JP7731320B2 - 半導体装置の製造方法 - Google Patents

半導体装置の製造方法

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Publication number
JP7731320B2
JP7731320B2 JP2022080809A JP2022080809A JP7731320B2 JP 7731320 B2 JP7731320 B2 JP 7731320B2 JP 2022080809 A JP2022080809 A JP 2022080809A JP 2022080809 A JP2022080809 A JP 2022080809A JP 7731320 B2 JP7731320 B2 JP 7731320B2
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JP
Japan
Prior art keywords
trench
electrode
contact opening
main surface
semiconductor device
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
Application number
JP2022080809A
Other languages
English (en)
Japanese (ja)
Other versions
JP2023169593A (ja
JP2023169593A5 (https=
Inventor
綱一 小西
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renesas Electronics Corp
Original Assignee
Renesas Electronics Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Renesas Electronics Corp filed Critical Renesas Electronics Corp
Priority to JP2022080809A priority Critical patent/JP7731320B2/ja
Priority to US18/177,478 priority patent/US12550400B2/en
Priority to CN202310543280.XA priority patent/CN117080067A/zh
Publication of JP2023169593A publication Critical patent/JP2023169593A/ja
Publication of JP2023169593A5 publication Critical patent/JP2023169593A5/ja
Application granted granted Critical
Publication of JP7731320B2 publication Critical patent/JP7731320B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/01—Manufacture or treatment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D12/00—Bipolar devices controlled by the field effect, e.g. insulated-gate bipolar transistors [IGBT]
    • H10D12/01—Manufacture or treatment
    • H10D12/031—Manufacture or treatment of IGBTs
    • H10D12/032—Manufacture or treatment of IGBTs of vertical IGBTs
    • H10D12/038—Manufacture or treatment of IGBTs of vertical IGBTs having a recessed gate, e.g. trench-gate IGBTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D12/00—Bipolar devices controlled by the field effect, e.g. insulated-gate bipolar transistors [IGBT]
    • H10D12/411—Insulated-gate bipolar transistors [IGBT]
    • H10D12/441—Vertical IGBTs
    • H10D12/461—Vertical IGBTs having non-planar surfaces, e.g. having trenches, recesses or pillars in the surfaces of the emitter, base or collector regions
    • H10D12/481—Vertical IGBTs having non-planar surfaces, e.g. having trenches, recesses or pillars in the surfaces of the emitter, base or collector regions having gate structures on slanted surfaces, on vertical surfaces, or in grooves, e.g. trench gate IGBTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
    • H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
    • H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
    • H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
    • H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] 
    • H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]  having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/111—Field plates
    • H10D64/117—Recessed field plates, e.g. trench field plates or buried field plates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions 
    • H10D64/23—Electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. sources, drains, anodes or cathodes
    • H10D64/231—Emitter or collector electrodes for bipolar transistors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions 
    • H10D64/23—Electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. sources, drains, anodes or cathodes
    • H10D64/232—Emitter electrodes for IGBTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D64/00—Electrodes of devices having potential barriers
    • H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions 
    • H10D64/27—Electrodes not carrying the current to be rectified, amplified, oscillated or switched, e.g. gates
    • H10D64/311—Gate electrodes for field-effect devices
    • H10D64/411—Gate electrodes for field-effect devices for FETs
    • H10D64/511—Gate electrodes for field-effect devices for FETs for IGFETs
    • H10D64/512—Disposition of the gate electrodes, e.g. buried gates
    • H10D64/513—Disposition of the gate electrodes, e.g. buried gates within recesses in the substrate, e.g. trench gates, groove gates or buried gates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P50/00—Etching of wafers, substrates or parts of devices
    • H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
    • H10P50/24—Dry etching; Plasma etching; Reactive-ion etching of semiconductor materials
    • H10P50/242—Dry etching; Plasma etching; Reactive-ion etching of semiconductor materials of Group IV materials
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P50/00—Etching of wafers, substrates or parts of devices
    • H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
    • H10P50/26—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials
    • H10P50/264—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means
    • H10P50/266—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means by vapour etching only
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P50/00—Etching of wafers, substrates or parts of devices
    • H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
    • H10P50/26—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials
    • H10P50/264—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means
    • H10P50/266—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means by vapour etching only
    • H10P50/267—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means by vapour etching only using plasmas
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P50/00—Etching of wafers, substrates or parts of devices
    • H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
    • H10P50/28—Dry etching; Plasma etching; Reactive-ion etching of insulating materials
    • H10P50/282—Dry etching; Plasma etching; Reactive-ion etching of insulating materials of inorganic materials
    • H10P50/283—Dry etching; Plasma etching; Reactive-ion etching of insulating materials of inorganic materials by chemical means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
    • H10P70/00—Cleaning of wafers, substrates or parts of devices
    • H10P70/20—Cleaning during device manufacture
    • H10P70/27—Cleaning during device manufacture during, before or after processing of conductive materials, e.g. polysilicon or amorphous silicon layers
    • H10P70/273—Cleaning during device manufacture during, before or after processing of conductive materials, e.g. polysilicon or amorphous silicon layers the processing being a delineation of conductive layers, e.g. by RIE
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W20/00—Interconnections in chips, wafers or substrates
    • H10W20/01—Manufacture or treatment
    • H10W20/071—Manufacture or treatment of dielectric parts thereof
    • H10W20/081—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts
    • H10W20/083—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts the openings being via holes penetrating underlying conductors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
    • H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
    • H10D62/17—Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions
    • H10D62/393—Body regions of DMOS transistors or IGBTs 
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W20/00—Interconnections in chips, wafers or substrates
    • H10W20/01—Manufacture or treatment
    • H10W20/031—Manufacture or treatment of conductive parts of the interconnections
    • H10W20/032—Manufacture or treatment of conductive parts of the interconnections of conductive barrier, adhesion or liner layers
    • H10W20/033—Manufacture or treatment of conductive parts of the interconnections of conductive barrier, adhesion or liner layers in openings in dielectrics
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W20/00—Interconnections in chips, wafers or substrates
    • H10W20/01—Manufacture or treatment
    • H10W20/031—Manufacture or treatment of conductive parts of the interconnections
    • H10W20/056—Manufacture or treatment of conductive parts of the interconnections by filling conductive material into holes, grooves or trenches

