WO2014002852A1 - 半導体装置、半導体装置の製造方法、及び、電子機器 - Google Patents
半導体装置、半導体装置の製造方法、及び、電子機器 Download PDFInfo
- Publication number
- WO2014002852A1 WO2014002852A1 PCT/JP2013/066876 JP2013066876W WO2014002852A1 WO 2014002852 A1 WO2014002852 A1 WO 2014002852A1 JP 2013066876 W JP2013066876 W JP 2013066876W WO 2014002852 A1 WO2014002852 A1 WO 2014002852A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- semiconductor substrate
- opening
- layer
- semiconductor device
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 382
- 238000004519 manufacturing process Methods 0.000 title claims description 74
- 239000000758 substrate Substances 0.000 claims abstract description 215
- 239000010410 layer Substances 0.000 claims description 345
- 238000000034 method Methods 0.000 claims description 65
- 239000011241 protective layer Substances 0.000 claims description 62
- 239000004020 conductor Substances 0.000 claims description 57
- 238000005530 etching Methods 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 6
- 239000011229 interlayer Substances 0.000 description 27
- 238000001312 dry etching Methods 0.000 description 25
- 238000003384 imaging method Methods 0.000 description 21
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 239000010949 copper Substances 0.000 description 17
- 230000004888 barrier function Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 15
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 8
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 8
- 229920005591 polysilicon Polymers 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 238000001459 lithography Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 238000011109 contamination Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910004129 HfSiO Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/065—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L27/00
- H01L25/0657—Stacked arrangements of devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76805—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics the opening being a via or contact hole penetrating the underlying conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76898—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics formed through a semiconductor substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/481—Internal lead connections, e.g. via connections, feedthrough structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/50—Multistep manufacturing processes of assemblies consisting of devices, each device being of a type provided for in group H01L27/00 or H01L29/00
-
- 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
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14632—Wafer-level processed structures
-
- 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
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14634—Assemblies, i.e. Hybrid structures
-
- 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
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14636—Interconnect structures
-
- 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
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/14687—Wafer level processing
-
- 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
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/1469—Assemblies, i.e. hybrid integration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32135—Disposition the layer connector connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/32145—Disposition the layer connector connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being stacked
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2225/00—Details relating to assemblies covered by the group H01L25/00 but not provided for in its subgroups
- H01L2225/03—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00
- H01L2225/04—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers
- H01L2225/065—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers the devices being of a type provided for in group H01L27/00
- H01L2225/06503—Stacked arrangements of devices
- H01L2225/06541—Conductive via connections through the device, e.g. vertical interconnects, through silicon via [TSV]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2225/00—Details relating to assemblies covered by the group H01L25/00 but not provided for in its subgroups
- H01L2225/03—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00
- H01L2225/04—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers
- H01L2225/065—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers the devices being of a type provided for in group H01L27/00
- H01L2225/06503—Stacked arrangements of devices
- H01L2225/06541—Conductive via connections through the device, e.g. vertical interconnects, through silicon via [TSV]
- H01L2225/06544—Design considerations for via connections, e.g. geometry or layout
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2225/00—Details relating to assemblies covered by the group H01L25/00 but not provided for in its subgroups
- H01L2225/03—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00
- H01L2225/04—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers
- H01L2225/065—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers the devices being of a type provided for in group H01L27/00
- H01L2225/06503—Stacked arrangements of devices
- H01L2225/06548—Conductive via connections through the substrate, container, or encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present technology relates to a semiconductor device having a through electrode on a semiconductor substrate, a method for manufacturing the semiconductor device, and an electronic apparatus including the semiconductor device.
- a semiconductor device in which different types of devices are bonded to each other has been proposed to include a through electrode that passes through the base of the upper chip and is connected to the electrode of the lower base (for example, see Patent Document 1).
- a first through electrode that penetrates the upper chip-side base and is connected to the upper chip-side electrode pad is formed.
- a second through electrode that penetrates the base body on the upper chip side and is connected to the electrode pad on the lower chip side is formed. Then, wirings are connected between different types of chips by damascene that connects the first through electrode and the second through electrode.
- the reliability of the semiconductor device and the electronic device is required to be improved by improving the reliability of the through electrode, the insulating property, the barrier property, and the like.
- This technology provides highly reliable semiconductor devices and electronic devices.
- the semiconductor device of the present technology includes a first semiconductor substrate and a second semiconductor substrate bonded to the first surface side of the first semiconductor substrate. And the penetration electrode formed penetrating from the second surface side of the first semiconductor substrate to the wiring layer on the second semiconductor substrate, and the insulating layer surrounding the periphery of the penetration electrode formed in the first semiconductor substrate Is provided.
- An electronic apparatus according to the present technology includes the semiconductor device and a signal processing circuit that processes an output signal of the semiconductor device.
- a method for manufacturing a semiconductor device includes a step of forming an insulating layer surrounding a position where a through electrode is formed on a first surface of a first semiconductor substrate, and a first surface side of the first semiconductor substrate. And bonding the second semiconductor substrate. Further, within the range surrounded by the insulating layer, a step of forming an opening that penetrates from the second surface side of the first semiconductor substrate to the wiring layer on the second semiconductor substrate, and a through electrode is formed in the opening The process of carrying out.
- the insulating layer surrounding the through electrode is formed in the first semiconductor substrate. For this reason, it is possible to ensure insulation between the through electrode and the first semiconductor substrate without forming an insulating layer on the inner surface of the opening where the through electrode is formed. Furthermore, since the side surface of the through electrode is not covered with the insulating layer, connection reliability in the wiring layer can be ensured. Therefore, the reliability of the semiconductor device provided with the through electrode is improved. Further, the reliability of the electronic device having this semiconductor device is improved.
- a highly reliable semiconductor device and electronic device can be provided.
- FIG. 3 is a plan layout view around the through electrode of the semiconductor device of the first embodiment. It is sectional drawing which shows the structure of the semiconductor device of 1st Embodiment.
- a and B are manufacturing process diagrams of the semiconductor device of the first embodiment.
- C and D are manufacturing process diagrams of the semiconductor device of the first embodiment.
- E and F are manufacturing process diagrams of the semiconductor device of the first embodiment.
- G and H are manufacturing process diagrams of the semiconductor device of the first embodiment.
- a and B are manufacturing process diagrams of the semiconductor device of the first embodiment. It is sectional drawing which shows the structure of the semiconductor device of 2nd Embodiment.
- FIG. 4 is a graph showing a relationship between an inclination angle of an opening of a first electrode pad 16 and a contact area. It is a figure which shows the structure of the 1st electrode pad for calculating
- F and G are manufacturing process diagrams of the semiconductor device of the second embodiment.
- H and I are manufacturing process diagrams of the semiconductor device of the second embodiment.
- E and F are manufacturing process diagrams of the semiconductor device of the third embodiment.
- G and H are manufacturing process diagrams of the semiconductor device of the third embodiment.
- I and J are manufacturing process diagrams of the semiconductor device of the third embodiment. It is sectional drawing which shows the structure of the semiconductor device of 4th Embodiment. It is sectional drawing which shows the structure of the modification of the semiconductor device of 4th Embodiment. It is sectional drawing which shows the structure of the other modification of the semiconductor device of 4th Embodiment.
- a and B are manufacturing process diagrams of the semiconductor device of the fourth embodiment.
- C is a manufacturing process diagram of the semiconductor device of the fourth embodiment.
- FIG. D and E are manufacturing process diagrams of the semiconductor device of the fourth embodiment.
- F is a manufacturing process diagram of the semiconductor device of the fourth embodiment.
- FIG. 1 shows a schematic configuration of a semiconductor device including the through electrode according to the present embodiment.
- FIG. 1 is a cross-sectional view of a semiconductor device in the vicinity of a region where a through electrode is formed. In FIG. 1, only a schematic configuration near the formation region of the through electrode is shown, and illustration of each configuration of the semiconductor substrate and each configuration provided around the through electrode is omitted.
- the semiconductor device has a configuration in which a first chip 10 and a second chip 20 are bonded together.
- the first chip 10 includes a first semiconductor substrate 11 and a wiring layer 12 formed on one surface (first surface) of the first semiconductor substrate 11.
- the second chip 20 includes a second semiconductor substrate 21 and a wiring layer 22 formed on the second semiconductor substrate 21.
- the first chip 10 and the second chip 20 are bonded together with the wiring layers 12 and 22 facing each other.
- a bonding surface 25 is formed on the surfaces of the wiring layers 12 and 22.
- the wiring layer 12 of the first semiconductor substrate 11 constitutes a multilayer wiring layer composed of a plurality of conductive layers constituting wirings, electrodes and the like, and an interlayer insulating layer that insulates the conductor layers.
- the first electrode pad 16 made of one conductor layer among the plurality of conductor layers is shown in the interlayer insulating layer 18.
- protective layers 13 and 14 made of an insulating layer are provided on the other surface (second surface) of the first semiconductor substrate 11.
- the protective layer 13 is provided so as to cover the entire surface on the second surface of the first semiconductor substrate 11 except for a position where a through electrode 17 described later is provided.
- the protective layer 14 is provided on the entire surface covering the exposed surface of the through electrode 17 and the protective layer 13.
- the wiring layer 22 of the second semiconductor substrate 21 constitutes a multilayer wiring layer composed of a plurality of conductor layers constituting wirings, electrodes and the like, and an interlayer insulating layer that insulates between the conductor layers.
- the second electrode pad 23 made of one conductor layer among the plurality of conductor layers is shown in the interlayer insulating layer 24.
- the first electrode pad 16 and the second electrode pad 23 are connected to wirings (not shown), and are connected to various circuit elements in the semiconductor device.
- the semiconductor device shown in FIG. 1 includes a through electrode 17 that penetrates from the second surface of the first semiconductor substrate 11 to the wiring layer 12, the bonding surface 25, and the second electrode pad 23 of the wiring layer 22.
- the through electrode 17 is formed in an opening that penetrates the protective layer 13, the first semiconductor substrate 11, and the wiring layers 12 and 22.
- the side surface of the through electrode 17 is connected to the inner side surface of the opening of the first electrode pad 16.
- the bottom surface of the through electrode 17 is connected to the surface of the second electrode pad 23.
- the through electrode 17 electrically connects the first electrode pad 16 and the second electrode pad 23 of the wiring layer 12.
- an insulating layer 15 is provided at the interface of the first semiconductor substrate 11 that is in contact with the through electrode 17.
- the through electrode 17 penetrates the protective layer 13 on the second surface of the first semiconductor substrate 11, and the end surface is exposed on the surface of the protective layer 13.
- a protective layer 14 is provided so as to cover the upper surface of the through electrode 17 and the protective layer 13.
- the insulating layer 15 is formed in the first semiconductor substrate 11. That is, no insulating layer is formed on the inner surface of the opening provided in the first semiconductor substrate 11 in order to form the through electrode 17.
- the insulation between the through electrode 17 and the first semiconductor substrate 11 is ensured without forming an insulating layer in the opening. can do.
- an insulating layer is not formed on the inner surface of the opening provided in the wiring layers 12 and 22 in order to form the through electrode 17. Even if no insulating layer is formed in the opening, insulation between the through electrode 17 and the wiring provided in the wiring layers 12 and 22 is ensured by the interlayer insulating layers 18 and 24 constituting the wiring layers 12 and 22. can do. Furthermore, in the wiring layers 12 and 22, since an insulating layer is not provided in the opening for the through electrode 17, any wiring in the wiring layers 12 and 22, a conductor layer such as an electrode pad, the side surface of the through electrode 17, The bottom surface can be connected.
- FIG. 2 shows a planar arrangement of the through electrode 17, the insulating layer 15, and the first electrode pad 16 as viewed from the second surface side of the first semiconductor substrate 11.
