WO2022248985A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- WO2022248985A1 WO2022248985A1 PCT/IB2022/054652 IB2022054652W WO2022248985A1 WO 2022248985 A1 WO2022248985 A1 WO 2022248985A1 IB 2022054652 W IB2022054652 W IB 2022054652W WO 2022248985 A1 WO2022248985 A1 WO 2022248985A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- substrate
- layer
- transistor
- circuit
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 157
- 239000000758 substrate Substances 0.000 claims abstract description 170
- 230000015654 memory Effects 0.000 claims abstract description 137
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 35
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 35
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 230000006870 function Effects 0.000 claims description 87
- 230000002093 peripheral effect Effects 0.000 claims description 36
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 claims description 29
- 229910052710 silicon Inorganic materials 0.000 claims description 29
- 239000010703 silicon Substances 0.000 claims description 29
- 230000005291 magnetic effect Effects 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 409
- 238000010586 diagram Methods 0.000 description 34
- 238000003860 storage Methods 0.000 description 26
- 238000006243 chemical reaction Methods 0.000 description 24
- 230000005415 magnetization Effects 0.000 description 22
- 239000010949 copper Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 239000004020 conductor Substances 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 229910052814 silicon oxide Inorganic materials 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000003302 ferromagnetic material Substances 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000005669 field effect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910001868 water Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 241000724291 Tobacco streak virus Species 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 229910000449 hafnium oxide Inorganic materials 0.000 description 2
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical group [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- MDPILPRLPQYEEN-UHFFFAOYSA-N aluminium arsenide Chemical compound [As]#[Al] MDPILPRLPQYEEN-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical group [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 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
- 239000012212 insulator Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical group [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910021424 microcrystalline silicon Inorganic materials 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000003362 replicative effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical group [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
-
- 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
- H01L27/04—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
- H01L27/10—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 repetitive configuration
-
- 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
- H01L27/04—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
- H01L27/10—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 repetitive configuration
- H01L27/105—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 repetitive configuration including field-effect components
-
- 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
-
- 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
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
-
- 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
-
- 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
- H01L29/792—Field effect transistors with field effect produced by an insulated gate with charge trapping gate insulator, e.g. MNOS-memory transistors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B43/00—EEPROM devices comprising charge-trapping gate insulators
- H10B43/20—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels
- H10B43/23—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels
- H10B43/27—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels the channels comprising vertical portions, e.g. U-shaped channels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B61/00—Magnetic memory devices, e.g. magnetoresistive RAM [MRAM] devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B99/00—Subject matter not provided for in other groups of this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
Definitions
- a semiconductor device is a device that utilizes semiconductor characteristics, and refers to circuits including semiconductor elements (transistors, diodes, photodiodes, etc.), devices having such circuits, and the like. It also refers to all devices that can function by utilizing semiconductor characteristics. For example, an integrated circuit, a chip with an integrated circuit, or an electronic component containing a chip in a package is an example of a semiconductor device. Storage devices, display devices, light-emitting devices, lighting devices, electronic devices, and the like are themselves semiconductor devices and may include semiconductor devices.
- Metal oxides are attracting attention as semiconductors that can be applied to transistors. It has been reported that a transistor including a metal oxide semiconductor in a channel formation region (hereinafter sometimes referred to as an "oxide semiconductor transistor” or an "OS transistor”) has an extremely low off-state current (eg, a non-metallic transistor). Patent Documents 1 and 2). Various semiconductor devices using OS transistors have been manufactured (eg, Non-Patent Documents 3 and 4).
- Patent Document 1 discloses a configuration in which a plurality of memory cell array layers having OS transistors are stacked on a substrate provided with Si transistors.
- An OS transistor is suitable for an access transistor such as a memory cell because it can be stacked and has an extremely small off current.
- a structure in which element layers each including a plurality of transistors are stacked is preferable.
- TSV through silicon vias
- One embodiment of the present invention includes a first substrate, a first element layer provided in contact with the second substrate, and first through electrodes provided in the second substrate and the first element layer,
- One element layer has a first transistor, a first electrode, a second electrode and a third electrode, the first transistor has a semiconductor layer having a metal oxide in a channel forming region, and the first electrode
- the third electrode is electrically connected to the third electrode via the two electrodes, the third electrode is exposed on the surface of the first element layer, and the first through electrode is exposed on the surface of the second substrate.
- the second substrate and the first element layer are stacked vertically or substantially vertically with respect to the surface of the first substrate, and the first transistor is electrically connected to the first electrode.
- the semiconductor device is provided in a region overlapping with the through electrode.
- One embodiment of the present invention includes a first substrate, a first element layer provided in contact with the second substrate, and first through electrodes provided in the second substrate and the first element layer,
- One element layer has a first memory cell, a first electrode, a second electrode and a third electrode.
- the first memory cell has a first transistor and a capacitor.
- a semiconductor layer containing an oxide the first electrode is electrically connected to the third electrode through the second electrode; the third electrode is exposed on the surface of the first element layer;
- the first through-electrode is exposed on the surface of the second substrate and electrically connected to the first electrode, and the second substrate and the first element layer are arranged in a direction perpendicular to or substantially parallel to the surface of the first substrate.
- the semiconductor device is vertically stacked, and the first transistor and the capacitor are provided in a region overlapping with the first through electrode.
- One embodiment of the present invention includes a first substrate, a first element layer provided in contact with the second substrate, and first through electrodes provided in the second substrate and the first element layer,
- a device layer has a first memory cell, a first electrode, a second electrode and a third electrode, the first memory cell having a first transistor and a magnetic tunnel junction device, the first transistor forming a channel.
- a semiconductor layer having a metal oxide in a region is provided, the first electrode is electrically connected to a third electrode through the second electrode, and the third electrode is exposed on the surface of the first element layer.
- the first through electrode is exposed on the surface of the second substrate and electrically connected to the first electrode, and the second substrate and the first element layer are perpendicular to the surface of the first substrate.
- the first transistor and the magnetic tunnel junction element are provided in a region overlapping with the first through-electrode.
- the magnetic tunnel junction element is preferably a semiconductor device having a laminated structure of a free layer, an insulating layer, and a fixed layer.
- One embodiment of the present invention includes a first substrate, a first element layer provided in contact with the second substrate, and first through electrodes provided in the second substrate and the first element layer,
- the one element layer has a plurality of first memory cells, a first circuit, a first electrode, a second electrode and a third electrode, the first memory cells and the first circuit each having a first transistor and a first transistor.
- 1 transistor has a semiconductor layer having a metal oxide in a channel formation region, a first electrode is electrically connected to a third electrode through a second electrode, and the third electrode is connected to the first element layer.
- the first through electrode is exposed on the surface of the second substrate and electrically connected to the first electrode, and the second substrate and the first element layer are connected to the first substrate.
- the first transistor is a semiconductor device provided in a region overlapping with the first through-electrode.
- the plurality of first memory cells are electrically connected to one of the plurality of bit lines, and the first circuit has a function of selecting one of the plurality of bit lines;
- a semiconductor device having a function of amplifying and outputting the potential of the bit line is preferable.
- a semiconductor device is preferable in which the first memory cell is electrically connected to a word line, and the first circuit has a function of amplifying a signal applied to the word line.
- the first substrate is preferably a semiconductor device provided with a first peripheral circuit having a function of driving a first transistor.
- a semiconductor device is preferable in which the second electrode is an electrode provided in the same layer as the electrode connected to the first transistor.
- the second substrate is preferably a semiconductor device that is a silicon substrate.
- the semiconductor device preferably contains In, Ga, and Zn as the metal oxide.
- One embodiment of the present invention can provide a semiconductor device or the like with a novel structure.
- a semiconductor device or the like that functions as a memory device with extremely low off-state current and has a novel structure and whose manufacturing cost can be reduced can be provided.
- one embodiment of the present invention can provide a semiconductor device or the like which functions as a memory device with extremely low off-state current and which has a novel structure and is excellent in low power consumption.
- a semiconductor device or the like that functions as a memory device with extremely low off-state current and has a novel structure that can be miniaturized can be provided.
- a semiconductor device or the like which functions as a memory device with extremely low off-state current and has a novel structure in which variation in electrical characteristics of a transistor is small and reliability is high is provided. can.
- 1A to 1C are diagrams showing configuration examples of a semiconductor device.
- 2A and 2B are diagrams showing configuration examples of a semiconductor device.
- 3A and 3B are diagrams showing configuration examples of a semiconductor device.
- 4A to 4C are diagrams showing configuration examples of a semiconductor device.
- 5A to 5C are diagrams showing configuration examples of the semiconductor device.
- 6A and 6B are diagrams showing configuration examples of a semiconductor device.
- FIG. 7 is a diagram showing a configuration example of a semiconductor device.
- FIG. 8 is a diagram showing a configuration example of a semiconductor device.
- FIG. 9 is a diagram showing a configuration example of a semiconductor device.
- 10A and 10B are diagrams showing configuration examples of a semiconductor device.
- 11A and 11B are diagrams showing configuration examples of a semiconductor device.
- FIG. 12A to 12C are diagrams illustrating configuration examples of semiconductor devices.
- FIG. 13 is a diagram illustrating a configuration example of an imaging device.
- FIG. 14 is a diagram illustrating a configuration example of an imaging device.
- 15A and 15B are diagrams showing configuration examples of a semiconductor device.
- 16A and 16B are diagrams showing configuration examples of a semiconductor device.
- 17A and 17B are diagrams showing configuration examples of semiconductor devices.
- 18A to 18C are diagrams illustrating configuration examples of semiconductor devices.
- 19A and 19B are diagrams showing configuration examples of a semiconductor device.
- FIG. 20 is a block diagram illustrating a configuration example of a semiconductor device.
- FIG. 21 is a conceptual diagram showing a configuration example of a semiconductor device.
- 22A and 22B are schematic diagrams illustrating an example of an electronic component.
- FIG. 23 is a diagram illustrating an example of an electronic device;
- the ordinal numbers “first”, “second”, and “third” are added to avoid confusion of constituent elements. Therefore, the number of components is not limited. Also, the order of the components is not limited. Also, for example, the component referred to as “first” in one of the embodiments of this specification etc. is the component referred to as “second” in another embodiment or the scope of claims It is possible. Further, for example, the component referred to as “first” in one of the embodiments of this specification etc. may be omitted in other embodiments or the scope of claims.
- the power supply potential VDD may be abbreviated as potential VDD, VDD, or the like. This also applies to other components (eg, signals, voltages, circuits, elements, electrodes, wiring, etc.).
