TW200423249A - A system and method for controlling plasma with an adjustable coupling to ground circuit - Google Patents
A system and method for controlling plasma with an adjustable coupling to ground circuit Download PDFInfo
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- TW200423249A TW200423249A TW092136273A TW92136273A TW200423249A TW 200423249 A TW200423249 A TW 200423249A TW 092136273 A TW092136273 A TW 092136273A TW 92136273 A TW92136273 A TW 92136273A TW 200423249 A TW200423249 A TW 200423249A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008878 coupling Effects 0.000 title abstract 5
- 238000010168 coupling process Methods 0.000 title abstract 5
- 238000005859 coupling reaction Methods 0.000 title abstract 5
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000004065 semiconductor Substances 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 42
- 238000004132 cross linking Methods 0.000 claims 2
- 210000002381 plasma Anatomy 0.000 description 90
- 235000012431 wafers Nutrition 0.000 description 15
- 238000005530 etching Methods 0.000 description 12
- 239000010453 quartz Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 241001494479 Pecora Species 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67063—Apparatus for fluid treatment for etching
- H01L21/67069—Apparatus for fluid treatment for etching for drying etching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
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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
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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
- H01J37/32091—Radio frequency generated discharge the radio frequency energy being capacitively coupled to the plasma
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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
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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
- H01J37/32431—Constructional details of the reactor
- H01J37/32532—Electrodes
