TWI584403B - Electrostatic chuck - Google Patents

Electrostatic chuck Download PDF

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TWI584403B
TWI584403B TW101135973A TW101135973A TWI584403B TW I584403 B TWI584403 B TW I584403B TW 101135973 A TW101135973 A TW 101135973A TW 101135973 A TW101135973 A TW 101135973A TW I584403 B TWI584403 B TW I584403B
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Taiwan
Prior art keywords
electrodes
grooves
electrostatic chuck
ceramic plate
radial
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TW101135973A
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Chinese (zh)
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TW201322365A (en
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帕克維傑D
珊索尼史蒂芬V
蔡振雄
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應用材料股份有限公司
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Description

靜電夾具 Static fixture

本發明的實施例大致關於用於支承基板的靜電夾具。 Embodiments of the present invention generally relate to electrostatic chucks for supporting substrates.

靜電夾具可以被用來固定基板,使基板在基板支座上處理。靜電夾具的元件可包括電極與溝槽,電極固定基板,溝槽設置在靜電夾具的一個表面上以提供一種背側氣體(back side gas)至基板背面。 An electrostatic chuck can be used to secure the substrate and process the substrate on the substrate support. The components of the electrostatic chuck may include electrodes and grooves, the electrodes fix the substrate, and the grooves are disposed on one surface of the electrostatic chuck to provide a back side gas to the back surface of the substrate.

典型的靜電夾具可能包括提供強夾具力的電極,但在卸夾具力時無法控制部分夾具力。此外,這些電極可從一側到另一側給予不均勻之夾具力。此外,在一些具有溝槽的靜電夾具中,在基板中心與邊緣的基板冷卻率可能不足。此外,可以在基板下方的氣體溝槽看到電弧。這些靜電夾具的元件可能會影響基板的處理。因此,本文茲提供改進靜電夾具的設計。 A typical electrostatic clamp may include an electrode that provides a strong clamp force, but some of the clamp force cannot be controlled when the clamp force is unloaded. In addition, these electrodes can impart uneven clamping force from side to side. In addition, in some electrostatic chucks with grooves, the substrate cooling rate at the center and edge of the substrate may be insufficient. In addition, an arc can be seen in the gas trench below the substrate. The components of these electrostatic chucks may affect the handling of the substrate. Therefore, this paper provides an improved design of the electrostatic chuck.

在此提供靜電夾具的實施例。在一些實施例中,靜電夾具包括:底板、陶瓷板,陶瓷板由底板所支撐,陶瓷板具有基板支座表面、至少一電極,該至少一電極設置於陶瓷板 內,以及複數個溝槽,複數個溝槽形成於陶瓷板的基板支座表面,其中等複數個溝槽包含一或更多圓形溝槽、一或更多徑向溝槽,以及一或更多偏溝槽。 An embodiment of an electrostatic chuck is provided herein. In some embodiments, the electrostatic chuck comprises: a bottom plate, a ceramic plate supported by the bottom plate, the ceramic plate having a substrate support surface, at least one electrode, the at least one electrode being disposed on the ceramic plate And a plurality of trenches formed on the surface of the substrate holder of the ceramic board, wherein the plurality of trenches comprise one or more circular trenches, one or more radial trenches, and one or More offset grooves.

在一些實施例中,一種用於固定基板的靜電夾具包括:底板、陶瓷板、陶瓷板由底板所支撐,陶瓷板具有基板支座表面,以及複數個電極,複數個電極設置於陶瓷板內,其中複數個電極之每一者可獨立地被控制以提供所欲之夾具力功率與頻率。 In some embodiments, an electrostatic chuck for fixing a substrate includes: a bottom plate, a ceramic plate, a ceramic plate supported by the bottom plate, the ceramic plate having a substrate support surface, and a plurality of electrodes, wherein the plurality of electrodes are disposed in the ceramic plate, Each of the plurality of electrodes can be independently controlled to provide the desired clamp force power and frequency.

在一些實施例中,一種用於處理基板的裝置包括:腔室,腔室定義出處理區域、靜電夾具,靜電夾具用於將基板固定於處理區域中,靜電夾具包含:底板、陶瓷板,陶瓷板由底板所支撐,陶瓷板具有基板支座表面、複數個電極,複數個電極設置於陶瓷板內,其中複數個電極之每一者可分開地被控制、以及複數個溝槽,複數個溝槽形成於陶瓷板的基板支座表面,其中複數個溝槽包含一或更多圓形溝槽、一或更多徑向溝槽,以及一或更多偏溝槽;以及複數個電源,每一個電源耦合至複數個電極中之相應電極使得每一個電極可以獨立地被控制。 In some embodiments, an apparatus for processing a substrate includes: a chamber defining a processing area, an electrostatic chuck, and an electrostatic chuck for fixing the substrate in the processing area, the electrostatic chuck comprising: a bottom plate, a ceramic plate, a ceramic The plate is supported by the bottom plate, the ceramic plate has a substrate support surface, a plurality of electrodes, and a plurality of electrodes are disposed in the ceramic plate, wherein each of the plurality of electrodes can be separately controlled, and a plurality of grooves, a plurality of grooves a groove formed on a surface of the substrate holder of the ceramic plate, wherein the plurality of grooves comprise one or more circular grooves, one or more radial grooves, and one or more offset grooves; and a plurality of power sources, each A power supply coupled to the respective ones of the plurality of electrodes allows each of the electrodes to be independently controlled.

其它和進一步的本發明的實施例將在下面描述 Other and further embodiments of the invention will be described below

