WO2020129299A1 - 積層シート及びその使用方法 - Google Patents
積層シート及びその使用方法 Download PDFInfo
- Publication number
- WO2020129299A1 WO2020129299A1 PCT/JP2019/032457 JP2019032457W WO2020129299A1 WO 2020129299 A1 WO2020129299 A1 WO 2020129299A1 JP 2019032457 W JP2019032457 W JP 2019032457W WO 2020129299 A1 WO2020129299 A1 WO 2020129299A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- conductive film
- layer
- laminated sheet
- conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors
- H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors incorporating printed capacitors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P74/00—Testing or measuring during manufacture or treatment of wafers, substrates or devices
- H10P74/20—Testing or measuring during manufacture or treatment of wafers, substrates or devices characterised by the properties tested or measured, e.g. structural or electrical properties
- H10P74/207—Electrical properties, e.g. testing or measuring of resistance, deep levels or capacitance-voltage characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/129—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of components or parts made of semiconducting materials; of LV components or parts
-
- 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
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors
-
- 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
-
- 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
- H05K3/007—Manufacture or processing of a substrate for a printed circuit board supported by a temporary or sacrificial carrier
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/01—Manufacture or treatment
- H10W70/05—Manufacture or treatment of insulating or insulated package substrates, or of interposers, or of redistribution layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/68—Shapes or dispositions thereof
- H10W70/685—Shapes or dispositions thereof comprising multiple insulating layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/69—Insulating materials thereof
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/7424—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support used as a support during the manufacture of self-supporting substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/70—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping
- H10P72/74—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support
- H10P72/743—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for supporting or gripping using temporarily an auxiliary support used as a support during manufacture of interconnect decals or build up layers
Definitions
- the present invention relates to a laminated sheet and a method of using the laminated sheet.
- the coreless build-up method is a method in which insulating layers and wiring layers are alternately laminated (build-up) to form a multilayer without using a so-called core substrate.
- the coreless build-up method it has been proposed to use a copper foil with a carrier so that the support and the multilayer printed wiring board can be easily separated.
- an insulating resin layer is attached to a carrier surface of a copper foil with a carrier to form a support, and a photoresist is formed on the ultrathin copper layer side of the copper foil with a carrier.
- a method for manufacturing a device mounting package substrate is disclosed.
- Patent Document 1 a copper foil with a carrier in which the thickness of the ultrathin copper layer is 1 ⁇ m or less is desired. Therefore, in order to reduce the thickness of the ultrathin copper layer, it has been proposed to form the ultrathin copper layer by a vapor phase method such as sputtering.
- a vapor phase method such as sputtering.
- Patent Document 2 International Publication No. 2017/150283
- a carrier in which a release layer, an antireflection layer, and an ultrathin copper layer for example, a film thickness of 300 nm
- Patent Document 3 International Publication No.
- an intermediate layer for example, an adhesion metal layer and a peeling auxiliary layer
- a peeling layer and an ultrathin copper layer for example, a film thickness of 300 nm
- a carrier such as a glass sheet.
- a copper foil with a carrier formed by sputtering by providing an intermediate layer made of a predetermined metal to provide excellent stability of mechanical peel strength of the carrier, and by making the antireflection layer exhibit a desirable dark color, an image can be obtained. It has also been taught to improve visibility in inspections (eg, automated image inspection (AOI)).
- AOI automated image inspection
- a metal peeling layer is formed on the main surface of a support made of glass or a silicon wafer, an insulating resin layer is formed thereon, and a metal peeling layer is formed thereon.
- the rewiring layer With the recent reduction in size and weight of electronic devices, it is desired that the rewiring layer have a wiring pattern in which the line/space (L/S) is extremely highly miniaturized.
- a rewiring layer is formed by the above-mentioned build-up method or the like on a copper foil with a carrier provided with an ultrathin copper layer having a reduced thickness as shown in Patent Documents 2 and 3. It is possible to do it.
- the copper foil with a carrier has a function of peeling the carrier, it has an advantage that the carrier that has served as a support can be easily peeled off from the laminate including the rewiring layer.
- the present inventors have recently provided a layered structure in which an insulating film is interposed between conductive films on a carrier with a peeling function, so that the above layered structure can be formed even though it is in the form of a laminated sheet useful for forming a rewiring layer. It has been found that it functions as a capacitor and can efficiently perform electrical inspection of a rewiring layer that will be formed later.
- an object of the present invention is to provide a laminated sheet which is a sheet form useful for forming a redistribution layer and which can efficiently perform an electrical inspection of a redistribution layer formed later.
- Carrier with peeling function A first conductive film provided on the carrier with a peeling function, An insulating film provided on the first conductive film, A second conductive film provided on the insulating film; A laminated sheet comprising A stack in which the second conductive film is used for forming a redistribution layer, and the first conductive film, the insulating film, and the second conductive film function as a capacitor for performing an electrical inspection of the redistribution layer.
- Seats are provided.
- a method of using a laminated sheet which is performed by measuring (mainly impedance or capacitance).
- a method for manufacturing a semiconductor package which includes the step of using the laminated sheet.
- the laminated sheet 10 of the present invention includes a carrier 12 with a peeling function, a first conductive film 14, an insulating film 16, and a second conductive film 18 in this order.
- the first conductive film 14 is provided on the carrier 12 with a peeling function.
- the insulating film 16 is provided on the first conductive film 14.
- the second conductive film 18 is provided on the insulating film 16 and used for forming the redistribution layer 20. Then, the first conductive film 14, the insulating film 16, and the second conductive film 18 function as a capacitor for performing an electrical inspection of the redistribution layer 20.
- the laminated sheet 10 may have the functional layer 13 between the carrier 12 with a peeling function and the first conductive film 14.
- Each of the above-mentioned various layers may be a single layer or a plurality of layers. Further, the above-mentioned various layers may be sequentially provided on both surfaces of the carrier 12 with a peeling function so as to be vertically symmetrical.
- the layer structure in which the insulating film 16 is interposed between the first conductive film 14 and the second conductive film 18 on the carrier 12 with peeling function a form of a laminated sheet useful for forming the redistribution layer 20.
- the first conductive film 14, the insulating film 16, and the second conductive film 18 function as a capacitor, so that the electrical inspection of the redistribution layer 20 formed by using the second conductive film 18 is efficiently performed. It becomes possible.
- the rewiring layer means a layer including an insulating layer and a wiring layer formed inside and/or on the surface of the insulating layer.
- the chip electrodes arranged on the semiconductor chip and the terminals arranged on the printed wiring board at a pitch larger than the chip electrodes can be electrically connected.
- the redistribution layer 20 may be formed according to a known method and is not particularly limited.
- the rewiring layer 20 can be formed by alternately laminating the insulating layers and the wiring layers to form a multilayer by the build-up method described above.
- the carrier 12 with a peeling function includes a carrier 12a and a peeling functional film 12b provided on the first conductive film 14 (the functional layer 13 if present) side of the carrier 12a.
