Abstract:
The present invention relates to an inductively coupled high density plasma generating apparatus which stably etches surfaces of sapphire wafers used for producing high luminance LED chips. The apparatus comprises a reaction chamber which provides a space for generating plasma; an antenna system arranged above the reaction chamber to induce electric fields for generating plasma; a dielectric insulation plate interposed between the reaction chamber and the antenna system; and a plurality of permanent magnets arranged along the circumference of the dielectric insulating plate. The plurality of permanent magnets are sequentially arranged in such a manner that one of the magnetic poles of each permanent magnet is the same as one of the magnetic poles of the adjacent permanent magnet and the other of the magnetic poles of each permanent magnet is opposite to the other of the magnetic poles of the adjacent permanent magnet. The antenna system includes a plurality of antenna units arranged in different positions, and each antenna of the antenna units includes a power applying portion to which high frequency power is applied, a ground output portion, and a circular coil. The power applying portion and the ground output portion are arranged to form an opening. The above-described high density plasma generating apparatus can be valuably used in the formation of lens patterns on sapphire wafers, which requires high density plasma etching, as it provides effects of uniform etching using stable plasma.
Abstract:
Apparatus for processing substrates are disclosed herein. In some embodiments, a substrate processing system may include a process chamber having a first volume to receive a plasma and a second volume for processing a substrate; a substrate support disposed in the second volume; and a plasma filter disposed in the process chamber between the first volume and the second volume such that a plasma formed in the first volume can only flow from the first volume to the second volume through the plasma filter. In some embodiments, the substrate processing system includes a process kit coupled to the process chamber, wherein the plasma filter is disposed in the process kit.
Abstract:
NMOS transistors having controlled channel strain and junction resistance and methods for the fabrication of same are provided herein. In some embodiments, a method for forming an NMOS transistor may include (a) providing a substrate having a p-type silicon region; (b) depositing a silicon seed layer atop the p-type silicon region; (c) depositing a silicon-containing bulk layer comprising silicon, silicon and a lattice adjusting element or silicon and an n-type dopant atop the silicon seed layer; (d) implanting at least one of the lattice adjusting element or the n-type dopant which is absent from the silicon-containing bulk layer deposited in (c) into the silicon-containing bulk layer; and (e) annealing the silicon-containing bulk layer with an energy beam after implantation in (d). In some embodiments, the substrate may comprise a partially fabricated NMOS transistor device having a source/drain region defined therein.
Abstract:
Methods and apparatus for controlling microloading, such as within cell microloading between adjacent cells or isolated / dense microloading between areas of isolated or dense features during shallow trench isolation (STI) fabrication processes, or other trench fabrication processes, are provided herein. In some embodiments, a method for fabricating STI structures may include providing a substrate having a patterned mask layer formed thereon corresponding to one or more STI structures to be etched; etching the substrate through the patterned mask layer using a plasma formed from a process gas to form one or more STI structure recesses on the substrate; and pulsing the plasma for at least a portion of etching the substrate to control at least one of a depth or width of the one or more STI structure recesses.
Abstract:
Embodiments of the present invention generally provide plasma etch process chamber improvements. An improved gas injection nozzle is provided for use at a central location of the lid of the chamber. The gas injection nozzle may be used in an existing plasma etch chamber and is configured to provide a series of conic gas flows across the surface of a substrate positioned within the chamber. In one embodiment, an improved exhaust kit for use in the plasma etch chamber is provided. The exhaust kit includes apparatus that may be used in an existing plasma etch chamber and is configured to provide annular flow of exhaust gases from the processing region of the chamber.
Abstract:
A method of processing a substrate (1) that displays out-gassing when placed in a vacuum comprises placing the substrate in a vacuum and performing an out-gassing treatment by heating the substrate (1) to a temperature T1 and removing gaseous contamination emitted from the substrate (1) until the out-gassing rate is determined by the diffusion of the substrate's con¬ tamination and thus essentially a steady state has been established. Afterwards, the temperature is lowered to a temperature T2 at which the diffusion rate of the substrate's contamination is lower than at T1. The substrate (1) is further processed at said temperature T2 until the substrate (1) has been covered with a film (16) comprising a metal.
Abstract:
Embodiments of the present invention relate to method and apparatus for providing processing gases to a process chamber with improved plasma dissociation efficiency. One embodiment of the present invention provides a baffle nozzle assembly comprising an outer body defining an extension volume connected to a processing chamber. A processing gas is flown to the processing chamber through the extension volume which is exposed to power source for plasma generation.
Abstract:
Techniques and systems for maintaining a plasma processing kit consisting of protection and shielding elements without causing damage are introduced. The elements may be made of aluminium, polysilicon and quartz and may be coated with silicon. The surfaces of the elemants show a specified roughness. Precision cleaning and recovery of the contamined kit components of a plasma doping (PLAD) system is used, to extend the life and reusability of the components. The methods described cover the stages of inspection, pre-cleaning, mechanical processing and texturing, post-cleaning, clean-room class cleaning and packaging of the components consisting of quartz, aluminium and/or silicon. Techniques described employ the combination of a variety of means (primarily chemical and mechanical) to achieve the desired levels of cleanliness. The result obtained by methods that include Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Laser Particle Count affirm the efficacy of these techniques.