A printed circuit board (PCB) for a phased array antenna transceiver assembly, a transceiver assembly, and a radar are provided. The PCB includes a microwave core board layer, operating in a first frequency band, where a chip carrying area is arranged on a side of the microwave core board layer, and the chip carrying area is configured to carry a chip; a digital core board layer, operating in a second frequency band and stacked on another side of the microwave core board layer away from the chip carrying area; where an interlayer connecting path is arranged on the microwave core board layer and the digital core board layer, and the interlayer connecting path is connected to the chip carrying area; and a heat dissipation member, embedded in the digital core board layer and connected to the chip carrying area.

A circuit board assembly of an information handling system has stepped diameter vias that carry communication signals through printed circuit board (PCB) substrates. Each stepped diameter via has a first barrel portion of a first diameter that is drilled through a first portion of the PCB substrates and that is at least lined with a conductive material to electrically conduct a selected one of: (i) a direct current and (ii) a communication signal from an outer layer to an internal layer of the more than one PCB substrate. Each stepped diameter via further includes a second barrel portion that extends from the first barrel portion deeper into the PCB substrates. The second barrel portion has a second diameter that is less than the first diameter and the smaller second diameter improves signal integrity (SI).

A circuit board design device judging whether a circuit board has a pair of via holes which are adjacent within a solder bridge formation distance within which a solder bridge can be formed; when the affirmative, the circuit board design device judging whether each of the pair of via holes is electrically connected in parallel to other via hole with a land not coated with solder resist; when the circuit board design device judges that at least one of the pair of via holes is electrically connected in parallel to the other via hole with a land not coated with solder resist, the circuit board design device determining the at least one of the pair of via holes which is electrically connected in parallel to the other via hole with a land not coated with solder resist as a coated via hole with a land coated with solder resist.

Disclosed herein is an optical processing device and an optical processing method. The optical processing device comprises: a light source unit configured to emit light; and a processing unit configured to expose an object to be processed to the light emitted from the light source unit. The processing unit includes: a processing region in which the object to be processed is held and exposed to the light in an atmosphere of a processing gas; and a preparatory region through which the processing gas passes, while being exposed to the light, to move toward the processing region, the preparatory region being configured to prevent the object to be processed from being arranged thereon.

A method for forming a three-dimensional object with at least one conductive trace comprises providing an intermediate structure that is generated (e.g., additively or subtractively generated) from a first material in accordance with a model design of the three-dimensional object. The intermediate structure may have at least one predefined location for the at least one conductive trace. The model design includes the at least one predefined location. Next, the at least one conductive trace may be generated adjacent to the at least one predefined location of the intermediate structure. The at least one conductive trace may be formed of a second material that has an electrical and/or thermal conductivity that is greater than the first material.

A desmear module for a horizontal galvanic or wet-chemical process line for metal, in particular copper, deposition on a substrate to be treated for a removal of precipitates comprising a desmear container connectable to a desmear unit, a pump and at least a first liquid connection element for connecting said pump with the desmear unit, wherein said pump is in conjunction with said desmear unit by said at least first liquid connection element; and wherein a treatment liquid level is provided inside the desmear module, which is above an intake area of the pump; wherein the desmear module further comprises at least a first liquid area, at least an adjacent second liquid area comprising the intake area of the pump, and at least a first separating element arranged between said at least first liquid area and said at least second liquid area.

An electronic isolation device is formed on a monolithic substrate and includes a plurality of passive isolation components. The isolation components are formed in three metal levels. The first metal level is separated from the monolithic substrate by an inorganic PMD layer. The second metal level is separated from the first metal level by a layer of silicon dioxide. The third metal level is separated from the second metal level by at least 20 microns of polyimide or PBO. The isolation components include bondpads on the third metal level for connections to other devices. A dielectric layer is formed over the third metal level, exposing the bondpads. The isolation device contains no transistors.

Provided is a printed circuit board structure that needs minimum manufacturing costs and in which there is little possibility that a solder bridge is formed. The printed circuit board structure is formed with via holes for electrically conductively connecting electrically conductive layers of a printed circuit board, and the via holes include a coated via hole with a land coated with solder resist and a non-coated via hole with a land not coated with solder resist, wherein the coated via hole is arranged in a place of the printed circuit board where a solder bridge or a solder ball is highly likely to be generated, and is electrically connected to at least one of the non-coated via hole in parallel.

A circuit-forming method includes a first forming step of forming a resin layer including a recessed portion by a first discharge device configured to discharge a curable resin, and a second forming step of forming an electrode inside the recessed portion by a second discharge device, which is configured to discharge a conductive paste, by referring to a first mark formed by the first discharge device. A circuit-forming apparatus includes a first discharge device configured to form a resin layer including a recessed portion by discharging a curable resin, and a second discharge device configured to form an electrode inside the recessed portion by discharging a conductive paste by referring to a first mark formed by the first discharge device.

An etching device includes a nozzle unit including at least one nozzle including an etching solution injection hole, an etching solution collection hole, and a sealing part. The etching solution injection hole is configured to provide an etching solution to an etching object, the etching solution collection hole is configured to collect the etching solution, and the sealing part surrounds the etching solution injection hole and the etching solution collection hole to prevent the etching solution from leakage.