JP2017535048A - Rf電力アプリケーションのための可変電力用コンデンサ - Google Patents
Rf電力アプリケーションのための可変電力用コンデンサ Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G7/06—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture having a dielectric selected for the variation of its permittivity with applied voltage, i.e. ferroelectric capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32174—Circuits specially adapted for controlling the RF discharge
- H01J37/32183—Matching circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32174—Circuits specially adapted for controlling the RF discharge
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
- H03H7/40—Automatic matching of load impedance to source impedance
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Abstract
Description
Γ=(εr(0)―εr(Emax))/εr(0)で示されるか、またはその代わりにDCバイアス電圧の観点から、Γ=(εr(0)―εr(Vmax))/εr(0)として示される。同調性は誘電体が所与のEmax(又はVmax)で動作可能な比誘電率の理論上使用に適した範囲を示し、所与のEmax(又はVmax)とは誘電体が故障を発生させることなく許容可能な最大の電界強度(又は電圧)を示す。
調整可能な誘電体コンデンサ7A1及び7A2:1250pF〜2500pF
調整可能な誘電体コンデンサ7B1及び7B2:75pF〜150pF
Claims (21)
- 少なくとも50ワットで動作可能なRF電力アプリケーションで利用される電力用コンデンサであって、前記電力用コンデンサが、固体誘電材料を有するコンデンサ誘電体(17)により分離される、少なくとも2つのRF電極(18,19)を備え、
前記固体誘電材料が制御可能な比誘電率(1)を有することを特徴とする、電力用コンデンサ(7)。 - コンデンサ誘電体(17)の少なくとも一部に対して印加されるDCバイアス電圧(12)を変動させることにより、コンデンサ誘電体(17)の比誘電率(1)が制御可能である請求項1に記載の電力用コンデンサ(7)。
- コンデンサ誘電体(17)が少なくとも2つのDCバイアス電極(26、27、28)を含み、DCバイアス電極(26、27、28)全体に印加されるDCバイアス電圧(4,12)を変動させることにより、比誘電率(1)が制御可能である、請求項1又は2に記載の電力用コンデンサ(7)。
- 少なくとも1つのDCバイアス電極(26、27、28)がコンデンサ(7)のRF電極(18、19)のいずれか1つとして形成される、請求項3に記載の電力用コンデンサ(7)。
- コンデンサ誘電体(17)が少なくとも0.1mm、又は好ましくは少なくとも0.3mm、又はより好ましくは少なくとも0.5mmの厚みとなる固体誘電体のブロック、タブレット、又はディスクを含む、請求項1〜4のいずれか1項に記載の、電力用コンデンサ(7)。
- 固体誘導材料が常誘電体セラミック材を含む、請求項1〜5のいずれか1項に記載の、電力用コンデンサ(7)。
- 常誘電体セラミック材がチタン酸バリウムストロンチウムを含む、請求項6に記載の、電力用コンデンサ(7)。
- 常誘電体セラミック材が実質的にモノリシックの焼結ブロックとして形成される、請求項7に記載の、電力用コンデンサ(7)。
- RF電極(18、19)の少なくとも1つ及び/又はDCバイアス電極の少なくとも1つが、コンデンサ誘電体(17)の範囲内に実質的に封入されて形成される、請求項3〜8のいずれか一項に記載の、電力用コンデンサ(7)。
- コンデンサ誘電体(17)がRF電極(18、19)及び/又は導体パッド又は回路基板若しくはサーキットボードの回路に溶接、はんだ付け、若しくはろう付けされる、請求項1〜9のいずれか一項に記載の、電力用コンデンサ。
- 第一及び第二電力用コンデンサが、第一(71、7A1、7B1)及び第二(72、7A2、7B2)電力用コンデンサの各コンデンサ誘電体(17)の同調可能な比誘電率(εr1、εr2)を変動させる、可変DCバイアス電源(VDC)へ接続する共通の誘電率制御電圧ノード(10)を共有するように配置される、請求項1から10のいずれか一項に記載の第一電力用コンデンサ(71、7A1、7B1)及び請求項1から10のいずれか一項に記載の第二電力用コンデンサ(72、7A2、7B2)を含む、第一複合コンデンサ(7、7A、7B)。
