WO2020189873A1 - 반도체 패키지 제조공정을 위한 접착 테이프 및 그 제조방법 - Google Patents
반도체 패키지 제조공정을 위한 접착 테이프 및 그 제조방법 Download PDFInfo
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- WO2020189873A1 WO2020189873A1 PCT/KR2019/014463 KR2019014463W WO2020189873A1 WO 2020189873 A1 WO2020189873 A1 WO 2020189873A1 KR 2019014463 W KR2019014463 W KR 2019014463W WO 2020189873 A1 WO2020189873 A1 WO 2020189873A1
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- adhesive
- adhesive layer
- base film
- semiconductor package
- terminated
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- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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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
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/482—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 lead-in layers inseparably applied to the semiconductor body
- H01L23/4827—Materials
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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
- H01L23/552—Protection against radiation, e.g. light or electromagnetic waves
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
Definitions
- the present invention relates to an adhesive tape for a semiconductor package manufacturing process, and more particularly, to protect a plurality of protruding electrodes formed on a lower surface of a semiconductor package and a lower surface of a semiconductor package during the process of forming an EMI (Electro Magnetic Interference) shielding layer of a semiconductor package.
- the present invention relates to an adhesive tape for a semiconductor package manufacturing process and a method of manufacturing the same.
- BGA Bit Grid Array
- CSP Chip Scale Package
- the demand to increase the size of the battery and the demand to reduce the size of the terminal at the same time meet the demand to relatively reduce the size of the PCB occupied by the terminal. If the size of the PCB is reduced, the gap between the semiconductor devices included in the PCB is narrowed, and errors due to electromagnetic interference between the semiconductor devices inevitably occur.
- a technology for forming a shielding metal coating on the outer surface of the device by a method of covering a device shielding cap (CAP) or an EMI sputtering technology has been developed and introduced.
- the metal coating technology for shielding by sputtering refers to forming a metal thin film for shielding electromagnetic waves on the entire outer surface of the semiconductor device except for the connection terminal through a sputtering process.
- a BGA semiconductor package it is a method of not affecting the connection terminals during the sputtering process for shielding electromagnetic waves.
- the method of applying sputtering by placing the semiconductor package in a tape with holes the size of a semiconductor package and exposing only the upper surface of the package Patent Registration No. 10-1662068) has been proposed, but not only incurs excessive cost to form a hole in the tape, but also a problem in which a thin film due to sputtering is poorly deposited when the semiconductor package is not correctly placed in the hole. There is.
- An object of the present invention is to provide an adhesive tape for a semiconductor package manufacturing process and a method of manufacturing the same that can protect a lower surface of a semiconductor package and a plurality of protruding electrodes formed on the lower surface of a semiconductor package during a semiconductor package manufacturing process having a plurality of protruding electrodes. There is this.
- another object of the present invention is to provide an adhesive tape for a semiconductor package manufacturing process and a method for manufacturing the same that can be easily separated from a semiconductor package without residue after completing a predetermined manufacturing process.
- an adhesive tape for a semiconductor package manufacturing process attached to a lower surface of a semiconductor package in which a plurality of protruding electrodes are formed a first formed on a first base film Adhesive layer; A second base film formed on the first adhesive layer, the shape of which is deformed to correspond to the topology of the lower surface of the semiconductor package when attached to the lower surface of the semiconductor package, and contains a metal element so as to independently maintain the deformed shape between processes; And a second adhesive layer formed on the second base film, having a thickness thinner than that of the first adhesive layer, and having an adhesive force less than that of the first adhesive layer, wherein each of the first adhesive layer and the second adhesive layer An adhesive tape having a molecular structure having a spiral network structure and comprising a first adhesive composition containing silicone is provided.
- the release film may have an adhesive strength in the range of 3 gf / 25mm to 8 gf / 25mm.
- the first intermediate layer inserted between the first base film and the first adhesive layer; And a second intermediate layer inserted between the second base film and the second adhesive layer, wherein each of the first intermediate layer and the second intermediate layer has a helical network structure in a molecular structure and contains silicon.
- It includes an adhesive composition, and may have a basis weight in the range of 0.2 g/m 2 to 0.5 g/m 2 .
- the second adhesive composition is toluene, siloxane and silicone, di-methyl, hydroxy-terminated (Siloxanes and Silicones, di-Me, hydroxy-terminated; CAS No. 70131-67-8), and xylene ( Xylene), trimethylated silica, and ethylbenzene may be mixed.
- the first base film has a multilayer structure in which any one single layer or two or more are stacked selected from the group consisting of polyethylene terephthalate (PET), polyimide (PI), and polyolefin (PO), 10 It may have a thickness in the range of ⁇ m to 150 ⁇ m.
- PET polyethylene terephthalate
- PI polyimide
- PO polyolefin
- a surface in contact with the first adhesive layer may be surface-treated using a corona discharge treatment method or an ion assist reaction method.
- the first base film is modified in shape to correspond to the topology of the bottom surface of the semiconductor package when attached to the bottom of the semiconductor package, and contains a metal element to independently maintain the modified shape between processes.
- Each of the first base film and the second base film contains at least 99 wt% or more of aluminum (Al), and each of the first base film and the second base film containing aluminum is 6 kgf/mm 2 to 12 kgf It has a tensile strength in the range of /mm 2 and an elongation in the range of 8% to 16%, and may have a thickness in the range of 10 ⁇ m to 35 ⁇ m.
- each of the first base film and the second base film contains at least 99 wt% or more of copper (Cu), and each of the first base film and the second base film containing copper is 10 kgf/mm 2 to It has a tensile strength in the range of 26 kgf/mm 2 and an elongation in the range of 4% to 12%, and may have a thickness in the range of 10 ⁇ m to 35 ⁇ m.
- Cu copper
- the second base film has a thickness in the range of 10 ⁇ m to 35 ⁇ m, and as the size of the protruding electrode increases, the thickness of the second base film decreases within a set thickness range, and between the protruding electrodes As the spacing of is increased, the thickness of the second base film may increase within a set thickness range.
- the second base film is regularly arranged and includes a plurality of perforations penetrating through the second base film, and each of the plurality of perforations is selected from the group consisting of a polygonal, elliptical, or circular triangular or more It has a single plane shape, and the first adhesive layer and the second adhesive layer may be in direct contact through the plurality of perforations.
- the first adhesive layer may have a thickness in the range of 100 ⁇ m to 700 ⁇ m and an adhesive strength of at least 500 gf/25 mm
- the second adhesive layer may have a thickness in the range of 10 ⁇ m to 50 ⁇ m and a thickness of 200 gf/25 mm to It can have an adhesive strength in the range of 300 gf/25mm.
- the first adhesive layer has a thickness in the range of 100 ⁇ m to 700 ⁇ m, and as the size of the protruding electrode increases, the thickness of the first adhesive layer decreases within a set thickness range, and the gap between the protruding electrodes As this increases, the thickness of the first adhesive layer increases within a set thickness range, and the second adhesive layer has a thickness in the range of 10 ⁇ m to 50 ⁇ m, and as the size of the protruding electrode increases, the second adhesive layer increases within the set thickness range. As the thickness of the adhesive layer increases and the distance between the protruding electrodes increases, the thickness of the second adhesive layer may decrease within a set thickness range.
