WO2004006331A1 - 多層配線回路モジュール及びその製造方法 - Google Patents
多層配線回路モジュール及びその製造方法 Download PDFInfo
- Publication number
- WO2004006331A1 WO2004006331A1 PCT/JP2003/007826 JP0307826W WO2004006331A1 WO 2004006331 A1 WO2004006331 A1 WO 2004006331A1 JP 0307826 W JP0307826 W JP 0307826W WO 2004006331 A1 WO2004006331 A1 WO 2004006331A1
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- WO
- WIPO (PCT)
- Prior art keywords
- layer
- wiring
- circuit module
- insulating layer
- forming
- Prior art date
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Classifications
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
- H01L23/3121—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed a substrate forming part of the encapsulation
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- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
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- 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
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
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- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
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- H01L23/5389—Arrangements 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 the chips being integrally enclosed by the interconnect and support structures
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- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/065—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L27/00
- H01L25/0655—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L27/00 the devices being arranged next to each other
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/465—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits by applying an insulating layer having channels for the next circuit layer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
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- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4682—Manufacture of core-less build-up multilayer circuits on a temporary carrier or on a metal foil
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- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
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- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68345—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used as a support during the manufacture of self supporting substrates
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- H01L2224/01—Means 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
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
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- H01L2224/73201—Location after the connecting process on the same surface
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- H01L2224/73204—Bump and layer connectors the bump connector being embedded into the layer connector
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01078—Platinum [Pt]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection 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
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
- H01L2924/1815—Shape
- H01L2924/1816—Exposing the passive side of the semiconductor or solid-state body
- H01L2924/18161—Exposing the passive side of the semiconductor or solid-state body of a flip chip
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
- H01L2924/1901—Structure
- H01L2924/1904—Component type
- H01L2924/19041—Component type being a capacitor
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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- H01L2924/301—Electrical effects
- H01L2924/3025—Electromagnetic shielding
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/025—Abrading, e.g. grinding or sand blasting
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
- H05K2203/0703—Plating
- H05K2203/0733—Method for plating stud vias, i.e. massive vias formed by plating the bottom of a hole without plating on the walls
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0017—Etching of the substrate by chemical or physical means
- H05K3/0023—Etching of the substrate by chemical or physical means by exposure and development of a photosensitive insulating layer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/20—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern
- H05K3/205—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern using a pattern electroplated or electroformed on a metallic carrier
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/284—Applying non-metallic protective coatings for encapsulating mounted components
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/42—Plated through-holes or plated via connections
- H05K3/423—Plated through-holes or plated via connections characterised by electroplating method
Definitions
- the present invention relates to a multilayer wiring circuit module having a reduced thickness and a higher density wiring, and a method for manufacturing the same.
- Some multi-chip circuit modules constitute a so-called system LSI equipped with circuits having different functions such as, for example, a mouth function and a memory function or an analog function and a digital function.
- the functional blocks of each process are manufactured as individual semiconductor chips, and these semiconductor chips are mounted on the same substrate to form a so-called multi-chip circuit module.
- FIG. 1 shows a flip-chip type multi-chip circuit module 100 having a plurality of semiconductor chips 102 A and 102 B mounted on a main surface 101 a of an interposer 101.
- FIG. 1 shows a flip-chip type multi-chip circuit module 100 having a plurality of semiconductor chips 102 A and 102 B mounted on a main surface 101 a of an interposer 101.
- appropriate circuit patterns, lands, input / output terminals, and the like are formed on the front and back main surfaces 101a and 101b of the interface 101, respectively.
- the multi-chip circuit module 100 mounts each semiconductor chip 102 on the main surface 101a of the interposer 101 by flip-chip connection on a predetermined land 103, and covers a connection portion with an underfill 104. are doing.
- solder poles 105 are mounted on the lands formed on the main surface 101b of the ink-jet printer 101, respectively. It is mounted by processing and melting and solidifying the solder pole 105.
- the conventional multichip circuit module 100 a plurality of semiconductor chips 102 are mounted in a state of being arranged side by side on the main surface 101a of the interposer 101. Is limited by the circuit pattern formed on the interposer 101 side.
- the multi-chip circuit module 100 is provided with a large number of semiconductor chips 102 in accordance with an increase in the number of functions and an increase in the speed of a device on which the module 100 is mounted, and thus requires a larger number of wires.
- the pitch of the wiring pattern formed on the interposer 101 manufactured by a general Since it is as large as about 100 m, a large area or multilayered interposer 101 is required when many connections are made between a plurality of semiconductor chips 102.
