JP5331407B2 - 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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- JP5331407B2 JP5331407B2 JP2008204717A JP2008204717A JP5331407B2 JP 5331407 B2 JP5331407 B2 JP 5331407B2 JP 2008204717 A JP2008204717 A JP 2008204717A JP 2008204717 A JP2008204717 A JP 2008204717A JP 5331407 B2 JP5331407 B2 JP 5331407B2
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/515—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using pulsed discharges
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/505—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using radio frequency discharges
- C23C16/509—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using radio frequency discharges using internal electrodes
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
- H01L27/1288—Multistep manufacturing methods employing particular masking sequences or specially adapted masks, e.g. half-tone mask
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- 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
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
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- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4908—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET for thin film semiconductor, e.g. gate of TFT
Description
本実施の形態では、液晶表示装置に用いられる薄膜トランジスタの作製工程について、図1乃至図6を用いて説明する。図1乃至図3は、薄膜トランジスタの作製工程を示す断面図であり、図4は、一画素における薄膜トランジスタ及び画素電極の接続領域の上面図である。また、図5は、微結晶シリコン膜の成膜方法を示すタイミングチャートである。また、図6は、周波数の異なる二以上の高周波電力を供給してグロー放電プラズマを生成できるプラズマCVD装置の一構成例を示す断面図である。
本形態は実施の形態1で示されるTFTを構成するゲート絶縁膜、微結晶半導体膜、n+層の成膜に適したマルチチャンバ方式のプラズマCVD装置の一例を示す。
本実施の形態では、実施の形態2に示した図10と異なるマルチチャンバ方式のCVD装置を用いる薄膜トランジスタの作製工程について、図11を用いて説明する。図10は、3つの反応室を備えた装置であるのに対し、図11は、4つの反応室を備えたマルチチャンバ方式のCVD装置の上面図である。
実施の形態1とは異なる薄膜トランジスタの作製方法について、図12乃至図16を用いて説明する。ここでは、上記実施の形態1よりフォトマスク数を削減することが可能なプロセスを用いて薄膜トランジスタを作製する工程について示す。
本実施の形態では、表示装置の一形態として、実施の形態1で示す薄膜トランジスタを有する液晶表示装置について、以下に示す。
本実施の形態では、表示装置の一形態である発光装置について、図13乃至図15、図31、及び図32を用いて説明する。発光装置としては、ここではエレクトロルミネッセンスを利用する発光素子を用いて示す。エレクトロルミネッセンスを利用する発光素子は、発光材料が有機化合物であるか、無機化合物であるかによって区別され、一般的に、前者は有機EL素子、後者は無機EL素子と呼ばれている。
本発明の表示装置の一形態である表示パネルの構成について、以下に示す。
本発明の表示装置の一形態に相当する液晶表示パネルの外観及び断面について、図37を用いて説明する。図37(A)は、第1の基板4001上に形成された微結晶半導体膜を有する薄膜トランジスタ4010及び液晶素子4013を、第2の基板4006との間にシール材4005によって封止した、パネルの上面図であり、図37(B)は、図37(A)のA−A’における断面図相当する。
次に、本発明の表示装置の一形態に相当する発光表示パネルの外観及び断面について、図38を用いて説明する。図38(A)は、第1の基板上に形成された微結晶半導体膜を用いた薄膜トランジスタ及び発光素子を、第2の基板との間にシール材によって封止した、パネルの上面図であり、図38(B)は、図38(A)のA−A’における断面図に相当する。
本発明により得られる表示装置等によって、アクティブマトリクス型表示装置モジュールに用いることができる。即ち、それらを表示部に組み込んだ電子機器全てに本発明を実施できる。
12:駆動回路部
23:微結晶半導体膜
50:基板
51:ゲート電極
52a、52b、52c:ゲート絶縁膜
53:微結晶半導体膜
54:バッファ層
55:一導電型を付与する不純物が添加された半導体膜
56:レジストマスク
59:多階調マスク
61:微結晶半導体膜
62:バッファ層
63:一導電型を付与する不純物が添加された半導体膜
65a、65b、65c:導電膜
66:レジストマスク
71a、71b、71c:ソース電極及びドレイン電極
72:ソース領域及びドレイン領域
73:バッファ層
74:薄膜トランジスタ
