US20110061911A1 - Interposer and method for manufacturing the same - Google Patents
Interposer and method for manufacturing the same Download PDFInfo
- Publication number
- US20110061911A1 US20110061911A1 US12/654,372 US65437209A US2011061911A1 US 20110061911 A1 US20110061911 A1 US 20110061911A1 US 65437209 A US65437209 A US 65437209A US 2011061911 A1 US2011061911 A1 US 2011061911A1
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- Prior art keywords
- redistribution layer
- insulation plate
- layer
- upper redistribution
- forming
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- 238000000034 method Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000009413 insulation Methods 0.000 claims abstract description 46
- 238000001465 metallisation Methods 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052802 copper Inorganic materials 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000007747 plating Methods 0.000 claims description 7
- 239000011295 pitch Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
-
- 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
- H01L21/48—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
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/486—Via connections through the substrate with or without pins
-
- 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
- H01L21/48—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
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4857—Multilayer substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/32—Holders for supporting the complete device in operation, i.e. detachable fixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- 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
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49822—Multilayer substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- 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
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49827—Via connections through the substrates, e.g. pins going through the substrate, coaxial cables
-
- 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
- H05K3/4602—Manufacturing multilayer circuits characterized by a special circuit board as base or central core whereon additional circuit layers are built or additional circuit boards are laminated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2225/00—Details relating to assemblies covered by the group H01L25/00 but not provided for in its subgroups
- H01L2225/03—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00
- H01L2225/04—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers
- H01L2225/065—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers the devices being of a type provided for in group H01L27/00
- H01L2225/06503—Stacked arrangements of devices
- H01L2225/06572—Auxiliary carrier between devices, the carrier having an electrical connection structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/0979—Redundant conductors or connections, i.e. more than one current path between two points
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10378—Interposers
-
- 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
- H05K3/24—Reinforcing the conductive pattern
- H05K3/244—Finish plating of conductors, especially of copper conductors, e.g. for pads or lands
-
- 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
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/42—Plated through-holes or plated via connections
- H05K3/425—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern
- H05K3/427—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern initial plating of through-holes in metal-clad substrates
-
- 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
- H05K3/4602—Manufacturing multilayer circuits characterized by a special circuit board as base or central core whereon additional circuit layers are built or additional circuit boards are laminated
- H05K3/4605—Manufacturing multilayer circuits characterized by a special circuit board as base or central core whereon additional circuit layers are built or additional circuit boards are laminated made from inorganic insulating material
-
- 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
Definitions
- the present invention relates to an interposer, and more particularly, to an interposer which can be manufactured at low costs by reducing material costs and manufacturing costs.
- a typical interposer is manufactured using silicon through a semiconductor manufacturing process. However, when the interposer is manufactured using silicon, material costs and manufacturing costs increase.
- An aspect of the present invention provides an interposer which can be manufactured at low costs by reducing material costs and manufacturing cost.
- an interposer including: an insulation plate where a via is formed, the insulation plate including a resin or a ceramic; a first upper redistribution layer formed on the top surface of the insulation plate to be electrically connected to the via along a designed circuit pattern; a first upper protection layer laminated to expose a portion of the first upper redistribution layer and protecting the first upper redistribution layer; a second upper redistribution layer electrically connected to the first upper redistribution layer and laminated along a designed circuit pattern; a second upper protection layer laminated to expose a portion of the second upper redistribution layer and protecting the second upper redistribution layer; and an under bump metallization (UBM) formed at the exposed portion of the second upper redistribution layer.
- UBM under bump metallization
- the interposer may further include: a lower redistribution layer formed on the bottom surface of the insulation plate to be electrically connected to the via along a designed circuit pattern; a lower protection layer laminated to expose a portion of the lower redistribution layer and protecting the lower redistribution layer; and an under bump metallization (UBM) formed at the exposed portion of the lower redistribution layer.
- UBM under bump metallization
- a method for manufacturing an interposer including: forming a via hole in an insulation plate including a resin or a ceramic; simultaneously forming a resists for a first upper redistribution layer on the top surface of the insulation plate, and a resistor for a lower redistribution layer on the bottom surface of the insulation plate; plating copper to fill the via hole and simultaneously forming the first upper redistribution layer and the lower redistribution layer along a designed circuit pattern; and forming a first upper protection layer and a lower protection layer to expose a portion of the first upper redistribution layer and a portion of the lower redistribution layer.