- the multi-chip circuit module 100 when a multi-layered interposer 101 is used, interlayer connection via vias and connection between each semiconductor chip 102 are performed. Is at least about 50 im, and the land diameter is at least about 50 im, so a large interposer 101 is required.
- the wiring pattern formed in the interposer 101 connecting the semiconductor chips 102 becomes longer, and more vias are formed. ⁇
- the R component increased. For example, in a semiconductor device manufacturing process, after forming an insulating layer on a silicon substrate, a fine wiring pattern is formed through a dry etching step of forming a via groove and a wiring groove and a film forming step of a conductive metal layer. Forming techniques have also been proposed.
- a first dry etching process is performed on an insulating layer to form a large number of via grooves, and a second dry etching process is performed to form a wiring groove pattern.
- a copper film layer is formed on the entire surface of an insulating layer by, for example, plating, and then the copper film layer is polished to form a via hole and a predetermined wiring pattern.
- a finer and higher-density wiring is formed as compared with a general wiring forming method in which a via hole is formed by mechanical processing or laser processing, and a copper foil is etched to form a circuit pattern.
- Wiring patterns can be formed in multiple layers.
- this wiring forming method it is necessary to perform a precise first dry etching process and a second dry etching process with different groove depths, and to manufacture a general multilayer wiring substrate. Difficult to apply to the process.
- this wiring forming method since a wiring layer is formed in multiple layers on a silicon substrate, the mounting structure on a mother board or the like becomes complicated, making it difficult to realize miniaturization and increasing the wiring pattern. There is a problem. Disclosure of the invention An object of the present invention is to provide a novel multilayer wiring circuit module and a method for manufacturing the same, which can solve the problems of the conventional multichip circuit module as described above.
- each unit wiring layer has a fine and high-density wiring pattern, and a via-on-via structure is used to make interlayer connection with a shortest wiring length.
- Another object of the present invention is to provide a multilayer wiring circuit module with improved reliability and a method of manufacturing the same.
- a plurality of unit wiring layers are laminated by being connected to each other via a number of via holes, and each unit wiring layer includes a first insulating layer and a second insulating layer. And a conductive metal layer to be polished.
- the first insulating layer is formed of a photosensitive insulating resin material, and is subjected to photolithographic processing to form a plurality of via hole grooves corresponding to each via hole.
- the second insulating layer is formed of a photosensitive insulating resin material on the first insulating layer, is subjected to photolithographic processing, and partially has a communicating portion with each via hole groove to correspond to a wiring pattern. Wiring grooves are formed all around.
- the conductive metal layer is formed over the entire surface of the second insulating layer, with the conductive metal also filling the via hole grooves and the wiring grooves.
- Each unit wiring layer is polished until the main surface of the second insulating layer is exposed, and is formed on the main surface of the second insulating layer so as to have the same surface.
- Each via hole and a wiring pattern are formed by the conductive metal filled in the wiring groove.
- the first insulating layer and the second insulating layer formed of the photosensitive insulating resin material are subjected to photo-lithographic processing by simple facilities and operations, respectively, to achieve resolution.
- a via hole groove and a wiring groove having a high height it is possible to form a fine via hole and a fine and high-density wiring pattern.
- the unit wiring layers are connected to each other with a via-on-a-via structure in the shortest possible length to form an interlayer connection, thereby shortening the wiring length, reducing the attenuation of transmitted signals and reducing signal delay.
- Minimization and slimness make it possible, for example, to support large capacity, high speed, and high density buses.
- a method for manufacturing a multilayer wiring circuit module according to the present invention is directed to a multilayer wiring circuit module in which a plurality of unit wiring layers are stacked and connected to one another via a plurality of via holes.
- This is a method of manufacturing yule.
- the step of forming each unit wiring layer includes a step of forming a first insulating layer using a photosensitive insulating resin material and a step of photolithographically processing the first insulating layer. Forming a plurality of via-hole grooves corresponding to each via-hole, and forming a second insulating layer by applying a photosensitive insulating resin on the entire surface of the first insulating layer.
- Each via hole and the wiring pattern are polished to form the same surface on the main surface of the second insulating layer, and the conductive metal layer is exposed to each via hole groove and the conductive metal filled in the wiring groove. Formed.
- the first unit wiring layer is formed by forming a first insulating layer on a base substrate, and the upper unit wiring layer is formed by forming each first insulating layer into the first unit wiring layer of the lower unit wiring layer. And formed on the second insulating layer.
- the first insulating layer and the second insulating layer formed of a photosensitive insulating resin material are subjected to photolithographic processing to form a via hole groove having high resolution.
- a via hole groove having high resolution.
- the wiring groove and the fine via hole it is possible to form a fine and high-density wiring pattern.
