes Substrat gedruckt. Auf diese Streifen werden Übersteiger gedruckt, wobei auf die restliche Oberfläche der Streifen (11, 21) eine Isolation aufgebracht wird. Anschließend werden die entsprechend der Streifen (11, 21) zugehörigen Übersteiger mittels Verbindungsabschnitten (14, 24) so verbunden, dass ein erster Leiter (10) und ein zweiter Leiter (20), die in Bezug zueinander verdrillt angeordnet sind, gebildet werden.