Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Semiconductor Software Co., Ltd

Yasuhiro Murasawa

Shigeo Onoda

Toshinobu Banjo

Tetsuro Washida

Yoshiharu Takahashi

Hiroshi Otani

Hitoshi Toda

Katsunori Ochi

Makoto Omori

Jun Ohbuchi

Hajime Maeda

Yasushi Kasatani

Hideya Yagoura

Tomomi Morii

Teru Hirata

Hiroshi Sawano

Syuniti Uemura

Hiroaki Yamashita

Tadashi Ichimasa

A method for mass producing thin IC cards having beautiful surfaces using a non-polluting polyethylene telephthalate material in which a hot-melt type adhesive is applied and formed on a joint surface of a cover sheet formed from polyethylene telephthalate, and in which a hot-melt adhesive is used as a sealing adhesive at an opening of a core sheet that is held by the cover sheets. To improve the heat-resisting bonding strength of this hot-melt adhesive, a thermosetting resin may be mixed with the hot-melt adhesive.

Method for producing thin IC cards and construction thereof

In an IC card, a frame for connecting a board for mounting electronics components is covered by upper and lower panels. A main connector for connecting the IC card to a computer is provided at one end of the frame. Further, one or more subconnectors to be connected to external systems are provided on the board and the pins of the subconnectors extend towards openings in the upper panel. The subconnectors are supported between the board and the upper panel. Thus, various kinds of subconnectors for various functions can be used with the IC card. In a modified example, a subconnector is provided opposite the main connector on the upper panel, and the pins thereof extend in a direction parallel to the board.

IC card

A jig for dual-side mounting PC boards is composed of a board table which has a board supporting surface, a component receiving hole and a board sucking holes, spacers for placement in the component receiving holes, and a platform having a pressure-reducing space communicating with the board sucking holes. The spacers each have a protrusion for engagement with a spacer positioning hole made in the bottom of the component receiving hole.

Jig for dual-side mounting PC boards

IC card of the present invention consists of a frame including a rectangular bottom plate and a U-shaped side wall along the three edges of the bottom plate; a connector fixed to the open side of the frame with the U-shaped side wall; a board module at least one including printed-circuit boards with electronic components mounted thereon, combined with the connector, and inserted in the frame; and a metal panel for sealing off the board module inside the frame with the connector fixed thereto.

A tape carrier structure (T1,T2) for a tape carrier package on which at least one semiconductor chip (1) is mounted, the tape carrier structure (T1,T2) having a polyimide tape (3) and leads (2) joined onto the polyimide tape (3), an end of each of the leads (2) being connected to one of connecting pads corresponding thereto, the connecting pads being provided on the semiconductor chip (1), wherein the polyimide tape (3) has a facing portion (3a) which is situated so as to face to the semiconductor chip (1) except the connecting pads on condition that the semiconductor chip (1) is mounted on the tape carrier package.

Tape carrier structure for a tape carrier package

An IC card includes a substrate having a metal fiber resin material layer made of a mixture of a resin and metal fibers and a conductive pattern. The conductive pattern and the metal fiber resin material layer are electrically insulated from each other by a resist film. Heat radiation and mechanical strength of the IC card are enhanced.

IC card including a substrate having improved strength and heat

Cracks in solder connecting terminal leads of an IC to a circuit board are prevented by reducing the stress due to the difference in the coefficients of thermal expansion of a pair of IC packages mounted on opposite surfaces of a circuit board and the circuit board. In this invention, the position of an IC package mounted on the upper surface of a circuit board is spaced from the position of an IC package mounted on the lower surface of the circuit board. Alternatively, the IC packages are mounted on the upper and lower surfaces in directions which are substantially orthogonal. Alternatively, the IC packages are mounted such that the positions of lead portions of one of the upper IC packages are spaced from the positions of the lead portions of the other IC package by a distance which is at least 2.4 times the thickness of the circuit board.