- an identification code such as "_1”, “_2”, “[n]”, or “[m,n]” is used as the code. may be described with the sign of .
- the second wiring GL is described as wiring GL[2].
- a semiconductor device is a device that utilizes semiconductor characteristics, and includes a circuit including a semiconductor element (transistor, diode, photodiode, etc.) and a device having the same circuit.
- a semiconductor device using a transistor with extremely low off-state current functions as a memory device.
- a semiconductor device 10 of one embodiment of the present invention includes a plurality of circuit units 30_1 to 30_N (N is a natural number) over a substrate 25 as illustrated in FIG. 1A.
- the circuit units 30_1 to 30_N may be called a circuit unit layer 30B.
- 1B and 1C are schematic cross-sectional views illustrating the circuit unit 30 applicable to the circuit units 30_1 to 30_N.
- the substrate 25 is provided with the peripheral circuit 20 for driving the circuit unit.
- the substrate 25 on which the peripheral circuit 20 is provided is described as being a silicon substrate, the present embodiment is not limited to this.
- the silicon substrate refers to a substrate using silicon as a semiconductor material, for example, a single crystal silicon substrate.
- a material including Ge (germanium), SiGe (silicon germanium), GaAs (gallium arsenide), GaAlAs (gallium aluminum arsenide), or the like may be used for the substrate instead of silicon.
- FIG. 1A illustrates a configuration in which the peripheral circuit 20 provided on the substrate 25 is provided in a region overlapping the circuit units 30_1 to 30_N, but is provided outside the region overlapping the circuit units 30_1 to 30_N on the substrate 25.
- the circuit unit 30 has a substrate 50 and an element layer 40 provided in contact with the substrate 50 .
- the element layer 40 has a memory circuit 60 .
- the memory circuit 60 has memory cells.
- the memory circuit 60 has elements such as transistors.
- the circuit units 30_1 to 30_N are stacked vertically or substantially vertically with respect to the surface of the substrate 25 .
- the element layer 40 and the substrate 50 are stacked vertically or substantially vertically with respect to the surface of the substrate 25 .
- the number of circuit units 30_1 to 30_N arranged per unit area can be increased. Therefore, the memory density of the memory cells included in the memory circuit 60 can be increased.
- the direction perpendicular or substantially perpendicular to the surface of the substrate 25 is defined as the z-axis direction in order to explain the arrangement of each component.
- the z-axis direction may be referred to as a direction perpendicular to the surface of the substrate 25 in the specification.
- substantially perpendicular means a state in which they are arranged at an angle of 85 degrees or more and 95 degrees or less.
- the peripheral circuit 20 includes circuits that output signals for driving the circuit units 30_1 to 30_N, such as row drivers and column drivers. Peripheral circuitry 20 may be referred to as control circuitry, drive circuitry, or circuitry.
- a row driver is a circuit that has a function of outputting a signal for driving a memory cell to a word line.
- a word line has a function of transmitting a word signal to a memory cell.
- a row driver may be referred to as a word line side driver circuit.
- the row driver includes a decoder circuit for selecting a word line corresponding to a designated address, a buffer circuit, and the like.
- a column driver is a circuit having a function of outputting a signal for driving a memory cell to a bit line, a function of outputting data to be written into a memory cell, and a function of amplifying data read from the memory cell to the bit line. .
- a bit line has a function of transmitting data to a memory cell.
- a column driver may be referred to as a bit line side drive circuit. Note that the column driver includes a sense amplifier, a precharge circuit, a decoder circuit for selecting a bit line corresponding to a designated address, and the like.
- the peripheral circuit 20 preferably drives the memory cells of the memory circuit 60 at high speed. Therefore, the peripheral circuit 20 preferably has transistors that operate at high speed.
- the transistor included in the peripheral circuit 20 is preferably a transistor (Si transistor) having excellent field effect mobility and having a channel formation region containing silicon.
- FIG. 1B shows the circuit unit 30 applicable to the circuit units 30_1 to 30_N.
- the circuit unit 30 has a substrate 50 and an element layer 40 provided in contact with the substrate 50 .
- the substrate 50 is a substrate for forming elements such as transistors included in the element layer 40 .
- a silicon substrate can be used as the substrate 50 .
- the element layer 40 has a memory circuit 60 , electrodes 41 , 42 and 43 .
- the substrate 50 and the device layer 40 have through electrodes 44 .
- the through electrode 44 is exposed on the surface of the substrate 50 and electrically connected to the electrode 41 .
- the through electrode 44 is an electrode that penetrates through the substrate 50 after forming the electrodes 41 to 43 on the substrate 50 .
- the electrode 41 is electrically connected to the electrode 43 via the electrode 42 .
- the electrode 43 is provided exposed on the surface of the element layer 40 .
- the electrodes 41 to 43 are electrodes provided on the element layer 40 side on the substrate 50, like the circuit unit 30b shown in FIG. 1C.
- the electrode 41 is an electrode formed of a conductor provided on the substrate 50 and below the transistors and capacitors of the memory circuit 60 .
- the electrodes 41 are provided at positions where the through electrodes 44 (not shown) are provided.
- Examples of materials that can be used for the electrode 41 include metals such as aluminum, titanium, chromium, nickel, copper, yttrium, zirconium, molybdenum, silver, tantalum, and tungsten, and alloys containing these metals as main components. be done. A film containing these materials can be used as a single layer or as a laminated structure. Copper is particularly suitable for the electrode 41 .
- the electrode 42 is an electrode formed of a conductor provided in the same layer as the transistors and capacitors of the memory circuit 60 .
- the electrode 42 is an electrode having a conductor provided in the same layer as a conductor functioning as a gate electrode, a source electrode or a drain electrode of a transistor 45 in the memory circuit 60, as shown in FIG. 2A, for example.
- Examples of materials that can be used for the electrode 42 include metals such as aluminum, titanium, chromium, nickel, copper, yttrium, zirconium, molybdenum, silver, tantalum, and tungsten, and alloys containing these metals as main components. be done. A film containing these materials can be used as a single layer or as a laminated structure.
- the electrode 43 is an electrode provided at a position where the electrode 42 is exposed on the surface of the element layer 40, like the circuit unit 30b illustrated in FIG. 1C.
- Materials that can be used for the electrode 43 include materials similar to those for the electrode 41 .
- the through electrode 44 can use through electrode technology such as TSV (Through Silicon Via). Specifically, the through electrodes 44 can be formed after bonding the circuit unit 30b to the substrate 25 face down (face down bonding) as shown in the schematic cross-sectional view of FIG. 2B. In FIG. 2B, the substrate 25 having the transistor 21 and the electrode 22 of the peripheral circuit 20 is illustrated as the substrate to which the circuit unit 30b is attached. If substrate 25 is a silicon substrate, transistor 21 may be a Si transistor.
- the through electrode 44 is provided so as to penetrate the substrate 50 and connect with the electrode 43 provided in the element layer 40 .
- the through electrode 44 is formed by forming a through hole in the substrate 50 reaching the electrode 41 of the element layer 40, forming a base film such as titanium nitride, and then forming a conductive layer such as Cu inside the hole. can be set in An insulating layer such as silicon oxide may be provided on the side surface of the hole before forming the base film.
- FIG. 3A An example of the circuit configuration of the memory cells included in the memory circuit 60 is shown in FIG. 3A.
- Memory cell 46 illustrated in FIG. 3A has transistor 45 and capacitor 47 .
- One of the source and drain of the transistor 45 is connected to the wiring BL (illustrated by a thick line).
- a gate of the transistor 45 is connected to the wiring WL.
- the other of the source and drain of transistor 45 is connected to capacitor 47 .
- the wiring BL may be called a bit line
- the wiring WL may be called a word line.
- the through electrode 44 exposed on the surface of the substrate 50 is provided on the substrate 50 side as the terminal BLD . Further, the electrode 43 exposed on the surface of the element layer 40 is provided on the element layer 40 side as a terminal BLU .
- the terminals BLD and BLU can function as terminals provided on the front and back sides of the circuit unit 30 by electrically connecting the through electrodes 44 and the electrodes 41 to 43 .
- FIG. 3B A schematic diagram of a plurality of circuit units 30_1 to 30_N having memory cells 46 stacked on the substrate 25 is shown in FIG. 3B.
- a wiring corresponding to the wiring BL (indicated by a thick line) is connected to the peripheral circuit 20 via the terminal BLD and the terminal BLU described with reference to FIG. 3A.
- the wiring WL can also be connected to the peripheral circuit 20 in the same manner.
- the transistor 45 provided in the element layer 40 is preferably an OS transistor.
- An OS transistor has an extremely small off-state current. Therefore, the charge corresponding to the data written in the memory cell 46 can be held in the capacitor 47 for a long time. In other words, once written data can be held in the memory cell 46 for a long time. Therefore, the frequency of data refresh can be reduced, and the power consumption of the semiconductor device of one embodiment of the present invention can be reduced.
- the OS transistors are stacked, the same manufacturing process can be repeated in the vertical direction, so that memory density can be improved and manufacturing cost can be reduced.
- a memory cell 46 having a transistor 45 can be called a DOSRAM (Dynamic Oxide Semiconductor Random Access Memory) using an OS transistor as a memory.
- a DOSRAM can be configured with one transistor and one capacitor, so that high-density memory can be realized. Further, with the use of the OS transistor, the data retention period can be increased.
- Transistor 45 is shown as a top-gate structure or bottom-gate structure transistor without a back gate electrode, the structure of the transistor 45 is not limited to this.
- Transistor 45 preferably has a back gate electrode. By controlling the potential applied to the back gate electrode, the threshold voltage of the transistor 45 can be controlled. Thereby, for example, the ON current of the transistor 45 can be increased and the OFF current can be decreased.
- the memory cell 46 using the OS transistor can be freely arranged even in a region overlapping with the through electrode 44, so integration can be easily performed. Therefore, the number of memory cells arranged per unit area can be increased, and the memory density can be increased.
- OS transistors have better electrical characteristics than Si transistors in high-temperature environments. Specifically, even at a high temperature of 125° C. or more and 150° C. or less, a good switching operation can be performed because the ratio of the on-current to the off-current is large.
- the memory cell 46 may be a NOSRAM (Nonvolatile Oxide Semiconductor Random Access Memory). Since NOSRAM rewrites data by charging and discharging a capacitor, there is no limitation on the number of rewrites in principle, and data can be written and read with low energy. NOSRAM is capable of increasing the capacity of data per memory cell compared to DOSRAM by making the data multi-valued with three or more values.
