JP2013138191A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2013138191A JP2013138191A JP2012259580A JP2012259580A JP2013138191A JP 2013138191 A JP2013138191 A JP 2013138191A JP 2012259580 A JP2012259580 A JP 2012259580A JP 2012259580 A JP2012259580 A JP 2012259580A JP 2013138191 A JP2013138191 A JP 2013138191A
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- film
- conductive film
- insulating film
- oxide semiconductor
- transistor
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Abstract
【解決手段】酸化物半導体層の上下にゲート電極を有する第1のトランジスタと、当該第1のトランジスタに少なくとも一部を重畳して設けられた酸化物半導体層の上下にゲート電極を有する第2のトランジスタと、を有し、第1のトランジスタおよび第2のトランジスタの第2のゲート電極として機能する導電膜を共通化した半導体装置である。なお、第2のゲート電極は、第1のトランジスタおよび第2のトランジスタのVthを制御するだけではなく、第1のトランジスタおよび第2のトランジスタそれぞれの第1のゲート電極から印加される電界の干渉を低減する効果も奏する。
【選択図】図1
Description
本実施の形態では、本発明の一態様に係る半導体装置について、図1乃至図6を用いて説明する。
本実施の形態では、実施の形態1と異なる構造の半導体装置について図7乃至図15を用いて説明する。
本実施の形態では、実施の形態1および実施の形態2と異なる構造の半導体装置について図16を用いて説明する。
本実施の形態では、実施の形態1乃至実施の形態3の少なくともいずれかを適用した電子機器の例について説明する。
102 第1の絶縁膜
104a 第1の導電膜
104b 第7の導電膜
106a 第1の酸化物半導体膜
106b 第2の酸化物半導体膜
110a 第3の絶縁膜
110b 第5の絶縁膜
112a 第2の絶縁膜
112b 第6の絶縁膜
114 第4の導電膜
116a 第2の導電膜
116b 第5の導電膜
120a 第4の絶縁膜
120b 第7の絶縁膜
124 導電膜
126a 第3の導電膜
126b 第6の導電膜
130a 絶縁膜
201 基板
202 第1の絶縁膜
204a 第1の導電膜
204b 第9の導電膜
204c 第8の導電膜
206a 第1の酸化物半導体膜
206b 第2の酸化物半導体膜
206c 第2の酸化物半導体膜
210a 第3の絶縁膜
210b 第5の絶縁膜
212a 第2の絶縁膜
212b 第6の絶縁膜
212c 第6の絶縁膜
214 第5の導電膜
216a 第2の導電膜
216b 第6の導電膜
216c 第6の導電膜
220a 第4の絶縁膜
220b 第7の絶縁膜
220c 第7の絶縁膜
225 第8の絶縁膜
226 第8の絶縁膜
226a 第3の導電膜
226b 第7の導電膜
226c 第7の導電膜
234a 第4の導電膜
234b 第8の導電膜
244a 導電膜
250a 絶縁膜
254 導電膜
260 第10の導電膜
261 第9の導電膜
270a キャパシタ
270b キャパシタ
270c キャパシタ
271a トランジスタ
271b トランジスタ
271c トランジスタ
280 メモリセル
281 メモリセル
2100 基板
2102 絶縁膜
2104 ゲート電極
2106 酸化物半導体膜
2112 ゲート絶縁膜
2116 一対の電極
2118 保護絶縁膜