- the peeling functional film 12b is a layer that allows the carrier 12a to be peeled from the first conductive film 14. That is, the carrier 12a may have the peeling function by itself and thus may constitute the carrier 12 with the peeling function by itself, but typically, the peeling functional film 12b is provided on the first conductive film 14 side of the carrier 12a. By providing, the peeling function is given afterwards.
- the laminated sheet 10 employs the carrier 12 with a peeling function, after the formation of the rewiring layer 20, the carrier functioning as a support can be easily peeled and removed from the rewiring layer 20. You can If desired, the laminated sheet 10 may have an intermediate layer (not shown) between the carrier 12a and the peeling functional film 12b.
- the total thickness of the laminated sheet 10 is not particularly limited, but is preferably 500 ⁇ m or more and 3000 ⁇ m or less, more preferably 700 ⁇ m or more and 2500 ⁇ m or less, further preferably 900 ⁇ m or more and 2000 ⁇ m or less, and particularly preferably 1000 ⁇ m or more and 1700 ⁇ m or less.
- the size of the laminated sheet 10 is not particularly limited, but it is preferably 10 cm square or more, more preferably 20 cm square or more, and further preferably 25 cm square or more.
- the upper limit of the size of the laminated sheet 10 is not particularly limited, but 1000 cm square in the case of a sheet piece, and 1250 cm in width ⁇ 3000 m in length in the case of a roll shape is mentioned as one guideline of the upper limit.
- the above-mentioned layers are preferably present over the entire size of the laminated sheet 10. Further, the laminated sheet 10 has a sheet form that can be handled by itself before and after the formation of the rewiring layer.
- the material of the carrier 12a may be glass, ceramics, resin, or metal.
- the form of the carrier 12a may be any of sheet, film, plate, and foil. Further, the carrier 12a may be a laminate of these sheets, films, plates, foils and the like.
- the carrier 12a may be a glass plate, a ceramic plate, a metal plate, or the like that can function as a rigid support, or may be a metal foil, a resin film, or the like that does not have rigidity.
- Preferred examples of the metal of the carrier 12a include copper, titanium, nickel, stainless steel, aluminum and the like.
- Preferred examples of ceramics include alumina, zirconia, silicon nitride, aluminum nitride, and various fine ceramics.
- the resin include PET resin, PEN resin, aramid resin, polyimide resin, nylon resin, liquid crystal polymer, polyether ether ketone resin, polyamide resin, polyamide imide resin, polyether sulfone resin, polyphenylene sulfide resin, and PTFE resin. , ETFE resin and the like. More preferably, the thermal expansion coefficient (CTE) is less than 25 ppm/K (typically 1.0 ppm/K or more and 23 ppm/K or less) from the viewpoint of preventing warpage of the coreless support due to heating when mounting an electronic element.
- CTE thermal expansion coefficient
- the carrier 12a preferably has a Vickers hardness of 100 HV or more, more preferably 150 HV or more and 2500 HV or less.
- the carrier 12a is preferably composed of a resin film, glass or ceramics, more preferably glass or ceramics, and particularly preferably glass. For example, a glass sheet.
- the carrier 12a When glass is used as the carrier 12a, it is lightweight, has a low coefficient of thermal expansion, has a high insulating property, is rigid, and has a flat surface, so that it has the advantages that the surface of the second conductive film 18 can be extremely smooth. Further, when the carrier is glass, it has a surface flatness (coplanarity) advantageous when mounting an electronic element, and has chemical resistance in desmear and various plating steps in the manufacturing process of the redistribution layer 20. In addition, there is an advantage in that a chemical separation method can be adopted at the time of separating the laminated body with the rewiring layer.
- the glass constituting the carrier 12a include quartz glass, borosilicate glass, alkali-free glass, soda lime glass, aluminosilicate glass, and a combination thereof, and alkali-free glass is particularly preferable.
- Alkali-free glass is a glass that contains silicon dioxide, aluminum oxide, boron oxide, and an alkaline earth metal oxide such as calcium oxide or barium oxide as a main component, and further contains boric acid and does not substantially contain an alkali metal. That is.
- This alkali-free glass has a low thermal expansion coefficient within a wide temperature range from 0° C. to 350° C.
- the thickness of the carrier is preferably 100 ⁇ m or more and 2000 ⁇ m or less, more preferably 300 ⁇ m or more and 1800 ⁇ m or less, and further preferably 400 ⁇ m or more and 1100 ⁇ m or less. When the thickness is within such a range, it is possible to realize the thinning of the rewiring layer 20 and the reduction of the warp that occurs when the electronic component is mounted, while ensuring an appropriate strength that does not hinder the handling. ..
- the surface of the carrier 12a on the side of the first conductive film 14 preferably has an arithmetic average roughness Ra of 0.1 nm or more and 70 nm or less, which is measured using a laser microscope according to JIS B 0601-2001, and more It is preferably 0.5 nm or more and 60 nm or less, more preferably 1.0 nm or more and 50 nm or less, particularly preferably 1.5 nm or more and 40 nm or less, and most preferably 2.0 nm or more and 30 nm or less.
- the intermediate layer provided between the carrier 12a and the peeling function film 12b may have a one-layer structure or a two-layer structure or more if desired.
- the intermediate layer is the first intermediate layer provided directly on the carrier 12a and the first intermediate layer provided adjacent to the peeling function film 12b. 2 intermediate layers.
- the first intermediate layer is preferably a layer composed of at least one metal selected from the group consisting of Ti, Cr, Al, and Ni from the viewpoint of ensuring adhesion with the carrier 12a.
- the first intermediate layer may be a pure metal or an alloy.
- the thickness of the first intermediate layer is preferably 5 nm or more and 500 nm or less, more preferably 10 nm or more and 300 nm or less, further preferably 18 nm or more and 200 nm or less, and particularly preferably 20 nm or more and 100 nm or less.
- the second intermediate layer is preferably a layer made of Cu from the viewpoint of controlling the peel strength with the peeling functional film 12b to a desired value.
- the thickness of the second intermediate layer is preferably 5 nm or more and 500 nm or less, more preferably 10 nm or more and 400 nm or less, further preferably 15 nm or more and 300 nm or less, and particularly preferably 20 nm or more and 200 nm or less.
- Another intervening layer may be present between the first intermediate layer and the second intermediate layer, and examples of the constituent material of the intervening layer include Ti, Cr, Mo, Mn, W and Ni. Examples thereof include alloys of Cu with at least one metal selected from the group.
- the intermediate layer has a single-layer structure, the above-described first intermediate layer may be directly used as the intermediate layer, or the first intermediate layer and the second intermediate layer may be replaced with a single intermediate alloy layer. May be.
- This intermediate alloy layer has a content of at least one metal selected from the group consisting of Ti, Cr, Mo, Mn, W, Al and Ni of 1.0 at% or more, and a Cu content of 30 at. It is preferably composed of a copper alloy having a content of at least %.
