TW560004B - Semiconductor device and manufacturing method therefor - Google Patents

Semiconductor device and manufacturing method therefor Download PDF

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Publication number
TW560004B
TW560004B TW091121658A TW91121658A TW560004B TW 560004 B TW560004 B TW 560004B TW 091121658 A TW091121658 A TW 091121658A TW 91121658 A TW91121658 A TW 91121658A TW 560004 B TW560004 B TW 560004B
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Taiwan
Prior art keywords
polycrystalline silicon
thin film
silicon thin
film resistor
semiconductor device
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TW091121658A
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English (en)
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Nobuo Takei
Toshihiko Omi
Keisuke Uemura
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Seiko Instr Inc
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Publication of TW560004B publication Critical patent/TW560004B/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/04Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L28/00Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
    • H01L28/20Resistors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/04Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
    • H01L27/08Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
    • H01L27/0802Resistors only

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)

Description

560004 A7 B7 五、發明説明(1 ) 發明背景 1. 發明範圍 (請先閲讀背面之注意事項再填寫本頁) 本發明是關於一種用於電子裝備的半導體裝置,特別 是關於具有一電阻器的半導體裝置及其製造方法。 2. 相關技藝說明 傳統上,由多晶矽薄膜製成的電阻器之製造是藉由沈 積多晶矽薄膜於一矽基材,其表面被氧化或類似,以形成 一絕緣薄膜,在多晶矽中植入一雜質,諸如二氟化硼或磷 ,然後使用光阻或類似者當作罩幕,將多晶矽蝕刻於電阻 器中。圖3是平視圖,顯示一多晶矽薄膜電阻器。植入一 多晶矽薄膜電阻器1〇3的雜質數量之決定是藉由決定其長 度L 101與寬度W 102,然後使用多晶矽薄膜電阻器的長度 L 1 〇 1與寬度W 102及所欲的電阻値進行計算。 經濟部智慧財產局員工消費合作社印製 然而,近年來,半導體裝置需要高精確度。使用傳統 製造方法製造的多晶矽薄膜電阻器涉及電阻値的變化,其 防止內部裝有多晶矽薄膜電阻器的半導體裝置之性能的改 進,特別是需要電阻器之絕對値精確度的半導體裝置,諸 如類比至數位轉換器等。 發明槪述 鑑於上述問題,已做出本發明,且本發明之一目的是 提供一種能夠解決上述問題的半導體裝置,其包含一電阻 値變化減小而具有高精確度的多晶矽薄/(莫電阻器,及提供 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -4 - 560004 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明(2 ) 其製造方法。 爲了達成以上的目的,本發明使用一如下述的裝置。 本發明利用一種使用植入數量之雜質的裝置,雜質係 植入約爲雜質植入數量的多晶矽薄膜電阻器,其中在製造 多晶矽薄膜電阻器時,一片電阻値變成最小値。 由於本發明之嘗g式製造的結果,如圖1所示,可以確 認,多晶矽薄膜電阻器的片電阻値相關於某雜質植入數量 而取最小値。存在一相關於雜質植入數量之片電阻値的最 小値之事實意指即使雜質植入數量在片電阻的最小値附近 變化,片電阻値的變化也保持爲小。 