9300 筐体
9301 ボタン
9302 マイクロフォン
9303 表示部
9304 スピーカ
9305 カメラ
9320 筐体
9321 ボタン
9322 マイクロフォン
9323 表示部
9630 筐体
9631a 表示部
9631b 表示部
9633 留め具
9638 操作スイッチ
Claims (9)
- 第1のゲート電極、および前記第1のゲート電極と少なくとも一部が重畳する第2のゲート電極を有する酸化物半導体膜を用いた第1のトランジスタと、
前記第1のトランジスタに少なくとも一部を重畳して設けられた前記第2のゲート電極、および前記第2のゲート電極と少なくとも一部が重畳する第3のゲート電極を有する酸化物半導体膜を用いた第2のトランジスタと、を有することを特徴とする半導体装置。 - 請求項1において、
前記第1のトランジスタおよび前記第2のトランジスタを有する第1の構造に少なくとも一部が重畳して、前記第1の構造と同様の構造である第2の構造が設けられることを特徴とする半導体装置。 - 絶縁表面上に設けられた第1のトランジスタと、
前記第1のトランジスタと少なくとも一部が重畳して設けられた第2のトランジスタと、を有し、
前記第1のトランジスタは、第1の導電膜と、前記第1の導電膜上に設けられた第1の絶縁膜と、前記第1の絶縁膜上に設けられた第1の酸化物半導体膜と、前記第1の酸化物半導体膜と少なくとも一部を接して設けられた第2の導電膜および第3の導電膜と、前記第2の導電膜、前記第3の導電膜および前記第1の酸化物半導体膜上に設けられた第2の絶縁膜と、前記第2の絶縁膜上に設けられた第4の導電膜と、を有し、
前記第2のトランジスタは、前記第4の導電膜と、前記第4の導電膜上に設けられた第3の絶縁膜と、前記第3の絶縁膜上に設けられた第2の酸化物半導体膜と、前記第2の酸化物半導体膜と少なくとも一部を接して設けられた第5の導電膜および第6の導電膜と、前記第5の導電膜、前記第6の導電膜および前記第2の酸化物半導体膜上に設けられた第4の絶縁膜と、前記第4の絶縁膜上に設けられた第7の導電膜と、を有し、
前記第1の酸化物半導体膜は、少なくとも一部が前記第1の導電膜および前記第4の導電膜と重畳し、
前記第2の酸化物半導体膜は、少なくとも一部が前記第4の導電膜および前記第7の導電膜と重畳することを特徴とする半導体装置。 - 請求項3において、
前記第2のトランジスタの前記第7の導電膜および前記第4の絶縁膜上に、上面の平坦である第5の絶縁膜が設けられることを特徴とする半導体装置。 - 請求項3または請求項4において、
前記第1の導電膜の少なくとも一部が前記第1のトランジスタの第1のゲート電極として機能し、
前記第7の導電膜の少なくとも一部が前記第2のトランジスタの第1のゲート電極として機能し、
前記第4の導電膜の少なくとも一部が前記第1のトランジスタおよび前記第2のトランジスタの第2のゲート電極として機能することを特徴とする半導体装置。 - 絶縁表面上に設けられた第1の導電膜と、
前記第1の導電膜上に設けられた第1の絶縁膜と、
前記第1の絶縁膜上に設けられ、前記第1の導電膜と少なくとも一部が重畳する第1の酸化物半導体膜と、
前記第1の酸化物半導体膜上に設けられた第2の導電膜および第3の導電膜と、
前記第2の導電膜、前記第3の導電膜および前記第1の酸化物半導体膜上に設けられた第2の絶縁膜と、
前記第2の絶縁膜上に設けられ、前記第2の導電膜と少なくとも一部が重畳する第4の導電膜と、
前記第2の絶縁膜上に設けられ、前記第1の酸化物半導体膜と少なくとも一部が重畳する第5の導電膜と、
前記第2の絶縁膜、前記第4の導電膜および前記第5の導電膜上に設けられた第3の絶縁膜と、
前記第3の絶縁膜上に設けられ、前記第5の導電膜と少なくとも一部が重畳する第2の酸化物半導体膜と、
前記第2の酸化物半導体膜上に設けられた第6の導電膜および第7の導電膜と、
前記第6の導電膜、前記第7の導電膜および前記第2の酸化物半導体膜上に設けられた第4の絶縁膜と、