- An insulating layer 15 is formed so as to surround the through electrode 17.
- the through electrode 17 and the first semiconductor substrate 11 are disconnected from each other by surrounding the entire through electrode 17 with the insulating layer 15.
- the first electrode pad 16 is formed in a wider area than the through electrode 17 in the wiring layer 12. And as shown in FIG. 1, the opening is formed in the center part in which the penetration electrode 17 is provided.
- the insulating layer 15 is disposed between the through electrode 17 and the first electrode pad 16, but the first electrode pad 16 extends below the insulating layer 15 and is connected to the through electrode 17. Has been.
- the first semiconductor substrate 11 and the second semiconductor substrate 21 for example, a semiconductor substrate such as a silicon substrate, a compound semiconductor, and a semiconductor substrate applied to other general semiconductor devices can be used.
- the through electrode 17, the first electrode pad 16, and the second electrode pad 23 are also composed of a conductor layer applied to a general semiconductor device.
- the through electrode 17 and the first electrode pad 16 are made of Cu
- the second electrode pad 23 is made of Al.
- the interlayer insulating layers 18 and 24 and the protective layers 13 and 14 are made of an insulating material such as an oxide film (SiO) or a nitride film (SiN), for example.
- the width of the insulating layer 15 formed in the first semiconductor substrate 11 is preferably in the range of 50 nm to 1000 nm. If the thickness is 50 nm or less, it is difficult to ensure insulation between the through electrode 17 and the first semiconductor substrate 11. On the other hand, when the thickness is 1000 nm or more, the time required for embedding the insulating layer 15 becomes long and the productivity is lowered. Furthermore, there is a risk that slits are generated in the insulating layer 15 and that the insulating layer 15 is entirely etched by a chemical solution such as hydrofluoric acid used in the thinning process of the first semiconductor substrate 11.
- the insulating layer 15 may be any material that can be embedded in a groove having a width of 50 nm to 1000 nm formed by dry etching, such as a nitride film (SiN), an oxide film (SiO), or a combination of SiN and polysilicon. .
- FIG. 3 shows the relationship between the width of the through electrode 17 and the opening width of the insulating layer 15 and the first electrode pad 16.
- the inner length of the insulating layer 15 formed on the first semiconductor substrate 11 is A.
- the width of the opening of the through electrode 17 is B.
- the opening width of the first electrode pad 16 is C.
- the opening width C of the first electrode pad 16 is preferably equal to or smaller than the opening B of the through electrode 17.
- the opening width C of the first electrode pad 16 is larger than the opening B of the through electrode 17, it becomes difficult to contact the first electrode pad 16 on the side surface of the through electrode 17, and it becomes difficult to ensure conductivity.
- the second chip 20 has a second width when the opening is formed by dry etching in the formation process of the through electrode 17.
- the electrode pad 23 cannot be etched.
- the difference between the opening width C and the opening B is 1 ⁇ m or less. That is, the relationship between the opening width C of the first electrode pad 16 and the opening B of the through electrode 17 is preferably (B-1 ⁇ m) ⁇ C ⁇ B.
- the length A inside the insulating layer 15 is larger than the opening B of the through electrode 17. If the inner length A of the insulating layer 15 is smaller than the opening width B of the through electrode 17, the second electrode pad 23 of the second chip 20 is formed when the opening is formed by dry etching in the formation process of the through electrode 17. There is a possibility that etching cannot be performed. Further, the difference between the length A inside the insulating layer 15 and the opening B of the through electrode 17 is preferably smaller than 0.5 ⁇ m. By making the difference smaller than 0.5 ⁇ m, the seed layer can be prevented from being disconnected when electrolytic plating is performed in the opening in the process of forming the through electrode 17, and the plating property of the through electrode 17 is improved. . That is, the relationship between the opening B of the through electrode 17 and the inner length A of the insulating layer 15 is preferably (B ⁇ 0.5 ⁇ m) ⁇ A.
- the through electrode 17 is formed in a region surrounded by the insulating layer 15 in the first semiconductor substrate 11.
- the insulating layer 15 surrounding the through electrode 17 in the first semiconductor substrate 11 is not provided. That is, in the wiring layers 12 and 22, the through electrode 17 is in direct contact with the interlayer insulating layers 18 and 24 that form the wiring layers 12 and 22.
- the side surface of the through electrode 17 is not covered with an insulating layer other than the interlayer insulating layers 18 and 24 in the wiring layers 12 and 22, wirings and electrodes provided on the wiring layers 12 and 22 on the side surface of the through electrode 17. It is possible to make an electrical connection directly to a conductor layer such as.
- the through electrode 17 having the above-described configuration is not in contact with the semiconductor substrate by sandwiching the insulating layer, and can be in direct contact with the interlayer insulating layer and the conductor layer in the wiring layer.
- the conventional through electrode since the insulating layer is continuously formed around the through electrode from the surface of the semiconductor substrate to the wiring layer, the side surface of the through electrode and the conductor layer cannot be directly connected in the wiring layer. .
- the connection between the first electrode pad 16 of the first chip 10 and the second electrode pad 23 of the second chip 20 is made by one through electrode 17. It can be carried out. For this reason, the process for forming a penetration electrode can be shortened. Further, since the number of through electrodes can be reduced, the degree of freedom in design can be improved by reducing the area occupied by the through electrodes. Furthermore, an increase in wiring capacity can be prevented by reducing the number of through electrodes.
- a reaction between the through electrode and the semiconductor substrate occurs in a portion where the barrier metal is thin in the annealing or sintering process after embedding the through electrode.
- a thermal history of 400 ° C. or higher is applied in an annealing or sintering process, a silicidation reaction occurs between Si constituting the semiconductor substrate and Cu constituting the through electrode.
- the insulating layer 15 is formed on the side surface of the through electrode 17. For this reason, reaction such as silicidation reaction between the through electrode 17 and the first semiconductor substrate 11 can be suppressed. Further, in the wiring layers 12 and 22, since the through electrode 17 and the interlayer insulating layer are in contact with each other, no silicidation reaction occurs. For this reason, even when a thermal history of 400 ° C. or higher is applied in the annealing or sintering process, reactions such as silicidation reactions of the through electrodes 17 that reduce the reliability of the wiring can be suppressed. For this reason, it is possible to improve both the reliability of the through electrode 17 with respect to the heat treatment and the improvement of the transistor characteristics by the sintering process.
- a barrier metal layer (not shown) is formed on the side and bottom surfaces of the through electrode 17 in order to prevent diffusion into the insulating layer 15 and the interlayer insulating layers 18 and 24. The Even when the barrier metal layer is formed, the first electrode pad 16 and the second electrode pad 23 are electrically connected through the barrier metal layer as described above.
- the shape of the through electrode and the insulating layer in a planar arrangement is circular.
- the shape is not limited to this shape, and may be any shape such as a rectangular shape or other polygonal shapes.
- the shape of the first electrode pad is a shape provided with an opening having the same shape as the through electrode, the shape of the first electrode pad is not particularly limited as long as it can be connected to the through electrode. .
- it is good also as a wiring shape extended only to one direction from the connection part with the side surface of a penetration electrode.
- the shape in which the opening having the same shape as the through electrode is provided can be configured to contact the first electrode pad on all side surfaces of the through electrode, and the connection reliability between the through electrode and the first electrode pad is improved.
- the hard mask layer 31 is formed on the first surface of the first semiconductor substrate 11, and the insulating layer 15 is formed on the first surface side surface of the first semiconductor substrate 11.
- a hard mask layer 31 made of SiO 2 , SiN, or the like is formed on the first surface of the first semiconductor substrate 11.
- the resist is patterned by photolithography.
- the resist is formed in a pattern that opens the shape of the insulating layer 15 formed on the first semiconductor substrate 11.
- the hard mask layer 31 is dry-etched using the patterned resist as a mask. After dry etching, the resist is removed and washed.
- the surface of the first semiconductor substrate 11 is opened by dry etching to form an opening (groove). Thereafter, a nitride film (SiN), an oxide film (SiO), a combination of SiN and polysilicon, or the like is embedded in the formed opening to form the insulating layer 15.
- a nitride film (SiN), an oxide film (SiO), a combination of SiN and polysilicon, or the like is embedded in the formed opening to form the insulating layer 15.
- the opening of the first semiconductor substrate 11 for forming the insulating layer 15 is formed with a width in the range of 50 nm to 1000 nm, for example. If the thickness is 50 nm or less, it is difficult to ensure insulation between the through electrode 17 and the first semiconductor substrate 11. If it is 1000 nm or more, it takes a long time to fill the insulating layer 15. Furthermore, there is a risk that a slit is generated in the insulating layer 15 and that the insulating layer 15 is entirely etched by a chemical solution used in the thinning process of the first semiconductor substrate 11, for example, hydrofluoric acid.
- the depth at which the insulating layer 15 is formed is equal to or greater than the thickness after the first semiconductor substrate 11 is thinned.
- the insulating layer 15 is formed in the entire area of the first semiconductor substrate 11 in the depth direction.
- the insulating layer 15 may be any material that can be embedded in the opening having a width of 50 nm to 1000 nm formed by dry etching.
- a method capable of embedding in a processed opening such as P-CVD or spin coating may be used as a method for embedding the insulating layer 15.
- the wiring layer 12 is formed on the first semiconductor substrate 11.
- a circuit such as a transistor (not shown) is formed on the first surface of the first semiconductor substrate 11.
- the wiring layer 12 is formed with a multilayer wiring layer composed of a plurality of conductor layers and an interlayer insulating layer.
- the first electrode pad 16 made of at least one conductor layer and the interlayer insulating layer 18 made of at least two layers are formed.
- the first electrode pad 16 is formed with an opening having the same shape as the through electrode 17.
- the opening width of the first electrode pad 16 is formed so as to satisfy, for example, the relationship between the opening width C of the first electrode pad 16 and the opening portion B of the through electrode 17, that is, (B-1 ⁇ m) ⁇ C ⁇ B. To do.
- the surface of the wiring layer 12 is planarized using a CMP method or the like to form a bonding surface 25.
- CMP is generally performed under conditions used for manufacturing semiconductor devices. For example, a CMP pad in which a soft material and a hard material are laminated, a slurry (chemical solution), or the like, which is generally used for manufacturing a semiconductor device, is used.
- a second semiconductor substrate 21 on which a predetermined circuit to be the second chip 20 is formed in advance is prepared.
- the second semiconductor substrate 21 includes a second electrode pad 23 in the wiring layer 22 corresponding to the formation position of the through electrode 17. Further, a flattened bonding surface 25 is formed on the surface of the wiring layer 22 in the same manner as the wiring layer 12 of the first semiconductor substrate 11. Then, as shown in FIG. 5C, the first semiconductor substrate 11 is inverted so that the surface of the wiring layer 12 of the first semiconductor substrate 11 faces the surface of the wiring layer 22 of the second semiconductor substrate 21. Then, the wiring layers 12 and 22 of the first semiconductor substrate 11 and the second semiconductor substrate 21 are brought into contact with each other by pressing with a pin, and bonding is performed.
- the bonding is performed by pressing the centers of the first semiconductor substrate 11 and the second semiconductor substrate 21 so that the first semiconductor substrate 11 and the second semiconductor substrate 21 face each other without performing pretreatment immediately after CMP.
- a pin whose contact surface to the first semiconductor substrate 11 and the second semiconductor substrate 21 is a circle is used.
- the load to be pressed is, for example, 12N.
- the second surface side of the first semiconductor substrate 11 is polished to thin the first semiconductor substrate 11.
- the first semiconductor substrate 11 is polished to a predetermined thickness at which the insulating layer 15 is exposed from the second surface side.
- a protective layer 13 is formed by forming a film such as SiN or SiO 2 on the second surface of the first semiconductor substrate 11 after the thinning.