100‧‧‧基板支座 100‧‧‧Substrate support

102‧‧‧腔室壁 102‧‧‧ chamber wall

101‧‧‧基板 101‧‧‧Substrate

103‧‧‧上升銷 103‧‧‧Upselling

107‧‧‧上升銷孔 107‧‧‧Upper pin hole

105‧‧‧上端 105‧‧‧Upper

109‧‧‧上升銷孔 109‧‧‧Upper pin hole

106‧‧‧內部容積 106‧‧‧ internal volume

104‧‧‧主體 104‧‧‧ Subject

110‧‧‧靜電夾具 110‧‧‧Electrostatic fixture

108‧‧‧處理容積 108‧‧‧Processing volume

113‧‧‧外部容積 113‧‧‧External volume

111‧‧‧饋通結構 111‧‧‧Feedback structure

114‧‧‧下部開口 114‧‧‧lower opening

112‧‧‧波紋管 112‧‧‧ Bellows

118‧‧‧開口 118‧‧‧ openings

115‧‧‧O形環 115‧‧‧O-ring

117‧‧‧凸緣 117‧‧‧Flange

119‧‧‧外壁/O形環 119‧‧‧Outer wall/O-ring

123‧‧‧固定器 123‧‧‧Retainer

121‧‧‧內壁 121‧‧‧ inner wall

122‧‧‧底板 122‧‧‧floor

120‧‧‧陶瓷板 120‧‧‧Ceramic plates

128‧‧‧處理表面 128‧‧‧Processing surface

124‧‧‧溝槽 124‧‧‧ trench

132‧‧‧功率源 132‧‧‧Power source

126‧‧‧電極 126‧‧‧electrode

136‧‧‧冷卻劑源 136‧‧‧ coolant source

130‧‧‧氣源 130‧‧‧ gas source

201‧‧‧縫隙 201‧‧‧ gap

131‧‧‧功率源 131‧‧‧Power source

202‧‧‧計數器鑽孔開口 202‧‧‧Counter drilling opening

134‧‧‧冷卻板 134‧‧‧Cooling plate

208‧‧‧緊固件 208‧‧‧fasteners

138‧‧‧升降機構 138‧‧‧ Lifting mechanism

212‧‧‧特徵部件 212‧‧‧Characteristics

200‧‧‧緊固件 200‧‧‧fasteners

217‧‧‧中心氣體線 217‧‧‧Central gas line

204‧‧‧頭部 204‧‧‧ head

219‧‧‧氣體通道 219‧‧‧ gas passage

206‧‧‧沉積環 206‧‧‧Sedimentation ring

224‧‧‧O型環 224‧‧‧O-ring

210‧‧‧計數器鑽孔開口 210‧‧‧Counter drilling opening

225‧‧‧O形環 225‧‧‧O-ring

211‧‧‧多孔插座 211‧‧‧Porous socket

302‧‧‧圓形溝槽 302‧‧‧Circular groove

221‧‧‧開口 221‧‧‧ openings

306‧‧‧偏溝槽 306‧‧‧Polt groove

223‧‧‧第二插座 223‧‧‧second socket

404‧‧‧外部電極 404‧‧‧External electrode

226‧‧‧彈簧 226‧‧ ‧ spring

408‧‧‧徑向 408‧‧‧ Radial

228‧‧‧O型環 228‧‧‧O-ring

402‧‧‧外部電極 402‧‧‧External electrode

304‧‧‧徑向溝槽 304‧‧‧ Radial groove

406‧‧‧區域 406‧‧‧Area

因此,可詳細理解本發明的上述特徵的方式,可參考各實施例獲得上文簡要概述的本發明的更具體描述,一些實施例圖示於附圖中。然而,應注意,附圖僅描繪本發明的典 型實施例,因此不應視為對本發明的範圍的限制,因為本發明可允許其他同等有效的實施例。 A more detailed description of the present invention, which is set forth in the <RTIgt; However, it should be noted that the drawings depict only the code of the invention. The type of embodiment is not to be construed as limiting the scope of the invention, as the invention may be otherwise

圖1示出基板支座根據本發明一些實施例的示意側視圖。 Figure 1 shows a schematic side view of a substrate support in accordance with some embodiments of the present invention.

圖2示出靜電夾具根據本發明的一些實施例的示意側視圖。 2 shows a schematic side view of an electrostatic chuck in accordance with some embodiments of the present invention.

圖3示出溝槽在靜電夾具的面對基板的表面根據本發明的一些實施例自上往下的示意圖。 Figure 3 shows a schematic view of the trench from the top of the surface of the electrostatic chuck facing the substrate in accordance with some embodiments of the present invention.

圖4A-B示出靜電夾具的電極根據本發明的一些實施例的自上而下的示意圖。 4A-B show top down schematic views of electrodes of an electrostatic chuck in accordance with some embodiments of the present invention.

為便於瞭解,在可能情況下使用相同標號來表示附圖所共有的相同元件。預期一個實施例中公開的元件可有利地用於其他實施例而不需特別敍述。 For ease of understanding, the same reference numbers will be used, where possible, to the It is contemplated that elements disclosed in one embodiment may be advantageously utilized in other embodiments without particular recitation.

本文提供靜電夾具的實施例。本發明的裝置可有利地提供經改良的基板處理,例如下列方式,如藉由將電弧限制在基板所設置的區域,電弧介於基板支座元件與電漿之間且/或藉由可控制地調整由靜電夾具所提供之夾具功率量值。另外,靜電夾具可被安裝使得它可以是可拆卸的和/或可更換的。在一些實施例中,基板支座可在低溫下使用,例如,範圍從攝氏約-40至約250度。在一些實施例中,基板支座可與基板一起使用,基板具有直徑大於約400毫米。其他和進一步的優點將在下面討論。 Embodiments of electrostatic chucks are provided herein. The apparatus of the present invention may advantageously provide improved substrate processing, such as by confining an arc to a region of the substrate where the arc is between the substrate support member and the plasma and/or by control Adjust the amount of fixture power provided by the electrostatic fixture. Additionally, the electrostatic chuck can be mounted such that it can be detachable and/or replaceable. In some embodiments, the substrate support can be used at low temperatures, for example, ranging from about -40 to about 250 degrees Celsius. In some embodiments, a substrate holder can be used with a substrate having a diameter greater than about 400 millimeters. Other and further advantages will be discussed below.

圖1示出根據本發明的一些實施例中的基板支座100的側面示意圖。正如圖1中所示,基板支座100是配置在接收或移除一個基板101的裝載位置。例如,如圖1中所示,在裝載位置,基板101可以停留在基板支座100上方的複數個上升銷103上。基板支座100可以是設置在處理腔室中(腔室壁102的剖視圖在圖1中示出)。處理腔室可以是任何合適的基板處理腔室。 FIG. 1 shows a side schematic view of a substrate holder 100 in accordance with some embodiments of the present invention. As shown in FIG. 1, the substrate holder 100 is disposed at a loading position where a substrate 101 is received or removed. For example, as shown in FIG. 1, in the loading position, the substrate 101 can rest on a plurality of rising pins 103 above the substrate holder 100. The substrate holder 100 can be disposed in a processing chamber (a cross-sectional view of the chamber wall 102 is shown in FIG. 1). The processing chamber can be any suitable substrate processing chamber.

基板支座100可包括:主體104。主體104可能有一個內部容積106和外部容積113。內部容積106可與處理腔室的處理容積108分離。內部容積106可以保持在大氣環境下舉行,例如,約14.7磅每平方英寸(psi),或在惰性氣氛下舉行,如氮氣(N2)或類似環境。內部容積106更與任何可能存在於處理腔室的內部容積106的氣體隔離和免於接觸。處理容積108可以保持在大氣壓或低於大氣壓的壓力下。外部容積可以對處理容積108開放且可被當作對上升銷103的通過容積。例如,基板支座100可繞過在上部上升銷孔107的上升銷103(它們是固定的),該等上部上升銷孔107設置在靜電夾具110內且下部上升銷孔109設置在主體104內。 The substrate holder 100 can include a body 104. The body 104 may have an interior volume 106 and an exterior volume 113. The internal volume 106 can be separated from the processing volume 108 of the processing chamber. Interior volume 106 may be maintained in place under atmospheric conditions, e.g., 14.7 pounds per square inch (PSI), or held under an inert atmosphere, such as nitrogen (N 2) or a similar environment. The interior volume 106 is more isolated and free of contact with any gas that may be present in the interior volume 106 of the processing chamber. The treatment volume 108 can be maintained at or below atmospheric pressure. The external volume may be open to the process volume 108 and may be considered as a passage volume to the lift pin 103. For example, the substrate holder 100 can bypass the rising pins 103 (which are fixed) of the upper rising pin holes 107, and the upper rising pin holes 107 are disposed in the electrostatic chuck 110 and the lower rising pin holes 109 are disposed in the body 104. .

