KR101029557B1 - Plasma generation apparatus and plasma treatment apparatus - Google Patents

Plasma generation apparatus and plasma treatment apparatus Download PDF

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Publication number
KR101029557B1
KR101029557B1 KR1020080109539A KR20080109539A KR101029557B1 KR 101029557 B1 KR101029557 B1 KR 101029557B1 KR 1020080109539 A KR1020080109539 A KR 1020080109539A KR 20080109539 A KR20080109539 A KR 20080109539A KR 101029557 B1 KR101029557 B1 KR 101029557B1
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South Korea
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antenna structures
type antenna
type
power supply
method
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KR1020080109539A
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Korean (ko)
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KR20100050308A (en
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송상호
안성일
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주식회사 아토
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Abstract

The present invention provides a plasma generating apparatus. The apparatus comprises: insulating plates Smn arranged in a matrix form along a first direction and a second direction crossing the first direction, a rectangular metal top plate on which the insulating plates are disposed and comprising rectangular through holes Hmn, and Antenna structures Tmn disposed on the insulating plates of the substrate. The antenna structures include first type antenna structures disposed adjacent to a corner of the metal top plate, second type antenna structures disposed adjacent to the side of the metal top plate, and the first type antenna structure is more than a second type antenna structure. It can consume a lot of power to form a uniform plasma.
Inductively Coupled Plasma, Multiple Dielectric Windows, Power Distribution, Multiple Antenna Structure

Description

Plasma Generator and Plasma Processing Apparatus {PLASMA GENERATION APPARATUS AND PLASMA TREATMENT APPARATUS}

The present invention relates to a plasma generating apparatus. More specifically, the present invention relates to an inductively coupled plasma generator.

BACKGROUND OF THE INVENTION As semiconductor substrates, flat panel display substrates, solar cell substrates, and the like become larger in area, manufacturing apparatuses for processing these are becoming larger in area. Plasma processing apparatuses are used in various processes such as etching, deposition, ion implantation, and material surface treatment.

As the plasma processing apparatus becomes larger, process uniformity and process speed are problematic. Process uniformity may depend on the uniformity of the density of the plasma.

One technical problem to be solved by the present invention is to provide a plasma generating apparatus capable of forming a uniform plasma.

According to an embodiment of the present invention, the plasma generating apparatus includes insulating plates Smn arranged in a matrix form along a first direction and a second direction crossing the first direction, and the insulating plates are disposed and rectangular through holes ( A rectangular metal top plate (Hmn), and antenna structures (Tmn) disposed on each of the insulating plates. The antenna structures may include first type antenna structures disposed adjacent to a corner of the metal upper plate, second type antenna structures disposed adjacent to a side of the metal upper plate, and the first type antenna structure may include the second type antenna structures. It can consume more power than the type antenna structure to form a uniform plasma.

In one embodiment of the present invention, the antenna structures may further include third type antenna structures surrounded by the second type antenna structures and the first type antenna structures.

In one embodiment of the present invention, the second type antenna structure may consume more power than the third type antenna structure.

In one embodiment of the present invention, the number m of insulating plates arranged in the first direction may be 3 or more, and the number n of insulating plates arranged in the second direction may be 3 or more.

In one embodiment of the present invention, the first type antenna structures may be electrically connected in parallel with each other, and the second type antenna structures may be electrically connected in parallel with each other.

In one embodiment of the present invention, the third type antenna structures may be electrically connected in parallel with each other.

In one embodiment of the present invention, the antenna structures may be formed on a printed circuit board or bent the conductive line.

In one embodiment of the present invention, the printed circuit board is a double-sided substrate, the antenna structures may include at least one of gold, silver, copper, nickel, tin.

In one embodiment of the present invention, the antenna structures may have the same shape.

In one embodiment of the present invention, at least one of a first reactance element portion electrically connected in series with the first type antenna structures, and a second reactance element portion electrically connected in series with the second type antenna structures. It may further include.

In one embodiment of the present invention, a first reactance element portion electrically connected in series with the first type antenna structures, a second reactance element portion electrically connected in series with the second type antenna structures, and the first It may further include at least one of the third reactance element portion electrically connected in series to the type 3 antenna structures.

In one embodiment of the present invention, the first reactance element portion, the second reactance element portion, and the third reactance element portion may include a variable reactance element.

In one embodiment of the present invention, a first current flowing in each antenna structure of the first type antenna structure is greater than a second current flowing in each antenna structure of the second type antenna structures, and the second type antenna The second current flowing in each antenna structure of the structures may be greater than the third current flowing in each antenna structure of the third type antenna structures.

In one embodiment of the present invention, further comprising a power supply for supplying power to the antenna structures (Tmn), wherein the power supply is the first type antenna structures, the second type antenna structures, and the third It may be electrically connected in parallel to the type antenna structures.

In one embodiment of the present invention, further comprising a plurality of power supply unit for supplying power to the antenna structures (Tmn), the first power supply unit supplies power to the first type antenna structures, the second power supply unit The second type antenna structures may supply power, and the third power supply may supply power to the third type antenna structures.

In at least one of the first driving frequency of the first power supply unit, the second driving frequency of the second power supply unit, and the third driving frequency of the third power supply unit may be different from each other.

In one embodiment of the present invention, at least one of the first type antenna structures, the second type antenna structures, and the third type antenna structures may have a different structure.

In one embodiment of the present invention, at least one of the first type antenna structures and the second type antenna structures may have a different structure.

In one embodiment of the present invention, each of the antenna structures Tmn may have a quadrangular shape and a multilayer structure.

In one embodiment of the present invention, each of the antenna structures Tmn is composed of a plurality of auxiliary antennas, and may be arranged to form a closed loop in the same plane.