- NOSRAM Nonvolatile Oxide Semiconductor Random Access Memory
- connection between the circuit units 30 describes a configuration in which the through electrode 44 and the electrode 43 are directly connected.
- the through electrodes 44 embedded in the insulating layer 44S and the electrodes 43 embedded in the insulating layer 43S can be connected using Cu--Cu bonding.
- Cu-Cu bonding is a technique for achieving electrical continuity by connecting Cu (copper) pads to each other.
- the penetrating electrode 44 and the electrode 43 may be directly connected without a Cu (copper) pad.
- the through electrode 44 embedded in the insulating layer 44S and the electrode 43 embedded in the insulating layer 43S are placed between the circuit units (between the circuit unit 30_N and the circuit unit 30_N ⁇ 1). ) can be connected via metal bumps 59 (also referred to as microbumps).
- the circuit units may be connected with the bonding layer 61, and then the through electrode 44 and the electrode 43 may be connected.
- the bonding layer 61 is preferably made of silicon oxide or the like, which planarizes the surface and allows the hydroxyl groups on the surface of the bonding layer 61 to form bonds. Silicon oxide is preferable because it can improve surface flatness compared to silicon nitride or the like. Note that when the bonding layer 61 is formed of silicon oxide, the hydroxyl groups on the surface of the silicon oxide of the bonding layer 61 are bonded to each other by van der Waals force, and the subsequent heat treatment causes bonding between silicon and oxygen and water molecules. may be generated.
- the bonding of the circuit units can be performed within a range of 350° C. to 450° C. as the upper limit without exposing them to a high temperature of 1000° C. or higher. In other words, it is possible to bond the circuit units together without exposing them to high temperatures. Therefore, it is possible to suppress variation in electrical characteristics of the OS transistor due to exposure of the circuit unit to high temperatures. In addition, since the Si transistors are not exposed to high temperatures when the circuit units are bonded together, copper wiring can be used.
- the flatness of the surface on which the through electrodes 44 are provided may be improved.
- the through electrode 44A has improved flatness on the surface of the substrate 50. As shown in FIG.
- the substrate 50 in the circuit unit 30 may have a functional circuit 51 having a transistor 52 in a region where the through electrode 44 is not provided, like the circuit unit 30B shown in FIG. 5B.
- the functional circuit 51 includes, for example, a circuit for outputting a signal for driving the memory circuit 60 included in the element layer 40 .
- the functional circuit 51 preferably has transistors that operate at high speed.
- the transistor 52 included in the functional circuit 51 is preferably a Si transistor with excellent field effect mobility.
- the functional circuit 51 may be a memory circuit, for example, a DRAM (Dynamic Random Access Memory) having a transistor 52 provided on the substrate 50 .
- DRAM Dynamic Random Access Memory
- a DRAM with Si transistors is superior in data transfer speed compared to a DOSRAM with OS transistors.
- a DOSRAM having an OS transistor can reduce the frequency of data refresh compared to a DRAM having a Si transistor, and is therefore effective in reducing power consumption. In order to achieve both data transfer speed and low power consumption, it is effective to switch the state of using DRAM or DOSRAM according to the access state of data.
- the functional circuit 51 can be a sensor circuit provided on the substrate 50 .
- a photodiode can be provided by using a silicon substrate as the substrate 50 and adding an impurity element.
- the sensor circuit can be provided stacked with the circuit unit 30 having the memory circuit 60 .
- the through-electrode 44 may be an electrode penetrating the substrate 50 and penetrating the element layer 40 .
- a region where the functional circuit 51 is not provided may have through electrodes 44B penetrating through the substrate 50 and through the element layer 40, like the circuit unit 30C illustrated in FIG. 5C.
- the through electrode 44B can be connected to an electrode 43A provided in the same layer as the electrode 43.
- the element layer 40 may be omitted.
- the front surface and the rear surface may be electrically connected by a through electrode 44B penetrating through the substrate 50A.
- a substrate 50A having a functional circuit 51 can be placed on the circuit unit layer 30_B illustrated in FIG. 3B, as illustrated in FIG. 6B. Therefore, it is possible to form a semiconductor device in which the circuit unit 30 having the memory cells 46 called DOSRAM and the substrate 50A having the DRAM are laminated.
- FIG. 7 illustrates the element layer 40 on the substrate 50 .
- An insulating layer 330 and an electrode 41 are provided on the substrate 50 .
- a transistor 45 , a capacitor 47 , an electrode 42 and an electrode 43 are illustrated on the electrode 41 .
- the transistor 45 is an OS transistor.
- the transistor 45 includes a semiconductor layer 321 , an insulating layer 323 , a conductive layer 324 , a pair of conductive layers 325 , an insulating layer 326 , and a conductive layer 327 .
- the insulating layer 332 functions as a barrier layer that prevents impurities such as water or hydrogen from diffusing from the insulating layer 331 into the transistor 45 and prevents oxygen from desorbing from the semiconductor layer 321 to the insulating layer 332 side.
- a film into which hydrogen or oxygen is less likely to diffuse than a silicon oxide film such as an aluminum oxide film, a hafnium oxide film, or a silicon nitride film, can be used.
- a conductive layer 327 is provided over the insulating layer 332 , and an insulating layer 326 is provided to cover the conductive layer 327 .
- the conductive layer 327 functions as a first gate electrode of the transistor 45, and part of the insulating layer 326 functions as a first gate insulating layer.
- An oxide insulating film such as a silicon oxide film is preferably used for at least a portion of the insulating layer 326 that is in contact with the semiconductor layer 321 .
- the upper surface of the insulating layer 326 is preferably planarized.
- the semiconductor layer 321 is provided on the insulating layer 326 .
- the semiconductor layer 321 preferably includes a metal oxide (also referred to as an oxide semiconductor) film having semiconductor characteristics.
- metal oxides include In-M-Zn oxides (element M is aluminum, gallium, yttrium, tin, copper, vanadium, beryllium, boron, titanium, iron, nickel, germanium, zirconium, molybdenum, lanthanum, A metal oxide such as one or more selected from cerium, neodymium, hafnium, tantalum, tungsten, magnesium, etc.) may be used.
- oxide semiconductor indium oxide, In—Ga oxide, or In—Zn oxide, that is, an oxide semiconductor containing In, Ga, and Zn may be used. Note that the on-state current, the field-effect mobility, or the like of the transistor can be increased by using an oxide semiconductor with a high indium ratio.
- a pair of conductive layers 325 are provided on and in contact with the semiconductor layer 321 and function as a source electrode and a drain electrode.
- An insulating layer 328 is provided covering the top and side surfaces of the pair of conductive layers 325 and the side surface of the semiconductor layer 321, and the insulating layer 264 is provided on the insulating layer 328.
- the insulating layer 328 functions as a barrier layer that prevents impurities such as water or hydrogen from diffusing into the semiconductor layer 321 from the insulating layer 264 or the like and oxygen from leaving the semiconductor layer 321 .
- an insulating film similar to the insulating layer 332 can be used as the insulating layer 328.
- An opening reaching the semiconductor layer 321 is provided in the insulating layer 328 and the insulating layer 264 .
- the insulating layer 323 and the conductive layer 324 are buried in contact with the side surfaces of the insulating layer 264 , the insulating layer 328 , and the conductive layer 325 and the top surface of the semiconductor layer 321 .
- the conductive layer 324 functions as a second gate electrode, and the insulating layer 323 functions as a second gate insulating layer.
- the top surface of the conductive layer 324, the top surface of the insulating layer 323, and the top surface of the insulating layer 264 are planarized so that their heights are the same or substantially the same, and the insulating layers 329 and 265 are provided to cover them. ing.
- the insulating layer 330, the insulating layer 331, the insulating layer 264, and the insulating layer 265 function as interlayer insulating layers.
- the insulating layer 329 functions as a barrier layer that prevents impurities such as water or hydrogen from diffusing into the transistor 45 from the insulating layer 265 or the like.
- an insulating film similar to the insulating layers 328 and 332 can be used.
- the electrode 42 preferably has a conductive layer 274a covering the side and bottom surfaces of the opening and a conductive layer 274b in contact with the upper surface of the conductive layer 274a. At this time, a conductive material into which hydrogen and oxygen are difficult to diffuse is preferably used for the conductive layer 274a.
- a capacitor 47 is provided on the insulating layer 265 .
- the capacitor 47 has a conductive layer 241, a conductive layer 245, and an insulating layer 243 positioned therebetween.
- the conductive layer 241 functions as one electrode of the capacitor 47
- the conductive layer 245 functions as the other electrode of the capacitor 47
- the insulating layer 243 functions as the dielectric of the capacitor 47 .
- the conductive layer 241 is provided on the insulating layer 265 and embedded in the insulating layer 254 .
- the conductive layer 241 is electrically connected to one of the source and drain of the transistor 45 by electrodes embedded in the insulating layers 265 , 329 , 264 and 328 .
- An insulating layer 243 is provided over the conductive layer 241 .
- the conductive layer 245 is provided in a region overlapping with the conductive layer 241 with the insulating layer 243 provided therebetween.
- An insulating layer 255 a is provided to cover the capacitor 47 .
- the insulating layer 255a is provided with an electrode 42C connected to the electrode 42, and the electrode 43 is provided thereon.
- Electrode 42C can be provided in the same manner as electrode 42.
- Electrode 43 can be provided in the same manner as electrode 41 .
- As the insulating layer 255a various inorganic insulating films such as an oxide insulating film, a nitride insulating film, an oxynitride insulating film, and a nitride oxide insulating film can be preferably used.
- FIG. 8 shows a vertical channel transistor 45A in which the semiconductor layer of the transistor 45 of FIG. 7 is provided vertically with respect to the substrate. 8 shows a capacitor 47A having a different shape (deep hole type) from the planar type capacitor 47 shown in FIG.
- a conductive layer 441 functioning as a wiring BL is provided over the insulating layer 331, and a hole is formed in the stacked body in which the insulating layer 442 and the conductive layer 443 are stacked.
- An insulating layer 444 is formed on the side surface of the conductive layer 443 provided with the hole.
- a conductive layer 445, a conductive layer 446, a metal oxide layer 447, a conductive layer 448, an insulating layer 449, and a conductive layer 450 are provided in the hole.
- a conductive layer 451 is provided over the conductive layer 450 .
- each metal oxide layer, each conductive layer, and each insulating layer the materials listed as the metal oxide layer, conductive layer, and insulating layer described with reference to FIG. 7 can be used.
