JP5667414B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP5667414B2 JP5667414B2 JP2010238534A JP2010238534A JP5667414B2 JP 5667414 B2 JP5667414 B2 JP 5667414B2 JP 2010238534 A JP2010238534 A JP 2010238534A JP 2010238534 A JP2010238534 A JP 2010238534A JP 5667414 B2 JP5667414 B2 JP 5667414B2
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- Prior art keywords
- electrode
- oxide semiconductor
- film
- semiconductor film
- insulating film
- Prior art date
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Images
Classifications
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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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42384—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor
- H01L29/42392—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor fully surrounding the channel, e.g. gate-all-around
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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Description
本実施の形態では、本発明の一態様であるダイオードの構造の一例について、図1を用いて説明する。本実施の形態にて説明するダイオードは、電界効果トランジスタ、例えば薄膜トランジスタのソースまたはドレインにゲートが接続されたものである。
本実施の形態では、本発明の一態様であるダイオードの一例であって、実施の形態1とは異なる構造のものについて、図3を用いて説明する。本実施の形態にて説明するダイオードは、電界効果トランジスタ、例えば薄膜トランジスタのソースまたはドレインにゲートが接続されたものである。
本実施の形態では、本発明の一態様であるダイオードの一例であって、実施の形態1及び実施の形態2とは異なる構造のものについて、図5を用いて説明する。本実施の形態にて説明するダイオードは、電界効果トランジスタ、例えば薄膜トランジスタのソースまたはドレインにゲートが接続されたものである。
本実施の形態では、図1に示すダイオード接続された薄膜トランジスタの作製工程について、図7を用いて説明する。
本実施の形態の形態では、実施の形態4とは異なる形態の酸化物半導体膜を有するダイオード接続された薄膜トランジスタとその作製方法について、図7及び図8を用いて説明する。
本実施の形態では、図1に示すダイオード接続された薄膜トランジスタの作製工程であって、実施の形態4及び実施の形態5とは異なるものについて、図7を用いて説明する。
上記実施の形態にて説明したダイオードは、半導体装置に適用することができる。半導体装置として、例えば表示装置を挙げることができる。
実施の形態7で説明した保護回路を有する表示装置は、電子機器に適用することができる。
103 絶縁膜
105 第1の電極
106 第1の電極
107 酸化物半導体膜
109 第2の電極
111 ゲート絶縁膜
113 第3の電極
115 第3の電極
117 絶縁膜
119 コンタクトホール
121 コンタクトホール
123 コンタクトホール
125 配線
129 配線
131 配線
132 配線
133 薄膜トランジスタ
141 薄膜トランジスタ
143 薄膜トランジスタ
145 薄膜トランジスタ
151 酸化物半導体膜
153 破線部
155 非晶質領域
157 結晶粒
200 基板
201 画素部
202 入力端子
203 入力端子
204 保護回路
205 保護回路
206 保護回路
207 保護回路
208 配線
209 配線
211 保護ダイオード
211a n型薄膜トランジスタ
211b n型薄膜トランジスタ
212 保護ダイオード
213 保護ダイオード
214 保護ダイオード
215 配線
216 保護ダイオード
217 保護ダイオード
220 保護ダイオード
221 保護ダイオード
222 容量素子
223 容量素子
224 抵抗素子
225 配線
230 保護ダイオード
231 保護ダイオード
232 保護ダイオード
233 保護ダイオード
234 保護ダイオード
235 保護ダイオード
236 保護ダイオード
237 保護ダイオード
238 抵抗素子
