DE69933225D1 - Leiterplattensubstrat mit hoher dichte und herstellungsmethode - Google Patents

Leiterplattensubstrat mit hoher dichte und herstellungsmethode

Info

Publication number
DE69933225D1
DE69933225D1 DE69933225T DE69933225T DE69933225D1 DE 69933225 D1 DE69933225 D1 DE 69933225D1 DE 69933225 T DE69933225 T DE 69933225T DE 69933225 T DE69933225 T DE 69933225T DE 69933225 D1 DE69933225 D1 DE 69933225D1
Authority
DE
Germany
Prior art keywords
manufacturing
high density
pcb substrate
dielectric layer
density pcb
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.)
Expired - Lifetime
Application number
DE69933225T
Other languages
English (en)
Other versions
DE69933225T2 (de
Inventor
J Pommer
T Gotro
M Androff
D Hein
J Zarecki
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.)
Isola Laminate Systems Corp
Original Assignee
Isola Laminate Systems 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 Isola Laminate Systems Corp filed Critical Isola Laminate Systems Corp
Publication of DE69933225D1 publication Critical patent/DE69933225D1/de
Application granted granted Critical
Publication of DE69933225T2 publication Critical patent/DE69933225T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/30Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/02Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
    • H05K3/022Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/52Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
    • H01L23/538Arrangements 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
    • H01L23/5383Multilayer substrates
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0313Organic insulating material
    • H05K1/0353Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
    • H05K1/0366Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/38Improvement of the adhesion between the insulating substrate and the metal
    • H05K3/388Improvement of the adhesion between the insulating substrate and the metal by the use of a metallic or inorganic thin film adhesion layer
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/10Bump connectors; Manufacturing methods related thereto
    • H01L2224/15Structure, shape, material or disposition of the bump connectors after the connecting process
    • H01L2224/16Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
    • H01L2224/161Disposition
    • H01L2224/16151Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/16221Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/16225Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/00014Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/151Die mounting substrate
    • H01L2924/153Connection portion
    • H01L2924/1531Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
    • H01L2924/15311Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/02Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0275Fibers and reinforcement materials
    • H05K2201/029Woven fibrous reinforcement or textile
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/02Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0275Fibers and reinforcement materials
    • H05K2201/0296Fibers with a special cross-section, e.g. elliptical
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/901Printed circuit
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)
  • Structure Of Printed Boards (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
DE69933225T 1998-07-28 1999-07-22 Leiterplattensubstrat mit hoher dichte und herstellungsmethode Expired - Lifetime DE69933225T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US123952 1998-07-28
US09/123,952 US6242078B1 (en) 1998-07-28 1998-07-28 High density printed circuit substrate and method of fabrication
PCT/US1999/016803 WO2000007219A2 (en) 1998-07-28 1999-07-22 High density printed circuit substrate and method of fabrication

Publications (2)

Publication Number Publication Date
DE69933225D1 true DE69933225D1 (de) 2006-10-26
DE69933225T2 DE69933225T2 (de) 2007-09-20

Family

ID=22411883

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69933225T Expired - Lifetime DE69933225T2 (de) 1998-07-28 1999-07-22 Leiterplattensubstrat mit hoher dichte und herstellungsmethode

Country Status (11)

