JP6487645B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6487645B2 JP6487645B2 JP2014149998A JP2014149998A JP6487645B2 JP 6487645 B2 JP6487645 B2 JP 6487645B2 JP 2014149998 A JP2014149998 A JP 2014149998A JP 2014149998 A JP2014149998 A JP 2014149998A JP 6487645 B2 JP6487645 B2 JP 6487645B2
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- 239000004065 semiconductor Substances 0.000 title claims description 137
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- 238000005530 etching Methods 0.000 description 11
- 229910052738 indium Inorganic materials 0.000 description 11
- 239000011701 zinc Substances 0.000 description 9
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000003071 parasitic effect Effects 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 229910052733 gallium Inorganic materials 0.000 description 6
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052768 actinide Inorganic materials 0.000 description 1
- 150000001255 actinides Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 229910001195 gallium oxide Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- BNEMLSQAJOPTGK-UHFFFAOYSA-N zinc;dioxido(oxo)tin Chemical compound [Zn+2].[O-][Sn]([O-])=O BNEMLSQAJOPTGK-UHFFFAOYSA-N 0.000 description 1
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- 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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- H01L27/1225—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 crystalline structure of the active layer with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
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- H01L27/0705—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 a semiconductor body including a plurality of individual components in a non-repetitive configuration the components having an active region in common comprising components of the field effect type
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Description
第1のトランジスタ及び第2のトランジスタの並列接続により、酸化物半導体層の数は増える。
寄生容量はトランジスタの動作に影響を与える。
新規な半導体装置が要求されている。
第4の課題は、本明細書の内容から自ずと明らかになる複数の課題から選ばれた少なくとも一つの課題である。
例えば、オープニング(opening)は、ミッシングパート(missing part(欠けた部分))である。
半導体装置は、第1の導電層を有する。
第6の導電層を第3の絶縁層の上方に形成することにより、第6の導電層の形状の自由度を高くすることができる。
図1及び図2を用いて、半導体装置の例が説明される。
図1において、トランジスタTr1及びトランジスタTr2の並列接続が示されている。
図2を用いて、半導体装置の例が説明される。
導電層21を導電層71と電気的に接続することができる。
トップゲート型トランジスタを採用することができる。
例えば、オープニング65を形成しないことが可能である。
酸化物半導体層31が第1のチャネル形成領域及び第2のチャネル形成領域を有することによって、酸化物半導体層の数が減る。
例えば、オープニング75を形成しないことが可能である。
導電層91を絶縁層80の上方に形成することにより、導電層91の形状の自由度を高くすることができる。
導電層が2つの表面に接触するとき、2つの表面の間の距離を短くすることによって、導電層の断線の発生確率を低減することができる。
図2乃至図6を用いて、半導体装置の例が説明される。
