JPH11505076A - 半導体チップの背面の機械加工方法 - Google Patents
半導体チップの背面の機械加工方法Info
- Publication number
- JPH11505076A JPH11505076A JP9530121A JP53012197A JPH11505076A JP H11505076 A JPH11505076 A JP H11505076A JP 9530121 A JP9530121 A JP 9530121A JP 53012197 A JP53012197 A JP 53012197A JP H11505076 A JPH11505076 A JP H11505076A
- Authority
- JP
- Japan
- Prior art keywords
- die
- wafer
- rpm
- inch
- diamond
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 81
- 239000004065 semiconductor Substances 0.000 title claims abstract description 34
- 238000003754 machining Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000003801 milling Methods 0.000 claims abstract description 8
- 235000012431 wafers Nutrition 0.000 claims description 51
- 239000010432 diamond Substances 0.000 claims description 26
- 229910003460 diamond Inorganic materials 0.000 claims description 24
- 238000005498 polishing Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 5
- 239000012778 molding material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 2
- 238000007689 inspection Methods 0.000 abstract description 36
- 238000000386 microscopy Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 31
- 239000010703 silicon Substances 0.000 description 31
- 229910052710 silicon Inorganic materials 0.000 description 31
- 238000005516 engineering process Methods 0.000 description 12
- 238000004806 packaging method and process Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 7
- 239000000523 sample Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000002826 coolant Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000021028 berry Nutrition 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 231100001010 corrosive Toxicity 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S148/00—Metal treatment
- Y10S148/135—Removal of substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S438/00—Semiconductor device manufacturing: process
- Y10S438/977—Thinning or removal of substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/03—Processes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Sampling And Sample Adjustment (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.正面に集積回路を含む半導体チップの背面を機械加工する方法であって、前 記チップが、パッケージ内にモールド材料によって付着されており、上記方法が 、 a)3つの軸線に沿ってパッケージを移動させることが可能なフライス盤に パッケージを搭載する工程と、 b)第一の回転速度で動作する回転工具を使用して前記パッケージのモール ド材料を削り、これによって、背面を覆うモールド材料を取り除き、前記モール ド材料内に前記半導体チップをとりまくトレンチを作る工程と、;及び c)前記第一の回転速度より速い第二の回転速度で動作する回転工具を使用 して前記半導体チップの背面から半導体材料を削る工程と; を有することを特徴とする方法。 2.前記第一の回転速度が、40,000回転/分(rpm)のオーダであるこ とを特徴とする請求項1記載の方法。 3.前記第二の回転速度が、60,000rpmのオーダであることを特徴とす る請求項2に記載の方法。 4.更に、前記工程cの前に、60,000rpmのオーダの速度で動作する回 転工具を使用して背面のリードフレームのパドルを削る工程を含むことを特徴と する請求項3記載の方法。 5.さらに、 d)前記工程cの後に背面の渦巻き状の跡を取り除く工程と、及び e)背面をポリッシュペーストにてポリッシュする工程と、を含むことを特 徴とする請求項4記載の方法。 6.前記工程cが、半導体チップの厚さが200ミクロン以下に減少したときに 終了することを特徴とする請求項5記載の方法。 7.前記工程bが、0.013cm(0.005インチ)の深さで削り、前記リ ードフレームのパドルを削る工程が、8cm(3インチ)/分で移動し且つパド ルが0.0006cm(0.00025インチ)深さで削られる150グリット で直径0.318cm(0.125インチ)のダイヤモンド製エンドミル 研磨工具を使用し、前記工程dが、8cm(3インチ)/分で移動し且つ0.0 0025cm(0.0001インチ)の深さで削られる400グリットで直径0 .318cm(0.125インチ)のダイヤモンド製エンドミルが使用され、前 記工程eが、1ミクロンのダイヤモンドと、2,400rpmの速度で回転する バフ輪を用いることを特徴とする請求項6記載の方法。 8.前記工程eが、さらに、0.1ミクロンのダイヤモンドペーストと、この後 に0.05ミクロンのダイヤモンドペーストを用いることを特徴とする請求項7 記載の方法。 9.更に、前記工程cの前に、60,000rpmのオーダの速度で動作する回 転工具を使用して背面のリードフレームのパドルを削る工程を含むことを特徴と する請求項1記載の方法。 10.更に、 d)工程cの後に背面の渦巻き状の跡を取り除く工程と、及び e)背面をポリッシュペーストにてポリッシュする工程とを含むことを特徴 とする請求項9記載の方法。 11.前記工程cが、半導体チップの厚さが200ミクロン以下に減少したときに 終了することを特徴とする請求項10記載の方法。 12.