內部容積106可由靜電夾具110以及饋通結構111加以封閉,靜電夾具110位於主體104的上端105,這可能被焊接或針焊至主體104的下部開口114。例如,如在圖1-2中示出的複數個O形環115,該等O形環115可設置在主體104的外壁119和內壁121之每一者與靜電夾具110之間。正如在圖1-2中示出,外部容積113可形成於內壁119和外壁121 之間。例如,如在圖1中,示出的波紋管112可包圍至少部分的饋通結構111且將處理容積108與腔室外部以及內部容積106加以隔離。波紋管112可以提供可撓性部分,以方便基板支座100的運動亦可提供途徑以提供氣體、電功率,冷卻劑等等至基板支座100。氣體、電功率,冷卻劑等等可由饋通結構111提供。正如在圖1中所示,饋通結構111可包括一個固定器123,固定器123在內部容積106中用於從饋通結構111提供單獨的氣體線、電力線和冷卻劑線。固定器123可以被利用來分隔各個氣體線、電力線和冷卻劑線,並且可以包括任何合適用於達此目的材料。雖然在圖1中示出設置於主體104上,固定器123可以設置在任何合適的位置,如饋通結構111或類似物內。 The interior volume 106 can be enclosed by an electrostatic chuck 110 and a feedthrough structure 111 that is located at the upper end 105 of the body 104, which may be welded or brazed to the lower opening 114 of the body 104. For example, as with a plurality of O-rings 115 as shown in FIGS. 1-2, the O-rings 115 can be disposed between each of the outer wall 119 and the inner wall 121 of the body 104 and the electrostatic chuck 110. As shown in FIGS. 1-2, an outer volume 113 may be formed on the inner wall 119 and the outer wall 121. between. For example, as in FIG. 1, the bellows 112 is shown to enclose at least a portion of the feedthrough structure 111 and to isolate the process volume 108 from the exterior of the chamber and the interior volume 106. The bellows 112 can provide a flexible portion to facilitate movement of the substrate support 100 or to provide a means to provide gas, electrical power, coolant, etc. to the substrate support 100. Gas, electrical power, coolant, and the like may be provided by the feedthrough structure 111. As shown in FIG. 1, the feedthrough structure 111 can include a fixture 123 in the interior volume 106 for providing separate gas lines, power lines, and coolant lines from the feedthrough structure 111. The holder 123 can be utilized to separate individual gas lines, power lines, and coolant lines, and can include any suitable material for this purpose. Although shown in FIG. 1 on the body 104, the holder 123 can be disposed in any suitable location, such as feedthrough structure 111 or the like.

波紋管112可被耦合到主體104的下部開口114,例如,藉由焊接或銅焊。波紋管112的相對下端116可被耦合到在腔室壁102的開口118。例如,如在圖1中所示,波紋管112的下端116可包括凸緣117,凸緣117可透過O形環119或銅墊片耦合至腔室壁102。O形環119可以設置在溝槽,溝槽位於面對腔室壁102的表面上的處理容積上。波紋管112與主體104以及腔室壁102的其他的設計和耦合方式是可能的。 The bellows 112 can be coupled to the lower opening 114 of the body 104, for example, by welding or brazing. The opposite lower end 116 of the bellows 112 can be coupled to the opening 118 at the chamber wall 102. For example, as shown in FIG. 1, the lower end 116 of the bellows 112 can include a flange 117 that can be coupled to the chamber wall 102 through an O-ring 119 or a copper gasket. O-ring 119 may be disposed in the groove on the processing volume on the surface facing chamber wall 102. Other designs and couplings of the bellows 112 to the body 104 and the chamber wall 102 are possible.

靜電夾具110可包括陶瓷板120和底板122。正如圖1中所示,陶瓷板120可以設置於底板122上且底板可以固定到主體104的上端部105。陶瓷板120可以包括任何合適的陶瓷材料,如氮化鋁(AlN)中,氧化鋁(Al2O3),或經摻雜 的陶瓷,如鈦摻雜的氧化鋁、鈰、釤摻雜的氮化鋁或類似物。正如圖1中所示,陶瓷板120可以包括複數個溝槽124,溝槽124形成在陶瓷板120的基板支座表面。溝槽可用於,例如,提供一種背側氣體至基板101的背側。相對於圖3,溝槽在下述將更詳細地討論。陶瓷板120可進一步包括複數個電極126,其中可以使用複數個電極126將基板101固定在靜電夾具110的處理表面128上。電極126在下述將更詳細討論且於圖4A-B中示出。底板122可以包括一個或多個的鉬(Mo)、鋁(Al)、鈦(Ti),碳化矽矽鋁合金複合材料,或類似物。 The electrostatic chuck 110 may include a ceramic plate 120 and a bottom plate 122. As shown in FIG. 1, the ceramic plate 120 may be disposed on the bottom plate 122 and the bottom plate may be fixed to the upper end portion 105 of the body 104. The ceramic plate 120 may comprise any suitable ceramic material, such as aluminum nitride (AlN), aluminum oxide (Al 2 O 3 ), or doped ceramics such as titanium doped alumina, lanthanum, cerium doped Aluminum nitride or the like. As shown in FIG. 1, the ceramic plate 120 may include a plurality of grooves 124 formed on the substrate support surface of the ceramic plate 120. The trench can be used, for example, to provide a backside gas to the back side of the substrate 101. With respect to Figure 3, the trenches are discussed in more detail below. The ceramic plate 120 can further include a plurality of electrodes 126 in which the substrate 101 can be secured to the processing surface 128 of the electrostatic chuck 110 using a plurality of electrodes 126. Electrode 126 is discussed in more detail below and illustrated in Figures 4A-B. The bottom plate 122 may include one or more of molybdenum (Mo), aluminum (Al), titanium (Ti), tantalum carbide aluminum alloy composite, or the like.

正如在圖2中所示,底板122可以由複數個緊固件200固定至主體104的上端105。這種緊固的方法可以允許靜電夾具110從基板支座100分離,如用於維修、更換、或類似的情況時。 As shown in FIG. 2, the bottom plate 122 can be secured to the upper end 105 of the body 104 by a plurality of fasteners 200. This method of fastening may allow the electrostatic chuck 110 to be detached from the substrate holder 100, such as for repair, replacement, or the like.

例如,緊固件200可以是螺釘,螺栓或類似物如在圖2中示出。例如,緊固件可用於壓縮底板122和主體104的上端105之間的O形環(如O形環115)、墊片,或類似物,以形成一個密封件。緊固件200可設置於底板122附近,例如,如均勻地間隔開以提供均勻的密封件,密封件介於底板122和上端105之間。在一些實施例中,緊固件200使用的數量可以是大約二十四。 For example, the fastener 200 can be a screw, bolt or the like as shown in FIG. For example, a fastener can be used to compress an O-ring (such as an O-ring 115), a gasket, or the like between the bottom plate 122 and the upper end 105 of the body 104 to form a seal. The fasteners 200 can be disposed adjacent the bottom plate 122, for example, as evenly spaced to provide a uniform seal between the bottom plate 122 and the upper end 105. In some embodiments, the fastener 200 can be used in an amount of about twenty-four.

在一些實施例中,緊固件200可被至少部分地嵌入於底板122,如在圖2中示出。例如,底板122可以包括複數個計數器鑽孔開口202以至少部分地讓緊固件200嵌入。正如在圖2中所示的,每個計數器鑽孔開口202部分地讓每個緊 固件200嵌入,使得每個緊固件的頭部204可能部分地延伸至底板122上方。例如,在一些實施例中,緊固件的每一個頭部204可能延伸至底板122上方約2毫米。該緊固件可以包括任何合適的材料,如不銹鋼、鈦(Ti)中的一個或多個,或類似物。 In some embodiments, the fastener 200 can be at least partially embedded in the bottom plate 122, as shown in FIG. For example, the bottom plate 122 can include a plurality of counter bore openings 202 to at least partially embed the fastener 200. As shown in Figure 2, each counter bore opening 202 partially allows each tight The firmware 200 is embedded such that the head 204 of each fastener may extend partially over the bottom plate 122. For example, in some embodiments, each head 204 of the fastener may extend approximately 2 millimeters above the bottom plate 122. The fastener may comprise any suitable material, such as one or more of stainless steel, titanium (Ti), or the like.