- the method may further include forming an under bump metallization (UBM) on the first upper redistribution layer and the lower redistribution layer exposed after the formation of the first upper protection layer and the lower protection layer.
- UBM under bump metallization
- the method may further include: forming a second upper redistribution layer on the top surface of the insulation plate along a designed circuit pattern; and forming a second upper protection layer to expose a portion of the second upper redistribution layer.
- the method may further include forming an under bump metallization (UBM) on the second upper redistribution layer exposed after the formation of the second upper protection layer.
- UBM under bump metallization
- the second upper redistribution layer and the second upper protection layer may be formed using a semiconductor manufacturing process in order for implementation of fine pitches.
- the forming of the via hole on the insulation plate may include forming a seed layer in a region where the resin or ceramic inside the insulation plate is exposed.
- the plating of the copper and the forming of the first upper redistribution layer and the lower redistribution layer may include plating the copper on both sides of the insulation plate and the via hole, and removing the resists.
- the insulation plate may be a copper clad laminate (CCL).
- FIG. 1 is a cross-sectional view of an interposer according to an embodiment of the present invention.
- FIGS. 2A to 2L illustrate a method for manufacturing an interposer according to another embodiment of the present invention.
- FIG. 1 is a cross-sectional view of an interposer according to an embodiment of the present invention.
- the interposer may include an insulation plate 10 and a via 12 .
- the insulation plate 10 may include a resin or a ceramic, and the via 12 passes through the insulation plate 10 in a thickness direction.
- the insulation plate 10 may be a copper clad laminate (CCL) in which copper layers are laminated on the top and bottom surfaces thereof.
- the via 20 may be formed of a conductive material, e.g., copper.
- a first upper redistribution layer (RDL) 31 may be formed on the top surface of the insulation plate 10 along a designed circuit pattern, and a first upper protection layer 41 protecting the first upper redistribution layer 31 may be formed on the top surface of the first upper redistribution layer 31 to expose a portion of the first upper redistribution layer 31 .
- the first upper redistribution layer 31 may be formed of a conductive material.
- a second upper redistribution layer 32 may be formed along a circuit pattern designed to expose a portion of the first upper protection layer 41 , and a second upper protection layer 42 may be formed on the top surface of the second upper redistribution layer 32 to expose a portion of the second upper redistribution layer 32 .
- the second upper redistribution layer 32 may be formed of a conductive material.
- an under bump metallization (UMB) for the formation of bumps may be formed at the exposed portion of the second upper redistribution layer 32 .
- a lower redistribution layer 33 may be formed on the bottom surface of the insulation plate 10 along a designed circuit pattern, and a lower protection layer 43 protecting the lower redistribution layer 33 may be formed on the bottom surface of the lower redistribution layer 33 to expose a portion of the lower redistribution layer 33 .
- the lower redistribution layer 33 may be formed of a conductive material.
- An under bump metallization for the formation of bumps may be formed at the exposed portion of the lower redistribution layer 33 .
- FIGS. 2A to 2L illustrate a method for manufacturing an interposer according to another embodiment of the present invention.
- FIG. 2A is a schematic cross-sectional view of a copper clad laminate 11 where copper foil layers 11 are formed on both surfaces of an insulation plate 10 including a resin or a ceramic.
- a via hole 12 may be formed in the insulation plate 10 in a thickness direction.
- the via hole 12 may be formed through a mechanical method, such as laser cutting or drilling.
- the silicon wafer In the case of using the silicon wafer, much expense may be incurred because a via hole is formed by an etching process. However, in the case of using the insulation plate 10 , the cost reduction effect is achieved because the via hole 12 may be formed through a mechanical method.
- seed layers for the formation of a via may be formed on both sides of the via holes 12 .
- the seed layer may be formed of copper.
- resists 14 for the formation of redistribution layers may be formed on both surfaces of the insulation plate 10 where the via hole 12 is formed.
- a conductive metal is plated on the insulation plate 10 where the resists 14 are formed on both surfaces thereof, and the resists 14 are removed to form a first upper redistribution layer 31 , a lower redistribution layer 33 , and a via 20 at the same time.