正面に集積回路が形成された半導体ウェーハ内のダイの背面を機械加工する 方法であって、この方法が、 a)3つの軸線に沿ってウェーハを移動させることが可能なフライス盤にウ ェーハを搭載する工程と、および b)前記背面が200ミクロン以下まで薄くされるまで、60,000回転 /秒(rpm)のオーダの回転速度で動作する回転工具を用いて、正面にある集 積回路とは反対側にある前記ウェーハの背面から半導体を削る工程と、 を有することを特徴とする方法。 13.前記工程bは、8cm(3インチ)/分で移動し且つウェーハの各パスにお いて0.0006cm(0.00025インチ)深さを削る150グリットで直 径0.318cm(0.125インチ)のダイヤモンド製エンドミル研磨工具を 用いる請求項12に記載の方法。 14.さらに、 c)工程bの後に背面の渦巻き状の跡を取り除く工程と、および d)背面をポリッシュペーストにてポリッシュする工程と、 を含むことを特徴とする請求項12記載の方法。 15.前記工程c)は、8cm(3インチ)/分で移動し且つ0.00025cm (0.0001インチ)の深さで削る400グリットで直径0.318cm(0 .125インチ)のダイヤモンド製エンドミルを使用し、前記工程eは、1ミク ロンのダイヤモンドと、2,400rpmで回転するバフ輪を用いることを特徴 とする請求項14記載の方法。 16.前記工程d)は、さらに、0.1ミクロンのダイヤモンドペーストと、この 後に0.05ミクロンのダイヤモンドペーストを用いることを特徴とする請求項 7記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/606,638 US5698474A (en) | 1996-02-26 | 1996-02-26 | High speed diamond-based machining of silicon semiconductor die in wafer and packaged form for backside emission microscope detection |
US08/606,638 | 1996-02-26 | ||
PCT/US1996/018219 WO1997031392A1 (en) | 1996-02-26 | 1996-11-14 | High speed diamond-based machining of silicon semiconductor die in wafer and packaged form for backside emission microscope detection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11505076A true JPH11505076A (ja) | 1999-05-11 |
Family
ID=24428818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9530121A Pending JPH11505076A (ja) | 1996-02-26 | 1996-11-14 | 半導体チップの背面の機械加工方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5698474A (ja) |
EP (1) | EP0823127A4 (ja) |
JP (1) | JPH11505076A (ja) |
KR (1) | KR100433311B1 (ja) |
AU (1) | AU7731296A (ja) |
WO (1) | WO1997031392A1 (ja) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6112004A (en) * | 1998-06-01 | 2000-08-29 | Colvin; James Barry | Emission microscopy system and method |
US6134365A (en) * | 1998-06-01 | 2000-10-17 | Colvin; James Barry | Coherent illumination system and method |
US6261870B1 (en) * | 1998-08-28 | 2001-07-17 | Lsi Logic Corporation | Backside failure analysis capable integrated circuit packaging |
US6245586B1 (en) | 1998-10-09 | 2001-06-12 | James Barry Colvin | Wire-to-wire bonding system and method |
US6329212B1 (en) * | 1999-01-08 | 2001-12-11 | Advanced Micro Devices, Inc. | Process for exposing for analysis the back side of a semiconductor die mounted in a package |
US6452176B1 (en) | 1999-07-22 | 2002-09-17 | Advanced Micro Devices, Inc. | Arrangement and method for using electron channeling patterns to detect substrate damage |
US6251705B1 (en) * | 1999-10-22 | 2001-06-26 | Agere Systems Inc. | Low profile integrated circuit packages |
JP2002033361A (ja) * | 2000-07-17 | 2002-01-31 | Mitsumi Electric Co Ltd | 半導体ウェハ |
US6624643B2 (en) * | 2000-12-08 | 2003-09-23 | Intel Corporation | Apparatus and method to read output information from a backside of a silicon device |
US6790125B2 (en) * | 2000-12-11 | 2004-09-14 | International Business Machines Corporation | Backside integrated circuit die surface finishing technique and tool |
US6909111B2 (en) * | 2000-12-28 | 2005-06-21 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing a light emitting device and thin film forming apparatus |
US6672947B2 (en) * | 2001-03-13 | 2004-01-06 | Nptest, Llc | Method for global die thinning and polishing of flip-chip packaged integrated circuits |
US6630369B2 (en) | 2001-07-17 | 2003-10-07 | Ultra Tec Manufacturing, Inc. | Sample preparation apparatus and method |
US20040014401A1 (en) * | 2001-08-07 | 2004-01-22 | Chun-Cheng Tsao | Method for backside die thinning and polishing of packaged integrated circuits |