- H01J37/32577—Electrical connecting means
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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
- H01J37/32431—Constructional details of the reactor
- H01J37/32697—Electrostatic control
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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
- H01J37/32917—Plasma diagnostics
- H01J37/32935—Monitoring and controlling tubes by information coming from the object and/or discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Plasma Technology (AREA)
- Drying Of Semiconductors (AREA)
- Chemical Vapour Deposition (AREA)
Description
200423249 ⑴ 玖、發明說明 【發明所屬之技術領域】 本發明係有關半導體製造。更明確言之,本發明係有 關在半導體製造期間中之電漿處理。 【先前技術】 在半導體基礎之裝置(例如積體電路或平板顯示器) 之製造中,材料層可自晶圓或基體(例如半導體晶圓或玻 璃板)交替沉積及蝕刻。如本藝中所知,沉積層之蝕刻 可由各種技術達成,包含電漿加強鈾刻。在電漿加強蝕刻 中,晶圓或基體之實際蝕刻發生於電處理室內。在蝕刻程 序之期間中,由適當之蝕刻來源氣體形成電漿,以蝕刻晶 圓或基體之未由蔽罩保護之區域,留下所需之圖案。 有二種電漿使用於電漿加強之蝕刻中,即拘束之電漿 及不拘束之電漿。不拘束之電漿接觸電漿處理室壁,且可 由室壁再沉積原子於晶圓或基體上,污染晶圓或基體。電 漿處理室壁普通爲不能與晶圓或基體相容之材料製造。由 拘束電漿,甚少或無污染,因爲電漿由一些裝置停止,不 到達室壁。如此,拘束之電漿提供未由熟悉之未拘束電漿 所提供之淸潔程度。 在先前技藝系統中,可由建立各種電或磁性質之排斥 場,防止電漿到達室壁。例如,由置於室壁內之多個拘束 環,及使電漿剛可到達拘束環之內限界之前排出’拘束該 電漿。由於拘束環爲絕緣材料所製,此等充電至與電漿相 -4- (2) (2)200423249 當之電位。結果,自拘束環之前邊緣發射一排斥電場,此 防止電漿朝室壁伸出任何更遠。 參考圖 1,其中顯示一例解之先前技藝系統 100, 具有處理室,此產生電容交連之 RF電漿’作爲竇例且 非限制,例解之系統爲一 EXELAN系統,由 Lam硏究 公司製造。例解之系統 1 00包含一平行板電漿反應爐, 諸如反應爐 1 〇 〇。反應爐 1 〇 〇 包含一室,具有一內部 102,由連接至反應爐之室壁中之一出口之真空泵維持於 所需之真空壓力。蝕刻氣體可供應至電漿反應爐,由氣體 供應器 1 〇6供應氣體。例如,可由雙頻安排在反應爐中 產生中密度電漿,其中,RF能量自RF來源 108供應 通過一匹配網路 110至一電力電極 112。!^來源 108 經組態’以供應在 27MHz及 2MHz之 RF電力。電 極 U4爲接地電極。一晶圓或基體 116由電力電極 1 1 2支持’並由激勵蝕刻氣體至電漿狀態所產生之電漿 蝕刻。多個拘束環 1 2 0 a及 1 2 0 b拘束電發。亦可使用 其他電容交連之反應爐,諸如其中 RF電力供應至二電 極之反應爐,諸如共擁有之美專利 6,09〇,3〇4所述之雙 頻電漿蝕刻反應爐,其整個列作參考。 參考圖2,其中顯示電漿處理室1〇〇之內部1〇2 之斷面圖。內部102包含拘束環i2〇a及12〇b。雖僅 顯示二拘束環,但可設置任何數目之拘束環。在電漿處理 室1〇〇之內部102,顯示一電力電極]22,其上適合 接受一晶圓或基體124。電力電極124可由任何適當之 (3) (3)200423249 卡盤系統,例如靜電,機械,夾持,真空等實施,且由絕 緣體1 2 6,諸如石英焦點環環繞。在蝕刻期間中,R]F電 源 128可連通具有頻率約2MHz至約 27MHz之 RF 電力至電力電極122。在晶圓或基體124上方,設置一 接地電極130,此連接至拘束環i2〇a及120b。另一接 地電極 1 3 2推壓於絕緣環 1 2 6,並置於電力電極附近。 在操作中,RF 電源 128連通 RF 電力至電力電極 122,此電交連至接地電極 130。 