- Each metal oxide layer, each conductive layer, and each insulating layer can be formed by sputtering, CVD, PLD, atomic layer deposition (ALD), or the like.
- the conductive layer 443 functions as the gate of the transistor 45.
- the insulating layer 444 functions as a gate insulating film of the transistor 45A.
- the conductive layer 446 functions as a source electrode or a drain electrode of the transistor 45A.
- the metal oxide layer 447 functions as a semiconductor layer having a channel formation region of the transistor 45A.
- Conductive layer 448 and conductive layer 450 function as electrodes of capacitor 47A.
- the front and back sides of the circuit unit are electrically connected. can do.
- FIG. 9 shows a vertical channel transistor 45B in which the semiconductor layer of the transistor is provided vertically with respect to the substrate.
- FIG. 9 illustrates a configuration in which the semiconductor layer of the transistor 45B is provided along the wall surface of the hole.
- FIG. 9 also shows a deep-hole type capacitor 47B having a structure different from that of the deep-hole type capacitor shown in FIG.
- a conductive layer 461 functioning as a wiring BL is provided over the insulating layer 331, and a hole is formed in a stacked body in which an insulating layer 462 and a conductive layer 463 are stacked.
- An insulating layer 464 is formed on the side surfaces of the insulating layer 462 and the conductive layer 463 provided with the hole.
- a metal oxide layer 466 in contact with the conductive layer 465 is provided in the hole, and an insulating layer 467 is embedded.
- a conductive layer 468 is provided in contact with the metal oxide layer, and a conductive layer 469, an insulating layer 470, and a conductive layer 471 are provided thereover.
- a conductive layer 472 is provided over the conductive layer 471 .
- each metal oxide layer, each conductive layer, and each insulating layer the materials listed as the metal oxide layer, conductive layer, and insulating layer described with reference to FIG. 7 can be used.
- Each metal oxide layer, each conductive layer, and each insulating layer can be formed by sputtering, CVD, PLD, atomic layer deposition (ALD), or the like.
- the conductive layer 463 functions as the gate of the transistor 45B.
- the insulating layer 464 functions as a gate insulating film of the transistor 45B.
- the conductive layers 465 and 468 function as source and drain electrodes of the transistor 45B.
- the metal oxide layer 466 functions as a semiconductor layer having a channel formation region of the transistor 45B.
- the conductive layers 469 and 471 function as electrodes of the capacitor 47B.
- the front and back sides of the circuit unit are electrically connected. can do.
- an element such as a transistor can be arranged in a region where the through electrodes are provided. Therefore, in the semiconductor device, the memory density per unit area can be improved.
- An OS transistor with extremely low off-state current can be used as the transistor provided in the element layer. Therefore, the frequency of refreshing data held in memory cells can be reduced, and the semiconductor device can consume less power.
- the OS transistor can be stacked and manufactured using the same manufacturing process repeatedly in the vertical direction, so that manufacturing cost can be reduced.
- transistors included in memory cells are arranged not in a horizontal direction but in a vertical direction, so that memory density can be improved and the size of the device can be reduced.
- OS transistors have less variation in electrical characteristics than Si transistors even in high-temperature environments, the semiconductor device functions as a highly reliable storage device with less variation in electrical characteristics when stacked and integrated. can be
- Embodiment 2 In this embodiment, a structure example of a semiconductor device which is one embodiment of the present invention, which is different from that in Embodiment 1, will be described. In addition, about the description which overlaps with Embodiment 1, detailed description is abbreviate
- FIG. 10A is a schematic cross-sectional view of the semiconductor device described in this embodiment.
- a circuit unit 30M shown in FIG. 10A is a memory using a magnetic tunnel junction (hereinafter referred to as MTJ) element, which is a variable resistance memory element, in the element layer 40 of the circuit unit 30 described in the first embodiment.
- MTJ magnetic tunnel junction
- a configuration having memory cells 46M having STT-MRAM (Spin Transfer Torque-Magnetoresistive Random Access Memory) is shown.
- a memory cell 46M illustrated in FIG. 10A has an MTJ element 47M in addition to the transistor 45 which is an OS transistor.
- the through electrode 44 exposed on the surface of the substrate 50 is provided on the substrate 50 side as the terminal BLD .
- the electrode 43 exposed on the surface of the element layer 40 is provided on the element layer 40 side as a terminal BLU .
- the terminals BLD and BLU can function as terminals provided on the front and back sides of the circuit unit 30 by electrically connecting the through electrodes 44 and the electrodes 41 to 43 as in FIG. 3A.
- FIG. 10B illustrates a configuration example of a circuit unit section 30M_B having circuit units 30M_1 to 30M_N to which the circuit unit 30M illustrated in FIG. 10A is applicable.
- a wiring corresponding to the wiring BL is connected to the peripheral circuit 20 via the terminal BLD and the terminal BLU described in FIG. 10A.
- the wiring WL can also be connected to the peripheral circuit 20 in the same manner.
- FIG. 11A shows a circuit diagram of a memory cell 46M having an MTJ element 47M.
- a memory cell 46M shown in FIG. 11A has a transistor 45 and an MTJ element 47M.
- a transistor 45 is an OS transistor having a back gate.
- the MTJ element 47M includes a free layer 136 (also referred to as a recording layer, free layer, or movable layer), a fixed layer 137 (also referred to as a fixed magnetization layer, pinned layer, or reference layer), It has an insulating layer 138 (also called a barrier layer, a tunnel insulating film, or a nonmagnetic layer).
- the free layer 136 of the MTJ element 47M is called one terminal, and the fixed layer 137 is called the other terminal.
- One of the source and drain of the transistor 45 is connected to the wiring BL (or BLB).
- a gate of the transistor 45 is connected to the wiring WL.
- the other of the source and drain of the transistor 45 is connected to one terminal of the MTJ element 47M.
- the other terminal of the MTJ element 47M is connected to the wiring SL.
- a back gate of the transistor 45 is connected to the wiring BGL.
- the threshold voltage of transistor 45 can be changed by voltage Vbg.
- FIG. 11B shows a configuration in which the configuration of the capacitor 47 in the schematic cross-sectional view described in FIG. 7 of the first embodiment is replaced with an MTJ element 47M.
- MTJ element 47M in the configuration illustrated in FIG. Note that the MTJ element shown in FIG. 11B can be used in combination with the vertical channel transistor 45A described in FIG. 8 or the vertical channel transistor 45B described in FIG.
- Magnesium oxide (MgO), aluminum oxide (Al 2 O 3 ), or the like may be used for the insulating layer 138 .
- a ferromagnetic material such as iron (Fe) or cobalt (Co), or an alloy thereof may be used for the free layer 136 and the fixed layer 137 .
- the free layer 136, fixed layer 137 and insulating layer 138 can be formed of a single layer or multiple layers. Note that the free layer 136, the fixed layer 137, and the insulating layer 138 may have insulators or the like on the sidewalls for ease of processing.
- the MTJ element 47M will now be described with reference to FIGS. 12A to 12C.
- FIG. 12A is a schematic diagram of the cross-sectional structure of the MTJ element 47M.
- the MTJ element 47M is composed of a free layer 136 made of a ferromagnetic material and a fixed layer 137 made of a ferromagnetic material separated by an insulating layer 138 .
- the fixed layer 137 is a layer whose magnetization direction, that is, spin direction is fixed.
- the free layer 136 is a layer whose magnetization direction, that is, spin direction is not fixed.
- the resistance value of the MTJ element 47M changes depending on the relative orientation of the magnetization directions of the free layer 136 and the fixed layer 137 (indicated by arrow symbol 139 in FIG. 12A). That is, the MTJ element 47M can take two states depending on the magnetization direction as shown in FIG. 12A.
- a change in resistance that depends on the direction of magnetization is called tunnel magnetoresistance (hereinafter referred to as TMR).
- TMR tunnel magnetoresistance
- a state in which the magnetization directions of the free layer 136 and the fixed layer 137 are aligned is called a parallel state, and the resistance value of the MTJ element 47M at this time is the minimum, and this state can be represented by “P” or data “0”. .
- a state in which the magnetization directions of the free layer 136 and the fixed layer 137 are opposite to each other is called an antiparallel state, and the resistance value of the MTJ element 47M at this time is maximum, and this state is represented by "AP" or data "1". be able to.
- AP the resistance value of the MTJ element 47M at this time
- the MTJ element 47M is a variable resistance memory element that utilizes the fact that resistance changes according to the magnetization direction.
- the MTJ element 47M is non-volatile, capable of high-speed rewriting, and theoretically has an infinite number of rewrites.
- the write current of the MTJ element 47M can be reduced as the element is miniaturized.
- FIG. 12B is a diagram showing the principle of writing by the spin injection method for changing the magnetization directions of the free layer 136 and the fixed layer 137 from the antiparallel state to the parallel state in the MTJ element 47M.
- a current I AP is passed in the direction from the free layer 136 to the pinned layer 137 .
- the electrons flow in the direction opposite to the current IAP (see the dotted arrow).
- This causes injection of spins 133 from the fixed layer 137 to the free layer 136 .
- a spin-polarized current acts on the magnetization of the free layer 136, flipping the magnetization of the free layer 136 to the same direction as the pinned layer 137, and becoming parallel. Note that the spins 133 to be injected are indicated by dashed arrows.
- FIG. 12C is a diagram showing the principle of writing the magnetization directions of the free layer 136 and fixed layer 137 in the MTJ element 47M from the parallel state to the antiparallel state by the spin injection method.
- the MTJ element 47M reverses the magnetization direction of the free layer 136 with respect to the magnetization direction of the fixed layer 137 according to the direction of the current flowing, and when the magnetization directions are parallel to each other, the magnetoresistance decreases. On the other hand, when the magnetization direction of the free layer 136 is antiparallel to the magnetization direction of the fixed layer 137, the magnetoresistance increases. Note that the free layer 136 and the fixed layer 137 in the MTJ element 47M can be used interchangeably by switching the direction of the current. In the MTJ element 47M, the current required for reversing the magnetization can be reduced by miniaturizing the element.
- the OS transistor can be provided at a position overlapping with the through electrode. Therefore, a circuit including an OS transistor can be provided at a position overlapping with the substrate 25 provided with the Si transistor. An increase in circuit area due to having both the Si transistor and the OS transistor can be suppressed. In order to suppress an increase in circuit area, it is effective to provide an MTJ element over the OS transistor.
- the OS transistor used as an access transistor needs to have a large W width in order to pass a current for writing data to the MTJ element.