- the first adhesive composition may include an adhesive agent in which trimethylated silica, dimethyl siloxane copolymer, and ethylbenzene are mixed.
- the first adhesive composition may further include 0.5 to 1.5 parts by weight of a crosslinking agent, 0.5 to 1.5 parts by weight of an anchorage additive, and 0.5 to 1.8 parts by weight of a catalyst based on 100 parts by weight of the adhesive subject, and the adhesive subject is xylene.
- Xylene trimethylated silica, ethylbenzene and siloxane and silicone, di-methyl, vinyl group-terminated (Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083) -19-2) may include a mixed mixture.
- the first adhesive composition is 0.5 to 1.5 parts by weight of a crosslinking agent, 0.5 to 1.5 parts by weight of an anchorage additive, and a catalyst based on 100 parts by weight of the adhesive subject in which the first and second subjects are mixed in a ratio of 95:5 to 99:1. It may further contain 0.5 to 1.5 parts by weight, and the first subject is xylene, trimethylated silica, ethylbenzene, siloxane and silicon, di-methyl, vinyl group-terminated (Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No.
- 68083-19-2) may contain a mixture, and the second subject is siloxane and silicone, di-methyl, vinyl group-terminated
- the second subject is siloxane and silicone, di-methyl, vinyl group-terminated
- a mixture of shoes Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083-19-2) and 1-Ethynylcyclohexanol (CAS No. 78-27-3). It may include.
- the crosslinking agent may include a mixture of heptane, siloxane, silicon, and methyl hydrogen (Siloxanes and Silicones, Me hydrogen; CAS No. 63148-57-2), and the anchorage additive is trimethoxy[3 -(Oxiranylmethoxy)propyl]silane (Silane, trimethoxy[3-(oxiranylmethoxy)propyl]-; CAS No.
- trimethoxy[(3-oxiranylmethoxy)propyl]silane Siloxanes and Silicones di-Me, Me vinyl, hydroxy-terminated reaction products with trimethoxy[3-oxiranylmethoxy)propyl]silane combined with siloxanes and silicones, di-methyl, di-vinyl, hydroxy-terminated reaction products with trimethoxy[3-oxiranylmethoxy)propyl]silane ; CAS No. 102782-94-5), methanol (Methanol) and divinyl hexamethyl cyclotetrasiloxane (Divinyl hexamethyl cyclotetrasiloxane; CAS No.
- 17980-61-9) may be a mixture of a mixture, the catalyst is platinum, 1, 3-diethenyl-1,1,3,3-tetramethyldisiloxane complexes (Platinium 1,3-diethenyl-1,1,3,3-tetramethyldisiloxane complexes; CAS No. 68478-92-2), with siloxane Silicon, di-methyl, vinyl group-terminated (Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083-19-2), Tetramethyldivinyldisiloxane (CAS No. 2627-95) -4) and a mixture of siloxane and silicone, di-methyl, and hydroxy-terminated (Siloxanes and Silicones, di-Me, hydroxy-terminated; CAS No. 70131-67-8).
- platinum 1, 3-diethenyl-1,1,3,3-tetramethyldisiloxane complexes
- the first adhesive composition may further include 0.5 to 3 parts by weight of a polymerization initiator with respect to 100 parts by weight of the adhesive subject in which the third and fourth subjects are mixed in a ratio of 50:50 to 80:20, and the third The subject is xylene, ethylbenzene, toluene, siloxane and silicon, di-methyl, hydroxy-terminated reaction products of chlorotrimethylsilane, hydrochloric acid, isopropyl alcohol and sodium silicate (Siloxanes and silicones, di-Me, hydroxy-terminated reaction products with chlorotrimethylsilane, hydrochloric acid, iso-Pr alc. and sodium silicate; CAS No.
- 68440-70-0 may contain a mixture, and the fourth topic is Toluene, siloxane and silicone, di-methyl, hydroxy-terminated (Siloxanes and Silicones, di-Me, hydroxy-terminated; CAS No. 70131-67-8), Xylene, trimethylated
- the polymerization initiator may include benzoyl peroxide.
- the first adhesive composition may further include 0.5 to 3 parts by weight of a polymerization initiator with respect to 100 parts by weight of the adhesive subject in which the third and fifth subjects are mixed in a ratio of 50:50 to 80:20, and the third The subject is xylene, ethylbenzene, toluene, siloxane and silicon, di-methyl, hydroxy-terminated reaction products of chlorotrimethylsilane, hydrochloric acid, isopropyl alcohol and sodium silicate (Siloxanes and silicones, di-Me, hydroxy-terminated reaction products with chlorotrimethylsilane, hydrochloric acid, iso-Pr alc. and sodium silicate; CAS No.
- 68440-70-0 may contain a mixture, and the fifth topic is Toluene, siloxane and silicone, di-methyl, methyl vinyl, vinyl group-terminated (Siloxanes and Silicones, di-Me, Me vinyl, vinyl groupterminated; CAS No. 68083-18-1), Xylene ), Trimethylated silica, Ethylbenzene, siloxane and silicone, di-methyl, methyl vinyl, hydroxy-terminated (Siloxanes and Silicones, di-Me, Me vinyl, hydroxy-terminated; CAS) No. 67923-19-7) and 1-Ethynylcyclohexanol (1-Ethynylcyclohexanol; CAS No. 78-27-3) may contain a mixture, the polymerization initiator is benzoyl peroxide (Benzoyl Peroxide) It may include.
- a first base film comprising a polymer material or a metal material, a first adhesive layer having a helical network structure in a molecular structure and containing silicon, and fluorine are contained.
- Manufacturing a second tape comprising a second base film comprising a metallic material, a second adhesive layer having a helical network structure in a molecular structure, a second adhesive layer containing silicon, and a second release film containing fluorine are sequentially stacked; Removing the first release film from the first tape; And laminating the first tape and the second tape so that the first adhesive layer and the second base film are in contact with each other.
- the adhesive tape for a semiconductor package manufacturing process and a method of manufacturing the same according to the present invention provides the following effects.
- the adhesive tape for a semiconductor package manufacturing process according to the present invention has a very simple structure in which a first base film, a first adhesive layer, a second base film, and a second adhesive layer are sequentially stacked, so that productivity and price competitiveness can be improved. There is an effect.
- the first base film includes a single layer selected from the group consisting of polyethylene terephthalate (PET), polyimide (PI), and polyolefin (PO), or a multilayer in which two or more are stacked, the EMI shielding layer formation process There is an effect of easily securing the stress characteristics required in the adhesive tape for the semiconductor package manufacturing process used in the process.
- PET polyethylene terephthalate
- PI polyimide
- PO polyolefin
- the first base film is made of a polymer material
- surface treatment is performed on one surface of the first base film in contact with the first adhesive layer, so that even if a silicone material is used as the first adhesive layer, adhesion between them can be improved. There is an effect.
- the first base film has a thickness in the range of 10 ⁇ m to 150 ⁇ m, it has the effect of effectively maintaining a stress balance and facilitating handling of the adhesive tape in response to the topology of the lower surface of the semiconductor package in which a plurality of protruding electrodes are formed.
