摘要:
An object of the present invention is to suppress damage of an electrostatic chuck, by controlling stress exerted on each part of a table, which includes an electrically conductive material, i.e., an electrode for generating plasma, a dielectric layer for enhancing the in-plane uniformity of a plasma process, and an electrostatic chuck. The table for a plasma processing apparatus includes an electrically conductive member connected with a high frequency power source and adapted for plasma generation, for drawing ions present in the plasma, or for both thereof; a dielectric layer provided on a top face of the electrically conductive member, having a central portion and a peripheral portion that are different in thickness relative to each other, and adapted for providing uniformity of high frequency electric field intensity in a plane over the substrate to be processed; and an electrode film for an electrostatic chuck, provided in the dielectric layer and adapted for electrostatically chucking the substrate onto a top face of the dielectric layer. With such configuration, the stress exerted on the electrostatic chuck due to temperature change can be controlled.
摘要:
A plasma processing apparatus and a focus ring enables to perform uniform plasma processing over the entire surface of a substrate to be processed to thereby improve in-surface uniformity of plasma processing compared with conventional cases. The focus ring is disposed on a susceptor 2, which serves to mount thereon a semiconductor wafer W and further functions as a lower electrode, to surround a periphery of the semiconductor wafer W. The focus ring 6 includes a ring member of a thin plate shape disposed to surround the periphery of the wafer W while maintaining a gap therebetween and a lower ring body installed below the semiconductor wafer and the ring member of the thin plate shape.
摘要:
A processing apparatus for performing a process on a surface of an object to be processed by applying a high frequency power to an electrode installed in an airtight processing chamber to convert a processing gas introduced therein into a plasma, includes a thermal transfer gas feed pathway for supplying a thermal transfer gas for controlling a temperature of the object to be processed to a minute space between the object to be processed and a holding unit installed on the electrode for attracting and holding the object to be processed through an inner portion of an insulating member disposed under the electrode. A portion of the thermal transfer gas feed pathway, which passes through the inner portion of the insulating member, is formed in a zigzag shape or a spiral shape with respect to a normal direction of a holding surface of the holding unit.
摘要:
A plasma processing apparatus for performing a plasma process on a target substrate includes a process container configured to accommodate the target substrate and to reduce pressure therein. A first electrode is disposed within the process container. A supply system is configured to supply a process gas into the process container. An electric field formation system is configured to form an RF electric field within the process container so as to generate plasma of the process gas. A number of protrusions are discretely disposed on a main surface of the first electrode and protrude toward a space where the plasma is generated.
摘要:
An electrostatic chuck device includes an electrostatic chuck section including a substrate and a power supply terminal for applying a DC voltage to an electrostatic-adsorption inner electrode; and a metal base section fixed to the other main surface of the electrostatic chuck section. Here, a concave portion is formed in the main surface of the metal base section facing the electrostatic chuck section and a dielectric plate is fixed to the concave portion. The dielectric plate and the electrostatic chuck section are adhesively bonded to each other with an insulating adhesive bonding layer interposed therebetween. The dielectric plate and the concave portion are adhesively bonded to each other with an insulating adhesive bonding layer interposed therebetween. The dielectric constant of the insulating adhesive bonding layer is smaller than that of any one of the dielectric plate and the substrate.
摘要:
The present invention provides an upper electrode used in an etching apparatus and the etching apparatus including the upper electrode, both of which can properly reduce intensity of electric field of plasma around a central portion of a substrate to be processed, thus enhancing in-plane uniformity of a plasma process. In this apparatus, a recess, serving as a space for allowing a dielectric to be injected therein, is provided around a central portion of the upper electrode. A dielectric supply passage configured for supplying the dielectric into the space and a dielectric discharge passage configured for discharging the dielectric from the space are connected with the space, respectively. With such configuration, the dielectric can be controllably supplied into the recess, such that in-plane distribution of the intensity of the electric field can be uniformed, corresponding to in-plane distribution of the intensity of the electric field of the plasma generated under various process conditions, such as a kind of each wafer that will be etched, each processing gas that will be used, and the like.
摘要:
[Object]To provide a stage for plasma processing apparatus, the stage being capable of improving uniformity of electric field strength in a plasma so as to enhance an in-plane uniformity of a plasma process to a substrate, and to provide a plasma processing apparatus provided with this stage. [Means for Solving the Problem]A stage 3 for a plasma processing apparatus 2 comprises: a conductive member 31 connected to a radiofrequency power source, the conductive member serving as an electrode for generating a plasma and/or an electrode for drawing ions from a plasma; a dielectric layer 32 covering a central part of an upper surface of the conductive member, for making uniform a radiofrequency electric field applied to a plasma through a substrate to be processed wafer W) placed on the placing surface; and an electrostatic chuck 33 laminated on the dielectric layer 35, the electrostatic chuck having an electrode film embedded therein. The electrode film satisfies δ/z≧1,000 (z; a thickness of the electrode film 35, 6; a skin depth of the electrode film for the electrostatic chuck as to a radiofrequency power supplied from the radiofrequency power source).
摘要:
There are provided a matching unit capable of sufficiently matching the impedance of a high frequency load to a transmission path impedance without increasing its size and matching time even if a high frequency power of 70 MHz or higher is supplied thereto, and a plasma processing system using the same. A matching unit 41 comprises: a resonance rod 61 for transmitting a high frequency energy from a high frequency power supply 40 to a plasma producing electrode; a variable capacitor 62, connected to the resonance rod 61 and an electrode 21 in series, for adjusting the imaginary part of an impedance complex number; a housing 63 which is provided outside of the resonance rod 61 and which is grounded; a link coil 64 for exciting a high frequency energy to the resonance rod 61 and for adjusting the real part of the impedance complex number; and a controller 69 for controlling a driving part for the variable capacitor 62 and the link coil 64 so that a series resonance circuit is formed between the high frequency power supply 40 and the ground via plasma in a matching state.
摘要:
A plasma processing apparatus for performing a plasma process on a target substrate includes a process container configured to accommodate the target substrate and to reduce pressure therein. A first electrode is disposed within the process container. A supply system is configured to supply a process gas into the process container. An electric field formation system is configured to form an RF electric field within the process container so as to generate plasma of the process gas. A number of protrusions are discretely disposed on a main surface of the first electrode and protrude toward a space where the plasma is generated.
摘要:
A processing apparatus for performing a process on a surface of an object to be processed by applying a high frequency power to an electrode installed in an airtight processing chamber to convert a processing gas introduced therein into a plasma, includes a thermal transfer gas feed pathway for supplying a thermal transfer gas for controlling a temperature of the object to be processed to a minute space between the object to be processed and a holding unit installed on the electrode for attracting and holding the object to be processed through an inner portion of an insulating member disposed under the electrode. A portion of the thermal transfer gas feed pathway, which passes through the inner portion of the insulating member, is formed in a zigzag shape or a spiral shape with respect to a normal direction of a holding surface of the holding unit.