Landscapes

  • Electrodes Of Semiconductors (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
JP2022080809A 2022-05-17 2022-05-17 半導体装置の製造方法 Active JP7731320B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2022080809A JP7731320B2 (ja) 2022-05-17 2022-05-17 半導体装置の製造方法
US18/177,478 US12550400B2 (en) 2022-05-17 2023-03-02 Manufacturing method of semiconductor device
CN202310543280.XA CN117080067A (zh) 2022-05-17 2023-05-15 半导体器件的制造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2022080809A JP7731320B2 (ja) 2022-05-17 2022-05-17 半導体装置の製造方法

Publications (3)

Publication Number Publication Date
JP2023169593A JP2023169593A (ja) 2023-11-30
JP2023169593A5 JP2023169593A5 (https=) 2024-09-30
JP7731320B2 true JP7731320B2 (ja) 2025-08-29

Family

ID=88712238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022080809A Active JP7731320B2 (ja) 2022-05-17 2022-05-17 半導体装置の製造方法

Country Status (3)

Country Link
US (1) US12550400B2 (https=)
JP (1) JP7731320B2 (https=)
CN (1) CN117080067A (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002368221A (ja) 2001-06-08 2002-12-20 Nec Corp 縦型ｍｏｓｆｅｔを備えた半導体装置およびその製造方法
JP2018046053A (ja) 2016-09-12 2018-03-22 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
JP2019129289A (ja) 2018-01-26 2019-08-01 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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8264033B2 (en) * 2009-07-21 2012-09-11 Infineon Technologies Austria Ag Semiconductor device having a floating semiconductor zone
JP6909666B2 (ja) * 2017-07-27 2021-07-28 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
JP7069605B2 (ja) * 2017-08-29 2022-05-18 富士電機株式会社 半導体装置の製造方法
JP7125339B2 (ja) * 2018-12-26 2022-08-24 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
WO2021010000A1 (ja) * 2019-07-12 2021-01-21 富士電機株式会社 半導体装置
JP7541454B2 (ja) * 2020-09-03 2024-08-28 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
JP7788924B2 (ja) * 2022-04-15 2025-12-19 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002368221A (ja) 2001-06-08 2002-12-20 Nec Corp 縦型ｍｏｓｆｅｔを備えた半導体装置およびその製造方法
JP2018046053A (ja) 2016-09-12 2018-03-22 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
JP2019129289A (ja) 2018-01-26 2019-08-01 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

Also Published As

Publication number Publication date
JP2023169593A (ja) 2023-11-30
CN117080067A (zh) 2023-11-17
US20230378281A1 (en) 2023-11-23
US12550400B2 (en) 2026-02-10

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