在一些實施例中,靜電夾具110可包括沉積環206,沉積環206設置於陶瓷板120附近和覆蓋至少一些底板122的露出部分,如在圖2中示出。如示出在圖2中,縫隙201存在於陶瓷板120和沉積環206之間。然而,縫隙201可以是可選的,並且在一些實施例中,沉積環206可接觸陶瓷板120。沉積環206可包括一個或多個氧化鋁(Al2O3)、碳化矽(SiC)、不銹鋼、鈦(Ti),或類似物。沉積環206可在基板處理期間保護底板122的暴露部分、緊固件200,或類似物免於損壞或防止材料沉積到這樣的表面上。例如,電漿損傷可包含電弧或類似物。 In some embodiments, the electrostatic chuck 110 can include a deposition ring 206 disposed adjacent the ceramic plate 120 and covering an exposed portion of at least some of the bottom plates 122, as shown in FIG. As shown in FIG. 2, a slit 201 exists between the ceramic plate 120 and the deposition ring 206. However, the slit 201 can be optional, and in some embodiments, the deposition ring 206 can contact the ceramic plate 120. The deposition ring 206 may include one or more of alumina (Al 2 O 3 ), tantalum carbide (SiC), stainless steel, titanium (Ti), or the like. The deposition ring 206 can protect exposed portions of the bottom plate 122, fasteners 200, or the like from damage or prevent deposition of material onto such surfaces during substrate processing. For example, plasma damage can include an electric arc or the like.

正如在圖2中示出,沉積環206可具有表面輪廓,表面輪廓大致平坦且在當被設置在靜電夾具110的處理表面128的處理位置時,表面輪廓會在基板101水平之下。或者,(圖中未示出),沉積環206可具有傾斜輪廓,如較厚的靠近基板101的外圍邊緣且較薄的靠近底板122的外圍邊緣。例如,一個傾斜的輪廓可能減少污染物、處理材料或類似物積累於沉積環206。另外,沉積環206可包括例如特徵部件212設置在沉積環206的下表面的位置以容納緊固件200的頭部204,使得沉積環206的下表面可接觸底板122。例如,特 徵部件212可以是溝槽,或複數個凹部或卡槽,用以容納緊固件200的頭部204。 As shown in FIG. 2, the deposition ring 206 can have a surface profile that is generally flat and that will be below the level of the substrate 101 when disposed at a processing location of the processing surface 128 of the electrostatic chuck 110. Alternatively, (not shown), the deposition ring 206 can have a sloped profile, such as a thicker peripheral edge near the substrate 101 and a thinner peripheral edge near the bottom plate 122. For example, a slanted profile may reduce accumulation of contaminants, processing materials, or the like in the deposition ring 206. Additionally, the deposition ring 206 can include, for example, a feature 212 disposed at a lower surface of the deposition ring 206 to receive the head 204 of the fastener 200 such that a lower surface of the deposition ring 206 can contact the bottom plate 122. For example, special The component 212 can be a groove, or a plurality of recesses or slots for receiving the head 204 of the fastener 200.

在一些實施例中,沉積環206可藉由複數個緊固件208被緊固至底板122。緊固件208可以是例如螺釘、螺栓或類似物,如在圖2中示出。類似於緊固件200,每個緊固件208可以透過計數器鑽孔開口210至少部分地嵌入沉積環206的表面通孔的。緊固件208可示於圖2的幻圖(ghosted view)中以顯示緊固件208可以設置在一個類似的徑向長度,但與緊固件200相對基板支座100的位置相比,緊固件208位於不同的徑向位置。例如,緊固件208可以包括任何合適的材料,如不銹鋼、鈦(Ti)或類似物中之一或更多者。 In some embodiments, the deposition ring 206 can be secured to the bottom plate 122 by a plurality of fasteners 208. The fastener 208 can be, for example, a screw, a bolt, or the like, as shown in FIG. Similar to the fastener 200, each fastener 208 can be at least partially embedded in the surface through-hole of the deposition ring 206 through the counter bore opening 210. The fastener 208 can be shown in the ghosted view of Figure 2 to show that the fastener 208 can be placed at a similar radial length, but the fastener 208 is located compared to the position of the fastener 200 relative to the substrate support 100. Different radial positions. For example, fastener 208 can comprise any suitable material, such as one or more of stainless steel, titanium (Ti), or the like.

正如在圖2中,氣源(下述討論的氣源130將在圖1中示出)可透過中心氣體線217耦合到複數個溝槽124。在一些實施例中,中心氣體線217可藉由設置在底板122的複數個氣體通道219耦合到複數個溝槽124。在一些實施例中,氣體通道219形成在底板122的上表面且由陶瓷板120的下表面所覆蓋。或者,(圖中未示出)的氣體通道219可設置在陶瓷板120、底板122,或者它們的組合。在一些實施例中,(圖中未示出)可能有約四個氣體通道219,每個氣體通道219源於靜電夾具110而靠近中心氣體線217。在一些實施例中,每個氣體通道219可以透過一個多孔插座211耦合到一個相應的溝槽124。例如,多孔插座211可包括任何合適的多孔陶瓷材料,如氮化鋁(AlN)、氧化鋁(Al2O3)、聚醚醚酮(PEEK),VESPEL®,或等等。多孔插座211也可以用來 在所希望的流動速率下提供一種氣體至溝槽124,例如,如在限制或防止因接近電極126所致之氣體電弧的密度或流動速率下,電極126可以工作在如下面所討論的高頻率和/或功率下。 As in FIG. 2, a gas source (gas source 130 discussed below will be shown in FIG. 1) can be coupled to a plurality of trenches 124 through a central gas line 217. In some embodiments, the central gas line 217 can be coupled to the plurality of trenches 124 by a plurality of gas channels 219 disposed in the bottom plate 122. In some embodiments, the gas passage 219 is formed on the upper surface of the bottom plate 122 and is covered by the lower surface of the ceramic plate 120. Alternatively, the gas passage 219 (not shown) may be disposed on the ceramic plate 120, the bottom plate 122, or a combination thereof. In some embodiments, (not shown) there may be about four gas passages 219, each of which originates from electrostatic chuck 110 and is adjacent to central gas line 217. In some embodiments, each gas channel 219 can be coupled to a respective trench 124 through a porous receptacle 211. For example, the porous receptacle 211 can comprise any suitable porous ceramic material such as aluminum nitride (AlN), alumina (Al 2 O 3 ), polyetheretherketone (PEEK), VESPEL®, or the like. The porous receptacle 211 can also be used to provide a gas to the trench 124 at a desired flow rate, for example, as in limiting or preventing the density or flow rate of the gas arc due to proximity to the electrode 126, the electrode 126 can operate At high frequencies and/or power as discussed below.

另外,較佳的是提供多孔插座211,多孔插座211介於每個氣體通道219和每個溝槽124(外溝槽124)之間,每個溝槽124設置於中心氣體線217附近。在這樣的實施例中,兩個插座結構可用於更容易地能夠插入多孔插座211,同時也將內部容積106與處理容積108分離保持。例如,多孔插座211可插入通過底板122中的開口221且包括O型環224(設置於第二插座223周圍)的第二插座223可插入於插座211後面以密封開口221。多孔插座211設置通過開口221還可以(可選地)包括O形圈(例如一個O形環225),O形圈設置於多孔插座附近以固定多孔插座於在陶瓷板120。另外,在一些實施例中(圖中未示出),每個多孔插座211可抵接複數個孔,該等複數個孔以流體相通方式設置在溝槽124基底上且透過每個多孔插座211將溝槽124耦合至氣體通道219。該等複數個孔可以較每個多孔插座211的直徑小,從而防止每個多孔插座211進入溝槽124。此外,當使用的O形環,如O形圈225,一個溝槽(未示出)可以形成在插座211的外表面上以容納O形環225。 Additionally, it is preferred to provide a porous receptacle 211 interposed between each gas passage 219 and each of the grooves 124 (outer grooves 124), each groove 124 being disposed adjacent the central gas line 217. In such an embodiment, the two socket structures can be used to more easily insert the porous socket 211 while also maintaining the internal volume 106 separately from the processing volume 108. For example, the porous socket 211 can be inserted through the opening 221 in the bottom plate 122 and the second socket 223 including the O-ring 224 (disposed around the second socket 223) can be inserted behind the socket 211 to seal the opening 221. The porous receptacle 211 is disposed through the opening 221 and may (optionally) include an O-ring (e.g., an O-ring 225) disposed adjacent the porous receptacle to secure the porous receptacle to the ceramic plate 120. Additionally, in some embodiments (not shown), each of the multi-hole receptacles 211 can abut a plurality of apertures that are disposed in fluid communication with the base of the trenches 124 and through each of the multi-hole receptacles 211. The trench 124 is coupled to the gas channel 219. The plurality of holes may be smaller than the diameter of each of the porous receptacles 211 to prevent each of the porous receptacles 211 from entering the trenches 124. Further, when an O-ring, such as an O-ring 225, is used, a groove (not shown) may be formed on the outer surface of the socket 211 to accommodate the O-ring 225.

