TW439202B - Method for forming a self aligned contact in a semiconductor device - Google Patents
Method for forming a self aligned contact in a semiconductor device Download PDFInfo
- Publication number
- TW439202B TW439202B TW088105997A TW88105997A TW439202B TW 439202 B TW439202 B TW 439202B TW 088105997 A TW088105997 A TW 088105997A TW 88105997 A TW88105997 A TW 88105997A TW 439202 B TW439202 B TW 439202B
- Authority
- TW
- Taiwan
- Prior art keywords
- layer
- forming
- insulating layer
- contact window
- angstroms
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000004065 semiconductor Substances 0.000 title claims abstract description 27
- 239000000758 substrate Substances 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 10
- 230000002079 cooperative effect Effects 0.000 claims description 6
- 150000004767 nitrides Chemical class 0.000 claims 1
- 238000000059 patterning Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 8
- 239000011229 interlayer Substances 0.000 abstract 3
- 229920002120 photoresistant polymer Polymers 0.000 description 19
- 238000005530 etching Methods 0.000 description 11
- 238000002955 isolation Methods 0.000 description 8
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 2
- 229910021342 tungsten silicide Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76897—Formation of self-aligned vias or contact plugs, i.e. involving a lithographically uncritical step
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76829—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H01L21/76834—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers formation of thin insulating films on the sidewalls or on top of conductors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Electrodes Of Semiconductors (AREA)
- Semiconductor Memories (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
470 1 pif.doc/006 B7 五、發明說明(,) 本發明是有關於一半導體元件中之接觸墊以及此接觸 墊的形成方法,且特別是有關於一自行對準接觸墊以及形 成此自行對準接觸墊之方法。 半導體製程技術發展已經步入十兆位元動態隨機存取 記憶體之領域。近來,隨著半導體技術的發展,半導體製 程已傾向於較小設計準則之半導體元件,例如十億位元動 態隨機存取記憶體,並且達到當一接觸插塞對準下層半導 體層或是下層內連線層時,對準邊緣(margin)不易維持的 程度。因此,對於臨界尺寸低於0.18微米的十兆位元動 態隨機存取記憶體而言’採用一種可自行對準下層半導體 層或是下層內連線層,以形成接觸插塞的製造方法。 自行對準接觸窗(SAC)技術的優點在於可增加微影製 程的對準失誤邊緣,以及可減少接觸窗阻値。因此,SAC 技術越來越受重視。 第1圖所示,係爲習知一種SAC技術應用於具有複數個 閘電極以及接觸墊的半導體基底的剖面示意圖。第1圖中 所示之圖形係由下列方法所製造形成。於一半導體基底1 上形成一元件隔離區3,並定義出主動區以及非主動區。 