【發明內容】 本發明提供一種控制室內之離子能量及電漿密度之系 統及方法,該室經組態以產生電漿,在例解實施例中,電 漿由電容交連放電產生。半導體室包含一電力電極,一電 源,多個接地電極,及連接至地之一可調整電路。電力電 極經組態,以接受一晶圓或基體。電源在操作上連接至電 力電極。多個接地電極經組態,以產生與電力電極之電交 連。接地電極之至少之一電連接至連接至地之可調整電路 。連接至地之可調整電路經組態,以修改接地電極之阻抗 。離子能量由連接至地之可調整電路控制。電漿密度由電 源控制。 連接至地之可調整電路包含一電容器或一電感器或其 組合。在一實施例,電容器爲可變電容器。在另一實施例 ,電容器可具有固定電容。亦可使用固定及可變電容器及 電感器之組合。在另一實施,使用諸如具有可變電感之電 冬 (4) 200423249 感器取代電容器。在又另一實施例,使用電容器及電感器 之組合作爲連接至地之可調整電路。
在操作中,例解之室經組態,以產生一拘束之電漿, 此由多個拘束環拘束。在例解之實施例中,有一第一接地 電極電連接至連接至地之一可調整電路。連接至地之可調 整連接提供具有第一阻抗之第一接地電極。第一接地電極 之第一阻抗取決於連接至地可調整電路中所用之電容器或 電感器。一第二接地電極及第三接地電極直接連接至地。 在例解之實施例中,第一接地電極之第一阻抗大於黃他電 極之阻抗。由於接地電極之阻抗之此等改變之結果,可控 制電漿之離子能量。在例解之實例中,具有較高阻抗之第 一接地電極轉移離子能量離開第一接地電極至其他接地電 極。
而且,提供用以控制電漿處理室中之電漿之一種方法 。該方法包含在電漿處理室中接收一氣體之第一步驟。電 力電極經組態,以接受一晶圓或基體,並接收來自電源之 電力。由電交連電力電極至一第一接地電極及一第二接地 電極,產生電漿。使用接地電極之阻抗,以控制離子能量 。使用電源控制電漿密度。 【實施方式】 在以下i羊細說明中,參考附圖,此構成本申請書之一 部份。附圖以例解顯示可實施本發明之特定實施例。應明 瞭亦可使用其他實施例’且可作結構改變,而不脫離本發 (5) (5)200423249 明之範圍。 參考圖 3,其中顯示電漿處理室之一第一實施例, 具有連接至地之可調整電路。圖 3爲處理室 200之斷 面圖,經組態以產生電容交連放電。電漿處理室 2 〇 〇亦 指一系統。在操作中,電漿處理室 200經組態,以接收 變換爲電漿之氣體。作爲實例且非限制,相當高之氣體流 率打進電漿處理室中。 電漿處理室 200 包含一電力電極 202,一電源 204,及一第一接地電極 206具有一連接至地之可調整電 路 208。電力電極 202適於接受一晶圓或基體。電力電 極 202 在操作上連接至電源 204,經組態以產生 RF 電力。作爲實例且非限制,第一接地電極具有一面積小於 電力電極 202之面積。而且,作爲實例且非限制,電源 204 爲 RF電源。 石英焦點環 210環繞電力電極 202。而且,一第二 接地電極環 212環繞第一接地電極 206。第二接地電極 212電連接至地,且並無連接至地之可調整電路。一第 三接地電極 2 1 4置於石英焦點環 2 1 0下方。第三接地 電極 2 1 4亦不包含耦合至地可調整電路。 電漿處理皺 200經組態,以產生拘束之電漿。拘束 環 216a及 2 16b經組態,以拘束電漿。電漿處理室壁 普通爲不與晶圓或基體相容之材料所製。拘束之電漿提供 甚少或無來自處理室壁之污染。精於本藝之人士應明瞭, 拘束之電漿提供一淸潔程度,此未由熟知之未拘束電漿提 -8- (6) (6)200423249 供。 連接至地之可調整電路 20 8 電連接至第一接地電極 2 〇 6。連接至地之可調整電路 2 0 8經組態,以修改第一 接地電極 206 之阻抗。拘束電漿之離子能量及電漿密度 由連接至地之可調整電路 2 0 8控制。連接至地之可調整 電路 208 包含一電容器 218。電容器 218 具有固定電 容普通小於 l〇〇〇pf。然而,精於本藝之人士應明瞭,電 容器 218亦可爲可變電容器。 連接至地之可調整電路 20 8 之電容器 218 及電阻 器 220產生一第一阻抗,此與第二接地電極 212及第 三接地電極 2 1 4 之阻抗不同。由於接地電極之阻抗之此 等改變之結果,可控制電漿之離子能量及電漿密度。在第 〜實施例,具有連接至地之可調整電路 20 8之第一接地 電極 206具有較之第二接地電極 212及第三接地電極 2 1 4 二者爲高之阻抗。第一接地電極之較高阻抗轉移離 子能量及電漿密度離開第一接地電極’俾離子能量及電漿 密度轉移至具有較低阻抗之接地電極。 在先前技藝中,使用例如 27MHz及 2MHzRF之電 源於獨立控制電發密度及離子能量。在此’處理室 200 許可由 RF電源獨立控制電漿密度及離子能量。