- the unit wiring layers are connected to each other in the shortest possible way by a via-on-via structure and are laminated to form a wiring. The signal delay is minimized and the thickness can be reduced.
- FIG. 1 is a longitudinal sectional view showing a conventional circuit module.
- FIG. 2 is a longitudinal sectional view of a main part showing a circuit module according to the present invention.
- FIG. 3 is a longitudinal sectional view showing a step of forming the first insulating layer.
- FIG. 4 is a longitudinal sectional view showing a first exposure step performed on the first insulating layer.
- FIG. 5 is a longitudinal sectional view showing a first development step performed on the first insulating layer.
- FIG. 6 is a longitudinal sectional view showing a step of forming the second insulating layer.
- FIG. 7 is a vertical cross-sectional view showing a second exposure step performed on the second insulating layer.
- FIG. 8 is a vertical cross-sectional view showing a second developing step performed on the second insulating layer.
- FIG. 9 is a vertical cross-sectional view showing a step of forming a conductive metal layer applied to the second insulating layer.
- FIG. 10 is a longitudinal sectional view showing a polishing step in which a conductive metal layer is subjected to chemical mechanical polishing.
- FIG. 11 is a longitudinal sectional view showing a multilayer wiring circuit portion formed on a base substrate.
- FIG. 12 is a longitudinal sectional view showing a step of mounting a semiconductor chip on a multilayer wiring circuit portion.
- FIG. 13 is a longitudinal sectional view showing a polishing step in which a semiconductor chip and a sealing resin layer are polished.
- the circuit module according to the present invention has, for example, an information communication function and a storage function, and is mounted on various electronic devices such as a personal computer, a mobile phone, and an audio device, or is an ultra-compact that is detachably mounted as an option. Constructs the high-frequency circuit of the communication function module. Although the details of the circuit module are omitted, the superheterodyne high-frequency transmission / reception circuit that converts the transmission / reception signal to the intermediate frequency or the transmission / reception of the information signal without conversion to the intermediate frequency is performed. A high-frequency transmission / reception circuit unit and the like based on a direct conversion method are formed.
- the circuit module 1 has a first main surface 2a as shown in FIG. A multilayer wiring circuit section 2 mounted on a mother board 3 via mounting bumps 4 and a plurality of semiconductor mounting bumps 5 on a second main surface 2 b of the multilayer wiring circuit section 2. It is composed of a plurality (two in FIG. 2) of semiconductor chips (LSIs) 6 A and 6 B mounted via a sealing resin layer 7 for sealing the semiconductor chips 6 A and 6 B.
- the multilayer wiring circuit section 2 functions as an interposer on which the semiconductor chips 6A and 6B are mounted.
- appropriate electronic components and element components are also mounted on the second main surface 2b of the multilayer wiring circuit portion 2.
- the multilayer wiring circuit unit 2 is formed by laminating a second unit wiring layer 9 on the main surface of the first unit wiring layer 8 through a process to be described later.
- the third unit wiring layer 10 to the fifth unit wiring layer 12 are sequentially formed on the main surface of the lower wiring layer 9 to form a five-layer structure.
- the multilayer wiring circuit section 2 is provided through a peer hole 13 formed through all or all of the first to fifth unit wiring layers 8 to 5 or the upper and lower layers or a plurality of layers. The connection between layers is made.
- a digital circuit network that is miniaturized, miniaturized, and densified is formed in the multilayer wiring circuit section 2 through a process described later.
- the circuit module 1 according to the present invention includes the first unit wiring layer 8 to the fifth unit wiring layer 12 of the multilayer wiring circuit unit 2, the upper unit wiring layer on the via hole on the lower unit wiring layer side.
- the circuit module 1 according to the present invention includes the mother board 3 and the semiconductor chips 6 A and 6 B mounted on the second main surface 2 b of the multilayer wiring circuit section 2 with the via holes 13.
- the wiring is directly connected via a wire to reduce the wiring length. In this circuit module 1, the connection between the mother board 3 and the semiconductor chips 6A and 6B is reduced while the signal delay is reduced and the signal delay is minimized.
- the semiconductor chips 6A and 6B and the sealing resin layer 7 are polished to reduce the thickness as described later, thereby achieving the overall reduction in thickness.
- the circuit module 1 has a multilayer wiring circuit section 2, as will be described later, a first unit wiring layer 8 formed on a base substrate 20 provided with a release layer 21 on a flat main surface. Second to fifth unit wiring layers 12 to 12 are sequentially formed on the unit wiring layer 8.
- the multilayer wiring circuit section 2 is separated from the base substrate 20 via the separation layer 21 after a predetermined process.
