Abstract:
PROBLEM TO BE SOLVED: To reduce the apparatus cost and improve the productivity in an apparatus for implanting many kinds of ion onto a single wafer. SOLUTION: Multiple ion beam line assemblies are arranged around a common processing chamber. Each of multiple ion beam line assemblies is selectively separated from the common processing chamber, and multiple ion beam lines intersects with each other at a processing region of the common processing chamber. A scanning apparatus arranged within the common processing chamber can be operated so that a workpiece holder gets across each of multiple ion beam lines to selectively move in one or more directions in the processing region. A common dose measuring apparatus arranged within the common processing chamber can be operated to measure one or more characteristics in each of multiple ion beam lines. To exchange a workpiece between the common processing chamber and an external environment, a load lock chamber is linked to the common processing chamber operatively. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wide area radio frequency plasma source suitable for simultaneously ashing or etching multiple semiconductor substrates.SOLUTION: An antenna array 30 for a radio frequency plasma process chamber includes: an electrode array 34; a dielectric tube array 36 made of dielectric tubes concentrically disposed about each electrode tube; and a hermetic seal 40. A chamber at atmospheric pressure is formed between an outer surface of each electrode tube and an inner surface of a dielectric tube corresponding to the electrode tube. The hermetic seal 40 is located between each dielectric tube and the process chamber, so as to allow a vacuum or low pressure in the process chamber.
Abstract:
PROBLEM TO BE SOLVED: To enable an ion beam of a high beam current in low-energy in an ion implantation system by a ribbon form ion beam. SOLUTION: A w 1 width ribbon form ion beam is pulled out from an ion source 102 and put into a mass spectrometry magnet 110, made divergent in a non-dispersive plane (xz plane), and made convergent in a dispersive plane (xy plane). A desired ion species is selected by a mass spectrometry slit 118, put into an angle correction apparatus 120, changed into a w 2 width ribbon form ion beam parallel in a horizontal plane (xz plane), and ion implantation is carried out to a workpiece 124 in an end station 122. Since a portion with a narrow width of the ion beam is made not to appear anywhere, widening by a space charge can be controlled, and transportation loss can be lessened. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To enable an ion source used for an ion implantation system to move from one output mode to the other output mode and from one ion source material to the other ion source material. SOLUTION: An ion source assembly main body 220 includes an ion source chamber 212 where ionization materials 116, 120 are supplied from solid materials 228, 232 in a region between a filament 204 and a reflection board 206 and arms of an RF antenna 128 and an ion plasma 214 is generated. The RF antenna 128 is composed of a ceramic tube 225 and copper surrounded by sapphire or the like and can get a water cooling by using a water jacket 216. The ion source chamber 212 accommodates both of a low output direct current discharging element 126 and the RF antenna 128 of a high output discharging element. The low output discharging element 126 includes with a cathode heater filament 204, a first reflection board 206 and a second reflection board 208. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for implanting ions into a workpiece. SOLUTION: In an ion implantation system, an ion beam is generated for implanting the ions into the workpiece, and the ion beam is subjected to mass analysis and is made to make a vertical sweep action along a sweep axis line, with respect to the workpiece. The workpiece is then tilted along the beam axis line, in synchronization with the sweep action of the ion beam, to keep the ion injection angle substantially constant with respect to the workpiece. In this case, an analysis aperture is moved along with the ion beam, when the ion beam is swept vertically across a wafer, and through this process, desired ions can be made to collide against the wafer and unwanted contaminants are blocked. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a single magnet assembly used for an ion implantation system, with improved mass spectrometry profile characteristics, and a creating wide-ribbon ion beam. SOLUTION: The ion implantation system supplies ribbon beams put under mass spectrometry from a plasma source and an ion beam source containing a drawer element. The drawer element draws out a divergence beam, and makes the ion beam face to a window frame magnet assembly. The window frame magnet assembly contains two pairs of coils arranged perpendicularly with each other inside a window-shape yoke so as to generate an independently controllable and uniform cross-field magnetic field. The first coil pair creates a uniform perpendicular magnetic field 804 so as to make the divergence beam a uniform parallel broad beam. A magnetic field 810 created by the second coil pair, gives mass divergence by the mass of the ion, bends the ion beam in a sheet shape on a perpendicular direction, and forms a ribbon beam 808. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optimum method for effectively utilizing ion beams in an ion implantation system of a single substrate. SOLUTION: In the ion implantation system, a temporary temperature operation parameter is controlled based on mechanical rotation of 180° of a wafer during beam scanning fixed by a two-dimensional mechanical scanning. The rotation of a work piece during the fixed ion beam scanning makes temporary temperature dissipation sufficient for promoting more uniform ion implantation treatment possible. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an ion implantation machine which has a mass spectrometry magnet and/or other magnetic structure to be used for supplying ion beams to implant ions into a silicon wafer, and provide its system and method. SOLUTION: The ion implantation machine 10 is composed of an ion source 12 to generate ion beams 14 which moves alongside a beam line and a ion implantation chamber 22. In order to implant ions on the surface of a workpiece 24 by the ion beams, the workpiece is positioned to cross the ion beams. Magnets 30, 40, 42, 44 made of various superconductive materials positioned alongside the beam line are provided to operate the ion beams and ions. The superconductive materials are made of a T C material of a low critical temperature (e.g. NbTi) or a higher T C material (e.g. MgB 2 , Bi 2 Sr 2 CaCu 2 O 8 ). COPYRIGHT: (C)2007,JPO&INPIT