摘要:
Two problems seen in CMP as currently executed are a tendency for slurry particles to remain on the surface and the formation of a final layer of oxide. These problems have been solved by adding to the slurry a quantity of TMAH or TBAH. This has the effect of rendering the surface being polished hydrophobic. In that state a residual layer of oxide will not be left on the surface at the conclusion of CMP. Nor will many slurry abrasive particles remain cling to the freshly polished surface. Those that do are readily removed by a simple rinse or buffing. As an alternative, the CMP process may be performed in three stages—first convention CMP, then polishing in a solution of TMAH or TBAH, and finally a gentle rinse or buffing.
摘要:
A 3D capacitor and method for fabricating a 3D capacitor is disclosed. An exemplary 3D capacitor includes a substrate including a fin structure, the fin structure including a plurality of fins. The 3D capacitor further includes an insulation material disposed on the substrate and between each of the plurality of fins. The 3D capacitor further includes a dielectric layer disposed on each of the plurality of fins. The 3D capacitor further includes a first electrode disposed on a first portion of the fin structure. The first electrode being in direct contact with a surface of the fin structure. The 3D capacitor further includes a second electrode disposed on a second portion of the fin structure. The second electrode being disposed directly on the dielectric layer and the first and second portions of the fin structure being different.
摘要:
A semiconductor apparatus includes fin field-effect transistor (FinFETs) having shaped fins and regular fins. Shaped fins have top portions that may be smaller, larger, thinner, or shorter than top portions of regular fins. The bottom portions of shaped fins and regular fins are the same. FinFETs may have only one or more shaped fins, one or more regular fins, or a mixture of shaped fins and regular fins. A semiconductor manufacturing process to shape one fin includes forming a photolithographic opening of one fin, optionally doping a portion of the fin, and etching a portion of the fin.
摘要:
A 3D capacitor and method for fabricating a 3D capacitor is disclosed. An exemplary 3D capacitor includes a substrate including a fin structure, the fin structure including a plurality of fins. The 3D capacitor further includes an insulation material disposed on the substrate and between each of the plurality of fins. The 3D capacitor further includes a dielectric layer disposed on each of the plurality of fins. The 3D capacitor further includes a first electrode disposed on a first portion of the fin structure. The first electrode being in direct contact with a surface of the fin structure. The 3D capacitor further includes a second electrode disposed on a second portion of the fin structure. The second electrode being disposed directly on the dielectric layer and the first and second portions of the fin structure being different.
摘要:
A semiconductor device and method for fabricating a semiconductor device is disclosed. An exemplary semiconductor device includes a substrate including a fin structure disposed over the substrate. The fin structure includes one or more fins. The semiconductor device further includes an insulation material disposed on the substrate. The semiconductor device further includes a gate structure disposed on a portion of the fin structure and on a portion of the insulation material. The gate structure traverses each fin of the fin structure. The semiconductor device further includes a source and drain feature formed from a material having a continuous and uninterrupted surface area. The source and drain feature includes a surface in a plane that is in direct contact with a surface in a parallel plane of the insulation material, each of the one or more fins of the fin structure, and the gate structure.
摘要:
A sliding cover faceplate and an electronic device using the same are provided. The sliding cover faceplate includes a sliding cover, a cover plate, and a sliding structure. The cover plate is provided on the electronic device, and the sliding cover is disposed on one side of the cover plate. The sliding structure includes a guiding portion and an elastic positioning portion. The guiding portion is disposed on the cover plate and is connected to the sliding cover to guide the sliding cover to slide between a first location and a second location on the cover plate. The elastic positioning portion connects the cover plate with the sliding cover to provide an elastic force to the sliding cover, such that when the sliding cover slides close to the first location or the second location, the sliding cover is automatically positioned on the first location or the second location.
摘要:
A method of forming a copper interconnect in a dual damascene scheme is described. After a diffusion barrier layer and seed layer are sequentially formed on the sidewalls and bottoms of a trench and via in a dielectric layer, a first copper layer is deposited by a first ECP process at a 10 mA/cm2 current density to fill the via and part of the trench. A first anneal step is performed to remove carbon impurities and optionally includes a H2 plasma treatment. A second ECP process with a first deposition step at a 40 mA/cm2 current density and second deposition step at a 60 mA/cm2 current density is used to deposit a second copper layer that overfills the trench. After a second anneal step, a CMP process planarizes the copper layers. Fewer copper defects, reduced S, Cl, and C impurities, and improved Rc performance are achieved by this method.
摘要翻译:描述了在双镶嵌方案中形成铜互连的方法。 在扩散阻挡层和种子层依次形成在电介质层中的沟槽和通孔的侧壁和底部上之后,通过第一ECP工艺以10mA / cm 2 / >电流密度以填充通孔和部分沟槽。 进行第一退火步骤以除去碳杂质,并且任选地包括H 2 O 3等离子体处理。 使用在40mA / cm 2电流密度下的第一沉积步骤和以60mA / cm 2电流密度进行第二沉积步骤的第二个ECP工艺来沉积 第二铜层超过沟槽。 在第二退火步骤之后,CMP工艺使铜层平坦化。 通过该方法可以实现更少的铜缺陷,降低的S,Cl和C杂质,以及Rc性能的提高。
摘要:
A method of forming a metal layer with reduced defects comprising providing a structure having a dielectric layer formed over it, forming a dielectric layer having an opening, lining the opening with a metal seed layer, treating the metal seed layer with a cleaning process to remove contaminates from it, and forming a metal layer upon the metal seed layer.
摘要:
A dual contact ring for contacting a patterned surface of a wafer and electrochemical plating of a metal on the patterned central region of the wafer and removing the metal from the outer, edge region of the wafer. The dual contact ring has an outer voltage ring in contact with the outer, edge region of the wafer and an inner voltage ring in contact with the inner, central region of the wafer. The outer voltage ring is connected to a positive voltage source and the inner voltage ring is connected to a negative voltage source. The inner voltage ring applies a negative voltage to the wafer to facilitate the plating of metal onto the patterned region of the wafer. A positive voltage is applied to the wafer through the outer voltage ring to remove the plated metal from the outer, edge region of the substrate.