According to an embodiment of the present invention, a plasma processing apparatus includes a vacuum container for plasma processing a substrate, a substrate holder disposed inside the vacuum container, a metal upper plate disposed on an upper surface of the vacuum container, and including a plurality of through holes; Antenna structures Tmns are disposed on the metal upper plate and arranged in a matrix in a first direction and in a second direction crossing the first direction to form a quadrangle. The antenna structures Tmns may include first type antenna structures disposed at corners of the quadrangle, second type antenna structures disposed adjacent to the sides of the quadrangle, and the second type antenna structures and first type. And third type antenna structures surrounded by the antenna structures, wherein power consumption of each of the first type antenna structures is greater than power consumption of each of the second type antenna structures, and each of the second type antenna structures Power consumption may be greater than power consumption of each of the third antenna structures.

In one embodiment of the present invention, the number m of insulating plates arranged in the first direction may be 3 or more, and the number n of insulating plates arranged in the second direction may be 3 or more.

In one embodiment of the present invention, the first type antenna structures may be electrically connected in parallel with each other, the second type antenna structures may be electrically connected in parallel with each other, and the third type antenna structures may be electrically connected with each other in parallel. have.

In one embodiment of the present invention, a first reactance element portion electrically connected in series with the first type antenna structures, a second reactance element portion electrically connected in series with the second type antenna structures, and the first It may further include at least one of the third reactance element portion electrically connected in series to the type 3 antenna structures.

In one embodiment of the present invention, a first current flowing in each antenna structure of the first type antenna structure is greater than a second current flowing in each antenna structure of the second type antenna structures, and the second type antenna The second current flowing in each antenna structure of the structures may be greater than the third current flowing in each antenna structure of the third type antenna structures.

In one embodiment of the present invention, further comprising a power supply for supplying power to the antenna structures (Tmn), wherein the power supply is the first type antenna structures, the second type antenna structures, and the third It may be electrically connected in parallel to the type antenna structures.

In one embodiment of the present invention, further comprising a plurality of power supply unit for supplying power to the antenna structures (Tmn), the first power supply unit supplies power to the first type antenna structures, the second power supply unit The second type antenna structures may supply power, and the third power supply may supply power to the third type antenna structures.

In at least one of the first driving frequency of the first power supply unit, the second driving frequency of the second power supply unit, and the third driving frequency of the third power supply unit may be different from each other.

In one embodiment of the present invention, at least one of the first type antenna structures, the second type antenna structures, and the third type antenna structures may have a different structure.

The plasma generating apparatus according to an embodiment of the present invention may classify the antenna structures according to geometric positions and supply different powers according to the positions. Accordingly, the plasma generating device can form a uniform large area plasma.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the invention to those skilled in the art. In the drawings, the thicknesses of layers (or films) and regions are exaggerated for clarity. Also, if it is mentioned that a layer (or film) is on "on" another layer (or film) or substrate, it may be formed directly on the other layer (or film) or substrate or a third layer between them. (Or membrane) may be interposed. Portions denoted by like reference numerals denote like elements throughout the specification.

1 is a view for explaining a plasma generating apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the plasma generating apparatus includes insulating plates Smn and 130 arranged in a matrix form along a first direction and a second direction crossing the first direction, and a quadrangle in which the insulating plates 130 are disposed. A metal upper plate 110 having through-holes Hmn having a shape, and antenna structures Tmn and 140 disposed on the insulating plates 130, respectively. The antenna structures Tmn and 140 form a plasma under the metal upper plate 110. M and n may be positive integers. M may be a hole in the first direction. N may be the number of holes in the second direction.

The vacuum vessel 100 may be a rectangular chamber. The vacuum container 100 may include an exhaust unit (not shown), a gas supply unit (not shown), a substrate (not shown), and a substrate holder (not shown). The vacuum container 100 may perform a plasma treatment process. The plasma treatment process may include at least one of etching, deposition, ion implantation, and surface treatment. The substrate and the substrate holder may be rectangular. The substrate may be an organic light emitting device substrate, a solar cell substrate, a liquid crystal display substrate, or a semiconductor substrate.

The metal upper plate 110 may be a flat plate. The metal upper plate 110 may be a cover of the vacuum container 100. The metal upper plate 110 may have a rectangular shape. The metal upper plate 110 may include at least one of aluminum, iron, and nickel. The metal upper plate 110 may be coded as a surface insulating film on a surface thereof. The surface insulating film may include an aluminum oxide film. The metal upper plate 110 may include a plurality of through holes Hmn. The plurality of through holes Hmn may be rectangular. The through holes Hmn may be arranged in a matrix form in the first direction and the second direction. The number m of holes in the first direction may be three. The number n of holes in the second direction may be three. The through hole may have a hole jaw 122. The hole tuck 122 may include a sealing part (not shown) for sealing with the insulating plate. The sealing part may include an O-ring groove.

The insulating plates Smn and 130 may be inserted into the through holes Hmn. The insulating plate 130 may be disposed on the hole tuck 122. The insulating plates 130 may include at least one of quartz, aluminum oxide, and ceramic. For convenience of drawing, only S31 of the insulating plates Smn 130 is shown. The insulating plates Smn 130 may have a uniform thickness according to a position. According to a modified embodiment of the present invention, the insulating plates (Smn, 130) may have a different thickness depending on the position.

As the plasma generating apparatus becomes larger in size, it may be difficult to process or manufacture the insulating plates 130. Accordingly, the insulating plates 130 are preferably processed or manufactured to an appropriate size. In the large-area plasma generating apparatus including the vacuum container 100, when a dielectric top plate (not shown) is formed as the top plate of the vacuum container 100, the dielectric top plate is connected to an antenna disposed on the pressure and the dielectric top plate. It may be vulnerable to thermal shock due to. Thus, the dielectric top plate needs to be increased in thickness so that the dielectric top plate can overcome the pressure and thermal shock. However, increasing the thickness of the dielectric top plate can reduce the efficiency of inductively coupled plasma generation. Therefore, the dielectric top plate is preferably separated into an appropriate thickness and size.