元件隔離區3可以利用任何已熟知的合適方法所形成,例 如,淺溝渠隔離法或是區域氧化法。以傳統方法,例如, 熱氧化法,形成一層聞氧化層(未繪示)。於間氧化層上依 序堆疊形成一層閘電極導電層4a.與一層閘蓋絕緣層4b。 此閘蓋絕緣層4b與後續內層絕緣層6有蝕刻選擇性。以 習知微影製程形成圖案化閘4。 4 本纸張尺度適用中國國家標準(CNS)A4規格<210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) 裝 經濟部智慧財產局員工消費合作社印製 B7 §439202 470 1 pif.doc/006 五、發明說明(i) 本發明係以上述之問題爲目的’提出於半導體元件中形 成一可靠的SAC,且不需破壞聞間隙壁並可藉以防止於閘 電極與後續形成之SAC墊之間形成橋接。 根據本發明所述,SAC與聞間隙壁同日寸形成。更明確5兌’ 在閘電極以及蓋層堆疊形成於圖案化閘之後,沉積一層用 於形成閘間隙壁的絕緣層。於絕緣層上沉積形成一層內層 絕緣層。此內層絕緣層對於蓋層以及絕緣層具有蝕刻選擇 性。內層絕緣層可以是一氧化層’而蓋層以及絕緣層可以 是—含氮層。在形成閘間隙壁的同時,在內層絕緣層中開 啓 SAC。 爲能讓熟悉此技藝者,可藉由參考所附圖示’更加明瞭 本發明及其目的,所附圖式之詳細說明如下: 第1圖係顯示根據習知方法所形成之一種SAC的剖面示 意圖;以及 第2圖至第6圖係顯示根據本發明之新穎方法所形成之 SAC墊的剖面示意流程圖。 其中,各圖標號與構件名稱之關係如下: 1、 100 :半導體基底 2、 101 :主動區 3、 102 :元件隔離區 4 :圖案化閘 4a :閘電極導電層 4b :閘蓋絕緣層 5、106a :閘間隙壁 6 本紙張尺度適用中國國家標準(CNS>A4規格(210 X 297公釐) {請先閱讀背面之注意事項再填寫本頁) V —J t— n I ϋ ammav I ^ 經濟部智慧財產局員工消費合作杜印製 經濟部智慧財產局員工消費合作社印製 语 4 3 9 2 0 2 470 I pif.doc/006 A7 _ B7 五、發明說明(斗〉 6、106 :絕緣層 7a、7b :接觸窗開口 8a、8b、112a :接觸墊 104 :堆疊閘結構 104a :閘電極 l〇4b :閘蓋層 108 :內層絕緣層 110 :圖案化光阻層 111 *開口區 111a : SAC 開口 112 :多晶矽 實施例 本發明之較佳實施例將配合所附圖示描述如下。本發明 係關於一種形成一自行對準接觸窗之方法,且此方法可防 止閘蓋層與閘間隙壁受到攻擊,並且可防止蝕刻終止之現 象。在蝕刻內層絕緣層以形成SAC開口的同時,彤成閘間 隙壁。第2圖所示係爲一具有複數個堆疊的閘結構與一絕 緣層之半導體基底的一記憶胞陣列區的剖面圖。以一層元 件隔離層102定義基底上以及基底中之主動區101與非主 動區。其中,形成元件隔離層102之方法包括區域氧化法 (LOCOS)或是淺溝渠隔離法。此主動區101具有一長橢圓 形的輪廓。以傳統的方法,在半導體基底100上形成一堆 疊閘結構104。此堆疊閘結構104包括一層閘氧化層(未繪 示)、一閘電極l〇4a以及一閘蓋層104b。其中,係以習知 7 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閲讀背面之注意事項再填寫本頁) 、裝 J---—--訂·! ! A7 470 1 pif.doc/006 發明說明(彡 方法形成厚約爲50埃到1〇〇埃之間的閘氧化層。於閘氧 化層上沉積用於形成閘電極1〇4a之一層閘導電層,並且 在鬧導電層上沉積〜層閘蓋層。舉例而言,閘導電層可以 是厚度約爲1000埃的多晶矽層或是矽化鎢層,此外,其 他金屬砂化亦以可以取代上述之矽化鎢。閘蓋層104b係 選擇對於後續以氧化餍組成之內層絕緣層1〇8,具有蝕刻 選擇性之一金屬’而閘蓋層1〇4b之厚度約介於1〇〇〇埃至 2000埃之間。在此實施例中,閘蓋層i〇4b可爲具有厚度 約爲1500埃之一氮化矽層與厚度約爲5〇〇埃之—氧化層 的一雙層。 圖案化閘導電層與閘蓋層以形成閘電極結構1〇4。特別 的是’一光阻層旋塗在閘蓋層上,且以曝光與顯影步驟, 將此光阻層圖案化至預定的圖形。利用此圖案化光阻層, 飩刻聞室層以形成圖案化閘蓋層1 〇4b。於移除圖案化光阻 層之後,利用圖案化閘蓋層l〇4b,蝕刻閘導電層以形成閘 電極104a,並且因此形成了堆疊閘結構104。 利用堆疊閘結構104爲罩幕,於半導體基底1〇〇之主動 區101中植入低濃度摻雜離子。於半導體基底丨〇〇以及堆 疊閘結構104上沉積用於形成閘間隙壁之—層絕緣層 106。此絕緣層106之材質係爲對於後續內層絕緣層1〇8, 具有蝕刻選擇性。其中’絕緣層1〇6之厚度約爲300埃至 1000埃之間。較佳的絕緣層106可以是厚度約爲5〇〇埃的 氮化较層。 雖然在圖上未繪示出,但是圖案化光阻會暴露出中心部 (請先閱讀背面之注意事項再填寫本頁〕 !!!1 訂---------" 經濟部智慧財產局員工消費合作社印製 私紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) A7 B7 470 1 p if.doc/006 五、發明說明(6 ) 分以及週邊區域。利用此圖案化光阻,回蝕刻絕緣層106, 在中心部分以及週邊區域形成閘間隙壁。