図6のA−B断面図の例が図2である。
図6のC−D断面図の例が図5(A)である。
例えば、図5(A)のかわりに図5(B)を適用することができる。
例えば、図3(A)及び図6のオープニング45は、ミッシングパート(missing part(欠けた部分))である。
例えば、図7(A)及び図7(C)のように、導電層71を導電層71a及び導電層71bに分離することが可能である。
図7乃至図9において、導電層21は、トランジスタTr1の第1のゲート電極としての機能を有する領域を有する。
図10において、導電層42は、図1のトランジスタTr1のソース電極又はドレイン電極の他方としての機能を有する領域を有する。
オープニング65を形成するとき、導電層42の表面を除去することができる。
酸化物半導体層31及び絶縁層60の間に酸化物領域を形成することが可能である。
例えば、図12(A)において、酸化物半導体層31の上方に酸化物領域99a、酸化物領域99b、及び酸化物領域99cがある。
例えば、図12(B)において、酸化物半導体層31、導電層41、及び導電層42の上方に酸化物領域99bがある。
例えば、酸化物領域99aは、第1の酸化物層の領域であることができる。
例えば、1つの酸化物層が、酸化物領域99a、酸化物領域99b、及び酸化物領域99cを有することができる。
例えば、酸化物層は、酸化物絶縁層である。
酸化物領域99aは、導電層21及び導電層42の間に位置する。
酸化物領域99bは、第1のチャネル形成領域及び絶縁層60の間に位置する。
酸化物領域99cは、第2のチャネル形成領域及び絶縁層60の間に位置する。
例えば、半導体装置は、表示装置、記憶装置、プロセッサ、RFID等から選ぶことができる。
本実施の形態において、層及び材料が説明される。
例えば、層は、単膜又は積層膜である。
例えば、基板を、ガラス基板、プラスチック基板、半導体基板等から選ぶことができる。
酸化物半導体層が方向Xに沿ってc軸配向した結晶領域を有することによって、酸化物半導体層の密度が高くなる。
例えば、酸化物半導体層は、酸化物半導体膜A及び酸化物半導体膜Bを有する。
例えば、酸化物半導体層にかえてシリコン半導体層を用いてもよい。
Tr2 トランジスタ
T1 端子
T2 端子
T3 端子
T4 端子
10 基板
21 導電層
30 絶縁層
31 酸化物半導体層
41 導電層
41a 導電層
41b 導電層
42 導電層
43 導電層
44 導電層
60 絶縁層
71 導電層
71a 導電層
71b 導電層
72 導電層
73 導電層
80 絶縁層
91 導電層
92 導電層
120 導電層
140 導電層
190 導電層
220 導電層
270 導電層
290 導電層
35a オープニング
36a オープニング
45 オープニング
48a 領域
48b 領域
65 オープニング
65a オープニング
66a オープニング
75 オープニング
85 オープニング
85a オープニング
86a オープニング
99a 酸化物領域
99b 酸化物領域
99c 酸化物領域
Claims (1)
- 第1の導電層を有し、
前記第1の導電層の上方に第1の絶縁層を有し、
前記第1の絶縁層の上方に酸化物半導体層を有し、
前記酸化物半導体層の上方に第2の導電層を有し、
前記酸化物半導体層の上方に第3の導電層を有し、
前記第2の導電層の上方と前記第3の導電層の上方とに第2の絶縁層を有し、
前記第2の絶縁層の上方に第4の導電層を有し、
前記第2の絶縁層の上方に第5の導電層を有し、
前記第4の導電層の上方と前記第5の導電層の上方とに第3の絶縁層を有し、
前記第3の絶縁層の上方に第6の導電層を有し、
前記酸化物半導体層は、第1のトランジスタの第1のチャネル形成領域として機能する領域を有し、
前記酸化物半導体層は、第2のトランジスタの第2のチャネル形成領域として機能する領域を有し、
前記第1の導電層は、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する領域を有し、
前記第1の導電層は、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領域を有し、
前記第2の導電層は、前記第1のトランジスタのソース電極又はドレイン電極の一方として機能する領域を有し、
前記第2の導電層は、前記第2のトランジスタのソース電極又はドレイン電極の一方として機能する領域を有し、
前記第3の導電層は、前記第1のトランジスタのソース電極又はドレイン電極の他方として機能する領域を有し、
前記第3の導電層は、前記第2のトランジスタのソース電極又はドレイン電極の他方として機能する領域を有し、
前記第4の導電層は、前記第1のトランジスタの第3のゲート電極として機能する領域を有し、
前記第4の導電層は、前記第2のトランジスタの第4のゲート電極として機能する領域を有し、
前記第2の導電層は、第1のオープニングを有し、
前記第4の導電層は、第2のオープニングを有し、
前記第3の導電層は、前記第1のオープニング及び前記第2のオープニングと重なる領域を有し、
前記第3の導電層は、前記第5の導電層と接する第1の領域と、前記第5の導電層と接しない第2の領域と、を有し、
前記第1の領域の膜厚は、前記第2の領域の膜厚よりも小さく、
前記第6の導電層は、前記第5の導電層を介して、前記第3の導電層と電気的に接続されており、
前記第5の導電層は、前記第1のオープニング及び前記第2のオープニングと重なる領域を有することを特徴とする半導体装置。
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US10529740B2 (en) | 2020-01-07 |
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US10872907B2 (en) | 2020-12-22 |
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