摘要:
In order to effect a plasma process at a high rate, such as formation of a high-quality deposit film having very uniform thickness and quality over a large-area substrate, (1) an oscillation frequency of an RF generator is used in the range of 30 to 600 MHz, (2) a matching circuit and a cathode electrode are connected through a transmission line and RF power is supplied through the transmission line, (3) the cathode electrode is of an electrically conductive structure of a rod shape and at a connection part between the cathode electrode and an inner conductor of the transmission line, an external shape of a cross section of the cathode electrode is the same as an external shape of a cross section of the inner conductor, and (4) at least the connection part between the cathode electrode and the inner conductor of the transmission line is covered by a dielectric member having the same external shape as an external shape of a transmission medium in the cross section of the transmission line.
摘要:
A plasma CVD apparatus comprising a substantially enclosed reaction chamber containing substrate holding means and a cathode electrode arranged therein, wherein a high frequency power from a high frequency power source is supplied to said cathode electrode to generate plasma between said substrate holding means having a subtrate positioned thereon and said cathode electrode whereby plasma-processing said substrate, characterized in that said cathode electrode comprises a plurality of conductor members situated on substantially the same axis which are capacitively coupled by a dielectric member. A plasma-processing method using said cathode electrode.
摘要:
A plasma CVD process comprises conducting film formation in a reaction chamber capable of being substantially vacuumed in which a plurality of cylindrical substrates are spacedly arranged on a concentric circle in said reaction chamber such that a desired discharge space is formed at the central position of the inside of said reaction chamber and a cathode electrode is disposed at the central position of said discharge space, by introducing a film-forming gas into said discharge space and applying a high frequency power from a high frequency power source to said cathode electrode to produce plasma between said plurality of cylindrical substrates and said cathode electrode, whereby forming a deposited film on the surface of each of said plurality of cylindrical substrates, characterized in that an earth shield comprising a non-magnetic material and a soft magnetic material or an insulating material being stacked is disposed at each of the opposite end portions of said cathode electrode, and a very-high-frequency energy of a frequency range of 60 MHz or more from said high frequency power source is applied to said cathode electrode to produce plasma in said reaction chamber whereby forming a deposited film on the surface of each of said plurality of cylindrical substrates. And a VHF plasma CVD apparatus suitable for practicing the plasma CVD process.
摘要:
A plasma processing apparatus has a substrate holder, arranged in a vessel which can be reduced in pressure, for placing a substrate to be processed there on, a process gas fed into the reaction vessel, and a cathode electrode for supplying a high-frequency wave power from a high-frequency wave power source to an interior of the reaction vessel through a matching circuit, and is characterized in that at least a part of the reaction vessel is constituted by a dielectric member, and the cathode electrode is arranged outside the reaction vessel, so that a plasma distribution in the reaction vessel is made uniform and a uniform plasma process for a substrate to be processed is made possible. The plasma process includes CVD, sputtering, etching or ashing.
摘要:
To improve the processing rate and uniformity in a plasma processing for a substrate having a relatively large area, a plasma processing apparatus includes a reaction vessel which has a portion made of a dielectric member, which accommodates a film formation substrate, and which can be evacuated, an evacuating means and a gas supply means for supplying a predetermined gas into the reaction vessel, a cathode electrode arranged in a position outside the reaction vessel where the cathode electrode opposes the film formation substrate accommodated in the reaction vessel via the dielectric member, and a high frequency power supply means (a matching circuit and a high frequency power supply) for supplying high frequency power of 30 MHz to 300 MHz to the cathode electrode. The high frequency power of 30 MHz to 300 MHz is supplied to the cathode electrode to generate a plasma between the dielectric member and the film formation substrate.
摘要:
One or more mismatching portions in which a characteristic impedance of a high frequency transmission cable of a cathode electrode is changed in a traveling direction of an incident wave of the high frequency are provided on the cathode electrode for use in plasma processing, whereby the plasma processing can form a high-quality deposited film having an extremely uniform film thickness and a homogeneous film quality on a substrate at high speed, can effectively form a semiconductor device, can also form the high-quality deposited film having the extremely uniform film thickness and the homogeneous film quality in the axial direction and the circumferential direction of the cylindrical substrate on the surfaces of a plurality of cylindrical substrates at high speed, and can effectively form the semiconductor device.
摘要:
A high frequency introducing means is provided which comprises a high frequency electrode having a shape of a bar or plate for generating plasma by high frequency power, and an adjustment mechanism for adjusting an absolute value of reactance between an end of the electrode opposite to a high frequency power introducing point of the electrode and a grounded portion. A plasma treatment apparatus and a plasma treatment method are also provided employing the above high frequency introducing means. A deposition film of high quality is formed stably and efficiently in an extremely uniform thickness and an extremely uniform quality at a high speed on a base member of a large area by adjusting the absolute value of the reactance.
摘要:
A plasma processing apparatus has a substrate holder, arranged in a reaction vessel which can be reduced in pressure, for placing a substrate to be processed thereon, means for feeding a process gas into the reaction vessel, and a cathode electrode for supplying a high-frequency wave power from a high-frequency wave power source to an interior of the reaction vessel through a matching circuit, and is characterized in that at least a part of the reaction vessel is constituted by a dielectric member, and the cathode electrode is arranged outside the reaction vessel, so that a plasma distribution in the reaction vessel is made uniform, and a uniform plasma process for a substrate to be processed is made possible. The plasma process includes CVD, sputtering, etching or ashing.
摘要:
Provided is a process for efficiently forming a high-quality deposited film at a high deposition rate in the quality equivalent to or higher than that of films formed by the RF plasma CVD process. A stock gas is introduced under a reduced pressure into a reaction container provided with a cathode electrode inside and a high-frequency power in the range of 50 to 300 MHz is supplied to the cathode electrode, whereby ions of the stock gas with energy of 40 or more eV are made to hit against a substrate, thereby forming a deposited film thereon.
摘要:
A VHF plasma CVD process in which a cathode electrode is electrically divided into a plurality of elements in the axial direction of a cylindrical substrate, and a very-high-frequency energy with a frequency in the range of 60 MHz to 300 MHz is supplied to each of the divided cathode electrode elements by way of a high frequency power supply means for generating a plasma in a reaction chamber thereby forming a deposited film; and a VHF plasma CVD apparatus suitable for carrying out the VHF plasma process.