在記憶胞陣列區 中,圖案化光阻層所覆蓋之絕緣層106則不會被回蝕刻, 且此絕緣層106可作爲後續SAC蝕刻步驟中之蝕刻終止 層。因此,利用圖案化光阻層以及閘間隙壁爲罩幕,於半 導體基底100中植入高濃度摻雜離子。 請參照第3圖,於堆疊閘結構104之間的空間塡滿內層 絕緣層108,而絕緣層108之厚度約爲3000埃至9000埃。 較佳的是,內層絕緣層108可以是具有良好的縫隙塡補性 質的氧化層,且其厚度約爲5000埃。平坦化內層絕緣層 108,並且移除部分內層絕緣層108,使於閘蓋層i〇4b上 方所剩下之內層絕緣層108之厚度約爲1000埃(請參照第 3圖中,t所示之厚度)。 於平坦化之內層絕緣層108上方形成一層圖案化光阻層 110,此圖案化光阻層110裸露出部分之內層絕緣層108, 亦即爲預定區111,此預定區111對準SAC區域。如同第3 圖所示,圖案化光阻層110所形成之開口區111對準三個 接觸窗區、兩個儲存節點接觸窗區以及一個位元線接觸窗 區。由俯視方式可知,此開口區111具有一“T”型輪廓,此 .T型輪廓包括主動區101與部分的非主動區。換言之,由 圖案化光阻所暴露之開口區僅對準一個接觸窗區° 由於T型輪廓同時暴露出位元接觸窗以及儲存節點接觸 窗區,因此T型輪廓對於SAC蝕刻製程,提供寬闊的製程 窗口。因此,可以避免於習知出現的蝕刻終止現象,並且 9 本紙張尺度適用中國國家標準(CNS>A4規格(210 X 297公釐) (請先閲讀背面之注意事項再填寫本頁) 70平丨------訂------- 經濟部智慧財產局員工消費合作社印製 經濟部智慧財產局員工消費合作社印製 4701 pif.doc/006 A7 _B7__ 五、發明說明(1) 繼續蝕刻。 , Y. Kohyama 等人曾於文章“A Fully Printable, Self-aligned and Planarized Stacked Capacitor DRAM Cell Technology for 1Gbit DRAM and Beyond*^VLSI tech, digest of technical papers, pp, 17-18, 1997)中提出 一種形成SAC墊的方法,其利用圖案化接觸窗結合儲存節 點接觸窗以及位元線接觸窗。然而,於此發明中,閘SAC 圖案(此係指圖案化光阻層之區域)與主動區面積相當,並 且沿閘方向移動一半的間距(pitch)。因此,圖案化光阻 層之區域很小,以至於在SAC触刻時,產生較少量的聚合 物。而內層絕緣薄膜、閘間隙壁的含氮層與閘蓋層之間具 有較差的蝕刻選擇性,此係由於聚合物的形成與圖案化光 阻層之大小成正比。 然而,根據本發明所述,圖案化光阻層所佔有之面積大 於Y. Kohyama等人所建議之大小,因此可改良含氮層與 氧化層之間的選擇性。 以圖案化光阻層110爲罩幕,蝕刻內層絕緣層108與絕 緣層106,以同時形成SAC開口 Ilia與閘間隙壁106a。 具體而言,相對於絕緣層106,選擇性的蝕刻內層絕緣層 1〇8(也就是說,以絕緣層106作爲一個鈾刻終止點)。之 後,爲蝕刻絕緣層106,以同時形成SAC開口 111a與閘間 隙壁106a。在傳統方法中所出現的閘間隙壁遭受攻撃的現 象,將不會出現在本發明中。 在SAC開口形成之後,爲了降低接觸窗電阻,在SAC開 1 0 本紙張尺度適用中國國家標準<CNS)A4規格(210 X 297公笼) (請先閱讀背面之注意事項再填寫本頁) L · τ ----— I 訂·-------- A7 B7 11? d 3 9 ? 〇 2 470 1 pif,doc/006 五、發明說明u ) 口中,堆疊閘以及間隙壁所裸露出的基底上植入摻雜離 子。 將圖案化光阻層110移除之後,於內層絕緣層108上方 沉積一層導電層例如是多晶矽112,以塡滿SAC開口 111a。舉例而言,多晶矽之沉積厚度約爲3000埃到7000 埃之間。之後,進行一平坦化製程,以移除於內層絕緣層 上方的多晶矽層直到所剩下的多晶矽層存留在SAC開口 中,其結果請參照第5圖。此平坦化製程可以是化學機械 硏磨法或是回蝕刻法,而化學機械硏磨法係使用一般用於 硏磨多晶矽之硏漿。 以平坦化步驟同時移除內層絕緣層108以及多晶矽 112,直到裸露出閘蓋層104b之上表面,並因此將每一個 接觸墊112a作電性隔離。平坦化步驟可能爲化學機械硏 磨法,且係使用一般用於硏磨氧化物之硏漿。 假設開口區111僅暴露的,不是儲存節點就是位元線的 一個接觸窗區,則不必進行前述用於形成電性隔離的平坦 化製程。 熟悉此技藝者必可認同,基於本說明書所揭露之新觀點 廣泛應用於不同的情況。此外,離子植入步驟可以不同方 式修正之。因此,上述以及之後之修正與變化只是用於說 明本發明。這些例子可有助於顯示本發明觀點之領域,但 是,並非完全涵蓋本發明觀點之領域。 -----------|二 裝— f 丨訂 -----:!λ' \ , - (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<210 x297公釐)
Claims (1)