- an opening 32 is formed in a portion surrounded by the insulating layer 15 of the first semiconductor substrate 11.
- the opening 32 can be formed in the same manner as the step of forming the opening (groove) for embedding the insulating layer 15 described above.
- FIG. 8A after forming a resist pattern by photolithography on the protective layer 13, a hard mask pattern of the protective layer 13 is formed using this resist pattern, and dry etching of the first semiconductor substrate 11 is performed. Do.
- the relationship between the opening B of the through electrode 17 and the length A inside the insulating layer 15 formed in the first semiconductor substrate 11 is (B ⁇ 0.5 ⁇ m). ⁇ A is preferable. For this reason, the width of the opening formed in the protective layer 13 is smaller than the width inside the insulating layer 15. As a result, as shown in FIG. 8A, in the highly isotropic dry etching, the first semiconductor substrate 11A remains on the inner surface in the region surrounded by the insulating layer 15. If the first semiconductor substrate 11 ⁇ / b> A remains inside the insulating layer 15, a silicidation reaction occurs with the through electrode 17, and the reliability of the through electrode 17 decreases. For this reason, it is preferable to remove all of the first semiconductor substrate 11 inside the insulating layer 15.
- the first semiconductor substrate 11A is removed inside the insulating layer 15 by isotropic etching as shown in FIG. 8B, and dry etching is performed so that all the inner walls of the insulating layer 15 are exposed. Do. Thus, the opening 32 is formed so that the first semiconductor substrate 11 does not remain between the inside of the insulating layer 15 and the through electrode 17.
- openings from the wiring layer 12 of the first chip 10 below the opening 32 to the second electrode pads 23 provided on the wiring layer 22 of the second chip 20 are opened by dry etching. To do.
- the opening 33 is formed.
- An opening 33 is formed in the opening of the first electrode pad 16.
- the opening width of the first electrode pad 16 and the width of the opening portion 33 are the same shape.
- the width of the opening 33 may be formed larger than the opening width of the first electrode pad 16.
- the opening 33 below the first electrode pad 16 is formed with the opening width of the first electrode pad 16 because the first electrode pad 16 serves as a mask.
- a conductor layer to be the through electrode 17 is embedded in the openings 32 and 33.
- a seed metal layer made of tantalum (Ta) and copper laminated film, Ti / Cu, TiW / Cu, or the like is formed in the openings 32 and 33 with a thickness of about 10 nm to 35 nm.
- the openings 32 and 33 are filled by electrolytic Cu plating to form the through electrode 17.
- the opening 33 is formed such that the width of the opening 33 on the first electrode pad 16 is larger than the opening width of the first electrode pad 16 from the above-mentioned relationship (B-1 ⁇ m) ⁇ C ⁇ B. It is preferable.
- the through electrode 17 is preferably formed in a shape in which the width on the first electrode pad 16 is larger than the width on the first electrode pad 16 or less. By adopting this shape, the connection reliability between the through electrode 17 and the first electrode pad 16 and the connection reliability between the first electrode pad 16 and the second electrode pad 23 through the through electrode 17 are ensured. Can do.
- the semiconductor device of this embodiment can be manufactured through the above steps.
- the semiconductor device may be separated into pieces by dicing the substrate in the wafer state after the above-described steps.
- the first semiconductor substrate 11 and the second semiconductor substrate 21 are bonded together in a state before separation (wafer state), but the first semiconductor substrate 11 is separated into pieces.
- the first chip 10 may be bonded onto the second semiconductor substrate 21 in a wafer state, or may be bonded after being singulated.
- the semiconductor device of the above-described embodiment can be applied to any electronic device that bonds two semiconductor members together to perform wiring bonding, such as a solid-state imaging device, a semiconductor memory, and a semiconductor logic device (IC or the like).
- FIG. 9 shows a schematic configuration of a semiconductor device including the through electrode according to the present embodiment.
- FIG. 9 is a cross-sectional view of the semiconductor device in the vicinity of the region where the through electrode is formed.
- FIG. 9 only a schematic configuration in the vicinity of the through electrode formation region is shown, and illustration of each configuration of the semiconductor substrate and each configuration provided around the through electrode is omitted.
- the same reference numerals are given to the same components as those of the semiconductor device of the first embodiment described above, and detailed description thereof is omitted.
- the semiconductor device has a configuration in which a first chip 10 and a second chip 20 are bonded together.
- a through electrode 17 that penetrates from the second surface of the first semiconductor substrate 11 to the second electrode pad 23 is provided.
- the through electrode 17 is formed in an opening that penetrates the protective layer 13, the first semiconductor substrate 11, and the wiring layers 12 and 22.
- the first chip 10 has the same configuration as that of the first embodiment except for the configuration of the first electrode pad 16.
- the second chip 20 has the same configuration as that of the first embodiment described above.
- the inner surface of the opening of the first electrode pad 16 is formed with a large opening on the second surface side of the first chip and a small opening on the first surface side.
- the first electrode pad 16 is provided in a tapered shape so that the opening on the first surface side is reduced on the surface where the first electrode pad 16 and the through electrode 17 are in contact with each other.
- the shape of the opening of the first electrode pad 16 may be a continuously decreasing shape as shown in FIG. 9, and from the second surface side of the first chip to the middle of the opening as shown in FIG. May have the same size, and a taper may be provided from the middle of the opening to the first surface side.
- FIG. 10 only the configuration around the first electrode pad 16 is enlarged from the configuration of the semiconductor device shown in FIG.
- the contact area between the through electrode 17 and the first electrode pad 16 is increased. Since the opening becomes small on the first surface side of the first chip 10, contact failure due to the opening position deviation hardly occurs. Thus, the increase in the contact area can reduce the contact resistance between the electrodes and improve the reliability of the semiconductor device.
- the through electrode 17 preferably has a larger cross-sectional area on the second surface side of the first electrode pad 16 than an opening on the first surface side of the first electrode pad 16.
- FIG. 11 shows the relationship between the inclination angle ⁇ of the inner surface of the opening of the first electrode pad 16 and the contact area, and the contact angle ⁇ and the increase in the contact area.
- the amount of increase in the contact area is a comparison with the configuration in which the inner surface of the first electrode pad 16 is vertical (first embodiment), and the amount of increase is indicated in multiples from the contact area when the inner surface is vertical. Yes.
- the relationship shown in FIG. 11 is a numerical value in the configuration shown in FIG. In the configuration shown in FIG. 12, the through electrode 17 has a circular shape with an opening diameter (diameter) of 3 ⁇ m, and the thickness of the first electrode pad 16 is 0.2 ⁇ m.
- the contact area between the through electrode 17 and the first electrode pad 16 increases as the inclination angle of the opening of the first electrode pad 16 decreases.
- the contact area is 1.5 times or more that of the configuration of the first embodiment.
- the contact area becomes twice or more that of the configuration of the first embodiment.
- the coverage of the barrier metal layer is improved as compared with the configuration in which the inner surface of the first electrode pad 16 is vertical (first embodiment). For this reason, the thickness of the barrier metal layer to be formed can be reduced, and the contact resistance between the through electrode 17 and the first electrode pad 16 can be reduced.
- Second Embodiment of Semiconductor Device Manufacturing Method> Next, an example of a method for manufacturing the semiconductor device of the second embodiment will be described. In the following description of the manufacturing method, only the manufacturing method of the through electrode of the semiconductor device shown in FIG. 9 and its peripheral configuration is shown, and the description of the manufacturing method of the configuration of other elements and wirings is omitted. About a semiconductor substrate, a wiring layer, other various transistors, various elements, etc., it can produce by a conventionally well-known method. The detailed description of the configuration, operation, and the like described in the configuration and manufacturing method of the semiconductor device of the first embodiment is omitted.
- the portion surrounded by the insulating layer 15 of the first semiconductor substrate 11 shown in FIG. 6E is removed by the same method as in the first embodiment, and the region surrounded by the insulating layer 15 of the first semiconductor substrate 11 is removed.
- the process up to the step of forming the opening 32 in the portion is performed.
- the opening 33A is formed.
- the opening width at this time is preferably larger than the opening of the first electrode pad 16.
- the first electrode pad 16 needs to be exposed from the peripheral edge of the bottom of the opening 33A. In particular, it is preferable that the inside of the first electrode pad 16 is exposed to the entire periphery of the bottom of the opening 33A.
- the first electrode pad 16 exposed from the opening 33A and the interlayer insulating layer 18 inside the first electrode pad 16 are removed by dry etching.
- the opening 33 ⁇ / b> B is formed at a depth up to the upper end (bonding surface side) of the first electrode pad 16.
- the first electrode pad 16 and the interlayer insulating layer 18 are simultaneously removed, and the inner surface of the first electrode pad 16 is processed into an inclined surface.
- the first electrode pad 16 is also etched in the same manner as the interlayer insulating layer 18 under the dry etching conditions of an insulating layer such as a general oxide film that forms the interlayer insulating layer 18. For this reason, as in the first embodiment described above, the inner surface of the opening of the first electrode pad 16 has a vertical shape.
- Ar is used in the step of removing the first electrode pad 16 and the interlayer insulating layer 18 shown in FIG. 13G. Apply unused machining conditions.
- Ar is used in the dry etching, the sputtering effect on the metal such as Cu constituting the first electrode pad 16 is weakened, and the selection ratio between the first electrode pad 16 and the interlayer insulating layer 18 is increased.
- dry etching proceeds so that the inner surface of the opening of the first electrode pad 16 is inclined.
- the shape of the inclined surface such as the inclination angle can be generally controlled by a specific amount of oxygen used for dry etching.
- an opening from the upper end (bonding surface side) of the first electrode pad 16 to the second electrode pad 23 provided on the wiring layer 22 of the second chip 20 is opened by dry etching.
- This dry etching is performed under conditions that do not affect the inclined shape of the opening of the first electrode pad 16.
- the opening 33 can be formed from the first electrode pad 16 to the second electrode pad 23 with the opening width of the upper end (bonding surface side) of the first electrode pad 16.
- the protective layer 14 is formed. This step can be performed by the same method as the steps shown in FIGS. 7G and 7H in the semiconductor device manufacturing method of the first embodiment described above.
- the above manufacturing method includes a step of processing the inner surface of the opening of the first electrode pad 16 into an inclined surface.
- the area of the inner surface of the opening of the first electrode pad 16 can be increased.
- a barrier metal layer that becomes an interface between the first electrode pad 16 and the through electrode 17 as compared with the configuration in which the inner surface of the first electrode pad 16 is vertical (first embodiment) due to the increase in the connection area.
- the adhesiveness between the first electrode pad 16 and the through electrode 17 is improved, and the connection reliability is improved.
- the coverage of a barrier metal layer improves because the area of a barrier metal layer becomes large. For this reason, the thickness of the barrier metal layer to be formed can be reduced, and the contact resistance between the through electrode 17 and the first electrode pad 16 can be reduced.
- the contact resistance between the electrodes can be reduced and the reliability of the semiconductor device can be improved. It becomes possible. Therefore, a semiconductor device having high performance, high function, and high reliability can be provided.
- FIG. 15 shows a schematic configuration of a semiconductor device including the through electrode according to the present embodiment.
- FIG. 15 is a cross-sectional view of the semiconductor device in the vicinity of the region where the through electrode is formed.
- FIG. 15 only a schematic configuration near the formation region of the through electrode is shown, and illustration of each configuration of the semiconductor substrate and each configuration provided around the through electrode is omitted.
- the same reference numerals are given to the same components as those of the semiconductor device of the first embodiment described above, and detailed description thereof is omitted.
- the semiconductor device has a configuration in which the first chip 10 and the second chip 20 are bonded together.
- a through electrode 17 that penetrates from the second surface of the first semiconductor substrate 11 to the second electrode pad 23 is provided.
- the through electrode 17 is formed in an opening that penetrates the protective layer 13, the first semiconductor substrate 11, and the wiring layers 12 and 22.