- the conductive metal used in the plating may be copper.
- the via and the redistribution layers cannot be formed at the same time, and individual processes must be performed. Hence, much time and expense are incurred.
- the via 20 , the first upper redistribution layer 31 , and the lower redistribution layer 33 can be formed at the same time, but it is difficult to implement fine pitches. However, there is no great problem because the first upper redistribution layer 31 and the lower redistribution layer 33 are generally used as the ground interconnection.
- the large-sized insulation plate 10 is processed in a wafer form. Therefore, since a semiconductor manufacturing process can be applied, fine pitches for subsequent redistribution layers may be implemented.
- a lower protection layer 43 protecting the lower redistribution layer 33 may be formed on the bottom surface of the insulation plate 10 . As illustrated in FIG. 2G , the lower protection layer 43 may be formed to expose a portion of the lower redistribution layer 33 . Furthermore, the lower protection layer 43 may be formed of an insulating material.
- an under bump metallization 52 for the formation of bumps may be formed on the exposed lower redistribution layer 33 . Furthermore, although not illustrated, necessary bumps may be formed on the under bump metallization 52 .
- a first upper protection layer 41 protecting the first upper redistribution layer 31 may be formed on the top of the insulation plate 10 . As illustrated in FIG. 2I , the first upper protection layer 41 may also be formed to expose a portion of the first upper redistribution layer 31 . Furthermore, the first upper protection layer 41 may be formed of an insulating material.
- a second upper redistribution layer 32 may be on the top surface of the first upper protection layer 41 along a designed circuit pattern.
- the second upper redistribution layer 32 may be formed of a conductive material. As illustrated in FIG. 2J , the second upper redistribution layer 32 may be formed to expose a portion of the first upper protection layer 41 .
- a second upper protection layer 42 protecting the second upper redistribution layer 32 may be formed on the top surface of the second upper redistribution layer 32 . As illustrated in FIG. 2K , the second upper protection layer 42 may be formed to expose a portion of the second upper redistribution layer 32 . Furthermore, the second upper protection layer 42 may be formed of an insulating material.
- an under bump metallization 51 for formation of bumps may be formed at the exposed portion of the second upper redistribution layer 32 .
- necessary bumps may be formed on the under bump metallization 51 .
- a two-layered redistribution layer and a protection layer are formed on the top surface of the insulation plate 10 and a single-layered redistribution layer and a protection layer are formed on the bottom surface of the insulation plate 10
- a plurality of redistribution layers and a plurality of protection layers may be further laminated onto the top and bottom surfaces of the insulation plate 10 .
- the interposer may be provided at low cost by reducing material costs and manufacturing costs because the interposer is manufactured using an insulation plate including a resin or a ceramic, instead of a silicon wafer.
- the large-sized insulation plate may be used, a large quantity of interposers can be produced in a single process, thereby improving the productivity of the interposers.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
An interposer includes: an insulation plate where a via is formed, the insulation plate including a resin or a ceramic; a first upper redistribution layer electrically connected to the via along a circuit pattern designed on the top surface of the insulation plate; a first upper protection layer laminated to expose a portion of the first upper redistribution layer and protecting the first upper redistribution layer; a second upper redistribution layer electrically connected to the first upper redistribution layer and laminated along a designed circuit pattern designed; a second upper protection layer laminated to expose a portion of the second upper redistribution layer and protecting the second upper redistribution layer; and an under bump metallization (UBM) formed at the exposed portion of the second upper redistribution layer.
Description
- This application claims the priority of Korean Patent Application No. 10-2009-0086614 filed on Sep. 14, 2009, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to an interposer, and more particularly, to an interposer which can be manufactured at low costs by reducing material costs and manufacturing costs.
- 2. Description of the Related Art
- The trend within the electronics industry is to manufacture lighter, smaller, faster, multi-functional, high-performance and high-reliability products at low cost. One of most important technologies within the industry is a package technology. In order to implement smaller and slimmer packages, interposer technology for realizing 3D structures and ensuring reliability is required.
- A typical interposer is manufactured using silicon through a semiconductor manufacturing process. However, when the interposer is manufactured using silicon, material costs and manufacturing costs increase.
- An aspect of the present invention provides an interposer which can be manufactured at low costs by reducing material costs and manufacturing cost.
