JP2010239128A - 薄膜トランジスタ及びその作製方法 - Google Patents
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- JP2010239128A JP2010239128A JP2010051821A JP2010051821A JP2010239128A JP 2010239128 A JP2010239128 A JP 2010239128A JP 2010051821 A JP2010051821 A JP 2010051821A JP 2010051821 A JP2010051821 A JP 2010051821A JP 2010239128 A JP2010239128 A JP 2010239128A
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- 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
- H01L29/40—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
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
- H01L29/6675—Amorphous silicon or polysilicon transistors
- H01L29/66765—Lateral single gate single channel transistors with inverted structure, i.e. the channel layer is formed after the gate
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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
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- H01L29/78669—Amorphous silicon transistors with inverted-type structure, e.g. with bottom gate
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- 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
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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
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- 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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
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- 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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
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Abstract
【解決手段】少なくとも最表面が窒化シリコン層であるゲート絶縁層と、前記ゲート絶縁層上に設けられた半導体層と、前記半導体層上にバッファ層を有し、該半導体層中のゲート絶縁層との界面近傍における窒素の濃度は、半導体層の他の部分及びバッファ層よりも低い薄膜トランジスタを作製する。このような薄膜トランジスタは、半導体層の形成前にゲート絶縁層を大気雰囲気に曝露し、プラズマ処理を行うことで作製することができる。
【選択図】図6
Description
本実施の形態は、本発明の一態様であるTFT及びその作製方法について説明する。
本実施の形態では、本発明の一態様であるTFTの作製方法であって、実施の形態1とは異なるものについて説明する。具体的には、厚さの異なる領域を有するレジストマスクを用いることにより、より少ない枚数のフォトマスクによりTFTを作製する。
本実施の形態は、表示パネルまたは発光パネルの一形態について、図面を参照して説明する。
実施の形態1乃至実施の形態3にて開示した発明は、さまざまな電子機器(遊技機も含む)に適用することができる。電子機器としては、例えば、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)、コンピュータ用のモニタ、電子ペーパー、デジタルカメラ、デジタルビデオカメラ、デジタルフォトフレーム、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯型ゲーム機、携帯情報端末、音響再生装置、パチンコ機などの大型ゲーム機などが挙げられる。
102 ゲート電極層
104 ゲート絶縁層
106 第1の半導体層
106A 第1の半導体膜
108 第2の半導体層
108A 第2の半導体膜
108B 第2の半導体層
110 ソース領域及びドレイン領域
110A 不純物半導体膜
110B 不純物半導体層
112 ソース電極及びドレイン電極層
112A 導電膜
114 絶縁層
116 開口部
118 画素電極層
120 レジストマスク
122 積層体
124 レジストマスク
131 第1の領域
132 第2の領域
133 結晶粒
134 微小結晶粒
141 処理室
142 ステージ
143 ガス供給部
144 シャワープレート
145 排気口
146 上部電極
147 下部電極
148 交流電源
149 温度制御部
150 ガス供給手段
151 排気手段
152 シリンダ
153 圧力調整弁
154 ストップバルブ
155 マスフローコントローラ
156 バタフライバルブ
157 コンダクタンスバルブ
158 ターボ分子ポンプ
159 ドライポンプ
160 クライオポンプ
161 プラズマCVD装置
170 予備処理
171 窒化シリコン膜形成
172 大気曝露
173 ガス置換
174 プラズマ処理
175 ガス置換
176 シリコン膜形成
177 ガス置換
178 バッファ膜形成
179 ガス置換
180 不純物半導体膜形成
181 排気
190 共通室
191 ロード/アンロード室
192 処理室
193 処理室
194 処理室
200 基板
202 ゲート電極層
204 ゲート絶縁層
206 第1の半導体層
206A 第1の半導体膜
206B 第1の半導体層
208 第2の半導体層
208A 第2の半導体膜
208B 第2の半導体層
210 ソース領域及びドレイン領域
210A 不純物半導体膜
210B 不純物半導体層
212 ソース電極及びドレイン電極層
212A 導電膜
212B 導電層
220 レジストマスク
224 レジストマスク
240 グレートーンマスク
241 基板
242 遮光部
243 回折格子部
245 ハーフトーンマスク
246 基板
247 半透光部
248 遮光部
300 画素部
302 走査線駆動回路
303 信号線駆動回路
304 シフトレジスタ
305 アナログスイッチ
306 シフトレジスタ
307 バッファ
311 基板
312 画素部
313 信号線駆動回路
314 走査線駆動回路
315 シール材
316 基板
317 FPC
318 液晶層
319 TFT
320 TFT
321 スペーサ
322 画素電極
323 液晶素子
324 配線
325 配線
326 接続端子
326 接続端子
327 対向電極
328 配線
329 異方性導電層
330 発光素子
331 充填材
400 筐体
401 筐体
402 表示部
403 表示部
404 蝶番
405 電源入力端子
406 操作キー
407 スピーカ
411 筐体
412 表示部
421 筐体
422 表示部
423 スタンド
431 筐体
432 表示部
433 操作ボタン
434 外部接続ポート
435 スピーカ
436 マイク
437 操作ボタン
451 筐体
452 筐体
453 表示部
454 スピーカ
455 マイクロフォン
456 操作キー
457 ポインティングデバイス
458 表面カメラ用レンズ
459 外部接続端子ジャック
460 イヤホン端子
461 キーボード
462 外部メモリスロット
463 裏面カメラ
464 ライト
Claims (6)
- 窒化シリコン層上に半導体層を形成する薄膜トランジスタの作製方法であって、
窒化シリコン層を形成し、
前記窒化シリコン層を大気雰囲気に曝露し、
前記窒化シリコン層に対してプラズマ処理を行い、
前記窒化シリコン層上に結晶粒を含む半導体層を形成することを特徴とする薄膜トランジスタの作製方法。 - 請求項1において、
前記プラズマ処理はアルゴンガスプラズマまたは水素ガスプラズマにより行うことを特徴とする薄膜トランジスタの作製方法。 - 請求項1または請求項2において、
前記窒化シリコン層はゲート絶縁層であることを特徴とする薄膜トランジスタの作製方法。 - ゲート電極層と、
前記ゲート電極層を覆って設けられ、少なくとも最表面が窒化シリコン層であるゲート絶縁層と、
前記ゲート絶縁層上に設けられた半導体層と、
前記半導体層上にバッファ層と、
前記バッファ層に接して設けられた不純物半導体層により形成されるソース領域及びドレイン領域と、を有し、
前記半導体層中のゲート絶縁層との界面近傍における窒素の濃度は、前記半導体層の他の部分及びバッファ層における窒素の濃度よりも低いことを特徴とする薄膜トランジスタ。 - 請求項4において、
前記半導体層中のゲート絶縁層との界面近傍は、界面から5nm以上50nm以下の領域まで存在していることを特徴とする薄膜トランジスタ。 - 請求項4または請求項5において、
前記半導体層中のゲート絶縁層との界面近傍における窒素の濃度は、1×1019/cm3未満であることを特徴とする薄膜トランジスタ。
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WO2017029576A1 (en) | 2015-08-19 | 2017-02-23 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method of semiconductor device |
CN113434351B (zh) * | 2021-07-02 | 2022-07-12 | 义乌清越光电科技有限公司 | 电子纸的自动检测系统 |
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