- the thickness of the intermediate alloy layer is preferably 5 nm or more and 500 nm or less, more preferably 10 nm or more and 400 nm or less, further preferably 15 nm or more and 300 nm or less, and particularly preferably 20 nm or more and 200 nm or less.
- the thickness of each layer described above is a value measured by analyzing a cross section of the layer with an energy dispersive X-ray spectroscopic analyzer (TEM-EDX) of a transmission electron microscope.
- TEM-EDX energy dispersive X-ray spectroscopic analyzer
- the metal forming the intermediate layer may contain unavoidable impurities resulting from the raw material components and the film forming process.
- the presence of oxygen contaminated due to the exposure is allowed.
- the intermediate layer is preferably a layer formed by a vapor phase method such as sputtering.
- the intermediate layer may be manufactured by any method, but a layer formed by a magnetron sputtering method using a metal target is particularly preferable in that the uniformity of the film thickness distribution can be improved.
- the peeling function film 12b provided as desired is a layer that enables or facilitates peeling of the carrier 12a.
- the release functional film 12b may be either an organic release layer or an inorganic release layer.
- organic components used in the organic release layer include nitrogen-containing organic compounds, sulfur-containing organic compounds, and carboxylic acids.
- nitrogen-containing organic compounds include triazole compounds and imidazole compounds.
- examples of the inorganic component used in the inorganic release layer include at least one of Cu, Ti, Al, Nb, Zr, Cr, W, Ta, Co, Ag, Ni, In, Sn, Zn, Ga and Mo. The above metal oxides, carbon layers and the like can be mentioned.
- the peeling functional film 12b is preferably a layer mainly containing carbon from the viewpoint of ease of peeling and film forming property, and more preferably a layer mainly containing carbon or hydrocarbons, and further preferably Is made of amorphous carbon which is a hard carbon film.
- the peeling functional film 12b (that is, the carbon layer) preferably has a carbon concentration measured by XPS of 60 atom% or more, more preferably 70 atom% or more, further preferably 80 atom% or more, particularly preferably It is 85 atomic% or more.
- the upper limit of the carbon concentration is not particularly limited and may be 100 atom %, but 98 atom% or less is realistic.
- the peeling functional film 12b may contain unavoidable impurities (for example, oxygen, carbon, hydrogen and the like derived from ambient environment such as atmosphere). Further, metal atoms may be mixed into the peeling function film 12b (particularly the carbon layer) due to the film forming method of the first conductive film 14 and the like to be laminated later. Carbon has low mutual diffusivity and reactivity with carriers, and prevents the formation of metal bonds between the copper foil layer and the bonding interface due to high temperature heating even when subjected to press working at a temperature exceeding 300°C. Thus, it is possible to maintain a state in which the carrier can be easily peeled off and removed.
- unavoidable impurities for example, oxygen, carbon, hydrogen and the like derived from ambient environment such as atmosphere.
- metal atoms may be mixed into the peeling function film 12b (particularly the carbon layer) due to the film forming method of the first conductive film 14 and the like to be laminated later.
- Carbon has low mutual diffusivity and reactivity with carriers, and prevent
- the peeling function film 12b is also preferably a layer formed by a vapor phase method such as sputtering from the viewpoint of suppressing excessive impurities in the amorphous carbon and the continuous productivity with the formation of the intermediate layer described above. ..
- the thickness of the peeling function film 12b is preferably 1 nm or more and 20 nm or less, and more preferably 1 nm or more and 10 nm or less. This thickness is a value measured by analyzing the layer cross section with an energy dispersive X-ray spectroscopic analyzer (TEM-EDX) of a transmission electron microscope.
- TEM-EDX energy dispersive X-ray spectroscopic analyzer
- the functional layer 13 provided as desired is not particularly limited as long as it imparts a desired function such as a function of controlling the peel strength with the carrier with a peeling function 12 to a desired value.
- the functional layer 13 is preferably a layer composed of at least one metal selected from the group consisting of Ti, Cu, Ni, Ta, W, Al, Co, Fe, Mo, Cr, Ag and Si. It may be a pure metal or an alloy.
- the metal forming the functional layer 13 may contain inevitable impurities due to the raw material components, the film forming process, and the like.
- the functional layer 13 is exposed to the atmosphere after being formed, the presence of oxygen mixed in due to the exposure is allowed.
- the thickness of the functional layer 13 is preferably 10 nm or more and 500 nm or less, more preferably 30 nm or more and 300 nm or less, further preferably 50 nm or more and 250 nm or less, and particularly preferably 80 nm or more and 200 nm or less.
- the first conductive film 14 is a layer having conductivity and corresponds to an electrode portion in the capacitor.
- the first conductive film 14 is preferably a metal film or a conductive polymer film from the viewpoint of imparting desired conductivity.
- the first conductive film 14 is made of Al, Ag, Cu, Ni, Ti or Ta from the viewpoint of realizing excellent conductivity and stability while reducing the cost.
- the first conductive film 14 when the first conductive film is a conductive polymer film, the first conductive film 14 preferably contains a polythiophene-based polymer, a polyacetylene-based polymer, a polyaniline-based polymer, a polypyrrole-based polymer, or a combination thereof.
- the thickness of the first conductive film 14 is preferably 5 nm or more and 1000 nm or less, more preferably 10 nm or more and 800 nm or less, further preferably 12 nm or more and 500 nm or less, and particularly preferably 15 nm or more and 400 nm or less.
- the first conductive film 14 is preferably a layer formed by a vapor phase method such as sputtering from the viewpoint of improving the uniformity of the film thickness distribution and the continuous productivity with the formation of other layers. ..
- the insulating film 16 is a layer having an insulating property and corresponds to an insulator (dielectric) portion in the capacitor.
- the insulating film 16 is an oxide film, a nitride film, a carbonized film, a fluoride film, an insulating resin film (for example, epoxy) from the viewpoint of ensuring the adhesiveness with the first conductive film 14 and the adhesiveness with the second conductive film 18.
- Resin film polyimide resin film, ethylene resin film, phenol resin film, polypropylene terephthalate (PPT) resin film, acrylonitrile-butadiene-styrene copolymerization (ABS) resin film, nylon resin film, polybutylene terephthalate (PBT) resin film), Or a combination thereof, more preferably an oxide film, a nitride film, a carbonized film, a fluoride film, an epoxy resin film, a polyimide resin film, an ethylene resin film, a phenol resin film, a polypropylene terephthalate (PPT) resin film, Acrylonitrile/butadiene/styrene copolymer (ABS) resin film, nylon resin film, polybutylene terephthalate (PBT) resin film, or a combination thereof, more preferably oxide film, nitride film, carbonized film, fluoride film, epoxy resin film , Polyimide resin film, ethylene resin film, Poly
- preferable oxide film include SiO x film, AlO x film, TiO x film, ZrO x film, NbO x film, and TaO x film, and particularly preferred are SiO x film, AlO x film, and TaO x film. Is.