The antenna structures Tmn and 140 may be arranged in a matrix form on the insulating plates Smn and 130 in the first direction and the second direction. The antenna structures Tmn and 140 may generate an inductively coupled plasma under the insulating plates Smn 130. For convenience of illustration, only T31 of the antenna structures Tmn and 140 is shown. The antenna structures 140 may have the same physical shape or structure. The antenna structures Tmn and 140 may be formed on a printed circuit board. The printed circuit board may have a multilayer structure. Antenna structures formed on the printed circuit board may maintain the same structure. The antenna structures can be easily manufactured and designed to increase productivity. The printed circuit board may have heat resistance.

According to a modified embodiment of the present invention, the antenna structures Tmn and 140 may be formed by bending a wire or a pipe.

2 is a plan view illustrating a plasma generating apparatus according to an embodiment of the present invention. 2 is a plan view of Fig.

2 and 1, the plasma generating apparatus includes insulating plates Smn arranged in a matrix form along a first direction and a second direction crossing the first direction, and the insulating plates are arranged and penetrated in a rectangular shape. A metal top plate 110 including holes Hmn, and antenna structures Tmn disposed on each of the insulating plates Smn are included. The antenna structures Tmn may form a plasma on the lower plate 110. The antenna structures Tmn may form a 3 * 3 matrix. According to a modified embodiment of the present invention, m and / or n may be 3 or more.

The antenna structures Tmn are first type antenna structures A disposed adjacent to the edges of the metal upper plate 110, and second type antenna structures B disposed adjacent to the sides of the metal upper plate 110. And a third antenna structure C surrounded by the second type antenna structure B and the first type antenna structure A. FIG. The first type antenna structure A may include T31, T33, T13, and T11. The second type antenna structure B may include T32, T23, T12, and T21. The third antenna structure C may include T22. Each antenna structure of the first type antenna structure A may consume more power than each antenna structure of the second type antenna structure B. Each antenna structure of the second type antenna structure B may consume more power than the third type antenna structure C.

Each of the antenna structures of the first type antenna structure A, each of the antenna structures of the second type antenna structure B, and each of the antenna structures of the third type antenna structure may have the same structure. have. The plasma formed by the first type antenna structure A may be lost more to the walls of the vacuum vessel than the plasma formed by the second type antenna structure B. Therefore, in order to make the plasma density under the metal upper plate 110 uniform, power consumption of the first type antenna structure A may be greater than power consumption of the second type antenna structure B. Also, the plasma formed by the second type antenna structure B may be lost more to the walls of the vacuum vessel than the plasma formed by the third type antenna structure C. The power consumption of the second type antenna structure B may be greater than the power consumption of the third type antenna structure C. Accordingly, spatially nonuniform power may be supplied to the antenna structures Tmn to form a uniform plasma.

3 is a cross-sectional view illustrating a plasma generating apparatus according to an embodiment of the present invention. 3 is a cross-sectional view taken along line II ′ of FIG. 1.

 1 to 3, the first type plasma PA formed by the first type antenna structures T31, T33, T13, and T11; A is different from the two sides of the vacuum container 100 in a different direction. More than they can be lost. The second type plasma PB formed in the second type antenna structures T32, T23, T12, and T21; B may be lost more than other directions in one direction of the vacuum container. The third type plasma PC formed in the third type antenna structures T22 and C may be uniformly lost in all directions.

The first type plasma PA may include P31, P33, P13, and P11. The P31, P33, P13, and P11 are disposed below the T31, T33, T13, and T11, respectively, and may be formed by the T31, T33, T13, and T11, respectively. The second type plasma PB may include P32, P23, P12, and P21. The P32, P23, P12, and P21 may be formed under the T32, T23, T12, and T21, respectively. The P32, P23, P12, and P21 may be formed by the T32, T23, T12, and T21, respectively. The third type plasma PC may include P22. The P22 may be formed by T22.

The plasma may be recombined and extinguished in the wall of the vacuum vessel 100. As the wall of the vacuum chamber 100 approaches, a diffusion loss due to a difference in plasma density may occur. The antenna structures of the first type antenna structure A, the second type antenna structure B, and the third type antenna structure C may have the same physical shape. When the power consumption of each of the antenna structures of the first type antenna structure A is equal to the power consumption of the antenna structures of the second type antenna structure B, the average plasma density of the first type plasma PA is It may be lower than the average plasma density of the second type plasma (PB). In addition, when the power consumption of each of the antenna structures of the second type antenna structure B and the power consumption of each of the antennas of the third type antenna structure C are the same, the average of the second type plasma PB is equal. The plasma density may be lower than the average plasma density of the third type plasma PA. Such spatial imbalances in plasma density may adversely affect plasma processing. Therefore, in order to solve the spatial imbalance of the plasma density, the plasma density of the first to third plasma (PA, PB, PC) needs to be kept uniform. Power consumption of the antenna structures of the first type antenna structure A, power consumption of the antenna structures of the type 2 antenna structure B, and power consumption of the antenna structures of the type 3 antenna structure C are different from each other. There is a need.

4 to 5 are plan views illustrating a plasma generating apparatus according to other embodiments of the present invention.

Referring to FIG. 4, the plasma generating apparatus includes insulating plates Smn arranged in a matrix form along a first direction and a second direction crossing the first direction, and the insulating plates are arranged and rectangular through holes Hmn. A metal upper plate 110 including the antenna plate, and antenna structures Tmn disposed on each of the insulating plates. The antenna structures Tmn form a plasma under the metal upper plate 110. The antenna structures Tmn may form a 4 * 4 matrix.