- the first chip 10 has the same configuration as that of the first embodiment except for the configuration of the insulating layer 15.
- the second chip 20 has the same configuration as that of the first embodiment described above.
- the material of the insulating layer 15 is made of the same material as that of the interlayer insulating layer 18 constituting the wiring layer 12.
- it is composed of a single layer or a stacked layer of a silicon oxide film and a silicon nitride film.
- the opening diameter on the first surface side of the first semiconductor substrate 11 and the opening diameter of the first electrode pad 16 are substantially the same.
- the opening diameter of the first electrode pad 16 is larger than the diameter of the through electrode 17 in contact with the second electrode pad 23.
- the contact area between the through electrode 17 and the first electrode pad 16 can be increased. For this reason, even when the element is miniaturized, the connection reliability between the through electrode 17 and the first electrode pad 16 can be improved.
- the process up to thinning the first semiconductor substrate 11 is performed by polishing the second surface side of the first semiconductor substrate 11 shown in FIG. 5D by the same method as in the first embodiment.
- the insulating layer 15 is formed so that the inner diameter of the insulating layer 15 is smaller than the opening diameter in which the through electrode 17 is finally formed.
- a resist 34 is formed on the second surface of the first semiconductor substrate 11, and a hole for forming the through electrode 17 is patterned by photolithography. At this time, an opening having a diameter larger than the inner diameter of the insulating layer 15 is formed in the resist 34.
- the protective layer 13 is opened from the opening of the resist 34 by dry etching. Thereby, the first semiconductor substrate 11 and a part of the insulating layer 15 are exposed on the same surface.
- the insulating layer 15 exposed from the opening of the resist 34 and the interlayer insulating layer 18 are simultaneously etched to form the opening 33A. Accordingly, in FIG. 17G, the shape of the opening 32 having a step difference between the inner diameter of the insulating layer 15 and the inner diameter of the resist 34 and the protective layer 13 is transferred to the opening 33A between the insulating layer 15 and the interlayer insulating layer 18. . Further, by continuing the etching, an opening 33 that opens to the second electrode pad 23 is formed as shown in FIG. 18I.
- the protective layer 14 is formed. This step can be performed by the same method as the steps shown in FIGS. 7G and 7H in the semiconductor device manufacturing method of the first embodiment described above.
- the opening 33 that opens to the second electrode pad 23 can be formed with good controllability by patterning the resist 34 by one lithography. That is, by forming the opening of the resist 34 larger than the inner diameter of the insulating layer 15, the entire surface of the first semiconductor substrate 11 in the insulating layer 15 can be exposed from the opening of the resist 34. For this reason, the remaining of the first semiconductor substrate 11 in the insulating layer 15 can be suppressed. Therefore, silicidation of the through electrode 17 in the insulating layer 15 can be prevented, and the reliability of the through electrode 17 is improved.
- the insulating layer 15 exposed from the opening of the resist 34 and the interlayer insulating layer 18 are simultaneously etched, so that the position of the first electrode pad 16 is almost the same as the opening of the resist 34 and the first semiconductor substrate 11. Are formed. Therefore, the inner diameter of the opening of the first electrode pad 16 can be increased, the contact area between the first electrode pad 16 and the through electrode 17 is increased, and the connection reliability between the first electrode pad 16 and the through electrode 17 is increased. Improves.
- the shape of the opening 32 having a step between the inner diameter of the insulating layer 15 and the inner diameter of the resist 34 and the protective layer 13 is transferred to the shape of the opening 33 immediately above the second electrode pad 23 by the above-described etching. .
- the bottom area of the through electrode 17 can be reduced as compared with the cross sectional area of the through electrode 17 in the first semiconductor substrate 11 and the cross sectional area of the through electrode 17 at the position of the first electrode pad 16. For this reason, even when the area of the second electrode pad 23 is reduced by miniaturization of the element, the connection between the through electrode 17 and the second electrode pad 23 is facilitated.
- FIG. 19 shows a schematic configuration of a semiconductor device including the through electrode according to the present embodiment.
- FIG. 19 is a cross-sectional view of the semiconductor device in the vicinity of the region where the through electrode is formed.
- FIG. 19 only a schematic configuration near the formation region of the through electrode is shown, and illustration of each configuration of the semiconductor substrate and each configuration provided around the through electrode is omitted.
- the same reference numerals are given to the same components as those of the semiconductor device of the first embodiment described above, and detailed description thereof is omitted.
- the semiconductor device has a configuration in which the first chip 10 and the second chip 20 are bonded together.
- a through electrode 17 that penetrates from the second surface of the first semiconductor substrate 11 to the second electrode pad 23 is provided.
- the through electrode 17 is formed in an opening that penetrates the protective layer 13, the first semiconductor substrate 11, and the wiring layers 12 and 22.
- the first chip 10 has the same configuration as that of the above-described first embodiment except for the configuration of the first electrode pad 16A and the electrode protection layer 35
- the second chip 20 has the same configuration as that of the above-described first embodiment. It is the same composition as.
- the first electrode pad 16A is formed of tungsten (W) or polysilicon.
- An electrode protective layer 35 is provided between the insulating layer 15 and the first electrode pad 16A.
- the electrode protection layer 35 is a layer that protects the first electrode pad 16A formed of, for example, tungsten or polysilicon from etching in an etching process during manufacturing.
- the electrode protective layer 35 is, for example, an oxide film is formed by SiO 2.
- the first electrode pad 16 is formed of Cu
- Cu release contamination
- processing in the etching is performed. It was slowing down.
- the step of forming the opening 33 includes a step of performing lithography and etching so as not to expose the first electrode pad 16 and a step of performing lithography and etching so as to expose the first electrode pad 16. It is conceivable to do it separately. However, when such a method is used, productivity decreases due to an increase in the number of steps.
- the electrode protection layer 35 is provided between the insulating layer 15 and the first electrode pad 16A, so that the first electrode pad 16A is combined with the wiring layer 12 in the etching for forming the opening 33. Etching can be prevented.
- the electrode protective layer 35 may be provided between the insulating layer 15 and the first electrode pad 16A, and the electrode protective layer 35 may not be in contact with the insulating layer 15 and the first electrode pad 16A.
- another layer may be provided between the electrode protective layer 35 and the insulating layer 15, and another layer may be provided between the electrode protective layer 35 and the first electrode pad 16A. Good.
- the shape of the first electrode pad 16A may be, for example, a shape in which an opening having the same shape as the through electrode 17 is provided, as in the first embodiment described above. Further, the shape of the first electrode pad 16A is not limited to the above-described shape as long as it can be connected to the through electrode 17. For example, a wiring shape that extends only in one direction from the connection portion with the side surface of the through electrode 17 may be used.
- the electrode protection layer 35 has a shape corresponding to the first electrode pad 16A, and may have any shape as long as it can protect the first electrode pad 16A.
- the first electrode pad 16A is made of a conductor such as tungsten or polysilicon, for example.
- the first electrode pad 16A can also be made of a metal gate material.
- the first electrode pad 16A may be composed of a titanium (Ti) -based or tantalum (Ta) -based conductor, and more specifically, may be composed of TiN or TaN.
- the electrode protective layer 35 is made of, for example, SiO 2 .
- the electrode protection layer 35 can also be made of a High-k material used for the gate oxide film.
- the electrode protection layer 35 may be composed of a hafnium (Hf) -based material or the like, and more specifically, may be composed of HfO 2 , HfSiO 2 , or HfSiON.
- the electrode protective layer 35 and the first electrode pad 16A are formed together with other oxide films and wirings in the step of forming the wiring layer 12. It is preferable. With this configuration, in this embodiment, the electrode protective layer 35 and the first electrode pad 16A can be formed without increasing the number of steps. Therefore, the electrode protection layer 35 is preferably formed of the same material as any oxide included in the wiring layer 12, and the first electrode pad 16 ⁇ / b> A includes any wiring or electrode included in the wiring layer 12. It is preferable to form with the same material.
- the present embodiment is not limited to the above example.
- the present embodiment may be configured as a semiconductor device as shown in FIGS. 20 and 21 are cross-sectional views of a semiconductor device in the vicinity of a region where a through electrode according to a modification of the present embodiment is formed.
- a wiring electrode 36 for electrically connecting the first electrode pad 16A and the wiring in the wiring layer 12 is further provided.
- the rest of the configuration excluding the wiring electrode 36 is the same as the configuration described with reference to FIG.
- the wiring electrode 36 is made of Cu, for example.
- the first electrode pad 16A can be electrically connected to a wiring (not shown) in the wiring layer 12 via the wiring electrode 36 formed of Cu having a smaller electrical resistance. Therefore, in the modification shown in FIG. 20, the connection reliability between the through electrode 17 and the wiring layer 12 can be further improved.
- the wiring electrode 36 formed of Cu is formed on the outer side of the opening side end of the first electrode pad 16A with respect to the center direction of the opening. Needless to say, the opening 33 is not exposed in the forming step.
- the opening width of the first electrode pad 16B made of tungsten or polysilicon is formed to be smaller than the opening width of the insulating layer 15, and penetrates into the opening.
- An electrode 17A is provided.
- the other configuration except for the first electrode pad 16B and the through electrode 17A is the same as the configuration described with reference to FIG.
- the first semiconductor substrate 11 up to the electrode protection layer 35 that protects the first electrode pad 16B is etched.
- the etching conditions are set appropriately, whereby the electrode protective layer 35 wiring layer 12 is formed using the first electrode pad 16B as a mask. , 22 are etched.
- the first electrode pad 16B can increase the contact area with the through electrode 17A, and thus can be reliably electrically connected to the through electrode 17A. Therefore, in the modification shown in FIG. 21, the connection reliability between the through electrode 17A and the first electrode pad 16B can be improved.
- the process up to the step of forming the insulating layer 15 in the first semiconductor substrate 11 shown in FIG. 4A is performed by the same method as in the first embodiment.
- the electrode protection layer 35 is formed on the insulating layer 15 on the first surface side of the first semiconductor substrate 11.
- the electrode protective layer 35 is preferably formed so that the opening-side end of the electrode protective layer 35 protrudes toward the center of the opening from the opening-side end of the insulating layer 15.
- the electrode protective layer 35 is formed in a ring shape, for example.
- the inner diameter of the electrode protective layer 35 is preferably smaller than the inner diameter of the opening on the electrode protective layer 35 side of the insulating layer 15. According to such a configuration, the electrode protection layer 35 according to the present embodiment more reliably protects the first electrode pad 16A from being etched during the etching in the step of forming the opening 33 described later. be able to.
- the electrode protection layer 35 may be formed, for example, in an element isolation process for isolating a transistor or the like formed on the first surface of the first semiconductor substrate 11.
- an element isolation method for example, various methods such as an STI (Shallow Trench Isolation) method, a LOCOS (Local Oxidation of Silicon) method, or an EDI (Expanding pheotide Design for Isolation) method can be used.
- the electrode protective layer 35 may be formed in the step of forming the interlayer insulating layer 18 in the wiring layer 12, and the electrode protective layer 35 may be formed in the step of forming the gate oxide film.
- the wiring layer 12 is formed on the first surface side of the first semiconductor substrate 11, and the bonding surface 25 is formed on the planarized wiring layer 12.
- the wiring layer 12 is a multilayer wiring layer composed of a plurality of conductor layers and an interlayer insulating layer, and includes a first electrode pad 16A.
- the first electrode pad 16A is formed on the electrode protection layer 35, for example.
- the width of the opening of the formed first electrode pad 16 ⁇ / b> A is preferably smaller than the width of the opening of the insulating layer 15 for connection with the through electrode 17.
- the first electrode pad 16A may be formed in a step of forming a wiring in the wiring layer 12, or may be formed in a step of forming a gate electrode that is a metal gate material.