239A 配線
239B 配線
240 抵抗素子
241 抵抗素子
242 保護ダイオード
243 配線
300 筐体
301 支持台
302 表示部
310 壁
311 筐体
312 表示部
313 表示部
314 操作キー
315 リモコン操作機
320 本体
321 筐体
322 表示部
323 キーボード
324 外部接続ポート
325 ポインティングデバイス
Claims (6)
- 第1の電極と、
前記第1の電極上方の酸化物半導体膜と、
前記酸化物半導体膜上方の第2の電極と、
前記第1の電極、前記酸化物半導体膜、及び前記第2の電極を覆う領域を有する絶縁膜と、
前記絶縁膜上方の、第3の電極及び第4の電極と、を有し、
前記第3の電極は、前記第1の電極、前記酸化物半導体膜、及び前記第2の電極を介して、前記第4の電極と対向する位置に設けられ、
前記第3の電極及び前記第4の電極は、前記第1の電極又は前記第2の電極と電気的に接続され、
前記酸化物半導体膜中、又は前記酸化物半導体膜と前記絶縁膜との界面に、ハロゲン元素を有し、
前記絶縁膜は、酸化物絶縁膜であり、
前記絶縁膜は、窒素を含む絶縁膜に覆われた領域を有することを特徴とする半導体装置。 - 第1の電極及び第2の電極と、
前記第1の電極及び前記第2の電極上方の酸化物半導体膜と、
前記酸化物半導体膜上方の第3の電極と、
前記第1の電極、前記第2の電極、前記酸化物半導体膜、及び前記第3の電極を覆う領域を有する絶縁膜と、
前記絶縁膜上方の、第4の電極及び第5の電極と、を有し、
前記第4の電極は、前記第1の電極、前記第2の電極、前記酸化物半導体膜、及び前記第3の電極を介して、前記第5の電極と対向する位置に設けられ、
前記第4の電極及び前記第5の電極は、前記第1の電極又は前記第2の電極と電気的に接続され、
前記酸化物半導体膜中、又は前記酸化物半導体膜と前記絶縁膜との界面に、ハロゲン元素を有し、
前記絶縁膜は、酸化物絶縁膜であり、
前記絶縁膜は、窒素を含む絶縁膜に覆われた領域を有することを特徴とする半導体装置。 - 第1の電極と、
前記第1の電極上方の酸化物半導体膜と、
前記酸化物半導体膜上方の第2の電極と、
前記第1の電極、前記酸化物半導体膜、及び前記第2の電極を覆う領域を有する絶縁膜と、
前記絶縁膜上方の、環状の形状を有する第3の電極と、を有し、
前記第3の電極は、前記第1の電極又は前記第2の電極と電気的に接続され、
前記酸化物半導体膜中、又は前記酸化物半導体膜と前記絶縁膜との界面に、ハロゲン元素を有し、
前記絶縁膜は、酸化物絶縁膜であり、
前記絶縁膜は、窒素を含む絶縁膜に覆われた領域を有することを特徴とする半導体装置。 - 請求項1乃至3のいずれか一項において、
前記酸化物半導体膜は、表面近傍に結晶を有することを特徴とする半導体装置。 - 請求項1乃至4のいずれか一項において、
前記酸化物半導体膜は、二次イオン質量分析法で検出される水素濃度が5×10 19 atoms/cm 3 以下の領域を有することを特徴とする半導体装置。 - 請求項1乃至5のいずれか一項において、
前記酸化物半導体膜は、キャリア濃度が5×1014atoms/cm3以下の領域を有することを特徴とする半導体装置。
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WO2011052409A1 (en) * | 2009-10-30 | 2011-05-05 | Semiconductor Energy Laboratory Co., Ltd. | Transistor |
KR101740684B1 (ko) | 2009-10-30 | 2017-05-26 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 파워 다이오드, 정류기 및 그것을 가지는 반도체 장치 |
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JP6347704B2 (ja) | 2013-09-18 | 2018-06-27 | 株式会社半導体エネルギー研究所 | 半導体装置 |
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US20110101355A1 (en) | 2011-05-05 |
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WO2011052413A1 (en) | 2011-05-05 |
KR20120102657A (ko) | 2012-09-18 |
JP2015084439A (ja) | 2015-04-30 |
JP5919367B2 (ja) | 2016-05-18 |
JP6345304B2 (ja) | 2018-06-20 |
US9105609B2 (en) | 2015-08-11 |
JP2016154254A (ja) | 2016-08-25 |
JP6138311B2 (ja) | 2017-05-31 |
KR101796909B1 (ko) | 2017-12-12 |
TWI496288B (zh) | 2015-08-11 |
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