- Examples of preferable nitride film include SiN x film, AlN x film, TiN x film, ZrN x film, NbN x film, TaN x film, CrN x film and VN x film, and particularly preferably SiN x film, An AlN x film and a TiN x film.
- Examples of preferable carbonized film include TiC film, ZrC film, VC film, MoC film, NbC film, TaC film, NiC film, and CrC film, and particularly preferable are TiC film, ZrC film, and MoC film.
- the dielectric constant (relative permittivity) of the insulating film 16 is preferably 2 or more at a frequency of 1 MHz, more preferably 2.5 or more, further preferably 3.5 or more. , Particularly preferably 4.0 or more.
- the upper limit of the dielectric constant is not particularly limited, but it is typically 100 or less, and more typically 50 or less.
- the thickness of the insulating film 16 is preferably 0.1 ⁇ m or more and 10 ⁇ m or less, more preferably 0.3 ⁇ m or more and 8.0 ⁇ m or less, still more preferably 0.5 ⁇ m or more and 5.0 ⁇ m or less, and particularly preferably 0. It is 8 ⁇ m or more and 3.0 ⁇ m or less. This thickness is a value measured by analyzing the layer cross section with an energy dispersive X-ray spectroscopic analyzer (TEM-EDX) of a transmission electron microscope.
- the withstand voltage strength of the insulating film 16 is preferably 1.0 ⁇ 10 4 V/cm or more, more preferably 2.0 ⁇ 10 4 V/cm or more, and further preferably 5.0 ⁇ 10 4 V/cm.
- the insulating film 16 is preferably formed by a chemical vapor deposition (CVD) method, a sputtering method, a vapor deposition method, a slit coater method, a spin coater method, a spray method, or a combination thereof. Accordingly, these film forming methods can be appropriately selected.
- CVD chemical vapor deposition
- the second conductive film 18 is a layer having conductivity and corresponds to an electrode portion in the capacitor.
- the second conductive film 18 is used to form the redistribution layer 20. Therefore, the second conductive film 18 is preferably a seed layer for forming the redistribution layer 20.
- the second conductive film 18 is preferably a metal film.
- the second conductive film 18 is made of a transition element of Group 4, Group 5, Group 6, Group 9, Group 10 or Group 11, Al, Fe, Mg, Mn, Zn, In, Sn. Or a metal composed of a combination thereof (for example, an alloy or an intermetallic compound), more preferably Al, Ag, Cu, Ni, Ti, Ta, Fe, Co, Mo, Mg, Mn, Zn.
- the metal forming the second conductive film 18 may include inevitable impurities caused by the raw material components and the film forming process.
- the second conductive film 18 may be manufactured by any method, for example, a wet film forming method such as an electroless plating method or an electrolytic plating method, or a physical vapor deposition (PVD) such as sputtering or vacuum evaporation. It may be a layer formed by a method, chemical vapor deposition, or a combination thereof.
- the particularly preferable second conductive film 18 is a layer formed by a physical vapor deposition (PVD) method such as a sputtering method or a vacuum evaporation method, from the viewpoint of easily adapting to a fine pitch due to ultra-thinning, and most preferably sputtering. It is a layer manufactured by the method.
- PVD physical vapor deposition
- the second conductive film 18 is preferably a non-roughening layer, but as long as it does not hinder the formation of the wiring pattern at the time of manufacturing the rewiring layer 20, preliminary roughening, soft etching treatment or cleaning treatment, The secondary roughening may be caused by the redox treatment.
- the thickness of the second conductive film 18 is not particularly limited, it is preferably 10 nm or more and 1000 nm or less, more preferably 20 nm or more and 900 nm or less, and further preferably 30 nm or more and 700 nm or less in order to cope with the above-described fine pitch.
- This thickness is a value measured by analyzing the layer cross section with an energy dispersive X-ray spectroscopic analyzer (TEM-EDX) of a transmission electron microscope. It is preferable that the second conductive film having a thickness within such a range is manufactured by a sputtering method from the viewpoint of in-plane uniformity of the film thickness and productivity in a sheet shape or a roll shape.
- TEM-EDX energy dispersive X-ray spectroscopic analyzer
- the surface of the second conductive film 18 opposite to the insulating film 16 is measured using a laser microscope according to JIS B 0601-2001, and is 1.0 nm or more and 100 nm or less. It is preferable to have an arithmetic mean roughness Ra of 2.0 nm or more, more preferably 2.0 nm or more and 40 nm or less, further preferably 3.0 nm or more and 35 nm or less, particularly preferably 4.0 nm or more and 30 nm or less, and most preferably 5.0 nm or more and 15 nm. It is as follows.
- the line/space (L/S) in the redistribution layer 20 manufactured using the laminated sheet 10 is 13 ⁇ m or less/13 ⁇ m or less (for example, from 12 ⁇ m/12 ⁇ m to 2 ⁇ m/2 ⁇ m). ) Is suitable for forming a wiring pattern that is highly miniaturized to such a degree.
- Each of the first conductive film 14 and the second conductive film 18 is selected from the group consisting of Al, Ag, Cu, Ni, Ti, Ta, Fe, Co, Mo, Mg, Mn, Zn, Cr, In and Sn. It is preferable that the insulating film 16 is at least one metal selected from the group consisting of an oxide film, a nitride film, an epoxy resin film, and a polyimide resin film. More preferably, each of the first conductive film 14 and the second conductive film 18 is at least one metal selected from the group consisting of Al, Cu, Ti, and Mo, and the insulating film 16 is an oxide film. It is at least one selected from the group consisting of an epoxy resin film and a polyimide resin film.
- the first conductive film 14, the insulating film 16, and the second conductive film 18 are layers that function as capacitors for performing the electrical inspection of the redistribution layer 20. It is possible to impart more suitable properties (such as capacitance and withstand voltage strength) to the capacitor.
- the carrier 12a described above is prepared, and an intermediate layer (for example, a first intermediate layer and a second intermediate layer) is optionally provided on the carrier 12a, and a release functional film 12b is optionally provided. It can be manufactured by forming the functional layer 13, the first conductive film 14, the insulating film 16, and the second conductive film 18 as desired.
- Each of the intermediate layer (if present), the peeling functional film 12b (if present), the functional layer 13 (if present), the first conductive film 14 and the second conductive film 18 is formed with a fine pitch by ultra-thinning. From the viewpoint of easily adapting to chemical conversion, the physical vapor deposition (PVD) method is preferably used.
- Examples of the physical vapor deposition (PVD) method include a sputtering method, a vacuum deposition method, and an ion plating method.
- the film thickness can be controlled in a wide range from 0.05 nm to 5000 nm, and a wide width or area.
- the sputtering method is most preferable from the viewpoint that the film thickness uniformity can be secured over the entire range.
- the film formation by the physical vapor deposition (PVD) method may be performed according to known conditions using a known vapor phase film forming apparatus and is not particularly limited.
