Abstract: An electromagnetic wave transmission board proofed against internal signal leakage includes an inner plate, a first outer plate, a second outer plate, a first plate bump, a first conductive bump, a second plate bump, and a second conductive bump. The inner plate defines a first through hole with a plated metal layer on the hole wall. The first and second plated bumps are disposed between the first outer and inner plates. The second plate bump and the second conductive bump are disposed between the second outer plate and the inner plate. The plate metal layer, the first plate bump, the first conductive bump, the first outer plate, the second outer plate, the second conductive bump, and the second plated bump jointly form an air-filled chamber. A method for manufacturing the electromagnetic wave transmission board is also provided.

Abstract: A method for manufacturing a circuit board structure with a waveguide is provided. The method includes: providing a first substrate unit, a second substrate unit, a third substrate unit, and two adhesive layers, the first substrate unit including a first dielectric layer and a first conductive layer, the first conductive layer including a first shielding area and two first artificial magnetic conductor areas disposed on two sides of the first shielding area; the second substrate unit including a second dielectric layer and a second conductive layer, the second conductive layer including a second shielding area; the third substrate unit defining a first slot, and the adhesive layer defining a second slot; stacking the first substrate unit, one of the adhesive layers, the third substrate unit, another one of the adhesive layers, and the second substrate unit in that order; pressing the intermediate body.

Abstract: A method for manufacturing a circuit board structure with a waveguide is provided. The method includes: providing a plate including a top wall and sidewalls disposed on the top wall, an opening being defined between ends of two adjacent sidewalls away from the top wall; forming a conductive layer on the plate to obtain a conductive plate; providing a circuit board, the circuit board comprising an outer circuit layer; mounting the conductive plate on the outer circuit layer, causing the outer circuit layer to be disposed on the opening. The two adjacent sidewalls, the top wall between the two adjacent sidewalls, and the circuit board between the two adjacent sidewalls cooperatively constitutes a tube body of the waveguide, and the conductive layer and the outer circuit layer on an inner surface of the tube body cooperatively constitute a shielding of the waveguide.

Abstract: A method of manufacturing a circuit board having waveguides including forming a waveguiding structure by injection molding. The waveguiding structure includes a plurality of waveguides arranged at intervals and at least one connecting portion connecting two adjacent waveguides. Each waveguide includes a waveguiding substrate and at least one protrusion on the waveguiding substrate. The connecting portion is removed to obtain at least two waveguides. A metal layer is formed to wrap the whole outer surface of each waveguide. A plurality of receiving grooves is formed to penetrate a wiring board. Each waveguide wrapped by the metal layer is embedded in one of the receiving grooves. The waveguides and the wiring board are fixed. A portion of the metal layer on a surface of each protrusion facing away from the waveguiding substrate is removed. A circuit board is also provided.

Abstract: An electroplating method of a circuit board includes: providing a multi-layer board having a conductive layer embedded therein; penetratingly forming a thru-hole and at least one penetrating hole in the multi-layer board, and forming a conductive portion on an inner wall defining the thru-hole and connected to the conductive layer, wherein the at least one penetrating hole is located at one side of the thru-hole, and an annular portion of the conductive layer exposed from the at least one penetrating hole is defined as an electroplated region; and electroplating the electroplated region to be formed with a metal post by applying a current to the conductive portion, wherein the metal post is filled in the at least one penetrating hole and is connected to the electroplated region.

Abstract: An electromagnetic wave transmission board includes a composite board and a plated metal layer. The composite board has a plurality of inner walls surroundingly defining an elongated channel in an interior of the composite board. The plated metal layer is formed on at least part of the inner walls so as to jointly form an inner channel structure in the channel. The inner channel structure surroundingly defines a predetermined space filled with air, and the inner channel structure has two entrances in air communication with the predetermined space. The predetermined space of the inner channel structure is configured to receive and output an electromagnetic wave signal through the two entrances, respectively, and the electromagnetic wave transmission board is configured to transmit the electromagnetic wave signal by using the air in the predetermined space of the inner channel structure as a conductive medium.

Abstract: A circuit board structure with chips embedded therein includes a multi-layer board and a power module embedded in the multi-layer board. The power module includes an insulating material, a power unit covered by the insulating material, and a circuit layer disposed on the insulating material. The power unit includes an electrically and thermally conductive carrier and a plurality of power chips. The electrically and thermally conductive carrier includes a transmitting portion and a carrying portion perpendicularly connected to the transmitting portion. Each power chip has a first electrode layer and an opposite second electrode layer. The first electrode layers are fixed on and electrically connected to the carrying portion in parallel, and the power chips are disposed at one side of the transmitting portion. The circuit layer is electrically connected to the electrically and thermally conductive carrier and the second electrode layers.

Abstract: A circuit board structure includes a multi-layer board and a ceramic resistor embedded in the multi-layer board. The ceramic resistor includes a ceramic sheet, a plurality of connecting pads spacedly arranged on the ceramic sheet, and a plurality of resistance layers arranged on the ceramic sheet. At least one of the resistance layers is arranged between and electrically connected to any two of the connecting pads for providing a resistance value. The number of the resistance values provided by the ceramic resistor is more than the number of the resistance layers. The multi-layer board has a plurality of contacts arranged apart from each other, and the contacts are respectively and electrically connected to the connecting pads.