- the base substrate 20 is reused after performing processing such as cleaning.
- a multilayer wiring circuit section 2 has a first-layer unit wiring layer 8 formed on a base substrate 20 having a flat surface as described later.
- the main surfaces of each of the unit wiring layers are flattened, and the upper unit wiring layers are formed sequentially. Therefore, in the circuit module 1, the first-layer unit wiring layers 8 to the fifth-layer unit wiring layers 12 are formed with high precision and high density of the respective wiring patterns, and the thickness is reduced.
- the length of the wiring connecting between the semiconductor chips 6A and 6B is further reduced by making the multilayer wiring circuit section 2 thinner.
- a capacitive element 14, a resistive element 15 or a spiral type inductor element 16 is formed in the multilayer wiring circuit section 2 by a thin film technique or a thick film technique.
- the capacity element 14 is, for example, a decoupling capacitor / capacitor for cutting a direct current component, and is composed of a tantalum oxide (TaO) film / tantalum nitride (TaN) film.
- the register element 15 is, for example, a resistor for a terminating resistor, and is formed of a T a N film.
- the circuit module 1 is formed such that the first unit wiring layer 8 to the fifth unit wiring layer 12 are sequentially laminated on the base substrate 20 or the flat surface of the lower unit wiring layer as described above.
- the circuit module 1 is formed by forming passive elements such as capacitor elements, register elements, or inductor elements, which have conventionally used chip components, in the multilayer wiring circuit section 2 so that extremely small and high-performance passive elements can be connected to the wiring length. Can be shortened and implemented.
- the circuit module 1 according to the present invention is manufactured through the steps described below, and the first unit wiring layer 8 to the fifth unit wiring layer 12 are respectively formed by the first insulating layer 22 and the second insulating layer. And a conductive metal layer 24.
- the manufacturing process of the first unit wiring layer 8 to the fifth unit wiring layer 12 includes forming a via hole groove 25 for forming a via hole 13 with respect to the first insulating layer 22 respectively. And a step of forming a wiring groove 27 for forming a wiring pattern 26 partially having a communication portion with the via hole groove 25 with respect to the second insulating layer 23.
- the manufacturing process of the first unit wiring layer 8 to the fifth unit wiring layer 12 forms the conductive metal layer 24 for the second insulating layer 23, respectively. It has a u-plating step and a chemical-mechanical polishing (CMP) step for polishing the conductive metal layer 24.
- CMP chemical-mechanical polishing
- the circuit module 1 is a multilayer wiring circuit in which the first unit wiring layer 8 to the fifth unit wiring layer 12 formed on the base substrate 20 through the above-described steps are laminated.
- a semiconductor chip mounting step of mounting the semiconductor chips 6A and 6B on the first main surface 2a, and sealing the semiconductor chips 6A and 6B with the sealing resin layer 7.
- a step of forming a sealing resin layer is a step of forming a sealing resin layer.
- the manufacturing process of the circuit module 1 includes a polishing process of simultaneously polishing the semiconductor chips 6A and 6B and the sealing resin layer 7, and a peeling of the multilayer wiring circuit portion 2 from the first base substrate 20.
- a circuit module 1 is manufactured with a peeling step.
- the via hole groove 25 and the wiring groove 27 are formed by subjecting the first insulating layer 22 and the second insulating layer 23 to a high resolution photolithography process.
- a conventional process including a hole forming process for a via hole and a patterning process using an opening mask and a wet etching process or a plating process on the substrate on which the copper foil layer is formed is performed.
- a circuit module 1 having a via hole 13 and a wiring pattern 26 which is highly accurate, has high density, and is miniaturized and miniaturized as compared with the manufacturing process is formed.
- the circuit module 1 is manufactured by the above-described manufacturing process, so that each peer hole 13 in the first unit wiring layer 8 to the fifth unit wiring layer 12 is minutely and precisely to about several meters. As well as being formed, each wiring pattern 26 is also formed with a very fine pitch of several xm level. Circuit module 1 is the 1st unit wiring layer By forming, for example, microstrip lines having upper and lower layers sandwiched between grounds in the eighth to fifth unit wiring layers 12, the wiring patterns 26 with controlled impedance are formed.
- the circuit module 1 manufactured by the manufacturing method according to the present invention can be reduced to about 1/10 in area size as compared with a circuit module manufactured by using the conventional manufacturing method, To 20 GHz.
- the first to fifth unit wiring layers 8 to 12 constituting the multilayer wiring circuit unit 2 are formed with a thickness of, for example, about 5 jam.
- the overall thickness of the part 2 can be suppressed to about several tens /.