- the first semiconductor substrate 11 and the second semiconductor substrate 12 are bonded and bonded, and the first semiconductor substrate 11 is further polished and thinned.
- This step can be performed by a method similar to that shown in FIGS. 5C and 5D in the semiconductor device manufacturing method of the first embodiment described above.
- the portion surrounded by the insulating layer 15 of the first semiconductor substrate 11 is removed by dry etching or the like to expose the inside of the insulating layer 15.
- an opening 32 is formed in a portion surrounded by the insulating layer 15 of the first semiconductor substrate 11.
- the electrode protection layer 35 made of SiO 2 has a high processing selectivity with respect to the first semiconductor substrate 11, the electrode protection layer 35 is not removed in the step of forming the opening 32 described above, and is positioned below the electrode protection layer 35.
- the first electrode pad 16A can be protected.
- the opening 33 is formed.
- the first electrode pad 16A existing in the center direction of the opening from the end of the insulating layer 15 on the opening side is also removed.
- the form is not limited to such illustration.
- the first electrode pad 16A is used as a mask without being removed, and the electrode protective layer 35, the wiring layers 12, 22 and the like are removed. It is also possible to do.
- the protective layer 14 is formed. This step can be performed by the same method as in FIGS. 7G and 7H in the method for manufacturing the semiconductor device of the first embodiment described above.
- the above manufacturing method includes the step of forming the electrode protection layer 35 between the insulating layer 15 and the first electrode pad 16A.
- the electrode protective layer 35 is formed such that the end of the electrode protective layer 35 on the opening side protrudes toward the center of the opening from the end of the insulating layer 15 on the opening side. .
- the first electrode pad 16A is etched in the step of forming the opening 33 by providing the electrode protective layer 35 between the insulating layer 15 and the first electrode pad 16A. Can be protected from. Therefore, tungsten, polysilicon, or the like, which is a conductor having a low processing selectivity with respect to the first semiconductor substrate 11, can be used as the first electrode pad 16A. Therefore, the semiconductor device according to the present embodiment can improve the productivity by eliminating the decrease in etching process speed due to Cu contamination and the decrease in productivity due to the increase in the number of processes.
- Solid-state imaging device an example in which the configuration of electrode bonding in the above-described embodiment is applied to a solid-state imaging device will be described.
- This solid-state imaging device can be applied to electronic devices such as a camera system such as a digital camera or a video camera, a mobile phone having an imaging function, or another device having an imaging function.
- a camera will be described as an example of a configuration of the electronic device.
- FIG. 19 shows a configuration example of a video camera that can capture still images or moving images.
- the camera 40 of this example includes a solid-state imaging device 41, an optical system 42 that guides incident light to the light receiving sensor unit of the solid-state imaging device 41, a shutter device 43 provided between the solid-state imaging device 41 and the optical system 42, And a drive circuit 44 for driving the imaging device 41. Furthermore, the camera 40 includes a signal processing circuit 45 that processes the output signal of the solid-state imaging device 41.
- the solid-state imaging device 41 includes the through electrode of the embodiment according to the present disclosure described above. Configurations and functions of other parts are as follows.
- the optical system (optical lens) 42 forms image light (incident light) from the subject on an imaging surface (not shown) of the solid-state imaging device 41. Thereby, signal charges are accumulated in the solid-state imaging device 41 for a certain period.
- the optical system 42 may be composed of an optical lens group including a plurality of optical lenses.
- the shutter device 43 controls the light irradiation period and the light shielding period of the incident light to the solid-state imaging device 41.
- the drive circuit 44 supplies drive signals to the solid-state imaging device 41 and the shutter device 43.
- the drive circuit 44 controls the signal output operation to the signal processing circuit 45 of the solid-state imaging device 41 and the shutter operation of the shutter device 43 by the supplied drive signal. That is, in this example, a signal transfer operation from the solid-state imaging device 41 to the signal processing circuit 45 is performed by a drive signal (timing signal) supplied from the drive circuit 44.
- the signal processing circuit 45 performs various signal processing on the signal transferred from the solid-state imaging device 41.
- the signal (video signal) that has been subjected to various signal processing is stored in a storage medium (not shown) such as a memory, or is output to a monitor (not shown).
- this indication can also take the following structures.
- (1) The first semiconductor substrate, the second semiconductor substrate bonded to the first surface side of the first semiconductor substrate, and the wiring layer on the second semiconductor substrate from the second surface side of the first semiconductor substrate.
- a semiconductor device comprising: a through electrode formed so as to penetrate; and an insulating layer surrounding the through electrode formed in the first semiconductor substrate.
- (2) The semiconductor device according to (1), wherein the wiring layer on the first surface of the first semiconductor substrate has a first conductor layer, and a side surface of the through electrode is connected to the first conductor layer.
- (3) The bottom of the through electrode is connected to a second conductor layer provided in a wiring layer on the second semiconductor substrate, and the first conductor layer and the second conductor layer are connected via the through electrode.
- the opening of the first conductor layer is formed such that the opening on the second surface side of the first semiconductor substrate is large and the opening on the first surface side of the first semiconductor substrate is small (4) or ( The semiconductor device according to 5).
- the semiconductor device according to (8) wherein an inclination angle of an inner surface of the opening of the first conductor layer is 40 ° or less.
- the electrode protective layer is formed of the same material as the oxide contained in the wiring layer on the first surface of the first semiconductor substrate, and the first conductor layer is a first layer of the first semiconductor substrate.
- the semiconductor device according to (10) which is formed of the same material as any of the wiring and the electrode included in the wiring layer on the surface.
- a method of manufacturing a semiconductor device including a through electrode penetrating a first semiconductor substrate, wherein an insulating layer is formed on a first surface of the first semiconductor substrate to surround a position where the through electrode is formed.
- a method for manufacturing a semiconductor device comprising: a step of forming an opening penetrating up to a wiring layer on a semiconductor substrate; and a step of forming a through electrode in the opening.
- the step of forming the opening after etching the first semiconductor substrate within a range surrounded by the insulating layer, the first semiconductor substrate remaining on the inner wall surface of the insulating layer is further etched.
- the manufacturing method of the semiconductor device as described in (12) which has a process to carry out.
