Abstract:
A method and device for interconnecting stacked semiconducting plates, in which each of the plates has an integrated circuit. The semiconducting plates (P) are stacked and made solid with each other. In one embodiment, their connecting contacts are connected by a wire (F) to any one of the faces of the stack except one (B), which is to be in contact with a printed circuit. Connections of the plates together and with the printed circuit is made on the faces (F.sub.V, F.sub.S, F.sub.L) of the stack.
Abstract:
The invention provides a device for distributing electric potentials for supplying a component with electric power, capable of being incorporated in the case in which the component is encapsulated.This device is in the form of a plate comprising conducting planes connected to external power supply potentials. This plate either forms the cover of the case or is placed inside the case above said component. Each of the conducting planes of the device is connected, outside the case, to the power supply potential and, inside the case, at multiple points to the component so as to distribute these potentials to the appropriate inputs/outputs thereof, thus reducing the number of inputs/outputs of the case.
Abstract:
A device and method are disclosed for connecting an electronic component so that it can be tested and mounted. According to the method, pads on the component are first connected to pads on a surrounding frame, by means of conducting wires. The component is tested by probes of the testing instruments to the pads of the surrounding frame. When the tests are done, the component and its frame is placed on the substrate on which it has to be mounted. The pads of the component are connected to pads on the substrate by the wires used for connection to the pads of the surrounding frame. After connection, the wires are cut between the substrate pads and the frame pads, and then the frame is removed.
Abstract:
A device for the protection of an electronic component and/or of a circuit, integrated in the carrier of the latter, against the disturbances (voltages) generated by an external electromagnetic field. It principally comprises an electrical connection (frame) whose conductivity increases considerably under the action of the external field, between each of the outlet connections of the component which is to be protected. This electrical connection is formed by a varistance and an electrode connected to the earth of the device.
Abstract:
A method for fabricating a re-built wafer which comprises chips having connection pads, comprising: fabricating a first wafer of chips, production on this wafer of a stack of at least one layer of redistribution of the pads of the chips on conductive tracks designed for the interconnection of the chips, this stack being designated the main RDL layer, cutting this wafer in order to obtain individual chips each furnished with their RDL layer, transferring the individual chips with their RDL layer to a sufficiently rigid support to remain flat during the following steps, which support is furnished with an adhesive layer, with the RDL layer on the adhesive layer, depositing a resin in order to encapsulate the chips, polymerizing the resin, removing the rigid support, depositing a single redistribution layer called a mini RDL in order to connect the conductive tracks of the main RDL layer up to interconnection contacts, through apertures made in the adhesive layer, the wafer comprising the polymerized resin, the chips with their RDL layer and the mini RDL being the re-built wafer.
Abstract:
A process for fabricating a reconstituted wafer that includes chips having connection pads on a front side of the chip, this process including positioning of the chips on an adhesive support, front side down on the support; deposition of a resin on the support in order to encapsulate the chips; and curing of the resin. Before deposition of the resin, the process includes bonding, onto the chips, a support wafer for positioning the chips, this support wafer having parts placed on one side of the chips.
Abstract:
A process for the wafer-scale fabrication of CMS electronic modules starts from a wafer with metallized outputs, comprising electronic components molded in resin and, on one side, the external outputs of the electronic components on which a nonoxidizable metal or alloy is deposited, and of a printed circuit provided with oxidizable metal or alloy contact pads. In the process, the wafer is cut in predetermined patterns for obtaining reconfigured molded components that include at least one electronic component; the reconfigured components are assembled on the printed circuit, the metallized external outputs of the reconfigured components being placed opposite the metallized contact pads of the printed circuit; and these external outputs are connected solderlessly to the metallized contact pads of the printed circuit by means of a material based on an electrically conductive adhesive or ink.
Abstract:
The invention relates to a 3D electronic module comprising a stack (100) of at least a first slice (10) and a second slice (30), the first slice (10) having on a face (101) at least one set (4) of electrically conductive protrusions (41), and the second slice (30) comprising at least one zone (61) of electrically insulating material, traversing the thickness of the slice. The second slice (30) comprises at least one electrically conductive element (3) traversing said slice in a zone (61) of electrically insulating material, able to receive a set (4) of protrusions (41) of the first slice (10).
Abstract:
The invention relates to a method of interconnecting electronic components of a first wafer (T1) with electronic components of a second wafer (T2), each wafer having metallized vias (1) which pass through the wafer in the thickness direction. The method includes deposition of a drop (3) of conductive ink containing solvents on each via (1) of the first wafer (T1); stacking of the second wafer (T2) on the first so that the vias (1) of the second wafer (T2) are substantially superposed on the vias (1) of the first wafer (T1); removal of 50 to 90% of the solvents contained in the drops (3) by heating or applying a vacuum, so as to obtain a pasty ink; and laser sintering of the pasty ink drops (3) so as to produce electrical connections (31) between the superposed metallized vias (1).
Abstract:
A process for fabricating a reconstituted wafer that includes chips having connection pads on a front side side of the chip, this process including positioning of the chips on an adhesive support, front side down on the support; deposition of a resin on the support in order to encapsulate the chips; and curing of the resin. Before deposition of the resin, the process includes bonding, onto the chips, a support wafer for positioning the chips, this support wafer having parts placed on one side of the chips.