Abstract:
Interconnect structures with improved conductive properties are disclosed herein. In one embodiment, an interconnect structure can include a first conductive member coupled to a first semiconductor die and a second conductive member coupled to second semiconductor die. The first conductive member includes a recessed surface defining a depression. The second conductive member extends at least partially into the depression of the first conductive member. A bond material within the depression can at least partially encapsulate the second conductive member and thereby bond the second conductive member to the first conductive member.
Abstract:
Systems and methods for uniform back side exposure of through-silicon vias (TSVs) are disclosed. In one embodiment, a semiconductor device comprises a substrate having a front side with circuit elements formed thereon, and a back side opposite the front side. A TSV extends between the front side and the back side of the substrate, and a dummy feature is disposed over the back side of the substrate, the dummy feature laterally spaced apart from the TSV and substantially coplanar with the TSV. In another embodiment, a semiconductor device comprises a substrate having a TSV formed therethrough, with a control material disposed over the back side of the substrate, the TSV substantially coplanar with the control material.
Abstract:
Various embodiments of microelectronic devices and methods of manufacturing are described herein. In one embodiment, a method for aligning an electronic feature to a through-substrate via includes forming a self-aligned alignment feature having a wall around at least a portion of the TSV and aligning a photolithography tool to the self-aligned alignment feature. In some embodiments, the self-aligned alignment feature is defined by the topography of a seed material at a backside of the device.
Abstract:
A method for selectively removing material from a substrate without damage to copper filling a via and extending at least partially through the substrate. The method comprises oxidizing a semiconductor structure comprising a substrate and at least one copper feature and removing a portion of the substrate using an etchant comprising SF6 without forming copper sulfide on the at least one copper feature. Additional methods are also disclosed, as well as semiconductor structures produced from such methods.
Abstract:
Various embodiments of microelectronic devices and methods of manufacturing are described herein. In one embodiment, a method for aligning an electronic feature to a through-substrate via includes forming a self-aligned alignment feature having a wall around at least a portion of the TSV and aligning a photolithography tool to the self-aligned alignment feature. In some embodiments, the self-aligned alignment feature is defined by the topography of a seed material at a backside of the device.
Abstract:
Semiconductor die assemblies having high efficiency thermal paths. In one embodiment, a semiconductor die assembly comprises a package support substrate, a first semiconductor die electrically mounted to the package support substrate, and a plurality of second semiconductor dies. The first die has a stacking site and a peripheral region extending laterally from the stacking site, and the bottom second semiconductor die is attached to the stacking site of the first die. The assembly further includes (a) a thermal transfer structure attached to the peripheral region of the first die that has a cavity in which the second dies are positioned and an inlet, and (b) an underfill material in the cavity. The underfill material has a fillet between the second semiconductor dies caused by injecting the underfill material into the cavity through the inlet port of the casing.
Abstract:
Interconnect structures with improved conductive properties are disclosed herein. In one embodiment, an interconnect structure can include a first conductive member coupled to a first semiconductor die and a second conductive member coupled to second semiconductor die. The first conductive member includes a recessed surface defining a depression. The second conductive member extends at least partially into the depression of the first conductive member. A bond material within the depression can at least partially encapsulate the second conductive member and thereby bond the second conductive member to the first conductive member.
Abstract:
Various embodiments of microelectronic devices and methods of manufacturing are described herein. In one embodiment, a method for aligning an electronic feature to a through-substrate via includes forming a self-aligned alignment feature having a wall around at least a portion of the TSV and aligning a photolithography tool to the self-aligned alignment feature. In some embodiments, the self-aligned alignment feature is defined by the topography of a seed material at a backside of the device.
Abstract:
Methods of forming a semiconductor structure include exposing a carrier substrate to a silane material to form a coating, removing a portion of the coating at least adjacent a periphery of the carrier substrate, adhesively bonding another substrate to the carrier substrate, and separating the another substrate from the carrier substrate. The silane material includes a compound having a structure of (XO)3Si(CH2)nY, (XO)2Si((CH2)nY)2, or (XO)3Si(CH2)nY(CH2)nSi(XO)3, wherein XO is a hydrolyzable alkoxy group, Y is an organofunctional group, and n is a nonnegative integer. Some methods include forming a polymeric material comprising Si—O—Si over a first substrate, removing a portion of the polymeric material, and adhesively bonding another substrate to the first substrate. Structures include a polymeric material comprising Si—O—Si disposed over a first substrate, an adhesive material disposed over the first substrate and at least a portion of the polymeric material, and a second substrate disposed over the adhesive material.
Abstract:
Semiconductor device assemblies having stacked semiconductor dies and thermal transfer devices that include vapor chambers are disclosed herein. In one embodiment, a semiconductor device assembly includes a first semiconductor die having a base region, at least one second semiconductor die at the base region, and a thermal transfer device attached to the first and second dies. The thermal transfer device includes an encapsulant at least partially surrounding the second die and a via formed in the encapsulant. The encapsulant at least partially defines a cooling channel that is adjacent to a peripheral region of the first die. The via includes a working fluid and/or a solid thermal conductor that at least partially fills the channel.