Abstract: A method for manufacturing a three-dimensional circuit is described as follows. Firstly, a three-dimensional insulating structure having at least one uneven surface is provided. Secondly, a self-assembly film is formed on the uneven surface for completely covering the uneven surface. Next, a catalytic film is formed on the self-assembly film. Afterward, the self-assembly film and the catalytic film are patterned. Then, a three-dimensional circuit structure is formed on the catalytic film by chemical deposition.

Abstract: A process for fabricating a wiring board is provided. In the process, a wiring carrying substrate including a carry substrate and a wiring layer is formed. Next, at least one blind via is formed in the wiring carrying substrate. Next, the wiring carrying substrate is laminated to another wiring carrying substrate via an insulation layer. The insulation layer is disposed between the wiring layers of the wiring carrying substrates and full fills the blind via. Next, parts of the carry substrates are removed to expose the insulation layer in the blind via. Next, a conductive pillar connected between the wiring layers is formed. Next, the rest carry substrates are removed.

Abstract: A circuit structure of a circuit board includes a dielectric layer, a number of first circuits, and a number of second circuits. The dielectric layer has a surface and an intaglio pattern. The first circuits are disposed on the surface of the dielectric layer. The second circuits are disposed in the intaglio pattern of the dielectric layer. Line widths of the second circuits are smaller than line widths of the first circuits, and a distance between every two of the adjacent second circuits is shorter than a distance between every two of the adjacent first circuits.

Abstract: A wiring board including two wiring layers and a flexible core layer is provided. The flexible core layer is disposed between the wiring layers, and the flexible core layer is an insulator. A flexure of the wiring board is between 0 degree and 170 degrees.

Abstract: A circuit board structure including a circuit board main body and an injection molded three-dimensional circuit device encapsulating at least a portion of the circuit board main body is provided. The three-dimensional circuit device includes a molded plastic body having a non-plate type, stereo structure, on which a three-dimensional pattern is also fabricated. The three-dimensional pattern is interconnected with a contact pad on the circuit board main body through a conductive via.

Abstract: A substrate including a first patterned metallic layer, a second patterned metallic layer and an insulator is provided. One side of the first patterned metallic layer is connected to a corresponding side of the second patterned metallic layer. The first patterned metallic layer and the second patterned metallic layer are formed as a whole. The insulator fills the gaps in the first patterned metallic layer and the gaps in the second patterned metallic layer.

Abstract: A circuit board including a first dielectric layer having a first surface and a second surface, a first circuit layer, a second dielectric layer, and a second circuit layer is provided. At least one trench is formed on the first surface, and the first circuit layer is formed on an inside wall of the trench. In addition, the second dielectric layer is disposed in the trench, and covers the first circuit layer. The second circuit layer is disposed in the trench, and the second dielectric layer is located between the first circuit layer and the second circuit layer. A manufacturing method of the circuit board is further provided.

Abstract: A method of fabricating a substrate includes following steps. First, a metallic panel having a first surface and a second surface is provided. A first half-etching process is carried out to etch the first surface of the metallic panel to a first depth so that a first patterned metallic layer is formed on the first surface. Next, a first insulating material is deposited into gaps in the first patterned metallic layer to form a first insulator. Thereafter, a second half-etching process is carried out to etch the second surface of the metallic panel to a second depth and expose at least a portion of the first insulator so that a second patterned metallic layer is formed on the second surface. The first depth and the second depth together equal the thickness of the metallic panel.

Abstract: A substrate having a metallic panel and an insulator is provided. The metallic panel comprises two patterned metallic layers. The two patterned metallic layers are disposed on the respective sides of the metallic panel and connected with each other. The metallic panel has an upper surface and a lower surface. The heat dissipating pathway between the upper and the lower surface is constructed using a metal. The insulator is positioned in the gaps between the patterned metallic layers.

Abstract: A process for forming a circuit structure includes providing a first composite-layer structure at first. A second composite-layer structure is then provided. The first composite-layer structure, a second dielectric layer and the second composite-layer structure are pressed so that a second circuit pattern and an independent via pad are embedded in the second dielectric layer, and the second dielectric layer is connected to the first dielectric layer. A first carrier substrate and a second carrier substrate are removed to expose a first circuit pattern and the second circuit pattern. At least one first opening that passes through the second dielectric layer and exposes the independent via pad is formed, and the first opening is filled with a conductive material to form a second conductive via that connects the independent via pad and a second via pad.

Abstract: A method of forming solder mask, suitable for forming a solder mask on the surface of a wiring board, is provided. The surface of the wiring board includes a first region and a second region, and the surface of the wiring board has a wiring pattern thereon. The method includes forming a first sub solder mask in the first region on the surface of the wiring board by performing a screen-printing or a photolithographic process, and forming a second sub solder mask in the second region on the surface of the wiring board by performing an ink-jet printing process. The method not only improves the precision of the solder mask alignment on the wiring board and its reliability, but also increases the production rate and lowers the manufacturing cost.

Abstract: A circuit structure has a first dielectric layer, a first circuit pattern embedded in the first dielectric layer and having a first via pad, a first conductive via passing through the first dielectric layer and connecting to the first via pad, and an independent via pad disposed on a surface of the first dielectric layer away from the first via pad and connecting to one end of the first conductive via. The circuit structure further has a second dielectric layer disposed over the surface of the first dielectric layer where the independent via pad is disposed, a second conductive via passing through the second dielectric layer and connecting to the independent via pad, and a second circuit pattern embedded in the second dielectric layer, located at a surface thereof away from the independent via pad, and having a second via pad connected to the second conductive via.

Abstract: A selective metal surface treatment process of a circuit board, which has a solder mask and a multiple of selective metal treatment surface areas, wherein the solder mask covers the surface of the circuit board but exposes the selective metal surface treatment areas, is provided. The selective metal surface treatment process includes using a printhead to selectively print a resist on a selective metal surface treatment area, performing a surface treatment of the other selective metal surface treatment areas, and removing the resist. A selective metal surface treatment apparatus used for performing the selective metal surface treatment process of the circuit board is also provided. Through the present invention, unnecessary waste of the materials in the process is reduced and the processing time is shortened.

Abstract: A manufacturing process and an apparatus for printing imprint on defective board are provided. An automatic printing device is used for replacing operator, so as to reduce manpower and to increase the correctness and veracity of defect mark printing. The manufacturing process includes the following steps: first, an image sensor captures an image of a defect mark and transmits the image to a processing unit for data processing. Next, the data is compared, and an inkjet head is notified of the correct printing position to print ink on the customer identification mark of the printed circuit board.

Abstract: A method for fabricating a double-sided or multi-layer printed circuit board (PCB) by ink-jet printing that includes providing a substrate, forming a first self-assembly membrane (SAM) on at least one side of the substrate, forming a non-adhesive membrane on the first SAM, forming at least one microhole in the substrate, forming a second SAM on a surface of the microhole, providing catalyst particles on the at least one side of the substrate and on the surface of the microhole, and forming a catalyst circuit pattern on the substrate.

Abstract: An apparatus for metal plating on a substrate with through-holes includes a chamber that the substrate is disposed inside the chamber to be divided into two sections. A pressure generator and a pressure controller are connected to this and correspond to two sides of the substrate respectively. The pressure generator is used for pumping a electrolyte flowed parallel to the surface of the substrate into the chamber. The pressure controller is used for channeling the electrolyte off the chamber and controlling the pressure differences between the two sides of the substrate. So that the electrolyte flowed parallel to the surface of the substrate is pumped by the pressure generator and it passes several through-holes to control the thickness of metal plating on the.substrate and inner walls of the through-holes.

Abstract: A method of forming solder mask, suitable for forming a solder mask on the surface of a wiring board, is provided. The surface of the wiring board includes a first region and a second region, and the surface of the wiring board has a wiring pattern thereon. The method includes forming a first sub solder mask in the first region on the surface of the wiring board by performing a screen-printing or a photolithographic process, and forming a second sub solder mask in the second region on the surface of the wiring board by performing an ink-jet printing process. The method not only improves the precision of the solder mask alignment on the wiring board and its reliability, but also increases the production rate and lowers the manufacturing cost.

Abstract: A method for inspecting and mending defects of photo-resist is provided. It includes the following steps. First, a substrate having at least one film is provided. Then, a patterned photo-resist layer is formed on the film. Next, an optical inspection procedure is performed to inspect whether the patterned photo-resist layer has defects or not. If the patterned photo-resist layer has defects, the defects are classified into gaps and protrusions and then the gaps and the protrusions are positioned. If the patterned photo-resist layer has defects such as gaps, an ink-jet printing method, for example, is performed on the patterned photo-resist layer to fill the gaps up. If the patterned photo-resist layer has defects such as protrusions, a laser method, for example, is performed on the patterned photo-resist layer to remove the protrusions. So the defects of the patterned photo-resist layer can be mended.