Abstract: A printed circuit board includes a first substrate, two first circuits formed on a surface of the first substrate, and a thick copper circuit. The thickness of each first circuit is smaller than the thickness of the first substrate, and the first substrate and one of the first circuits cooperatively define a circuit trench. The thick copper circuit is arranged in the circuit trench and is integrally connected to the first circuit, which is corresponding to the groove. The thick copper circuit and the connected first circuit are defined as a thick circuit, and another first circuit is defined as a thin circuit. The length of the thick copper circuit connected to the corresponding first circuit is identical to or greater than 10% of the length of the thick circuit. Additionally, the instant disclosure also provides a method for manufacturing a printed circuit board.

Abstract: A circuit board includes a multi-layer structure, a ceramic member, and a first conductive layer. The multi-layer structure has a thru-hole penetrating two opposite board surfaces thereof. The multi-layer structure includes a plurality of stacked plates and an adhesive connecting any two stacked plates. The ceramic member is arranged in the thru-hole of the multi-layer structure, and a surface of the ceramic member is approximately coplanar with a board surface of the multi-layer structure. The adhesive is adhered on the lateral surface of the ceramic member for connecting the ceramic member and the plates. The first conductive layer is formed on the board surface of the multi-layer structure and the surface of the ceramic member. Thus, the circuit board of the instant disclosure can be applied to a high-heat-generating product and is different from a conventional circuit board.

Abstract: A circuit board having an interior space includes a multi-layer structure and a compartmentalized frame embedded in the multi-layer structure. The multi-layer structure has a plurality of plates stacked along a stacking direction and a gel combining any two adjacent plates. The plates include two outer plates and at least one inner plate arranged between the outer plates. The compartmentalized frame defines a predetermined space. The compartmentalized frame is arranged between the outer plates and substantially abuts the outer plates. The compartmentalized frame is arranged in a path of a flowing direction of gel which flows toward the predetermined space to prevent any gel from flowing into the predetermined space. Thus, the circuit board of the instant disclosure is provided with the interior space accurately formed by embedding the compartmentalized frame.

Abstract: A circuit board structure manufacturing method includes the following steps. A circuit substrate is provided including an insulating layer, a first metal layer, and a second metal layer. The insulating layer is disposed between the first metal layer and the second metal layer. The first metal layer has a first cavity. The insulating layer has a second cavity and a provisional region. A width of the first cavity is larger than a width of the second cavity. The provisional region is defined between a sidewall of the first metal layer defining the first cavity and another sidewall of the first metal layer defining the second cavity. A first masking layer is formed to cover the first metal layer and provisional region. The second cavity is exposed from the first masking layer. A heat-dissipating metal member is formed in the second cavity. Furthermore, the first masking layer is removed.

Abstract: A circuit board structure manufacturing method includes the following steps. A circuit substrate is provided including an insulating layer, a first metal layer, and a second metal layer. The insulating layer is disposed between the first metal layer and the second metal layer. The first metal layer has a first cavity. The insulating layer has a second cavity and a provisional region. A width of the first cavity is larger than a width of the second cavity. The provisional region is defined between a sidewall of the first metal layer defining the first cavity and another sidewall of the first metal layer defining the second cavity. A first masking layer is formed to cover the first metal layer and provisional region. The second cavity is exposed from the first masking layer. A heat-dissipating metal member is formed in the second cavity. Furthermore, the first masking layer is removed.

Abstract: A circuit board includes a substrate and a through via. The substrate has a first surface and a second surface opposite to the first surface. The substrate includes circuit layers and insulation layers. The insulation layers are sandwiched between the circuit layers. The through via goes through the substrate and has portions defining a first portion and a second portion. The first portion of the through via is coated with a first metal layer and electrically connected to at least one of the circuit layer by the first metal layer. The second portion of the through via is coated with a second metal layer and electrically connected to at least one of the circuit layer by the second metal layer. The first and second portions are electrically insulted, and the diameter of the second portion is larger than that of the first portion.

Abstract: This invention discloses a printed circuit board manufacturing method capable of manufacturing circuits with at least two different thicknesses on a same PCB substrate. In the printed circuit board manufacturing method, a circuit trench is formed on a first PCB substrate having a copper clad circuit layer of a smaller thickness and exposed from the bottom of a groove on another side of the copper clad layer, and then a thick copper is filled into the circuit trench by a copper electroplating method, and then a printed circuit board manufacturing flow is adopted to manufacture the printed circuit board having the circuits with at least two different thicknesses on the first PCB substrate, so as to achieve the effect of saving material costs, avoiding a waste of high priced metals, and reducing pollution sources.

Abstract: In a printed circuit board manufacturing method that manufactures at least one thin circuit and at least one large cross-section circuit on a same PCB substrate, a circuit trench is formed on a first PCB substrate having a copper clad circuit layer of a smaller thickness and exposed from the bottom of a groove on another side of the copper clad layer, and then a thick copper is filled into the circuit trench by a copper electroplating method until the thick copper is protruded from the first PCB substrate to form the large cross-section circuit along the circuit trench, and at least one prepreg is covered onto the large cross-section circuit and at a position where it is exposed from the board surface of the first PCB substrate, and the prepreg is covered onto the large cross-section circuit by a hot melt pressing method to maintain a flat smooth surface.