Abstract:
A microwave introducing mechanism 43 includes a cylindrical container 50; an inner conductor 52, coaxially provided in the container 50, a microwave transmission path being defined between the container 50 and the inner conductor 52; a tuner 44 for adjusting an impedance of the microwave transmission path 53; and an antenna section 45 including an antenna 51 for radiating to the chamber a microwave transmitted through the microwave transmission path 53. The tuner 44 includes a pair of slugs 58 made of a dielectric material and movable along the inner conductor 52; an actuator 59 for moving the slugs 58; and a controller 60. The controller 60 controls both the slugs 58 to move together in a range of a ½ wavelength of the microwave and one of the slugs 58 to move in a range of a ¼ wavelength of the microwave with regard to the other slug.
Abstract:
PROBLEM TO BE SOLVED: To provide a microwave guiding arrangement with high power-transfer efficiency to an antenna and a load (plasma) and high uniformity in power supply, even when using a large-diameter antenna. SOLUTION: The microwave guiding arrangement 43 includes an antenna unit 45 having a planar antenna 54 to irradiate microwaves into a chamber 1, a coaxial tube 50 connected to the planar antenna 54 to guide the microwaves into the planar antenna 54, and a tuner 44 mounted at the coaxial tube 50 for performing an impedance matching. The planar antenna 54 includes a plurality of arcuate slots 54a uniformly formed with two sets or more each at equal length, on a plurality of virtual circles concentrically drawn at intervals of integral multiple of λg/4+δ. The slots 54a are arranged as overlapped at the same opening angle B. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a plasma treatment apparatus generating a plasma having high homogeneity and stability. SOLUTION: This apparatus generating a plasma uses a μ wave for rotating the μ wave in terms of time, by using a plurality (from 2 to 4) of waveguides and by arranging the waveguides. Two waveguides are declined to give phase difference in an electric field, and a circularly polarized wave is introduced into a treatment chamber. At this time, an arranging method of waveguides and a means thereof, a merging chamber in which μ waves are merged, and a controlling means of a reflected wave using a reflection controlling chamber are provided. Thus, in a method for generating a plasma using a μ wave by providing a means for rotating a μ wave in a wide parameter region, a plasma treatment apparatus can be provided which can obtain a plasma having a high density and a high homogeneity in a wide process parameter region. As a result, a homogeneous processing of a wafer can be obtained having a large aperture with a high processing rate. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus which follows a preamble, wherein load matching is improved while the sensitivity to arcing is not increased.SOLUTION: An apparatus for performing a plasma chemical vapor deposition process includes a mainly cylindrical resonator 2. The resonator includes an outer cylindrical wall 4 enclosing a resonant cavity 5 having a substantially rotation symmetric shape with respect to a cylindrical axis C, and further includes a plurality of sidewall portions bounding the resonant cavity in opposite cylindrical axis directions. The apparatus further includes a microwave guide 3 having an end extending through the outer cylindrical wall into the resonant cavity. The length of the resonant cavity in the cylindrical direction varies as a function of a distance in the radial direction to the cylindrical axis.