連接至 地之可調整電路 2 0 8聯同接地電極許可由一個 R F電 源獨立控製離子能量°電獎密度主要由電源2 0 4所供應 之總電力控制。 例解之機械模型用以確認能控制離子能量及電漿密度 (7) (7)200423249 。還回參考圖 1及圖 2之先前技藝處理室,1200V(峰 至峰)及 27MHz RF電力供應至底電極 1 22,結果之 DC 偏壓接近 3 02V及電漿電極電壓爲 - 8 5 8 V。現參考 圖 3,例解之連接至地之可調整電路包含一電容器 218 具有一電容 2pF,及一電阻器 220具有電阻3 // Ω ° 在處理室 200,1100V 及 27MHz RF 電力供應至電力 電極 202,以達成與由處理室 1〇〇所產生之電漿相似之 電漿密度及電漿分佈。而且,由於在第一接地電極上之阻 抗之改變,DC 偏壓僅爲 -200V,及電發電極電壓爲 059V 〇此例解實例淸楚顯示在處理室 200內之電漿密度 及離子能量可由修改 RF電力及使用連接至地之可調整 電路控制。 參考圖 4,其中顯示另一處理室 2 5 0,經組態以控 制離子能量及電漿密度。一電力電極 252在操作上連接 至電源 2 5 4。一石英焦點環 2 5 6 環繞電力電極 2 5 2。 一電漿產生於處理室 2 5 0 內,並由拘束環 2 5 8 拘束。 第一接地電極 260具有一表面積大於第一電力電極 252 。第一接地電極 260電連接至一可變電容器262,此許 可可調整連接至地。作爲實例並非限制,可變電容器 262 具有電容範圍 5pF至 1 000pF。一第二接地極 264 爲一接地環,此環繞第一接地電極 260。第二接地電極 264在操作上連接至另一可變電容器 266。一第三接地 電極2 6 8置於石英焦點環256下面。 在操作中,處理室 25〇許可較之處理室 200爲高 -10- (8) (8)200423249 之離子能量控制程度。提高之控制由具有連接至地之二可 調整電路提供。第一接地電極260及第二接地電極264 具有電容用以修改其各別阻抗。結果,操作者可更有效控 制拘束電漿之’’頂部 ”。 參考圖 5,其中顯示又另一處理室 300,具有連接 至地之可調整電路。處理室 300 與圖 4 之處理室 25〇 有許多共同,諸如拘束環,一焦點環,一電力電極,及一 電源。二處理室間之不同在於接地電極。處理室3 〇 〇包 含一第一接地電極3 02在操作上連接至可變電容器3〇4 。一第二接地電極3 04爲一環,此環繞第一接地電極 302。一第三接地電極 308 置於電力電極鄰近。一可變 電容器 310電連接至第三接地電極。 在操作中,預期處理室3 0 0中之接地電極之組合許 可操作者控制拘束電漿頂部及束電漿側方上之離子能量。 精於本藝之人士應明瞭第二接地電極 3 0 6亦可適合具有 連接至地之可調整電路,以控制其各別阻抗。 參考圖 6,其中顯不一處理室 350,具有四接地電 極。第一接地電極 3 5 2接地,並具有面積小於電力電極 3 5 3。第二接地電極 3 5 4爲一環,此環繞第一接地電極 352。第二接地電極 354電連接至一可變電容器 356, 並具有一可變阻抗。第三接地電極 3 5 8爲另一環,此環 繞第二接地電極 3 54。第三接地電極3 5 8在操作上連接 至一可變電容器 3 6 0,且亦具有一可變阻抗。一第四接 地電極3 6 2置於電力電極 3 5 3附近,且在操作上連接 ►11 - 200423249 Ο) 至一可變電容器364。在操作中,此處理室350許可操 作者控制拘束電漿之側方上之離子能量。 參考圖 7’其中顯示處理室 400,具有雙頻電源 402。作爲實例且非限制,雙頻電源產生 27MHz及 2MHz之 RF電力。電力電極 404在操作上連接至雙 頻電源 402。一第一接地電極 4〇6電連接至連接至地之 可調整電路408。連接至地之可調整電路 408包含一可 變電容器 410,及一電感器 412,及一電阻器 414。連 接至地之可調整電路4 0 8經組態,俾作用如高通濾波器 或低通濾波器,並許可控制第一接地電極 4 0 6之阻抗 。一第二接地電極 4 1 6環繞第一接地電極4 0 6。第二接 地電極 4 1 6並不包含連接至地之可調整電路。一第三接 地電極 418鄰接電力電極 404。第三接地電極電連接至 電感器 420。 在操作中,可由使用一電感器 418取代電容器,控 制桌二接地電極。精於本藝之人士應明瞭電感器亦可爲一 可變電感器,經組態以產生多種不同之阻抗,此由工具操 作者控制。 而且,可由連接至地之可調整電路之可變電容器 4 1 〇控制第一接地電極 4 1 0之阻抗。而且,可使用連接 至地之可調整電路 408以濾去雙頻電源 402之27MHz RF電力或 2MHz RF電力之任一。 參考圖8,其中顯示由使用上述各種系統,控制一 處理室中之電漿之方法之流程圖。