- According to an aspect of the present invention, there is provided an interposer including: an insulation plate where a via is formed, the insulation plate including a resin or a ceramic; a first upper redistribution layer formed on the top surface of the insulation plate to be electrically connected to the via along a designed circuit pattern; a first upper protection layer laminated to expose a portion of the first upper redistribution layer and protecting the first upper redistribution layer; a second upper redistribution layer electrically connected to the first upper redistribution layer and laminated along a designed circuit pattern; a second upper protection layer laminated to expose a portion of the second upper redistribution layer and protecting the second upper redistribution layer; and an under bump metallization (UBM) formed at the exposed portion of the second upper redistribution layer.
- The interposer may further include: a lower redistribution layer formed on the bottom surface of the insulation plate to be electrically connected to the via along a designed circuit pattern; a lower protection layer laminated to expose a portion of the lower redistribution layer and protecting the lower redistribution layer; and an under bump metallization (UBM) formed at the exposed portion of the lower redistribution layer.
- According to another aspect of the present invention, there is provided a method for manufacturing an interposer, the method including: forming a via hole in an insulation plate including a resin or a ceramic; simultaneously forming a resists for a first upper redistribution layer on the top surface of the insulation plate, and a resistor for a lower redistribution layer on the bottom surface of the insulation plate; plating copper to fill the via hole and simultaneously forming the first upper redistribution layer and the lower redistribution layer along a designed circuit pattern; and forming a first upper protection layer and a lower protection layer to expose a portion of the first upper redistribution layer and a portion of the lower redistribution layer.
- The method may further include forming an under bump metallization (UBM) on the first upper redistribution layer and the lower redistribution layer exposed after the formation of the first upper protection layer and the lower protection layer.
- The method may further include: forming a second upper redistribution layer on the top surface of the insulation plate along a designed circuit pattern; and forming a second upper protection layer to expose a portion of the second upper redistribution layer.
- The method may further include forming an under bump metallization (UBM) on the second upper redistribution layer exposed after the formation of the second upper protection layer.
- The second upper redistribution layer and the second upper protection layer may be formed using a semiconductor manufacturing process in order for implementation of fine pitches.
- The forming of the via hole on the insulation plate may include forming a seed layer in a region where the resin or ceramic inside the insulation plate is exposed.
- The plating of the copper and the forming of the first upper redistribution layer and the lower redistribution layer may include plating the copper on both sides of the insulation plate and the via hole, and removing the resists.
- The insulation plate may be a copper clad laminate (CCL).
- The above and other aspects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a cross-sectional view of an interposer according to an embodiment of the present invention; and -
FIGS. 2A to 2L illustrate a method for manufacturing an interposer according to another embodiment of the present invention. - Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the thicknesses of layers and regions are exaggerated for clarity. Like reference numerals in the drawings denote like elements, and thus their description will be omitted.
- Further, when a part (or element, device, etc.) is referred to as being “connected” to another part (or element, device, etc.), it should be understood that the former can be “directly connected” to the latter, or “indirectly connected” to the latter via an intervening part (or element, device, etc.). Furthermore, when it is described that one comprises (or includes or has) certain elements, it should be understood that it may comprise (or include or has) only those elements, or it may comprise (or include or have) other elements as well as those elements if there is no specific limitation.