前記第4の絶縁膜上に設けられ、前記第6の導電膜と少なくとも一部が重畳する第8の導電膜と、
前記第4の絶縁膜上に設けられ、前記第2の酸化物半導体膜と少なくとも一部が重畳する第9の導電膜と、
前記第4の絶縁膜、前記第8の導電膜および前記第9の導電膜上に設けられた第5の絶縁膜と、
前記第5の絶縁膜上に設けられた第10の導電膜と、
を有し、
前記第2の絶縁膜、前記第3の絶縁膜、前記第2の酸化物半導体膜、前記第7の導電膜、前記第4の絶縁膜および前記第5の絶縁膜は、前記第3の導電膜に達する開口部を有し、
前記開口部を介して、前記第10の導電膜が前記第3の導電膜と接することを特徴とする半導体装置。 - 請求項6において、
前記第10の導電膜上に、上面の平坦である第6の絶縁膜が設けられることを特徴とする半導体装置。 - 絶縁表面上に設けられた第1の導電膜と、
前記第1の導電膜上に設けられた第1の絶縁膜と、
前記第1の絶縁膜上に設けられ、前記第1の導電膜と少なくとも一部が重畳する第1の酸化物半導体膜と、
前記第1の酸化物半導体膜上に設けられた第2の導電膜および第3の導電膜と、
前記第2の導電膜、前記第3の導電膜および前記第1の酸化物半導体膜上に設けられた第2の絶縁膜と、
前記第2の絶縁膜上に設けられ、前記第2の導電膜と少なくとも一部が重畳する第4の導電膜と、
前記第2の絶縁膜上に設けられ、前記第1の酸化物半導体膜と少なくとも一部が重畳する第5の導電膜と、
前記第2の絶縁膜、前記第4の導電膜および前記第5の導電膜上に設けられた第3の絶縁膜と、
前記第3の絶縁膜上に設けられ、前記第4の導電膜と少なくとも一部が重畳する第6の導電膜と、
前記第3の絶縁膜上に設けられた第7の導電膜と、
前記第3の絶縁膜、前記第6の導電膜および前記第7の導電膜上に設けられ、前記第5の導電膜と少なくとも一部が重畳する第2の酸化物半導体膜と、
前記第6の導電膜、前記第7の導電膜および前記第2の酸化物半導体膜上に設けられた第4の絶縁膜と、
前記第4の絶縁膜上に設けられ、前記第2の酸化物半導体膜と少なくとも一部が重畳する第8の導電膜と、
前記第8の導電膜上に設けられた第5の絶縁膜と、
前記第5の絶縁膜上に設けられた第9の導電膜と、
を有し、
前記第2の絶縁膜、前記第3の絶縁膜、前記第2の酸化物半導体膜、前記第7の導電膜、前記第4の絶縁膜および前記第5の絶縁膜は、前記第3の導電膜に達する開口部を有し、
前記開口部を介して、前記第9の導電膜が前記第3の導電膜と接することを特徴とする半導体装置。 - 請求項8において、
前記第9の導電膜上に、上面の平坦である第6の絶縁膜が設けられることを特徴とする半導体装置。
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Also Published As
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US20130140569A1 (en) | 2013-06-06 |
US20170033130A1 (en) | 2017-02-02 |
KR102062402B1 (ko) | 2020-01-03 |
KR20130061637A (ko) | 2013-06-11 |
JP6377228B2 (ja) | 2018-08-22 |
US8981367B2 (en) | 2015-03-17 |
KR102171235B1 (ko) | 2020-10-28 |
US9472680B2 (en) | 2016-10-18 |
JP2017224870A (ja) | 2017-12-21 |
US20150179806A1 (en) | 2015-06-25 |
KR20190143443A (ko) | 2019-12-30 |
US10043833B2 (en) | 2018-08-07 |
JP6222919B2 (ja) | 2017-11-01 |
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