The antenna structures Tmns may include a first type antenna structure A disposed adjacent to two side surfaces of the metal upper plate 110, a second type antenna structure B disposed adjacent to one side of the upper plate, And a third type antenna structure C disposed between the second type antenna structures. The metal upper plate 110 may have a rectangular shape. The first antenna structure A may be disposed adjacent to an edge of the metal upper plate 110. The second antenna structure B may be disposed adjacent to the side of the metal upper plate 110. The third type antenna structure C may be disposed on the center of the metal upper plate 110. The first type antenna structure A may include T11, T41, T44, and T14. The second type antenna structure B may include T21, T31, T42, T43, T34, T24, T13, and T12. The third antenna structure C may include T22, T32, T33, and T23.

Referring to FIG. 5, the plasma generating apparatus includes insulating plates Smn arranged in a matrix form along a first direction and a second direction crossing the first direction, and the insulating plates are arranged and rectangular through holes Hmn. A metal top plate), and antenna structures Tmn disposed on each of the insulating plates. The antenna structures Tmn form a plasma under the upper plate. The antenna structures may form a 2 * 3 matrix.

The antenna structures Tmn are first type antenna structures A disposed adjacent to two side surfaces of the metal upper plate 110, and second type antenna structures B disposed adjacent to one side of the upper plate. Can be separated. The metal upper plate 110 may have a rectangular shape. The first antenna structure A may be disposed adjacent to an edge of the metal upper plate 110. The second antenna structure B may be disposed adjacent to the side of the metal upper plate 110. The first type antenna structure A may include T11, T31, T32, and T12. The second type antenna structure B may include T21 and T12.

6 is a circuit diagram illustrating a plasma generating apparatus according to an embodiment of the present invention.

FIG. 7 is a diagram illustrating characteristics according to regions of a plasma generating apparatus according to an embodiment of the present invention.

6, 7 and 2, the power supply unit 170 may be electrically connected to the antenna structures Tmn. A matching circuit unit 160 for matching impedance may be disposed between the power supply unit 170 and the antenna structures Tmn.

The power supply unit 170 may be an AC or RF power supply. The output impedance of the power supply unit 170 may be 50 ohms. The power supply unit 170 may operate in a continuous mode or a pulse mode. The matching circuit unit 160 may be a means for maximally transferring power of the power source unit 170 to a load including the antenna structures Tmn.

The power supply unit 170 may supply power to the antenna structures Tmn. The antenna structures Tmn may include a first type antenna structure 240a, a second type antenna structure 240b, and a third type antenna structure 240c. The power supply unit 170 may be connected in parallel to the first type antenna structure 240a, the second type antenna structure 240b, and the third type antenna structure 240c. The first type antenna structure 240a may be disposed in region A. The second type antenna structure 240b may be disposed in the B region. The third type antenna structure 240c may be disposed in the C region.

The first type antenna structure 240a may be electrically connected to the first reactance element unit 150a in series. The second type antenna structure 240b may be electrically connected to the second reactance element unit 150b in series. The third type antenna structure 240c may be electrically connected to the third reactance element unit 150c in series. The first to third reactance element units 150a, 150b and 150c may be means for distributing different powers according to the first to third antenna structures. The reactance element units 150a, 150b, and 150c may include a variable reactance element. The variable reactance element may be a variable capacitor or a variable inductor.

According to a modified embodiment of the present invention, only the second and third variable element units 150b and 150c may be used to supply different power to the first to third antenna structures.

The first type antenna structure 240a may include four antenna structures T31, T33, T13, and T11. The antenna structures T31, T33, T13, and T11 of the first type antenna structure 240a may be electrically connected in parallel to each other. Z (T31), Z (T33), Z (T13), and Z (T11) are equivalent impedances including T31, T33, T13, and T11, respectively.

The second type antenna structure 240b may include four antenna structures T32, T23, T12, and T21. The antenna structures T32, T23, T12, and T21 of the second type antenna structure 240b may be electrically connected in parallel with each other. Z (T32), Z (T23), Z (T12), Z (T21) are equivalent impedances including T32, T23, T12, and T21.

The third type antenna structure 240c may include one antenna structure T22. Z (T22) may be an equivalent impedance including the third type antenna structures C and 240c. The total impedance of the first type antenna structure 240a may be equal to the total impedance of the second type antenna structure 240b. In order to supply more power to the antenna structures of the first type antenna structure 240a, the impedance of the first reactance element unit 150a may be smaller than the impedance of the second reactance element unit 150b. In addition, the total impedance of the second type antenna structure 240b may be smaller than the total impedance of the third type antenna structure 240c. In order to supply more power to the second type antenna structure 240b, the impedance of the second reactance element unit 150b may be smaller than the impedance of the third reactance element unit 150c. Thereby, the uniformity of plasma density can be ensured.

Power P (A) consumed by each antenna structure of the first antenna structure 240a may be greater than power P (B) consumed by each antenna structure of the second antenna structure 240b. have. Power P (B) consumed by each antenna structure of the second antenna structure 240b is greater than power P (C) consumed by each antenna structure of the third antenna structure 240c. Can be. Accordingly, the plasma density Np (A) under the first antenna structure A, the plasma density Np (B) under the second antenna structure B, and the third antenna structure C Uniformity of the lower plasma density Np (C) can be ensured.

The first current I (A) flowing in each antenna structure of the first type antenna structure A is the second current I (B) flowing in each antenna structure of the second type antenna structure B. May be greater than). The second current I (B) flowing in each antenna structure of the second type antenna structure B is the third current I (C) flowing in each antenna structure of the third type antenna structure C. May be greater than). Accordingly, accordingly, the plasma density Np (A) under the first antenna structure A and the lower portion of the second antenna structure B Uniformity of the plasma density Np (B) and the plasma density Np (C) under the third antenna structure C may be ensured.

