JP5700785B2 - トランジスタ - Google Patents
トランジスタ Download PDFInfo
- Publication number
- JP5700785B2 JP5700785B2 JP2010282198A JP2010282198A JP5700785B2 JP 5700785 B2 JP5700785 B2 JP 5700785B2 JP 2010282198 A JP2010282198 A JP 2010282198A JP 2010282198 A JP2010282198 A JP 2010282198A JP 5700785 B2 JP5700785 B2 JP 5700785B2
- Authority
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- Japan
- Prior art keywords
- layer
- semiconductor layer
- thin film
- region
- insulating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01L29/66—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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 potential barriers; including integrated passive circuit elements having potential barriers
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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 potential barriers; including integrated passive circuit elements having potential barriers
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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 potential barriers; including integrated passive circuit elements having potential barriers
- 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
- H01L27/124—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 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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Description
本実施の形態では、本発明の一形態であるトランジスタについて、図1乃至図3を参照して説明する。なお、薄膜トランジスタは、p型よりもn型の方が、キャリアの移動度が高い。また、同一の基板上に形成する薄膜トランジスタを全て同じ極性に統一すると、工程数を抑えることができ、好ましい。そのため、本実施の形態では、n型の薄膜トランジスタについて説明する。
本実施の形態では、実施の形態1と異なる構造の薄膜トランジスタについて、図4を用いて説明する。本実施の形態では、半導体層の形状が実施の形態1と異なる。
ここでは、図1及び図2に示す薄膜トランジスタの作製方法について、図5及び図6を用いて示す。
本実施の形態では、n型の薄膜トランジスタの作製方法について説明する。
本実施の形態では、表示部の画素200の一形態について、図7乃至図11を用いて説明する。
本実施の形態では、表示不良を低減できる画素構造について、図12を用いて説明する。
本実施の形態では、表示不良を低減できる配線構造について、図13を用いて説明する。
本発明の一態様の薄膜トランジスタを作製し、該薄膜トランジスタを画素部、さらには駆動回路に用いて表示機能を有する半導体装置(表示装置ともいう)を作製することができる。また、薄膜トランジスタを用いた駆動回路の一部または全体を、画素部と同じ基板上に一体形成し、システムオンパネルを形成することができる。
本明細書に開示する半導体装置は、電子ペーパーとして適用することができる。電子ペーパーは、情報を表示するものであればあらゆる分野の電子機器に用いることが可能である。例えば、電子ペーパーを用いて、電子書籍(電子ブック)、ポスター、デンジタルサイネージ、PID(Public Information Display)、電車などの乗り物の車内広告、クレジットカード等の各種カードにおける表示等に適用することができる。電子機器の一例を図14に示す。
本明細書に開示する半導体装置は、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)、コンピュータ用などのモニタ、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。
103 ゲート電極
105 ゲート絶縁層
111 半導体層
113 不純物半導体層
117 半導体層
117a 微結晶半導体領域
117b 非晶質半導体領域
121 不純物半導体層
129a 配線
129b 配線
131a 不純物半導体層
131b 不純物半導体層
133 半導体層
133a 微結晶半導体領域
133b 非晶質半導体領域
137 絶縁層
139 バックゲート電極
143 半導体層
143a 微結晶半導体領域
143b 非晶質半導体領域
127 導電層
200 画素
201 基板
205 ゲート絶縁層
203a 走査線
203b 容量配線
203c 第1の導電層
203d 第1の導電層
203e 第1の導電層
229a 信号線
229b ソース電極及びドレイン電極の他方
229c 第2の導電層
229e 信号線
230e 開口部
233 半導体層
237 絶縁層
239a バックゲート電極
239b 画素電極
239c 第3の導電層
239d バックゲート電極