在一些實施例中,中心氣體線217可使用一彈簧加載機構而按壓抵著底板122的背側表面。例如,如在圖2中所示,彈簧226可以設置於中心氣體線217的外部附近。彈簧 226可以以高張力方式操作以按壓設置在中心氣體線217端部的O型環228而抵著底板122的背側表面,以形成密封件之間的氣體線217和底板122的背側表面。彈簧226可壓緊夾具123於彈簧226的下端以提供必要的張力來按壓O形環228抵著底板122的背側表面,如在圖2中示出。 In some embodiments, the central gas line 217 can be pressed against the backside surface of the bottom plate 122 using a spring loading mechanism. For example, as shown in FIG. 2, the spring 226 may be disposed adjacent the exterior of the center gas line 217. spring The 226 can be operated in a high tension manner to press the O-ring 228 disposed at the end of the center gas line 217 against the back side surface of the bottom plate 122 to form the gas line 217 between the seals and the back side surface of the bottom plate 122. The spring 226 can compress the clamp 123 at the lower end of the spring 226 to provide the necessary tension to press the O-ring 228 against the backside surface of the bottom plate 122, as shown in FIG.

複數個溝槽124設置在靜電夾具110的處理表面128的情況根據本發明的一些實施例而在圖3中示出。例如,如上面所討論的複數個溝槽124可以被用來提供一種氣體至基板101的背側。例如,氣體可以用來促進陶瓷板120和基板101之間均勻的熱傳遞。另外,在溝槽124的壓力可以被監控,例如,由一個壓力轉換器或任何合適的壓力檢測裝置。例如,在溝槽124的壓力降可能產生基板101被損壞的信號,例如,如開裂或類似物。因壓力降之緣故,腔室中的沉積處理可以關閉以防止靜電夾具110曝露於處理環境下。 The case where a plurality of trenches 124 are disposed on the processing surface 128 of the electrostatic chuck 110 is illustrated in FIG. 3 in accordance with some embodiments of the present invention. For example, a plurality of trenches 124 as discussed above can be used to provide a gas to the back side of substrate 101. For example, gas can be used to promote uniform heat transfer between the ceramic plate 120 and the substrate 101. Additionally, the pressure at the grooves 124 can be monitored, for example, by a pressure transducer or any suitable pressure sensing device. For example, a pressure drop at trench 124 may result in a signal that substrate 101 is damaged, such as, for example, cracking or the like. Due to the pressure drop, the deposition process in the chamber can be closed to prevent the electrostatic chuck 110 from being exposed to the processing environment.

在一些實施例中,複數個溝槽124可以包括複數個圓形溝槽302、複數個徑向溝槽304,以及複數個偏溝槽306,如在圖3中示出。例如,在一些實施例中,複數個圓形溝槽302可能是同心圓且透過複數個偏溝槽306流體相通地耦合在一起。複數個徑向溝槽304可以流體相通地耦合且設置在最裡層圓形溝槽的內部以及最外層圓形溝槽的外部。然而,這樣的設計僅僅是示例性的,並且其它的配置是可能的。例如,在一些實施例中,徑向溝槽不連續地從陶瓷板120內部延伸到陶瓷板120外圍邊緣。在一些實施例中,徑向溝槽不延伸超過一組圓形溝槽之間,或不延伸長於任何合適限制在 溝槽124的電漿電弧的長度。例如,高功率或高頻率的電弧可能產生於長的、連續的徑向溝槽中。因此,在一些實施例中,利用複數個偏溝槽306以限制徑向溝槽304的長度。例如,如果使用長的、連續的徑向溝槽的話,高功率和/或高頻率電弧可能會產生於流過溝槽的氣體。在一些實施例中,長度的徑向和/或偏溝槽304、306的範圍可以從約2至約5公分。然而,其他長度可被利用。 In some embodiments, the plurality of trenches 124 can include a plurality of circular trenches 302, a plurality of radial trenches 304, and a plurality of offset trenches 306, as shown in FIG. For example, in some embodiments, the plurality of circular grooves 302 may be concentric and coupled together in fluid communication through a plurality of offset grooves 306. A plurality of radial grooves 304 may be coupled in fluid communication and disposed inside the innermost circular groove and outside of the outermost circular groove. However, such a design is merely exemplary, and other configurations are possible. For example, in some embodiments, the radial grooves extend discontinuously from the interior of the ceramic plate 120 to the peripheral edge of the ceramic plate 120. In some embodiments, the radial grooves do not extend between a set of circular grooves, or do not extend longer than any suitable limit The length of the plasma arc of the trench 124. For example, high power or high frequency arcs may be generated in long, continuous radial grooves. Thus, in some embodiments, a plurality of offset trenches 306 are utilized to limit the length of the radial trenches 304. For example, if long, continuous radial grooves are used, high power and/or high frequency arcs may be generated by the gas flowing through the grooves. In some embodiments, the length of the radial and/or offset grooves 304, 306 can range from about 2 to about 5 centimeters. However, other lengths can be utilized.

圖4A-B示出根據本發明的一些實施例中的複數個電極126。例如,如上面所討論的複數個電極126,電極126可以被用來固定基板101於靜電夾具110的處理表面128上。例如,在一些實施例中,排列在圖4A-B中的複數個電極126可用於操控卸除靜電夾具110的夾具力,以將弓形基板夾緊,或類似物。卸除夾具力期間,例如,氣體仍然可以流過溝槽124且/或溝槽中的壓力比處理容積108中的壓力還高。因此,例如,為了防止基板101突然關閉靜電夾具110,一些電極126可以在其他電極逐步將基板101卸除夾具力之前加以關閉。例如,在夾緊過程中,較大的基板,如400毫米或更大,可呈弓形。因此,為了將弓形基板對靜電夾具110平坦化,一些電極126可以工作在更高的功率和/或頻率之下,而其他的電極126用以平坦化基板。 4A-B illustrate a plurality of electrodes 126 in accordance with some embodiments of the present invention. For example, as with the plurality of electrodes 126 discussed above, the electrodes 126 can be used to secure the substrate 101 to the processing surface 128 of the electrostatic chuck 110. For example, in some embodiments, the plurality of electrodes 126 arranged in Figures 4A-B can be used to manipulate the clamping force of the electrostatic chuck 110 to clamp the arcuate substrate, or the like. During the removal of the clamp force, for example, gas may still flow through the grooves 124 and/or the pressure in the grooves is higher than the pressure in the process volume 108. Therefore, for example, in order to prevent the substrate 101 from suddenly closing the electrostatic chuck 110, some of the electrodes 126 may be turned off before the other electrodes gradually remove the clamp force from the substrate 101. For example, a larger substrate, such as 400 mm or larger, may be arcuate during the clamping process. Therefore, in order to planarize the arcuate substrate against the electrostatic chuck 110, some of the electrodes 126 may operate at higher power and/or frequency while other electrodes 126 are used to planarize the substrate.