8 is a circuit diagram illustrating a plasma generating apparatus according to another embodiment of the present invention.

2 and 8, the power supply unit 170 may be electrically connected to the antenna structures Tmn. The power supply unit 170 may be a plurality. The power supply unit 170 may include a first power supply unit 170a, a second power supply unit 170b, and a third power supply unit 170c. The driving frequencies of the first power supply unit 170a, the second power supply unit 170b, and the third power supply unit 170c may be the same.

The power supply unit 170 may supply power to the antenna structures Tmn. The antenna structures Tmn may be separated into the first type antenna structure A, the second type antenna structure B, and the third type antenna structure B.

A first matching circuit unit 160a may be disposed between the first power supply unit 170a and the first type antenna structure 240a to match an impedance. A second matching circuit unit 160b may be disposed between the second power supply unit 170b and the second type antenna structure 240b to match impedance. A third matching circuit unit 160c may be disposed between the third power supply unit 170c and the third type antenna structure 240c to match an impedance. The power supplies 170a, 170b, and 170c may be AC or RF power. Output impedances of the power supply units 170a, 170b, and 170c may be 50 ohms.

The first power supply unit 170a may be electrically connected to the first type antenna structure 240a. The first type antenna structure 240a may include four antenna structures T31, T33, T13, and T11. Z (T31), Z (T33), Z (T13), and Z (T11) may be equivalent impedances including T31, T33, T13, and T11, respectively. T31, T33, T13, and T11 may be connected in parallel.

The second power supply unit 170b may be electrically connected to the second type antenna structure 240b. The second type antenna structure 240b may include four antenna structures T32, T23, T12, and T21. Z (T32), Z (T23), Z (T12), and Z (T21) are equivalent impedances including T32, T23, T12, and T21, respectively. 32, T23, T12, and T21 may be connected in parallel.

The third power supply unit 170c may be electrically connected to the third type antenna structure 240c. The third type antenna structure C may include one antenna structure T22. Z (T22) is the equivalent impedance including T33.

Power consumed by each antenna structure of the first antenna structure 240a may be greater than power consumed by each antenna structure of the second antenna structure 240b. Power consumed by each antenna structure of the second antenna structure 240b may be greater than power consumed by each antenna structure of the third antenna structure 240c.

The first current I (A) flowing in each antenna structure of the first type antenna structure 240a is the second current I (B) flowing in each antenna structure of the second type antenna structure 240b. May be greater than). The second current I (B) flowing through each antenna structure of the second type antenna structure 240b is the third current I (C) flowing through each antenna structure of the third type antenna structure 240c. May be greater than).

According to a modified embodiment of the present invention, the driving frequencies of the first power source 170a, the second power source 170b, and the third power source 170c may be different from each other.

9 is a view for explaining a plasma generating apparatus according to another embodiment of the present invention. 9 is a cross-sectional view taken along the line II-II 'of FIG. 1.

1, 3, and 9, the plasma generating apparatus includes insulating plates Smn and 130 arranged in a matrix along a first direction and a second direction crossing the first direction, and the insulating plates ( The metal upper plate 110 having the through-holes Hmn 120 having a rectangular shape in which the 130 is disposed, and the antenna structures Tmn 140 are disposed on the respective insulating plates Smn 130. The antenna structures Tmn and 140 form a plasma under the insulator plates.

The vacuum vessel 100 may be a rectangular chamber. The vacuum container 100 may include an exhaust part (not shown), a gas supply part (not shown), a substrate 202, a substrate holder 204, and the like. The vacuum container 100 may perform a plasma treatment process. The plasma treatment process may include at least one of etching, deposition, ion implantation, and surface treatment. The substrate 202 and the substrate holder 204 may be rectangular. The substrate 202 may be an organic light emitting device substrate, a solar cell substrate, a liquid crystal display substrate, or a semiconductor substrate. The substrate holder may include at least one of a temperature controller (not shown), an electrostatic chuck, and a power applying unit. The temperature controller may adjust the temperature of the substrate. The electrostatic chuck may be a means for detaching the substrate. The power applying unit may be a means for applying an RF bias voltage to the substrate.

The antenna structures Tmn and 140 may be separated into the first type antenna structures A, the second type antenna structures B, and the third type antenna structures B. FIG. T21 may form the plasma P21 under the insulating plate S21. T23 may form a plasma P23 under the insulating plate T23. T22 may form the plasma P22 under the insulating plate S22.

The first type antenna structures A may be connected in parallel to each other and connected in series to a first reactive element unit (not shown). The second type antenna structures B may be connected in parallel to each other, and may be serially connected to the second reactive element unit 150b. The third type antenna structures C may be connected in series to the third reactive element unit 150c. The first to third reactive element units may be electrically connected to the matching circuit unit 160. The matching circuit unit 160 may be electrically connected to the power supply unit 170.

10 to 12 are perspective views illustrating an antenna structure according to one embodiment of the present invention.

Referring to FIG. 10, the antenna structure 540 may include first to fourth auxiliary antennas 540a, 540b, 540c, and 540d. The antenna structure 540 may have a rectangular shape. The antenna structure 540 may include a multilayer structure of an upper layer and a lower layer. The antenna structure 540 may be formed on the printed circuit board 559. The antenna structure may have a thickness of several millimeters to several centimeters. The antenna structure 540 may be rectangular in plan view. The length of the antenna structure along the first direction may be several tens of centimeters to several meters. The length of the antenna structure in the second direction crossing the first direction may be several tens of centimeters to several meters. The auxiliary antennas may be connected in parallel to each other through a connection line (not shown) to form one antenna structure. The power terminals P1, P2, P3, and P4 may be connected to the power supply unit through the connection wires. In addition, the ground terminals G1, G2, G3, and G4 may be grounded through the connection line. The connection wiring may be formed on a printed circuit board. Current flowing through each of the first to fourth auxiliary antennas 540a, 540b, 540c, and 540d may be formed to form a substantially closed loop on an upper surface and / or a lower surface.

