JP5512930B2 - 半導体装置の作製方法 - Google Patents
半導体装置の作製方法 Download PDFInfo
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- JP5512930B2 JP5512930B2 JP2008060846A JP2008060846A JP5512930B2 JP 5512930 B2 JP5512930 B2 JP 5512930B2 JP 2008060846 A JP2008060846 A JP 2008060846A JP 2008060846 A JP2008060846 A JP 2008060846A JP 5512930 B2 JP5512930 B2 JP 5512930B2
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- semiconductor device
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Images
Classifications
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78618—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
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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
- H01L21/70—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
- H01L21/76802—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 by forming openings in dielectrics
- H01L21/76804—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 by forming openings in dielectrics by forming tapered via holes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
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Description
本実施の形態では、ソース電極又はドレイン電極の膜厚のばらつき又は断線を防止する半導体装置の構成及び作製方法について説明する。
本実施の形態では、図1又は図5に示す半導体装置の具体的な作製工程について説明する。なお、本実施の形態において、図1(A)のAとBとを結ぶ破線での断面における作製工程を図6(A)〜(D)、図7(A)〜(C)を用いて、図1(A)のCとDとを結ぶ破線での断面における作製工程を図6(E)〜(H)、図7(D)〜(F)を用いて説明する。
本発明に係る半導体装置は、実施の形態1〜2に示した構成に限らず様々な形状をとることができる。本実施の形態では、半導体層を部分的にシリサイド化させた薄膜トランジスタの構成及び作製方法について説明する。図8に本実施の形態の半導体装置の構成を示す。図8(A)は上面図であり、図8(B)は図8(A)の破線ABでの断面図を示し、図8(C)は図8(A)の破線CDでの断面図を示す。
実施の形態1〜3で説明した半導体装置は、単結晶シリコン基板中に酸化シリコンでなる酸化膜を形成し、酸化膜上の単結晶半導体薄膜を活性層として用いることができる。本実施の形態では、SIMOXと呼ばれるSOI技術を用いた半導体装置について説明する。
本実施の形態では、単結晶シリコン基板上に酸化シリコンでなる酸化膜を形成し、酸化膜上に形成された単結晶半導体薄膜を活性層として用いる半導体装置について説明する。本実施の形態では、Smart−Cut法を用いて形成されるSOI基板を用いた半導体装置について説明する。
本実施の形態では、実施の形態1で説明した半導体装置を用い、エレクトロルミネッセンス素子(以下、「EL素子」ともいう。)を有する表示装置(EL表示装置)を作製する方法について説明する。なお、本実施の形態において用いることが可能な半導体装置は実施の形態1に示すものに限られず、実施の形態2〜5で説明した半導体装置を用いてもよい。
本実施の形態では、実施の形態1で作製した半導体装置を用いて、透過型液晶表示装置を作製する方法について説明する。もちろん、実施の形態2〜5で作製した半導体装置を用いることもできる。
本実施の形態では、実施の形態1〜5のいずれかで説明した薄膜トランジスタ、記憶素子およびアンテナを含む無線通信可能な半導体装置の作製方法について、図面を参照して説明する。
31 絶縁層
32 半導体層
33 ゲート絶縁層
34 導電層
36 絶縁層
203 絶縁層
204 導電層
205 薄膜トランジスタ
32a チャネル形成領域
32b 不純物領域
32c 不純物領域
Claims (5)
- 絶縁表面上に半導体層を形成し、
前記半導体層上に第1の絶縁層を形成し、
前記第1の絶縁層上にゲート電極を形成し、
前記半導体層にシリサイド領域を形成し、
前記ゲート電極上に第2の絶縁層を形成し、
前記第2の絶縁層上に段差を有するレジストを形成し、
前記レジストをマスクとして、前記第2の絶縁層をエッチングして、段差を有する開口部を形成し、
前記第2の絶縁層上に、前記開口部を介して、前記シリサイド領域と接し、かつ、前記半導体層と電気的に接続される導電層を形成することを特徴とする半導体装置の作製方法。 - 絶縁表面上に第1の絶縁層を形成し、
前記第1の絶縁層上に半導体層を形成し、
前記半導体層上に第2の絶縁層を形成し、
前記第2の絶縁層上にゲート電極を形成し、
前記半導体層にシリサイド領域を形成し、
前記ゲート電極上に第3の絶縁層を形成し、
前記第3の絶縁層上に段差を有するレジストを形成し、
前記レジストをマスクとして、前記第1の絶縁層、前記半導体層及び前記第3の絶縁層をエッチングして、段差を有する開口部を形成し、
前記第3の絶縁層上に、前記開口部を介して、前記シリサイド領域と接し、かつ、前記半導体層と電気的に接続される導電層を形成することを特徴とする半導体装置の作製方法。 - 請求項1又は2において、
前記開口部を、ドライエッチングを行うことにより形成することを特徴とする半導体装置の作製方法。 - 請求項1乃至3のいずれか一項において、
前記半導体層の端部に絶縁物を形成することを特徴とする半導体装置の作製方法。 - 請求項1乃至4のいずれか一項において、
前記シリサイド領域は、前記半導体層の上面から下面までをシリサイド化することにより形成することを特徴とする半導体装置の作製方法。
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US8581413B2 (en) | 2013-11-12 |
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US20080237876A1 (en) | 2008-10-02 |
US7969012B2 (en) | 2011-06-28 |
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US20110248345A1 (en) | 2011-10-13 |
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