- the semiconductor chips 6A and 6B are also polished to the extent of about 100 m by precision and maximum polishing, so that the thickness is significantly reduced.
- a base substrate 20 formed as shown in FIG. 3 is supplied.
- the base substrate 20 has insulating properties, heat resistance properties, or chemical resistance properties, is capable of forming a highly accurate flat surface, and has mechanical rigidity, for example, a substrate material such as an Si substrate, a glass substrate, or a quartz substrate. Formed by By using such a substrate material, the base substrate 20 suppresses a thermal change with respect to a rise in surface temperature during the later-described sputtering process, and also maintains a depth of focus and masks the photo-lithographic process. As a result, the contact alignment characteristics can be improved, and a highly accurate circuit module 1 can be manufactured.
- the base substrate 20 is not limited to the above-described substrate material, but may use another appropriate substrate material that has been subjected to a planarization process.
- the base substrate 20 used in the manufacturing method of the present invention is formed as a high-precision flat surface by subjecting the main surface 20a to a polishing treatment, and the release layer 21 is formed on the main surface 20a. Is performed.
- the release layer 21 has a uniform thickness of about 10 / xm on the main surface 20a of the base substrate 20 by, for example, a sputtering method or a chemical vapor deposition method (CVD-Chemical Vapor Deposition).
- a metal thin film layer formed of copper, aluminum, or the like formed over the entire surface, and a thickness formed over the entire surface of the metal thin film layer by, for example, spin coating.
- the multilayer wiring circuit portion 2 is peeled from the base substrate 20 with the first unit wiring layer 8 as a peeling surface in a peeling step described later.
- the first unit wiring layer 8 is formed on the release layer 21.
- a process of forming the first insulating layer 22 on the release layer 21 of the base substrate 20 is a first process.
- the first insulating layer 22 is made of, for example, a polyimide type or epoxy type negative photosensitive insulating resin, and is capable of uniform coating properties and thickness control properties, such as spin coating, force coating, roll coating.
- a film is formed over the entire surface of the release layer 21 by a method or a dip coating method.
- the first insulating layer 22 is formed with a uniform thickness by being formed on the flat base substrate 20 via the flat release layer 21.
- the manufacturing process of the first unit wiring layer 8 includes a process of performing a first photolithographic process to form a via hole groove 25 corresponding to the peer hole 13 in the first insulating layer 22 as a second process.
- the first photolithographic process includes a process of positioning and arranging the first photomask 30 on the surface of the first insulating layer 22, and a process of positioning the first photomask 30.
- the first photomask 30 has a light-shielding portion 30a where the via hole groove 25 corresponding to the via hole 13 is formed and a light-transmitting portion 30b where the other portion is formed. It is made of a sheet material on which a light-shielding / light-transmitting pattern is formed, and is positioned on and in close contact with the surface of the first insulating layer 22.
- the first exposure process employs an appropriate method such as a method of irradiating a laser beam whose operation is controlled in the X-Y direction or a method of irradiating light emitted from a mercury lamp or the like, as shown in FIG.
- the first insulating layer 22 is selectively exposed to the processing light Li transmitted from the light transmitting portion 30b of the first photomask 30.
- the first insulating layer 22 is selectively exposed by the first exposure process over the entire region in the thickness direction except for the portion where the via hole 13 is formed as shown by the broken line in FIG. Latent image.
- the base substrate 20 that has been subjected to the first exposure process is immersed in an alkaline solution, so that the unexposed portion of the first insulating layer 22 as shown in FIG. That is, a predetermined via hole groove 25 is formed by removing a portion where each via hole 13 is formed.
- the manufacturing process of the first unit wiring layer 8 includes, as shown in FIG. 6, a step of forming a second insulating layer 23 on the first insulating layer 22 in which the via hole groove 25 is formed. This is the third step.
- the second insulating layer 23 is made of, for example, a polyimide-based or epoxy-based negative photosensitive insulating resin material, and can provide uniform coating characteristics and thickness control characteristics.
- a film is formed on the first insulating layer 22 with a uniform film thickness over the entire surface by a spin coating method, a curtain coating method, a roll coating method, a dip coating method, or the like.
- the insulating resin material is also filled into the via hole grooves 25 formed in the first insulating layer 22 in the first step as shown in FIG.
- the manufacturing process of the first unit wiring layer 8 includes a step of forming a wiring groove 27 corresponding to the wiring pattern 26 in the second insulating layer 23 by performing a second photolithographic process.
- the second photolithographic process also includes a process of disposing a second photomask 31 on the surface of the second insulating layer 2 and a process of interposing the second photomask 31 through the second photomask 31.
- the second photomask 31 has, as shown in FIG.
