Matsushita Electric Industrial Co., Ltd.

Haruto Nagata

Masanori Minamio

Kenichiro Suetsugu

Hiroaki Onishi

Tetsushi Nishio

Masato Hirano

Kouichi Yamauchi

Katsutoshi Shimizu

A solid-state imaging device is manufactured according to the steps below. A lattice-shaped rib forming member, which is an aggregation of a plurality of frame-shaped ribs for configuring a plurality of solid-state imaging devices, is resin-molded. An aggregate wiring board is used, which has regions corresponding to a plurality of the wiring boards, and in which a plurality of the wiring members are provided in each of the regions, and the imaging element is fastened to each region of the aggregate wiring board and the electrodes of the imaging elements and the wiring members are connected by a thin metal wire. The rib forming member is placed on the wiring board face and joined to the wiring board face, so that the imaging element is disposed inside the lattice elements of the rib forming member. The transparent plate is fastened to an upper face of the rib forming member, and each housing is cut in a direction perpendicular to the base portion, and in a direction dividing into two the width of the rib forming member, and separating the solid-state imaging devices into individual pieces It is possible to make a low cost housing, avoiding deformations caused by a difference in thermal expansion between the wiring board and the ribs made of a resin, when forming a plurality of housings together.

Method for manufacturing solid-state imaging devices

A resin-encapsulated semiconductor device includes: a semiconductor chip on a surface of which a group of electrodes is disposed; a plurality of inner leads arranged along a periphery of the semiconductor chip; connecting members for connecting the electrodes of the semiconductor chip with the respective inner leads, an encapsulating resin for encapsulating surfaces of the semiconductor chip and the connecting members; and external electrodes exposed from the encapsulating resin. Each of the inner leads extends across the periphery of the semiconductor chip from an internal side to an external side of the periphery, and includes a protruded portion provided on a surface of the inner lead on an external side relative to the periphery of the semiconductor chip, the protruded portion being protruded in a thickness direction. Conductive bumps as the connecting members on the electrodes of the semiconductor chip are connected with internal portions of the respective inner leads, the internal portions being positioned inward relative to the protruded portions. The external electrodes are formed on surfaces of the protruded portions, and tip ends of the external electrodes are protruded relative to a back face of the semiconductor chip.

Lead frame, resin-encapsulated semiconductor device, and method of producing the same

A method for mounting on integrated circuit having many leads with narrow pitches on the printed circuit board. In a method, a resist layer is formed between lands on the board, and solder paste is applied with a stencil to the lands so that the positions of the solder paste on the lands are staggered. Then, leads of the integrated circuit are positioned on the lands. Then, reflow soldering of the leads to the lands is performed with the solder paste in a nitrogen environment. In a different embodiment, each land includes a first portion and a second portion having a width narrower than the first portion, and the second portions are arranged staggeredly among the lands. Then, solder paste is applied to the first portions having the wider width. Then, reflow soldering of the leads to the lands is performed with the solder paste in a nitrogen environment. If solder including bismuth is used, reflow soldering can be performed in ambient environment.

Method of mounting electronics component

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Sakai, Japan

Haruto Nagata