摘要:
A method for creating an extremely thin semiconductor-on-insulator (ETSOI) layer having a uniform thickness includes: measuring a thickness of a semiconductor-on-insulator (SOI) layer at a plurality of locations; determining a removal thickness at each of the plurality of locations; and implanting ions at the plurality of locations. The implanting is dynamically based on the removal thickness at each of the plurality of locations. The method further includes oxidizing the SOI layer to form an oxide layer, and removing the oxide layer.
摘要:
Disclosed is a method for depositing a metal layer on an interconnect structure for a semiconductor wafer. In the method, a metal conductor is covered by a capping layer and a dielectric layer. The dielectric layer is patterned so as to expose the capping layer. The capping layer is then sputter etched to remove the capping layer and expose the metal conductor. In the process of sputter etching, the capping layer is redeposited onto the sidewall of the pattern. Lastly, at least one layer is deposited into the pattern and covers the redeposited capping layer.
摘要:
A metal hardmask for use with a Dual Damascene process used in the manufacturing of semiconductor devices. The metal hardmask has advantageous translucent characteristics to facilitate alignment between levels while fabricating a semiconductor device and avoids the formation of metal oxide residue deposits. The metal hardmask comprises a first or primary layer of TiN (titanium nitride) and a second or capping layer of TaN (tantalum nitride).
摘要:
A hardmask layer in the back end of an integrated circuit is formed from TaN having a composition of less than 50% Ta and a resistivity greater than 400 μOhm-cm, so that it is substantially transparent in the visible and permits visual alignment of upper and lower alignment marks through the hardmask and intervening layer(s) of ILD. A preferred method of formation of the hardmask is by sputter deposition of Ta in an ambient containing N2 and a flow rate such that (N2 flow)/(N2+carrier flow)>0.5.
摘要翻译:集成电路后端的硬掩模层由具有小于50%Ta且电阻率大于400μΩ-cm的组成的TaN形成,使得其在可见光中基本上是透明的并且允许上和 通过硬掩模和ILD的中间层降低对准标记。 形成硬掩模的优选方法是通过在含有N 2 O 2的环境中溅射沉积Ta并使流速使得(N 2 N 2 O 2)/(N 2 +载体流)> 0.5。
摘要:
A method of forming a high aspect ratio via opening through multiple dielectric layers, a high aspect ratio electrically conductive via, methods of forming three-dimension integrated circuits, and three-dimensional integrated circuits. The methods include forming a stack of at least four dielectric layers and etching the first and third dielectric layers with processes selective to the second and fourth dielectric layers, etching the second and third dielectric layers with processes selective to the first and second dielectric layers. Advantageously the process used to etch the third dielectric layer is not substantially selective to the first dielectric layer.
摘要:
A method of edge protecting bonded semiconductor wafers. A second semiconductor wafer and a first semiconductor wafer are attached by a bonding layer/interface and the second semiconductor wafer undergoes a thinning process. As a part of the thinning process, a first protective layer is applied to the edges of the second and first semiconductor wafers. A third semiconductor wafer is attached to the second semiconductor wafer by a bonding layer/interface and the third semiconductor wafer undergoes a thinning process. As a part of the thinning process, a second protective layer is applied to the edges of the third semiconductor wafer and over the first protective layer. The first, second and third semiconductor wafers form a wafer stack. The wafer stack is diced into a plurality of 3D chips while maintaining the first and second protective layers.
摘要:
Disclosed are embodiments of a semiconductor structure having a contact-level air gap within the interlayer dielectrics above a semiconductor device in order to minimize parasitic capacitances (e.g., contact-to-contact capacitance, contact-to-diffusion region capacitance, gate-to-contact capacitance, gate-to-diffusion region capacitance, etc.). Specifically, the structure can comprise a semiconductor device on a substrate and at least three dielectric layers stacked above the semiconductor device. An air gap is positioned with the second dielectric layer aligned above the semiconductor device and extending vertically from the first dielectric layer to the third dielectric layer. Also disclosed are embodiments of a method of forming such a semiconductor structure using a self-assembly approach.
摘要:
A method, system and program product for bonding two circuitry-including semiconductor substrates, and a related stage, are disclosed. In one embodiment, a method of bonding two circuitry-including substrates includes: providing a first stage for holding a first circuitry-including substrate and a second stage for holding a second circuitry-including substrate; identifying an alignment mark on each substrate; determining a location and a topography of each alignment mark using laser diffraction; creating an alignment model for each substrate based on the location and topography the alignment mark thereon; and bonding the first and second circuitry-including substrates together while aligning the first and second substrate based on the alignment model.
摘要:
A semiconductor structure including expanded source/drain regions that extend in an opposite direction of a gate electrode is provided. The semiconductor structure includes a stack of a body-containing region and a buried insulator portion, a gate dielectric in contact with a surface of the body-containing region, a gate electrode in contact with the gate dielectric, and a source region and a drain region laterally spaced by, and in contact with, the stack. The semiconductor structure further includes a contact level dielectric layer deposited on surfaces of the source region, the drain region and the buried insulator portion.
摘要:
Disclosed are embodiments of a semiconductor structure having a contact-level air gap within the interlayer dielectrics above a semiconductor device in order to minimize parasitic capacitances (e.g., contact-to-contact capacitance, contact-to-diffusion region capacitance, gate-to-contact capacitance, gate-to-diffusion region capacitance, etc.). Specifically, the structure can comprise a semiconductor device on a substrate and at least three dielectric layers stacked above the semiconductor device. An air gap is positioned with the second dielectric layer aligned above the semiconductor device and extending vertically from the first dielectric layer to the third dielectric layer. Also disclosed are embodiments of a method of forming such a semiconductor structure using a self-assembly approach.