 The first auxiliary antenna 540a includes a first power unit 541, a first extension part 543, a planar moving part 547, a second extension part 545, and a first ground part 549. can do. The first power part 541, the first extension part 543, the planar moving part 547, the second extension part 546, and the first ground part 549 may be electrically connected to each other continuously.

The first power unit 541 may include an inner line 541a and an outer line 541b that run in parallel in the upper layer. Both ends of the inner line 541a may be bent at right angles to contact the outer line 541b. One end P1 of the first power unit 541 may be supplied with power, and the other end of the first power unit 541 may be an extended portion of the external line 541b.

The first extension 543 may include an inner line 543a and an outer line 543b running in parallel in the upper layer. One end of the inner line 543a may be bent to contact the outer line 543b. One end of the outer line 543b may extend. The other end of the outer line 541b of the first power unit 541 and one end of the outer line 543b of the first extension part 543 may be in contact with each other at right angles. The contact portion of the first extension part 543 and the first power part 541 may be disposed at a corner of a quadrangle.

The second extension part 545 may have the same shape as the first extension part.

The first ground part 549 may have the same shape as the power part. The second extension part 545 and the first ground part 549 may be disposed at another corner rotated 90 degrees clockwise. The first power part 541 and the first extension part 543 may be disposed in an upper layer, and the second extension part 545 and the first ground part 549 may be disposed in a lower layer.

The other end of the inner line 543a of the first extension 543 and the other end of the outer line 543b are respectively the other end and the outer line 545b of the inner line 545a of the second extension 545. The other end of can be connected. The planar moving part may be formed by filling a conductive material in a through hole penetrating the printed circuit board.

The second to fourth auxiliary antennas 540b, 540c, 540c, and 540d may be symmetrically disposed while rotating clockwise in the same form as the first auxiliary antenna.

Referring to FIG. 11, the antenna structure 1140 may include first and second auxiliary antennas 1140a and 1140b. The antenna structure 1140 may be formed on the printed circuit board 1149. Power stages P1 and P2 may be connected to a power supply unit. In addition, the ground terminals G1 and G2 may be grounded. The antenna structure 1140 may be composed of an upper layer and a lower layer. The antenna structure 1140 may have a rectangular shape. The first auxiliary antenna 1140a includes a first power part 1141, a first extension part 1142, a second extension part 1143, a plane moving part 1144, a third extension part 1145, and a fourth It may include an extension 1146 and a first ground portion 1147. The first power part 1141, the first extension part 1142, the second extension part 1143, the planar moving part 1144, the third extension part 1145, the fourth extension part 1146, and the first extension part 1146. The ground portions 1147 may be electrically connected to each other continuously.

The first power unit 1141 may be disposed on a first side of an upper surface. The first extension part 1142 may be disposed on a second side of the upper surface. The second extension part 1143 may be disposed on a third side of the upper surface. The third extension part 1145 may be disposed on a third side of the lower surface. The fourth extension part 1146 may be disposed on a fourth side of the lower surface. The first ground portion 1147 may be disposed on a first side of the bottom surface. The first power part 1141, the second extension part 1143, the third extension part 1145, and the first ground part 1147 may have the same length. The first extension part 1142 and the fourth extension part 1146 may have the same length. The length of the first extension part 1142 may be twice the length of the first power part. The first power unit 1141 may have the same shape as the first ground unit 1147. The second extension part 1143 and the third extension part 1145 may have the same shape. The first extension part 1142 and the fourth extension part 1146 may have the same shape.

The first power unit 1141 includes an inner line 1141a and an outer line 1141b that run in parallel in the upper layer, and both ends of the inner line 1141a are perpendicular to the outer line 1141b. Can be bent. One end P1 of the first power unit 1141 may be supplied with power, and the other end of the first power unit 1141 may be an extended portion of the external line 1141.

The first extension 1142 may include an inner line 1142a and an outer line 1142b that run in parallel in the upper layer. Both ends of the inner line may be bent to contact the outer line. Both ends of the inner line 1142a may be bent at a right angle to connect to the outer line 1142b. Both ends of the outer line 1142b of the first extension part 1142 may extend. The other end of the outer line 1141b of the first power unit 1141 and one end of the outer line 1142b of the first extension part 1142 may be in contact with each other at right angles.

The second extension part 1143 may include an inner line 1143a and an outer line 1143b that run in parallel in the upper layer. One end of the inner line 1143a may be bent to contact the outer line 1143b. Both ends of the outer line 1143b of the second extension part 1143 may extend. The other end of the outer line 1142b of the first extension part 1142 and one end of the outer line 1143b of the second extension part 1143 may be in contact with each other at right angles.

The third extension part 1145 may have the same shape as the second extension part 1143.

The planar moving part 1144 may extend from an upper layer to a lower layer while connecting the second extension part 1143 and the third extension part 1145 to each other.

The fourth extension part may have the same shape as the first extension part. The third extension part 1145 may be locked at right angles to the fourth extension part 1146.

The upper limb first ground portion 1147 may have the same shape as the first power portion 1141. The fourth extension part 1146 may be locked at right angles to the first ground part 1141.

The second auxiliary antenna 1140b may be symmetrically disposed while rotating 180 degrees clockwise in the same shape as the first auxiliary antenna 1140a.

