Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Shotaro Nagaike

Yoji Inomata

Taku Yamada

Toshihiro Higuchi

A circuit board module includes: a board having a mounting surface; an electronic component mounted on the mounting surface; a frame which is mounted on the mounting surface so as to surround the electronic component; a resin portion which is provided inside the frame and closely contacts the electronic component, the mounting surface, and the frame; and a lid portion which covers the electronic component, and which is connected to the frame. The lid portion includes a flat portion which is provided at a region containing an area corresponding to the electronic component not covered with the resin portion and which protrudes outward more than the other regions.

Circuit board module and electronic apparatus

A portable electronic device in which microswitches () controlled by operation buttons () are mounted on one side of a printed circuit board (), and circuit elements accommodated in BGA packages (), () and () are soldered on the other side of the printed circuit board. In the portable electronic device, a shield wall () for surrounding the BGA packages (), () and () is mounted on the printed circuit board (), a first protrusion portion () for holding down the shield wall () on the printed circuit board () is protruded from a case () of the portable electronic device (), and second protrusion portion () for holding down surfaces of the BGA packages (); () and () on the printed circuit board () is protruded from the case () of the portable electronic device (). With such a construction, the BGA packages are prevented from being peeled off from the printed circuit board (). Further, even when the push buttons are frequently depressed in playing a game, the soldering parts of the BGA packages mounted on the back side of the operation button can be maintained in good conditions.

Growing community of inventors

Kanagawa, Japan

Shotaro Nagaike