正如圖4A中所示,複數個電極126可能是排列成一個同心圓的圖案,其中複數個外部電極404設置於複數個內部電極402附近。例如,如在圖4A中示出,陶瓷板120的每個象限包括外部電極404,外部電極404從內部電極徑向地向外 設置。然而,任何合適數量的內部和外部電極402、404可以被利用。此外,各自相鄰電極的極性可以被控制以與彼此相反使得兩個相鄰電極有不同的極性。 As shown in FIG. 4A, the plurality of electrodes 126 may be arranged in a concentric pattern in which a plurality of external electrodes 404 are disposed adjacent to the plurality of internal electrodes 402. For example, as shown in FIG. 4A, each quadrant of the ceramic plate 120 includes an outer electrode 404 that is radially outward from the inner electrode. Settings. However, any suitable number of inner and outer electrodes 402, 404 can be utilized. Furthermore, the polarity of the respective adjacent electrodes can be controlled to be opposite to each other such that two adjacent electrodes have different polarities.

如在圖4B中示出,複數個電極126可能是排列成在陶瓷板120附近的徑向圖案,其中每個電極佔據區域406,區域406介於陶瓷板120的中心和外圍邊緣之間,陶瓷板120由一個徑向角408所定義出。例如,如在圖4B中示出,在一些實施例中,有可能是佔用八個區域406的八個電極126,其中每個區域406由相同的徑向角408定義出。此外,各自相鄰電極的極性可以被控制以與彼此相反使得兩個相鄰電極有不同的極性。 As shown in FIG. 4B, a plurality of electrodes 126 may be arranged in a radial pattern adjacent the ceramic plate 120, with each electrode occupying a region 406 between the center and the peripheral edge of the ceramic plate 120, ceramic Plate 120 is defined by a radial angle 408. For example, as shown in FIG. 4B, in some embodiments, it is possible to occupy eight electrodes 126 of eight regions 406, with each region 406 being defined by the same radial angle 408. Furthermore, the polarity of the respective adjacent electrodes can be controlled to be opposite to each other such that two adjacent electrodes have different polarities.

返回到圖1,基板支座100可以包括饋通結構111以提供一種途徑,例如,提供氣體至複數個溝槽124,提供電功率至複數個電極126,或提供來自外部來源的類似物至處理腔室。例如,如在圖1中示出,氣源130和功率源131、132可以分別透過饋通結構111耦合至複數個溝槽124和複數個電極126。例如,(未示出)的功率源131、132可以是複數個電源,例如,使得每個電源可耦合到每個電極126使得每個電極126可以被獨立地控制。例如,電源132可以利用以提供在一個頻率範圍從約13.56兆赫至大約100兆赫的射頻功率。在一些實施例中,該頻率可以是約60兆赫。例如,電源131可用於提供直流功率,例如,用以卸夾具力或夾緊基板101。例如,氣源130可透過中心氣體線217耦合到複數個溝槽124,如在圖2中所示。 Returning to Figure 1, the substrate support 100 can include a feedthrough structure 111 to provide a means, for example, to provide gas to a plurality of trenches 124, to provide electrical power to a plurality of electrodes 126, or to provide analogs from external sources to the processing chamber. room. For example, as shown in FIG. 1, gas source 130 and power sources 131, 132 can be coupled to a plurality of trenches 124 and a plurality of electrodes 126 through feedthrough structure 111, respectively. For example, the power sources 131, 132 (not shown) may be a plurality of power sources, for example, such that each power source can be coupled to each of the electrodes 126 such that each electrode 126 can be independently controlled. For example, power source 132 can be utilized to provide RF power at a frequency ranging from about 13.56 MHz to about 100 MHz. In some embodiments, the frequency can be about 60 MHz. For example, the power source 131 can be used to provide DC power, for example, to unload the clamp force or clamp the substrate 101. For example, gas source 130 can be coupled to a plurality of trenches 124 through central gas line 217, as shown in FIG.

任選地,所述基板支座100可以包括冷卻板134,冷卻板134設置在靜電夾具110的底板122下面的內部容積106。例如,如在圖1中所示,冷卻板134可以是直接接觸內部容積,內部容積面對底板122的表面。然而,本實施例中的冷卻板134僅僅是示例性且冷卻板可能沒有直接接觸底板122。冷卻板134可以包括複數個冷卻通道(未示出),冷卻通道用於將冷卻劑循環穿過冷卻板134。例如,冷卻劑可以包括任何合適的液體或氣體冷卻劑。冷卻劑可以透過冷卻劑源136被供給到冷卻板134,冷卻劑源136透過饋通結構111耦合到冷卻板134。儘管示出佔據主體104的一小部分,在一些實施例中,冷卻板134可以延伸朝向饋通結構111以佔據內部容積106和/或外部容積113的主要部分。冷卻板134可具有與基板101大致相似的區域,如在圖1中示出。因此,冷卻板134可以是能夠提供冷卻至基本上基板101的所有領域的。 Optionally, the substrate holder 100 can include a cooling plate 134 that is disposed within the interior volume 106 below the bottom plate 122 of the electrostatic chuck 110. For example, as shown in FIG. 1, the cooling plate 134 may be a surface that directly contacts the interior volume that faces the bottom plate 122. However, the cooling plate 134 in this embodiment is merely exemplary and the cooling plate may not directly contact the bottom plate 122. Cooling plate 134 may include a plurality of cooling passages (not shown) for circulating coolant through cooling plate 134. For example, the coolant can include any suitable liquid or gas coolant. The coolant may be supplied to the cooling plate 134 through the coolant source 136, and the coolant source 136 is coupled to the cooling plate 134 through the feedthrough structure 111. Although shown as occupying a small portion of the body 104, in some embodiments, the cooling plate 134 can extend toward the feedthrough structure 111 to occupy a major portion of the interior volume 106 and/or the exterior volume 113. The cooling plate 134 can have a region that is substantially similar to the substrate 101, as shown in FIG. Therefore, the cooling plate 134 may be in all fields capable of providing cooling to substantially the substrate 101.

在操作時,從裝載位置移動基板支座至處理位置,升降機構138可接合饋通結構111,使得饋通結構111將基板支座100升起至處理位置。當基板支座100被升起朝向基板101時上升銷103可以保持靜止,基板101放在上升銷103上,如在圖1中示出。 In operation, moving the substrate holder from the loading position to the processing position, the lift mechanism 138 can engage the feedthrough structure 111 such that the feedthrough structure 111 raises the substrate support 100 to the processing position. The riser pin 103 can remain stationary as the substrate holder 100 is raised toward the substrate 101, and the substrate 101 is placed on the riser pin 103, as shown in FIG.

前述說明是針對本發明的實施例而行,然在不背離本發明的基本範圍下,可提出本發明的其他與進一步的實施例。 The foregoing description is directed to the embodiments of the present invention, and further and further embodiments of the present invention can be made without departing from the scope of the invention.

