Abstract:
A method for forming a metal wiring line, comprises: (a) forming a bank including a first opening corresponding to a first film pattern and a second opening corresponding to a second film pattern that is coupled to the first film pattern and has a width narrower than a width of the first film pattern; (b) disposing a droplet of a functional liquid in the first opening so as to dispose the functional liquid in the second opening by an autonomous flow of the functional liquid; (c) hardening the functional liquid disposed in the first opening and the second opening; and (d) forming the first film pattern and the second film pattern by alternately repeating step (b) and step (c) at least one time.
Abstract:
A wiring board includes: a flexible insulating base; a plurality of conductive wirings arranged on the insulating base, end portions of the conductive wirings defining inner leads at a region where a semiconductor chip is to be mounted; and bump electrodes that are provided respectively at the inner leads of the conductive wirings. The wiring board further includes: dummy inner leads having a shape and a pitch corresponding to a shape and a pitch of the inner leads and aligned with the inner leads, the dummy inner leads being provided with dummy bump electrodes corresponding to the bump electrodes; a trunk conductive wiring provided for a group of one or an adjacent plurality of the dummy inner leads; and a branch wiring branching off from the trunk conductive wiring, the branch wiring being connected with the dummy inner leads belonging to the group corresponding to the trunk conductive wiring. Stress concentration on the inner leads during packaging of the semiconductor chip, resulting from the sparse arrangement of the electrode pads of the semiconductor chip, can be alleviated, thus suppressing a break in the inner leads.
Abstract:
An energy conditioner structure comprising a first electrode (120), a second electrode (80), and a shield structure (70, 110, 150) provides improved energy conditioning in electrical circuits. The structures may exist as discrete components or part of an integrated circuit. The shield structure in the energy conditioner structure does not electrically connect to any circuit element.
Abstract:
Communication bus having at least one pair of communication lines designed to be connected in series respectively to conductors of a main communication bus designed to be connected to communicating devices of at least one electric panel. Said communication bus comprises at least two branched outputs each having at least two branch lines, said branch lines respectively having a first end connected to a communication line and having a second end designed for connection of the communicating devices. The communication lines are etched on a first conducting layer of a printed circuit, and the branch lines are etched on a second conducting layer of said printed circuit. The communication lines are separated from one another by a distance.
Abstract:
A semiconductor memory module comprises a control chip for driving ECC memory chips and further memory chips. The memory chips are arranged in two rows on a top side and a bottom side of the module circuit board. The ECC memory chips are arranged centrally on the module circuit board alongside the rows of the memory chips. A control bus connects the ECC memory chips and also the memory chips to the control chip. In a region remote from the control chip, the control bus branches in a contact-making hole into a first partial bus, to which a first group of memory chips are connected, and a second partial bus, to which a second group of memory chips are connected. The ECC memory chips are likewise connected to the control bus via the contact-making hole. Since the ECC memory chips are not arranged directly under the control chip, a bus branch directed backward is not required. As a result, space considerations on the module circuit board are eased and signal integrity on the control buses is improved.
Abstract:
A device (20) for interconnecting electrical bundles, includes a plurality of pluggable connection and cross-connect cards (34 to 38) for the electrical bundles. The device further includes a “main” printed circuit (28, 28b) fitted with connectors or slots (29 to 33) designed and arranged to receive the pluggable cards, the printed circuit having a plurality of parallel tracks (46), each enabling two tracks (61 to 63, 68) or tracks starters (70 to 72) provided respectively on two distinct pluggable cards plugged in the connectors of the main printed circuit to be put to the same potential, each of the parallel tracks (46) being in contact with a respective pin (50, 150) of a plurality of connectors of the main printed circuit.
Abstract:
According to some embodiments, a signal line associated with a printed circuit board is provided. In addition, a conductive trace is electrically connected to a portion of the signal line. At least a portion of the conductive trace may be offset from the signal line, and a dielectric layer may be provided between the signal line and the conductive trace to enhance electromagnetic coupling between them. As a result a hybrid resistance and electromagnetic coupling probe may be provided.
Abstract:
A method for arranging conducting lines of a flexible cable in an optical disk drive first confirms the pins having similar functions of all chips on a main board and a sub-board, and uses only one conducting line of the flexible cable to connect these pins. Therefore, the number of the conducting lines of the flexible cable can be reduced.
Abstract:
An apparatus is disclosed that substantially reduces or eliminates the resonance that occurs in vias that connect the layers of a printed circuit board by electrically coupling a first transmission line in a circuit board to a second transmission line in a circuit board by two electrical paths having substantially the same electrical length. The two electrical paths are created by connecting the first transmission line to a first via which is in turn connected to a second via having a second transmission line with a plurality of connecting electrical paths between the two vias. In one illustrative embodiment, electrical traces are used to connect the top of the first via to the top of the second via and the bottom of the first via to the bottom of the second via.
Abstract:
A portable telephone including an integrated circuit chip module with a first integrated circuit chip including a first power source pad for a first power voltage and an adjacent second power source pad for a second power voltage, the first power voltage being higher than the second power voltage, a second integrated circuit chip including a third power source pad for the first power voltage and an adjacent fourth power source pad for the second power voltage, and a wiring board including a first power source wire electrically connected to the first power source pad, a second power source wire electrically connected to the second power source pad, a third power source wire electrically connected to the third power source pad, and a fourth power source wire electrically connected to the fourth power source pad. Distance between the first and second power source wires is shorter than distance between the first or second power source wires and the third or fourth power source wires, and distance between the third and fourth power source wires is shorter than distance between the first or second power source wires and the third or fourth power source wires.