摘要:
An electronic semiconductor package is described. The package has a wide band gap electronic semiconductor device requiring heat removal. On one side of the electronic semiconductor device is a first, thermally-conductive, electrically- insulative substrate having a predetermined electrically-conductive wire pattern affixed thereto. On the other side of the electronic semiconductor device is a second, thermally- conductive, electrically-insulative substrate. A heat removal device is mechanically-coupled to the second substrate. The heat removal device is made of a graphite-metal or metal-matrix composite material and a fin array structure of the same material. The coefficients of thermal expansion of the heat removal device and the first and second substrates are matched to minimize internal and external stresses.
摘要:
According to an exemplary embodiment, a wafer level package includes a device wafer including at least one device wafer contact pad and a device, and where the at least one device wafer contact pad is electrically connected to the device. The wafer level package includes a first polymer layer situated over the device wafer. The wafer level package includes at least one passive component situated over the first polymer layer and having a first terminal and a second terminal. The first terminal of the at least one passive component is electrically connected to the at least one device wafer contact pad. The wafer level package includes a second polymer layer situated over the at least one passive component. The wafer level package includes at least one polymer layer contact pad situated over the second polymer layer and electrically connected to the second terminal of the at least one passive component.
摘要:
A semiconductor system (200) of one or more semiconductor interposers (201 ) with a certain dimension (210), conductive vias (212) extending from the first to the second surface, with terminals and attached non-reflow metal studs (215) at the ends of the vias. A semiconducting interposer surface may include discrete electronic components or an integrated circuit. One or more semiconductor chips (202,203) have a dimension (220,230) narrower than the interposer dimension, and an active surface with terminals and non- reflow metal studs (224,234). One chip is flip-attached to the first interposer surface, and another chip to the second interposer surface, so that the interposer dimension projects over the chip dimension. An insulating substrate (204) has terminals and reflow bodies (242) to connect to the studs of the projecting interposer.
摘要:
There is provided a bump structure for a semiconductor device, comprising a first metal layer, and a second metal layer electrically connected to the first metal layer so as to be integrally formed with the first metal layer, and electrically connected to electrode pads of the semi¬ conductor device, in which the second metal layer is composed of one or more metals or alloys having the melting point higher than the melting point of the first metal layer or the eutectic temperature of the first metal layer and another substance when the first metal layer makes a fusion reaction to the surface of the another substance. Preferably, the second metal layer may have a thickness greater than that of the first metal layer. The bump structure may further comprise a diffusion prevention layer between the first metal layer and the second metal layer.
摘要:
Es wird ein Verfahren und eine nach dem Verfahren hergestellten Leiterplatte vorgeschlagen. In der Leiterplatte wird von einer ihrer Flachseiten ausgehend eine Kavität gebildet, beispielsweise dadurch, dass mit einem CO2 Laser eine Vertiefung frei gefräst wird. Der Boden der Kavität enthält eine Strukturierung, also Anschlusspads, die zur elektrischen Verbindung dienen. In die Kavität wird ein Chip eingesetzt, der auf seiner dem Boden der Kavität zugewandten Unterseite mit den Anschlusspads der Leiterplatte in Übereinstimmung bringbare Anschlusspads aufweist. Zur Befestigung des Chips in der Kavität wird ein Kleber in die Kavität eingebracht, in den der Chip eingedrückt wird. Beim Aushärten schrumpft der Kleber und presst dadurch die Anschlüsse des Chips gegen die Anschlüsse auf dem Boden der Kavität. Dadurch bildet sich eine feste elektrische und auch mechanische Verbindung zwischen den miteinander in Berührung stehenden Anschlusspads. Zusätzlich wird der Chip durch den Kleber gehalten. Es entsteht eine Leiterplatte mit einem in der Kavität enthaltenen Chip, der nach außen hin vollständig abgedeckt sein kann. Die elektrischen Verbindungen sind in dem Raum zwischen dem Boden der Kavität und dem elektronischen Chip sicher untergebracht.
摘要:
The objective of the invention is to offer a method for forming a conductive pattern on a substrate (100) and solder protrusions (144) on the conductive pattern. The pitch of the conductive pattern corresponds to the pitch of electrodes on a semiconductor chip.
摘要:
The package of a semiconductor chip (101) has a surface of optical reflection and color, and is substantially free of indentations; the material (105) of the package may be selected from a group consisting of polymers, molding compound, ceramics, metals, and semiconductors. The surface (105a) includes symbols, which contrast optically with the surface. The symbols include lines of approximately circular vapor-deposited spots (110) of ink particles. The spots have a diameter and a thickness (107) of substantially bell-shaped distribution across the diameter; the spots may also overlap.