100‧‧‧基板支座 100‧‧‧Substrate support

102‧‧‧腔室壁 102‧‧‧ chamber wall

101‧‧‧基板 101‧‧‧Substrate

103‧‧‧上升銷 103‧‧‧Upselling

105‧‧‧上端 105‧‧‧Upper

107‧‧‧上升銷孔 107‧‧‧Upper pin hole

109‧‧‧上升銷孔 109‧‧‧Upper pin hole

106‧‧‧內部容積 106‧‧‧ internal volume

104‧‧‧主體 104‧‧‧ Subject

110‧‧‧靜電夾具 110‧‧‧Electrostatic fixture

108‧‧‧處理容積 108‧‧‧Processing volume

113‧‧‧外部容積 113‧‧‧External volume

111‧‧‧饋通結構 111‧‧‧Feedback structure

114‧‧‧下部開口 114‧‧‧lower opening

112‧‧‧波紋管 112‧‧‧ Bellows

118‧‧‧開口 118‧‧‧ openings

115‧‧‧O形環 115‧‧‧O-ring

117‧‧‧凸緣 117‧‧‧Flange

119‧‧‧外壁/O形環 119‧‧‧Outer wall/O-ring

123‧‧‧固定器 123‧‧‧Retainer

121‧‧‧內壁 121‧‧‧ inner wall

122‧‧‧底板 122‧‧‧floor

120‧‧‧陶瓷板 120‧‧‧Ceramic plates

128‧‧‧處理表面 128‧‧‧Processing surface

124‧‧‧溝槽 124‧‧‧ trench

132‧‧‧功率源 132‧‧‧Power source

126‧‧‧電極 126‧‧‧electrode

136‧‧‧冷卻劑源 136‧‧‧ coolant source

Claims (20)

