摘要:
The present invention provides a method and apparatus for limiting residue build-up by lining with a ceramic material the exhaust plenun and exhaust manifold of a processing chamber. In another aspect of the invention, the inventors have used an air gap between the ceramic liner and the processing chamber walls to increase the dielectric value of the ceramic liner, and further inhibit the build-up of residues. In another aspect, the ceramic liner has been found to retain sufficient heat to allow the elimination of heaters typically used to heat the aluminum walls during a clean operation, if the clean operation is commenced immediately after a process step so that the ceramic retains the necessary heat from the previous processing step. The provision of an air gap aids in this heating, preventing the ceramic heat from being drawn off by direct contact with the aluminum walls. In a preferred embodiment, the ceramic liners are attached to the chamber walls with TEFLON.RTM. (polytetrafluoroethylene) screws.
摘要:
The invention concerns a method for forming metallization and contact structures in an integrated circuit. The method involoves the steps of etching a trench in the trench dielectric layer a trench dielectric layer of a composite structure containing a semiconductor substrate comprising an active region, a gate structure thereover, and dielectric spacers adjacent to the gate structure, a contact dielectric layer; and the trench dielectric layer; etching the contact dielectric layer under conditions which do not damage the gate structure to form a first contact opening that exposes a region of the semiconductor substrate; and depositing a conductive material into the contact opening and the trench.
摘要:
A thin film deposition apparatus and method are disclosed in this invention. The apparatus includes a depositing thin-film particle source, a beam-defining aperture between the particle source and the deposited substrate(s), and a substrate holder to rotate the substrate(s) around its center and move the center along a lateral path so that the substrate(s) can scan across the particle beam from one substrate edge to the other edge. The method includes a step of providing a vacuum chamber for containing a thin-film particle source for generating thin-film particles to deposit a thin-film on the substrates. The method further includes a step of containing a substrate holder in the vacuum chamber for holding a plurality of substrates having a thin-film deposition surface of each substrate facing the beam of thin-film particles. The method further includes a step of providing a rotational means for rotating the substrate holder to rotate each of the substrates exposed to the thin-film particles for depositing a thin film thereon. And, the method further includes a step of providing a laterally reciprocal moving means for reciprocally moving said substrate holder for said beam traversing on said substrate holder from one side of the edge to the other side of the edge or at least passing through the central area of said substrate holder.
摘要:
An electrostatic or mechanical chuck assembly includes gas inlets only in an annulus-shaped peripheral portion and not in the central region of the chuck. The gas inlets are in fluid communication with one or more gas conduits and supply of the backside of a workpiece, such as a semiconductor wafer, with inert coolant gas or gases. The gas or gases supplied only to the peripheral region of the chuck effectively cool the central region of the chuck by at least two physical mechanisms, including the thermal conduction through the workpiece and diffusion of the gas or gases in the interstitial space(s) between the somewhat irregular facing surfaces of the chuck and of the backside of the workpiece.
摘要:
A plasma etch chemistry and etch methodology is provided to improve critical dimension control for openings formed into and/or through a semiconductor thin film. According to an embodiment, the plasma etch chemistry includes an etchant mixture comprising a first etchant of the formula CxHyFz (where x≧2, y≧1 and z≧2) and a second etchant other than the first etchant to form the openings. The relationship of x, y and z may be such that y+z equals an even number ≦2x+2. According to an alternative embodiment, the plasma etch chemistry further includes strained cyclic (hydro)fluorocarbon. The plasma etch chemistry may be used to form openings in the layer in a single-etch step. In a further embodiment, the plasma etch chemistry described herein may etch less than the entire thickness of the layer, and a second plasma etch chemistry substantially free of the first etchant and strained cyclic (hydro)fluorocarbons etches the remainder of the layer to form the openings. Such an etch methodology advantageously reduces the risk of etching the materials underlying the layer.