- a portion where the wiring groove 27 corresponding to the wiring pattern 26 is formed as a light-shielding portion 31a, and other portions as light-transmitting portions 31b. It is made of a sheet material on which a light-transmitting pattern is formed, and is positioned on and in close contact with the surface of the second insulating layer 23.
- Second exposure process is also the same exposure device is used as the first exposure process described above, the processing light L 2 having passed through the second light transmitting portion 3 1 b of the photomask 3 1 second insulating layer 2
- the portion excluding the corresponding portion of the wiring pattern 26 is selectively exposed over the entire region in the thickness direction on the second insulating layer 23.
- the second development process is performed, for example, by immersing the base substrate 20 that has been subjected to the second exposure process in an alkaline solution, as shown in FIG.
- the unexposed portion of the insulating layer 23, in other words, the insulating resin material filled in each via hole groove 25 and the corresponding portion of the pattern 26 are removed, and the wiring groove 27 is formed together with the predetermined via hole groove 25.
- Form a pattern In the manufacturing process of the first-layer unit wiring layer 8, the second insulating layer 23 in which the via hole groove 25 and the wiring groove 27 are formed is subjected to metal plating to form the conductive metal layer 24.
- the step of forming a film is referred to as a fifth step.
- the metal plating may be either electrolytic plating or electroless plating, and is performed so that the conductor metal fills the inside of the wiring groove 27 together with the via hole groove 25 as shown in FIG.
- a conductive metal layer 24 having a predetermined thickness is formed on the entire surface of the second insulating layer 23.
- the metal plating is performed when the conductor metal layer 24 is subjected to copper plating in order to form a copper film layer having excellent conductivity, and the conductor metal layer 24 is formed by electrolytic plating.
- the release layer 21 is used as a voltage application electrode.
- the manufacturing process of the first unit wiring layer 8 is a sixth process of polishing the conductive metal layer 24 until the main surface of the second insulating layer 23 is exposed.
- the polishing is performed by polishing a part of the second insulating layer 23 together with the conductive metal layer 24, thereby making the main surface 8a of the first unit wiring layer 8 flat as shown in FIG. Form.
- the CMP since the second insulating layer 23 and the conductive metal layer 24 made of different materials are simultaneously polished, the CMP has polishing selectivity such that the polishing rate of the conductive metal layer 24 is increased. It is done by law.
- the above-described polishing treatment is performed to form a conductive metal, that is, a copper layer filled in the via-hole grooves 25 and the wiring grooves 27 as shown in FIG. Are formed on the same surface as the second insulating layer 23 and are exposed, and the first unit wiring layer 8 in which the via holes 13 and the wiring patterns 26 are respectively formed is manufactured.
- the first layer unit wiring layer 8 is formed by forming the first insulating layer 22 and the second insulating layer 23 on the base substrate 20 with a high precision thickness, and forming the high-resolution first layer.
- a via hole 13 and a wiring pattern 26 are formed by the via hole groove 25 and the wiring groove 27 formed by performing the photolithographic processing and the second photolithographic processing.
- the first unit wiring layer 8 is configured to be thin as a whole, but since the wiring pattern 26 has a thickness equivalent to the thickness of the second insulating layer 23, sufficient signal transmission characteristics are obtained. Will be retained.
- the first unit wiring layer 8 has a structure in which the via hole groove 25 and the wiring groove 27 have a high density and are miniaturized and miniaturized to form the first insulating layer 22 and the second insulating layer 2. By forming the via holes 3, via holes 13 and wiring patterns 26, which are dense and miniaturized, are formed.
- the first unit wiring layer 8 is formed with connection pads ⁇ input / output electrodes for mounting on the mother board 3 together with the wiring pattern 26.
- the first insulating layer 22 and the second insulating layer 23 were formed as a negative photosensitive insulating resin material.
- a film may be formed from a photosensitive insulating resin material.
- the first photomask 30 and the second photomask 31 are such that the portions corresponding to the via hole grooves 25 and the wiring grooves 27 are light-transmitting portions, and the other portions are light-shielding portions. It is said. Further, in such a manufacturing process, since the first insulating layer 22 is exposed during the second exposure processing, it is necessary to control the exposure amount.
- the manufacturing process of the second-layer unit wiring layer 9 is performed on the flattened main surface 8a of the first-layer unit wiring layer 8 described above.
- the manufacturing process of the second-layer unit wiring layer 9 includes forming the first insulating layer 22 on the main surface 8 a of the first-layer unit wiring layer 8 and then forming the via hole groove 25 described above. 1) a step of performing photolithographic processing, a step of forming a second insulating layer 23, a step of performing second photo-lithographic processing for forming a wiring groove 27, and a step of forming a conductive metal layer 24. And a polishing process.
