Matsushita Electric Industrial Co., Ltd.

Keiji Saeki

Yoshifumi Kitayama

Kazuhiro Mori

Yoshihiko Misawa

Takashi Akiguchi

Koichi Morita

Shinichi Kudo

Akira Kabeshita

Takao Inoue

Junji Ikeda

Kazuhiro Nobori

Kazuto Nishida

Yukio Maeda

Nobuhisa Watanabe

Setsuo Horimoto

Hachiro Nakatsuji

Schuichi Murakami

Chuichi Matsuda

Wakahata Tamotsu

When a semiconductor chip is mounted on a wiring substrate, an end of a metallic wire fed through a capillary is first fused to form a ball, which is in turn pressed against and bonded to an electrode pad formed on a semiconductor chip. The metallic wire is then cut at a location in the proximity of the ball so that a portion of the metallic wire remains as a protruding contact on the ball. The protruding contact is pressed against a shaping platform coated with a paste-like electrically-conductive adhesive film to thereby cause the protruding contact to have a given height and transfer a portion of the adhesive film to the protruding contact. The protruding contact is eventually bonded to an electrically-conductive film formed on the wiring substrate via the transferred portion of the adhesive film.

Method of mounting a semiconductor chip on a wiring substrate

An electronic chip component includes an electrode formed on a wafer, a passivation film formed on the water, and an organic protective film covering an entire surface of exposed portions of the electrode and the passivation film. Such component is packed in a package including a carrier tape having therethrough a space for receiving the component with one end of such space open. A cover is applied to close the open end of the space after the component is inserted therein.

Method of packaging electronic chip component and method of bonding of

An IC component mounting method includes sucking each of different types of IC components at a supply position to which the IC component having an electrode-provided face thereof to be bonded to a circuit board, recognizing an image of the IC component to detect a sucking position at which a sucking nozzle does not interfere with an electrode of the IC component, detecting a height of the sucking position, positioning the sucking nozzle at the sucking position while the position of the sucking nozzle in a vertical direction is controlled, sucking the IC component by a mounting head, recognizing a position of the IC component sucked by the mounting head, and recognizing a reference position of the circuit board or an IC component-mounting position thereof, and positioning the IC component at the IC component-mounting position of the circuit board and then mounting the IC component on the circuit board.

IC component mounting method and apparatus

An electronic chip component includes an electrode formed on a wafer, a passivation film formed on the wafer, and an organic protective film covering an entire surface of exposed portions of the electrode and the passivation film. A package for packing the component includes a carrier tape having therethrough a space for receiving the component with one end or side of the space opened, and a cover tape for closing the open end of the space after the component is stored in the space. A method for packing the component includes the steps of storing the component in the space of the carrier tape with one end of the space opened, and closing the open end of the space with the cover tape.

Electronic chip component with passivation film and organic protective

A method for bonding leads of an IC component with electrodes of a circuit board includes the steps of using a mounting device to hold the IC component with flat portions of the leads inclined downward, mounting the IC component on the circuit board at a predetermined position thereof with the IC component held by the mounting device, moving the mounting device toward the circuit board to compress the IC component against the circuit board at the predetermined position while allowing the leads to flex to accommodate for nonuniformity in the heights of metal pieces to be bonded with the electrodes and bending of the circuit board. In this manner, the flat portions of the leads are brought into close contact with the electrodes. The leads are then irradiated with an optical beam so as to melt the metal pieces of the electrodes for bonding of the leads to the circuit board.

Method for bonding lead of IC component with electrode

At least one chip type component is soldered to a printed circuit board by independent first and second nozzles which spout molten solder so as to form respective first and second solder waves, with the printed circuit board sequentially passed through the first and second nozzles. The first and second solder waves define therebetween a space and flow at least in a direction of movement of the printed circuit board and in a direction counter to the direction of movement of the printed circuit board, respectively. The second nozzle is disposed at a level higher than the first nozzle such that the printed circuit board is moved obliquely upwardly.

Process and apparatus for soldering printed circuit boards

Method and apparatus for drawing thick film circuit

Method and apparatus for drawing a thick film circuit

A photosetting resin composition containing more than 10% by weight of one or more resins each having more than 3 functional groups--acryloyl or methacryloyl radicals--and a sensitizer. Since the compositions contain more than 10% by weight of one or more resins each having more than three functional groups, they exhibit very satisfactory and well balanced resistance-to-solder (JISC-6481, 260.degree. C., 10 sec), flexural strength (JISP-8115, 0.38R, 180.degree. bending) and adhesion (JISD-0202, chequer pattern test).

Photosetting resin compositions

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Kobe, Japan

Keiji Saeki