Country Link
US (1) US6242078B1 (de)
EP (1) EP1103168B1 (de)
JP (1) JP2002521835A (de)
KR (1) KR20010053614A (de)
CN (1) CN1314072A (de)
AT (1) ATE339873T1 (de)
AU (1) AU5127499A (de)
DE (1) DE69933225T2 (de)
ES (1) ES2274632T3 (de)
TW (1) TW507494B (de)
WO (1) WO2000007219A2 (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6141870A (en) * 1997-08-04 2000-11-07 Peter K. Trzyna Method for making electrical device
SG82591A1 (en) * 1998-12-17 2001-08-21 Eriston Technologies Pte Ltd Bumpless flip chip assembly with solder via
US6613413B1 (en) * 1999-04-26 2003-09-02 International Business Machines Corporation Porous power and ground planes for reduced PCB delamination and better reliability
SE523150C2 (sv) * 2000-01-14 2004-03-30 Ericsson Telefon Ab L M Kretsmönsterkort och metod för tillverkning av kretsmönsterkort med tunt kopparskikt
DE10018025A1 (de) * 2000-04-04 2001-10-18 Atotech Deutschland Gmbh Verfahren zum Erzeugen von lötfähigen Oberflächen und funktionellen Oberflächen auf Schaltungsträgern
KR100509058B1 (ko) * 2000-04-11 2005-08-18 엘지전자 주식회사 인쇄회로기판의 제조방법
JP4023076B2 (ja) * 2000-07-27 2007-12-19 富士通株式会社 表裏導通基板及びその製造方法
JP2002111185A (ja) * 2000-10-03 2002-04-12 Sony Chem Corp バンプ付き配線回路基板及びその製造方法
DE10109786A1 (de) * 2001-02-28 2002-12-12 Fractal Ag Verfahren zur Herstellung von Leiterplatten
TW560102B (en) * 2001-09-12 2003-11-01 Itn Energy Systems Inc Thin-film electrochemical devices on fibrous or ribbon-like substrates and methd for their manufacture and design
US7258819B2 (en) 2001-10-11 2007-08-21 Littelfuse, Inc. Voltage variable substrate material
DE10392524B4 (de) * 2002-04-08 2008-08-07 OTC Littelfuse, Inc., Des Plaines Vorrichtungen mit spannungsvariablem Material zur direkten Anwendung
US7132922B2 (en) * 2002-04-08 2006-11-07 Littelfuse, Inc. Direct application voltage variable material, components thereof and devices employing same
US7183891B2 (en) * 2002-04-08 2007-02-27 Littelfuse, Inc. Direct application voltage variable material, devices employing same and methods of manufacturing such devices
US6596384B1 (en) * 2002-04-09 2003-07-22 International Business Machines Corporation Selectively roughening conductors for high frequency printed wiring boards
US7438969B2 (en) * 2002-07-10 2008-10-21 Ngk Spark Plug Co., Ltd. Filling material, multilayer wiring board, and process of producing multilayer wiring board
US7060364B2 (en) * 2002-12-26 2006-06-13 Mitsui Mining & Smelting Co., Ltd. Film carrier tape for mounting electronic devices thereon
US6960831B2 (en) * 2003-09-25 2005-11-01 International Business Machines Corporation Semiconductor device having a composite layer in addition to a barrier layer between copper wiring and aluminum bond pad
JP2005202382A (ja) * 2003-12-18 2005-07-28 Sumitomo Bakelite Co Ltd 光プリント回路基板、面実装型半導体パッケージ、及びマザーボード
US20060152334A1 (en) * 2005-01-10 2006-07-13 Nathaniel Maercklein Electrostatic discharge protection for embedded components
JP4520392B2 (ja) * 2005-05-12 2010-08-04 株式会社丸和製作所 プリント基板の製造方法
WO2008112068A1 (en) * 2007-02-20 2008-09-18 Dynamic Details, Inc. Multilayer printed wiring boards with copper filled through-holes
US20080318413A1 (en) * 2007-06-21 2008-12-25 General Electric Company Method for making an interconnect structure and interconnect component recovery process
EP2129199A1 (de) * 2008-05-28 2009-12-02 LG Electronics Inc. Verfahren zur Herstellung von flexibler Folie
DE102009028194B3 (de) * 2009-08-03 2011-03-24 Robert Bosch Gmbh Sensorelement mit Durchkontaktierloch
TWI405317B (zh) * 2010-03-04 2013-08-11 Unimicron Technology Corp 封裝基板及其製法
US8693203B2 (en) 2011-01-14 2014-04-08 Harris Corporation Method of making an electronic device having a liquid crystal polymer solder mask laminated to an interconnect layer stack and related devices
JP6099453B2 (ja) * 2012-11-28 2017-03-22 Dowaメタルテック株式会社 電子部品搭載基板およびその製造方法
TWI462672B (zh) * 2013-02-08 2014-11-21 Ichia Tech Inc 前驅基板、軟性印刷電路板及其製造方法
WO2016007718A1 (en) * 2014-07-10 2016-01-14 Isola Usa Corp. Thin resin films and their use in layups
WO2016100405A1 (en) * 2014-12-16 2016-06-23 Amphenol Corporation High-speed interconnects for printed circuit boards
KR20210143727A (ko) * 2019-03-27 2021-11-29 미쓰이금속광업주식회사 프린트 배선판용 금속박, 캐리어를 구비하는 금속박 및 금속 클래드 적층판, 그리고 그것들을 사용한 프린트 배선판의 제조 방법
CN112020232B (zh) * 2020-08-27 2021-12-28 湖南维胜科技电路板有限公司 一种pcb印制电路板的uv烘烤炉
JP2022187865A (ja) * 2021-06-08 2022-12-20 新光電気工業株式会社 配線基板及びその製造方法

