KR20060091087A - 트랜치형 전계 효과 트랜지스터 및 이의 제조 방법 - Google Patents
트랜치형 전계 효과 트랜지스터 및 이의 제조 방법 Download PDFInfo
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- KR20060091087A KR20060091087A KR1020050011775A KR20050011775A KR20060091087A KR 20060091087 A KR20060091087 A KR 20060091087A KR 1020050011775 A KR1020050011775 A KR 1020050011775A KR 20050011775 A KR20050011775 A KR 20050011775A KR 20060091087 A KR20060091087 A KR 20060091087A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 210000000746 body region Anatomy 0.000 claims description 28
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 239000005380 borophosphosilicate glass Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 description 11
- 238000000151 deposition Methods 0.000 description 8
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 229920005591 polysilicon Polymers 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- GDFCWFBWQUEQIJ-UHFFFAOYSA-N [B].[P] Chemical compound [B].[P] GDFCWFBWQUEQIJ-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
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- 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
-
- 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
- H01L29/1025—Channel region of field-effect devices
- H01L29/1029—Channel region of field-effect devices of field-effect transistors
- H01L29/1033—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure
- H01L29/1037—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure and non-planar channel
-
- 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
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims (11)
- 일정 깊이로 형성된 다중 프로파일의 트랜치를 구비하는 기판과;게이트 전극과;상기 게이트 전극 상부에 형성된 절연막을 구비하며,상기 게이트 전극 및 절연막은 상기 다중 프로파일의 트랜치 내부에 형성되는 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터.
- 제 1항에 있어서,상기 기판은 드레인 영역 및 상기 드레인 영역 상에 형성된 바디 영역을 구비하며,상기 트랜치는 상기 드레인 영역 및 바디 영역에 일정 깊이로 형성된 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터.
- 제 2항에 있어서,상기 다중 프로파일의 트랜치는 제 1 트랜치 및 상기 제 1 트랜치 내의 일부분에 형성된 제 2 트랜치로 이루어지는 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터.
- 제 3항에 있어서,상기 제 1 트랜치는 상기 바디 영역에 일정 깊이로 형성되며,상기 제 2 트랜치는 상기 바디 영역 및 드레인 영역에 일정 깊이로 형성된 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터.
- 제 4항에 있어서,상기 바디 영역의 일부분에 형성된 소오스 영역을 더 구비하며,상기 소오스 영역은 상기 제 1 트랜치를 측벽 및 하부면을 따라 형성된 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터.
- 제 3항에 있어서,상기 게이트 전극은 상기 제 2 트랜치의 내부를 채우며 형성되며,상기 절연막은 상기 게이트 전극의 상부에 형성되어 상기 제 1 트랜치의 내부를 채우는 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터.
- 제 3항에 있어서,상기 제 2 트랜치의 표면에는 산화막을 더 구비하여 상기 게이트 전극을 절연시키는 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터.
- 제 1항에 있어서,상기 절연막은 PE-TEOS막, PE-SiO2막, LTO막, BPSG막 및 이들의 적층막 중 어느 하나로 이루어지는 것을 특징으로 하는 전계 효과 트랜지스터.
- 기판에 제 1 트랜치 및 상기 제 1 트랜치 내부에 형성된 제 2 트랜치를 일정 깊이로 형성하는 단계와;상기 제 2 트랜치 내부를 채우는 게이트 전극을 형성하는 단계와;상기 게이트 전극의 상부에 형성되며, 상기 제 1 트랜치를 채우는 절연막을 형성하는 단계를 포함하는 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터의 제조 방법.
- 제 9항에 있어서,상기 제 1 트랜치 및 제 2 트랜치를 형성한 후,상기 제 2 트랜치의 표면을 따라 상기 게이트 전극을 절연시키는 산화막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터의 제조 방법.
- 제 9항에 있어서,상기 절연막이 형성된 기판의 상ㆍ하면에 드레인 전극 및 소오스 전극을 형성하는 단계를 더 포함하는 것을 특징으로 하는 트랜치형 전계 효과 트랜지스터의 제조 방법.
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KR1020050011775A KR100777157B1 (ko) | 2005-02-14 | 2005-02-14 | 트랜치형 전계 효과 트랜지스터 및 이의 제조 방법 |
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KR19990004401A (ko) * | 1997-06-27 | 1999-01-15 | 김영환 | 반도체 소자의 트랜지스터 제조 방법 |
KR19990024787A (ko) * | 1997-09-08 | 1999-04-06 | 구본준 | 반도체 소자의 구조 및 제조 방법 |
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JP2003008010A (ja) | 2001-06-27 | 2003-01-10 | Sony Corp | 二重溝ゲート型トランジスタの製造方法 |
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