- a Si transistor as an access transistor
- both miniaturization and an increase in write current are required.
- the OS transistor as an access transistor
- the current required for rewriting the MTJ element can be increased, it is possible to more reliably write and read data in the MTJ element.
- the OS transistor has a small off current. Therefore, even if the W width direction is designed to be large in order to allow a large amount of current to flow through the access transistor, it is possible to suppress an increase in leakage current when the access transistor is turned off. Therefore, a memory device with low power consumption can be provided. In addition, by applying a potential to the back gate electrode of the OS transistor, variation in electrical characteristics such as a threshold voltage can be suppressed.
- FIG. 13 is a block diagram illustrating an imaging device, which is an example of a semiconductor device having a memory cell 46M having the MTJ element 47M described in this embodiment.
- An imaging device 10IS illustrated in FIG. 13 has a circuit unit 30 and an optical conversion layer 90 on a substrate 25 having a peripheral circuit 20.
- the circuit unit 30 has a configuration in which an element layer 40_1 and an element layer 40_2 are laminated on a substrate 50. As shown in FIG.
- the substrate 50 has a photoelectric conversion device 83 .
- a photodiode for example, can be used for the photoelectric conversion device 83 .
- Photoelectric conversion device 83 is preferably sensitive to visible light.
- a Si photodiode using silicon as a photoelectric conversion layer can be used for the photoelectric conversion device 83 .
- the element layer 40_1 can be provided with, for example, a pixel circuit 81 connected to an optical conversion device, a driving circuit 82 for the pixel circuit, and the like.
- the drive circuit 82 can be formed in the same process as the pixel circuit 81 .
- the photoelectric conversion device 83 described above can also be said to be an element of the pixel circuit 81 .
- Each transistor included in the element layer 40_1 can be stacked with the transistor included in the element layer 40_2 by using an OS transistor.
- the element layer 40_2 can be provided with a memory circuit 60 having a plurality of memory cells 46M. Each transistor included in the element layer 40_2 can be stacked with the transistor included in the element layer 40_1 by using an OS transistor.
- a circuit using OS transistors included in the element layers 40_1 and 40_2 including OS transistors is formed over the substrate 50 which is a Si device, whereby polishing and bonding steps can be reduced. .
- the memory circuit 60 has a structure in which the pixel circuits 81 and the photoelectric conversion devices 83 are stacked, so that the data of the photoelectric conversion devices 83 are simultaneously acquired by the plurality of pixel circuits 81, and the global shutter operation of sequentially reading the data is performed. This can be done with a simple circuit configuration.
- Si transistors include transistors containing amorphous silicon, transistors containing crystalline silicon (microcrystalline silicon, low-temperature polysilicon, single-crystal silicon), and the like. It should be noted that the drive circuit 82 of the pixel circuit may be partially or wholly formed of a Si transistor.
- a color filter 91 or the like can be used for the optical conversion layer 90 .
- the optical conversion layer 90 can have a microlens array.
- FIG. 14 shows a schematic cross-sectional view having elements applicable to the imaging device 10IS described in FIG.
- the peripheral circuit 20 of the substrate 25 is provided with a plurality of transistors 21, which are Si transistors, as described in the first embodiment. Further, the substrate 25 has the electrodes 22 as described in the first embodiment. The electrodes 22 are electrodes for electrically connecting the plurality of transistors 21 and the circuit unit 30 in the upper layer.
- the element layer 40_2 of the circuit unit 30 has electrodes 41 to 43, a transistor 45_3 and an MTJ element 47M.
- the transistor 45_3 is a transistor corresponding to the transistor 45 and an OS transistor.
- the MTJ element 47M has the free layer 136 made of ferromagnetic material and the fixed layer 137 made of ferromagnetic material separated by the insulating layer 138 between the conductive layers 241 and 245 as described above.
- An element layer 40_1 included in the circuit unit 30 has transistors 45_1 and 45_2.
- the transistors 45_1 and 45_2 are OS transistors that can be used in the pixel circuit 81 and the driver circuit 82 .
- the substrate 50 of the circuit unit 30 has a photoelectric conversion device 83 .
- the photoelectric conversion device 83 is a pn junction photodiode formed on the substrate 50 which is a silicon substrate, and has a p-type region 84 and an n-type region 85 .
- the photoelectric conversion device 83 is an embedded photodiode, and the thin p-type region 84 provided on the surface side (current extraction side) of the n-type region 85 can suppress dark current and reduce noise.
- a groove 86 for separating pixels is provided in the substrate 50, and an insulating layer may be provided in the groove 86. With this configuration, carriers generated in the photoelectric conversion device 83 can be prevented from flowing out to adjacent pixels.
- An antireflection film may be provided on the upper surface side of the substrate 50 .
- the optical conversion layer 90 has a color filter 91 , a light shielding layer 92 and a microlens array 93 .
- the light shielding layer 92 can suppress the inflow of light into adjacent pixels.
- a metal layer such as aluminum or tungsten can be used as the light shielding layer 92 .
- the metal layer may be laminated with a dielectric film functioning as an antireflection film.
- a color filter 91 can be used for the optical conversion layer 90 when the photoelectric conversion device 83 is sensitive to visible light. Obtaining a color image by assigning color filters of colors such as R (red), G (green), B (blue), Y (yellow), C (cyan), and M (magenta) to each pixel. can be done.
- the microlens array 93 the light passing through each lens passes through the color filter 91 directly below and irradiates the photoelectric conversion device 83 .
- the condensed light can be incident on the photoelectric conversion device 83, so photoelectric conversion can be performed efficiently.
- the microlens array 93 is preferably made of resin, glass, or the like, which is highly translucent to the light of the target wavelength.
- Embodiment 1 when a plurality of element layers formed over different substrates are connected by through electrodes, a transistor is provided in a region where the through electrodes are provided. elements can be arranged. Therefore, in the semiconductor device, the memory density per unit area can be improved.
- An OS transistor with extremely low off-state current can be used as the transistor provided in the element layer. Therefore, the frequency of refreshing data held in memory cells can be reduced, and the semiconductor device can consume less power.
- the OS transistor can be stacked and manufactured using the same manufacturing process repeatedly in the vertical direction, so that manufacturing cost can be reduced.
- transistors included in memory cells are arranged not in a horizontal direction but in a vertical direction, so that memory density can be improved and the size of the device can be reduced.
- OS transistors have less variation in electrical characteristics than Si transistors even in high-temperature environments, the semiconductor device functions as a highly reliable storage device with less variation in electrical characteristics when stacked and integrated. can be
- FIG. 15A is a diagram explaining the circuit configuration of a memory string.
- a selection transistor SST memory transistors MT1 to MT2k (k is an integer equal to or greater than 1), and a selection transistor SDT are electrically connected in series between a wiring BL and a source line SL.
- the memory transistors MT1 to MT2k are transistors corresponding to the word lines WL1 to WL2k.
- the memory transistor connected to word line WL1 is memory transistor MT1.
- the memory transistors MT1 to MT2k are not distinguished, they are referred to as memory transistors MT. The same applies to other elements.
- the select transistors SST and SDT and the memory transistors MT1 to MT2k are vertical channel transistors whose semiconductor layers are made of metal oxide.
- the memory transistor MT has a charge storage layer and constitutes a nonvolatile memory cell.
- Gates of the select transistors SST and SDT are electrically connected to select gate lines SGL and DGL, respectively.
- Gates of the memory transistors MT1 to MT2k are electrically connected to word lines WL1 to WL2k, respectively.
- FIG. 15B is a cross-sectional view explaining an example of a memory string.
- the element layer 40 having memory cell strings has an insulating layer 330 , an electrode 41 and an insulating layer 331 , and a conductive layer 741 on the substrate 50 .
- the conductive layers 742 and the insulating layers 724 form a laminate that is alternately laminated.
- a columnar structure having an insulating layer 743, a charge storage layer 744, an insulating layer 745, a metal oxide layer 746, and an insulating layer 747 is provided so as to fill the hole provided in the stack.
- the lower end of the metal oxide layer 746 is electrically connected to the conductive layer 741, and the upper end of the metal oxide layer 746 is electrically connected to one of the wiring BL and the wiring SL.
- the vicinity of a region where the conductive layer 742, the insulating layer 743, the charge storage layer 744, the insulating layer 745, and the metal oxide layer 746 overlap functions as the memory transistor MT.
- the vicinity of the region where the conductive layer 742, the insulating layer 747, and the metal oxide layer 746 overlap functions as select transistors SDT and SST.
- a memory transistor MT or select transistors SDT and SST are electrically connected in series and constitute a memory string.
- each metal oxide layer, each conductive layer, and each insulating layer the materials listed as the materials for the metal oxide layer, conductive layer, and insulating layer described with reference to FIG. 7 of Embodiment 1 can be used.
- Each metal oxide layer, each conductive layer, and each insulating layer can be formed by sputtering, CVD, PLD, atomic layer deposition (ALD), or the like. Silicon nitride, silicon oxynitride, aluminum oxide, hafnium oxide, or an oxide containing aluminum and hafnium, for example, can be used as the charge storage layer.
- an opening reaching the electrode 41 is formed in the hole in which the columnar structure is provided, and a conductor corresponding to the electrode 42 described in the first embodiment is provided, thereby forming a circuit unit.
- a configuration in which the front and back surfaces are electrically connected can be employed.
- Embodiment 1 when a plurality of element layers formed over different substrates are connected by through electrodes, a transistor is provided in a region where the through electrodes are provided. elements can be arranged. Therefore, in the semiconductor device, the memory density per unit area can be improved.
- Embodiment 4 In this embodiment, modified examples of the circuit that can be applied to the semiconductor device described in Embodiment 1 will be described with reference to FIGS. 16A to 18C.
- FIG. 16A describes a configuration example in which another functional circuit is added to the element layer 40 having the memory circuit 60 stacked on the substrate 50 in the configuration described in FIG. 1A of the first embodiment.
- the functional circuit has, for example, a function of selecting a wiring for outputting a data signal held in the memory circuit 60 and amplifying the data signal.
- a semiconductor device 10c shown in FIG. 16A is a block diagram in which a functional circuit 62 is added in addition to the memory circuit 60 in the element layer 40 of the circuit units 30_1 to 30_N described in Embodiment 1.
- the memory circuit 60 and the functional circuit 62 may be formed using OS transistors provided in the same layer.
- FIG. 16B shows a circuit unit 30c that can be applied to the circuit units 30_1 to 30_N shown in FIG. 16A.