一種用於固定一基板的靜電夾具,該靜電夾具包括:一底板;一陶瓷板,該陶瓷板由該底板所支撐,該陶瓷板具有一基板支座表面;一主體,該主體耦接至該底板形成該底板下方的一封閉空腔,其中該封閉空腔包含一徑向內部中空容積與一徑向外部中空容積,其中該徑向內部中空容積為密封的且未流體相通地耦接至該基板支座表面,且其中該徑向外部中空容積流體相通地耦接至該基板支座表面;複數個第一電極,該等電極設置於該陶瓷板內且該等電極具有一第一極性;以及複數個第二電極,該等複數個第二電極設置於該陶瓷板內且該等複數個第二電極具有一第二極性,該第二極性相反於該第一極性,其中該等複數個第一電極與該等複數個第二電極之每一者耦接於一射頻功率源以及一直流功率源以獨立地控制每一個電極,以提供一所期望的夾具力功率與頻率。 An electrostatic chuck for fixing a substrate, the electrostatic chuck comprising: a bottom plate; a ceramic plate supported by the bottom plate, the ceramic plate having a substrate bearing surface; a body coupled to the body The bottom plate forms a closed cavity below the bottom plate, wherein the closed cavity includes a radially inner hollow volume and a radially outer hollow volume, wherein the radially inner hollow volume is sealed and not fluidly coupled to the a substrate support surface, wherein the radially outer hollow volume is fluidly coupled to the substrate support surface; a plurality of first electrodes, the electrodes are disposed in the ceramic plate and the electrodes have a first polarity; And a plurality of second electrodes, the plurality of second electrodes are disposed in the ceramic plate, and the plurality of second electrodes have a second polarity, the second polarity being opposite to the first polarity, wherein the plurality of Each of the first electrode and the plurality of second electrodes is coupled to an RF power source and a DC power source to independently control each of the electrodes to provide a desired fixture power And frequency. 如請求項1所述之靜電夾具,其中該等複數個第一電極與該等複數個第二電極設置於同心圓圖案內,使得該等複數個第一電極與該等複數個第二電極包含複數個外部電極,該等外部電極設置於複數個內部電極附近。 The electrostatic chuck of claim 1, wherein the plurality of first electrodes and the plurality of second electrodes are disposed in a concentric pattern such that the plurality of first electrodes and the plurality of second electrodes comprise A plurality of external electrodes disposed adjacent to the plurality of internal electrodes. 如請求項1所述之靜電夾具,其中該等複數個第一電極與該等複數個第二電極設置於該陶瓷板的四個象限內,且其中該陶瓷板的每一個象限包含一個外部電極,該外部電極對一個內部電極徑向地向外設置。 The electrostatic chuck of claim 1, wherein the plurality of first electrodes and the plurality of second electrodes are disposed in four quadrants of the ceramic plate, and wherein each quadrant of the ceramic plate comprises an external electrode The external electrode is disposed radially outward of an internal electrode. 如請求項3所述之靜電夾具,其中各自相鄰的電極的一極性相反於其他電極的極性,使得兩相鄰電極不具有相同極性。 The electrostatic chuck of claim 3, wherein one of the adjacent electrodes has a polarity opposite to that of the other electrodes such that the two adjacent electrodes do not have the same polarity. 如請求項1所述之靜電夾具,其中該等複數個第一電極與該等複數個第二電極以一徑向圖案交替排列於該陶瓷板附近,使得兩相鄰電極不具有相同極性。 The electrostatic chuck of claim 1, wherein the plurality of first electrodes and the plurality of second electrodes are alternately arranged in a radial pattern in the vicinity of the ceramic plate such that the two adjacent electrodes do not have the same polarity. 如請求項5所述之靜電夾具,其中該等複數個第一電極與該等複數個第二電極總共包含八個電極,且其中每一個電極佔據一區域,該區域介於該陶瓷板的一中心以及該陶瓷板的一周圍邊緣之間,且該區域由一相同的徑向角所定義。 The electrostatic chuck of claim 5, wherein the plurality of first electrodes and the plurality of second electrodes comprise a total of eight electrodes, and wherein each of the electrodes occupies a region, the region being interposed between the ceramic plates The center and a peripheral edge of the ceramic plate are defined by an identical radial angle. 如請求項1所述之靜電夾具,其中該等複數個第一電極之每一者以及該等複數個第二電極之每一者可被獨立地控制。 The electrostatic chuck of claim 1, wherein each of the plurality of first electrodes and each of the plurality of second electrodes are independently controllable. 如請求項1所述之靜電夾具,其中該外部容積係經由一個或更多個上升銷孔耦接至該基板支座表面。 The electrostatic chuck of claim 1, wherein the external volume is coupled to the substrate support surface via one or more rising pin holes. 如請求項1所述之靜電夾具,進一步包括:一氣體線,使用一彈簧按壓該氣體線抵著該底板的一背側表面。 The electrostatic chuck of claim 1, further comprising: a gas line pressing the gas line against a back side surface of the bottom plate using a spring. 如請求項1所述之靜電夾具,其中該內部容積與該外部容積由一內壁所分開,該內壁設置於位於該靜電夾具的該底板下方的該空腔內。 The electrostatic chuck of claim 1, wherein the inner volume and the outer volume are separated by an inner wall disposed in the cavity below the bottom plate of the electrostatic chuck. 如請求項1所述之靜電夾具,其中一冷卻板至少部分設置於位於該靜 電夾具的該底板下方的該內部容積及該外部容積內。 The electrostatic chuck of claim 1, wherein a cooling plate is at least partially disposed at the static The internal volume below the bottom plate of the electrical clamp and the outer volume. 一種用於固定一基板的靜電夾具,該靜電夾具包括:一底板;一陶瓷板,該陶瓷板由該底板所支撐,該陶瓷板具有一基板支座表面;至少一個電極,該等至少一個電極設置於該陶瓷板內;以及複數個溝槽,該等複數個溝槽形成於該陶瓷板的該基板支座表面內,其中該等複數個溝槽包含一個或更多個同心圓形溝槽、一個或更多個徑向溝槽,以及一個或更多個非徑向偏溝槽,其中該個一或更多個同心圓形溝槽以同心地圍繞該陶瓷板的一中心軸而設置,該一個或更多個徑向溝槽流體相通地耦接於該一個或更多個同心圓形溝槽,該一個或更多個非徑向偏溝槽流體相通地耦接至該一個或更多個同心圓形溝槽,其中該一個或更多個非徑向偏溝槽之每一者為線性溝槽,其中選擇該一個或更多個非徑向偏溝槽之每一者的一長度以限制電弧,且其中該一個或更多個徑向溝槽皆未自該陶瓷板的一內部連續延伸至該陶瓷板的一外圍邊緣。 An electrostatic chuck for fixing a substrate, the electrostatic chuck comprising: a bottom plate; a ceramic plate supported by the bottom plate, the ceramic plate having a substrate bearing surface; at least one electrode, the at least one electrode Provided in the ceramic plate; and a plurality of grooves formed in the surface of the substrate holder of the ceramic plate, wherein the plurality of grooves comprise one or more concentric circular grooves One or more radial grooves, and one or more non-radial offset grooves, wherein the one or more concentric circular grooves are disposed concentrically around a central axis of the ceramic plate The one or more radial grooves are fluidly coupled to the one or more concentric circular grooves, the one or more non-radial offset grooves being fluidly coupled to the one or a further concentric circular groove, wherein each of the one or more non-radial offset grooves is a linear groove, wherein each of the one or more non-radial offset grooves is selected a length to limit the arc, and wherein the one or more paths Garnered a continuous groove extending from the interior of the ceramic plate to a peripheral edge of the ceramic plate. 如請求項12所述之靜電夾具,其中該一個或更多個同心圓形溝槽包括複數個同心圓形溝槽,該等同心圓形溝槽透過該一個或更多個非徑向偏溝槽而流體相通地彼此耦合。 The electrostatic chuck of claim 12, wherein the one or more concentric circular grooves comprise a plurality of concentric circular grooves that pass through the one or more non-radial sulcus The slots are fluidly coupled to each other. 如請求項13所述之靜電夾具,其中該等複數個同心圓形溝槽包括一最裡層的圓形溝槽和一最外層的圓形溝槽。 The electrostatic chuck of claim 13 wherein the plurality of concentric circular grooves comprise an innermost circular groove and an outermost circular groove. 如請求項14所述之靜電夾具,其中該一個或更多個非徑向偏溝槽包括四 個非徑向偏溝槽,該等四個非徑向偏溝槽彼此均勻地間隔開,每個非徑向偏溝槽將該最裡層的圓形溝槽流體相通地耦合至該最外層的圓形溝槽。 The electrostatic chuck of claim 14, wherein the one or more non-radial offset grooves comprise four Non-radial offset trenches, the four non-radial offset trenches being evenly spaced from one another, each non-radial offset trench fluidly coupling the innermost circular trench to the outermost layer Circular groove. 如請求項14所述之靜電夾具,其中該一個或更多個徑向溝槽包含複數個徑向溝槽,其中該等複數個徑向溝槽中之至少一者流體相通地耦合至一最裡層圓形溝槽的一內徑且延伸朝向該陶瓷板的一中心,且該等複數個徑向溝槽之至少一者流體相通地耦合至一最外層圓形溝槽的一外徑,並延伸朝向該陶瓷板的一外圍邊緣。 The electrostatic chuck of claim 14 wherein the one or more radial grooves comprise a plurality of radial grooves, wherein at least one of the plurality of radial grooves is fluidly coupled to one of the most An inner diameter of the inner circular groove extending toward a center of the ceramic plate, and at least one of the plurality of radial grooves is fluidly coupled to an outer diameter of an outermost circular groove, And extending toward a peripheral edge of the ceramic plate. 如請求項12所述之靜電夾具,其中該一個或更多個徑向溝槽與該一個或更多個非徑向偏溝槽經調整尺寸以將一電漿之電弧限制產生在流通過該等複數個溝槽的一氣體中。 The electrostatic chuck of claim 12, wherein the one or more radial grooves and the one or more non-radial offset grooves are sized to generate a plasma arc limitation through the flow Waiting for a plurality of grooves in a gas. 如請求項17所述之靜電夾具,其中該一個或更多個徑向溝槽以及該一個或更多個非徑向偏溝槽的一長度為約2公分至約5公分。 The electrostatic chuck of claim 17, wherein the one or more radial grooves and the one or more non-radial offset grooves have a length of from about 2 cm to about 5 cm. 如請求項12所述之靜電夾具,更包含:一組氣體通道,該組氣體通道設置於該底板或該陶瓷板之至少一者,該組氣體通道配置成用以將一氣體提供至該等複數個溝槽,其中該組氣體通道中的每一個氣體通道透過一多孔插座而被耦合至相應的該等複數個溝槽之一者。 The electrostatic chuck of claim 12, further comprising: a set of gas passages disposed on the bottom plate or at least one of the ceramic plates, the set of gas passages being configured to provide a gas to the A plurality of trenches, wherein each of the plurality of gas channels is coupled to one of the plurality of the plurality of trenches through a porous socket. 一種用於處理一基板的裝置,該裝置包括:一腔室,該腔室定義出一處理區域; 一靜電夾具,該靜電夾具用於將一基板固定於該處理區域中,該靜電夾具包含:一底板;一陶瓷板,該陶瓷板由該底板所支撐,該陶瓷板具有一基板支座表面;複數個第一電極,該等複數個第一電極設置於該陶瓷板內,且該等複數個第一電極具有一第一極性;以及複數個第二電極,該等複數個第二電極設置於該陶瓷板內且該等複數個第二電極具有一第二極性,該第二極性相反於該第一極性,其中該等複數個第一電極與該等複數個第二電極被獨立地控制以提供一所期望的夾具力功率與頻率;以及複數個溝槽,該等複數個溝槽形成於該陶瓷板的該基板支座表面內,其中該等複數個溝槽包含一個或更多個同心圓形溝槽、一個或更多個徑向溝槽,以及一個或更多個非徑向偏溝槽,其中該個一或更多個同心圓形溝槽圍繞該陶瓷板的一中心軸,該一個或更多個徑向溝槽流體相通地耦接於該一個或更多個同心圓形溝槽,該一個或更多個非徑向偏溝槽流體相通地耦接至該一個或更多個同心圓形溝槽,其中該一個或更多個非徑向偏溝槽之每一者為線性溝槽,其中選擇該一個或更多個非徑向偏溝槽之每一者的一長度以限制電弧,且其中該一個或更多個徑向溝槽皆未自該陶瓷板的一內部連續延伸至該陶瓷板的一外圍邊緣;以及複數個電源,每一個電源耦合至該等複數個電極中之一相應電極使得每一個電極可以獨立地被控制。 A device for processing a substrate, the device comprising: a chamber defining a processing region; An electrostatic chuck for fixing a substrate in the processing region, the electrostatic chuck comprising: a bottom plate; a ceramic plate supported by the bottom plate, the ceramic plate having a substrate bearing surface; a plurality of first electrodes, the plurality of first electrodes are disposed in the ceramic plate, and the plurality of first electrodes have a first polarity; and a plurality of second electrodes, the plurality of second electrodes are disposed on The plurality of second electrodes in the ceramic plate and having a second polarity opposite to the first polarity, wherein the plurality of first electrodes and the plurality of second electrodes are independently controlled Providing a desired clamp force power and frequency; and a plurality of grooves formed in the substrate support surface of the ceramic plate, wherein the plurality of grooves comprise one or more concentricities a circular groove, one or more radial grooves, and one or more non-radial offset grooves, wherein the one or more concentric circular grooves surround a central axis of the ceramic plate, The one or more The one or more concentric circular trenches are fluidly coupled to the trench, the one or more non-radial offset trenches being fluidly coupled to the one or more concentric circular trenches Wherein each of the one or more non-radial offset trenches is a linear trench, wherein a length of each of the one or more non-radial offset trenches is selected to limit arcing, and wherein The one or more radial grooves are not continuously extended from an interior of the ceramic plate to a peripheral edge of the ceramic plate; and a plurality of power sources each coupled to a respective one of the plurality of electrodes This allows each electrode to be independently controlled.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090201622A1 (en) * 2004-03-31 2009-08-13 Applied Materials, Inc. Detachable electrostatic chuck for supporting a substrate in a process chamber
US7848077B2 (en) * 2002-06-18 2010-12-07 Canon Anelva Corporation Electrostatic chuck device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7848077B2 (en) * 2002-06-18 2010-12-07 Canon Anelva Corporation Electrostatic chuck device
US20090201622A1 (en) * 2004-03-31 2009-08-13 Applied Materials, Inc. Detachable electrostatic chuck for supporting a substrate in a process chamber

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