Referring to FIG. 12, the antenna structure 2140 may include first and second auxiliary antennas 2140a and 2140b. The antenna structure 2140 may be formed on the printed circuit board 2249. Power stages P1 and P2 may be connected to a power supply unit. In addition, the ground terminals G1 and G2 may be grounded. The antenna structure 2140 may have a multilayer structure.

The first auxiliary antenna 2140a includes a first power unit 2141, a first extension unit 2142, a second extension unit 2143, a plane moving unit 2144, a third extension unit 2145, and a fourth It may include an extension portion 2146 and a first ground portion 2147. The first power part 2141, the first extension part 2142, the second extension part 2143, the planar moving part 2144, the third extension part 2145, the fourth extension part 2146, and The first ground portion 2147 may be electrically connected to each other continuously.

The first power unit 2141 may be disposed on the first side of the upper layer. The first extension part 2142 may be disposed on a second side of the upper surface. The second extension part 2143 may be disposed on a third side of the upper surface. The third extension part 2145 may be disposed on a third side of the lower surface. The fourth extension part 2146 may be disposed on a fourth side of the lower surface. The first ground portion 2147 may be disposed on a first side of the bottom surface. The power part 2141, the second extension part 2143, the third extension part 2145, and the first ground part 2147 may have the same length. The first extension part 2142 and the fourth extension part 2146 may have the same length.

The first power part 2141, the second extension part 2143, the third extension part 2145, and the first ground part 2147 may have the same shape. The first extension part 2142 and the fourth extension part 2146 may have the same shape. The plane moving part 2144 may connect the second extension part 2143 on the upper surface and the third extension part 2145 on the lower surface.

The second auxiliary antenna 2140b may have the same shape as the first auxiliary antenna and may be disposed symmetrically by rotating 180 degrees clockwise.

The antenna structure 2140 may be formed on both sides of the printed circuit board 2249. The antenna structure 2140 may be formed by patterning the printed circuit board 2249. The antenna structure may include at least one of copper, gold, silver, aluminum, and tin.

13 is a view for explaining a plasma generating apparatus according to another embodiment of the present invention.

Referring to FIG. 13, the plasma generating apparatus includes antenna structures 3140a, 3140b, 3140c (Tmn) arranged in a matrix in a first direction and a second direction crossing the first direction to form a quadrangle. Insulating plates Smn 130 arranged in a matrix form along the first direction and a second direction crossing the first direction are disposed under the antenna structure. The metal upper plate 110 has through holes Hmn 120 having a rectangular shape in which the insulating plates 130 are disposed. The antenna structures Tmn form a plasma under the metal upper plate 110. The antenna structures Tmn may include first type antenna structures 3140a disposed at corners of the quadrangle, second type antenna structures 3140b disposed adjacent to the sides of the quadrangle, and the second type antennas. It may include a third type antenna structure 3140c disposed surrounded by the structures 3140b and the first type antenna structures 3140a. The first type antenna structures 3140a may be disposed in an area A, and the second antenna structures 3140b may be disposed in an area B. FIG. The third antenna structure 3140c may be disposed in the C region.

The metal upper plate 110 may have a rectangular shape. The first antenna structures 3140a may be disposed to be adjacent to corners of the metal upper plate 110. The second type antenna structures 3140b may be disposed adjacent to the sides of the metal upper plate 110. The third type antenna structure 3140c may be disposed on the center of the metal upper plate 110.

10 to 12, the first type antenna structures 3140a, the second type antenna structures 3140b, and the third type antenna structures 3140c may have physically different structures. . The first type antenna structures 3140a, the second type antenna structures 3140b, and the third type antenna structures 3140c may have different impedances.

The plasma formed under the metal upper plate 110 by the first type antenna structures 3140a, the second type antenna structures 3140b, and the third type antenna structures 3140c may have uniformity. have. The first type antenna structures 3140a may be connected in parallel with each other. The second type antenna structures 3140b may be connected in parallel with each other. A power supply unit (not shown) may be electrically connected to the first type antenna structures 3140a, the second type antenna structures 3140b, and the third type antenna 3140c in parallel.

1 is a view for explaining a plasma generating apparatus according to an embodiment of the present invention.

2 is a plan view illustrating a plasma generating apparatus according to an embodiment of the present invention.

4 to 5 are plan views illustrating a plasma generating apparatus according to another embodiment of the present invention.

6 is a circuit diagram illustrating a plasma generating apparatus according to an embodiment of the present invention.

FIG. 7 is a diagram illustrating characteristics according to regions of a plasma generating apparatus according to an embodiment of the present invention.

8 is a circuit diagram illustrating a plasma generating apparatus according to another embodiment of the present invention.

9 is a view for explaining a plasma generating apparatus according to another embodiment of the present invention.

10 to 12 are perspective views illustrating an antenna structure according to an embodiment of the present invention.

13 is a view for explaining a plasma generating apparatus according to another embodiment of the present invention.

Claims (29)

