JPH01501189A - Mos集積回路の形成方法 - Google Patents
Mos集積回路の形成方法Info
- Publication number
- JPH01501189A JPH01501189A JP62506131A JP50613187A JPH01501189A JP H01501189 A JPH01501189 A JP H01501189A JP 62506131 A JP62506131 A JP 62506131A JP 50613187 A JP50613187 A JP 50613187A JP H01501189 A JPH01501189 A JP H01501189A
- Authority
- JP
- Japan
- Prior art keywords
- forming
- silicon
- layer
- mask
- source
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 28
- 229910052710 silicon Inorganic materials 0.000 claims description 39
- 239000010703 silicon Substances 0.000 claims description 39
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 38
- 238000002513 implantation Methods 0.000 claims description 19
- 239000007943 implant Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000005530 etching Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 238000005382 thermal cycling Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 34
- 238000012545 processing Methods 0.000 description 12
- 238000000137 annealing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 229920002120 photoresistant polymer Polymers 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 238000005280 amorphization Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000219112 Cucumis Species 0.000 description 2
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000000992 sputter etching Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 1
- GVGLGOZIDCSQPN-PVHGPHFFSA-N Heroin Chemical compound O([C@H]1[C@H](C=C[C@H]23)OC(C)=O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4OC(C)=O GVGLGOZIDCSQPN-PVHGPHFFSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 235000019406 chloropentafluoroethane Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- WMIYKQLTONQJES-UHFFFAOYSA-N hexafluoroethane Chemical compound FC(F)(F)C(F)(F)F WMIYKQLTONQJES-UHFFFAOYSA-N 0.000 description 1
- 239000002784 hot electron Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- -1 silicon ion Chemical class 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- ZFXYFBGIUFBOJW-UHFFFAOYSA-N theophylline Chemical compound O=C1N(C)C(=O)N(C)C2=C1NC=N2 ZFXYFBGIUFBOJW-UHFFFAOYSA-N 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
-
- 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
- H01L29/08—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 carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/0843—Source or drain regions of field-effect devices
- H01L29/0847—Source or drain regions of field-effect devices of field-effect transistors with insulated gate
-
- 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
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
- H01L21/266—Bombardment with radiation with high-energy radiation producing ion implantation using masks
-
- 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
- H01L29/107—Substrate region of field-effect devices
- H01L29/1075—Substrate region of field-effect devices of field-effect transistors
- H01L29/1079—Substrate region of field-effect devices of field-effect transistors with insulated gate
- H01L29/1083—Substrate region of field-effect devices of field-effect transistors with insulated gate with an inactive supplementary region, e.g. for preventing punch-through, improving capacity effect or leakage current
-
- 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
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66575—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate
- H01L29/6659—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate with both lightly doped source and drain extensions and source and drain self-aligned to the sides of the gate, e.g. lightly doped drain [LDD] MOSFET, double diffused drain [DDD] MOSFET
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims (5)
- 1.装置のアクティブ領域を有する基板にMOS集積回路を形成する方法であっ て、前記装置アクティブ領域の上に約150〜200ナノメートル厚のシリコン 層(13)を形成し、ソース及びドレイン領域(25)の端部境界を規定する端 境界(16)を有する前記シリコン層(13)の上にマスク(14)を形成し、 前記シリコン層を貫通するよう比較的高いエネルギ注入ドーズを前記構造に与え 前記ソース及びドレイン領域(25)の表面近接基板領域に比較的高いドープド 注入を形成し、前記マスク(14)の存在下で前記シリコン層(13)をエッチ ングして前記シリコンを前記マスク(14)の前記端境界(16)の下に所定の 距離だけ選ばれた横方向が切込まれたゲート電極(19)にパターン化し、前記 マスク(14)を除去し、前記構造を前記高いエネルギ注入と同一導電形の比較 的低いエネルギ注入を与え前記ソース及びドレイン領域及び前記ダート電極(1 9)と自己整列した軽いドープド注入を形成し、熱サイクルを与えて注入された 種を活性化し、ドライブ・インして前記ソース及びドレイン領域(25)及び共 同する軽いドープド領域(22)を形成する各工程を含むMOS集積回路の形成 方法。
- 2.前記シリコン上に導通シャント層(29)を形成する工程を含む請求の範囲 1項記載の形成方法。
- 3.前記低エネルギ注入に続き、前記構造は軽いドープド領域(22)のまわり にガード・バンド.ドープド領域(24)を形成するようにした第2の低工ネル ギ反対導電形注入を受ける工程を含む請求の範囲2項記載の形成方法。
- 4.前記熱サイクルの後、二酸化シリコンの一致層(26)が前記構造の上にデ ポジットされ、異方性エッチングを受けさせ、前記層の水平部を除去してゲート 側壁酸化物スペーサ(27)を与える各工程を含む請求の範囲3項記載の形成方 法。
- 5.前記シリコン層(13)に窒化シリコン層(30)を形成する工程は前記マ スクと一致し、前記構造に比較的低エネルギ注入を受けさせる前記工程の後、そ の窒化物上面ではなく前記ゲート電極(19)のマスクされていない側壁を熱酸 化するようにした熱酸化工程を行う各工程を含む請求の範囲1項記載の形成方法 。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US922,221 | 1986-10-23 | ||
