Abstract:
On réalise une carte à puce (1) mixte selon deux procédés. La carte à puce comporte deux couches (1.1,1.2) entre lesquelles se loge un circuit électrique secondaire (1.3). Un micromodule (2), encastré dans la carte réalise un circuit électrique principal. Ce circuit électrique principal joue le rôle d'interface avec un lecteur de carte à puce. Des puits de connexion (13,14) entre les deux circuits ne sont pas réalisés de la même façon et au même moment selon chaque procédé. Mais finalement ils sont remplis de colle conductrice qui permet d'établir des connexions entre les deux circuits. On propose ainsi deux procédés de réalisation de cartes mixtes dont un permet notamment d'améliorer le taux de réussite des connexions entre un circuit principal défini par un micromodule et un circuit d'une couche enterrée de la carte.
Abstract:
The invention relates to a support element for an integrated circuit module to be fitted in a chip card comprising: a plate-shaped support body on whose one front flat side metallic contact surfaces are arranged, and on whose rear flat side the integrated circuit module is arranged; a protective layer which covers the integrated circuit module and which is made of an encapsulating material, and; an adhesive surface which is applied to the rear of the support body and which is provided for fastening the support element to the chip card. According to the invention, the adhesive layer covers the entire rear surface of the support element as an all-over adhesive layer. This inventive embodiment enables the production costs of said support elements to be significantly reduced. The invention also relates to a method for producing such a support element in which the all-over adhesive layer is attached to the support element by a pressing process effected by a pressing device having a pressing surface that is made of an elastic material. The pressing surface is flexible enough to permit the support element to submerge, in an all-over manner with the rear thereof which is provided with the integrated circuit module and with the protective layer that covers the same, into the pressing surface.
Abstract:
A method of forming circuit lines on a substrate by applying a roughened conductive metal layer using a copper foil carrier. The copper foil is etched away, leaving the roughened conductive metal embedded in the surface of the substrate. The conductive metal may be treated to remove an oxide layer. A photoresist may also be applied over the treated conductive metal layer to define a fine line circuit pattern. The photoresist defining the fine line circuit pattern is then removed to expose trenches in accordance with the desired circuit pattern. Copper is applied into the trenches over the exposed conductive metal, and the remaining photoresist, and conductive metal underlying the remaining photoresist, is removed to finish the fine line circuit pattern.
Abstract:
A module of a combination card can be incorporated into a card body with solder being easily melted, and heat transmission to portions other than the antenna connection terminals is reduced. A card body (1) is provided with an antenna. The module (20) includes a substrate (7) which has a terminal surface on which at least one external connection terminal (4) is formed and a mounting surface opposite to the terminal surface. An IC chip (8) is mounted on the mounting surface. The module includes at least one antenna connection terminal (21a, 21b) located on the mounting surface. The antenna connection terminal (21a) is connected to the antenna, and at least a part (21b) of the antenna connection terminal (21a, 21b) is exposed on the terminal surface.
Abstract:
The specification describes a recessed chip IC package in which the IC chip is bonded to a translator, and power and ground planes for IC power and ground interconnections are formed on separate interconnect levels of the translator. The multilevel interconnection capability of the translator allows crossovers, and allows power and ground pins from the IC chip to be both isolated from signal I/Os, and consolidated into fewer interconnections going to the next board level. The translator also has a large area outboard of the IC chip area to allow fan out from high pin count chips to large pitch interconnection sites for interconnection to the next board level.