- the sputtering method may be various known methods such as magnetron sputtering, two-pole sputtering method, opposed target sputtering method, etc. It is preferable in terms of high price. Sputtering may be performed by either DC (direct current) or RF (high frequency) power source. Further, a plate-type target whose target shape is widely known can be used, but it is preferable to use a cylindrical target from the viewpoint of target usage efficiency.
- the insulating film 16 is preferably formed by a chemical vapor deposition (CVD) method, a sputtering method, a vapor deposition method, a slit coater method, a spin coater method, a spray method, or a combination thereof.
- CVD chemical vapor deposition
- a sputtering method a vapor deposition method
- a slit coater method a spin coater method
- a spray method or a combination thereof.
- all layers of the intermediate layer (when present), the peeling functional film 12b (when present), the functional layer 13 (when present), the first conductive film 14, the insulating film 16 and the second conductive film 18 are formed.
- the manufacturing efficiency is significantly increased.
- the vapor phase method (preferably, each layer) of the intermediate layer (if present), the peeling functional film 12b (if present), the functional layer 13 (if present), the first conductive film 14, and the second conductive film 18 is preferable.
- the film formation by the sputtering method) and the film formation of the insulating film 16 by the above method will be described.
- the film formation of the first intermediate layer by a vapor phase method includes at least one selected from the group consisting of Ti, Cr, Al and Ni. It is preferable to use magnetron sputtering in a non-oxidizing atmosphere using a target made of a metal in terms of improving the film thickness distribution uniformity. The target purity is preferably 99.9 wt% or higher. As a gas used for sputtering, it is preferable to use an inert gas such as argon gas. The flow rate of the argon gas may be appropriately determined according to the sputtering chamber size and the film forming conditions and is not particularly limited.
- the pressure during film formation is preferably in the range of 0.1 Pa or more and 20 Pa or less.
- This pressure range may be set by adjusting the film-forming power and the flow rate of the argon gas according to the apparatus structure, capacity, vacuum pump exhaust capacity, film-forming power supply rated capacity, and the like.
- the sputtering power is film thickness uniformity of the film formation, in consideration of productivity and the like may be appropriately set within a range of 0.05 W / cm 2 or more 10.0 W / cm 2 or less per unit area of the target.
- the film formation of the second intermediate layer by the vapor phase method is preferably performed by magnetron sputtering in a non-oxidizing atmosphere using a copper target in terms of improving the film thickness distribution uniformity.
- the purity of the copper target is preferably 99.9 wt% or higher.
- an inert gas such as argon gas.
- the flow rate of the argon gas may be appropriately determined according to the sputtering chamber size and the film forming conditions and is not particularly limited.
- the pressure during film formation is preferably in the range of 0.1 Pa or more and 20 Pa or less.
- This pressure range may be set by adjusting the film-forming power and the flow rate of the argon gas according to the apparatus structure, capacity, vacuum pump exhaust capacity, film-forming power supply rated capacity, and the like. Further, the sputtering power is film thickness uniformity of the film formation, in consideration of productivity and the like may be appropriately set within a range of 0.05 W / cm 2 or more 10.0 W / cm 2 or less per unit area of the target.
- the intermediate layer uses an alloy target of Cu and at least one metal selected from the group consisting of Ti, Cr, Mo, Mn, W, Al and Ni, and
- the magnetron sputtering is preferably performed in an oxidizing atmosphere in order to improve the uniformity of film thickness distribution.
- the purity of the copper target is preferably 99.9 wt% or higher.
- an inert gas such as argon gas.
- the flow rate of the argon gas may be appropriately determined according to the sputtering chamber size and the film forming conditions and is not particularly limited.
- the pressure during film formation is preferably in the range of 0.1 Pa or more and 20 Pa or less.
- This pressure range may be set by adjusting the film-forming power and the flow rate of the argon gas according to the apparatus structure, capacity, vacuum pump exhaust capacity, film-forming power supply rated capacity, and the like.
- the sputtering power is film thickness uniformity of the film formation, in consideration of productivity and the like may be appropriately set within a range of 0.05 W / cm 2 or more 10.0 W / cm 2 or less per unit area of the target.
- the peeling functional film 12b is preferably formed by a vapor phase method in an inert atmosphere such as argon using a carbon target.
- the carbon target is preferably composed of graphite, but may contain unavoidable impurities (for example, oxygen and carbon derived from the ambient environment such as the atmosphere).
- the purity of the carbon target is preferably 99.99 wt% or more, more preferably 99.999 wt% or more.
- the pressure during film formation is preferably in the range of 0.1 Pa or more and 2.0 Pa or less.
- This pressure range may be set by adjusting the film-forming power and the flow rate of the argon gas according to the apparatus structure, capacity, vacuum pump exhaust capacity, film-forming power supply rated capacity, and the like. Further, the sputtering power is film thickness uniformity of the film formation, in consideration of productivity and the like may be appropriately set within a range of 0.05 W / cm 2 or more 10.0 W / cm 2 or less per unit area of the target.
- the first conductive film 14 and the second conductive film 18 are formed by a vapor phase method from Al, Ag, Cu, Ni, Ti, Ta, Fe, Co, Mo, Mg, Mn, Zn, Cr, In and Sn. It is preferable to carry out magnetron sputtering in a non-oxidizing atmosphere by using a target composed of at least one metal selected from the group consisting of the following, because the film thickness distribution uniformity can be improved.
- the target purity is preferably 99.9 wt% or higher.
- As a gas used for sputtering it is preferable to use an inert gas such as argon gas.
- the flow rate of the argon gas may be appropriately determined according to the sputtering chamber size and the film forming conditions and is not particularly limited.
- a stage cooling mechanism may be provided during sputtering.
- the pressure during film formation is preferably in the range of 0.1 Pa or more and 20 Pa or less. This pressure range may be set by adjusting the film-forming power and the flow rate of the argon gas according to the apparatus structure, capacity, vacuum pump exhaust capacity, film-forming power supply rated capacity, and the like.
- the sputtering power is film thickness uniformity of the film formation, in consideration of productivity and the like may be appropriately set within a range of 0.05 W / cm 2 or more 10.0 W / cm 2 or less per unit area of the target.
- the insulating film 16 is formed by at least one selected from the group consisting of oxides, nitrides, carbides, fluorides, epoxy resins, polyimide resins, ethylene resins, phenol resins, PPT resins, ABS resins, nylon resins and PBT resins. It is preferable to use one of them by a chemical vapor deposition (CVD) method, a sputtering method, an evaporation method, a slit coater method, a spin coater method, or a spray method, and depending on the material of the insulating film 16 to be used, these are used.
- the film forming method may be appropriately selected.
- the conditions of each film forming method are not particularly limited, and known conditions may be adopted as they are, or known conditions may be appropriately adjusted according to the material of the insulating film 16.
- the redistribution layer 20 can be manufactured using the laminated sheet 10 of the present invention. Then, the first conductive film 14, the insulating film 16, and the second conductive film 18 function as a capacitor, so that the electrical inspection of the manufactured redistribution layer 20 can be efficiently performed.