- the circuit unit 30 c has a substrate 50 and an element layer 40 provided in contact with the substrate 50 .
- the element layer 40 has a functional circuit 62 in addition to the memory circuit 60 , the electrodes 41 , 42 and 43 .
- the substrate 50 and the device layer 40 have through electrodes 44 .
- the functional circuit 62 is connected to the memory circuit 60 via wiring provided in the same layer as the electrode 42 .
- the functional circuit 62 can be electrically connected to the element layer 40 of the peripheral circuit 20 and another circuit unit 30c via the electrode 42, the electrode 41, the electrode 43 and the through electrode 44.
- FIG. 17A shows an example of a functional circuit 62 connected to the memory cells 46 included in the memory circuit 60 shown in FIG. 3A.
- the functional circuit 62 has an amplifier circuit 63 and a selection circuit 64 connected to each of the plurality of wirings BL.
- the amplifier circuit 63 and the selection circuit 64 can have an OS transistor and a capacitor, like the memory circuit 60 included in the element layer 40 .
- the wiring connected to the memory cell 46 is illustrated as the wiring LBL, and the wiring GBL selected by the selection circuit 64 .
- the wiring GBL may be called a global bit line.
- the wiring LBL may be called a local bit line.
- the wiring LBL and the wiring GBL function as bit lines for writing data to or reading data from the memory cell. Note that in the drawings, the wiring LBL and the wiring GBL may be illustrated with a thick line, a thick dotted line, or the like in order to improve visibility.
- the amplifier circuit 63 has a function of amplifying a current or potential corresponding to the potential of the wiring LBL for connecting the plurality of memory cells 46 and transmitting the amplified current or potential to the wiring GBL.
- the selection circuit 64 has a function of selecting a signal according to the current or potential output from the wiring LBL and transmitting it to the wiring GBL.
- the 17B describes a specific circuit configuration of the functional circuit 62 having the amplifier circuit 63 and the selection circuit 64 shown in FIG. 17A.
- the functional circuit 62 shown in FIG. 17B shows transistors 65 to 68 included in the circuit for realizing the amplifying function and the selecting function.
- the transistors 65 to 68 can each be an OS transistor and are illustrated as n-channel transistors.
- the transistor 65 is a transistor for controlling the potential of the wiring GBL according to the potential of the wiring LBL during the period in which data is read from the memory cell 46 .
- the transistor 66 is a transistor that receives a selection signal MUX at its gate and functions as a switch whose ON or OFF state between the source and the drain is controlled according to the selection signal MUX.
- the transistor 67 is a transistor that receives a write control signal WE at its gate and functions as a switch whose on or off state between the source and the drain is controlled according to the write control signal WE.
- the transistor 68 is a transistor that receives a read control signal RE at its gate and functions as a switch whose ON or OFF state between the source and the drain is controlled according to the read control signal RE.
- a ground potential GND which is a fixed potential, is applied to the source side of the transistor 68 .
- the transistor 65 can amplify the potential of the wiring GBL to a potential obtained by amplifying the potential of the wiring LBL.
- the transistor 66 can select a signal corresponding to the current or potential output from the wiring LBL and transmit the selected signal to the wiring GBL in accordance with the selection signal MUX and the read control signal RE.
- the functional circuit 62 since the functional circuit 62 includes the transistor 67 and the transistor 68, data can be written to and read from the memory cell 46 through the wiring GBL and the wiring LBL.
- a semiconductor device of one embodiment of the present invention can be manufactured by repeatedly providing a transistor using the same manufacturing process in the vertical direction over a substrate.
- OS transistors included in memory cells are arranged not in a plane direction but in a vertical direction, so that memory density can be improved and a device can be miniaturized.
- the wiring LBL is connected to the gate of the transistor 65, so that a data signal can be read to the wiring GBL using a slight potential difference in the wiring LBL.
- the functional circuit 62 described in one aspect of the present invention may have another configuration.
- the amplifier circuit 63A may be connected to the wiring WL of the memory cell 46 like the functional circuit 62A of the circuit unit 30d shown in FIG. 18A.
- the amplifier circuit 63A included in the functional circuit 62A has a function of amplifying and transmitting the control signal of the transistor 45 applied to the wiring WL. With this structure, the on/off state of the transistor 45 can be controlled more reliably using the signal of the peripheral circuit 20 provided over the substrate 25 .
- the distance between the element layer 40 of the uppermost circuit unit and the peripheral circuit 20 may be long.
- data can be input/output between the uppermost memory cell and the peripheral circuit 20 by having the function of amplifying data in the functional circuit 62 provided for each circuit unit.
- the memory cell 46 included in the element layer 40 and the peripheral circuit 20 are the circuit units in the uppermost layer, there is no large difference in data write speed and read speed. Data can be input/output.
- the amplifier circuit 63A included in the functional circuit 62A can be provided in the element layer 40 by using an OS transistor.
- an inverter circuit having a transistor 70 and a transistor 71 illustrated in FIG. 18B may be used to amplify and output the signal of the peripheral circuit 20 to the wiring WL.
- an inverter circuit having a transistor 71 and a resistance element 72 illustrated in FIG. 18C may be used to amplify and output a signal of the peripheral circuit 20 to the wiring WL.
- FIGS. 19A and 19B An example of the configuration is shown in FIGS. 19A and 19B.
- a schematic cross-sectional view of an IC chip 100A shown in FIG. 19A has a substrate 25 on a package substrate 101, and four layers of circuit units 30_1 to 30_4 are stacked on the substrate 25 as an example.
- the package substrate 101 is provided with solder balls 102 for connecting the IC chip 100A to a printed circuit board or the like.
- the circuit units 30_1 to 30_4 can have a stacked structure by repeating a structure in which an OS transistor is formed in the element layer 40 in contact with the substrate 50 .
- a peripheral circuit (not shown) provided on the substrate 25 and each circuit included in the circuit units 30_1 to 30_4 are provided in the through electrodes 44 provided through the substrate 50 and the element layers 40 of each layer, and in the element layers.
- each layer can be connected by electrodes 41 to 43 which are connected to each other. Further, each layer can be electrically connected via a metal bump 59 (also referred to as a microbump) provided between each layer of the through electrode 44 and the electrode 43 provided penetrating each layer.
- a metal bump 59 also referred to as a microbump
- the schematic cross-sectional view of an IC chip 100B shown in FIG. 19B has a substrate 25 on a package substrate 101, and four layers of circuit units 30_1 to 30_4 are stacked on the substrate 25, as an example.
- Peripheral circuits (not shown) provided on the substrate 25 and memory circuits (not shown) of the circuit units 30_1 to 30_4 include through electrodes 44 provided through the substrate 50 and element layers 40 of each layer, and Of the electrodes 41 to 43 provided in the element layer, the electrode 43 and the through electrode 44 are used for bonding.
- Cu—Cu bonding can be used as a technique for electrically bonding different layers using the electrodes 43 and the through electrodes 44 .
- Cu-Cu bonding is a technique for achieving electrical continuity by connecting Cu (copper) pads to each other.
- FIG. 20 is a block diagram showing a configuration example of a semiconductor device that functions as a memory device.
- the semiconductor device 10s has a peripheral circuit 20 and a memory cell array 40MA having a plurality of memory circuits 40p.
- the peripheral circuit 20 has a row decoder 571 , a word line driver circuit 572 , a column driver 575 , an output circuit 573 and a control logic circuit 574 .
- the column driver 575 has a column decoder 581, a precharge circuit 582, an amplifier circuit 583, and a write circuit 584.
- the precharge circuit 582 has a function of precharging the wiring BL and the like.
- the amplifier circuit 583 has a function of amplifying the data signal read from the wiring BL. The amplified data signal is output to the outside of the semiconductor device 10s via the output circuit 573 as a digital data signal RDATA.
- the semiconductor device 10s is externally supplied with a low power supply voltage (VSS), a high power supply voltage (VDD) for the peripheral circuit 20, and a high power supply voltage (VIL) for the memory cell array 40MA as power supply voltages.
- VSS low power supply voltage
- VDD high power supply voltage
- VIL high power supply voltage
- Control signals CE, WE, RE
- an address signal ADDR Address signal
- WDATA Data signal
- Address signal ADDR is input to row decoder 571 and column decoder 581
- WDATA is input to write circuit 584 .
- the control logic circuit 574 processes external input signals (CE, WE, RE) to generate control signals for the row decoder 571 and column decoder 581 .
- CE is a chip enable signal
- WE is a write enable signal
- RE is a read enable signal.
- the signal processed by the control logic circuit 574 is not limited to this, and other control signals may be input as necessary. For example, a control signal for determining a defective bit may be input, and a data signal read from a specific memory cell address may be specified as a defective bit.
- FIG. 21 shows various storage devices for each hierarchy.
- a storage device located in a higher layer is required to have a higher access speed, and a storage device located in a lower layer is required to have a larger storage capacity and a higher recording density.
- FIG. 21 shows, in order from the top layer, a memory embedded as a register in an arithmetic processing unit such as a CPU, SRAM (Static Random Access Memory), DRAM (Dynamic Random Access Memory), and 3D NAND memory.
- SRAM Static Random Access Memory
- DRAM Dynamic Random Access Memory
- 3D NAND memory 3D NAND memory
- the memory embedded as a register in an arithmetic processing unit such as a CPU is used for temporary storage of arithmetic results, so it is frequently accessed by the arithmetic processing unit. Therefore, an operating speed faster than the storage capacity is required.
- the register also has a function of holding setting information of the arithmetic processing unit.
- SRAM is used for cache, for example.
- the cache has a function of duplicating and holding part of the information held in the main memory. By replicating frequently used data in the cache, access speed to the data can be increased.
- a DRAM is used, for example, as a main memory.
- the main memory has a function of holding programs, data, etc. read from the storage.
- the recording density of DRAM is approximately 0.1 to 0.3 Gbit/mm 2 .
- 3D NAND memory is used for storage, for example.
- the storage has a function of holding data requiring long-term storage or various programs used in the arithmetic processing unit. Therefore, the storage is required to have a larger storage capacity and a higher recording density than the operating speed.
- the recording density of storage devices used for storage is approximately 0.6 to 6.0 Gbit/mm 2 .
- a semiconductor device functioning as a memory device of one embodiment of the present invention operates at high speed and can hold data for a long time.
- a semiconductor device of one embodiment of the present invention can be preferably used as a semiconductor device located in a boundary region 901 including both a hierarchy in which a cache is located and a hierarchy in which a main memory is located.
