摘要:
A semiconductor device comprising a silicon substrate, a compound semiconductor material, an insulating material between the silicon substrate and the compound semiconductor material, and a top surface comprising means of electrical connection, and passivation material, where the passivation material is silicon nitride, silicon dioxide, or a combination of both. The present invention eliminates the need for a thick electrical insulator between a heat sink and the back surface of a surface mounted device by the inclusion of an A1N seed layer to electrically isolate the silicon substrate of the device. The sidewalls of the device are also electrically isolated from the active area of the device.
摘要:
By dividing a single chip area into individual sub areas (200a, 200b, 200c on the basis of one or more stress relaxation regions 280a, 280b,) a thermally- induced stress in each of the sub areas may be reduced during operation of complex integrated circuits, thereby enhancing the overall reliability of complex metallization systems comprising low-k dielectric materials or ULK material. Consequently, a high number of stacked metallization layers in combination with increased lateral dimensions of the semiconductor chip (200) may be used compared to conventional strategies.
摘要:
The present invention discloses method for manufacturing a wafer stack, in which a wafer back grinding process is performed in a state where wafers are stacked, whereby a wafer stack manufacturing process can be simplified, and manufacturing costs can be reduced. The method for manufacturing a wafer stack, in which a plurality of sub-wafers are stacked on a base wafer, comprises (a) preparing a base wafer having an active layer formed on a front surface thereof and a sub-wafer having an active layer formed on a front surface thereof, and forming a bump on the active layer formed on the base wafer; (b) stacking the sub-wafer on the base wafer such that a front surface of the sub-wafer is directed to the front surface of the base wafer; (c) grinding a rear surface of the sub-wafer to reduce the thickness of the sub-wafer; (d) forming a bump on the rear surface of the sub-wafer; and (e) repeating the steps (b) to (d) at least one time.
摘要:
A method forms a micropad (30, 70, 42) to an external contact (14, 54, 78) of a first semiconductor device (12, 52, 74). A stud (20, 24, 66, 88, 82) of copper is formed over the external contact. The stud extends above a surface of the first semiconductor device. The stud of copper is immersed in a solution of tin. The tin (28) replaces at least 95 percent of the copper of the stud and preferably more than 99 percent. The result is a tin micropad that has less than 5 percent copper by weight. Since the micropad is substantially pure tin, intermetallic bonds will not form during the time while the micropads of the first semiconductor device are not bonded. Smaller micropad dimensions result since intermetallic bonds do not form. When the first semiconductor device is bonded to an overlying second semiconductor device, the bond dimensions do not significantly increase the height of stacked chips.
摘要:
A stacked via structure for reducing vertical stiffness includes: a plurality of stacked vias, each via disposed on a disc-like structure. The disc-like structure includes a plated through hole landing supporting the plurality of stacked vias. The plated through hole landing includes a compliant center zone; and spring-like stiffness-reducing connectors for connecting the compliant center zone of the plated through hole landing.
摘要:
A semiconductor device includes an upper circuit board which has a plurality of upper-layer wirings including a plurality of first upper-layer wirings, and has a plurality of first and second lower-layer wirings. A first semiconductor structure body is provided on an upper side of the upper circuit board and is electrically connected to the first upper-layer wirings. A lower circuit board which is provided on a peripheral part of a lower side of the upper circuit board, the lower circuit board including a plurality of external connection wirings that are electrically connected to the first lower-layer wirings, and an opening portion which exposes the second lower-layer wirings. A second semiconductor structure body which is disposed in the opening portion of the lower circuit board, second semiconductor structure body including a plurality of external connection electrodes that are electrically connected to the second lower-layer wirings of the upper circuit board.
摘要:
Microfeature dies with redistribution structures that reduce or eliminate line interference are disclosed. The microfeature dies can include a substrate (120) having a bond site (124) and integrated circuitry (123) electrically connected to the bond site. The microfeature dies can also include and a redistribution structure (122) coupled to the substrate. The redistribution structure can include an external contact (126) site configured to receive an electric coupler, a conductive line (128) that is electrically connected to the external contact site and the bond site, and a conductive shield (136,142) that at least partially surrounds the conductive line.