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE332214B (de) * 1968-07-12 1971-02-01 Gylling & Co
US4288282A (en) * 1979-09-28 1981-09-08 Hewlett-Packard Company Method for producing a metallic pattern upon a substrate
US5217796A (en) * 1985-02-19 1993-06-08 Nitto Boseki Co., Ltd. Woven material of inorganic fiber and process for making the same
US4707565A (en) * 1985-03-19 1987-11-17 Nitto Boseki Co., Ltd. Substrate for printed circuit
CA1298451C (en) 1985-08-02 1992-04-07 Hiromi Shigemoto Surface-roughened film and sheet, and process for production and use thereof
US4863808A (en) 1985-09-13 1989-09-05 Gould Inc. Copper-chromium-polyimide composite
EP0227857B1 (de) 1985-12-30 1990-03-28 Ibm Deutschland Gmbh Verfahren zum Herstellen von gedruckten Schaltungen
JPS6417874A (en) 1987-07-10 1989-01-20 Ibm Metallizing method
US4869930A (en) 1987-07-10 1989-09-26 International Business Machines Corporation Method for preparing substrates for deposition of metal seed from an organometallic vapor for subsequent electroless metallization
JPH0744320B2 (ja) * 1989-10-20 1995-05-15 松下電器産業株式会社 樹脂回路基板及びその製造方法
JP2993065B2 (ja) * 1990-07-27 1999-12-20 三菱瓦斯化学株式会社 表面平滑金属箔張積層板
JP3014421B2 (ja) 1990-08-22 2000-02-28 三井化学株式会社 多層プリント基板の外装板粗面化用マットフィルム
EP0520236A2 (de) 1991-06-25 1992-12-30 E.I. Du Pont De Nemours And Company Polyimide auf Basis von 9-Aryl-9-(perfluoroalkyl)-xanthen-2,3,6,7-dianhydrid oder 9,9'-bis-(perfluoroalkyl)-xanthen-2,3,6,7-dianhydrid und Benzidinderivaten
US5288541A (en) 1991-10-17 1994-02-22 International Business Machines Corporation Method for metallizing through holes in thin film substrates, and resulting devices
DE4236334A1 (de) * 1992-10-28 1994-05-05 Bosch Gmbh Robert Monolithisch integriertes MOS-Endstufenbauteil mit einer Überlast-Schutzeinrichtung
US5622769A (en) 1993-02-12 1997-04-22 Kabushiki Kaisha Toshiba Ceramic circuit board having a thermal conductivity substrate
US5622789A (en) 1994-09-12 1997-04-22 Apple Computer, Inc. Battery cell having an internal circuit for controlling its operation
JP3862770B2 (ja) * 1995-09-07 2006-12-27 日立化成工業株式会社 金属張積層板の製造方法
JP3155920B2 (ja) * 1996-01-16 2001-04-16 三井金属鉱業株式会社 プリント配線板用電解銅箔及びその製造方法
US6544584B1 (en) * 1997-03-07 2003-04-08 International Business Machines Corporation Process for removal of undesirable conductive material on a circuitized substrate and resultant circuitized substrate

Also Published As

Publication number Publication date
JP2002521835A (ja) 2002-07-16
US6242078B1 (en) 2001-06-05
ES2274632T3 (es) 2007-05-16
WO2000007219A2 (en) 2000-02-10
KR20010053614A (ko) 2001-06-25
CN1314072A (zh) 2001-09-19
DE69933225T2 (de) 2007-09-20
EP1103168B1 (de) 2006-09-13
ATE339873T1 (de) 2006-10-15
TW507494B (en) 2002-10-21
WO2000007219A3 (en) 2000-05-11
EP1103168A2 (de) 2001-05-30
AU5127499A (en) 2000-02-21

Similar Documents

Publication Publication Date Title
DE69933225D1 (de) Leiterplattensubstrat mit hoher dichte und herstellungsmethode
MY125599A (en) Printed circuit boards and method of producing the same
FI20020190A0 (fi) Menetelmõ komponentin upottamiseksi alustaan ja kontaktin muodostamiseksi
MY117854A (en) Printed circuit board with embedded decoupling capacitance and method for producing same
ES2089467T3 (es) Estructura de blindaje electromagnetico y metodo para su fabricacion.
MY120077A (en) Multilayer printed wiring board having a roughened inner conductor layer and production method thereof
TW243584B (en) Apparatus having inner layers supporting surface-mount components and a method of manufacturing the same
ATE207227T1 (de) Chipkarte, verfahren zur herstellung einer chipkarte und halbleiterchip zur verwendung in einer chipkarte
PT1459332E (pt) Processo para produção de uma camada de resistência condutora eléctrica, bem como dispositivo de aquecimento e/ou arrefecimento
TW200603703A (en) Circuitized substrate, method of making same, electrical assembly utilizing same, and information handling system utilizing same
DE3682150D1 (de) Anisotrop elektrisch leitfaehiger gegenstand.
ATE350885T1 (de) Methode zur herstellung von multifunktionellen mikrowellen-modulen aus fluoropolymer kompositsubstraten
MXPA04002482A (es) Etiqueta de seguridad y procedimiento para fabricar la misma.
MY117104A (en) Design of high density structures with laser etch stop
KR101352819B1 (ko) 프린트 기판의 제조 방법 및 이것을 이용한 프린트 기판
IL128055A (en) Method for making printed circuits and resulting printed circuit
HUP0002959A2 (hu) Transzponder, valamint eljárás transzponder és transzpondertekercs előállítására
MY120367A (en) Composite material used in making printed wiring boards.
ATE369030T1 (de) Verfahren zur durchführung von elektronischen bauteilen in durchgangslöchern eines mehrschichtigen multichip-moduls
MY140777A (en) Method of manufacturing copper foil with insulating layer
SE0000097D0 (sv) Kretsmönsterkort och metod för tillverkning av kretsmönsterkort med tunt kopparskikt
KR920005460B1 (ko) 미세한 선폭의 회로패턴 형성방법
TW350077B (en) Chip-shaped electronic parts and the manufacturing method
KR950001266B1 (ko) 알루미늄 회로기판의 제조방법 및 그 회로기판
TW200517031A (en) Co-dielectric structure of circuit board

Legal Events

Date Code Title Description
8364 No opposition during term of opposition