- the semiconductor device of one embodiment of the present invention can be preferably used as a semiconductor device located in the boundary region 902 including both the tier where the main memory is located and the tier where the storage is located.
- This embodiment mode shows an example of an electronic component and an electronic device in which the semiconductor device or the like described in the above embodiment mode is incorporated.
- FIG. 22A shows a perspective view of an electronic component 700 and a board (mounting board 704) on which the electronic component 700 is mounted.
- Electronic component 700 shown in FIG. 22A has semiconductor device 10 in which circuit unit 30 is laminated on substrate 25 in mold 711 .
- the semiconductor device 10 described in the first embodiment can be applied.
- FIG. 22A does not reflect part of the drawing in order to show the inside of electronic component 700 .
- Electronic component 700 has lands 712 outside mold 711 . Land 712 is electrically connected to electrode pad 713 , and electrode pad 713 is electrically connected to semiconductor device 10 by wire 714 .
- the electronic component 700 is mounted on a printed circuit board 702, for example.
- a mounting board 704 is completed by combining a plurality of such electronic components and electrically connecting them on the printed board 702 .
- FIG. 22B A perspective view of the electronic component 730 is shown in FIG. 22B.
- Electronic component 730 is an example of SiP (System in package) or MCM (Multi Chip Module).
- An electronic component 730 includes an interposer 731 provided on a package substrate 732 (printed circuit board), and a semiconductor device 735 and a plurality of semiconductor devices 10 provided on the interposer 731 .
- the electronic component 730 shows an example of using the semiconductor device 10 as a high bandwidth memory (HBM).
- HBM high bandwidth memory
- an integrated circuit semiconductor device
- a CPU, GPU, or FPGA can be used.
- a ceramic substrate, a plastic substrate, a glass epoxy substrate, or the like can be used for the package substrate 732 .
- a silicon interposer, a resin interposer, or the like can be used as the interposer 731 .
- the interposer 731 has a plurality of wirings and has a function of electrically connecting a plurality of integrated circuits with different terminal pitches. A plurality of wirings are provided in a single layer or multiple layers.
- the interposer 731 also has a function of electrically connecting the integrated circuit provided over the interposer 731 to electrodes provided over the package substrate 732 . For these reasons, the interposer is sometimes called a "rewiring board" or an "intermediate board".
- through electrodes are provided in the interposer 731 and the integrated circuit and the package substrate 732 are electrically connected using the through electrodes.
- a TSV Through Silicon Via
- a silicon interposer is preferably used as the interposer 731 . Since silicon interposers do not require active elements, they can be manufactured at a lower cost than integrated circuits. On the other hand, since the wiring of the silicon interposer can be formed by a semiconductor process, it is easy to form fine wiring, which is difficult with the resin interposer.
- HBM In HBM, it is necessary to connect many wires in order to achieve a wide memory bandwidth. Therefore, an interposer for mounting an HBM is required to form fine and high-density wiring. Therefore, it is preferable to use a silicon interposer for the interposer that mounts the HBM.
- the reliability is less likely to deteriorate due to the difference in expansion coefficient between the integrated circuit and the interposer.
- the silicon interposer has a highly flat surface, poor connection between the integrated circuit provided on the silicon interposer and the silicon interposer is less likely to occur.
- a 2.5D package 2.5-dimensional packaging in which a plurality of integrated circuits are arranged side by side on an interposer, it is preferable to use a silicon interposer.
- a heat sink may be provided overlapping the electronic component 730 .
- a heat sink it is preferable that the heights of the integrated circuits provided over the interposer 731 be uniform.
- semiconductor device 10 and semiconductor device 735 have the same height.
- An electrode 733 may be provided on the bottom of the package substrate 732 in order to mount the electronic component 730 on another substrate.
- FIG. 22B shows an example of forming the electrodes 733 with solder balls.
- BGA All Grid Array
- the electrodes 733 may be formed of conductive pins.
- PGA Peripheral Component Interconnect
- the electronic component 730 can be mounted on other boards using various mounting methods, not limited to BGA and PGA.
- a mounting method such as SPGA (Staggered Pin Grid Array), LGA (Land Grid Array), QFP (Quad Flat Package), QFJ (Quad Flat J-leaded package), or QFN (Quad Flat Non-leaded package) be able to.
- the robot 7100 includes an illuminance sensor, a microphone, a camera, a speaker, a display, various sensors (infrared sensor, ultrasonic sensor, acceleration sensor, piezo sensor, optical sensor, gyro sensor, etc.), and a movement mechanism.
- Electronic component 730 has a processor and the like, and has a function of controlling these peripheral devices.
- electronic component 700 has a function of storing data acquired by a sensor.
- the microphone has the function of detecting acoustic signals such as the user's voice and environmental sounds.
- the speaker also has the function of emitting audio signals such as voice and warning sounds.
- the robot 7100 can analyze an audio signal input via a microphone and emit a necessary audio signal from a speaker. Robot 7100 can communicate with the user using a microphone and speaker.
- the camera has a function of imaging the surroundings of the robot 7100.
- Robot 7100 also has a function of moving using a moving mechanism.
- the robot 7100 can capture an image of its surroundings using a camera, analyze the image, and sense the presence or absence of an obstacle when moving.
- the flying object 7120 has a propeller, a camera, a battery, etc., and has the function of autonomous flight.
- Electronic component 730 has the function of controlling these peripheral devices.
- image data captured by a camera is stored in the electronic component 700 .
- the electronic component 730 can analyze the image data and sense the presence or absence of obstacles when moving.
- the electronic component 730 can estimate the remaining amount of the battery from the change in the storage capacity of the battery.
- the cleaning robot 7140 has a display on the top, multiple cameras on the sides, a brush, operation buttons, various sensors, and so on. Although not shown, the cleaning robot 7140 is equipped with tires, a suction port, and the like. The cleaning robot 7140 can run by itself, detect dust, and suck the dust from a suction port provided on the bottom surface.
- the electronic component 730 can analyze the image captured by the camera and determine the presence or absence of obstacles such as walls, furniture, or steps. In addition, when an object such as wiring that is likely to get entangled in the brush is detected by image analysis, the rotation of the brush can be stopped.
- a car 7160 has an engine, tires, brakes, a steering device, a camera, and so on.
- electronic component 730 performs controls for optimizing driving conditions of vehicle 7160 based on data such as navigation information, speed, engine status, gear selection status, and frequency of brake use.
- image data captured by a camera is stored in electronic component 700 .
- the electronic component 700 and/or the electronic component 730 can be incorporated into a TV device 7200 (television receiver), a smart phone 7210, a PC (personal computer) 7220, 7230, a game machine 7240, a game machine 7260, and the like.
- the electronic component 730 built into the TV device 7200 can function as an image engine.
- electronic component 730 performs image processing such as noise removal and resolution up-conversion.
- the smart phone 7210 is an example of a mobile information terminal.
- a smartphone 7210 has a microphone, a camera, a speaker, various sensors, and a display portion.
- Electronic components 730 control these peripherals.
- PC7220 and PC7230 are examples of notebook PCs and stationary PCs, respectively.
- a keyboard 7232 and a monitor device 7233 can be connected to the PC 7230 wirelessly or by wire.
- Game machine 7240 is an example of a handheld game machine.
- Game machine 7260 is an example of a stationary game machine.
- a controller 7262 is wirelessly or wiredly connected to the game machine 7260 . Controller 7262 may also incorporate electronic component 700 and/or electronic component 730 .
- the content (may be part of the content) described in one embodiment may be another content (may be part of the content) described in the embodiment, and/or one or more
- the contents described in another embodiment (or part of the contents) can be applied, combined, or replaced.
- electrode and “wiring” in this specification and the like do not functionally limit these components.
- an “electrode” may be used as part of a “wiring” and vice versa.
- the terms “electrode” and “wiring” include the case where a plurality of “electrodes” and “wiring” are integrally formed.
- a voltage is a potential difference from a reference potential.
- the reference potential is a ground voltage
- the voltage can be translated into a potential.
- Ground potential does not necessarily mean 0V. Note that the potential is relative, and the potential applied to the wiring or the like may be changed depending on the reference potential.
- a switch is one that has the function of being in a conducting state (on state) or a non-conducting state (off state) and controlling whether or not to allow current to flow.
- a switch has a function of selecting and switching a path through which current flows.
- the channel length refers to, for example, a region in which a semiconductor (or a portion of the semiconductor in which current flows when the transistor is on) overlaps with a gate in a top view of a transistor, or a channel is formed.
- the channel width refers to, for example, a region where a semiconductor (or a portion of the semiconductor where current flows when the transistor is on) overlaps with a gate electrode, or a region where a channel is formed. is the length of the part where the drain and the drain face each other.
- a and B are connected includes not only direct connection between A and B, but also electrical connection.
