摘要:
A stylus, an integrated circuit (IC) and method of forming the IC. The stylus extends upward from its apex and has a substantially circular cross section that decreases in diameter upward from the apex. The stylus is formed in a mold that may be formed in an orifice in a dielectric layer between wiring layers. The mold may include multiple concentric layers. For a more pronounced, non-linear stylus taper, each layer may be thinner than its next adjacent outer concentric layer.
摘要:
Embodiments of the invention provide a method of creating vias and trenches with different length. The method includes depositing a plurality of dielectric layers on top of a semiconductor structure with the plurality of dielectric layers being separated by at least one etch-stop layer; creating multiple openings from a top surface of the plurality of dielectric layers down into the plurality of dielectric layers by a non-selective etching process, wherein at least one of the multiple openings has a depth below the etch-step layer; and continuing etching the multiple openings by a selective etching process until one or more openings of the multiple openings that are above the etch-stop layer reach and expose the etch-stop layer. Semiconductor structures made thereby are also provided.
摘要:
A memory cell in an integrated circuit is fabricated in part by forming a lower electrode feature, an island, a sacrificial feature, a gate feature, and a phase change feature. The island is formed on the lower electrode feature and has one or more sidewalls. It comprises a lower doped feature, a middle doped feature formed above the lower doped feature, and an upper doped feature formed above the middle doped feature. The sacrificial feature is formed above the island, while the gate feature is formed along each sidewall of the island. The gate feature overlies at least a portion of the middle doped feature of the island and is operative to control an electrical resistance therein. Finally, the phase feature is formed above the island at least in part by replacing at least a portion of the sacrificial feature with a phase change material. The phase change material is operative to switch between lower and higher electrical resistance states in response to an application of an electrical signal.
摘要:
Two substrates are brought together and placed in a plating bath. In one embodiment, a conductive material is plated in microscopic cavities present at the interface between a first metal pad and a second metal pad to form at least one interfacial plated metal liner portion that adheres to a surface of the first metal pad and a surface of the second metal pad. In another embodiment, at least one metal pad is recessed relative to a dielectric surface before being brought together. The two substrates are placed in a plating bath and a conductive material is plated in the cavity between the first metal pad and the second metal pad to form a contiguous plated metal liner layer that adheres to a surface of the first metal pad and a surface of the second metal pad.
摘要:
A carbon nanotube filter. The filter including a filter housing; and chemically active carbon nanotubes within the filter housing, the chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising chemically reactive groups on sidewalls of the carbon nanotubes; and media containing the chemically active carbon nanotubes.
摘要:
A method of forming a semiconductor device is provided where in one embodiment an STI fill is recessed below the pad nitride and pad oxide layers, to a level substantially coplanar with the top surface of the substrate. A thin (having a thickness in the range of about 10 Å-100 Å) wet etch resistant layer is formed in contact with and completely covering at least the top surface of the recessed STI fill material. The thin wet etch resistant layer is more resistant to a wet etch process than at least the pad oxide layer. The thin wet etch resistant layer may be a refractory dielectric material, or a dielectric such as HfOx, AlyOx, ZrOx, HfZrOx, and HfSiOx. The inventive wet etch resistant layer improves the wet etch budget of subsequent wet etch processing steps.
摘要翻译:提供一种形成半导体器件的方法,其中在一个实施例中,STI填充物在衬垫氮化物和衬垫氧化物层下方凹入到与衬底的顶表面基本上共面的水平。 至少形成凹入的STI填充材料的上表面,形成薄(具有在约10埃-120埃范围内的厚度)耐湿蚀刻层。 薄的耐湿蚀刻层比至少衬垫氧化物层更耐湿蚀刻工艺。 薄的耐湿蚀刻层可以是耐火电介质材料,或诸如HfO x,Al y O x,ZrO x,HfZrO x和HfSiO x的电介质。 本发明的耐湿蚀刻层提高了后续湿蚀刻处理步骤的湿法蚀刻预算。
摘要:
Methods of making vertical profile FinFET gate electrodes via plating upon a thin gate dielectric are disclosed. In one embodiment, a method for forming a transistor, comprises: providing a semiconductor topography comprising a semiconductor substrate and a semiconductor fin structure extending above the substrate; forming a gate dielectric across exposed surfaces of the semiconductor topography; patterning a mask upon the semiconductor topography such that only a select portion of the gate dielectric is exposed that defines where a gate electrode is to be formed; and plating a metallic material upon the select portion of the gate dielectric to form a gate electrode across a portion of the fin structure.
摘要:
An interconnect structure is provided that includes a dielectric material 52′ having a dielectric constant of 4.0 or less and including a plurality of conductive features 56 embedded therein. The dielectric material 52′ has an upper surface 52r that is located beneath an upper surface of each of the plurality of conductive features 56. A first dielectric cap 58 is located on the upper surface of the dielectric material 52′ and extends onto at least a portion of the upper surface of each of the plurality of conductive features 56. As shown, the first dielectric cap 58 forms an interface 59 with each of the plurality of conductive features 56 that is opposite to an electrical field that is generated by neighboring conductive features. The inventive structure also includes a second dielectric cap 60 located on an exposed portion of the upper surface of each of the plurality of conductive features 56 not covered with the first dielectric cap 58. The second dielectric cap 60 further covers on an exposed surface of the first dielectric cap 58.
摘要:
A semiconductor fabrication method. The method includes providing a semiconductor structure which includes (i) a semiconductor layer, (ii) a gate dielectric layer on the semiconductor layer, and (iii) a gate electrode region on the gate dielectric layer. The gate dielectric layer is sandwiched between and electrically insulates the semiconductor layer and the gate electrode region. The semiconductor layer and the gate dielectric layer share a common interfacing surface which defines a reference direction perpendicular to the common interfacing surface and pointing from the semiconductor layer to the gate dielectric layer. Next, a resist layer is formed on the gate dielectric layer and the gate electrode region. Next, a cap portion of the resist layer directly above the gate electrode region in the reference direction is removed without removing any portion of the resist layer not directly above the gate electrode region in the reference direction.
摘要:
A method and apparatus for reduction and prevention of residue formation and removal of residues formed in an immersion lithography tool. The apparatus including incorporation of a cleaning mechanism within the immersion head of an immersion lithographic system or including a cleaning mechanism in a cleaning station of an immersion lithographic system.