- (14) forming a first conductor layer on the wiring layer on the first surface of the first semiconductor substrate; and forming the opening in the step of forming the opening.
- the method includes selectively etching the first semiconductor substrate within a range surrounded by the insulating layer and etching a part of the inner surface side of the insulating layer.
- a method for manufacturing a semiconductor device according to any one of the above. (16) forming a first conductor layer on the wiring layer on the first surface of the first semiconductor substrate, and forming an electrode protective layer between the insulating layer and the first conductor layer; The step of forming the opening includes a step of etching the first semiconductor substrate within a range surrounded by the insulating layer, and a step of etching from the electrode protective layer to the wiring layer on the second semiconductor substrate. (12) The manufacturing method of the semiconductor device as described in (12).
- the electrode protective layer is configured such that an end portion on the opening side of the electrode protective layer protrudes toward an opening center direction from an end portion on the opening side of the insulating layer.
- (16) The manufacturing method of the semiconductor device described in (16).
- (18) The method for manufacturing a semiconductor device according to (16) or (17), wherein the electrode protective layer and the first conductor layer are formed together with a wiring layer on the first surface of the first semiconductor substrate.
- An electronic apparatus comprising: the semiconductor device according to any one of (1) to (11); and a signal processing circuit that processes an output signal of the semiconductor device.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
また、本技術の電子機器は、上記半導体装置と、この半導体装置の出力信号を処理する信号処理回路とを備える。
なお、説明は以下の順序で行う。
1.半導体装置の第1実施形態
2.半導体装置の製造方法の第1実施形態
4.半導体装置の第2実施形態
5.半導体装置の製造方法の第2実施形態
6.半導体装置の第3実施形態
7.半導体装置の製造方法の第3実施形態
8.半導体装置の第4実施形態
9.半導体装置の製造方法の第4実施形態
10.電子機器
貫通電極を有する半導体装置の第1実施形態について説明する。
図1に、本実施形態の貫通電極を備える半導体装置の概略構成を示す。図1は、貫通電極が形成されている領域付近の半導体装置の断面図である。なお、図1では、貫通電極の形成領域付近の概略構成のみを示し、半導体基体の各構成や貫通電極周囲に設けられる各構成の図示を省略している。
第1チップ10は、第1半導体基体11と、第1半導体基体11の一方の面(第1面)上に形成された配線層12とを備える。また、第2チップ20は、第2半導体基体21と、第2半導体基体21上に形成された配線層22とを備える。そして、第1チップ10と第2チップ20とが、互いの配線層12,22を対向させて貼り合わされている。配線層12,22の表面には、接合面25が形成される。
また、第1半導体基体11の他方の面(第2面)上に、絶縁層からなる保護層13,14を備える。保護層13は、後述する貫通電極17が設けられる位置を除き、第1半導体基体11の第2面上の全面を覆って設けられている。保護層14は、貫通電極17の露出面及び保護層13上を覆って全面に設けられている。
そして、貫通電極17の側面が、第1電極パッド16の開口部の内側面に接続されている。そして、貫通電極17の底面が、第2電極パッド23の表面に接続されている。このように、貫通電極17は、配線層12の第1電極パッド16と、第2電極パッド23とを電気的に接続する。
貫通電極17の周囲を囲んで、絶縁層15が形成されている。図1及び図2に示すように、第1半導体基体11内では、絶縁層15で貫通電極17の全体を囲むことにより、貫通電極17と第1半導体基体11との導通が遮断される。
また、絶縁層15は、窒化膜(SiN)や酸化膜(SiO)、SiNとポリシリコンとの組み合わせ等、ドライエッチングで形成された幅50nm~1000nmの溝に埋め込みが可能な材料であればよい。
さらに、第1電極パッド16の開口幅をCとする。
また、第1電極パッド16の開口幅Cが貫通電極17の開口部Bよりも小さすぎると、貫通電極17の形成工程において、ドライエッチングにより開口部を形成する際に第2チップ20の第2電極パッド23までエッチングできなくなる可能性がある。このため、開口幅Cと開口部Bとの差は1μm以下とすることが好ましい。
つまり、第1電極パッド16の開口幅Cと、貫通電極17の開口部Bとの関係は、(B-1μm)<C≦Bとなることが好ましい。
また、絶縁層15の内側の長さAと貫通電極17の開口部Bとの差は0.5μmよりも小さくすることが好ましい。差を0.5μmよりも小さくすることにより、貫通電極17を形成工程において、開口部内に電解めっきを行う際に、シード層の段切れを防ぐことができ、貫通電極17のめっき性が向上する。
つまり、貫通電極17の開口部Bと、絶縁層15の内側の長さAとの関係は、(B-0.5μm)<Aとなることが好ましい。
このように、上述の構成の貫通電極17は、半導体基体とは絶縁層を挟むことにより接触せず、配線層において層間絶縁層及び導体層と直接に接することができる。
次に、第1実施形態の半導体装置の製造方法の一例を説明する。なお、以下の製造方法の説明では、上述の図1に示す半導体装置の貫通電極とその周辺の構成の製造方法のみを示し、その他の素子や配線等の構成の製造方法は説明を省略する。半導体基体、配線層、他の各種トランジスタ、各種素子等については、従来公知の方法により作製することができる。また、上述の図1に示す本実施形態の半導体装置の構成と同様の構成には、同じ符号を付して各構成の詳細な説明は省略する。
第1半導体基体11の第1面上に、SiO2やSiN等によるハードマスク層31を形成する。そして、ハードマスク層31上に図示しないレジストを形成した後、フォトリソグラフィによりレジストをパターニングする。レジストは、第1半導体基体11に形成する絶縁層15の形状を開口するパターンに形成する。さらに、パターニングしたレジストをマスクに用いてハードマスク層31のドライエッチングを行う。ドライエッチング後に、レジストの除去及び洗浄を行う。そして、ハードマスク層31をマスクとして、第1半導体基体11の表面をドライエッチングにより開口し、開口部(溝)を形成する。その後、形成した開口部に、窒化膜(SiN)や酸化膜(SiO)、SiNとポリシリコンとの組み合わせ等を埋め込み、絶縁層15を形成する。
また、絶縁層15を形成する深さ(開口部の深さ)は、第1半導体基体11の薄膜化後の厚さ以上とする。薄膜化後の厚さ以上に絶縁層15を形成することにより、第1半導体基体11の深さ方向の全域に絶縁層15が形成される。
絶縁層15は、ドライエッチングで形成された幅50nm~1000nmの開口部に埋め込みが可能な材料であればよい。また、絶縁層15の埋め込み方法としてはP-CVDやスピンコーティング等の加工済みの開口に埋め込み可能な方法を用いればよい。
配線層12には、複数層の導体層と層間絶縁層とからなる多層配線層を形成する。ここでは、少なくとも1層の導体層からなる第1電極パッド16と、少なくとも2層以上からなる層間絶縁層18を形成する。
第1電極パッド16は、貫通電極17と同形状の開口を有して形成されている。この第1電極パッド16の開口幅は、例えば、上述の第1電極パッド16の開口幅Cと貫通電極17の開口部Bとの関係、(B-1μm)<C≦Bを満たすように形成する。
そして、図5Cに示すように、第1半導体基体11を反転させて、第1半導体基体11の配線層12の表面を、第2半導体基体21の配線層22の表面と対向させる。そして、ピンで押下して第1半導体基体11と第2半導体基体21の配線層12,22を接触させ、貼り合わせを行う。
貼り合わせは、CMP直後に前処理なしで第1半導体基体11と第2半導体基体21とを向かい合わせて、第1半導体基体11と第2半導体基体21の中心を押下することにより実施する。
この貼り合わせ工程では、例えば、第1半導体基体11及び第2半導体基体21への接触面が円となる形状をしているピンを用いる。また、押下する荷重は、例えば12Nとする。
さらに、薄膜化後の第1半導体基体11の第2面上に、SiNやSiO2等の成膜を行い保護層13を形成する。
開口部32の形成は、上述の絶縁層15を埋め込むための開口部(溝)を形成する工程と同様に行うことができる。例えば、図8Aに示すように、保護層13上にフォトリソグラフィによるレジストパターンを形成した後、このレジストパターンを用いて保護層13のハードマスクパターンを形成し、第1半導体基体11のドライエッチングを行う。
以上の工程により、本実施形態の半導体装置を製造することができる。
貫通電極を有する半導体装置の第2実施形態について説明する。
図9に、本実施形態の貫通電極を備える半導体装置の概略構成を示す。図9は、貫通電極が形成されている領域付近の半導体装置の断面図である。なお、図9では、貫通電極の形成領域付近の概略構成のみを示し、半導体基体の各構成や貫通電極周囲に設けられる各構成の図示を省略している。また、本実施形態において、上述の第1実施形態の半導体装置と同様の構成には、同じ符号を付して詳細な説明を省略する。
なお、第1チップ10は、第1電極パッド16の構成を除き、上述の第1実施形態と同様の構成である。また、第2チップ20は、上述の第1実施形態と同様の構成である。
また、貫通電極17は、第1電極パッド16の第2面側における断面積の大きさが、第1電極パッド16の第2面側の開口部よりも、大きいことが好ましい。この場合には、貫通電極17と第1電極パッド16との接触を、さらに確保しやすくなる。このため、貫通電極17と第1電極パッド16との接触不良等を、さらに起こりにくくすることができる。
次に、第2実施形態の半導体装置の製造方法の一例を説明する。なお、以下の製造方法の説明では、上述の図9に示す半導体装置の貫通電極とその周辺の構成の製造方法のみを示し、その他の素子や配線等の構成の製造方法は説明を省略する。半導体基体、配線層、他の各種トランジスタ、各種素子等については、従来公知の方法により作製することができる。また、上述の第1実施形態の半導体装置の構成及び製造方法において説明した構成、操作等は詳細な説明を省略する。
ドライエッチングにおいてArを用いないことにより、第1電極パッド16を構成するCu等の金属に対するスパッタ効果が弱まり、第1電極パッド16と層間絶縁層18との選択比が増加する。このため、第1電極パッド16の開口部の内側面が傾斜するようドライエッチングが進行する。ここで、傾斜角度等の傾斜面の形状のコントロールは、一般的にはドライエッチングに用いる酸素の比分量で行うことができる。
また、バリアメタル層の面積が大きくなることで、バリアメタル層の被覆性が向上する。このため、形成するバリアメタル層の厚さを低減することができ、貫通電極17と第1電極パッド16との接触抵抗を低減することができる。
貫通電極を有する半導体装置の第3実施形態について説明する。
図15に、本実施形態の貫通電極を備える半導体装置の概略構成を示す。図15は、貫通電極が形成されている領域付近の半導体装置の断面図である。なお、図15では、貫通電極の形成領域付近の概略構成のみを示し、半導体基体の各構成や貫通電極周囲に設けられる各構成の図示を省略している。また、本実施形態において、上述の第1実施形態の半導体装置と同様の構成には、同じ符号を付して詳細な説明を省略する。
なお、第1チップ10は、絶縁層15の構成を除き、上述の第1実施形態と同様の構成である。また、第2チップ20は、上述の第1実施形態と同様の構成である。
次に、第3実施形態の半導体装置の製造方法の一例を説明する。なお、以下の製造方法の説明では、上述の図9に示す半導体装置の貫通電極とその周辺の構成の製造方法のみを示し、その他の素子や配線等の構成の製造方法は説明を省略する。半導体基体、配線層、他の各種トランジスタ、各種素子等については、従来公知の方法により作製することができる。また、上述の第1実施形態の半導体装置の構成及び製造方法において説明した構成、操作等は詳細な説明を省略する。
貫通電極を有する半導体装置の第4実施形態について説明する。
図19に、本実施形態の貫通電極を備える半導体装置の概略構成を示す。図19は、貫通電極が形成されている領域付近の半導体装置の断面図である。なお、図19では、貫通電極の形成領域付近の概略構成のみを示し、半導体基体の各構成や貫通電極周囲に設けられる各構成の図示を省略している。また、本実施形態において、上述の第1実施形態の半導体装置と同様の構成には、同じ符号を付して詳細な説明を省略する。
なお、第1チップ10は、第1電極パッド16A及び電極保護層35の構成を除き、上述の第1実施形態と同様の構成であり、また、第2チップ20は、上述の第1実施形態と同様の構成である。
具体的には、電極保護層35は、製造時のエッチング工程において、例えばタングステン又はポリシリコンなどで形成される第1電極パッド16Aをエッチングから保護する層である。また、電極保護層35は、例えば、酸化膜であり、SiO2で形成される。
また、電極保護層35は、第1電極パッド16Aに対応する形状を有し、第1電極パッド16Aを保護することができれば、いかなる形状であってもよい。
そのため、電極保護層35は、配線層12に含まれるいずれかの酸化物と同一の材料で形成されることが好ましく、第1電極パッド16Aは、配線層12に含まれるいずれかの配線又は電極と同一の材料で形成されることが好ましい。
なお、図20に示す変形例において、Cuで形成された配線電極36は、第1電極パッド16Aの開口側の端部よりも、開口の中心方向に対して外側に形成され、開口部33を形成する工程において、開口部33に露出しないことは言うまでもない。
このような構成により、第1電極パッド16Bは、貫通電極17Aとの接触面積を増加させることができるため、貫通電極17Aと確実に電気的接続を行うことができる。したがって、図21に示す変形例では、貫通電極17Aと第1電極パッド16Bとの接続信頼性を向上させることができる。
次に、第4実施形態の半導体装置の製造方法の一例を説明する。なお、以下の製造方法の説明では、上述の図19に示す半導体装置の貫通電極とその周辺の構成の製造方法のみを示し、その他の素子や配線等の構成の製造方法は説明を省略する。半導体基体、配線層、他の各種トランジスタ、各種素子等については、従来公知の方法により作製することができる。また、上述の第1実施形態の半導体装置の構成及び製造方法において説明した構成、操作等は詳細な説明を省略する。
このような構成によれば、本実施形態に係る電極保護層35は、後述する開口部33を形成する工程において、エッチングの際に、第1電極パッド16Aがエッチングされないよう、より確実に保護することができる。
なお、図24Eでは、開口部33を形成する工程において、絶縁層15の開口側の端部よりも開口の中心方向に存在する第1電極パッド16Aについても併せて除去しているが、本実施形態は係る例示に限定されない。図21を参照して上述したように、ドライエッチング条件を適切に制御することにより、第1電極パッド16Aを除去せずにマスクとして用い、電極保護層35、及び配線層12,22等を除去することも可能である。
[固体撮像装置]
以下、上述の実施形態における電極接合の構成を固体撮像装置に適用した例を説明する。この固体撮像装置は、例えば、デジタルカメラやビデオカメラ等のカメラシステム、撮像機能を有する携帯電話、又は、撮像機能を備えた他の機器などの電子機器に適用することができる。以下、電子機器の一構成例として、カメラを例に挙げ説明する。
この例のカメラ40は、固体撮像装置41と、固体撮像装置41の受光センサ部に入射光を導く光学系42と、固体撮像装置41及び光学系42間に設けられたシャッタ装置43と、固体撮像装置41を駆動する駆動回路44とを備える。さらに、カメラ40は、固体撮像装置41の出力信号を処理する信号処理回路45を備える。