- A8 B8 C8 D8 i43 92 0 2 470 1 pif.doc/006 六、申請專利範園 1. 一種在半導體元件中形成自動對準接觸窗之方法, 其包括: (請先間讀背面之注項再域寫本頁) 於具有主動區以及非主動區的一半導體基底上方形成 複數個間隔堆疊的圖案,每一該間隔堆疊的圖案上包括一 第一導電層與一第一絕緣層; 於該堆疊的圖案上以及該半導體基底上方形成一第二 絕緣層; 形成一內層絕緣層以塡滿該堆疊的圖案之間; 於該內層絕緣層上方形成一圖案化罩幕層,且該圖案化 罩幕層暴露出對準該堆疊的圖案的該內層絕緣層的預定 區; 利用該圖案化罩幕層並蝕刻裸露的內層絕緣層,直至裸 露出介於該堆疊的圖案間的基底上表面,以形成複數個接 觸窗開口,且同時於該堆疊的圖案之側壁上形成間隙壁; 移除該圖案化罩幕層;以及 形成一第二導電層,塡滿該接觸窗開口。 經濟部中央標準局員工消費合作社印製 2. 如申請專利範圍第1項所述之在半導體元件中形成 自動對準接觸窗之方法,其中該第一與該第二絕緣層對於 該內層絕緣層具有蝕刻選擇性。 3. 如申請專利範圍第1或2項所述之在半導體元件中 形成自動對準接觸窗之方法,其中該第一與該第二絕緣層 是由氮化物所形成。 4. 如申請專利範圍第1或2項所述之在半導體元件中 形成自動對準接觸窗之方法,其中該第一絕緣層之厚度約 12 本紙張尺度適用中國固家標準(CNS ) A4規格(210X297公釐) A8 B8 C8 D8 470 1 pif.doc/006 六、申請專利範圍 介於1000埃至2000埃之間,且該第二絕緣層之厚度約介 於300埃至1000埃之間。 5. 如申請專利範圍第1項所述之在半導體元件中形成 自動對準接觸窗之方法,其中該內層絕緣層之厚度約介於 3000埃至9000埃之間,且該第二導電層之厚度約介於 3000埃至7000埃之間。 6. 如申請專利範圍第1項所述之在半導體元件中形成 自動對準接觸窗之方法,更包括進行一平坦化步驟平坦該 .內層絕緣層。· 7. 如申請專利範圍第1項所述之在半導體元件中形成 自動對準接觸窗之方法,其中至少一個該接觸窗開口暴露 至少兩個不同的接觸窗區域。 (請先聞讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印聚 13 本紙張尺度適用中國國家標準(CNS > A4規格(210X297公釐)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980022733A KR100284535B1 (ko) | 1998-06-17 | 1998-06-17 | 반도체장치의자기정렬콘택형성방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW439202B true TW439202B (en) | 2001-06-07 |
Family
ID=19539795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW088105997A TW439202B (en) | 1998-06-17 | 1999-04-15 | Method for forming a self aligned contact in a semiconductor device |
Country Status (8)
Country | Link |
---|---|
US (1) | US6337275B1 (zh) |
JP (2) | JP2000031085A (zh) |
KR (1) | KR100284535B1 (zh) |
CN (1) | CN1107340C (zh) |
DE (1) | DE19925657B4 (zh) |
FR (1) | FR2784229B1 (zh) |
GB (1) | GB2338596B (zh) |
TW (1) | TW439202B (zh) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6376344B1 (en) * | 1999-10-20 | 2002-04-23 | Texas Instruments Incorporated | Semiconductor device with fully self-aligned local interconnects, and method for fabricating the device |
KR100334572B1 (ko) * | 1999-08-26 | 2002-05-03 | 윤종용 | 반도체 장치의 자기정렬 콘택 형성 방법 |
KR100527577B1 (ko) * | 1999-12-24 | 2005-11-09 | 주식회사 하이닉스반도체 | 반도체소자의 제조방법 |
US6261924B1 (en) * | 2000-01-21 | 2001-07-17 | Infineon Technologies Ag | Maskless process for self-aligned contacts |
KR100388477B1 (ko) * | 2000-12-11 | 2003-06-25 | 주식회사 하이닉스반도체 | 반도체 장치의 콘택홀 형성 방법 |
KR100410980B1 (ko) * | 2001-04-24 | 2003-12-18 | 삼성전자주식회사 | 반도체 소자의 셀프얼라인 콘택패드 형성방법 |
KR100414563B1 (ko) * | 2001-06-29 | 2004-01-07 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
