JP5384038B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5384038B2 JP5384038B2 JP2008156353A JP2008156353A JP5384038B2 JP 5384038 B2 JP5384038 B2 JP 5384038B2 JP 2008156353 A JP2008156353 A JP 2008156353A JP 2008156353 A JP2008156353 A JP 2008156353A JP 5384038 B2 JP5384038 B2 JP 5384038B2
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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
- H01L29/788—Field effect transistors with field effect produced by an insulated gate with floating gate
- H01L29/7881—Programmable transistors with only two possible levels of programmation
-
- 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
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40114—Multistep manufacturing processes for data storage electrodes the electrodes comprising a conductor-insulator-conductor-insulator-semiconductor structure
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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
- H01L29/4234—Gate electrodes for transistors with charge trapping gate insulator
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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
- H01L29/43—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
- H01L29/51—Insulating materials associated therewith
- H01L29/511—Insulating materials associated therewith with a compositional variation, e.g. multilayer structures
- H01L29/513—Insulating materials associated therewith with a compositional variation, e.g. multilayer structures the variation being perpendicular to the channel plane
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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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66825—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a floating gate
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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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
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78618—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
- H01L29/78621—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure with LDD structure or an extension or an offset region or characterised by the doping profile
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- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
- Recrystallisation Techniques (AREA)
Description
本実施の形態を、図1、図2(A)〜図2(C)、図3(A)〜図3(D)、図4(A)〜図4(C)、図5を用いて説明する。
本実施の形態では、無線交信可能な半導体装置において、本発明の記憶素子を用いた場合について、図6、図7(A)〜図7(B)を用いて説明する。
実施の形態2に基づいて作製された、無線交信可能な半導体装置200は、電磁波の送信と受信ができるという機能を活用して、様々な物品やシステムに用いることができる。物品とは、例えば、鍵(図8(A)参照)、紙幣、硬貨、有価証券類、無記名債券類、証書類(運転免許証や住民票等、図8(B)参照)、書籍類、容器類(シャーレ等、図8(C)参照)、包装用容器類(包装紙やボトル等、図8(E)(F)参照)、記録媒体(ディスクやビデオテープ等)、乗物類(自転車等)、装身具(鞄や眼鏡等、図8(D)参照)、食品類、衣類、生活用品類、電子機器(液晶表示装置、EL表示装置、テレビジョン装置、携帯端末等)等である。
本実施の形態では、実施の形態1の島状半導体膜102を、SOI構造を有する基板を用いて形成する方法について、図9(A)〜図9(B)、図10(A)〜図10(C)、図11(A)〜図11(C)、図12(A)〜図12(B)、図13(A)〜図13(C)、図14(A)〜図14(C)、図15(A)〜図15(B)、図16(A)〜図16(C)を用いて説明する。
102 島状半導体膜
103 チャネル形成領域
104 高濃度不純物領域
105 低濃度不純物領域
106 トンネル絶縁膜
107 フローティングゲート
108 ゲート絶縁膜
109 コントロールゲート
111 基板
112 下地膜
113 非晶質半導体膜
114 結晶性半導体膜
115 レーザ光
118 層間絶縁膜
119 配線
121 低濃度不純物領域
131 絶縁膜
132 絶縁膜
200 半導体装置
201 演算処理回路
202 記憶回路
203 アンテナ
204 電源回路
205 復調回路
206 変調回路
207 リーダ/ライタ
300 支持基板
301 LTSS層
302 接合層
303 バリア層
304 絶縁層
305 酸化シリコン層
306 半導体基板
307 分離層
502 TFT
503 TFT
504 TFT
506 記憶素子
507 記憶素子
508 記憶素子
1021 メモリセル
1023 メモリセルアレイ
1024 ビット線駆動回路
1025 カラムデコーダ
1026 読み出し回路
1027 セレクタ
1028 インターフェース
1029 ワード線駆動回路
1030 ロウデコーダ
1031 レベルシフタ
1032 TFT
1033 記憶素子
Claims (5)
- 絶縁表面上に、
チャネル形成領域と高濃度不純物領域を有する島状半導体膜と、
前記島状半導体膜上に、トンネル絶縁膜と、
前記トンネル絶縁膜上に、フローティングゲートと、
前記フローティングゲート上に、ゲート絶縁膜と、
前記ゲート絶縁膜上に、コントロールゲートと、
前記トンネル絶縁膜と前記フローティングゲートとの間に、第1の絶縁膜と、
を有し、
前記フローティングゲートの材料は、チタン、タンタル、タングステンのいずれか1つであり、
前記第1の絶縁膜は、前記フローティングゲートの材料の酸化膜で形成されており、前記フローティングゲートの材料が、前記トンネル絶縁膜に拡散するのを防ぐことを特徴とする半導体装置。 - 請求項1において、
前記フローティングゲートと前記ゲート絶縁膜との間に、第2の絶縁膜と、
を有し、
前記第2の絶縁膜は、前記フローティングゲートの材料の酸化膜で形成されており、前記フローティングゲートの材料が、前記ゲート絶縁膜に拡散するのを防ぐことを特徴とする半導体装置。 - 請求項1または請求項2において、
前記第1の絶縁膜は、酸化チタン、酸化タンタル、酸化タングステンのいずれか1つであることを特徴とする半導体装置。 - 請求項2において、
前記第2の絶縁膜は、酸化チタン、酸化タンタル、酸化タングステンのいずれか1つであることを特徴とする半導体装置。 - 請求項1乃至請求項4のいずれか1項において、
前記島状半導体膜は、単結晶半導体層により形成されていることを特徴とする半導体装置。
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