該方法在處理步驟 -12- (10) (10)200423249 4 5 2初始化,在此,建立電漿處理室之操作參數。操作 參數爲所執行之工作型式所特定。作爲實例且非限制,在 蝕刻處理,選擇氣體型式’並決定每一氣體之氣體流率。 然後輸入特定工作之操作壓力於工具中。而且,亦提供所 施加之 RF電力之量。又且,亦提供執行例解蝕刻操作 所需之時間。或且,上述系統亦適合工作於電漿協助之化 學蒸氣沉積。該方法然後進行至處理步驟 4 5 4,在此, 在處理方塊 1 5 2中所辨認之例解控制參數到達備妥狀態 ,且到達所需之設定點。 該方法然後進行至處理方塊 4 5 6,在此,RF電力連 通至電力電極。在例解上,以上系統指一單個電力電極, 然而,精於本藝之人士應明瞭具有本說明之優點,本專利 所述之系統及方法可應用於具有多個電力電極之處理室。 在例解方法之處理方塊 4 5 8,然後產生一拘束之電 漿。一旦產生該電漿,則決定應否修改離子能量及電漿密 度。在決定菱塊 4 6 0中作此決定。如決定修改拘束電漿 之離子能量,則該方法進行處理方塊 4 62,在此修改可 調整之連接電路。如應更改電漿密度,則該方法進行至處 理方塊 4 6 3,並修改電力,以控制電漿密度。可調整連 接電路由修接地電極之阻抗控制離子能量。電漿密度可由 電源控制。 如在決定菱塊 460中決定電漿之性質爲可接受,則 該方法然後進行至處理方塊 4 64,在此處理基體或晶圓 。普通精於本藝之人士應明瞭具有本說明之優點,連接至 -13- (11) 200423249 地之可調整電路可經組態,俾例解之拘束電漿具有所需之 離子能量及能漿密度。 雖以上說明包含許多不同之實施例,但應不解釋此等 爲限制本發明之範圍,而是僅提供例解本發明之一些現較 宜之實施例。故此,本發明之範圍應由後附申請專利及其 法律相等者,而非由所提供之例解實例決定。
【圖式簡單說明】 本發明之較宜實施例顯示於附圖中,其中: 圖 1爲先前系統,具有產生電容交連電漿之一處理 室。 圖 2爲圖1所示之電漿處理室之內部之斷面圖。 圖 3爲具有連接至地之可調整電路之電漿處理室之 第一實施例之斷面圖。
圖 4爲具有連接至地之可調整電路之電漿處理室之 第二實施例之斷面圖。 圖5爲具有連接至地之可調整電路之電漿處理室之 第三實施例之斷面圖。 圖6爲具有連接至地之可調整電路之電漿處理室之 第四實施例之斷面圖。 圖7爲具有連接至地之可調整電路之電發處理室之 第五實施例之斷面圖。 圖8爲用以控制處理室中之電漿之方法之流程圖。 •14- (12)200423249 主要元件對照表 1 00 系統 1 00,200,2 5 0 電漿處理室 1 02 內部 1 04 真空泵 1 06 氣體供應器 1 08 RF來源 110 匹配網路 112,122 電力電極 114 電極 116,124 晶圓或基體 120,2 16 拘束環 1 2 6,2 5 8 絕緣環 1 28 RF電源 1 3 052 0 6?302 接地電極 202,2 5 2,3 5 3 電力電極 204,254 電源 208,40 8 地電路 2 10,256 石英焦點環 2 12 接地電極環 2 18 電容器 220 電阻器 262,304 5 356,410 可變電容器 402 雙頻率電源 -15- 200423249 (13) 420,4 1 8 電感器
Claims (1)
- (1) (1)200423249 拾、申請專利範圍 1 . 一種經組態以產生電漿之半導體室,該半導體室 包含: 一電力電極,經組態以接受一晶圓或基體; 至少一電極,經組態以產生與電力電極之電交連,該 至少一電極具有可變阻抗;及 連接至地之可調整電路,電連接至該至少一電極,連 接至地之可調整電路經組態,以修改該至少一電極之可變 阻抗。 2. 如申請專利範圍第 1項所述電漿處理室,另包 含至少一拘束環,經組態以拘束該電漿。 3. 如申請專利範圍第 1項所述之電漿處理室,其 中,該連接至地之可調整電路包含至少一電容器。 4. 如申請專利範圍第 3 項所述之電漿處理室,其 中,該至少一電容器包含一可變電容器。 5. 如申請專利範圍第 1項所述之電漿處理室,其 中,該連接至地之可調整電路包含至少一電感器。 6. 如申請專利範圍第 4項所述之電漿處理室,其 中,該至少一電感器包含一可變電感器。 7. 如申請專利範圍第 1項所述之電漿處理室,其 中,該連接至地之可調整電路包含至少一電感器及一電容 器。 8. 一種經組態以產生電漿之半導體室,該半導體室 包含: -17- (2) (2)200423249 一電力電極,經組態以接受一晶圓或基體; 一第一電極,經組態以產生與電力電極之電交連,該 第一電極具有第一阻抗;及 及一第二電極,經組態以產生與電力電極之另一電交 連,第二電極具有一第二阻抗。 9. 如申請專利範圍第 8項所述之方法,其中,第 一阻抗與第二阻抗不同。 