JP6967907B2 - 半導体装置及び半導体装置の製造方法 - Google Patents
半導体装置及び半導体装置の製造方法 Download PDFInfo
- Publication number
- JP6967907B2 JP6967907B2 JP2017152602A JP2017152602A JP6967907B2 JP 6967907 B2 JP6967907 B2 JP 6967907B2 JP 2017152602 A JP2017152602 A JP 2017152602A JP 2017152602 A JP2017152602 A JP 2017152602A JP 6967907 B2 JP6967907 B2 JP 6967907B2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- region
- outer peripheral
- contact plug
- gate electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004065 semiconductor Substances 0.000 title claims description 95
- 238000000034 method Methods 0.000 title claims description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 68
- 210000000746 body region Anatomy 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 19
- 230000007423 decrease Effects 0.000 claims description 5
- 239000011229 interlayer Substances 0.000 description 24
- 238000002161 passivation Methods 0.000 description 15
- 239000012535 impurity Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 4
- 238000001020 plasma etching Methods 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
-
- 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
- H01L21/76897—Formation of self-aligned vias or contact plugs, i.e. involving a lithographically uncritical step
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
-
- 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
- H01L21/76—Making of isolation regions between components
- H01L21/763—Polycrystalline semiconductor regions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3157—Partial encapsulation or coating
- H01L23/3171—Partial encapsulation or coating the coating being directly applied to the semiconductor body, e.g. passivation layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/538—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
- H01L23/5386—Geometry or layout of the interconnection structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/0611—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region
- H01L27/0617—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region comprising components of the field-effect type
- H01L27/0629—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region comprising components of the field-effect type in combination with diodes, or resistors, or capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0607—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration
- H01L29/0611—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices
- H01L29/0615—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
- H01L29/0619—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE] with a supplementary region doped oppositely to or in rectifying contact with the semiconductor containing or contacting region, e.g. guard rings with PN or Schottky junction
- H01L29/0623—Buried supplementary region, e.g. buried guard ring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0607—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration
- H01L29/0611—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices
- H01L29/0615—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
- H01L29/063—Reduced surface field [RESURF] pn-junction structures
- H01L29/0634—Multiple reduced surface field (multi-RESURF) structures, e.g. double RESURF, charge compensation, cool, superjunction (SJ), 3D-RESURF, composite buffer (CB) structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0684—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape, relative sizes or dispositions of the semiconductor regions or junctions between the regions
- H01L29/0692—Surface layout