239e 第3の導電層
240a 開口部
240b 開口部
240c 開口部
250 薄膜トランジスタ
251a 薄膜トランジスタ
251b 薄膜トランジスタ
2700 電子書籍
2701 筐体
2703 筐体
2705 表示部
2707 表示部
2721 電源
2723 操作キー
2725 スピーカ
9600 テレビジョン装置
9601 筐体
9603 表示部
9605 スタンド
9607 表示部
9609 操作キー
9610 リモコン操作機
9700 デジタルフォトフレーム
9701 筐体
9703 表示部
9301 上部筐体
9302 下部筐体
9303 表示部
9304 キーボード
Claims (2)
- ゲート電極と、
前記ゲート電極上のゲート絶縁層と、
前記ゲート絶縁層上の半導体層と、
前記半導体層上の配線と、を有し、
前記半導体層は、結晶を有する第1の領域と、前記第1の領域上の非晶質である第2の領域とを有し、
前記結晶は、2nm以上200nm以下の結晶粒径を有し、
前記第1の領域は、前記第2の領域と重なる第1の部分と、前記第2の領域と重ならない第2の部分とを有し、
前記第2の部分の厚さd1は前記第1の部分の厚さd2より薄く、且つ前記第2の部分の厚さd1が30nm以上であり、
前記第2の部分の上面は平坦であり、前記第1の部分の上面は凹凸状であり、
前記第1の部分は、前記ゲート電極と重ならない部分を有することを特徴とするトランジスタ。 - 第1のゲート電極と、
前記第1のゲート電極上の第1の絶縁層と、
前記第1の絶縁層上の半導体層と、
前記半導体層上の第2の絶縁層と、
前記第2の絶縁層上の第2のゲート電極と、
前記半導体層と電気的に接続する配線と、を有し、
前記半導体層は、結晶を有する第1の領域と、前記第1の領域上の非晶質である第2の領域とを有し、
前記結晶は、2nm以上200nm以下の結晶粒径を有し、
前記第1の領域は、前記第2の領域と重なる第1の部分と、前記第2の領域と重ならない第2の部分とを有し、
前記第2の部分の厚さd1は前記第1の部分の厚さd2より薄く、且つ前記第2の部分の厚さd1が30nm以上であり、
前記第2の部分の上面は平坦であり、前記第1の部分の上面は凹凸状であり、
前記第1の部分は、前記第1及び前記第2のゲート電極と重ならない部分を有することを特徴とするトランジスタ。
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US20090090915A1 (en) * | 2007-10-05 | 2009-04-09 | Semiconductor Energy Laboratory Co., Ltd. | Thin film transistor, display device having thin film transistor, and method for manufacturing the same |
JP5311955B2 (ja) * | 2007-11-01 | 2013-10-09 | 株式会社半導体エネルギー研究所 | 表示装置の作製方法 |
WO2009060922A1 (en) * | 2007-11-05 | 2009-05-14 | Semiconductor Energy Laboratory Co., Ltd. | Thin film transistor and display device having the thin film transistor |
KR101602252B1 (ko) * | 2008-06-27 | 2016-03-10 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 박막 트랜지스터, 반도체장치 및 전자기기 |
JP5562603B2 (ja) | 2008-09-30 | 2014-07-30 | 株式会社半導体エネルギー研究所 | 表示装置 |
JP5595004B2 (ja) | 2008-10-21 | 2014-09-24 | 株式会社半導体エネルギー研究所 | 表示装置 |
JP5595003B2 (ja) | 2008-10-23 | 2014-09-24 | 株式会社半導体エネルギー研究所 | 表示装置 |
US8530897B2 (en) * | 2008-12-11 | 2013-09-10 | Semiconductor Energy Laboratory Co., Ltd. | Display device including an inverter circuit having a microcrystalline layer |
US8395156B2 (en) * | 2009-11-24 | 2013-03-12 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
-
2010
- 2010-12-16 US US12/970,460 patent/US8598586B2/en not_active Expired - Fee Related
- 2010-12-17 JP JP2010282198A patent/JP5700785B2/ja not_active Expired - Fee Related
- 2010-12-17 TW TW099144522A patent/TWI462292B/zh not_active IP Right Cessation
- 2010-12-17 KR KR1020100130080A patent/KR20110073294A/ko active Search and Examination
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US8598586B2 (en) | 2013-12-03 |
TW201140831A (en) | 2011-11-16 |
JP2011151380A (ja) | 2011-08-04 |
US20110147754A1 (en) | 2011-06-23 |
TWI462292B (zh) | 2014-11-21 |
KR20110073294A (ko) | 2011-06-29 |
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