10. 如申請專利範圍第 9項所述之電漿處理室,另 包含至少一拘束環,經組態以拘束該電漿。 1 1 .如申請專利範圍第 1 0項所述之半導體室,另 包含連接至地之一第一可調整電路,電連接至第一電極, 該連接至地之可調整電路經組態,以決定第一阻抗。 1 2 .如申請專利範圍第 11 項所述之電漿處理室, 其中,該連接至地之可調整電路包含至少一電容器。 1 3 .如申請專利範圍第 1 2 項所述之電漿處理室, 其中,該至少一電容器包含一可變電容器。 1 4 .如申請專利範圍第 11項所述之電漿處理室, 其中,該連接至地之可調整電路包含至少一電感器。 1 5 .如申請專利範圍第 1 4項所述之電漿處理室, 其中,該至少一電感器包含一可變電感器。 1 6 .如申請專利範圍第 11項所述之電漿處理室, 其中,該連接至地之可調整電路包含至少一電感器及一電 容器。 1 7 . —種用以控制電漿處理室中之電漿之方法,包含 -18- (3) (3)200423249 使電力電極接受一晶圓或基體,電力電極電連接至一 電源; 由電交連電力電極至具有連接至地之可調整電路之至 少另一電極產生一電漿,電漿具有一離子能量及一電漿密 度;及 由該連接至地之可調整電路控制離子能量。 1 8 .如申請專利範圍第 1 7項所述之方法,其中’ 由修改連接至地之可調整電路之阻抗,執行離子能量之控 制。 1 9 .如申請專利範圍第 1 7 項所述之方法,另包含 由電源控制電漿密度。 2 0 .如申請專利範圍第 1 8項所述之方法’其中’ 連接至地之可調整電路包含一電容器。 2 1 .如申請專利範圍第 1 8項所述之方法’其中’ 連接至地之可調整電路包含一電感器。 22.如申請專利範圍第1 8項所述之方法’其中’ 連接至地之可調整電路包含一電容器及一電感器° -19-
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- 2003-12-17 CN CNB2003801061318A patent/CN100380606C/zh not_active Expired - Lifetime
- 2003-12-17 AU AU2003297165A patent/AU2003297165A1/en not_active Abandoned
- 2003-12-17 EP EP03814023.2A patent/EP1573795B1/en not_active Expired - Lifetime
- 2003-12-17 WO PCT/US2003/039994 patent/WO2004059716A1/en active Application Filing
- 2003-12-17 KR KR1020057011629A patent/KR101029948B1/ko not_active Expired - Lifetime
- 2003-12-19 TW TW092136273A patent/TWI327752B/zh not_active IP Right Cessation
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2005
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US8518211B2 (en) | 2013-08-27 |
CN100380606C (zh) | 2008-04-09 |
KR20050089976A (ko) | 2005-09-09 |
US20040118344A1 (en) | 2004-06-24 |
JP5129433B2 (ja) | 2013-01-30 |
EP1573795A4 (en) | 2007-07-18 |
EP1573795B1 (en) | 2017-02-15 |
TWI327752B (en) | 2010-07-21 |
WO2004059716A1 (en) | 2004-07-15 |
US9190302B2 (en) | 2015-11-17 |
US20130306240A1 (en) | 2013-11-21 |
EP1573795A1 (en) | 2005-09-14 |
US20060112878A1 (en) | 2006-06-01 |
CN1726584A (zh) | 2006-01-25 |
KR101029948B1 (ko) | 2011-04-19 |
AU2003297165A1 (en) | 2004-07-22 |
JP2006511059A (ja) | 2006-03-30 |
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