光学系(光学レンズ)42は、被写体からの像光(入射光)を固体撮像装置41の撮像面(不図示)上に結像させる。これにより、固体撮像装置41内に、一定期間、信号電荷が蓄積される。なお、光学系42は、複数の光学レンズを含む光学レンズ群で構成してもよい。また、シャッタ装置43は、入射光の固体撮像装置41への光照射期間及び遮光期間を制御する。
(1)第1半導体基体と、前記第1半導体基体の第1面側に貼り合わされた第2半導体基体と、前記第1半導体基体の第2面側から前記第2半導体基体上の配線層まで貫通して形成されている貫通電極と、前記第1半導体基体内に形成されている前記貫通電極の周囲を囲む絶縁層と、を備える半導体装置。
(2)前記第1半導体基体の第1面上の配線層に第1導体層を有し、前記貫通電極の側面が前記第1導体層と接続されている(1)に記載の半導体装置。
(3)前記貫通電極の底部が前記第2半導体基体上の配線層に設けられた第2導体層に接続され、前記貫通電極を介して前記第1導体層と前記第2導体層とが接続されている(2)に記載の半導体装置。
(4)前記第1導体層は前記貫通電極の側面と接続する開口を有する(2)又は(3)に記載の半導体装置。
(5)前記貫通電極の開口部の幅よりも、前記第1導体層の開口幅が小さい(4)に記載の半導体装置。
(6)前記貫通電極の開口部の幅よりも、前記絶縁層の内側の長さが大きい(1)から(5)のいずれかに記載の半導体装置。
(7)前記第1導体層の開口は、前記第1半導体基体の第2面側の開口が大きく、前記第1半導体基体の第1面側の開口が小さく形成されている(4)又は(5)に記載の半導体装置。
(8)前記第1導体層の開口が傾斜面を有する形状に形成されている(7)に記載の半導体装置。
(9)前記第1導体層の開口部の内側面の傾斜角が40°以下である(8)に記載の半導体装置。
(10)前記絶縁層と前記第1導体層との間に、前記第1導体層を保護する電極保護層を有する(2)~(9)のいずれかに記載の半導体装置。
(11)前記電極保護層は、前記第1半導体基体の第1面上の配線層に含まれる酸化物と同一の材料で形成され、前記第1導体層は、前記第1半導体基体の第1面上の配線層に含まれる配線又は電極のいずれかと同一の材料で形成される(10)に記載の半導体装置。
(12)第1半導体基体を貫通する貫通電極を備える半導体装置の製造方法であって、前記第1半導体基体の第1面に、前記貫通電極を形成する位置の周囲を囲む絶縁層を形成する工程と、前記第1半導体基体の第1面側に、第2半導体基体を貼り合わせる工程と、前記絶縁層に囲まれた範囲内において、前記第1半導体基体の第2面側から、前記第2半導体基体上の配線層までを貫通する開口部を形成する工程と、前記開口部内に貫通電極を形成する工程と、を有する半導体装置の製造方法。
(13)前記開口部を形成する工程において、前記絶縁層に囲まれた範囲内で前記第1半導体基体をエッチングした後、さらに、前記絶縁層の内壁面に残存する記第1半導体基体をエッチングする工程を有する(12)に記載の半導体装置の製造方法。
(14)前記第1半導体基体の第1面上の配線層に第1導体層を形成する工程を有し、前記開口部を形成する工程において、前記第1導体層に前記第1半導体基体の第2面側の開口が大きく、前記第1半導体基体の第1面側の開口が小さ開口部を形成する(12)又は(13)に記載の半導体装置の製造方法。
(15)前記絶縁層に囲まれた範囲内において、前記第1半導体基体を選択的にエッチングする工程と、前記絶縁層の内面側の一部をエッチングする工程とを有する(12)から(14)のいずれかに記載の半導体装置の製造方法。
(16)前記第1半導体基体の第1面上の配線層に第1導体層を形成し、また前記絶縁層と前記第1導体層との間に電極保護層を形成する工程を有し、前記開口部を形成する工程は、前記絶縁層に囲まれた範囲内の前記第1半導体基体をエッチングする工程と、前記電極保護層から前記第2半導体基体上の配線層までをエッチングする工程と、を含む(12)に記載の半導体装置の製造方法。
(17)電極保護層を形成する工程において、前記電極保護層は、前記電極保護層の開口側の端部が前記絶縁層の開口側の端部よりも開口の中心方向に向かって突出するように形成される(16)に記載の半導体装置の製造方法。
(18)前記電極保護層及び前記第1導体層は、前記第1半導体基体の第1面上の配線層と併せて形成される(16)又は(17)に記載の半導体装置の製造方法。
(19)(1)から(11)のいずれかに記載の半導体装置と、前記半導体装置の出力信号を処理する信号処理回路と、を備える電子機器
Claims (19)
- 第1半導体基体と、
前記第1半導体基体の第1面側に貼り合わされた第2半導体基体と、
前記第1半導体基体の第2面側から前記第2半導体基体上の配線層まで貫通して形成されている貫通電極と、
前記第1半導体基体内に形成されている前記貫通電極の周囲を囲む絶縁層と、を備える
半導体装置。 - 前記第1半導体基体の第1面上の配線層に第1導体層を有し、前記貫通電極の側面が前記第1導体層と接続されている請求項1に記載の半導体装置。
- 前記貫通電極の底部が前記第2半導体基体上の配線層に設けられた第2導体層に接続され、前記貫通電極を介して前記第1導体層と前記第2導体層とが接続されている請求項2に記載の半導体装置。
- 前記第1導体層は前記貫通電極の側面と接続する開口を有する請求項2に記載の半導体装置。
- 前記貫通電極の開口部の幅よりも、前記第1導体層の開口幅が小さい請求項4に記載の
半導体装置。 - 前記貫通電極の開口部の幅よりも、前記絶縁層の内側の長さが大きい請求項1に記載の
半導体装置。 - 前記第1導体層の開口は、前記第1半導体基体の第2面側の開口が大きく、前記第1半導体基体の第1面側の開口が小さく形成されている請求項4に記載の半導体装置。
- 前記第1導体層の開口が傾斜面を有する形状に形成されている請求項7に記載の半導体装置。
- 前記第1導体層の開口部の内側面の傾斜角が40°以下である請求項8に記載の半導体装置。
- 前記絶縁層と前記第1導体層との間に、前記第1導体層を保護する電極保護層を有する請求項2に記載の半導体装置。
- 前記電極保護層は、前記第1半導体基体の第1面上の配線層に含まれる酸化物と同一の材料で形成され、前記第1導体層は、前記第1半導体基体の第1面上の配線層に含まれる配線又は電極のいずれかと同一の材料で形成される請求項10に記載の半導体装置。
- 第1半導体基体を貫通する貫通電極を備える半導体装置の製造方法であって、
前記第1半導体基体の第1面に、前記貫通電極を形成する位置の周囲を囲む絶縁層を形成する工程と、
前記第1半導体基体の第1面側に、第2半導体基体を貼り合わせる工程と、
前記絶縁層に囲まれた範囲内において、前記第1半導体基体の第2面側から、前記第2半導体基体上の配線層までを貫通する開口部を形成する工程と、
前記開口部内に貫通電極を形成する工程と、を有する
半導体装置の製造方法。 - 前記開口部を形成する工程において、前記絶縁層に囲まれた範囲内で前記第1半導体基体をエッチングした後、さらに、前記絶縁層の内壁面に残存する記第1半導体基体をエッチングする工程を有する請求項12に記載の半導体装置の製造方法。
- 前記第1半導体基体の第1面上の配線層に第1導体層を形成する工程を有し、前記開口部を形成する工程において、前記第1導体層に前記第1半導体基体の第2面側の開口が大きく、前記第1半導体基体の第1面側の開口が小さ開口部を形成する請求項12に記載の半導体装置の製造方法。
- 前記絶縁層に囲まれた範囲内において、前記第1半導体基体を選択的にエッチングする工程と、前記絶縁層の内面側の一部をエッチングする工程とを有する請求項12に記載の半導体装置の製造方法。
- 前記第1半導体基体の第1面上の配線層に第1導体層を形成し、また前記絶縁層と前記第1導体層との間に電極保護層を形成する工程を有し、
前記開口部を形成する工程は、前記絶縁層に囲まれた範囲内の前記第1半導体基体をエッチングする工程と、前記電極保護層から前記第2半導体基体上の配線層までをエッチングする工程と、を含む請求項12に記載の半導体装置の製造方法。 - 電極保護層を形成する工程において、前記電極保護層は、前記電極保護層の開口側の端部が前記絶縁層の開口側の端部よりも開口の中心方向に向かって突出するように形成される請求項16に記載の半導体装置の製造方法。
- 前記電極保護層及び前記第1導体層は、前記第1半導体基体の第1面上の配線層と併せて形成される請求項16に記載の半導体装置の製造方法。
- 第1半導体基体と、前記第1半導体基体の第1面側に貼り合わされた第2半導体基体と、前記第1半導体基体の第2面側から前記第2半導体基体上の配線層まで貫通して形成されている貫通電極と、前記第1半導体基体内に形成されている前記貫通電極の周囲を囲む絶縁層とからなる半導体装置と、
前記半導体装置の出力信号を処理する信号処理回路と、を備える
電子機器。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/409,634 US9343392B2 (en) | 2012-06-29 | 2013-06-19 | Semiconductor device, manufacturing method for semiconductor device, and electronic device |
JP2014522569A JP6094583B2 (ja) | 2012-06-29 | 2013-06-19 | 半導体装置、半導体装置の製造方法、及び、電子機器 |
CN201380033466.5A CN104412372B (zh) | 2012-06-29 | 2013-06-19 | 半导体装置、半导体装置的制造方法和电子设备 |
US15/097,093 US9524925B2 (en) | 2012-06-29 | 2016-04-12 | Method of manufacturing a semiconductor device |
US15/354,871 US9922961B2 (en) | 2012-06-29 | 2016-11-17 | Semiconductor device, manufacturing method for semiconductor device, and electronic device |
US15/887,242 US10373934B2 (en) | 2012-06-29 | 2018-02-02 | Semiconductor device, manufacturing method for semiconductor device, and electronic device |
US16/521,215 US11063020B2 (en) | 2012-06-29 | 2019-07-24 | Semiconductor device, manufacturing method for semiconductor device, and electronic device |
US17/324,932 US11557573B2 (en) | 2012-06-29 | 2021-05-19 | Semiconductor device, manufacturing method for semiconductor device, and electronic device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012147316 | 2012-06-29 | ||
JP2012-147316 | 2012-06-29 | ||
JP2013-024505 | 2013-02-12 | ||
JP2013024505 | 2013-02-12 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/409,634 A-371-Of-International US9343392B2 (en) | 2012-06-29 | 2013-06-19 | Semiconductor device, manufacturing method for semiconductor device, and electronic device |
US15/097,093 Division US9524925B2 (en) | 2012-06-29 | 2016-04-12 | Method of manufacturing a semiconductor device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014002852A1 true WO2014002852A1 (ja) | 2014-01-03 |
Family
ID=49783010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/066876 WO2014002852A1 (ja) | 2012-06-29 | 2013-06-19 | 半導体装置、半導体装置の製造方法、及び、電子機器 |
Country Status (4)
Country | Link |
---|---|
US (6) | US9343392B2 (ja) |
JP (1) | JP6094583B2 (ja) |
CN (4) | CN104412372B (ja) |
WO (1) | WO2014002852A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014072297A (ja) * | 2012-09-28 | 2014-04-21 | Canon Inc | 半導体装置およびその製造方法 |
JP2017073436A (ja) * | 2015-10-06 | 2017-04-13 | ソニーセミコンダクタソリューションズ株式会社 | 固体撮像素子、および電子装置 |
WO2020121491A1 (ja) * | 2018-12-13 | 2020-06-18 | ウルトラメモリ株式会社 | 半導体モジュール及びその製造方法 |
JPWO2022014022A1 (ja) * | 2020-07-16 | 2022-01-20 | ||
US11373958B2 (en) | 2016-06-28 | 2022-06-28 | Sony Corporation | Semiconductor device and semiconductor device manufacturing method for prevention of metallic diffusion into a semiconductor substrate |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6094583B2 (ja) * | 2012-06-29 | 2017-03-15 | ソニー株式会社 | 半導体装置、半導体装置の製造方法、及び、電子機器 |
KR102127828B1 (ko) * | 2018-08-10 | 2020-06-29 | 삼성전자주식회사 | 반도체 패키지 |
US11973006B2 (en) * | 2019-10-11 | 2024-04-30 | Semiconductor Components Industries, Llc | Self-aligned contact openings for backside through substrate vias |
US11482474B2 (en) * | 2020-09-27 | 2022-10-25 | Nanya Technology Corporation | Forming a self-aligned TSV with narrow opening in horizontal isolation layer interfacing substrate |
KR20230009205A (ko) * | 2021-07-08 | 2023-01-17 | 삼성전자주식회사 | 반도체 칩 및 이를 포함하는 반도체 패키지 |
EP4207262A4 (en) * | 2021-07-09 | 2024-04-10 | Changxin Memory Technologies, Inc. | SEMICONDUCTOR STRUCTURE AND PREPARATION METHOD THEREFOR |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000091423A (ja) * | 1998-09-16 | 2000-03-31 | Nec Corp | 多層配線半導体装置及びその製造方法 |
JP2003142576A (ja) * | 2001-10-31 | 2003-05-16 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2005285988A (ja) * | 2004-03-29 | 2005-10-13 | Sony Corp | 固体撮像素子とその製造方法、及び半導体集積回路装置とその製造方法 |
JP2007129233A (ja) * | 2005-11-03 | 2007-05-24 | Internatl Business Mach Corp <Ibm> | 電子デバイス、マルチチップ・スタック、半導体デバイスおよび方法(アクセス可能チップ・スタックおよびその製造方法) |
JP2010245506A (ja) * | 2009-03-19 | 2010-10-28 | Sony Corp | 半導体装置とその製造方法、及び電子機器 |
JP2011091400A (ja) * | 2009-10-22 | 2011-05-06 | Samsung Electronics Co Ltd | イメージセンサ及びその製造方法 |
JP2011096851A (ja) * | 2009-10-29 | 2011-05-12 | Sony Corp | 半導体装置とその製造方法、及び電子機器 |