Abstract:
There is described a high-frequency module comprising a high-frequency device-mounting package and an external circuit board characterized in that said high-frequency device-mounting package (A) includes a dielectric substrate (1) having a first grounding layer (4) contained therein, said dielectric substrate (1) mounting a high-frequency device (2) on one surface thereof and having, formed on one surface thereof, first high-frequency signal transmission lines (3) connected to said high-frequency device (2), and having, formed on the other surface thereof, second high-frequency signal transmission lines (7) coupled to said first high-frequency signal transmission lines (3), said external circuit board (B) is constituted by a dielectric board (20) having third high-frequency signal transmission lines (25) and a second grounding layer (26), said third high-frequency signal transmission lines (25) being formed on one surface of said dielectric board (20), and said second grounding layer (26) being formed on the other surface of said dielectric board (20) or inside thereof; and said high-frequency device-mounting package (A) and said external circuit board (B) are arranged side by side, and the second high-frequency signal transmission lines (7) of the high-frequency device-mounting package (A) are electrically connected to the third high-frequency signal transmission lines (25) of the external circuit board (B) through linear electrically conducting members (31). The patterns of the second high-frequency signal transmission lines on the side of the high-frequency device-mounting package can be easily aligned with the patterns of the third high-frequency signal transmission lines on the side of the external circuit board, effectively reducing the transmission loss at the junction portions of the lines.
Abstract:
A method and apparatus for vertically interconnecting stacked silicon segments (36) is disclosed. Each segment (36) includes a plurality of adjacent dies on a semiconductor wafer. The plurality of dies on a segment are interconnected using one or more layers of metal interconnects which extend to all four sides of the segment to provide edge bonding pads (42) for external electrical connection points. Each segment is cut from the backside of the wafer using a bevel cut to provide four inwardly sloping edge walls (102) on each of the segments (36). After the segments are cut from the wafer, the segments are placed on top of one another to form a stack (112). Vertically adjacent segments (36) in the stack (112) are electrically interconnected by applying electrically conductive epoxy traces (130) to all four sides of the stack. The inwardly sloping edge walls (102) of each of the segments (36) in the stack (112) provide a recess which allows the electrically conductive epoxy to access the edge bonding pads and lateral circuits on each of the segments once the segments are stacked.
Abstract:
A method and apparatus for vertically interconnecting stacked silicon segments (36) is disclosed. Each segment (36) includes a plurality of adjacent dies on a semiconductor wafer. The plurality of dies on a segment are interconnected using one or more layers of metal interconnects which extend to all four sides of the segment to provide edge bonding pads (42) for external electrical connection points. Each segment is cut from the backside of the wafer using a bevel cut to provide four inwardly sloping edge walls (102) on each of the segments (36). After the segments are cut from the wafer, the segments are placed on top of one another to form a stack (112). Vertically adjacent segments (36) in the stack (112) are electrically interconnected by applying electrically conductive epoxy traces (130) to all four sides of the stack. The inwardly sloping edge walls (102) of each of the segments (36) in the stack (112) provide a recess which allows the electrically conductive epoxy to access the edge bonding pads and lateral circuits on each of the segments once the segments are stacked.
Abstract:
A semiconductor element package (P) and a semiconductor element package mounting distributing circuit basic plate, wherein the shield metallic layer (60) is provided on the flexible insulating basic plate for constituting the package, so that the semiconductor element (30) mounted on the flexible insulating basic plate (10) may be kept electromagnetically shielded positively with the shield metallic layer, whereby troublesome operation such as mounting the bulk high box shaped electromagnetic shield member on the outside of the semiconductor element package mounted on the distributing circuit basic plate as in the conventional one is not required, and, also, since the shield metallic layer is provided on the face, which is not formed with the lead patterns, of the flexible insulating basic plate, no influences are applied at all upon the construction of the land pattern and the mounting construction of the semiconductor element.
Abstract:
An adhesive interconnection device of Figure 2 (115) providing a simplified simultaneous electrical and mechanical interconnection using one preformed member, comprised of a pattern of non-pressure activated electrically conductive adhesive members (140) and nonconductive adhesive members (145), which must be aligned with the conductive pads of at least two planar electrical devices (100 and 105). Sandwiching the device (115) between at least two electrical devices causes simultaneous electrical conduction paths and mechanical bonds (230) between the two electrical devices. An additional heat curing step may be introduced to achieve the proper conductivity level in the electrically conductive members required for a specific application.