-
FIG. 1 is a cross-sectional view of an interposer according to an embodiment of the present invention. - Referring to
FIG. 1 , the interposer according to the embodiment of the present invention may include aninsulation plate 10 and avia 12. Theinsulation plate 10 may include a resin or a ceramic, and thevia 12 passes through theinsulation plate 10 in a thickness direction. Theinsulation plate 10 may be a copper clad laminate (CCL) in which copper layers are laminated on the top and bottom surfaces thereof. Thevia 20 may be formed of a conductive material, e.g., copper. - A first upper redistribution layer (RDL) 31 may be formed on the top surface of the
insulation plate 10 along a designed circuit pattern, and a firstupper protection layer 41 protecting the firstupper redistribution layer 31 may be formed on the top surface of the firstupper redistribution layer 31 to expose a portion of the firstupper redistribution layer 31. The firstupper redistribution layer 31 may be formed of a conductive material. - In addition, a second
upper redistribution layer 32 may be formed along a circuit pattern designed to expose a portion of the firstupper protection layer 41, and a secondupper protection layer 42 may be formed on the top surface of the secondupper redistribution layer 32 to expose a portion of the secondupper redistribution layer 32. The secondupper redistribution layer 32 may be formed of a conductive material. - If necessary, an under bump metallization (UMB) for the formation of bumps may be formed at the exposed portion of the second
upper redistribution layer 32. - A
lower redistribution layer 33 may be formed on the bottom surface of theinsulation plate 10 along a designed circuit pattern, and alower protection layer 43 protecting thelower redistribution layer 33 may be formed on the bottom surface of thelower redistribution layer 33 to expose a portion of thelower redistribution layer 33. Thelower redistribution layer 33 may be formed of a conductive material. - An under bump metallization for the formation of bumps may be formed at the exposed portion of the
lower redistribution layer 33. -
FIGS. 2A to 2L illustrate a method for manufacturing an interposer according to another embodiment of the present invention. -
FIG. 2A is a schematic cross-sectional view of acopper clad laminate 11 wherecopper foil layers 11 are formed on both surfaces of aninsulation plate 10 including a resin or a ceramic. - In the case of using a silicon wafer, much expense may be incurred in making the silicon wafer having a desired thickness. However, in the case of using a copper clad laminate, the cost reduction effect is achieved. In addition, since a large-sized copper clad laminate, e.g., 405×510, may be used, productivity is also improved.
- Referring to
FIG. 2B , avia hole 12 may be formed in theinsulation plate 10 in a thickness direction. Thevia hole 12 may be formed through a mechanical method, such as laser cutting or drilling. - In the case of using the silicon wafer, much expense may be incurred because a via hole is formed by an etching process. However, in the case of using the
insulation plate 10, the cost reduction effect is achieved because thevia hole 12 may be formed through a mechanical method. - Referring to
FIG. 2C , seed layers for the formation of a via may be formed on both sides of thevia holes 12. The seed layer may be formed of copper. - Referring to
FIG. 2D , resists 14 for the formation of redistribution layers may be formed on both surfaces of theinsulation plate 10 where the viahole 12 is formed. - Referring to
FIGS. 2E and 2F , a conductive metal is plated on theinsulation plate 10 where the resists 14 are formed on both surfaces thereof, and the resists 14 are removed to form a firstupper redistribution layer 31, alower redistribution layer 33, and a via 20 at the same time. The conductive metal used in the plating may be copper. - In the case of using the silicon wafer, the via and the redistribution layers cannot be formed at the same time, and individual processes must be performed. Hence, much time and expense are incurred. In the case of using the copper clad laminate, the via 20, the first
upper redistribution layer 31, and thelower redistribution layer 33 can be formed at the same time, but it is difficult to implement fine pitches. However, there is no great problem because the firstupper redistribution layer 31 and thelower redistribution layer 33 are generally used as the ground interconnection. - When the process of removing the resists illustrated in
FIG. 2F is completed, the large-sized insulation plate 10 is processed in a wafer form. Therefore, since a semiconductor manufacturing process can be applied, fine pitches for subsequent redistribution layers may be implemented. - Referring to
FIG. 2G , alower protection layer 43 protecting thelower redistribution layer 33 may be formed on the bottom surface of theinsulation plate 10. As illustrated inFIG. 2G , thelower protection layer 43 may be formed to expose a portion of thelower redistribution layer 33. Furthermore, thelower protection layer 43 may be formed of an insulating material. - Referring to
FIG. 2H , an underbump metallization 52 for the formation of bumps may be formed on the exposedlower redistribution layer 33. Furthermore, although not illustrated, necessary bumps may be formed on theunder bump metallization 52. - Referring to
FIG. 2I , a firstupper protection layer 41 protecting the firstupper redistribution layer 31 may be formed on the top of theinsulation plate 10. As illustrated inFIG. 2I , the firstupper protection layer 41 may also be formed to expose a portion of the firstupper redistribution layer 31. Furthermore, the firstupper protection layer 41 may be formed of an insulating material. - Referring to
FIG. 2J , a secondupper redistribution layer 32 may be on the top surface of the firstupper protection layer 41 along a designed circuit pattern. The secondupper redistribution layer 32 may be formed of a conductive material. As illustrated inFIG. 2J , the secondupper redistribution layer 32 may be formed to expose a portion of the firstupper protection layer 41. - Referring to
FIG. 2K , a secondupper protection layer 42 protecting the secondupper redistribution layer 32 may be formed on the top surface of the secondupper redistribution layer 32. As illustrated inFIG. 2K , the secondupper protection layer 42 may be formed to expose a portion of the secondupper redistribution layer 32. Furthermore, the secondupper protection layer 42 may be formed of an insulating material. - Referring to
FIG. 2L , an underbump metallization 51 for formation of bumps may be formed at the exposed portion of the secondupper redistribution layer 32. Although not illustrated inFIG. 2L , necessary bumps may be formed on theunder bump metallization 51. - Moreover, although a two-layered redistribution layer and a protection layer are formed on the top surface of the
insulation plate 10 and a single-layered redistribution layer and a protection layer are formed on the bottom surface of theinsulation plate 10, a plurality of redistribution layers and a plurality of protection layers may be further laminated onto the top and bottom surfaces of theinsulation plate 10. - As set forth above, according to exemplary embodiments of the invention, the interposer may be provided at low cost by reducing material costs and manufacturing costs because the interposer is manufactured using an insulation plate including a resin or a ceramic, instead of a silicon wafer.