US06/922,221 US4682404A (en) | 1986-10-23 | 1986-10-23 | MOSFET process using implantation through silicon |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01501189A true JPH01501189A (ja) | 1989-04-20 |
JP2626681B2 JP2626681B2 (ja) | 1997-07-02 |
Family
ID=25446720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62506131A Expired - Fee Related JP2626681B2 (ja) | 1986-10-23 | 1987-10-05 | Mos集積回路の形成方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US4682404A (ja) |
EP (1) | EP0289534B1 (ja) |
JP (1) | JP2626681B2 (ja) |
DE (1) | DE3786785T2 (ja) |
WO (1) | WO1988003329A1 (ja) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4876213A (en) * | 1988-10-31 | 1989-10-24 | Motorola, Inc. | Salicided source/drain structure |
US5563093A (en) * | 1993-01-28 | 1996-10-08 | Kawasaki Steel Corporation | Method of manufacturing fet semiconductor devices with polysilicon gate having large grain sizes |
KR0171732B1 (ko) * | 1993-11-26 | 1999-03-30 | 김주용 | 모스 트랜지스터 및 그 제조방법 |
KR970003837B1 (en) * | 1993-12-16 | 1997-03-22 | Lg Semicon Co Ltd | Fabrication of mosfet |
KR100189964B1 (ko) * | 1994-05-16 | 1999-06-01 | 윤종용 | 고전압 트랜지스터 및 그 제조방법 |
KR960042942A (ko) * | 1995-05-04 | 1996-12-21 | 빈센트 비.인그라시아 | 반도체 디바이스 형성 방법 |
JPH09129848A (ja) * | 1995-11-06 | 1997-05-16 | Mitsubishi Electric Corp | キャパシタを有する半導体装置の製造方法 |
US5923984A (en) * | 1997-04-21 | 1999-07-13 | Advanced Micro Devices, Inc. | Method of making enhancement-mode and depletion-mode IGFETS with different gate materials |
US5929496A (en) * | 1997-12-18 | 1999-07-27 | Gardner; Mark I. | Method and structure for channel length reduction in insulated gate field effect transistors |
US6207516B1 (en) * | 1998-12-17 | 2001-03-27 | United Microelectronics Corp. | Method of fabricating gate oxide layer with different thickness |
US6284672B1 (en) * | 1999-03-02 | 2001-09-04 | Advanced Micro Devices, Inc. | Method of forming a super-shallow amorphous layer in silicon |
US6429124B1 (en) * | 1999-04-14 | 2002-08-06 | Micron Technology, Inc. | Local interconnect structures for integrated circuits and methods for making the same |
TW410382B (en) * | 1999-06-11 | 2000-11-01 | United Microelectronics Corp | Method of manufacturing forming metal oxide semiconductor transistor with raised source/drain |
JP4620282B2 (ja) * | 2001-04-24 | 2011-01-26 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
US6885078B2 (en) * | 2001-11-09 | 2005-04-26 | Lsi Logic Corporation | Circuit isolation utilizing MeV implantation |
TWI301669B (en) * | 2002-09-12 | 2008-10-01 | Au Optronics Corp | Method of forming lightly doped drains |
JP2004221246A (ja) * | 2003-01-14 | 2004-08-05 | Seiko Epson Corp | 半導体装置及びその製造方法 |
JP4725451B2 (ja) * | 2006-03-27 | 2011-07-13 | ヤマハ株式会社 | 絶縁ゲート型電界効果トランジスタの製法 |
US9478467B2 (en) | 2014-11-17 | 2016-10-25 | Freescale Semiconductor, Inc. | Semiconductor device including power and logic devices and related fabrication methods |
US11152381B1 (en) * | 2020-04-13 | 2021-10-19 | HeFeChip Corporation Limited | MOS transistor having lower gate-to-source/drain breakdown voltage and one-time programmable memory device using the same |
US11114140B1 (en) | 2020-04-23 | 2021-09-07 | HeFeChip Corporation Limited | One time programmable (OTP) bits for physically unclonable functions |
US11437082B2 (en) | 2020-05-17 | 2022-09-06 | HeFeChip Corporation Limited | Physically unclonable function circuit having lower gate-to-source/drain breakdown voltage |
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US4599118A (en) * | 1981-12-30 | 1986-07-08 | Mostek Corporation | Method of making MOSFET by multiple implantations followed by a diffusion step |
US4536944A (en) * | 1982-12-29 | 1985-08-27 | International Business Machines Corporation | Method of making ROM/PLA semiconductor device by late stage personalization |
JPS59220971A (ja) * | 1983-05-31 | 1984-12-12 | Toshiba Corp | 半導体装置の製造方法 |
JPS6063961A (ja) * | 1983-08-30 | 1985-04-12 | Fujitsu Ltd | 半導体装置の製造方法 |
JPS60245281A (ja) * | 1984-05-21 | 1985-12-05 | Matsushita Electronics Corp | 半導体装置の製造方法 |
-
1986
- 1986-10-23 US US06/922,221 patent/US4682404A/en not_active Expired - Lifetime
-
1987
- 1987-10-05 DE DE87906729T patent/DE3786785T2/de not_active Expired - Lifetime
- 1987-10-05 JP JP62506131A patent/JP2626681B2/ja not_active Expired - Fee Related
- 1987-10-05 EP EP87906729A patent/EP0289534B1/en not_active Expired - Lifetime
- 1987-10-05 WO PCT/US1987/002523 patent/WO1988003329A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE3786785T2 (de) | 1994-02-24 |
JP2626681B2 (ja) | 1997-07-02 |
WO1988003329A1 (en) | 1988-05-05 |
EP0289534A1 (en) | 1988-11-09 |
US4682404A (en) | 1987-07-28 |
EP0289534B1 (en) | 1993-07-28 |
DE3786785D1 (de) | 1993-09-02 |
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