Thermal stress resistant semiconductor device mounting arrangement

A semiconductor device includes a package substrate, a first IC package having external lead terminals which are downwardly bent with respect to a plane surface of the package and a second IC package having external lead terminals which are upwardly bent with respect to a plane surface of the package. These packages are disposed on one surface of the package substrate parallel to each other. One or more pairs of the external lead terminals of the first and second IC packages, which face each other and are electrically connected with to each other, are disposed on the same mount pads provided on the package substrate. Therefore, wires for connecting those lead terminals can be dispensed with and the other external lead terminals can be connected by simply drawing around wires without providing through holes. In addition, no positional deviation between the two packages, occurs and no solder bridges are created during soldering.

Packaged semiconductor device assembly including two interconnected

A printed circuit board includes a printed wiring board and a terminal board bonded to the printed wiring boards. These boards contain reinforcing fibers, and the directions of the reinforcing fibers in both boards are the same whereby coefficients of thermal expansion of both boards are substantially equal to each other. Thus, it is possible to prevent the circuit board from bending and to get a planar arrangement of electrode terminals in a case where the terminal board is bonded to the printed wiring board with solder.

Printed circuit board

A semiconductor device card includes a frame on which a semiconductor module may be mounted and a protection panel adhered to the frame. The frame includes pairs of offset grooves along each of two opposed sides and the protection panel includes pairs of offset flanges along each of two opposed edges of the panel. The protection panel flanges are inserted into the grooves in the frame and adhered to the frame in the grooves. Thus, a large attached area for ensuring good adhesive strength between the frame and the protection panel is achieved.

Semiconductor device card

A semiconductor device mounted on a substrate. Outer leads, partially resin-molded, have a greater height above the mounting surface than that of a conventional device. Specifically, each lead projecting from the molded resin has a bent portion which is convex in the direction opposite to the mounting surface, and the length of the lead beyond the bent portion is greater than the distance from the lead portion adjacent to the resin portion of the lead to the mounting surface. The long leads improve reliability during, e.g., heat cycle, tests. In another embodiment, outer leads, partially resin-molded, have reverse J-shaped bent portions, each with a distal end positioned away from the resin. When the bent portions serve as soldering portions, the soldering condition can be easily checked.

Semiconductor device

A memory card having: a card-like package; a semiconductor module disposed within the package; a plurality of electrode terminals mounted on the package for external electrical connection of the semiconductor module in the package to an external circuit; a metallic shutter disposed on the package and movable between an open position in which the electrode terminals are exposed for the electrical connection and a closed position in which the electrode terminals are covered; and an insulating layer formed on a surface of the shutter which faces the electrodes.

Memory card

A memory card comprises a plastic outer package which houses a semiconductor device and an electrical connector. The outer package comprises a plurality of package sections which are stacked atop one another and bonded together along connecting surfaces formed on the outer peripheries of the package sections. At least one of the connecting surface of each pair of adjoining package sections has an overflow groove for bonding agent formed therein which prevents the bonding agent from being forced to the outside of the outer package when the package sections are bonded together.

Memory card housing

An IC card having a package in which a semiconductor device is accommodated, a plurality of electrode terminals disposed on a surface of the package near the front end thereof in the direction in which the IC card is inserted into a connector in an external device, a shutter supported on the surface of a front portion of the package for exposing and covering the electrode terminals, the shutter having a width smaller than that of the package as measured in the direction perpendicular to the direction of insertion into the connector, a pair of guide projections formed on the shutter at both-sides thereof to extend into the package, the guide projections functioning to open the shutter by abutting against a pair of shutter receiving pins disposed in the insertion hole of the connector when the package is inserted into the connector, and a pair of guide grooves adapted to guide the guide projections, the guide grooves being formed in both sides of the front portion of the surface of the package to be within the side surfaces thereof, the guide grooves extending from the front side of the package in the insertion direction thereof.

IC card including enclosed sliding shutter

A memory card comprises a plastic outer package which houses a semiconductor device and electrical connector. The outer package comprises a plurality of package sections which are stacked atop one another and bonded together along connecting surfaces formed on the outer peripheries of the package sections. The connecting surface of one package section of each pair of adjoining package sections has a projecting engaging portion formed thereon, and the connecting surface of the other package section of the pair of adjoining package sections has a recessed engaging portion formed therein which engages with the projecting engaging portion of the adjoining package section.

Growing community of inventors

Itami, Japan

Yasuhiro Murasawa