- the second base film is a semiconductor package
- its shape is transformed to correspond to the topology, and since it contains metal elements to independently maintain the transformed form between processes, it is used in the process of forming an EMI shielding layer.
- the adhesive properties and retention properties required by the adhesive tape.
- the first base film contains the same metal element as the second base film, there is an effect of more easily securing the above-described adhesive properties and retention properties.
- the second base film containing the metal element has a very thin thickness in the range of 10 ⁇ m to 35 ⁇ m, there is an effect of effectively maintaining a stress balance corresponding to the topology of the bottom surface of a semiconductor package in which a plurality of protruding electrodes are formed.
- each of the first adhesive layer and the second adhesive layer contains an adhesive theme in which trimethylated silica, dimethylsiloxane copolymer and ethylbenzene are mixed, there is no physical property modification due to heat generated during the EMI shielding layer formation process, and the semiconductor package manufacturing process There is an effect of easily securing the adhesive properties, retention properties, separation properties and stress properties required in the adhesive tape.
- each of the first adhesive layer and the second adhesive layer has a helical network structure based on a siloxane bond as a basic skeleton, even if a gap occurs between the semiconductor package and the adhesive tape in the area where the lower surface of the semiconductor package and the protruding electrode contact, the manufacturing process There is an effect of preventing excessive expansion of the voids (especially during processing in a high vacuum environment).
- the second adhesive layer has a very thin thickness in the range of 10 ⁇ m to 50 ⁇ m, it is easy to adhere and adhere according to the topology of the bottom surface of the semiconductor package in which a plurality of protruding electrodes are formed. There is an effect that can prevent this rising phenomenon.
- each of the first and second adhesive layers and the thickness of each of the first and second base films optimized for the size and spacing of the protruding electrodes of the semiconductor package, it is used in the process of forming the EMI shielding layer. There is an effect of more effectively securing adhesive properties, retention properties, separation properties, and stress properties required in an adhesive tape for a semiconductor package manufacturing process.
- the first and second tapes are laminated at the site where the semiconductor package manufacturing process is carried out to manufacture an adhesive tape, making it easy to transport and store.
- the quality of the tape can be improved, and there is an effect of improving the yield of the semiconductor package manufacturing process.
- FIG. 1 is a schematic cross-sectional view of an adhesive tape for a semiconductor package manufacturing process according to a first embodiment of the present invention.
- FIG. 2 is a view showing a cross-sectional shape of an adhesive tape for a semiconductor package manufacturing process according to a first embodiment of the present invention adhered to a lower surface of a semiconductor package.
- 3A and 3B are views showing a planar shape of a second base film applicable to the adhesive tape for a semiconductor package manufacturing process according to the first and second embodiments of the present invention.
- FIG. 4 is a schematic cross-sectional view of an adhesive tape for a semiconductor package manufacturing process according to a second embodiment of the present invention.
- FIG. 5 is a flow chart illustrating a manufacturing process of an adhesive tape for a semiconductor package manufacturing process according to an embodiment of the present invention.
- FIG. 6 is a flowchart illustrating a manufacturing process of a first tape and a second tape in an adhesive tape for a semiconductor package manufacturing process according to an embodiment of the present invention.
- first and second may be used to describe various components, but the components should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.
- An embodiment of the present invention to be described later is to provide an adhesive tape for a semiconductor package manufacturing process, and more particularly, of a semiconductor package having a plurality of protruding electrodes such as a ball grid array (BGA) and a land grid array (LGA).
- the purpose of the present invention is to provide an adhesive tape for a semiconductor package manufacturing process and a method of manufacturing the same that can protect a lower surface of a semiconductor package and a plurality of protruding electrodes formed on the lower surface of a semiconductor package during an EMI (Electro Magnetic Interference) shielding layer forming process.
- EMI Electro Magnetic Interference
- the adhesive tape for a semiconductor package manufacturing process commonly used in the process of forming an EMI shielding layer has an adhesion characteristic and a retention characteristic. ), there is a need to secure a remove characteristic and a stress characteristic.
- the base film and adhesive layer of the adhesive tape protrude regardless of the size (e.g., diameter or height) of the protruding electrode so that no air gap occurs in the area where the lower surface of the semiconductor package and the protruding electrode contact. It should be possible to adhere and adhere to the semiconductor package including the electrode and the protruding electrode corresponding to the topology of the bottom surface.
- the protruding electrode in a process environment for forming the EMI shielding layer, for example, in a high temperature and high vacuum environment, the protruding electrode must be adhered well without being pushed out. In other words, even in the process environment for forming the EMI shielding layer, the adhesive ability and adhesion ability must be maintained continuously.
- the adhesive tape when the adhesive tape is separated from the semiconductor package at room temperature and atmospheric pressure after completing the process of forming the EMI shielding layer, it is easily separated with little force, and at the same time, the lower surface of the semiconductor package and the protruding electrode No adhesive material should remain on the surface.
- it must have an adhesive force that can be easily separated through an automated facility that automatically separates the semiconductor package (or chip) from the adhesive tape, and is applied to a vacuum chuck or lift pin used in an automated facility. There should be no holes or tears.
- the maximum endurance tension of an automated facility that automatically separates a semiconductor package (or semiconductor chip) from an adhesive tape is around 500 gf/25mm, so it would be preferable in terms of separation characteristics that an adhesive tape has a lower adhesive strength.
- the EMI shielding layer is maintained in a state where the distance between adjacent semiconductor chips is kept constant.
- An appropriate level of tensile stress and compressive stress must be secured so that the formation process can proceed. That is, the adhesive tape must be able to stably maintain the stretched state and maintain a stress balance corresponding to the topology of the bottom surface of the semiconductor package including the protruding electrode.
- an embodiment of the present invention to be described later provides an adhesive tape for a semiconductor package manufacturing process capable of satisfying the adhesive properties, retention properties, separation properties, and stress properties required during the semiconductor package manufacturing process, in particular, the EMI shielding layer forming process.
- the adhesive tape for a semiconductor package according to an embodiment of the present invention may have a simple structure in which a base film and an adhesive layer are stacked in order to secure productivity and price competitiveness.
- the adhesive layer maintains chemical resistance, heat resistance, and cold resistance, has no outgassing, has a thickness that can be adhered and adhered according to the topology of the bottom of the semiconductor package in which a plurality of protruding electrodes are formed, and is soft and non-denatured for impregnation of the protruding electrodes.
- It can be made of a silicone material so that the residue is not transferred during desorption.
- the base film can stably maintain the tensioned state without stretching between the semiconductor package manufacturing processes, and at the same time, its shape can be deformed in response to the topology of the adherend surface, and the shape can be self-maintained between processes, high temperature and high vacuum. It can be made of a metal material so that degeneration and deformation do not occur in the environment.
- FIG. 1 is a schematic cross-sectional view of an adhesive tape for a semiconductor package manufacturing process according to a first embodiment of the present invention
- FIG. 2 is a schematic diagram of an adhesive tape for a semiconductor package manufacturing process according to a first embodiment of the present invention. It is a view showing a cross-sectional shape adhered to the lower surface of.