- H01L29/0696—Surface layout of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1095—Body region, i.e. base region, of DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42356—Disposition, e.g. buried gate electrode
- H01L29/4236—Disposition, e.g. buried gate electrode within a trench, e.g. trench gate electrode, groove gate electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42372—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out
- H01L29/4238—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out characterised by the surface lay-out
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/66734—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the gate electrode, e.g. to form a trench gate electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
-
- 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
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/0212—Auxiliary members for bonding areas, e.g. spacers
- H01L2224/02122—Auxiliary members for bonding areas, e.g. spacers being formed on the semiconductor or solid-state body
- H01L2224/02163—Auxiliary members for bonding areas, e.g. spacers being formed on the semiconductor or solid-state body on the bonding area
- H01L2224/02165—Reinforcing structures
- H01L2224/02166—Collar structures
-
- 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
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
- H01L2224/05001—Internal layers
- H01L2224/05075—Plural internal layers
- H01L2224/0508—Plural internal layers being stacked
- H01L2224/05085—Plural internal layers being stacked with additional elements, e.g. vias arrays, interposed between the stacked layers
- H01L2224/05098—Material of the additional element
-
- 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
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
- H01L2224/0554—External layer
- H01L2224/05599—Material
- H01L2224/056—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2224/05617—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of greater than or equal to 400°C and less than 950°C
- H01L2224/05624—Aluminium [Al] as principal constituent
-
- 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
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/06—Structure, shape, material or disposition of the bonding areas prior to the connecting process of a plurality of bonding areas
- H01L2224/0601—Structure
- H01L2224/0603—Bonding areas having different sizes, e.g. different heights or widths
-
- 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
- H01L24/02—Bonding areas ; Manufacturing methods related thereto
- H01L24/03—Manufacturing methods
-
- 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
- H01L24/02—Bonding areas ; Manufacturing methods related thereto
- H01L24/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L24/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
-
- 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
- H01L24/02—Bonding areas ; Manufacturing methods related thereto
- H01L24/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L24/06—Structure, shape, material or disposition of the bonding areas prior to the connecting process of a plurality of bonding areas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/402—Field plates
- H01L29/407—Recessed field plates, e.g. trench field plates, buried field plates
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
以下に、第1実施形態に係る半導体装置の構成を説明する。
図5に示すように、第1実施形態に係る半導体装置の製造方法は、フロントエンド工程S1と、バックエンド工程S2とを有している。
図13に示すように、コンタクトプラグとゲート電極とのコンタクト抵抗は、コンタクトプラグの長手方向における寸法が減少するにしたがって大きく増加する。この理由の第1は、平面視におけるコンタクトホールの角部の形状が丸まってしまうことによる。この理由の第2は、コンタクトプラグの長手方向の寸法が小さくなるため、コンタクトホール中へのコンタクトプラグの埋め込みが不完全となりやすいことによる。