- the method of using the laminated sheet 10 includes (1) a rewiring layer forming step and (2) a rewiring layer electrical inspection step.
- the rewiring layer 20 is formed using the laminated sheet 10 of the present invention.
- the redistribution layer 20 can be formed by processing the second conductive film 18.
- the second conductive film 18 is included in a part of the redistribution layer 20.
- the rewiring layer 20 ′ may be formed on the second conductive film 18 without processing the second conductive film 18 itself.
- the redistribution layer 20′ can be formed.
- the second conductive film 18 itself does not form the redistribution layer 20′, it is preferable to remove the second conductive film 18 by flash etching or the like after peeling the carrier 12 with a peeling function.
- the method of forming the redistribution layer 20 is not particularly limited, and known methods shown in Patent Documents 2 to 4 can be adopted, for example.
- a photoresist layer is formed in a predetermined pattern on the surface of the second conductive film 18 in the laminated sheet 10.
- the photoresist is preferably a photosensitive film, for example a photosensitive dry film.
- the photoresist layer may be provided with a predetermined wiring pattern by exposure and development.
- An electrolytic copper plating layer is formed on the exposed surface of the second conductive film 18 (that is, the portion not masked with the photoresist layer).
- the electrolytic copper plating may be performed by a known method and is not particularly limited. Then, the photoresist layer is peeled off. As a result, the electrolytic copper plating layer remains in a wiring pattern shape, and the second conductive film 18 in a portion where the wiring pattern is not formed is exposed. The unnecessary portion of the second conductive film 18 is removed by flash etching to form a first wiring layer. After that, an insulating layer and an n-th wiring layer (n is an integer of 2 or more) are alternately formed on the surface of the laminated sheet 10 on which the first wiring layer is formed. In this way, the coreless support having the rewiring layer 20, which is a layer including the insulating layer and the wiring layer formed inside and/or on the surface of the insulating layer, can be obtained.
- the electrical characteristics mainly impedance or capacitance
- the carrier with peeling function 12 may be peeled and removed from the rewiring layer 20 in advance.
- the process of mounting the chip after forming the redistribution layer 20 in this way is a method called the RDL-First method. According to this method, the wiring layer on the surface of the coreless support and each build-up wiring layer to be laminated thereafter can be electrically inspected before mounting the chip, so that the defective portion of each wiring layer can be avoided. , Chips can be mounted only on non-defective parts.
- the RDL-First method is economically advantageous in comparison with the Chip-First method, which is a method of sequentially laminating wiring layers on the surface of the chip, in that waste of the chip can be avoided.
- the first conductive film 14, the insulating film 16 and the second conductive film 18 function as a capacitor, it is possible to efficiently perform the electrical inspection.
- the electronic element mounted on the redistribution layer 20 that is assumed as an optional step include a semiconductor element, a chip capacitor, a resistor, and the like.
- methods for mounting electronic elements include a flip chip mounting method and a die bonding method.
- the flip-chip mounting method is a method of joining the mounting pad of the electronic element and the rewiring layer 20.
- NCF Non-Conductive Film
- the die bonding adhesion method is a method of adhering the surface of the electronic element opposite to the mounting pad surface to the rewiring layer 20. For this adhesion, it is preferable to use a paste or film which is a resin composition containing a thermosetting resin and a heat conductive inorganic filler.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Laminated Bodies (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Parts Printed On Printed Circuit Boards (AREA)
Abstract
Description
剥離機能付キャリアと、
前記剥離機能付キャリア上に設けられる第1導電膜と、
前記第1導電膜上に設けられる絶縁膜と、
前記絶縁膜上に設けられる第2導電膜と、
を備えた積層シートであって、
前記第2導電膜が再配線層の形成に用いられ、かつ、前記第1導電膜、前記絶縁膜及び前記第2導電膜が前記再配線層の電気検査を行うためのキャパシタとして機能する、積層シートが提供される。
前記積層シートの前記第2導電膜を加工して再配線層を形成する、又は前記第2導電膜上に再配線層を形成する工程と、
前記再配線層に対して電気検査を行う工程と、
を含み、前記電気検査が、前記再配線層と前記第1導電膜との間に電圧を加えて、前記第1導電膜、前記絶縁膜及び前記第2導電膜をキャパシタとして機能させ、電気特性(主としてインピーダンス又は静電容量)を測定することにより行われる、積層シートの使用方法が提供される。
