摘要:
A structure and a method for forming the same. The structure includes a first dielectric layer, an electrically conductive bond pad on the first dielectric layer, and a second dielectric layer on top of the first dielectric layer and the electrically conductive bond pad. The electrically conductive bond pad is sandwiched between the first and second dielectric layers. The second dielectric layer includes N separate final via openings such that a top surface of the electrically conductive bond pad is exposed to a surrounding ambient through each final via opening of the N separate final via openings. N is a positive integer greater than 1.
摘要:
A semiconductor structure and method for forming the same. The semiconductor structure includes (a) a substrate and (b) a chip which includes N chip solder balls, N is a positive integer, and the N chip solder balls are in electrical contact with the substrate. The semiconductor structure further includes (c) first, second, third, and fourth corner underfill regions which are respectively at first, second, third, and fourth corners of the chip, and sandwiched between the chip and the substrate. The semiconductor structure further includes (d) a main underfill region sandwiched between the chip and the substrate. The first, second, third, and fourth corner underfill regions, and the main underfill region occupy essentially an entire space between the chip and the substrate. A corner underfill material of the first, second, third, and fourth corner underfill regions is different from a main underfill material of the main underfill region.
摘要:
A structure and a method for forming the same. The structure includes a first dielectric layer, an electrically conductive bond pad on the first dielectric layer, and a second dielectric layer on top of the first dielectric layer and the electrically conductive bond pad. The electrically conductive bond pad is sandwiched between the first and second dielectric layers. The second dielectric layer includes N separate final via openings such that a top surface of the electrically conductive bond pad is exposed to a surrounding ambient through each final via opening of the N separate final via openings. N is a positive integer greater than 1.
摘要:
A design structure to provide a package for a semiconductor chip that minimizes the stresses and strains that arise from differential thermal expansion in chip to substrate or chip to card interconnections. An improved set of design structure vias above the final copper metallization level that mitigate shocks during semiconductor assembly and testing. Other embodiments include design structures having varying micro-mechanical support structures that further minimize stress and strain in the semiconductor package.
摘要:
A design structure to provide a package for a semiconductor chip that minimizes the stresses and strains that arise from differential thermal expansion in chip to substrate or chip to card interconnections. An improved set of design structure vias above the final copper metallization level that mitigate shocks during semiconductor assembly and testing. Other embodiments include design structures having varying micro-mechanical support structures that further minimize stress and strain in the semiconductor package.
摘要:
A method for reducing stress on under ball metallurgy (UBM) is disclosed. A collar is disposed around the ball to provide support, and prevent solder interaction in the undercut areas of the UBM. In one embodiment, the collar is comprised of photosensitive polyimide.
摘要:
A method for reducing stress on under ball metallurgy (UBM) is disclosed. A collar is disposed around the ball to provide support, and prevent solder interaction in the undercut areas of the UBM. In one embodiment, the collar is comprised of photosensitive polyimide.
摘要:
A solder interconnect structure is provided with non-wettable sidewalls and methods of manufacturing the same. The method includes forming a nickel or nickel alloy pillar on an underlying surface. The method further includes modifying the sidewall of the nickel or nickel alloy pillar to prevent solder wetting on the sidewall.
摘要:
A semiconductor chip for forming the same. The semiconductor chip includes M regular solder bump structures and N monitor solder bump structures, M and N being positive integers. If a flip chip process is performed for the semiconductor chip, then the N monitor solder bump structures are more sensitive to a cool-down stress than the M regular solder bump structures. The cool-down stress results from a cool-down step of the flip chip process. Each of the M regular solder bump structures is electrically connected to either a power supply or a device of the semiconductor chip. Each of the N monitor solder bump structures is not electrically connected to a power supply or a device of the semiconductor chip.
摘要:
Structures and a method for forming the same. The structure includes a semiconductor substrate, a transistor on the semiconductor substrate, and N interconnect layers on top of the semiconductor substrate, N being a positive integer. The transistor is electrically coupled to the N interconnect layers. The structure further includes a first dielectric layer on top of the N interconnect layers and P crack stop regions on top of the first dielectric layer, P being a positive integer. The structure further includes a second dielectric layer on top of the first dielectric layer. Each crack stop region of the P crack stop regions is completely surrounded by the first dielectric layer and the second dielectric layer. The structure further includes an underfill layer on top of the second dielectric layer. The second dielectric layer is sandwiched between the first dielectric layer and the underfill layer.