摘要:
A device includes a substrate, a metal pad over the substrate, and a passivation layer having a portion over the metal pad. A Post-Passivation Interconnect (PPI) line is disposed over the passivation layer and electrically coupled to the metal pad. An Under-Bump Metallurgy (UBM) is disposed over and electrically coupled to the PPI line. A passive device includes a portion at a same level as the UBM. The portion of the passive device is formed of a same material as the UBM.
摘要:
A device includes a top dielectric layer having a top surface. A metal pillar has a portion over the top surface of the top dielectric layer. A non-wetting layer is formed on a sidewall of the metal pillar, wherein the non-wetting layer is not wettable to the molten solder. A solder region is disposed over and electrically coupled to the metal pillar.
摘要:
A method and device for preventing the bridging of adjacent metal traces in a bump-on-trace structure. An embodiment comprises determining the coefficient of thermal expansion (CTE) and process parameters of the package components. The design parameters are then analyzed and the design parameters may be modified based on the CTE and process parameters of the package components.
摘要:
A system and method for forming photoresists over semiconductor substrates is provided. An embodiment comprises a photoresist with a concentration gradient. The concentration gradient may be formed by using a series of dry film photoresists, wherein each separate dry film photoresist has a different concentration. The separate dry film photoresists may be formed separately and then placed onto the semiconductor substrate before being patterned. Once patterned, openings through the photoresist may have a tapered sidewall, allowing for a better coverage of the seed layer and a more uniform process to form conductive materials through the photoresist.
摘要:
A device includes a semiconductor substrate, an image sensor at a front surface of the semiconductor substrate, and a plurality of dielectric layers over the image sensor. A color filter and a micro lens are disposed over the plurality of dielectric layers and aligned to the image sensor. A through via penetrates through the semiconductor substrate. A Redistribution Line (RDL) is disposed over the plurality of dielectric layers, wherein the RDL is electrically coupled to the through via. A polymer layer covers the RDL.
摘要:
A device includes a metal pad at a surface of an image sensor chip, wherein the image sensor chip includes an image sensor. A stud bump is disposed over, and electrically connected to, the metal pad. The stud bump includes a bump region, and a tail region connected to the bump region. The tail region includes a metal wire portion substantially perpendicular to a top surface of the metal pad. The tail region is short enough to support itself against gravity.
摘要:
An integrated circuit structure includes a semiconductor substrate; a through-semiconductor via (TSV) opening extending into the semiconductor substrate; and a TSV liner in the TSV opening. The TSV liner includes a sidewall portion on a sidewall of the TSV opening and a bottom portion at a bottom of the TSV opening. The bottom portion of the TSV liner has a bottom height greater than a middle thickness of the sidewall portion of the TSV liner.
摘要:
A system and method for stacking semiconductor devices in three dimensions is provided. In an embodiment two or more semiconductor dies are attached to a carrier and encapsulated. Connections of the two or more semiconductor dies are exposed, and the two or more semiconductor dies may be thinned to form connections on an opposite side. Additional semiconductor dies may then be placed in either an offset or overhanging position.
摘要:
A package component is free from active devices therein. The package component includes a substrate, a through-via in the substrate, a top dielectric layer over the substrate, and a metal pillar having a top surface over a top surface of the top dielectric layer. The metal pillar is electrically coupled to the through-via. A diffusion barrier is over the top surface of the metal pillar. A solder cap is disposed over the diffusion barrier.
摘要:
A device includes a first die having a first side and a second side opposite to first side, the first side includes a first region and a second region, and a first metal bump of a first horizontal size formed on the first region of the first side of the first die. A second die is bonded to the first side of the first die through the first metal bump. A dielectric layer is formed over the first side of the first die and includes a first portion directly over the second die, a second portion encircling the second die, and an opening exposing the second region of the first side of the first die. A second metal bump of a second horizontal size is formed on the second region of the first side of the first die and extending into the opening of the dielectric layer. The second horizontal size is greater than the first horizontal size. An electrical component is bonded to the first side of the first die through the second metal bump.