- 3A and 3B are views showing a planar shape of a second base film applicable to the adhesive tape for a semiconductor package manufacturing process according to the first and second embodiments of the present invention.
- the adhesive tape 10 for the manufacturing process of the semiconductor package 400 according to the first embodiment of the present invention includes a first tape 100 and a second tape 200 stacked. It can have a shape.
- the first tape 100 and the second tape 200 may be separately manufactured to facilitate transportation and storage, and the first tape 100 and the second tape 200 at the site during the semiconductor package 400 manufacturing process By laminating the adhesive tape 10 can be manufactured and used.
- the second tape 200 may be in contact with the lower surface of the semiconductor package 400 on which the plurality of protruding electrodes 410 are formed, and the plurality of protruding electrodes 410 formed on the lower surface of the semiconductor package 400 are formed by the second tape 200.
- the EMI shielding layer may be formed on the front surface of the semiconductor package 400 excluding the lower surface, that is, the upper surface and the side surface of the semiconductor package 400.
- the first tape 100 may serve to prevent the second tape 200 from being damaged between processes.
- the first tape 100 may also play a role of preventing a process failure from occurring even if the second tape 200 is partially damaged between processes.
- the protruding electrodes 410 in the process of pressing the semiconductor package 400 with the adhesive tape 10 to attach and adhere the adhesive tape 10 to the lower surface of the semiconductor package 400 on which the plurality of protruding electrodes 410 are formed, the protruding electrodes 410 ) Or/and the adhesive tape 10 may be torn by the edge of the semiconductor package 400.
- the adhesive tape 10 according to the first embodiment has a form in which the first tape 100 and the second tape 200 are stacked, it is possible to prevent the adhesive tape 10 from being damaged during the pressing process. .
- the second tape 200 having a relatively thin thickness compared to the first tape 100 is torn during the pressing process, the first tape 100 compensates for this, thereby preventing a process failure from occurring.
- the first tape 100 includes a first base film 110 including a polymer material or a metal material and a first adhesive layer 120 containing silicon.
- the second tape 200 may have a form in which a second base film 210 including a metal material and a second adhesive layer 220 containing silicon are sequentially stacked.
- one side and the other side of the second base film 210 may contact the first adhesive layer 120 and the second adhesive layer 220, respectively, and have a shape inserted therebetween.
- the first base film 110 when the first base film 110 includes a material different from that of the second base film 210, the first base film 110 may include a polymer material. Specifically, the first base film 110 stably maintains the tensioned state without stretching between the processes of the semiconductor package 400 and corresponds to the topology of the bottom surface of the semiconductor package 400 in which a plurality of protruding electrodes 410 are formed. It is possible to maintain the stress balance, and may include a polymer material that does not denature or deform in a high temperature and high vacuum environment. Accordingly, the first base film 110 is a single layer selected from the group consisting of polyethylene terephthalate (PET), polyimide (PI), and polyolefine (PO), or a multilayer in which two or more are stacked. It can have a structure.
- PET polyethylene terephthalate
- PI polyimide
- PO polyolefine
- the first base film 110 including a polymer material may have a thickness in the range of 10 ⁇ m to 150 ⁇ m.
- the thickness of the first base film 110 is less than 10 ⁇ m, it may be very difficult for the user to handle the adhesive tape 10, and when the thickness of the first base film 110 exceeds 150 ⁇ m, a plurality of It may be difficult to maintain a stress balance corresponding to the topology of the bottom surface of the semiconductor package 400 on which the protruding electrode 410 is formed.
- the stress balance is not maintained, the repulsive force between the semiconductor package 400 and the adhesive tape 10 increases, which causes the adhesion and adhesion between the semiconductor package 400 and the adhesive tape 10 to decrease. Can act as
- one surface of the first base film 110 in contact with the first adhesive layer 120 may be surface-treated to improve adhesion therebetween.
- the silicone material used as the first adhesive layer 120 is not easily mixed with, agitated, and adhered to different materials due to its unique chemical stability, so the surface of the first base film 110, which is not surface-treated, and the adhesive strength are low, and thus it is lifted. A phenomenon may occur or a defect in the form of transferring the adhesive material to the adherend may occur.
- the surface treatment is to prevent the occurrence of the above-described defects, and may use a corona discharge treatment method or an ion assisted reaction method.
- the surface-treated first base film 110 may have fine concave-convex formations, and due to the fine concave-convexity, the surface area and roughness of one surface of the first base film 110 may be increased.
- a dipole is formed inside the surface-treated first base film 110, and one surface of the first base film 110 in contact with the first adhesive layer 120 may have a state charged by the dipole. have.
- free-radicals having unpaired electrons may be attached to one surface of the surface-treated first base film 110. In this way, the surface area and roughness of one surface of the surface-treated first base film 110 increase, have a charged surface due to the dipole formed inside the first base film 110, and free electrons having unpaired electrons on the surface.
- the radicals are attached, even if the first adhesive layer 120 is formed using a silicone material, the adhesive strength between the first base film 110 and the first adhesive layer 120 can be effectively improved. That is, it is possible to prevent the first adhesive layer 120 containing silicon from peeling off from the first base film 110 through the surface treatment.
- the second base film 210 in the second tape 200 stably maintains a tensioned state without stretching between processes of the semiconductor package 400 and at the same time, a plurality of protruding electrodes 410
- the stress balance may be maintained, and may be made of a material that does not undergo degeneration or deformation in a high temperature and high vacuum environment.
- the shape may be modified to correspond to the topology of the bottom surface of the semiconductor package 400, and the modified shape to correspond to the topology of the bottom surface of the semiconductor package 400 between processes is independently maintained. I can.
- the second base film 210 may contain 99 wt% or more of metal elements.
- the second base film 210 may include 99 wt% or more of aluminum (Al).
- the second base film 210 contains an additive of 1 wt% or less in order to control the properties of the second base film 210, such as tensile strength and elongation.
- the additive may include any one or two or more selected from the group consisting of silicon (Si), iron (Fe), manganese (Mn), magnesium (Mg), zinc (Zn), and titanium (Ti).
- the second base film 210 is 99.35 wt% or more aluminum, 0.15 wt% or less silicon, 0.42 wt% or less iron, 0.05 wt% or less copper, 0.05 wt% or less manganese, 0.05 wt% or less Of magnesium, 0.1 wt% or less of zinc, and 0.06 wt% or less of titanium.
- 99.35 wt% or more of aluminum may refer to a weight ratio of 99.35 wt% or more and less than 100 wt%
- 0.15 wt% or less of silicon may refer to a weight ratio of 0.15 wt% or less and more than 0 wt% .
- the range of weight ratios of iron, copper, manganese, magnesium, zinc, and titanium can also be interpreted as in the above-described silicon.