- a and B are electrically connected means that when there is an object having some kind of electrical action between A and B, an electric signal can be exchanged between A and B. What to say.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
図2Aおよび図2Bは、半導体装置の構成例を示す図である。
図3Aおよび図3Bは、半導体装置の構成例を示す図である。
図4A乃至図4Cは、半導体装置の構成例を示す図である。
図5A乃至図5Cは、半導体装置の構成例を示す図である。
図6Aおよび図6Bは、半導体装置の構成例を示す図である。
図7は、半導体装置の構成例を示す図である。
図8は、半導体装置の構成例を示す図である。
図9は、半導体装置の構成例を示す図である。
図10Aおよび図10Bは、半導体装置の構成例を示す図である。
図11Aおよび図11Bは、半導体装置の構成例を示す図である。
図12A乃至図12Cは、半導体装置の構成例を示す図である。
図13は、撮像装置の構成例を示す図である。
図14は、撮像装置の構成例を示す図である。
図15Aおよび図15Bは、半導体装置の構成例を示す図である。
図16Aおよび図16Bは、半導体装置の構成例を示す図である。
図17Aおよび図17Bは、半導体装置の構成例を示す図である。
図18A乃至図18Cは、半導体装置の構成例を示す図である。
図19Aおよび図19Bは、半導体装置の構成例を示す図である。
図20は、半導体装置の構成例を説明するブロック図である。
図21は、半導体装置の構成例を示す概念図である。
図22Aおよび図22Bは、電子部品の一例を説明する模式図である。
図23は、電子機器の例を示す図である。
本発明の一態様である半導体装置の構成例について、図1A乃至図1Cを参照して説明する。なお半導体装置は半導体特性を利用した装置であり、半導体素子(トランジスタ、ダイオード、フォトダイオード等)を含む回路、同回路を有する装置である。例えば、オフ電流が極めて小さいトランジスタを利用した半導体装置は、記憶装置としての機能を有する。
本実施の形態では、本発明の一態様である半導体装置の構成例について、実施の形態1とは異なる構成を説明する。なお実施の形態1と重複する説明については、説明を援用するものとして詳細な説明を省略する。
本実施の形態では、本発明の一態様である半導体装置の構成例について、実施の形態1および実施の形態2とは異なる構成を説明する。なお実施の形態1および実施の形態2と重複する説明については、説明を援用するものとして詳細な説明を省略する。
本実施の形態では、上記実施の形態1で説明した半導体装置に適用可能な回路の変形例について、図16A乃至図18Cを参照して説明する。
本実施の形態では、半導体装置10を有する集積回路(ICチップという)の一例を示す。半導体装置10は、複数のダイをパッケージ用の基板上に実装することで、1つのICチップとすることができる。図19Aおよび図19Bに、その構成の一例を示す。
本実施の形態では、実施の形態1に記載の半導体装置10におけるメモリ装置として機能するメモリ回路60を駆動するための回路を有する周辺回路20の詳細について説明する。
本実施の形態は、上記実施の形態に示す半導体装置などが組み込まれた電子部品および電子機器の一例を示す。
まず、半導体装置10等が組み込まれた電子部品の例を、図22Aおよび図22Bを用いて説明を行う。
次に、上記電子部品を備えた電子機器の例について図23を用いて説明を行う。
以上の実施の形態、及び実施の形態における各構成の説明について、以下に付記する。
Claims (11)
- 第1基板と、
第2基板に接して設けられた第1素子層と、
前記第2基板および前記第1素子層に設けられた第1貫通電極と、を有し、
前記第1素子層は、第1トランジスタ、第1電極、第2電極および第3電極を有し、
前記第1トランジスタは、チャネル形成領域に金属酸化物を有する半導体層を有し、
前記第1電極は、前記第2電極を介して前記第3電極と電気的に接続され、
前記第3電極は、前記第1素子層の表面に露出して設けられ、
前記第1貫通電極は、前記第2基板の表面に露出して設けられるとともに、前記第1電極と電気的に接続され、
前記第2基板および前記第1素子層は、前記第1基板の表面に対して垂直方向または概略垂直方向に積層して設けられ、
前記第1トランジスタは、前記第1貫通電極と重なる領域に設けられる、半導体装置。 - 第1基板と、
第2基板に接して設けられた第1素子層と、
前記第2基板および前記第1素子層に設けられた第1貫通電極と、を有し、
前記第1素子層は、第1メモリセル、第1電極、第2電極および第3電極を有し、
前記第1メモリセルは、第1トランジスタおよび容量を有し、
前記第1トランジスタは、チャネル形成領域に金属酸化物を有する半導体層を有し、
前記第1電極は、前記第2電極を介して前記第3電極と電気的に接続され、
前記第3電極は、前記第1素子層の表面に露出して設けられ、
前記第1貫通電極は、前記第2基板の表面に露出して設けられるとともに、前記第1電極と電気的に接続され、
前記第2基板および前記第1素子層は、前記第1基板の表面に対して垂直方向または概略垂直方向に積層して設けられ、
前記第1トランジスタおよび前記容量は、前記第1貫通電極と重なる領域に設けられる、半導体装置。 - 第1基板と、
第2基板に接して設けられた第1素子層と、
前記第2基板および前記第1素子層に設けられた第1貫通電極と、を有し、
前記第1素子層は、第1メモリセル、第1電極、第2電極および第3電極を有し、
前記第1メモリセルは、第1トランジスタおよび磁気トンネル接合素子を有し、
前記第1トランジスタは、チャネル形成領域に金属酸化物を有する半導体層を有し、
前記第1電極は、前記第2電極を介して前記第3電極と電気的に接続され、
前記第3電極は、前記第1素子層の表面に露出して設けられ、
前記第1貫通電極は、前記第2基板の表面に露出して設けられるとともに、前記第1電極と電気的に接続され、
前記第2基板および前記第1素子層は、前記第1基板の表面に対して垂直方向または概略垂直方向に積層して設けられ、
前記第1トランジスタおよび前記磁気トンネル接合素子は、前記第1貫通電極と重なる領域に設けられる、半導体装置。 - 請求項3において、
前記磁気トンネル接合素子は、
自由層と、絶縁層と、固定層と、の積層構造を有する、半導体装置。 - 第1基板と、
第2基板に接して設けられた第1素子層と、
前記第2基板および前記第1素子層に設けられた第1貫通電極と、を有し、
前記第1素子層は、複数の第1メモリセル、第1回路、第1電極、第2電極および第3電極を有し、
前記第1メモリセルおよび前記第1回路はそれぞれ、第1トランジスタを有し、
前記第1トランジスタは、チャネル形成領域に金属酸化物を有する半導体層を有し、
前記第1電極は、前記第2電極を介して前記第3電極と電気的に接続され、
前記第3電極は、前記第1素子層の表面に露出して設けられ、
前記第1貫通電極は、前記第2基板の表面に露出して設けられるとともに、前記第1電極と電気的に接続され、
前記第2基板および前記第1素子層は、前記第1基板の表面に対して垂直方向または概略垂直方向に積層して設けられ、
前記第1トランジスタは、前記第1貫通電極と重なる領域に設けられる、半導体装置。 - 請求項5において、
複数の前記第1メモリセルは、複数のビット線のいずれか一に電気的に接続され、
前記第1回路は、複数の前記ビット線のいずれか一を選択する機能と、選択された前記ビット線の電位を増幅して出力する機能と、を有する、半導体装置。 - 請求項5または請求項6において、
前記第1メモリセルは、ワード線に電気的に接続され、
前記第1回路は、前記ワード線に与える信号を増幅する機能を有する、半導体装置。 - 請求項1乃至7のいずれか一において、
前記第1基板は、第1トランジスタを駆動する機能を有する第1周辺回路が設けられる、半導体装置。 - 請求項1乃至8のいずれか一において、
第2電極は、前記第1トランジスタに接続される電極と同じ層に設けられる電極である、半導体装置。 - 請求項1乃至9のいずれか一において、
前記第2基板は、シリコン基板である、半導体装置。 - 請求項1乃至10のいずれか一において、
前記金属酸化物は、Inと、Gaと、Znと、を含む、半導体装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023523695A JPWO2022248985A1 (ja) | 2021-05-28 | 2022-05-19 | |
KR1020237044087A KR20240011766A (ko) | 2021-05-28 | 2022-05-19 | 반도체 장치 |
CN202280037153.6A CN117355943A (zh) | 2021-05-28 | 2022-05-19 | 半导体装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021090175 | 2021-05-28 | ||
JP2021-090175 | 2021-05-28 | ||
JP2021094341 | 2021-06-04 | ||
JP2021-094341 | 2021-06-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022248985A1 true WO2022248985A1 (ja) | 2022-12-01 |
Family
ID=84229546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2022/054652 WO2022248985A1 (ja) | 2021-05-28 | 2022-05-19 | 半導体装置 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPWO2022248985A1 (ja) |
KR (1) | KR20240011766A (ja) |
WO (1) | WO2022248985A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017038403A1 (ja) * | 2015-09-01 | 2017-03-09 | ソニー株式会社 | 積層体 |
JP2019012822A (ja) * | 2017-06-16 | 2019-01-24 | 株式会社半導体エネルギー研究所 | 半導体装置、および半導体装置の作製方法 |
JP2020145231A (ja) * | 2019-03-04 | 2020-09-10 | キオクシア株式会社 | 半導体装置およびその製造方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012256821A (ja) | 2010-09-13 | 2012-12-27 | Semiconductor Energy Lab Co Ltd | 記憶装置 |
-
2022
- 2022-05-19 KR KR1020237044087A patent/KR20240011766A/ko unknown
- 2022-05-19 JP JP2023523695A patent/JPWO2022248985A1/ja active Pending
- 2022-05-19 WO PCT/IB2022/054652 patent/WO2022248985A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017038403A1 (ja) * | 2015-09-01 | 2017-03-09 | ソニー株式会社 | 積層体 |
JP2019012822A (ja) * | 2017-06-16 | 2019-01-24 | 株式会社半導体エネルギー研究所 | 半導体装置、および半導体装置の作製方法 |
JP2020145231A (ja) * | 2019-03-04 | 2020-09-10 | キオクシア株式会社 | 半導体装置およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20240011766A (ko) | 2024-01-26 |
JPWO2022248985A1 (ja) | 2022-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI773719B (zh) | 半導體裝置 | |
US9852778B2 (en) | Semiconductor device, memory device, and electronic device | |
JP7462575B2 (ja) | 半導体装置 | |
JP7160894B2 (ja) | 記憶装置 | |
TW202030730A (zh) | 記憶體裝置 | |
WO2020201865A1 (ja) | 半導体装置 | |
WO2020234689A1 (ja) | 半導体装置 | |
JP7117322B2 (ja) | 半導体装置 | |
KR20210018091A (ko) | 촬상 장치 및 전자 기기 | |
WO2020245697A1 (ja) | 半導体装置 | |
WO2022248985A1 (ja) | 半導体装置 | |
KR20210127721A (ko) | 반도체 장치 및 상기 반도체 장치를 가지는 전기 기기 | |
CN117355943A (zh) | 半导体装置 | |
WO2022238798A1 (ja) | 半導体装置 | |
JP7171226B2 (ja) | 記憶装置 | |
CN117321761A (zh) | 半导体装置 | |
WO2024095113A1 (ja) | 半導体装置、及びその作製方法 | |
WO2020170069A1 (ja) | エラー検出機能を有する記憶装置、半導体装置、および、電子機器 | |
US11996132B2 (en) | Three transistor semiconductor device with metal oxide channel region, operation method thereof, and electronic device | |
WO2024116036A1 (ja) | 半導体装置 | |
WO2024028682A1 (ja) | 半導体装置及び電子機器 | |
WO2021001719A1 (ja) | 撮像装置および電子機器 | |
WO2024110830A1 (ja) | 半導体装置、表示装置、及び電子機器 | |
WO2023199182A1 (ja) | 半導体装置 | |
KR20230071125A (ko) | 촬상 장치 및 전자 기기 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22810733 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023523695 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18561961 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280037153.6 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 20237044087 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020237044087 Country of ref document: KR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22810733 Country of ref document: EP Kind code of ref document: A1 |