KR100442962B1 (ko) * | 2001-12-26 | 2004-08-04 | 주식회사 하이닉스반도체 | 반도체소자의 금속배선 콘택플러그 형성방법 |
KR100444302B1 (ko) * | 2001-12-29 | 2004-08-11 | 주식회사 하이닉스반도체 | 반도체 소자 제조방법 |
KR100869357B1 (ko) * | 2002-05-17 | 2008-11-19 | 주식회사 하이닉스반도체 | 공극 발생을 최소화할 수 있는 반도체소자 제조방법 |
US7105442B2 (en) * | 2002-05-22 | 2006-09-12 | Applied Materials, Inc. | Ashable layers for reducing critical dimensions of integrated circuit features |
US20040059726A1 (en) * | 2002-09-09 | 2004-03-25 | Jeff Hunter | Context-sensitive wordless search |
KR100587635B1 (ko) * | 2003-06-10 | 2006-06-07 | 주식회사 하이닉스반도체 | 반도체소자의 제조 방법 |
KR100670706B1 (ko) * | 2004-06-08 | 2007-01-17 | 주식회사 하이닉스반도체 | 반도체 소자의 콘택 플러그 형성 방법 |
KR20060099870A (ko) * | 2005-03-15 | 2006-09-20 | 삼성전자주식회사 | 캡핑막을 구비하는 박막 트랜지스터 및 그 제조 방법 |
US8124537B2 (en) * | 2008-02-12 | 2012-02-28 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method for etching integrated circuit structure |
US9064801B1 (en) | 2014-01-23 | 2015-06-23 | International Business Machines Corporation | Bi-layer gate cap for self-aligned contact formation |
KR102183038B1 (ko) | 2014-07-16 | 2020-11-26 | 삼성전자주식회사 | 반도체 장치의 제조 방법 |
US10622458B2 (en) | 2017-05-19 | 2020-04-14 | International Business Machines Corporation | Self-aligned contact for vertical field effect transistor |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02121336A (ja) * | 1988-10-31 | 1990-05-09 | Hitachi Ltd | 半導体装置及びその製造方法 |
KR950011643B1 (ko) * | 1992-04-17 | 1995-10-07 | 현대전자산업주식회사 | 반도체장치 및 그 제조방법 |
ATE168500T1 (de) * | 1992-04-29 | 1998-08-15 | Siemens Ag | Verfahren zur herstellung eines kontaktlochs zu einem dotierten bereich |
US5416349A (en) * | 1993-12-16 | 1995-05-16 | National Semiconductor Corporation | Increased-density flash EPROM that requires less area to form the metal bit line-to-drain contacts |
US5482894A (en) * | 1994-08-23 | 1996-01-09 | Texas Instruments Incorporated | Method of fabricating a self-aligned contact using organic dielectric materials |
US5723381A (en) * | 1995-09-27 | 1998-03-03 | Siemens Aktiengesellschaft | Formation of self-aligned overlapping bitline contacts with sacrificial polysilicon fill-in stud |
JP2953404B2 (ja) * | 1995-12-08 | 1999-09-27 | ソニー株式会社 | 半導体装置及びその製造方法 |
JP3599466B2 (ja) * | 1996-03-18 | 2004-12-08 | 株式会社日立製作所 | 半導体集積回路装置の製造方法 |