FR2830682B1 (fr) * | 2001-10-04 | 2004-07-09 | Centre Nat Etd Spatiales | Procede et dispositif d'amincissement d'une plaquette de circuit integre |
US7018268B2 (en) * | 2002-04-09 | 2006-03-28 | Strasbaugh | Protection of work piece during surface processing |
JP4344517B2 (ja) * | 2002-12-27 | 2009-10-14 | 富士通株式会社 | 半導体基板及びその製造方法 |
US6866560B1 (en) | 2003-01-09 | 2005-03-15 | Sandia Corporation | Method for thinning specimen |
US6894522B2 (en) * | 2003-10-06 | 2005-05-17 | International Business Machines Corporation | Specific site backside underlaying and micromasking method for electrical characterization of semiconductor devices |
US7015146B2 (en) * | 2004-01-06 | 2006-03-21 | International Business Machines Corporation | Method of processing backside unlayering of MOSFET devices for electrical and physical characterization including a collimated ion plasma |
US7112983B2 (en) * | 2004-11-10 | 2006-09-26 | International Business Machines Corporation | Apparatus and method for single die backside probing of semiconductor devices |
US8063656B1 (en) * | 2009-03-13 | 2011-11-22 | Xilinx, Inc. | Method of enabling a circuit board analysis |
US11940271B2 (en) | 2020-11-17 | 2024-03-26 | International Business Machines Corporation | High power device fault localization via die surface contouring |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5155068A (en) * | 1989-08-31 | 1992-10-13 | Sharp Kabushiki Kaisha | Method for manufacturing an IC module for an IC card whereby an IC device and surrounding encapsulant are thinned by material removal |
JP2513055B2 (ja) * | 1990-02-14 | 1996-07-03 | 日本電装株式会社 | 半導体装置の製造方法 |
US5273940A (en) * | 1992-06-15 | 1993-12-28 | Motorola, Inc. | Multiple chip package with thinned semiconductor chips |
US5369056A (en) * | 1993-03-29 | 1994-11-29 | Staktek Corporation | Warp-resistent ultra-thin integrated circuit package fabrication method |
US5354717A (en) * | 1993-07-29 | 1994-10-11 | Motorola, Inc. | Method for making a substrate structure with improved heat dissipation |
US5585661A (en) * | 1993-08-18 | 1996-12-17 | Harris Corporation | Sub-micron bonded SOI by trench planarization |
US5475316A (en) * | 1993-12-27 | 1995-12-12 | Hypervision, Inc. | Transportable image emission microscope |
EP0668611A1 (en) * | 1994-02-22 | 1995-08-23 | International Business Machines Corporation | Method for recovering bare semiconductor chips from plastic packaged modules |
BE1008384A3 (nl) * | 1994-05-24 | 1996-04-02 | Koninkl Philips Electronics Nv | Werkwijze voor het vervaardigen van halfgeleiderinrichtingen met halfgeleiderelementen gevormd in een op een dragerplak aangebrachte laag halfgeleidermateriaal. |
-
1996
- 1996-02-26 US US08/606,638 patent/US5698474A/en not_active Expired - Fee Related
- 1996-11-14 KR KR1019970707691A patent/KR100433311B1/ko not_active IP Right Cessation
- 1996-11-14 JP JP9530121A patent/JPH11505076A/ja active Pending
- 1996-11-14 AU AU77312/96A patent/AU7731296A/en not_active Abandoned
- 1996-11-14 WO PCT/US1996/018219 patent/WO1997031392A1/en not_active Application Discontinuation
- 1996-11-14 EP EP96940427A patent/EP0823127A4/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO1997031392A1 (en) | 1997-08-28 |
EP0823127A4 (en) | 2001-03-14 |
KR100433311B1 (ko) | 2004-09-18 |
AU7731296A (en) | 1997-09-10 |
US5698474A (en) | 1997-12-16 |
EP0823127A1 (en) | 1998-02-11 |
KR19990008166A (ko) | 1999-01-25 |
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