摘要翻译:提供等离子体蚀刻化学和蚀刻方法以改进形成于和/或穿过半导体薄膜的开口的临界尺寸控制。 根据实施例,等离子体蚀刻化学品包括蚀刻剂混合物,其包含式C x H y F z(其中x> = 2,y> = 1和z> = 2)的第一蚀刻剂和除第一蚀刻剂之外的第二蚀刻剂, 开口 x,y和z的关系可以使得y + z等于偶数<= 2x + 2。 根据替代实施例,等离子体蚀刻化学品还包括应变的环状(氢)氟碳化合物。 等离子体蚀刻化学可以用于在单蚀刻步骤中在层中形成开口。 在另一个实施方案中,本文所述的等离子体蚀刻化学蚀刻可以蚀刻小于层的整个厚度,并且基本上不含第一蚀刻剂的第二等离子体蚀刻化学品和应变的环状(氢)氟碳化物蚀刻该层的其余部分,形成 开口 这种蚀刻方法有利地降低了蚀刻层之下的材料的风险。
摘要:
A method of reducing impurities in films to be deposited within a chemical vapor deposition (CVD) device includes steps of cleaning the process chamber of the CVD device, and depositing, prior to wafer processing, a gettering layer of, for example, phosphorous containing glass on interior surfaces of the process chamber. The gettering layer getters mobile alkali ions and substantially reduces or prevents outdiffusion of alkali ions and other impurities. The phosphorous containing glass may also be doped with boron. A blocking layer, such as undoped silicate glass, silicon nitride, silicon oxynitride or the like may be deposited on the gettering layer to trap impurities and to prevent phosphorous contamination in a applications sensitive to such contamination. Alternatively, silicon nitride or silicon oxynitride may be deposited on interior surfaces of the process chamber without a gettering layer, to thereby substantially prevent outdiffusion of underlying moisture and impurities during subsequent deposition of films onto the wafers to be processed.
摘要:
According to one embodiment (300), a method of forming a self-aligned contact can include forming adjacent conducting structures with sidewalls (302). A first insulating layer may then be formed without first forming a liner (304), such as a liner that is conventionally formed to protect underlying conducting structures and/or a substrate. A contact hole may then be etched between adjacent conducting structures (306). Contact structures may then be formed (308).
摘要:
The invention concerns a method for simultaneously forming a metallization and contact structure in an integrated circuit. The method involves the steps of etching a trench dielectric layer of a composite structure having a semiconductor substrate with an active region, a gate structure thereon, at least one dielectric spacer adjacent to the gate structure, a contact dielectric layer over the semiconductor substrate, the gate structure and the dielectric spacer, an etch stop layer over the contact dielectric layer, and a trench dielectric layer over the etch stop layer, to form a trench in the trench dielectric under etch conditions which do not substantially etch the etch stop layer; thereafter, forming an opening in the etch stop layer and the contact dielectric layer by etching under conditions which do not damage the gate structure to expose the active region; and depositing a conductive material into the opening and the trench.
摘要:
According to one embodiment (100), a method of manufacturing a semiconductor device may include forming diffusion regions in a substrate with a gate, first spacer, and second spacer as a diffusion mask (102). A second spacer may then be removed (104) prior to the formation of an interlayer dielectric. An interlayer dielectric may then be formed (106) over a gate structure and first spacer. A contact hole may then be etched through the interlayer dielectric that is self-aligned with the gate (108).
摘要:
A method for conditioning a plasma etch chamber is presented. A plasma etch chamber is provided, which preferably includes a chuck for supporting a topography. A conditioning process may be performed in the etch chamber. The conditioning process preferably includes positioning a cover topography on or above the chuck. A conditioning feed gas containing (hydro)halocarbons may be introduced into the chamber. A conditioning plasma may be generated from the conditioning feed gas for a conditioning time. Immediately after generating the conditioning plasma is complete, the overall thickness of the cover topography is preferably at least as great as immediately before generating the conditioning plasma. By performing a conditioning process in such a manner, the total cost and complexity of the conditioning process may be reduced.