以下に、第2実施形態に係る半導体装置の構成を説明する。なお、以下においては、第1実施形態に係る半導体装置の構成と異なる点を主に説明し、重複する説明は繰り返さないものとする。
上記のとおり、第2実施形態に係る半導体装置において、コンタクトプラグCP7及びコンタクトプラグCP8は、外周領域PERにおいて、溝TR8及び溝TR9を埋め込んでいるゲート電極GEに電気的に接続されている。そのため、第2実施形態に係る半導体装置によると、ゲート電極GEを埋め込むための溝を第2方向に沿って直線状に長く設けることができない場合であっても、第1方向に沿って複数のコンタクトプラグを設けることにより、コンタクトプラグとゲート電極GEとのコンタクト面積を確保することができる。
Claims (8)
- 第1面と、前記第1面の反対面である第2面とを有し、かつ前記第1面に配置される第1導電型のソース領域と、前記第2面に配置される前記第1導電型のドレイン領域と、前記ドレイン領域の前記第1面側に配置される前記第1導電型のドリフト領域と、前記ソース領域と前記ドリフト領域とにより挟み込まれる前記第1導電型とは反対の第2導電型のボディ領域とが形成された半導体基板と、
ゲート電極と、
第1コンタクトプラグとを備え、
前記第1面には、前記第2面に向かって前記ドリフト領域に達するように延在し、かつ前記ゲート電極が埋め込まれた第1溝が設けられ、
前記第1面は、前記ソース領域が配置される有効領域と、前記有効領域の周囲を取り囲む外周領域とを有し、
前記第1溝は、平面視において前記外周領域から前記有効領域に向かう第1方向に沿って、前記外周領域から前記有効領域にわたって延在し、
前記ゲート電極は、前記ソース領域と前記ドリフト領域に挟み込まれる前記ボディ領域と絶縁されながら対向する部分を有し、
前記第1コンタクトプラグは、平面視において長手方向が前記第1方向に沿うように、前記外周領域において前記第1溝に埋め込まれた前記ゲート電極に電気的に接続され、
前記外周領域にある前記第1溝は、拡幅部を有し、
前記拡幅部の前記第1方向に直交する第2方向における幅は、前記有効領域にある前記第1溝の前記第2方向における幅よりも広く、
前記外周領域にある前記第1溝は、前記拡幅部の前記有効領域側の端に連なるテーパ部を有し、
前記テーパ部の前記第2方向における幅は、前記外周領域側から前記有効領域側に向かうにしたがって小さくなる、半導体装置。 - 第2コンタクトプラグと、
第3コンタクトプラグとをさらに備え、
前記第1面には、前記第2面に向かって前記ドリフト領域に達するように延在し、かつ前記ゲート電極が埋め込まれた第2溝、第3溝、第4溝及び第5溝が設けられ、
前記第2溝及び前記第3溝は、前記第1方向に沿って、前記外周領域から前記有効領域にわたって延在し、
前記第4溝及び前記第5溝は、前記外周領域において、前記第1方向に直交する第2方向に沿って延在し、
前記第2溝及び前記第3溝の各々は、前記第1溝と隣り合い、かつ離間して配置され、
前記第4溝は、前記外周領域において、前記第1溝と前記第2溝とに接続され、
前記第5溝は、前記第4溝よりも前記有効領域側にある前記外周領域において、前記第1溝と前記第3溝とに接続され、
前記第2コンタクトプラグは、前記外周領域において、平面視において長手方向が前記第1方向に沿うように前記第2溝に埋め込まれた前記ゲート電極に電気的に接続され、
前記第3コンタクトプラグは、前記外周領域において、平面視において長手方向が前記第1方向に沿うように前記第3溝に埋め込まれた前記ゲート電極に電気的に接続される、請求項1に記載の半導体装置。 - 前記ボディ領域から前記第2面に向かって延びる複数の前記第2導電型のコラム領域をさらに備え、
前記コラム領域の各々は、平面視において、千鳥格子状に互いに離間して配置され、
前記第1溝、前記第2溝、前記第3溝、前記第4溝及び前記第5溝は、平面視において前記コラム領域の間を通過するように配置される、請求項2に記載の半導体装置。 - 第4コンタクトプラグをさらに備え、
前記第4コンタクトプラグは、前記第4溝に埋め込まれた前記ゲート電極に電気的に接続される、請求項2に記載の半導体装置。 - 第5コンタクトプラグをさらに備え、
前記第5コンタクトプラグは、前記第5溝に埋め込まれた前記ゲート電極に電気的に接続される、請求項4に記載の半導体装置。 - 第1面と、前記第1面の反対面である第2面とを有し、かつ前記第1面に配置される第1導電型のソース領域と、前記第2面に配置される前記第1導電型のドレイン領域と、前記ドレイン領域の前記第1面側に配置される前記第1導電型のドリフト領域と、前記ソース領域と前記ドリフト領域とにより挟み込まれる前記第1導電型とは反対の第2導電型のボディ領域とが形成された半導体基板と、
ゲート電極と、
第1コンタクトプラグと、
第2コンタクトプラグとを備え、
前記第1面には、前記第2面に向かって前記ドリフト領域に達するように延在し、かつ前記ゲート電極が埋め込まれた第1溝、第2溝、第3溝及び第4溝が設けられ、
前記第1面は、前記ソース領域が配置される有効領域と、前記有効領域の周囲を取り囲む外周領域とを有し、
前記第1溝及び前記第2溝は、平面視において前記外周領域から前記有効領域に向かう第1方向に沿って、前記外周領域から前記有効領域にわたって延在し、
前記第1溝及び前記第2溝は、前記第1方向に直交する第2方向において間隔を空けて隣り合っており、
前記第3溝及び前記第4溝は、前記外周領域において、前記第2方向に沿って延在し、
前記第3溝及び前記第4溝は、前記第1方向において間隔を空けて隣り合っており、
前記第3溝は、前記外周領域において、前記第1溝と前記第2溝とに接続され、
前記第4溝は、前記第3溝よりも前記有効領域側にある前記外周領域において、前記第1溝と前記第2溝とに接続され、
前記第1コンタクトプラグは、前記第3溝に埋め込まれた前記ゲート電極に電気的に接続され、
前記第2コンタクトプラグは、前記第4溝に埋め込まれた前記ゲート電極に電気的に接続される、半導体装置。 - 前記ボディ領域から前記第2面に向かって延びる複数の前記第2導電型のコラム領域をさらに備え、
前記コラム領域の各々は、平面視において、千鳥格子状に互いに離間して配置され、
前記第1溝、前記第2溝、前記第3溝及び前記第4溝は、平面視において前記コラム領域の間を通過するように配置される、請求項6に記載の半導体装置。 - 第1面と、前記第1面の反対面である第2面とを有する半導体基板の前記第1面に第1溝を形成する工程と、
前記半導体基板に、前記第1面に配置される第1導電型のソース領域と、前記第2面に配置される前記第1導電型のドレイン領域と、前記ドレイン領域の前記第1面側に配置される前記第1導電型のドリフト領域と、前記ソース領域と前記ドリフト領域とにより挟み込まれる前記第1導電型とは反対の第2導電型のボディ領域とを形成する工程と、
ゲート電極を形成する工程と、
第1コンタクトプラグを形成する工程とを備え、
前記第1面は、前記ソース領域が配置される有効領域と、前記有効領域の周囲を取り囲む外周領域とを有し、
前記第1溝は、平面視において前記外周領域から前記有効領域に向かう第1方向に沿って、前記外周領域から前記有効領域にわたって延在し、
前記ゲート電極は、前記第1溝に埋め込まれ、かつ前記ソース領域と前記ドリフト領域に挟み込まれる前記ボディ領域と絶縁されながら対向する部分を有し、
前記第1コンタクトプラグは、平面視において長手方向が前記第1方向に沿うように、前記外周領域において前記第1溝に埋め込まれた前記ゲート電極に電気的に接続され、
前記外周領域にある前記第1溝は、拡幅部を有し、
前記拡幅部の前記第1方向に直交する第2方向における幅は、前記有効領域にある前記第1溝の前記第2方向における幅よりも広く、
前記外周領域にある前記第1溝は、前記拡幅部の前記有効領域側の端に連なるテーパ部を有し、
前記テーパ部の前記第2方向における幅は、前記外周領域側から前記有効領域側に向かうにしたがって小さくなる、半導体装置の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017152602A JP6967907B2 (ja) | 2017-08-07 | 2017-08-07 | 半導体装置及び半導体装置の製造方法 |
US16/028,146 US10529846B2 (en) | 2017-08-07 | 2018-07-05 | Semiconductor device and method of manufacturing the same |