JP3215320B2 (ja) * | 1996-03-22 | 2001-10-02 | 株式会社東芝 | 半導体装置の製造方法 |
JP3795634B2 (ja) * | 1996-06-19 | 2006-07-12 | 株式会社東芝 | 半導体装置の製造方法 |
US5670404A (en) * | 1996-06-21 | 1997-09-23 | Industrial Technology Research Institute | Method for making self-aligned bit line contacts on a DRAM circuit having a planarized insulating layer |
US6136700A (en) * | 1996-12-20 | 2000-10-24 | Texas Instruments Incorporated | Method for enhancing the performance of a contact |
US5817562A (en) * | 1997-01-24 | 1998-10-06 | Taiwan Semiconductor Manufacturing Company, Ltd | Method for making improved polysilicon FET gate electrode structures and sidewall spacers for more reliable self-aligned contacts (SAC) |
US6069077A (en) * | 1997-07-07 | 2000-05-30 | Vanguard International Semiconductor Corporation | UV resist curing as an indirect means to increase SiN corner selectivity on self-aligned contact etching process |
KR100276387B1 (ko) * | 1998-01-08 | 2000-12-15 | 윤종용 | 반도체 장치의 자기정렬 콘택 형성 방법 |
US6074915A (en) * | 1998-08-17 | 2000-06-13 | Taiwan Semiconductor Manufacturing Company | Method of making embedded flash memory with salicide and sac structure |
US6037223A (en) * | 1998-10-23 | 2000-03-14 | Taiwan Semiconductor Manufacturing Company, Ltd. | Stack gate flash memory cell featuring symmetric self aligned contact structures |
-
1998
- 1998-06-17 KR KR1019980022733A patent/KR100284535B1/ko not_active IP Right Cessation
-
1999
- 1999-04-15 TW TW088105997A patent/TW439202B/zh not_active IP Right Cessation
- 1999-04-23 GB GB9909492A patent/GB2338596B/en not_active Expired - Lifetime
- 1999-06-04 FR FR9907076A patent/FR2784229B1/fr not_active Expired - Lifetime
- 1999-06-04 DE DE19925657A patent/DE19925657B4/de not_active Expired - Lifetime
- 1999-06-15 CN CN99109049A patent/CN1107340C/zh not_active Expired - Lifetime
- 1999-06-16 JP JP11170184A patent/JP2000031085A/ja not_active Withdrawn
- 1999-06-17 US US09/334,669 patent/US6337275B1/en not_active Expired - Lifetime
-
2007
- 2007-08-15 JP JP2007211918A patent/JP2007329501A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
KR20000002141A (ko) | 2000-01-15 |
JP2007329501A (ja) | 2007-12-20 |
CN1239815A (zh) | 1999-12-29 |
FR2784229B1 (fr) | 2004-03-12 |
KR100284535B1 (ko) | 2001-04-02 |
GB2338596B (en) | 2001-08-15 |
FR2784229A1 (fr) | 2000-04-07 |
DE19925657B4 (de) | 2006-07-06 |