- Moreover, since the large-sized insulation plate may be used, a large quantity of interposers can be produced in a single process, thereby improving the productivity of the interposers.
- While the present invention has been shown and described in connection with the exemplary embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An interposer comprising:
an insulation plate where a via is formed, the insulation plate including a resin or a ceramic;
a first upper redistribution layer formed on the top surface of the insulation plate to be electrically connected to the via along a designed circuit pattern;
a first upper protection layer laminated to expose a portion of the first upper redistribution layer and protecting the first upper redistribution layer;
a second upper redistribution layer electrically connected to the first upper redistribution layer and laminated along a designed circuit pattern;
a second upper protection layer laminated to expose a portion of the second upper redistribution layer and protecting the second upper redistribution layer; and
an under bump metallization (UBM) formed at the exposed portion of the second upper redistribution layer.
2. The interposer of claim 1 , further comprising:
a lower redistribution layer formed on the bottom surface of the insulation plate to be electrically connected to the via along a designed circuit pattern;
a lower protection layer laminated to expose a portion of the lower redistribution layer and protecting the lower redistribution layer; and
an under bump metallization (UBM) formed at the exposed portion of the lower redistribution layer.
3. A method for manufacturing an interposer, the method comprising:
forming a via hole in an insulation plate including a resin or a ceramic;
simultaneously forming resists for a first upper redistribution layer on the top surface of the insulation plate, and a resistor for a lower redistribution layer on the bottom surface of the insulation plate;
plating copper to fill the via hole and simultaneously forming the first upper redistribution layer and the lower redistribution layer along a designed circuit pattern; and
forming a first upper protection layer and a lower protection layer to expose a portion of the first upper redistribution layer and a portion of the lower redistribution layer.
4. The method of claim 3 , further comprising forming an under bump metallization (UBM) on the first upper redistribution layer and the lower redistribution layer exposed after the formation of the first upper protection layer and the lower protection layer.
5. The method of claim 3 , further comprising:
forming a second upper redistribution layer on the top surface of the insulation plate along a designed circuit pattern; and
forming a second upper protection layer to expose a portion of the second upper redistribution layer.
6. The method of claim 5 , further comprising forming an under bump metallization (UBM) on the second upper redistribution layer exposed after the formation of the second upper protection layer.
7. The method of claim 5 , wherein the second upper redistribution layer and the second upper protection layer are formed using a semiconductor manufacturing process in order for implementation of fine pitches.
8. The method of claim 3 , wherein the forming of the via hole on the insulation plate comprises forming a seed layer in a region where the resin or ceramic inside the insulation plate is exposed.
9. The method of claim 3 , wherein the plating of the copper and the forming of the first upper redistribution layer and the lower redistribution layer comprise plating the copper on both sides of the insulation plate and the via hole, and removing the resists.