在雜質植入數量預先決定的狀況,爲了獲得多晶矽薄 膜電阻器之所欲的電阻値,可以利用一關係,其由下列方 程式表示: R= p s X L/W 其中 R代表多晶矽薄膜電阻器之電阻値, P s代表多晶矽薄膜電阻器之片電阻値, L代表多晶矽薄膜電阻器之長度,而 W代表多晶矽薄膜電阻器之寬度。 當雜質植入數量決定時,多晶矽薄膜電阻器之片電阻 値也決定。於是,L/W-即,多晶矽薄膜電阻器之長度與寬 度-可以決定,以獲得多晶矽薄膜電阻器之所欲的電阻値 (請先閲讀背面之注意事項再填寫本頁} 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -5- 560004 A7 B7 五、發明説明(3 ) ^ 〇 藉由上述結構,可以獲得變化小的多晶砂薄膜電阻器 〇 圖式簡單說明 附圖中: 圖1顯示片電阻値對於多晶矽薄膜電阻器之雜質植入 數量的依賴性; 圖2A至2E是沿著圖3的線A-A’所作之示意剖視圖, 其以製造順序顯示多晶矽薄膜電阻器(本發明的實施例1); 而 圖3是顯示多晶矽薄膜電阻器的平視圖。 主要元件對照表 1砂基材 2二氧化矽薄膜 3多晶矽薄膜 4光阻 5多晶矽薄膜 6多晶矽薄膜電阻器 7硼磷矽酸鹽玻璃 8未摻雜的矽酸鹽玻璃 9電漿氮化物薄膜 11接觸部分 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁) ,裝_ 、11 經濟部智慧財產局員工消費合作杜印製 -6 - 560004 A7 B7 五、發明説明(4 )
101長度L
102寬度W (請先閲讀背面之注意事項再填寫本頁) 103多晶矽薄膜電阻器 較佳實施例詳細說明 此後,將說明本發明之一實施例。 將參考圖1,說明實施例1。 圖1顯示由本發明的發明人進行的嘗試製造之結果。 此顯示片電阻値對於一雜質植入數量的依賴性,此時多晶 矽薄膜的厚度是1000A,二氟化硼經由離子植入而在50千 電子伏特植入。當二氟化硼的劑量是3.0xl015CnT2時,片電 阻値取0.4千歐姆/平方當作最小値。於是,在二氟化硼經 由雜質植入而在50千電子伏特植入以形成多晶矽薄膜電阻 器的狀況,二氟化硼的雜質植入數量設定爲3.0xl015cnT2。 經濟部智慧財產局員工消費合作社印製 這時候,如果形成1千歐姆的多晶矽薄膜電阻器,因 爲1K = 0.4 K X L/W,L/W選擇爲俾使L與W的比例滿足5:2 。例如,L/W設定爲20/8或40/16。多晶矽薄膜電阻器係如 同此實施例而形成,以致於可以製造電阻値變化小的多晶 矽薄膜電阻器。 當半導體裝置製造於一矽基材上時,在很多狀況中, 複數相同的半導體裝置形成於相同的矽基材上。在二氟化 硼的雜質植入數量設定爲3.0xl015cnT2時,即使二氟化硼的 雜質植入數量可能在自2.0xl015cnT2至4.0xl015cnT2的範圍 內變化,也可以將多晶矽薄膜電阻器的片電阻値之變化抑 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) 560004 A7 B7 五、發明説明(5 ) 制爲約10%或更小。 (請先閲讀背面之注意事項再填寫本頁) 此後,將說明當1千歐姆的多晶矽薄膜電阻器是經由 二氟化硼的離子植入而製造時的製造方法。 將使用圖2A至2E,說明多晶矽薄膜電阻器的製造方 法,每一圖對應於一沿著圖3之線A-A7斤作的剖面。 如圖2A所示,一矽基材1的表面氧化8000A,以形成 二氧化矽薄膜2,然後,一多晶矽薄膜3沈積於其上約0.1 微米。 接著,在多晶矽薄膜3中,二氟化硼在50千電子伏特 的能量,以3.0xl015cnT2的植入數量,經由離子植入而植入 〇 如圖2 B所示,沈積於基材表面上的多晶矽薄膜3改變 成爲具有0.4千歐姆/平方之片電阻値的多晶矽薄膜(在二氟 化硼植入以後)5。 經濟部智慧財產局員工消費合作社印製 使用光微影術,一光阻4圖案化於一在多晶矽薄膜(在 二氟化硼植入以後)5上的電阻器中。圖2C是顯示在此階段 的狀態之剖視圖。這時候,執行圖案化,俾使多晶矽薄膜 電阻器6的長度L是40微米,而其寬度W是16微米。 圖2D顯示一狀態,其中鈾刻是在多晶矽薄膜(在二氟 化硼植入以後)5上執行,然後將抗蝕劑剝除。 其後,沈積厚度爲0·3微米之未摻雜的矽酸鹽玻璃8( 此後稱爲NSG薄膜)及厚度爲〇·5微米的硼磷矽酸鹽玻璃7( 此後稱爲BPSG薄膜),接著在900°C退火且形成一接觸部分 11,用於經由蝕刻引出一電極。當金屬用於線路時,個別 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -8- 560004 A7 B7 五、發明説明(6 ) 一~— 沈積厚度爲0.05微米、0.15微米及0.9微米的Ti、TiN與 A1 -Si-Cu。然後,執行圖案化以形成線路。沈積一厚度爲丄 微米的電漿氮化物薄膜9以充當保護薄膜,接著是形成_ 墊部分以經由蝕刻引出電極的步驟,藉以完成多晶矽薄膜 電阻器。圖2 E是在完成時沿著圖3的線A - A ’所作的剖視圖 〇 依據本發明,當製造多晶矽薄膜電阻器時,可以將雜 質植入數量的變化所造成的片電阻値變化抑制爲最小値。 多晶矽薄膜電阻器之片電阻値變化被抑制爲最小値,因而 可以提供以高精確度安裝電阻器的半導體裝置。 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐) -9-

Claims (1)

  1. 560004 A8 B8 C8 __________ D8 六、申請專利範圍 J 1·一種半導體裝置,包括一多晶矽薄膜電阻器,其係藉 由將雜質植入一沈積在半導體基材上的多晶矽薄膜而形成 其特徵爲多晶矽薄膜電阻器的雜質植入濃度數量設定 爲接近使片電阻値變成最小値的雜質植入數量。 2.—種半導體裝置之製造方法,半導體裝置包括一藉由 將雜質植入一沈積在半導體基材上的多晶矽薄膜而形成的 多晶矽薄膜電阻器, 方法包括將雜質植入多晶矽薄膜電阻器的步驟,其數 量設定爲接近使片電阻値變成最小値的雜質植入數量。 3·如申請專利範圍第1項之半導體裝置,包括一多晶砂 薄膜電阻器,其係藉由將雜質植入一沈積在半導體基材上 的多晶矽薄膜而形成, 其中多晶矽薄膜電阻器之電阻器長度與寬度是俾使獲 得所欲的電阻値。 4.如申請專利範圍第2項之半導體裝置之製造方法,其 中半導體裝置包括一藉由將雜質植入一沈積在半導體基材 上的多晶矽薄膜而形成的多晶矽薄膜電阻器, 又包括以電阻器的長度與寬度形成多晶砂薄膜電阻器 俾使獲得所欲的電阻値之步驟。 本紙張尺度適用中國國家標準(CNS ) A4規格(2l〇X297公釐) (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -10-
TW091121658A 2001-09-25 2002-09-20 Semiconductor device and manufacturing method therefor TW560004B (en)

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JP2001291311A JP2003100879A (ja) 2001-09-25 2001-09-25 半導体装置とその製造方法

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US (1) US6750531B2 (zh)
JP (1) JP2003100879A (zh)
KR (1) KR101200617B1 (zh)
CN (1) CN1419279A (zh)
SG (1) SG106096A1 (zh)
TW (1) TW560004B (zh)

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US20040235258A1 (en) * 2003-05-19 2004-11-25 Wu David Donggang Method of forming resistive structures
CN100409415C (zh) * 2005-12-06 2008-08-06 上海华虹Nec电子有限公司 一种在集成电路中使用α多晶硅的方法
KR101037813B1 (ko) * 2009-09-15 2011-05-30 한상호 수유 가리개

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JPS6289341A (ja) * 1985-10-15 1987-04-23 Mitsubishi Electric Corp マスタスライス方式大規模半導体集積回路装置の製造方法
US5494845A (en) * 1993-08-17 1996-02-27 Raytheon Company Method of fabrication of bilayer thin film resistor
US5495845A (en) * 1994-12-21 1996-03-05 Pyromid, Inc. Compact outdoor cooking unit
JPH10200066A (ja) * 1996-12-29 1998-07-31 Sony Corp 半導体装置の製造方法
US5994210A (en) * 1997-08-12 1999-11-30 National Semiconductor Corporation Method of improving silicide sheet resistance by implanting fluorine
JP2000058755A (ja) * 1998-06-02 2000-02-25 Seiko Instruments Inc 半導体装置とその製造方法
US6475400B2 (en) * 2001-02-26 2002-11-05 Trw Inc. Method for controlling the sheet resistance of thin film resistors

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US6750531B2 (en) 2004-06-15
CN1419279A (zh) 2003-05-21
KR101200617B1 (ko) 2012-11-12
KR20030027707A (ko) 2003-04-07
SG106096A1 (en) 2004-09-30
US20030057519A1 (en) 2003-03-27

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