本発明の積層シートが図1に模式的に示される。図1に示されるように、本発明の積層シート10は、剥離機能付キャリア12と、第1導電膜14と、絶縁膜16と、第2導電膜18とをこの順に備えたものである。第1導電膜14は、剥離機能付キャリア12上に設けられる。絶縁膜16は、第1導電膜14上に設けられる。第2導電膜18は絶縁膜16上に設けられ、再配線層20の形成に用いられる。そして、第1導電膜14、絶縁膜16及び第2導電膜18が再配線層20の電気検査を行うためのキャパシタとして機能する。所望により、積層シート10は、剥離機能付キャリア12と第1導電膜14との間に機能層13を有していてもよい。上述の各種層はそれぞれ単層であってもよいし、複数の層からなるものであってもよい。また、剥離機能付キャリア12の両面に上下対称となるように上述の各種層を順に備えてなる構成としてもよい。このように、剥離機能付キャリア12上に第1導電膜14及び第2導電膜18間に絶縁膜16が介在する層構成を設けることで、再配線層20の形成に有用な積層シートの形態でありながら、第1導電膜14、絶縁膜16及び第2導電膜18がキャパシタとして機能し、それにより、第2導電膜18を用いて形成された再配線層20の電気検査を効率良く行うことが可能となる。
本発明による積層シート10は、上述したキャリア12aを用意し、キャリア12a上に、所望により中間層(例えば第1中間層及び第2中間層)、所望により剥離機能膜12b、所望により機能層13、第1導電膜14、絶縁膜16、及び第2導電膜18を形成することにより製造することができる。中間層(存在する場合)、剥離機能膜12b(存在する場合)、機能層13(存在する場合)、第1導電膜14及び第2導電膜18の各層の形成は、極薄化によるファインピッチ化に対応しやすい観点から、物理気相堆積(PVD)法により行われるのが好ましい。物理気相堆積(PVD)法の例としては、スパッタリング法、真空蒸着法、及びイオンプレーティング法が挙げられるが、0.05nmから5000nmまでといった幅広い範囲で膜厚制御できる点、広い幅ないし面積にわたって膜厚均一性を確保できる点等から、最も好ましくはスパッタリング法である。物理気相堆積(PVD)法による成膜は公知の気相成膜装置を用いて公知の条件に従って行えばよく特に限定されない。例えば、スパッタリング法を採用する場合、スパッタリング方式は、マグネトロンスパッタリング、2極スパッタリング法、対向ターゲットスパッタリング法等、公知の種々の方法であってよいが、マグネトロンスパッタリングが、成膜速度が速く生産性が高い点で好ましい。スパッタリングはDC(直流)及びRF(高周波)のいずれの電源で行ってもよい。また、ターゲット形状も広く知られているプレート型ターゲットを使用することができるが、ターゲット使用効率の観点から円筒形ターゲットを用いることが望ましい。一方、絶縁膜16の形成は、化学気相堆積(CVD)法、スパッタリング法、蒸着法、スリットコーター法、スピンコーター法、スプレー法、又はそれらの組合せにより行うのが好ましい。この点、中間層(存在する場合)、剥離機能膜12b(存在する場合)、機能層13(存在する場合)、第1導電膜14、絶縁膜16及び第2導電膜18の全ての層をスパッタリング法により形成することで、製造効率が格段に高くなる。以下、中間層(存在する場合)、剥離機能膜12b(存在する場合)、機能層13(存在する場合)、第1導電膜14、及び第2導電膜18の各層の気相法(好ましくはスパッタリング法)による成膜、並びに絶縁膜16の上記方法による成膜について説明する。
本発明の積層シート10を用いて再配線層20を製造することができる。そして、第1導電膜14、絶縁膜16及び第2導電膜18がキャパシタとして機能することで、製造した再配線層20の電気検査を効率良く行うことができる。以下、本発明の積層シート10の好ましい使用方法について説明する。この積層シート10の使用方法は、(1)再配線層の形成工程と、(2)再配線層の電気検査工程とを含む。
本発明の積層シート10を用いて再配線層20を形成する。再配線層20の形成は、第2導電膜18を加工することにより行うことができる。この場合、第2導電膜18は再配線層20の一部に含まれる。あるいは、第2導電膜18自体には加工を施さず、第2導電膜18上に再配線層20’を形成してもよい。この点、例えば第2導電膜18上にさらなる金属層(例えば銅層)を積層して、当該金属層を加工することにより再配線層20’を形成することができる。この場合、第2導電膜18自体は再配線層20’を構成しないため、剥離機能付キャリア12を剥離した後に、フラッシュエッチング等により第2導電膜18を除去するのが好ましい。
第2導電膜18を用いて形成した再配線層20に対して、電気検査を行う。この電気検査は、図2に示されるように、再配線層20と第1導電膜14との間に電圧を加えて、第1導電膜14、絶縁膜16及び第2導電膜18をキャパシタとして機能させ、電気特性(主としてインピーダンス又は静電容量)を測定することにより行えばよい。より具体的には、例えば特許文献5に示されるような公知の手法に基づいて、二つ以上の異なる周波数の電力を用いて配線間のインピーダンスを測定し、算出された二つ以上のインピーダンスの周波数に応じた変位量によって当該配線間の絶縁状態の良否を判定することができる。また、第1導電膜14に電気検査用プローブを当接する等して電気特性(主としてインピーダンス又は静電容量)を測定する場合には、第1導電膜14を露出させるために、必要に応じて再配線層20から剥離機能付キャリア12を予め剥離除去してもよい。
Claims (17)
- 剥離機能付キャリアと、
前記剥離機能付キャリア上に設けられる第1導電膜と、
前記第1導電膜上に設けられる絶縁膜と、
前記絶縁膜上に設けられる第2導電膜と、
を備えた積層シートであって、
前記第2導電膜が再配線層の形成に用いられ、かつ、前記第1導電膜、前記絶縁膜及び前記第2導電膜が前記再配線層の電気検査を行うためのキャパシタとして機能する、積層シート。 - 前記剥離機能付キャリアが、キャリアと、前記キャリアの前記第1導電膜側に設けられ、前記第1導電膜から前記キャリアを剥離可能とする剥離機能膜とを備えた、請求項1に記載の積層シート。
- 前記第1導電膜が金属膜又は導電性ポリマー膜である、請求項1又は2に記載の積層シート。
- 前記第1導電膜が、Al、Ag、Cu、Ni、Ti、Ta、Fe、Co、Mo、Mg、Mn、Zn、Cr、In及びSnからなる群から選択される少なくとも1種の金属を含む金属膜である、請求項3に記載の積層シート。
- 前記第1導電膜が、ポリチオフェン系ポリマー、ポリアセチレン系ポリマー、ポリアニリン系ポリマー及びポリピロール系ポリマーからなる群から選択される少なくとも1種を含む導電性ポリマー膜である、請求項3に記載の積層シート。
- 前記第1導電膜の厚さが5nm以上1000nm以下である、請求項1~5のいずれか一項に記載の積層シート。
- 前記第2導電膜が前記再配線層を形成するためのシード層である、請求項1~6のいずれか一項に記載の積層シート。
- 前記第2導電膜が金属膜である、請求項1~7のいずれか一項に記載の積層シート。
- 前記第2導電膜が、Al、Ag、Cu、Ni、Ti、Ta、Fe、Co、Mo、Mg、Mn、Zn、Cr、In及びSnからなる群から選択される少なくとも1種の金属を含む金属膜である、請求項1~8のいずれか一項に記載の積層シート。
- 前記第2導電膜の厚さが10nm以上1000nm以下である、請求項1~9のいずれか一項に記載の積層シート。
- 前記絶縁膜の誘電率が周波数1MHzにおいて2以上である、請求項1~10のいずれか一項に記載の積層シート。
- 前記絶縁膜の厚さが0.1μm以上10μm以下である、請求項1~11のいずれか一項に記載の積層シート。
- 前記絶縁膜の耐電圧強度が1.0×104V/cm以上である、請求項1~12のいずれか一項に記載の積層シート。
- 前記絶縁膜が、酸化膜、窒化膜、炭化膜、フッ化膜、エポキシ樹脂膜、ポリイミド樹脂膜、エチレン樹脂膜、フェノール樹脂膜、PPT樹脂膜、ABS樹脂膜、ナイロン樹脂膜及びPBT樹脂膜からなる群から選択される少なくとも1種である、請求項1~13のいずれか一項に記載の積層シート。
- 前記第1導電膜及び前記第2導電膜の各々が、Al、Ag、Cu、Ni、Ti、Ta、Fe、Co、Mo、Mg、Mn、Zn、Cr、In及びSnからなる群から選択される少なくとも1種の金属であり、かつ、前記絶縁膜が酸化膜、窒化膜、エポキシ樹脂膜及びポリイミド樹脂膜からなる群から選択される少なくとも1種である、請求項1~14のいずれか一項に記載の積層シート。
- 請求項1~15のいずれか一項に記載の積層シートの前記第2導電膜を加工して再配線層を形成する、又は前記第2導電膜上に再配線層を形成する工程と、
前記再配線層に対して電気検査を行う工程と、
を含み、前記電気検査が、前記再配線層と前記第1導電膜との間に電圧を加えて、前記第1導電膜、前記絶縁膜及び前記第2導電膜をキャパシタとして機能させ、電気特性を測定することにより行われる、積層シートの使用方法。 - 請求項16に記載の工程を含む、半導体パッケージの製造方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201980077735.5A CN113169134B (zh) | 2018-12-18 | 2019-08-20 | 层叠片及其使用方法 |
| JP2020561146A JP7236464B2 (ja) | 2018-12-18 | 2019-08-20 | 積層シート及びその使用方法 |
| KR1020217011004A KR102675408B1 (ko) | 2018-12-18 | 2019-08-20 | 적층 시트 및 그 사용 방법 |
| US17/349,320 US11961771B2 (en) | 2018-12-18 | 2021-06-16 | Laminate sheet and method of use thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-236305 | 2018-12-18 | ||