- the above-described second base film 210 containing more than 99 wt% of aluminum has a shape so as to stably maintain a tightly pulled state without stretching between the processes of the semiconductor package 400 and at the same time respond to the topology of the bottom surface of the semiconductor package 400. It may be deformed, and may have a tensile strength of at least 6 kgf/mm 2 or more and an elongation of at least 8% so as to independently maintain the deformed shape between processes. More specifically, the second base film 210 containing 99 wt% or more of aluminum may have a tensile strength in the range of 6 kgf/mm 2 to 12 kgf/mm 2 , and an elongation in the range of 8% to 16%. I can.
- the tensile strength of the second base film 210 is determined by the Korean Industrial Standard KS B 0801 No. It may be measured based on 5, and the annual room rate may be measured based on Korean Industrial Standard KS B 0802.
- the second base film 210 may include 99 wt% or more of copper (Cu).
- the second base film 210 may include 99 wt% or more of copper, as well as an additive of 1 wt% or less to control properties of the second base film 210, such as tensile strength and elongation.
- the additive may include any one or two or more selected from the group consisting of silicon (Si), iron (Fe), manganese (Mn), magnesium (Mg), zinc (Zn), and titanium (Ti). More specifically, the second base film 210 may include 99.9 wt% or more of aluminum and 0.1 wt% or less of zinc.
- 99.9 wt% or more of aluminum may refer to a weight ratio of 99.9 wt% or more and less than 100 wt%
- 0.1 wt% or less of zinc may refer to a weight ratio of 0.1 wt% or less and more than 0 wt%.
- the second base film 210 containing 99 wt% or more of copper described above stably maintains a tightly pulled state without stretching between the processes of the semiconductor package 400 and has a shape corresponding to the bottom topology of the semiconductor package 400. It may be deformed, and may have a tensile strength of at least 10 kgf/mm 2 or more and an elongation of at least 4% so as to independently maintain the deformed shape between processes. More specifically, the second base film 210 containing 99 wt% or more of copper may have a tensile strength in the range of 10 kgf/mm 2 to 26 kgf/mm 2 , and an elongation in the range of 4% to 12%. I can.
- the tensile strength of the second base film 210 is determined by the Korean Industrial Standard KS B 0801 No. It may be measured based on 5, and the annual room rate may be measured based on Korean Industrial Standard KS B 0802.
- the second base film 210 may have a surface tension in the range of 56 Dyne/cm to 72 Dyne/cm, and may have a surface roughness in the range of 0.3 ⁇ m to 0.4 ⁇ m.
- the surface tension is less than 56 Dyne/cm, the adhesion between the first adhesive layer 120 and the second adhesive layer 220 and the second base film 210 may be reduced, and the target of the second adhesive layer 220 It can be difficult to achieve the thickness.
- 72 Dyne/cm it may be difficult to form the second adhesive layer 220 having a uniform thickness.
- the adhesion between the first adhesive layer 120 and the second adhesive layer 220 and the second base film 210 may decrease, and when the surface roughness exceeds 0.4 ⁇ m, the second base film It is possible to reduce the tensile strength and elongation of (210).
- the tensile strength, elongation and surface tension of the second base film 210 are determined by the composition of the material constituting the second base film 210, that is, 99 wt% or more of metal elements and 1 wt% or less of additive content (or weight ratio). Can be controlled by adjusting.
- the second base film 210 may have a thickness in the range of 10 ⁇ m to 35 ⁇ m.
- the thickness of the second base film 210 is less than 10 ⁇ m, it may be very difficult for the user to handle the adhesive tape 10, whereas, when the thickness of the second base film 210 exceeds 35 ⁇ m, In response to the topology of the bottom surface of the semiconductor package 400 on which the plurality of protruding electrodes 410 are formed, it may be difficult to deform a shape and maintain a stress balance.
- the repulsive force between the semiconductor package 400 and the second adhesive layer 220 increases, so that the semiconductor package 400 It may act as a cause of lowering the adhesion and adhesion between the and the second adhesive layer 220.
- the second base film ( 210) can be reduced in thickness. That is, an inverse relationship may be established between the thickness of the second base film 210 and the size of the protruding electrode 410.
- the thickness of the second base film 210 may increase within a set thickness range. That is, a proportional relationship may be established between the thickness of the second base film 210 and the spacing between the adjacent protruding electrodes 410.
- the second base film 210 can independently deform and maintain the deformed shape, the thickness is adjusted in response to the change in size and spacing of the protruding electrode 410 together with the second adhesive layer 220. Stress characteristics, adhesive characteristics, and retention characteristics of the adhesive tape 10 for the semiconductor package 400 manufacturing process may be more effectively improved.
- the second base film 210 since the second base film 210 includes a plurality of metal elements, the shape can be changed in response to the topology of the bottom surface of the semiconductor package 400, and the shape modified by the second adhesive layer 220 is maintained between processes. At the same time, the second base film 210 may maintain its own deformed shape. Accordingly, it is possible to further improve the adhesive properties and retention properties of the adhesive tape 10. That is, the second base film 210 plays a role of preventing the second adhesive layer 220 from being pushed out of the protruding electrode 410 between processes, so that the second base film 210 has the adhesive strength of the second adhesive layer 220 Can be supplemented and improved.
- the adhesive force of the second adhesive layer 220 is lower than the normally required adhesive force (e.g., 500 gf/25mm) to facilitate separation of the adhesive tape 10 from the semiconductor package 400 after the predetermined process is completed. Even if set, this can be supplemented through the second base film 210.
- the shape of the base film is changed in response to the topology of the bottom surface of the semiconductor package 400, but this is due to the adhesive layer, and the shape of the polymer material is not independently modified.
- the second base film 210 has a flat shape of a flat plate, or, as shown in Fig. 3b, a plurality of perforations passing through the second base film 210 ( 212) may have a planar shape in the form of a mesh.
- the plurality of perforations 212 are regularly arranged on the second base film 210, and the size of each of the plurality of perforations 212 is the physical property of the second base film 210 required by the adhesive tape 10 For example, it may have a range of 1% to 3% of the size of the protruding electrode 410 so as not to deteriorate the tensile strength and elongation.
- the planar shape of each of the plurality of perforations 212 may have any one shape selected from the group consisting of a triangular or more polygonal, elliptical, or circular shape.
- the second base film 210 includes a plurality of perforations 212
- the first adhesive layer 120 and the second adhesive layer 220 are formed on the second base film 210.
- Direct contact may be made through a plurality of perforations 212.
- the adhesive strength between the first tape 100 and the second tape 200 is improved, and at the same time, the semiconductor package 400 and the adhesive tape are in contact with the lower surface of the semiconductor package 400 and the protruding electrode 410. 10)
- Even if a void occurs between processes it is possible to effectively prevent the void from excessively expanding between processes (especially during processes in a high vacuum environment). This is because continuity of a molecular structure, that is, a spiral network structure, between the first adhesive layer 120 and the second adhesive layer 220 can be provided through the plurality of perforations 212.
- the base film contains a polymer material
- separate surface treatment for the base film is performed because mixing, agitation and adhesion with dissimilar materials are not easy due to the unique chemical stability of the silicone material used as the adhesive layer.
- the second base film 210 contains a plurality of metal elements, it has a high adhesion to the first adhesive layer 120 and the second adhesive layer 220 containing silicon, and does not require a separate surface treatment. . Through this, productivity can be improved and process cost can be reduced.