76:絶縁膜
77:画素電極
80:レジストマスク
81:レジストマスク
83:薄膜トランジスタ
84:薄膜トランジスタ
85a〜85c導電膜
87:バッファ層
86:レジストマスク
88:ソース領域及びドレイン領域
90:微結晶半導体膜
91:隔壁
92a、92b、92c:ソース電極及びドレイン電極
93:平坦化膜
94:画素電極
95:発光層
96:共通電極
97:保護膜
98:発光素子
100a 第1反応室
100b 第2反応室
100c 第3反応室
100d 第4反応室
101 第1の電極
101a 第1の電極
101b 第1の電極
102 第2の電極
103 高周波電力供給手段
104 第1の高周波電源
105 第2の高周波電源
106 第1の整合器
107 第2の整合器
108 ガス供給手段
108g ガス供給手段
108i ガス供給手段
108n ガス供給手段
108a ガス供給手段
108f ガス供給手段
109 排気制御手段
110 シリンダ
111 圧力調整弁
112 ストップバルブ
113 マスフローコントローラ
114 基板加熱ヒータ
115 ヒータコントローラ
116 絶縁材
117 バタフライバルブ
118 コンダクタンスバルブ
119 ターボ分子ポンプ
120 ドライポンプ
121 クライオポンプ
122 ロード/アンロード室
123 共通室
124 カセット
125 ゲートバルブ
126 搬送機構
127 スイッチ
200 真空排気
201 プレコート
202 基板搬入
203 下地前処理
204 成膜処理
205 基板搬出
206 クリーニング
207 破線
Claims (4)
- 絶縁表面を有する基板上にゲート電極を形成し、
前記ゲート電極上に絶縁膜を成膜し、
前記基板を真空チャンバー内に導入し、
前記真空チャンバー内に材料ガスを導入し、
前記真空チャンバー内にグロー放電プラズマを生成する電極に、波長10m以上の周波数を有する第1の高周波電力と、波長10m未満の周波数を有する第2の高周波電力とを重畳印加してグロー放電プラズマを生成する第1の成膜条件により微結晶半導体膜の下部を成膜し、
前記第1の成膜条件と、基板温度、電力、周波数、前記材料ガスの流量、または真空度の少なくとも1つの条件が異なる第2の成膜条件で前記真空チャンバーと同一チャンバー内で前記微結晶半導体膜の上部を堆積し、
前記微結晶半導体膜上にバッファ層を成膜し、
前記第1の成膜条件は、前記第1の高周波電力と、前記第1の高周波電力よりも電力の大きい前記第2の高周波電力とを重畳印加し、
前記第2の成膜条件は、前記第1の高周波電力よりも大きい第3の高周波電力と、前記第3の高周波電力よりも電力の小さい第4の高周波電力を印加し、
前記第3の高周波電力の周波数は前記第1の高周波電力と同じであり、
前記第4の高周波電力の周波数は前記第2の高周波電力と同じである半導体装置の作製方法。 - 絶縁表面を有する基板上にゲート電極を形成し、
前記ゲート電極上に絶縁膜を成膜し、
前記基板を真空チャンバー内に導入し、
前記真空チャンバー内に材料ガスを導入し、
前記真空チャンバー内にグロー放電プラズマを生成する電極に、3MHz〜30MHzの第1の高周波電力と、30MHz〜300MHzの第2の高周波電力とを重畳印加してグロー放電プラズマを生成する第1の成膜条件により微結晶半導体膜の下部を成膜し、
前記第1の成膜条件と、基板温度、電力、周波数、前記材料ガスの流量、または真空度の少なくとも1つの条件が異なる第2の成膜条件で前記真空チャンバーと同一チャンバー内で前記微結晶半導体膜の上部を堆積し、
前記微結晶半導体膜上にバッファ層を成膜し、
前記第1の成膜条件は、前記第1の高周波電力と、前記第1の高周波電力よりも電力の大きい前記第2の高周波電力とを重畳印加し、
前記第2の成膜条件は、前記第1の高周波電力よりも大きい第3の高周波電力と、前記第3の高周波電力よりも電力の小さい第4の高周波電力を印加し、
前記第3の高周波電力の周波数は前記第1の高周波電力と同じであり、
前記第4の高周波電力の周波数は前記第2の高周波電力と同じである半導体装置の作製方法。 - 絶縁表面を有する基板上にゲート電極を形成し、
前記ゲート電極上に絶縁膜を成膜し、
前記基板を真空チャンバー内に導入し、
前記真空チャンバー内に材料ガスを導入し、
前記真空チャンバー内にグロー放電プラズマを生成する電極に、波長10m以上の周波数を有する第1の高周波電力と、波長10m未満の周波数を有する第2の高周波電力とを重畳印加してグロー放電プラズマを生成する第1の成膜条件により微結晶半導体膜の下部を成膜し、
前記第1の成膜条件と、基板温度、電力、周波数、前記材料ガスの流量、または真空度の少なくとも1つの条件が異なる第2の成膜条件で前記真空チャンバーと同一チャンバー内で前記微結晶半導体膜の上部を堆積し、
前記微結晶半導体膜上にバッファ層を成膜し、
前記第1の成膜条件は、前記第1の高周波電力と前記第2の高周波電力とを重畳印加し、
前記第2の成膜条件は、重畳印加することなく、前記第1の高周波電力と同じ周波数の第3の高周波電力を印加する半導体装置の作製方法。 - 絶縁表面を有する基板上にゲート電極を形成し、
前記ゲート電極上に絶縁膜を成膜し、
前記基板を真空チャンバー内に導入し、
前記真空チャンバー内に材料ガスを導入し、
前記真空チャンバー内にグロー放電プラズマを生成する電極に、3MHz〜30MHzの第1の高周波電力と、30MHz〜300MHzの第2の高周波電力とを重畳印加してグロー放電プラズマを生成する第1の成膜条件により微結晶半導体膜の下部を成膜し、
前記第1の成膜条件と、基板温度、電力、周波数、前記材料ガスの流量、または真空度の少なくとも1つの条件が異なる第2の成膜条件で前記真空チャンバーと同一チャンバー内で前記微結晶半導体膜の上部を堆積し、
前記微結晶半導体膜上にバッファ層を成膜し、
前記第1の成膜条件は、前記第1の高周波電力と前記第2の高周波電力とを重畳印加し、
前記第2の成膜条件は、重畳印加することなく、前記第1の高周波電力と同じ周波数の第3の高周波電力を印加する半導体装置の作製方法。
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US20110059562A1 (en) | 2011-03-10 |
TWI447915B (zh) | 2014-08-01 |
KR101518792B1 (ko) | 2015-05-12 |
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