59results about How to "Shorten wiring distance" patented technology

Disclosed here is a multi-chip module enhanced in performance and reduced in size. A second semiconductor chip having bonding pads at the periphery of its surface is mounted over a first semiconductor chip laid out over a surface of a substrate back to back and a spacer is provided at a portion of the second semiconductor chip surface except for a predetermined area that includes the portion where the bonding pads are formed while a third semiconductor chip is mounted over the spacer, the third semiconductor having the same circuit function as the second semiconductor chip and oriented similarly to the second semiconductor chip. The bonding pads of the second and third semiconductor chips are connected to their corresponding electrodes formed over the substrate through bonding wires respectively, then the first to third semiconductor chips and the bonding wires provided over the substrate are all sealed by a sealing agent.

A chip embedded packaging structure includes a first metal board, a second metal board having at least a through cavity, in which the second metal board is disposed on the upper surface of the first metal board to form a heat dissipating substrate, at least a semiconductor chip and a capacitor chip embedded in the first metal board and embraced in the through cavity of the second metal board, a passive component layer disposed on part of the upper surface of the second metal board, and at least a build-up circuit layer covering the semiconductor chip, the capacitor chip, and the passive component layer and electrically connecting them through a plurality of conductive vias.

The objective of present invention is to provide an electroplating solution capable of forming the upper face of a via-hole and the upper face of a conductor circuit in the same layer in approximately the same plane at the time of manufacturing a multilayer printed circuit board. The electroplating solution of the present invention is characterized by containing 50 to 300 g/L of copper sulfate, 30 to 200 g/L of sulfuric acid, 25 to 90 mg/L of chlorine ion, and 1 to 1000 mg/L of an additive comprising at least a levelling agent and a brightener.

In a directional speaker control system for realizing good sound localization by correcting the directivity of a directional speaker, adapted to an audio surround system in which a desired sound is reflected on a wall surface or a sound reflection board so as to produce a virtual speaker, a first directional speaker emits a first sound toward the wall surface or sound reflection board so that the reflected sound reaches a prescribed listening position, and a second directional speaker emits a second sound, which comes to have an inverse phase with respect to an audio element of the first sound reaching the listening position directly, toward the listening position. Thus, it is possible to adequately dampen the audio element (particularly, low-frequency components) emitted directly toward the listening position from the first directional speaker; hence, it is possible to realize good sound localization.

An EL display panel including: a pixel array section in which EL display elements whose light emission state is controlled by an active matrix driving system are arranged in a form of a matrix; a first writing control line driving section and a second writing control line driving section configured to drive each writing control line from both sides of the pixel array section; and a first power supply line driving section and a second power supply line driving section configured to drive a power supply line disposed along a direction of a horizontal line from both sides of the pixel array section, the first power supply line driving section and the second power supply line driving section being respectively arranged between the first writing control line driving section and the pixel array section and between the second writing control line driving section and the pixel array section.

Each semiconductor radiation detector used for a nuclear medicine diagnostic apparatus (PET apparatus) is constructed with an anode electrode A facing a cathode electrode C sandwiching a CdTe semiconductor member S which generates charge through interaction with γ-rays. Then, a thickness t of the semiconductor member S sandwiched between these mutually facing anode electrode A and cathode electrode C is set to 0.2 to 2 mm. Furthermore, the devices are mounted (laid out) on substrates in such a way that the distance (distance of conductor) between the semiconductor radiation detector and an analog ASIC which processes the signal detected by this detector is shortened. Furthermore, the substrates on which the detectors are mounted are housed in a housing as a unit (detector unit).

Provided is a power converter 3 that directly converts polyphase AC power to AC power. A converter circuit has a plurality of first switching elements 311, 313 and 315 that are connected to each phase R, S or T of the polyphase AC power to enable switching for turning on current-carrying bidirectionally, and a plurality of second switching elements 312, 314 and 316 that are connected to each phase to enable switching for turning on current-carrying bidirectionally. The converter circuit comprises input lines R, S and T connected to each input terminal, and output lines P and N connected to each output terminal. Parts of wiring 347 and 348 of protection circuits 32 are located between output lines P and N. The wiring distance between each protection circuit 32 and the corresponding switching element can be shortened.

A detecting apparatus for detecting a fine geometry on a surface of a sample, wherein an irradiation beam is irradiated against the sample placed in a different environment different from an atmosphere and a secondary radiation emanated from the sample is detected by a sensor, and wherein the sensor is disposed at an inside of the different environment, a processing device to process detection signals from the sensor is disposed at an outside of the different environment, and a transmission means transmits detection signals from the sensor to the processing device.

A semiconductor device is provided with: a semiconductor chip die-bonding mounted face up on a support; an intermediate substrate connecting the semiconductor chip to a plurality of external connection portions; and a plurality of connection bumps connecting the semiconductor chip and the intermediate substrate. The plurality of connection bumps includes a plurality of power supply bumps connected to a plurality of electrode pads on the semiconductor chip for supplying power to the semiconductor chip. The intermediate substrate includes: a plurality of power supply pads connected to the plurality of electrode pads through the plurality of power supply bumps; a bump surface facing the semiconductor chip and having a plurality of power supply pads formed thereon; an external connection surface having a plurality of external connection pads formed thereon connected to the external connection portions; and a capacitor connected to the plurality of power supply bumps.

The invention provides a variable frequency air conditioner circuit board and a variable frequency air conditioner. A PCB of the variable frequency air conditioner circuit board is provided with a bridge rectifier, filter capacitors, a first IPM, an MCU, a first block terminal, a second IPM and a second block terminal connected with the second IPM module. The first IPM and the second IPM are arranged close to the two side edges of the PCB correspondingly. The MCU is arranged between the first IPM and the second IPM. Furthermore, the second IPM and the first block terminal are arranged close tothe same side edge of the PCB. The first block terminal is arranged close to the connecting side edge of the two side edges. The second block terminal is arranged between the first block terminal andthe second IPM. Devices on the circuit board can be made compact in layout while the circuit board is driven by a DC motor adopting two driving modes, and the wiring distance is short. Accordingly, the area of the PCB of the whole circuit board is reduced, and the cost of the circuit board is reduced.

The invention discloses a flexible gathering topology, suitable for a DC distribution network, of a photovoltaic system and a control method of the topology. The flexible gathering topology comprisesphotovoltaic power generation fields, each photovoltaic power generation field comprises photovoltaic arrays, output of each photovoltaic array is connected with the input end of one H bridge module,the output ends of all H bridge modules in one photovoltaic power generation field are connected in series to an AC bus, the AC bus is connected to a bridge arm middle point of a modularized cascadedmulti-level converter (MMC), the output end of the MMC is connected to the DC distribution network, and the output ends of all photovoltaic power generation fields are connected in parallel. The large-scale or ultra-large-scale photovoltaic power generation field structure is analyzed and optimized from the aspect of the whole structure of the photovoltaic power generation field system and aimed at the developing trend towards DC of the distribution network, so that the total operation efficacy of the photovoltaic system is improved.

Disclosed herein is an inductor module including a substrate functioning as a printed wiring board or an interposer; an IC mounting part formed on a surface of the substrate; an inductor which is formed in the substrate at such a position as to overlap with the IC mounting part on a plan-view basis and which is connected to an IC mounted on the IC mounting part; and a magnetic body including a magnetic material selected from among a NiZn ferrite, a NiZnCu ferrite and a Ba ferrite, the magnetic body being disposed intermediately between the IC mounting part and the inductor.