- the first tape 100 prevents damage to the second tape 200 between processes, facilitates handling of the second tape 200 having a relatively thin thickness, and provides a cushion for the protruding electrode 410
- the first adhesive layer 120 may have a thicker thickness than the second adhesive layer 220 because it performs a role of.
- the adhesive force of the first adhesive layer 120 may be greater than that of the second adhesive layer 220.
- the first adhesive layer 120 has a thickness in the range of 100 ⁇ m to 700 ⁇ m and an adhesive force of at least 500 gf/25mm or more, such as 500 gf/25mm to 2500 gf/25mm so that the protruding electrode 410 can be impregnated therein. It can have a range of adhesion.
- the second adhesive layer 220 may have a thickness in the range of 10 ⁇ m to 50 ⁇ m and an adhesive force in the range of 200 gf/25mm to 300 gf/25mm.
- the thickness of the first adhesive layer 120 is less than 100 ⁇ m, the ability of the adhesive tape 10 to impregnate the protruding electrode 410 to provide a cushion for the protruding electrode 410 between processes may decrease, and 700 ⁇ m If it exceeds, the adhesive ability, sealing ability, and retention property between the lower surface of the semiconductor package 400 and the adhesive tape 10 may be deteriorated. And, when the adhesive force of the first adhesive layer 120 is less than 500 gf/25mm, when the adhesive tape 10 is removed from the semiconductor package, the first tape 100 is peeled off from the second tape 200. Can occur.
- the adhesive force of the first adhesive layer 120 exceeds 2500 gf/25mm, it may be difficult to implement the thickness of the first adhesive layer 120 required by the adhesive tape 10. This is because the adhesive strength of the adhesive layer containing silicon is discontinuously proportional to the thickness of the adhesive layer.
- the adhesive force of the first adhesive layer 120 may mean an initial adhesive force on the bonding surface where the first adhesive layer 120 and the second base film 210 contact each other.
- the first adhesive layer 120 has a thickness in the range of 100 ⁇ m to 700 ⁇ m, and as the size of the protruding electrode 410 increases, the thickness of the first adhesive layer 120 may be reduced within a set thickness range. This is because, as the size of the protruding electrode 410 increases, the surface area of the protruding electrode 410 increases, so that the second tape 200 is particularly applied during the pressing process to attach and adhere the semiconductor package 400 and the adhesive tape 10. This is because the possibility of damage to the second base film 210 made of a thin metal thin film is lowered.
- the first adhesive layer 120 has a thickness in the range of 100 ⁇ m to 700 ⁇ m, and as the distance between the protruding electrodes 410 increases, the thickness of the first adhesive layer 120 may be increased within a set thickness range. This is because, as the distance between the protruding electrodes 410 increases, an external force, that is, a pressure applied when pressing to attach and close the semiconductor package 400 and the adhesive tape 10 must be increased. That is, as the external force applied during pressurization increases, the likelihood of damage to the second tape 200, particularly the second base film 210 made of a thin metal thin film, increases.
- the second adhesive layer 220 may have a thickness in the range of 10 ⁇ m to 50 ⁇ m so that adhesion can be performed without gaps along the bottom topology of the semiconductor package 400 on which the protruding electrode 410 is formed.
- the thickness of the second adhesive layer 220 is less than 10 ⁇ m, it may be difficult to secure the required adhesive force, and when it exceeds 50 ⁇ m, it is difficult to remove the adhesive tape 10 after the process is completed, or The second adhesive layer 220 may be pushed toward the side of the semiconductor package 400 by the pressing pressure, resulting in poor deposition of the EMI shielding layer.
- the second adhesive layer 220 may have a thickness in the range of 10 ⁇ m to 50 ⁇ m, and through this, the stress balance in the second adhesive layer 220 can be maintained to improve adhesive properties and retention properties. It is possible to prevent a gap between the semiconductor package 400 and the adhesive tape 10 in a region where the lower surface of the package 400 and the protruding electrode 410 contact each other.
- the second adhesive layer 220 has a thickness in the range of 10 ⁇ m to 50 ⁇ m, but as the size of the protruding electrode 410 increases, the thickness may increase within a set range, and the distance between the protruding electrodes 410 is As it increases, the thickness may decrease within a set range.
- the second adhesive layer 220 may have an adhesive strength in the range of 200 gf/25mm to 300 gf/25mm in order to secure adhesive properties, retention properties, and separation properties.
- the adhesive force of the second adhesive layer 220 is less than 200 gf/25mm
- the second adhesive layer 220 is formed in a process environment for forming the EMI shielding layer, for example, in a high temperature and high vacuum environment.
- a phenomenon of being pushed out of the plurality of protruding electrodes 410 formed on the lower surface of the package 400 may occur, or gas and particles may penetrate between the adhesive tape 10 and the adhesive surface of the semiconductor package 400 during processes.
- the adhesive tape 10 is removed when the adhesive tape 10 is removed at room temperature and atmospheric pressure after completing the process of forming the EMI shielding layer. Is not easily removed, or an adhesive material may remain on the lower surface of the semiconductor package 400 and the surface of the protruding electrode 410.
- each of the first adhesive layer 120 and the second adhesive layer 220 maintains chemical resistance, heat resistance, and cold resistance, and at the same time, there is no outgassing, soft and non-denatured for impregnation of the protruding electrode 410, and is detachable. It can be made of a silicone material so that the residue is not transferred. Specifically, each of the first adhesive layer 120 and the second adhesive layer 220 containing silicon may have a siloxane bond as a basic skeleton.
- the first adhesive layer 120 and the second adhesive layer 220 have a siloxane bond as a basic skeleton, but adhere to the semiconductor package 400 in a region where the lower surface of the semiconductor package 400 and the protruding electrode 410 contact each other. Even if voids are generated between the tapes 10, the molecular structure may have a spiral network structure to prevent excessive expansion of the voids between processes (especially during processing in a high vacuum environment).
- the first adhesive layer 120 and the second adhesive layer 220 which have a siloxane bond as a basic skeleton, are spiral networks having a wide spacing between molecules depending on the number and type of functional groups bonded to the side chain of the siloxane bond. Since the structure can be implemented, it is possible to prevent excessive expansion of the voids in a high vacuum environment through the space between molecules in addition to the spiral network structure.
- siloxane bond silicon (Si) and oxygen (O) are interconnected, and since the bonding energy between silicon (Si) and oxygen (O) is large, excellent heat resistance and chemical resistance can be secured.
- the siloxane bond has a low glass transition point because it has amorphous properties that make it difficult to form a crystal structure due to its molecular structure, so excellent cold resistance can be secured.
- a pulling force acts between molecules to form a kind of bonding state. Since the attraction between these molecules is small, siloxane bonds can have a low glass transition point.
- the first adhesive layer 120 and the second adhesive layer 220 which have a siloxane bond as a basic skeleton, are difficult to harden, and the viscosity change according to temperature is small, so that stable physical properties can be exhibited over a wide temperature range.
- the first adhesive layer 120 and the second adhesive layer 220 are trimethylated silica (Trimethylated silica).