Family Cites Families (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6538210B2 (en) * | 1999-12-20 | 2003-03-25 | Matsushita Electric Industrial Co., Ltd. | Circuit component built-in module, radio device having the same, and method for producing the same |
JP4088120B2 (ja) * | 2002-08-12 | 2008-05-21 | 株式会社ルネサステクノロジ | 半導体装置 |
JP2004311948A (ja) * | 2003-03-27 | 2004-11-04 | Seiko Epson Corp | 半導体装置、半導体デバイス、電子機器、および半導体装置の製造方法 |
TW200746940A (en) * | 2005-10-14 | 2007-12-16 | Ibiden Co Ltd | Printed wiring board |
KR100784498B1 (ko) * | 2006-05-30 | 2007-12-11 | 삼성전자주식회사 | 적층 칩과, 그의 제조 방법 및 그를 갖는 반도체 패키지 |
US20080102278A1 (en) * | 2006-10-27 | 2008-05-01 | Franz Kreupl | Carbon filament memory and method for fabrication |
JP5563186B2 (ja) | 2007-03-30 | 2014-07-30 | ピーエスフォー ルクスコ エスエイアールエル | 半導体装置及びその製造方法 |
KR101387701B1 (ko) * | 2007-08-01 | 2014-04-23 | 삼성전자주식회사 | 반도체 패키지 및 이의 제조방법 |
JP2009181981A (ja) * | 2008-01-29 | 2009-08-13 | Renesas Technology Corp | 半導体装置の製造方法および半導体装置 |
US7786600B2 (en) * | 2008-06-30 | 2010-08-31 | Hynix Semiconductor Inc. | Circuit substrate having circuit wire formed of conductive polarization particles, method of manufacturing the circuit substrate and semiconductor package having the circuit wire |
KR20100048610A (ko) * | 2008-10-31 | 2010-05-11 | 삼성전자주식회사 | 반도체 패키지 및 그 형성 방법 |
US20110291687A1 (en) * | 2008-12-12 | 2011-12-01 | Hynix Semiconductor Inc. | Probe card for testing semiconductor device and probe card built-in probe system |
JP5330065B2 (ja) * | 2009-04-13 | 2013-10-30 | 新光電気工業株式会社 | 電子装置及びその製造方法 |
JP2011171567A (ja) | 2010-02-19 | 2011-09-01 | Elpida Memory Inc | 基板構造物の製造方法及び半導体装置の製造方法 |
US8455349B2 (en) * | 2010-04-28 | 2013-06-04 | Headway Technologies, Inc. | Layered chip package and method of manufacturing same |
US8928159B2 (en) * | 2010-09-02 | 2015-01-06 | Taiwan Semiconductor Manufacturing & Company, Ltd. | Alignment marks in substrate having through-substrate via (TSV) |
US8405135B2 (en) * | 2010-10-05 | 2013-03-26 | International Business Machines Corporation | 3D via capacitor with a floating conductive plate for improved reliability |
CN102024782B (zh) * | 2010-10-12 | 2012-07-25 | 北京大学 | 三维垂直互联结构及其制作方法 |
JP5640630B2 (ja) * | 2010-10-12 | 2014-12-17 | ソニー株式会社 | 固体撮像装置、固体撮像装置の製造方法、及び電子機器 |
EP2492675B1 (en) * | 2011-02-28 | 2019-01-30 | Nxp B.V. | A biosensor chip and a method of manufacturing the same |
JP5970826B2 (ja) * | 2012-01-18 | 2016-08-17 | ソニー株式会社 | 半導体装置、半導体装置の製造方法、固体撮像装置および電子機器 |
US9058455B2 (en) * | 2012-01-20 | 2015-06-16 | International Business Machines Corporation | Backside integration of RF filters for RF front end modules and design structure |
JP2013168577A (ja) * | 2012-02-16 | 2013-08-29 | Elpida Memory Inc | 半導体装置の製造方法 |
US8878338B2 (en) * | 2012-05-31 | 2014-11-04 | Taiwan Semiconductor Manufacturing Company, Ltd. | Capacitor for interposers and methods of manufacture thereof |
JP6094583B2 (ja) * | 2012-06-29 | 2017-03-15 | ソニー株式会社 | 半導体装置、半導体装置の製造方法、及び、電子機器 |
US9825209B2 (en) * | 2012-12-21 | 2017-11-21 | Panasonic Intellectual Property Management Co., Ltd. | Electronic component package and method for manufacturing the same |
KR102173083B1 (ko) * | 2014-06-11 | 2020-11-02 | 삼성전자주식회사 | 높은 종횡비를 갖는 반도체 소자 형성 방법 및 관련된 소자 |
KR102200497B1 (ko) * | 2014-07-07 | 2021-01-11 | 삼성전자주식회사 | 반도체 기억 소자 및 그 제조방법 |
JP2016040807A (ja) * | 2014-08-13 | 2016-03-24 | 株式会社東芝 | 半導体装置 |
TW201637190A (zh) * | 2015-03-25 | 2016-10-16 | Sony Corp | 固體攝像裝置及電子機器 |
WO2018186027A1 (ja) * | 2017-04-04 | 2018-10-11 | ソニーセミコンダクタソリューションズ株式会社 | 半導体装置、半導体装置の製造方法、及び電子機器 |
FR3073977B1 (fr) * | 2017-11-22 | 2021-12-03 | Commissariat Energie Atomique | Transistors de circuit 3d a grille retournee |
KR20210018669A (ko) * | 2019-08-08 | 2021-02-18 | 삼성전자주식회사 | 비아 및 배선을 포함하는 반도체 소자 |
-
2013
- 2013-06-19 JP JP2014522569A patent/JP6094583B2/ja active Active
- 2013-06-19 CN CN201380033466.5A patent/CN104412372B/zh active Active
- 2013-06-19 CN CN201711458678.4A patent/CN108091564A/zh active Pending
- 2013-06-19 WO PCT/JP2013/066876 patent/WO2014002852A1/ja active Application Filing
- 2013-06-19 CN CN201711458686.9A patent/CN108172562A/zh active Pending
- 2013-06-19 CN CN201711457463.0A patent/CN108091563A/zh active Pending
- 2013-06-19 US US14/409,634 patent/US9343392B2/en active Active
-
2016
- 2016-04-12 US US15/097,093 patent/US9524925B2/en not_active Expired - Fee Related
- 2016-11-17 US US15/354,871 patent/US9922961B2/en active Active
-
2018
- 2018-02-02 US US15/887,242 patent/US10373934B2/en active Active
-
2019
- 2019-07-24 US US16/521,215 patent/US11063020B2/en active Active
-
2021
- 2021-05-19 US US17/324,932 patent/US11557573B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000091423A (ja) * | 1998-09-16 | 2000-03-31 | Nec Corp | 多層配線半導体装置及びその製造方法 |
JP2003142576A (ja) * | 2001-10-31 | 2003-05-16 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2005285988A (ja) * | 2004-03-29 | 2005-10-13 | Sony Corp | 固体撮像素子とその製造方法、及び半導体集積回路装置とその製造方法 |
JP2007129233A (ja) * | 2005-11-03 | 2007-05-24 | Internatl Business Mach Corp <Ibm> | 電子デバイス、マルチチップ・スタック、半導体デバイスおよび方法(アクセス可能チップ・スタックおよびその製造方法) |
JP2010245506A (ja) * | 2009-03-19 | 2010-10-28 | Sony Corp | 半導体装置とその製造方法、及び電子機器 |
JP2011091400A (ja) * | 2009-10-22 | 2011-05-06 | Samsung Electronics Co Ltd | イメージセンサ及びその製造方法 |
JP2011096851A (ja) * | 2009-10-29 | 2011-05-12 | Sony Corp | 半導体装置とその製造方法、及び電子機器 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014072297A (ja) * | 2012-09-28 | 2014-04-21 | Canon Inc | 半導体装置およびその製造方法 |
JP2017073436A (ja) * | 2015-10-06 | 2017-04-13 | ソニーセミコンダクタソリューションズ株式会社 | 固体撮像素子、および電子装置 |
US11373958B2 (en) | 2016-06-28 | 2022-06-28 | Sony Corporation | Semiconductor device and semiconductor device manufacturing method for prevention of metallic diffusion into a semiconductor substrate |
WO2020121491A1 (ja) * | 2018-12-13 | 2020-06-18 | ウルトラメモリ株式会社 | 半導体モジュール及びその製造方法 |
JPWO2020121491A1 (ja) * | 2018-12-13 | 2021-02-15 | ウルトラメモリ株式会社 | 半導体モジュール及びその製造方法 |
JPWO2022014022A1 (ja) * | 2020-07-16 | 2022-01-20 | ||
WO2022014022A1 (ja) * | 2020-07-16 | 2022-01-20 | ウルトラメモリ株式会社 | 半導体装置及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US9343392B2 (en) | 2016-05-17 |
CN108091563A (zh) | 2018-05-29 |
US20170069604A1 (en) | 2017-03-09 |
CN104412372A (zh) | 2015-03-11 |
CN108091564A (zh) | 2018-05-29 |
US9922961B2 (en) | 2018-03-20 |
US20190348398A1 (en) | 2019-11-14 |
CN104412372B (zh) | 2018-01-26 |
CN108172562A (zh) | 2018-06-15 |
US20210272933A1 (en) | 2021-09-02 |
US11557573B2 (en) | 2023-01-17 |
US20160247746A1 (en) | 2016-08-25 |
US11063020B2 (en) | 2021-07-13 |
US20150179546A1 (en) | 2015-06-25 |
US10373934B2 (en) | 2019-08-06 |
JPWO2014002852A1 (ja) | 2016-05-30 |
US20180158803A1 (en) | 2018-06-07 |
US9524925B2 (en) | 2016-12-20 |
JP6094583B2 (ja) | 2017-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6094583B2 (ja) | 半導体装置、半導体装置の製造方法、及び、電子機器 | |
US10804313B2 (en) | Semiconductor device and solid-state imaging device | |
US9013022B2 (en) | Pad structure including glue layer and non-low-k dielectric layer in BSI image sensor chips | |
TWI497696B (zh) | 半導體器件,其製造方法及電子裝置 | |
US7932602B2 (en) | Metal sealed wafer level CSP | |
JP2011009645A (ja) | 半導体装置及びその製造方法 | |
US20100283130A1 (en) | Semiconductor device and manufacturing method thereof | |
JP2011258687A (ja) | 半導体装置およびその製造方法 | |
JP4987928B2 (ja) | 半導体装置の製造方法 | |
CN112349736A (zh) | 半导体器件结构及其制造方法 | |
KR102490636B1 (ko) | 반도체 장치, 및 반도체 장치의 제조 방법 | |
JP2010186870A (ja) | 半導体装置 | |
US11276723B2 (en) | Semiconductor device, apparatus, and method for producing semiconductor device | |
WO2009141952A1 (ja) | 半導体装置及びその製造方法 | |
JP2009099841A (ja) | 半導体装置及びその製造方法 | |
US20100314776A1 (en) | Connection pad structure for an image sensor on a thinned substrate | |
JP5751131B2 (ja) | 半導体装置及びその製造方法 | |
JP2023004854A (ja) | 半導体装置及びその製造方法 | |
JP2006179663A (ja) | 半導体装置、半導体装置の製造方法、及び半導体パッケージ |
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: 13809929 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2014522569 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14409634 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13809929 Country of ref document: EP Kind code of ref document: A1 |