10. The method of claim 3 , wherein the insulation plate is a copper clad laminate (CCL).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/632,614 US9196506B2 (en) | 2009-09-14 | 2012-10-01 | Method for manufacturing interposer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020090086614A KR101060862B1 (en) | 2009-09-14 | 2009-09-14 | Interposer and manufacturing method thereof |
KR10-2009-0086614 | 2009-09-14 |
Related Child Applications (1)
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US13/632,614 Division US9196506B2 (en) | 2009-09-14 | 2012-10-01 | Method for manufacturing interposer |
Publications (1)
Publication Number | Publication Date |
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US20110061911A1 true US20110061911A1 (en) | 2011-03-17 |
Family
ID=43729371
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US12/654,372 Abandoned US20110061911A1 (en) | 2009-09-14 | 2009-12-17 | Interposer and method for manufacturing the same |
US13/632,614 Expired - Fee Related US9196506B2 (en) | 2009-09-14 | 2012-10-01 | Method for manufacturing interposer |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US13/632,614 Expired - Fee Related US9196506B2 (en) | 2009-09-14 | 2012-10-01 | Method for manufacturing interposer |
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US (2) | US20110061911A1 (en) |
KR (1) | KR101060862B1 (en) |
Cited By (4)
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US20140182905A1 (en) * | 2012-12-31 | 2014-07-03 | Samsung Electro-Mechanics Co., Ltd. | Printed circuit board and surface treatment method of printed circuit board |
US20150130077A1 (en) * | 2010-09-17 | 2015-05-14 | Tessera, Inc. | Staged via formation from both sides of chip |
US10483194B2 (en) * | 2014-12-03 | 2019-11-19 | Phoenix Pioneer Technology Co., Ltd. | Interposer substrate and method of fabricating the same |
US20220352067A1 (en) * | 2021-04-29 | 2022-11-03 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor structure and method of manufacturing the same |
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US9401345B2 (en) | 2014-09-01 | 2016-07-26 | Freescale Semiconductor, Inc. | Semiconductor device package with organic interposer |
CN105470210B (en) * | 2014-09-12 | 2018-04-10 | 旺宏电子股份有限公司 | Semiconductor device and its manufacture method |
JP6341822B2 (en) * | 2014-09-26 | 2018-06-13 | 三菱電機株式会社 | Semiconductor device |
KR102279152B1 (en) * | 2014-12-11 | 2021-07-19 | 엘지이노텍 주식회사 | Interposer for wiring and electric module having the same |
US9269659B1 (en) | 2015-01-08 | 2016-02-23 | Freescale Semiconductor, Inc. | Interposer with overmolded vias |
CN104701192B (en) * | 2015-03-11 | 2018-05-22 | 华进半导体封装先导技术研发中心有限公司 | Protect the structure and preparation process of ultra-thin silicon substrate |
KR102387826B1 (en) * | 2019-04-01 | 2022-04-18 | 주식회사 아모센스 | Interposer and method thereof |
WO2020204493A1 (en) * | 2019-04-01 | 2020-10-08 | 주식회사 아모센스 | Interposer and method for manufacturing same |
KR102386969B1 (en) * | 2019-04-01 | 2022-04-18 | 주식회사 아모센스 | Interposer with multiple structure and method thereof |
CN113035833B (en) * | 2021-05-28 | 2021-09-28 | 浙江集迈科微电子有限公司 | Multilayer wiring adapter plate and preparation method thereof |
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US20150130077A1 (en) * | 2010-09-17 | 2015-05-14 | Tessera, Inc. | Staged via formation from both sides of chip |
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US20180114743A1 (en) * | 2010-09-17 | 2018-04-26 | Tessera, Inc. | Staged via formation from both sides of chip |
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US10483194B2 (en) * | 2014-12-03 | 2019-11-19 | Phoenix Pioneer Technology Co., Ltd. | Interposer substrate and method of fabricating the same |
US20220352067A1 (en) * | 2021-04-29 | 2022-11-03 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor structure and method of manufacturing the same |
US11830806B2 (en) * | 2021-04-29 | 2023-11-28 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor structure and method of manufacturing the same |
US20240047345A1 (en) * | 2021-04-29 | 2024-02-08 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor structure and method of manufacturing the same |
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Also Published As
Publication number | Publication date |
---|---|
KR20110028959A (en) | 2011-03-22 |
US20130029031A1 (en) | 2013-01-31 |
KR101060862B1 (en) | 2011-08-31 |
US9196506B2 (en) | 2015-11-24 |
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