- 共通の誘電率制御電圧ノード(10)でのRF電圧から及び/又はRF電極(18、19)の少なくとも1つでのRF電圧から、DCバイアス電源(VDC)をデカップリングするために配置されている、少なくとも1つのデカップリング素子(15、16)を含む、請求項11に記載の、第一複合コンデンサ。
- 少なくとも1つのデカップリング素子(23)がコンデンサ誘電体(17)の抵抗部を含む、請求項12に記載の、第一複合コンデンサ。
- 直列接続された電力用コンデンサ(7)の連続体(71、72、73、74 ... 7n)が、DCバイアスノード(101、102、103、104 ... 10n)に隣接して接続され、且つ
各DCバイアスノード(101、102、103、104 ... 10n)が、前記それぞれのコンデンサ誘電体(17)及び隣接する電力用コンデンサをバイアスするため、DCバイアス電圧(VDC1、VDC2、VDC3、VDC4 … VDCn)への接続に配置されている、連続体として接続される、請求項1から10までの一項に記載の3つ以上の電力用コンデンサ(7)を含む第二複合コンデンサ。 - 代替DCバイアスノード(101、103、 102、104 … 10n)が、代替的な異なる極性のDCバイアス電圧(VDC1、VDC3、 VDC2、VDC4 … VDCn)接続のために配置される、請求項14に記載の第二複合コンデンサ。
-
請求項1から10のいずれか1項に記載の1つ以上の第三電力用コンデンサ(71、72)と、
請求項11から13のいずれか1項に記載の1つ以上の第一複合コンデンサ(7A、7B)と、
請求項14及び15のいずれか1項に記載の1つ以上の第二複合コンデンサ(7A、7B)と、
第四電力用コンデンサ(7V)と、
を含み、
1つ以上の第三電力用コンデンサ(71、72)及び/又は1つ以上の複合コンデンサ(7A、7B)が第一調整速度で調整可能なキャパシタンスを持ち、且つ第四コンデンサ(7V)が第二調整速度で調整可能であり、第二調整速度が第一調整速度よりも遅いものである、
リアクタンス回路。 - 第四電力用コンデンサ(7V)が真空可変コンデンサを含む、請求項16に記載の、リアクタンス回路。
- RF電力の少なくとも50ワットをRF負荷(36)に提供するRF電源システム(20、30)であって、請求項11から13までの一項に記載の1つ以上の第一複合コンデンサ(7A、7B)、請求項14又は15の一項に記載の1つ以上の第二複合コンデンサ及び/又は請求項16又は請求項17に記載のリアクタンス回路を含む、RF電源システム(20、30)。
- 電力用コンデンサ(7)の同調可能な誘電体(17)全体に印加される誘電率制御電圧を変化させることにより特徴づけされる、RF電源システムの電力用コンデンサ(7)のキャパシタンスを制御する方法。
- RF電源システム(30)が、RF発電機、インピーダンス整合回路及び/又はプラズマチャンバのプラズマ制御回路を構成する、請求項18に記載のRF電源システム、又は請求項19に記載の方法。
- 請求項5から10のいずれか一項に記載の、ブロック、タブレット又はディスクとして形成されているコンデンサ誘電体(17)。
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JP2020527824A (ja) * | 2017-06-23 | 2020-09-10 | 北京北方華創微電子装備有限公司Beijing Naura Microelectronics Equipment Co., Ltd. | 可変コンデンサ、インピーダンス整合器および半導体加工装置 |
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CN112885605B (zh) * | 2020-11-27 | 2022-10-21 | 北京北方华创微电子装备有限公司 | 可变电容器及半导体工艺设备 |
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JP2020527824A (ja) * | 2017-06-23 | 2020-09-10 | 北京北方華創微電子装備有限公司Beijing Naura Microelectronics Equipment Co., Ltd. | 可変コンデンサ、インピーダンス整合器および半導体加工装置 |
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KR20170053670A (ko) | 2017-05-16 |
TW201611058A (zh) | 2016-03-16 |
CN107004507B (zh) | 2021-08-03 |
CN107004507A (zh) | 2017-08-01 |
KR102015544B1 (ko) | 2019-08-30 |
US20180233330A1 (en) | 2018-08-16 |
JP6820832B2 (ja) | 2021-01-27 |
US11011350B2 (en) | 2021-05-18 |
TWI579875B (zh) | 2017-04-21 |
EP3189538A1 (en) | 2017-07-12 |
WO2016034241A1 (en) | 2016-03-10 |
EP3189538B1 (en) | 2019-01-09 |
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