  1. Insulating plates Smn arranged in a matrix along a first direction and a second direction crossing the first direction;
    A rectangular metal upper plate on which the insulating plates are disposed and including through holes Hmn having a rectangular shape; And
    Antenna structures Tmn disposed on each of the insulating plates,
    The antenna structures include first type antenna structures disposed adjacent to an edge of the metal upper plate, second type antenna structures disposed adjacent to a side of the metal upper plate,
    The power consumption of each of the first type antenna structures is greater than the power consumption of each of the second type antenna structures,
    And the antenna structures are formed on a printed circuit board or bent by conducting wires.
  2. According to claim 1,
    And said antenna structures further comprise third type antenna structures surrounded by said second type antenna structures and said first type antenna structures.
  3. The method of claim 2,
    And the power consumption of each of the second type antenna structures is greater than the power consumption of each of the third type antenna structures.
  4. 3. The method of claim 2,
    The number (m) of the insulating plates arranged in the first direction is three or more, and the number n of the insulating plates arranged in the second direction is three or more.
  5. The method of claim 1,
    The first type antenna structures are electrically connected in parallel with each other,
    And the second type antenna structures are electrically connected in parallel with each other.
  6. 3. The method of claim 2,
    And the third type antenna structures are electrically connected in parallel with each other.
  7. delete
  8. The method of claim 1,
    The printed circuit board is a double-sided substrate, wherein the antenna structures include at least one of gold, silver, copper, nickel, tin.
  9. The method according to claim 1 or 2,
    And the antenna structures have the same shape.
  10. The method of claim 1,
    And at least one of a first reactance element portion electrically connected in series with the first type antenna structures, and a second reactance element portion electrically connected in series with the second type antenna structures. Generating device.
  11. 3. The method of claim 2,
    A first reactance element portion electrically connected in series with the first type antenna structures, a second reactance element portion electrically connected in series with the second type antenna structures, and an electrical series in series with the third type antenna structures Plasma generator further comprises at least one of the third reactance element to be connected.
  12. The method of claim 11,
    And the first reactance element portion, the second reactance element portion, and the third reactance element portion include a variable reactance element.
  13. The method of claim 11,
    The first current flowing through each antenna structure of the first type antenna structure is greater than the second current flowing through each antenna structure of the second type antenna structures, and the first current flowing through each antenna structure of the second type antenna structures. And a second current is greater than a third current flowing in each antenna structure of the third type antenna structures.
  14. 3. The method of claim 2,
    Further comprising a power supply for supplying power to the antenna structures (Tmn),
    And the power supply unit is electrically connected in parallel to the first type antenna structures, the second type antenna structures, and the third type antenna structures.
  15. 3. The method of claim 2,
    Further comprising a plurality of power supply for supplying power to the antenna structures (Tmn),
    A first power supply unit supplies power to the first type antenna structures,
    A second power supply unit supplies power to the second type antenna structures,
    And a third power supply unit supplies power to the third type antenna structures.
  16. The method of claim 15,
    At least one of a first driving frequency of the first power supply unit, a second driving frequency of the second power supply unit, and a third driving frequency of the third power supply unit is different from each other.
  17. 3. The method of claim 2,
    At least one of the first type antenna structures, the second type antenna structures, and the third type antenna structures has a different structure.
  18. The method of claim 1,
    And at least one of the first type antenna structures and the second type antenna structures has a different structure.
  19. The method of claim 1,
     Each of the antenna structures Tmn has a rectangular shape and has a multilayer structure.
  20. The method of claim 1,
    Each of the antenna structures (Tmn) is composed of a plurality of auxiliary antennas, characterized in that arranged to form a closed loop (closed loop) in the same plane.
  21. A vacuum vessel for plasma treating the substrate;
    A substrate holder disposed inside the vacuum container;
    A metal upper plate disposed on an upper surface of the vacuum container and including a plurality of through holes; And
    Antenna structures Tmns disposed on the metal upper plate and arranged in a matrix in a first direction and in a second direction crossing the first direction to form a quadrangle,
    The antenna structures Tmns may include first type antenna structures disposed at corners of the quadrangle, second type antenna structures disposed adjacent to the sides of the quadrangle, and the second type antenna structures and first type. And third type antenna structures surrounded by the antenna structures, wherein power consumption of each of the first type antenna structures is greater than power consumption of each of the second type antenna structures, and each of the second type antenna structures And the power consumption is greater than the power consumption of each of the third antenna structures.
  22. The method of claim 21,
    The number (m) of the insulating plates arranged in the first direction is three or more, and the number n of the insulating plates arranged in the second direction is three or more.
  23. The method of claim 21,
    The first type antenna structures are electrically connected in parallel with each other,
    The second type antenna structures are electrically connected in parallel with each other,
    And the third type antenna structures are electrically connected in parallel with each other.
  24. The method of claim 21,
    A first reactance element portion electrically connected in series with the first type antenna structures, a second reactance element portion electrically connected in series with the second type antenna structures, and an electrical series in series with the third type antenna structures Plasma processing apparatus further comprises at least one of the third reactance element to be connected.
  25. The method of claim 24,
    The first current flowing through each antenna structure of the first type antenna structure is greater than the second current flowing through each antenna structure of the second type antenna structures, and the first current flowing through each antenna structure of the second type antenna structures. And a second current is greater than a third current flowing in each antenna structure of the third type antenna structures.
  26. The method of claim 21,
    Further comprising a power supply for supplying power to the antenna structures (Tmn),
    And the power supply unit is electrically connected in parallel to the first type antenna structures, the second type antenna structures, and the third type antenna structures.
  27. The method of claim 21,
    Further comprising a plurality of power supply for supplying power to the antenna structures (Tmn),
    A first power supply unit supplies power to the first type antenna structures,
    A second power supply unit supplies power to the second type antenna structures,
    And a third power supply unit supplies power to the third type antenna structures.
  28. The method of claim 21,
    And at least one of a first driving frequency of the first power supply unit, a second driving frequency of the second power supply unit, and a third driving frequency of the third power supply unit is different from each other.
  29. The method of claim 21,
    At least one of the first type antenna structures, the second type antenna structures, and the third type antenna structures has a different structure.
KR1020080109539A 2008-11-05 2008-11-05 Plasma generation apparatus and plasma treatment apparatus KR101029557B1 (en)

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CN 200910211247 CN101742807A (en) 2008-11-05 2009-11-05 Plasma generation apparatus and plasma treatment apparatus
CN201410315816.3A CN104125696A (en) 2008-11-05 2009-11-05 Plasma generation apparatus and plasma treatment apparatus
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CN101742807A (en) 2010-06-16
TW201034527A (en) 2010-09-16

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