- passive elements such as the capacitor element 14, the resistive element 15 and the inductor element 16 are also formed by an appropriate method, although details are omitted.
- the manufacturing process of the third unit wiring layer is performed on the second unit wiring layer 9, and the forming process of the upper unit wiring layer is sequentially performed.
- a multilayer wiring circuit section 2 is manufactured on a base substrate 20.
- the via holes 13 formed in the first unit wiring layer 8 to the fifth unit wiring layer 12 are arranged such that an upper via hole is formed on a lower via hole as shown in FIG. It is directly formed to form a via-on-one via hole structure. Therefore, in the multilayer wiring circuit section 2, the first to fifth unit wiring layers 8 to 12 are connected with the shortest wiring length.
- the multilayer wiring circuit section 2 is configured such that the upper unit wiring layer is sequentially formed on the planarized lower unit wiring layer, so that the lower wiring The effect due to the accumulation of the line pattern thickness is suppressed, and the uppermost fifth unit wiring layer 12 is formed without warpage, undulation, or unevenness. Therefore, in the multilayer wiring circuit section 2, a higher precision unit wiring layer is formed on the fifth unit wiring layer 12 to enable high integration.
- the semiconductor chip 6A is formed on the main surface of the fifth unit wiring layer 12 constituting the second main surface 2b of the multilayer wiring circuit section 2. 6 B is mounted.
- the fifth unit wiring layer 12 has electrode pads and other electrodes for mounting the semiconductor chips 6A and 6B by an appropriate mounting method such as a flip chip mounting method in the same manner as the wiring pattern 26.
- a connection terminal portion for connection with an electronic component or another module is formed.
- the electrode pad / connection terminal portion is formed by, for example, electroless nickel / copper plating to form a terminal.
- the process of attaching the mounting bumps 5 to the electrodes of the semiconductor chips 6A and 6B and positioning the semiconductor chips 6A and 6B on the fifth unit wiring layer 12 And a step of performing, for example, a reflow soldering process.
- a sealing step of sealing the mounted semiconductor chips 6A and 6B with the sealing resin layer 7 is performed as shown in FIG.
- the sealing resin layer 7 is formed by a transfer molding method or a printing method using a resin material having a small thermosetting shrinkage such as an epoxy resin, and after being cured, the base substrate 20 and the multilayer wiring circuit section 2 are formed. The generation of stress that causes warpage or the like is suppressed.
- a process of polishing the semiconductor chips 6A and 6B and the sealing resin layer 7 to a predetermined thickness is performed.
- the polishing step is performed by, for example, a mechanical polishing method using a grinder, a chemical polishing method by jet etching, or a CMP using a combination of the mechanical polishing method and the chemical polishing method, and the semiconductor chip 6 A, together with the sealing resin layer 7.
- the surface of 6B is polished to the maximum extent that does not interfere with its function, and its thickness is reduced as shown in Fig.13.
- the semiconductor chips 6A and 6B are polished in a state where the semiconductor chips 6A and 6B are sealed with the sealing resin layer 7 using the base substrate 20 as a supporting substrate, so that the edges of the semiconductor chips 6A and 6B are chipped. Polish as much as possible without causing any damage.
- the circuit module 1 is peeled from the base substrate 20 after the second base substrate having the release layer is bonded to the polished sealing resin layer 7. Is performed.
- the second base substrate has electrode pads formed on the first unit wiring layer 8 constituting the first main surface 2a of the multilayer wiring circuit unit 2 in order to mount the circuit module 1 on the mother substrate 3 or the like. Or a base for flattening.
- the base substrate 20 on which the circuit module 1 has been formed through the above-described steps is immersed in an acidic solution such as hydrochloric acid, for example.
- an acidic solution such as hydrochloric acid
- the peeling progresses at the interface between the metal thin film layer of the peeling layer 21 and the resin thin film layer in the acid solution, and the base substrate 2 remains in a state where the resin thin film layer remains on the first unit wiring layer 8 side. Peeled from 0.
- the circuit module 1 may be peeled from the base substrate 20 by, for example, performing a laser ablation process.
- the resin thin film layer remaining on the first unit wiring layer 8 side is removed by, for example, a dry etching method using oxygen plasma.
- the multi-layer wiring circuit section 2 includes a connection pad formed on the first layer wiring layer 8 exposed on the first main surface 2a and an Au—Ni layer formed by electroless plating on the surface of the input / output terminal. An electrode forming process to be formed is performed.
- the circuit module 1 is mounted on the connection pad with the mounting bump 4 attached thereto and subjected to reflow soldering while being positioned on the mother board 3.
