Mitsubishi Denki Kabushiki Kaisha

Syojiro Kodai

Katsunori Ochi

Osamu Murakami

Makoto Kobayashi

Tuguo Kurisu

Fumiaki Baba

Seiji Takemura

Akira Yamada

Hiroshi Gamo

Noriaki Fujii

Bujirou Kobayashi

Tsuguo Kurisu

A method of producing a thin IC card having a built-in battery includes forming a through-hole including an edge in a circuit board having obverse and reverse main surfaces, a circuit pattern being present on a first of the main surfaces of the circuit board; mounting a functional part on the first of the main surfaces of the circuit board; molding said circuit board and said functional part in a resin with a second main surface of said circuit exposed and forming a battery lodging section in the resin molding defined by the through-hole; and mounting a battery in said battery lodging section and electrically connecting the circuit pattern to the battery.

Method of making IC card

A thin IC card includes a circuit board on which functional parts are mounted and a through-hole defining an edge of a battery lodging section in which a battery is disposed, the circuit board being embedded in a molding-resin section with the reverse surface of the board exposed. The battery lodging section is aligned with the through-hole of the circuit board. Electrical connections between the circuit board and the battery are effected in a recess or cutouts in the circuit board. The battery is embedded in the lodging section using an expandable resin to make the card surface flat.

Thin IC card

A method for producing an IC card including filling a confined space with a mixture including a foaming resin, the mixture having not been foamed yet, the space being confined by a frame having cut-out portions on inner edges and at least one through-hole passing through the frame in the lateral direction between the inside and the outside of the frame, a circuit board on which functional components are mounted and having edges fitted to one of the cut-out portions of the frame so that the surface of the circuit board on which functional components are mounted faces inward, the frame and the circuit board forming a substantially flat outer surface, and a thin plate having edges fitted to another of the cut-out portions of the frame with the thin plate opposing the circuit board, the frame and the thin plate forming a substantially flat outer surface; foaming the mixture at a predetermined temperature for a predetermined time, thus filling the confined space with foamed resin, and thus making the foamed resin a structural member having mechanical strength, molding the frame, the circuit board, and the thin plate into one body; and removing excess foamed resin from the through-hole in the frame.

An IC card production method includes the steps of mounting a card board (12) having a through opening onto a lower mold (16) of molding dies (15), mounting a semiconductor module (2) onto the opening of said card board (12), tightening an upper die (17) of the molding dies (15) having a gate (19) onto a lower die (16), and molding by injecting resin (13) into the opening from the gate (19) in a state in which only an electrode terminal face (7) for external connection of the semiconductor module (2) is exposed. The IC card includes a card board (12) having a through opening, a semiconductor module (2) mounted onto this opening, and a molded resin (13) injected into said opening so that the resin moding is formed under such condition that only an electrode terminal face for external connection (7) of said semiconductor module (2) is made to expose.

Production method for an IC card

At least one part of a two-part container of a portable semiconductor device has an electronic part accommodating portion, a foamed resin accommodating portion provided at a peripheral edge portion of the container for accommodating an excess of foamed resin, and a coupling groove for coupling the electronic part accommodating portion to the foamed resin accommodating portion. Since the electronic parts and a circuit board are completely embedded in the device, a semiconductor device exhibiting excellent resistance to environment can be manufactured by a simple process.

Portable semiconductor device with resin

An IC card includes: a circuit board on which functional components are mounted; and a frame covered with a thin plate, the circuit board being disposed in the frame, the inside of the frame being filled with a foamed resin. As a result of the above arrangement, an IC card having a strong resistance to various external forces is produced. Furthermore, because it is possible to incorporate a surface material with a design in an integrally molded device, thus it is also possible to produce an IC card device having an excellent appearance.

IC card including frame with lateral hole for injecting encapsulating

In an IC card and a manufacturing method therefor, an adhesive is applied between core layers in the vicinity of an opening in which an IC module is placed. The core sheet layers held between adhesive layers can easily be deformed when heat and pressure are applied. Therefore, a gap formed between the card substrate and the IC module is filled. Furthermore, the gap from the IC module is narrower at the corners of the IC module than conventionally shaped openings. As a result, gaps at the corners of the IC module after integral molding are prevented. Therefore, the gap between the IC module and the card substrate can be reliably filled during molding.

Method of manufacturing IC card

An IC card comprises a card board having first and second major surfaces and a semiconductor module having an electrode terminal face. The semiconductor module is mounted in the card board, so that the electrode terminal face is exposed onto the first major surface of the card board. The card board comprises a board frame and a resin which is molded inside the board frame. Part of the semiconductor module surface which is opposite to the electrode terminal face, is covered with the resin.

Production method for an IC card and its IC card

IC card

A manufacturing method for a thin semiconductor device assembly includes forming an internal frame for positioning an IC module within an external frame that forms the periphery of the thin semiconductor device assembly, positioning the IC module in the internal frame so that an electrode terminal surface of the IC module is exposed, and fixing the IC module in place by filling the external and internal frames with resin.

Manufacturing method for thin semiconductor device assemblies

An IC card module includes a substrate one side of which is provided with a connection terminal; and a resin-sealed semiconductor IC which has been previously sealed by a resin. This connection terminal and the resin-sealed semiconductor IC are electrically connected to each other and are covered with a molding resin. Accordingly, reliable modules can be efficiently manufactured and readily mounted on IC card substrates.

IC card module

A method of producing an IC card in which an IC module is embedded, the method including preparing at least one first resin core sheet having a through hole at a position at which the IC module is to be embedded and at least one second resin core sheet having no hole at a position corresponding to the through hole, disposing adhesive sheet having an area greater than that of the through hole on the first resin core sheet covering the through hole, superposing the first and second resin core sheets with the adhesive sheet therebetween, fitting the IC module into the through hole of the first resin core sheet, heating and pressing the IC module and the resin core sheets to form an integral structure, and applying at least one surface protection sheet to the integral structure to complete the card.

Method of producing IC cards

An IC card includes a terminal board at one end of and projecting from an obverse side of the circuit board, an IC module mounted on the reverse side, all embedded in a plastic body with an electrode terminal exposed through the body.

An IC card used for conducting a transfer of information through a connector to a card reading out device is provided with electrode terminals for connection to the outside. A shutter is slidably provided within said card so as to cover said electrode terminals in the usual state. A hole provided at the front portion of said card receives a projection provided at said connector when the projection is inserted into the card. The shutter is retreated when it comes into contact with the projection of the connector thereby to expose said electrode terminals when the card is inserted into the connector.

Growing community of inventors

Itami, Japan

Syojiro Kodai