| JP2018236305 | 2018-12-18 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/349,320 Continuation-In-Part US11961771B2 (en) | 2018-12-18 | 2021-06-16 | Laminate sheet and method of use thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020129299A1 true WO2020129299A1 (ja) | 2020-06-25 |
Family
ID=71102759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/032457 Ceased WO2020129299A1 (ja) | 2018-12-18 | 2019-08-20 | 積層シート及びその使用方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11961771B2 (ja) |
| JP (1) | JP7236464B2 (ja) |
| KR (1) | KR102675408B1 (ja) |
| CN (1) | CN113169134B (ja) |
| TW (1) | TWI741427B (ja) |
| WO (1) | WO2020129299A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240178228A (ko) * | 2023-06-21 | 2024-12-30 | 가부시키가이샤 니혼 마이크로닉스 | 전기적 접속 장치 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007242888A (ja) * | 2006-03-08 | 2007-09-20 | Sony Corp | 半導体パッケージ製造方法 |
| US20120097944A1 (en) * | 2010-10-26 | 2012-04-26 | Taiwan Semiconductor Manufacturing Company, Ltd. | TEST STRUCTURES FOR THROUGH SILICON VIAS (TSVs) OF THREE DIMENSIONAL INTEGRATED CIRCUIT (3DIC) |
| JP2013152109A (ja) * | 2012-01-24 | 2013-08-08 | Nidec-Read Corp | 絶縁検査装置及び絶縁検査方法 |
| WO2017150283A1 (ja) * | 2016-02-29 | 2017-09-08 | 三井金属鉱業株式会社 | キャリア付銅箔及びその製造方法、並びに配線層付コアレス支持体及びプリント配線板の製造方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7206450B2 (en) * | 2002-04-25 | 2007-04-17 | Microsoft Corporation | Compression of bi-level images with explicit representation of ink clusters |
| US6794273B2 (en) * | 2002-05-24 | 2004-09-21 | Fujitsu Limited | Semiconductor device and manufacturing method thereof |
| JP2004311912A (ja) * | 2002-12-06 | 2004-11-04 | Sony Corp | 回路基板モジュール及びその製造方法 |
| JP4273895B2 (ja) | 2003-09-24 | 2009-06-03 | 日立化成工業株式会社 | 半導体素子搭載用パッケージ基板の製造方法 |
| JP4063240B2 (ja) * | 2004-04-21 | 2008-03-19 | 日本電気株式会社 | 半導体装置搭載基板とその製造方法、並びに半導体パッケージ |
| TWI569705B (zh) * | 2011-03-30 | 2017-02-01 | 三井金屬礦業股份有限公司 | 多層印刷配線板的製造方法及以該製造方法所得之多層印刷配線板 |
| US9721854B2 (en) * | 2012-12-05 | 2017-08-01 | International Business Machines Corporation | Structure and method for in-line defect non-contact tests |
| JP2015035551A (ja) | 2013-08-09 | 2015-02-19 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
| WO2017149811A1 (ja) | 2016-02-29 | 2017-09-08 | 三井金属鉱業株式会社 | キャリア付銅箔、並びに配線層付コアレス支持体及びプリント配線板の製造方法 |
| JP6766507B2 (ja) * | 2016-08-02 | 2020-10-14 | 味の素株式会社 | 樹脂組成物 |
-
2019
- 2019-08-20 JP JP2020561146A patent/JP7236464B2/ja active Active
- 2019-08-20 CN CN201980077735.5A patent/CN113169134B/zh active Active
- 2019-08-20 WO PCT/JP2019/032457 patent/WO2020129299A1/ja not_active Ceased
- 2019-08-20 KR KR1020217011004A patent/KR102675408B1/ko active Active
- 2019-12-02 TW TW108143901A patent/TWI741427B/zh active
-
2021
- 2021-06-16 US US17/349,320 patent/US11961771B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007242888A (ja) * | 2006-03-08 | 2007-09-20 | Sony Corp | 半導体パッケージ製造方法 |
| US20120097944A1 (en) * | 2010-10-26 | 2012-04-26 | Taiwan Semiconductor Manufacturing Company, Ltd. | TEST STRUCTURES FOR THROUGH SILICON VIAS (TSVs) OF THREE DIMENSIONAL INTEGRATED CIRCUIT (3DIC) |
| JP2013152109A (ja) * | 2012-01-24 | 2013-08-08 | Nidec-Read Corp | 絶縁検査装置及び絶縁検査方法 |
| WO2017150283A1 (ja) * | 2016-02-29 | 2017-09-08 | 三井金属鉱業株式会社 | キャリア付銅箔及びその製造方法、並びに配線層付コアレス支持体及びプリント配線板の製造方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240178228A (ko) * | 2023-06-21 | 2024-12-30 | 가부시키가이샤 니혼 마이크로닉스 | 전기적 접속 장치 |
| KR102862888B1 (ko) * | 2023-06-21 | 2025-09-23 | 가부시키가이샤 니혼 마이크로닉스 | 전기적 접속 장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113169134B (zh) | 2024-03-08 |
| CN113169134A (zh) | 2021-07-23 |
| JPWO2020129299A1 (ja) | 2021-10-21 |
| KR102675408B1 (ko) | 2024-06-17 |
| KR20210104652A (ko) | 2021-08-25 |
| US11961771B2 (en) | 2024-04-16 |
| US20210313237A1 (en) | 2021-10-07 |
| TWI741427B (zh) | 2021-10-01 |
| TW202023817A (zh) | 2020-07-01 |
| JP7236464B2 (ja) | 2023-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6883010B2 (ja) | キャリア付銅箔、並びに配線層付コアレス支持体及びプリント配線板の製造方法 | |
| JP6779187B2 (ja) | キャリア付銅箔及びその製造方法、並びに配線層付コアレス支持体及びプリント配線板の製造方法 | |
| JP6824436B2 (ja) | 極薄銅箔及びキャリア付極薄銅箔、並びにプリント配線板の製造方法 | |
| JP2024061738A (ja) | キャリア付金属箔、及びそれを用いたミリ波アンテナ基板の製造方法 | |
| WO2020105535A1 (ja) | 積層体 | |
| US11961771B2 (en) | Laminate sheet and method of use thereof | |
| KR102766203B1 (ko) | 캐리어 구비 금속박 | |
| WO2020145003A1 (ja) | 積層体 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19901181 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020561146 Country of ref document: JP Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 20217011004 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19901181 Country of ref document: EP Kind code of ref document: A1 |