- the circuit module 1 is subjected to a second base substrate peeling process prior to the mother substrate 3 mounting process.
- the process of manufacturing one circuit module 1 on the base substrate 20 has been described, but a large number of circuit modules 1 are formed using a relatively large base substrate 20. You may make it collectively.
- a force-setting process is performed on the connecting portion that separates the circuit modules 1.
- the circuit module 1 was manufactured on a base substrate 20 made of a Si substrate or a glass substrate. Various organic substrates to be used may be used.
- the circuit module 1 is configured such that the multilayer wiring circuit section 2 also has a function as an in-line poser for mounting the semiconductor chips 6A and 6B, but is used as a single multilayer wiring circuit module.
- the circuit module 1 may of course be configured such that the semiconductor chip mounted components are also mounted on the first main surface 2a side of the multilayer wiring circuit portion 2. In this case, the circuit module 1 is also subjected to a flattening process on the first main surface 2a side using the second base substrate as a base.
- each unit wiring layer forms a via hole groove by performing photolithographic processing on a first insulating layer formed of a photosensitive insulating resin material.
- the second insulating layer formed of a photosensitive insulating resin material on the first insulating layer is subjected to photolithographic processing to form a wiring groove, and the via hole groove and the wiring groove are filled with a conductive metal.
- each unit wiring layer is connected between layers in the shortest via a via-on-via structure, so that transmission signal attenuation due to shortening of wiring length is reduced and transmission delay is minimized.
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Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/488,499 US7473992B2 (en) | 2002-07-03 | 2003-06-19 | Multi-layer interconnection circuit module and manufacturing method thereof |
EP03733511A EP1519414A4 (en) | 2002-07-03 | 2003-06-19 | MULTILAYER WIRING CIRCUIT MODULE AND METHOD FOR THE PRODUCTION THEREOF |
KR1020047003102A KR101053419B1 (ko) | 2002-07-03 | 2003-06-19 | 다층 배선 회로 모듈 및 그 제조 방법 |
US11/166,970 US7235477B2 (en) | 2002-07-03 | 2005-06-24 | Multi-layer interconnection circuit module and manufacturing method thereof |
US11/332,931 US20060125083A1 (en) | 2002-07-03 | 2006-01-17 | Multi-layer interconnection circuit module and manufacturing method thereof |
US11/711,544 US20070145568A1 (en) | 2002-07-03 | 2007-02-27 | Multi-layer interconnection circuit module and manufacturing method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002-195018 | 2002-07-03 | ||
JP2002195018A JP2004039867A (ja) | 2002-07-03 | 2002-07-03 | 多層配線回路モジュール及びその製造方法 |
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US10488499 A-371-Of-International | 2003-06-19 | ||
US11/166,970 Division US7235477B2 (en) | 2002-07-03 | 2005-06-24 | Multi-layer interconnection circuit module and manufacturing method thereof |
US11/332,931 Continuation US20060125083A1 (en) | 2002-07-03 | 2006-01-17 | Multi-layer interconnection circuit module and manufacturing method thereof |
Publications (1)
Publication Number | Publication Date |
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WO2004006331A1 true WO2004006331A1 (ja) | 2004-01-15 |
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Family Applications (1)
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PCT/JP2003/007826 WO2004006331A1 (ja) | 2002-07-03 | 2003-06-19 | 多層配線回路モジュール及びその製造方法 |
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US (4) | US7473992B2 (ja) |
EP (1) | EP1519414A4 (ja) |
JP (1) | JP2004039867A (ja) |
KR (1) | KR101053419B1 (ja) |
TW (1) | TWI232574B (ja) |
WO (1) | WO2004006331A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US7827681B2 (en) * | 2007-06-15 | 2010-11-09 | Shinko Electric Industries Co., Ltd. | Method of manufacturing electronic component integrated substrate |
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Also Published As
Publication number | Publication date |
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TWI232574B (en) | 2005-05-11 |
US20050006752A1 (en) | 2005-01-13 |
US20060125083A1 (en) | 2006-06-15 |
EP1519414A4 (en) | 2009-03-04 |
US20070145568A1 (en) | 2007-06-28 |
EP1519414A1 (en) | 2005-03-30 |
US7235477B2 (en) | 2007-06-26 |
TW200409337A (en) | 2004-06-01 |
US20050250310A1 (en) | 2005-11-10 |
KR101053419B1 (ko) | 2011-08-01 |
JP2004039867A (ja) | 2004-02-05 |
US7473992B2 (en) | 2009-01-06 |
KR20050020739A (ko) | 2005-03-04 |
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