- a dimethyl siloxane copolymer, and ethylbenzene may be mixed with an adhesive composition including an adhesive subject matter.
- the dimethylsiloxane copolymer may also include a dimethylsiloxane block copolymer.
- trimethylated silica may play a role of controlling adhesion according to the content
- the dimethylsiloxane copolymer may play a role of providing a basic skeleton of a siloxane bond.
- ethylbenzene may play a role of generating an intermediate product to facilitate bonding between trimethylated silica, dimethylsiloxane copolymer, and other additives.
- the first adhesive layer 120 and the second adhesive layer 220 of the adhesive tape 10 may be a single layer composed of any one of the first to sixth adhesive compositions to be described later, or may have a multilayer structure in which two or more are stacked.
- the first adhesive composition may include 0.5 to 1.5 parts by weight of a crosslinker, 0.5 to 1.5 parts by weight of an anchorage additive, and 0.5 to 1.5 parts by weight of a catalyst based on 100 parts by weight of the first adhesive agent. have.
- the first adhesive layer 120 and the second adhesive layer 220 are formed to have a thickness ranging from 100 ⁇ m to 250 ⁇ m and a thickness ranging from 10 ⁇ m to 20 ⁇ m, the first adhesive composition may be used.
- the first adhesive subject is Toluene, Xylene, Ethylbenzene, 1-Ethynylcyclohexanol; CAS No. 78-27-3, trimethylated Silica (Trimethylated silica), siloxane and silicone, di-methyl, vinyl group-terminated (Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No.
- 1-ethynylcyclohexanol may play a role of controlling the curing rate, and toluene and xylene may be used as solvents.
- siloxane and silicone di-methyl, vinyl group-terminated, dimethyl, methylvinylsiloxane, hydroxy, vinyl-terminated, dimethyl, methylvinylsiloxane, dimethylvinyl-terminated and siloxane and silicone, di-methyl,
- the methylvinyl, hydroxy-terminated may be a dimethylsiloxane copolymer.
- toluene is in the range of 20% to 25%
- xylene is in the range of 10% to 20%
- ethylbenzene is in the range of 2.5% to 10%
- 1-ethynylcyclo Hexanol is in the range of 0.1% to 1%
- trimethylated silica is in the range of 30% to 40%
- siloxane and silicone di-methyl, vinyl group-terminated in the range of 10% to 20%, dimethyl , Methylvinylsiloxane, hydroxy, vinyl-terminated in a ratio ranging from 1% to 10%, dimethyl, methylvinylsiloxane, dimethylvinyl-terminated in a proportion ranging from 1% to 10%
- siloxane and silicone di-methyl , Methylvinyl, and hydroxy-terminated may each account for a proportion ranging from 1% to 10%.
- the crosslinking agent reacts with the adhesive subject to control the crosslinking and curing reaction, and may play a role of helping to more easily form a spiral network structure in the adhesive composition.
- a crosslinking mixture in which heptane, siloxane, silicon, and methyl hydrogen (Siloxanes and Silicones, Me hydrogen; CAS No. 63148-57-2) are mixed in a predetermined ratio may be used.
- heptane may occupy a proportion in the range of 0.25% to 1%
- siloxane, silicon, and methyl hydrogen may occupy 99% to 99.75%.
- the anchorage additive may serve to provide adhesion between the silicone and the substrate.
- Anchorage additives include trimethoxy[3-(oxiranylmethoxy)propyl]silane (Silane, trimethoxy[3-(oxiranylmethoxy)propyl]-; CAS No. 2530-83-8), trimethoxy[(3- Siloxanes and Silicones, di-Me, Me vinyl, hydroxy-terminated reaction products with siloxanes and silicones, di-methyl, di-vinyl, and hydroxy-terminated reaction products combined with oxyranylmethoxy) propyl] silane trimethoxy[3-oxiranylmethoxy)propyl]silane; CAS No.
- trimethoxy[3-(oxiranylmethoxy)propyl]silane is in the range of 30% to 40%
- trimethoxy[(3-oxiranylmethoxy)propyl]silane and bound siloxanes and Silicones di-methyl, di-vinyl, hydroxy-terminated reaction products are in the range of 60% to 70%
- methanol is in the range of 1% to 3%
- divinylhexamethylcyclotetrasiloxane is in the range of 1%
- the catalyst may reduce the activation energy of the reaction, thereby helping the reaction, curing, and crosslinking operation to proceed even under low temperature or mild conditions.
- a platinum catalyst can be used.
- platinum 1,3-diethenyl-1,1,3,3-tetramethyldisiloxane complexes (Platinium 1,3-diethenyl-1,1,3,3-tetramethyldisiloxane complexes; CAS No. 68478-92-2), siloxane and silicone, di-methyl, vinyl group-terminated (Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No.
- platinum, 1,3-dietenyl-1,1,3,3-tetramethyldisiloxane complex is in the range of 1% to 10%, siloxane and silicon, di-methyl, vinyl group-terminated Is in the range of 90% to 99%, tetramethyldivinyldisiloxane is in the range of 1% to 10%, siloxane and silicone, di-methyl, hydroxy-terminated is in the range of 1% to 10%, respectively Can occupy.
- the second adhesive composition may include 0.5 to 1.5 parts by weight of a crosslinking agent, 0.5 to 1.5 parts by weight of an anchorage additive, and 0.5 to 1.5 parts by weight of a catalyst based on 100 parts by weight of the second adhesive subject.
- the crosslinking agent, the anchorage additive and the catalyst may be the same as those described above.
- a second adhesive composition may be used.
- the second adhesive subject is xylene, trimethylated silica, ethylbenzene, siloxane and silicone, di-methyl, vinyl group-terminated (Siloxanes and Silicones, di-Me).
- vinyl group-terminated (CAS No. 68083-19-2) may contain a mixture in a predetermined ratio.
- xylene may be used as a solvent
- siloxane and silicone, di-methyl, and vinyl group-terminated may be a dimethylsiloxane copolymer.
- xylene is in the range of 29% to 37%
- trimethylated silica is in the range of 29% to 34%
- ethylbenzene is in the range of 9% to 11%
- siloxane and Silicon di-methyl
- vinyl group-terminated may each account for a proportion ranging from 21% to 24%.
- the third adhesive composition may include 0.5 to 1.5 parts by weight of a crosslinking agent, 0.5 to 1.5 parts by weight of an anchorage additive, and 0.8 to 1.8 parts by weight of a catalyst based on 100 parts by weight of the second adhesive agent.
- the crosslinking agent, the anchorage additive and the catalyst may be the same as those described above.
- a third adhesive composition may be used.
- the fourth adhesive composition is 0.5 to 1.5 parts by weight of a crosslinking agent, 0.5 to 1.5 parts by weight of an anchorage additive, and 100 parts by weight of the third adhesive subject in which the first and second subjects are mixed in a ratio of 95:1 to 99:1. It may contain 0.5 to 1.5 parts by weight of a catalyst.
- the crosslinking agent, the anchorage additive and the catalyst may be the same as those described above.
- the first subject is xylene, trimethylated silica, ethylbenzene, siloxane and silicon, di-methyl, vinyl group-terminated (Siloxanes and Silicones).
