摘要:
The present invention provides a process chamber and voltage distributive electrode (VDE) which distributes capacitive coupling between an inductive source and a plasma in a process chamber. The VDE is preferably slotted defining energy opaque and energy transparent portions which enable inductive coupling into the chamber while distributing capacitive coupling uniformly over the dielectric window.
摘要:
A tandem processing-zones chamber having plasma isolation and frequency isolation is provided. At least two RF frequencies are fed from the cathode for each processing zones, where one frequency is about ten times higher than the other, so as to provide decoupled reactive ion etch capability. The chamber body is ground all around and in-between the two processing zones. The use of frequency isolation enables feed of multiple RF frequencies from the cathode, without having crosstalk and beat. A plasma confinement ring is also used to prevent plasma crosstalk. A grounded common evacuation path is connected to a single vacuum pump.
摘要:
An RF power supplier is provided, that enables multiple-frequency RF power. The system uses N RF signal generators, combines the RF signals, amplify the combined signals, and then separates the amplified signal. The output of the system is then a multiple-frequency RF power. Optionally, the frequencies are switchable, so that one may select which frequencies the system outputs.
摘要:
The invention is embodied in an inductively coupled plasma reactor including a vacuum chamber for holding a wafer in the interior thereof and capable of containing a plasma gas, and having an RF antenna and an RF power source for supplying RF power to the RF antenna and apparatus for electrically isolating the RF antenna from the RF power source so as to reduce capacitive coupling therebetween. Preferably, the apparatus for isolating the antenna is a transformer having a primary winding connected across the RF power source and a secondary winding connected across the RF antenna. Preferably, the reactor further includes a conductive Faraday shield having plural layers, the Faraday shield being disposed between the RF antenna and the ceiling of the vacuum chamber, the Faraday shield having eddy current-suppressing apertures in each layer thereof facing conductive portions of the shield in an adjacent layer thereof. The ceiling of the vacuum chamber acts as a gas distribution manifold. The inner layer of the ceiling is the shower head of the manifold.
摘要:
A tandem processing-zones chamber having plasma isolation and frequency isolation is provided. At least two RF frequencies are fed from the cathode for each processing zones, where one frequency is about ten times higher than the other, so as to provide decoupled reactive ion etch capability. The chamber body is ground all around and in-between the two processing zones. The use of frequency isolation enables feed of multiple RF frequencies from the cathode, without having crosstalk and beat. A plasma confinement ring is also used to prevent plasma crosstalk. A grounded common evacuation path is connected to a single vacuum pump.
摘要:
An electrostatic chuck device in which the electrostatic chuck and support are made from high resistivity, high thermal conductivity and low RF energy loss dielectric materials is described. An advantage of this electrostatic chuck device is that the wafer surface electromagnetic field distribution is more uniform than conventional electrostatic chuck devices. As a result, the wafer etch rate, especially the wafer edge etch rate non-uniformity, is significantly improved compared with conventional electrostatic chuck devices.
摘要:
A tandem processing-zones chamber having plasma isolation and frequency isolation is provided. At least two RF frequencies are fed from the cathode for each processing zones, where one frequency is about ten times higher than the other, so as to provide decoupled reactive ion etch capability. The chamber body is ground all around and in-between the two processing zones. The use of frequency isolation enables feed of multiple RF frequencies from the cathode, without having crosstalk and beat. A plasma confinement ring is also used to prevent plasma crosstalk. A grounded common evacuation path is connected to a single vacuum pump.
摘要:
A bonded multi-layer RF window may include an external layer of dielectric material having desired thermal properties, an internal layer of dielectric material exposed to plasma inside a reaction chamber, and an intermediate layer of bonding material between the external layer and the internal layer. Heat produced by the chemical reaction inside the chamber and by the transmission of RF energy through the window may be conducted from the internal layer to the external layer, which may be cooled during a semiconductor wafer manufacturing process. A bonded multi-layer RF window may include cooling conduits for circulating coolant to facilitate cooling of the internal layer; additionally or alternatively, gas distribution conduits and gas injection apertures may be included for delivering one or more process gases into a reaction chamber. A system including a plasma reaction chamber may employ the inventive bonded multi-layer RF window.
摘要:
Conventional methods of etching TiSix use Cl2 or HBr as the plasma etchant. However, these methods can lead to undesirable residues, due to the presence of silicon nodules in the TiSix The present invention overcomes the residue problem by adding a fluorine containing gas to the plasma etchant, which is then able to effectively etch the Si nodules at an etch rate which is approximately the same as the etch rate of the TiSix, so that the undesirable residue is not formed. A method of etching TiSix is provided, wherein the surface of the TiSix is exposed, typically through a patterned mask, to a plasma etchant. The plasma etchant comprises (i) at least one fluorine containing gas, such as SF6, NF3, CxFy, and compatible mixtures of such gases; and (ii) a gas selected from the group consisting of HBr, Cl2, and combinations thereof.
摘要翻译:TiSix的常规蚀刻方法使用Cl2或HBr作为等离子体蚀刻剂。 然而,由于在TiSix中存在硅结节,这些方法可能导致不期望的残留物本发明通过向等离子体蚀刻剂中加入含氟气体来克服残留问题,其然后能够有效地将Si结节蚀刻在 蚀刻速率与TiSix的蚀刻速率大致相同,从而不形成不希望的残留物。 提供了蚀刻TiSix的方法,其中TiSix的表面通常通过图案化掩模暴露于等离子体蚀刻剂。 等离子体蚀刻剂包括(i)至少一种含氟气体,例如SF 6,NF 3,C x F y以及这些气体的相容混合物; 和(ii)选自HBr,Cl 2及其组合的气体。
摘要:
A closed-loop, dome thermal control apparatus containing a high-volume fan, a heat exchange chamber, and an enclosure that encloses the fan and the heat exchange chamber. The fan blows air over a dome of a semiconductor wafer processing system and through the heat exchange chamber to uniformly control the temperature of a dome of a plasma chamber to prevent particle contamination of the wafer. The enclosure recirculates the temperature controlled air to the fan to form a closed-loop apparatus.