GB2338596A (en) | 1999-12-22 |
US6337275B1 (en) | 2002-01-08 |
JP2000031085A (ja) | 2000-01-28 |
CN1107340C (zh) | 2003-04-30 |
GB9909492D0 (en) | 1999-06-23 |
DE19925657A1 (de) | 1999-12-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW439202B (en) | Method for forming a self aligned contact in a semiconductor device | |
US6204161B1 (en) | Self aligned contact pad in a semiconductor device and method for forming the same | |
US7510963B2 (en) | Semiconductor device having multilayer interconnection structure and manufacturing method thereof | |
US6177320B1 (en) | Method for forming a self aligned contact in a semiconductor device | |
TW522514B (en) | Method of forming metal contact in semiconductor device | |
TW413868B (en) | Semiconductor memory device having SOI (silicon-on-insulator) structure and method for fabricating thereof | |
KR100363710B1 (ko) | 셀프-얼라인 콘택 구조를 갖는 반도체 장치 및 그 제조방법 | |
JPH0917978A (ja) | 高集積dram素子及びその製造方法 | |
US6248654B1 (en) | Method for forming self-aligned contact | |
US20040007727A1 (en) | Semiconductor memory device and fabrication method thereof using damascene bitline process | |
KR100349986B1 (ko) | 메모리셀의비트라인용비아홀제조방법 | |
TW538534B (en) | Cylindrical storage capacitor of a memory cell and method for fabricating the same | |
TW425699B (en) | Semiconductor device and its fabrication method | |
JPH1050962A (ja) | 半導体装置の製造方法 | |
TW404013B (en) | Method of forming self aligned contacts in a semiconductor device | |
JP2000031088A (ja) | 半導体装置のコンタクトホ―ルを形成する方法 | |
US7473954B2 (en) | Bitline of semiconductor device having stud type capping layer and method for fabricating the same | |
KR20020061713A (ko) | 다중층의 스토리지 노드 콘택 플러그를 갖는 반도체메모리 소자 및 그 제조방법 | |
TW479328B (en) | Method for manufacturing a self-aligned stacked storage node DRAM cell | |
JPH0982916A (ja) | 半導体装置及びその製造方法 | |
KR100653983B1 (ko) | 스토리지 노드 콘택 형성방법 | |
JP3230512B2 (ja) | Cob構造のdram及びその製造方法 | |
TW382814B (en) | Method of making DRAM device having bitline top capacitor structure of linear bitline shape on substrate | |
TW396617B (en) | Manufacturing method of memory cell capacitor for dynamic random access memory in semiconductor device | |
KR20000061305A (ko) | 반도체 장치의 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent | ||
MK4A | Expiration of patent term of an invention patent |