CN201810867285.7A CN109390321A (zh) | 2017-08-07 | 2018-08-02 | 半导体装置及其制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017152602A JP6967907B2 (ja) | 2017-08-07 | 2017-08-07 | 半導体装置及び半導体装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019033151A JP2019033151A (ja) | 2019-02-28 |
JP6967907B2 true JP6967907B2 (ja) | 2021-11-17 |
Family
ID=65231709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017152602A Active JP6967907B2 (ja) | 2017-08-07 | 2017-08-07 | 半導体装置及び半導体装置の製造方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10529846B2 (ja) |
JP (1) | JP6967907B2 (ja) |
CN (1) | CN109390321A (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7289258B2 (ja) * | 2019-11-22 | 2023-06-09 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
US20230246101A1 (en) * | 2020-09-30 | 2023-08-03 | Mitsubishi Electric Corporation | Semiconductor device and method for manufacturing semiconductor device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4907862B2 (ja) * | 2004-12-10 | 2012-04-04 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP4860929B2 (ja) | 2005-01-11 | 2012-01-25 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
EP2543072B1 (en) * | 2010-03-02 | 2021-10-06 | Vishay-Siliconix | Structures and methods of fabricating dual gate devices |
JP5656608B2 (ja) | 2010-12-17 | 2015-01-21 | 三菱電機株式会社 | 半導体装置 |
JP6037499B2 (ja) | 2011-06-08 | 2016-12-07 | ローム株式会社 | 半導体装置およびその製造方法 |
JP2013232533A (ja) * | 2012-04-27 | 2013-11-14 | Rohm Co Ltd | 半導体装置および半導体装置の製造方法 |
CN103268887B (zh) * | 2013-05-29 | 2016-04-06 | 成都芯源系统有限公司 | 场效应晶体管、边缘结构及相关制造方法 |
JP6668697B2 (ja) * | 2015-05-15 | 2020-03-18 | 富士電機株式会社 | 半導体装置 |
-
2017
- 2017-08-07 JP JP2017152602A patent/JP6967907B2/ja active Active
-
2018
- 2018-07-05 US US16/028,146 patent/US10529846B2/en active Active
- 2018-08-02 CN CN201810867285.7A patent/CN109390321A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2019033151A (ja) | 2019-02-28 |
US20190043983A1 (en) | 2019-02-07 |
CN109390321A (zh) | 2019-02-26 |
US10529846B2 (en) | 2020-01-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10115722B2 (en) | Semiconductor devices and methods for manufacturing the same | |
CN108231765B (zh) | 半导体器件 | |
JP4947931B2 (ja) | 半導体装置 | |
KR102523125B1 (ko) | 반도체 소자 | |
US7547600B2 (en) | Five channel fin transistor and method for fabricating the same | |
US8338907B2 (en) | Semiconductor device and method of manufacturing the same | |
JP4102334B2 (ja) | 半導体装置及びその製造方法 | |
JP6872951B2 (ja) | 半導体装置及びその製造方法 | |
JP6967907B2 (ja) | 半導体装置及び半導体装置の製造方法 | |
JP2006013303A (ja) | 半導体装置及びその製造方法 | |
JP2008205379A (ja) | 不揮発性半導体メモリ及びその製造方法 | |
JP2007048769A (ja) | 半導体装置およびその製造方法 | |
TWI776892B (zh) | 半導體裝置 | |
JP5096675B2 (ja) | 半導体装置の製造方法および半導体装置 | |
TWI802305B (zh) | 半導體結構以及埋入式場板結構的製造方法 | |
JP2011129760A (ja) | 半導体装置の製造方法及び半導体装置 | |
JP5502468B2 (ja) | 半導体装置の製造方法および半導体装置 | |
JP2009123882A (ja) | 半導体装置およびその製造方法 | |
JP2006269491A (ja) | 半導体装置の製造方法 | |
JP2019212663A (ja) | 半導体装置の製造方法 | |
WO2014050590A1 (ja) | 半導体装置及びその製造方法 | |
JP6999776B2 (ja) | 半導体装置及び半導体装置の製造方法 | |
JP7556798B2 (ja) | 半導体装置及び半導体パッケージ | |
JP2018081949A (ja) | 半導体装置及びその製造方法 | |
JP2019160828A (ja) | 半導体装置及び半導体装置の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200521 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20210311 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210316 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210507 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20211005 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20211026 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6967907 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |