Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Kunio Kishimoto

Toshiaki Takenaka

Shinji Nakamura

Toshihiro Nishii

Shigeru Yamane

Hideaki Komoda

Akihiro Miura

Fumio Echigo

Toshikazu Kondo

Yukihiro Hiraishi

Yoshihiro Kawakita

Toshikazu Kondou

A highly reliable and productive manufacturing method of boards and a manufacturing apparatus are provided. The manufacturing apparatus includes heater-punches () and () disposed above and under pressuring holes () provided on positioning stage () which positions and laminates board materials. The apparatus also includes a supplying and discharging means of a mold-releasing sheet, and the means is formed of supply reel (), take-up reel (), and guide rolls () and (). The sheet is supplied and discharged passing between heater-punches () placed above pressuring holes () and heater-punches () placed under pressuring holes ().

Manufacturing method of boards, mold-releasing sheet, manufacturing apparatus for board

A mask film, where squeegee cleaning part has been formed at a predetermined position, and another mask film are attached to both sides of a substrate. A through-hole is formed by using a laser, and conductive paste is filled into the through-hole by using a squeezing method. As discussed above, a paste-residue can be prevented on the through-hole, so that a circuit board having high quality of connection can be obtained.

Method and apparatus for manufacturing circuit board

In a method of manufacturing a circuit forming board, a first sheet having a first direction is transferred in a second direction, so that the first direction of the first sheet is parallel to the second direction. Films are stuck onto both surfaces of the first sheet while transferring the first sheet in a third direction orthogonal to the first direction of the first sheet. This method allows a connecting member, such as conductive paste, to electrically couple between layers of the circuit forming board.

Method of manufacturing circuit forming board

It is possible to obtain a clean high-quality circuit board by removing affected material and foreign matter produced when a hole is formed. A manufacturing method of the circuit board includes (a) preparing a film-coated board material by bonding a film material as a mask to a board material, (b) forming a hole in the film-coated board material by applying a laser beam thereto, and (c) selectively removing the unnecessary material sticking to the film-coated board material from the film-coated board material by supersonic cleaning without peeling the film material off the board material. Unnecessary material such as foreign matter is produced when the hole is formed, and the unnecessary material sticks to the board material. After removal of such unnecessary material, a conductive material is disposed in the hole, using the film material as a mask, and the film material is later removed from the board material.

Method of manufacturing a circuit board and its manufacturing apparatus

A mask film includes a base material, a parting layer and a non-parting portion placed on the base material. Accordingly, an optimum adhesion strength of the mask film and a prepreg sheet can be maintained, and peeling between the mask film and prepreg sheet can be prevented. Further, by preventing the fusing adhesion between the mask film and prepreg sheet due to heat generated when forming penetration holes, a circuit board having an excellent quality is obtained.

Mask film, its manufacturing method, and manufacturing method of circuit board using the same

A circuit board having stable connection resistance can be obtained. The multi-layer circuit board includes the steps of making through-holes in a incompressible substrate having films on either side thereof via a bonding layer; filling conductive paste into the through-holes; removing the films from the substrate; laminating metallic foils to either side of the substrate and heating same under pressures to harden the bonding layer, bonding the metallic foils to the substrate and electrically connecting the sides of the substrate to each other; and forming a circuit pattern by machining the metallic foils.

Circuit board and method of manufacturing same

A method and system of cleaning to remove cutting dust and the like generated and adhering to a board material () during drilling for electrical connection, and drying the board material, in a process of manufacturing a circuit board for small electronic equipment and the like. A large amount of board materials can be treated without receiving thermal damage by performing the steps of: placing sheets of the board material that have absorbed moisture resulting from cleaning, like a stack in a vacuum chamber (); and drying the board material by repeating evacuation and pressurization under predetermined conditions while heating the board material.

Method and system of drying materials and method of manufacturing circuit boards using the same

A circuit board having stable connection resistance can be obtained . The multi-layer circuit board includes the steps of making through-holes in a incompressible substrate having films on either side thereof via a bonding layer; filling conductive paste into the through-holes; removing the films from the substrate; laminating metallic foils to either side of the substrate and heating same under pressures to harden the bonding layer, bonding the metallic foils to the substrate and electrically connecting the sides of the substrate to each other; and forming a circuit pattern by machining the metallic foils.

Multi-layer circuit board having at least two or more circuit patterns connected

Mask film having a non-parting portion

An inner layer circuit board with a convex inner layer circuit pattern having a predetermined thickness, a prepreg sheet having conductive material disposed in a plurality of through-holes and metallic foil are laminated to a substrate, and the laminated board is heated under pressures. After that, a laminated circuit pattern is formed by machining the metallic foil. In such multi-layer circuit board, a smoothing layer is disposed on a concave portion where no inner layer circuit pattern of the inner layer circuit board is formed. In this way, the conductive materials disposed in a plurality of through-holes are uniformly compressed. As a result, the connection resistance between the inner circuit pattern and the laminated circuit pattern becomes stabilized.

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Osaka, Japan

Kunio Kishimoto