- di-Me vinyl group-terminated; CAS No. 68083-19-2) may include a mixture in a predetermined ratio.
- xylene may be used as a solvent
- siloxane and silicone, di-methyl, and vinyl group-terminated may be a dimethylsiloxane copolymer.
- xylene is in the range of 29% to 37%
- trimethylated silica is in the range of 29% to 34%
- ethylbenzene is in the range of 9% to 11%
- siloxane and silicone Di-methyl, vinyl group-terminated may account for a ratio in the range of 21% to 24%, respectively.
- the second topic can play a role in controlling adhesion, and siloxanes and silicones, di-methyl, and vinyl group-terminated (Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083-19-2) and 1-Ethynylcyclohexanol (CAS No. 78-27-3) may be mixed in a predetermined ratio.
- 1-ethynylcyclohexanol may play a role of controlling the curing rate
- siloxane and silicone, di-methyl, and vinyl group-terminated may be a dimethylsiloxane copolymer.
- siloxane and silicone, di-methyl, and vinyl group-terminated in the entire second subject may occupy a ratio in the range of 99% to 99.9%, and 1-ethynylcyclohexanol in the range of 0.1% to 1% It can occupy a percentage of.
- the fifth adhesive composition may include 0.5 to 3 parts by weight of a polymerization initiator based on 100 parts by weight of the fourth adhesive subject in which the third and fourth subjects are mixed in a ratio of 50:50 to 80:20.
- the fifth thickness may be in the range of 20 ⁇ m to 40 ⁇ m.
- a fifth adhesive composition may be used.
- the third subject is the hydroxy-terminated reaction product of xylene, ethylbenzene, toluene, siloxane and silicone, di-methyl, and chlorotrimethylsilane, and hydrochloric acid.
- Isopropyl alcohol and sodium silicate Siloxanes and silicones, di-Me, hydroxy-terminated reaction products with chlorotrimethylsilane, hydrochloric acid, iso-Pr alc. and sodium silicate; CAS No. 68440-70-0
- the hydroxy-terminated reaction product of siloxane and silicone, di-methyl, chlorotrimethylsilane, hydrochloric acid, isopropyl alcohol, and sodium silicate are reaction products in which trimethylated silica and dimethylsiloxane copolymer are bonded in a crosslinked form. I can.
- xylene is in the range of 30% to 40%
- ethylbenzene is in the range of 2.5% to 10%
- toluene is in the range of 0.1% to 0.25%
- siloxane and silicone di- Hydroxy-terminated reaction products of methyl and chlorotrimethylsilane, hydrochloric acid, isopropyl alcohol, and sodium silicate may each occupy a proportion in the range of 50% to 60%.
- the fourth topic can play a role in controlling adhesion, and toluene, siloxane and silicone, di-methyl, and hydroxy-terminated (Siloxanes and Silicones, di-Me, hydroxy-terminated) ; CAS No. 70131-67-8), xylene, trimethylated silica, and ethylbenzene may be mixed in a predetermined ratio.
- toluene and xylene may be used as a solvent
- siloxane and silicone, di-methyl, and hydroxy-terminated may be a dimethylsiloxane copolymer.
- toluene is in the range of 70% to 80%
- siloxane and silicone di-methyl, hydroxy-terminated in the range of 10% to 20%
- xylene is in the range of 1% to 10 % Range
- trimethylated silica may occupy a ratio of 1% to 10%
- ethylbenzene may occupy a ratio of 0.25% to 1%, respectively.
- the polymerization initiator refers to a substance that causes a chain polymerization reaction, and benzoyl peroxide may be used.
- the sixth adhesive composition may include 0.5 to 3 parts by weight of a polymerization initiator based on 100 parts by weight of the fifth adhesive subject in which the third and fifth subjects are mixed in a ratio of 50:50 to 80:20.
- Benzoyl peroxide may be used as the polymerization initiator.
- the sixth adhesive composition may be used.
- the third topic is the hydroxy-terminated reaction product of xylene, ethylbenzene, toluene, siloxane and silicone, di-methyl, and chlorotrimethylsilane, hydrochloric acid.
- Isopropyl alcohol and sodium silicate Siloxanes and silicones, di-Me, hydroxy-terminated reaction products with chlorotrimethylsilane, hydrochloric acid, iso-Pr alc. and sodium silicate
- the hydroxy-terminated reaction product of siloxane and silicone, di-methyl, chlorotrimethylsilane, hydrochloric acid, isopropyl alcohol, and sodium silicate are reaction products in which trimethylated silica and dimethylsiloxane copolymer are bonded in a crosslinked form. I can.
- xylene is in the range of 30% to 40%
- ethylbenzene is in the range of 2.5% to 10%
- toluene is in the range of 0.1% to 0.25%
- siloxane and silicone di- Hydroxy-terminated reaction products of methyl and chlorotrimethylsilane, hydrochloric acid, isopropyl alcohol, and sodium silicate may each occupy a proportion in the range of 50% to 60%.
- the fifth topic can play a role in controlling adhesion, and toluene, siloxane and silicone, di-methyl, methyl vinyl, vinyl group-terminated (Siloxanes and Silicones, di-Me, Me vinyl, vinyl groupterminated; CAS No.68083-18-1), xylene, trimethylated silica, ethylbenzene, siloxane and silicone, di-methyl, methylvinyl, hydroxy -Terminated (Siloxanes and Silicones, di-Me, Me vinyl, hydroxy-terminated; CAS No. 67923-19-7) and 1-Ethynylcyclohexanol; CAS No.
- siloxane and silicone di-methyl, methylvinyl, vinyl group-terminated and siloxane and silicone, di-methyl, methylvinyl, and hydroxy-terminated may be a dimethylsiloxane copolymer.
- toluene is in a proportion ranging from 47% to 63%, siloxane and silicone, di-methyl, methylvinyl, vinyl group-terminated in a proportion ranging from 21% to 31%, xylene in a proportion ranging from 2.3% to 3.1%
- the ratio of, trimethylated silica is in the range of 10% to 14%
- ethylbenzene is in the range of 0.44% to 0.6%
- siloxane and silicone di-methyl, methylvinyl, hydroxy-terminated is 2.2% to 3 % Range
- 1-ethynylcyclohexanol may occupy a proportion of 0.14% to 0.18%, respectively.
- the adhesive tape 10 for the manufacturing process of the semiconductor package 400 according to the first embodiment includes the first base film 110, the first adhesive layer 120, the second base film 210, and the second base film. Since the adhesive layer 220 has a very simple structure in which the adhesive layer 220 is sequentially stacked, productivity and price competitiveness can be improved.
- the first base film 110 includes a single layer selected from the group consisting of polyethylene terephthalate (PET), polyimide (PI), and polyolefin (PO), or a multilayer in which two or more are stacked, EMI shielding It is possible to easily secure the stress characteristics required in the adhesive tape 10 for manufacturing the semiconductor package 400 used in the layer forming process.
- PET polyethylene terephthalate
- PI polyimide
- PO polyolefin
- the first base film 110 including a polymer material is made of a polymer material
- the first adhesive layer is subjected to surface treatment on one surface of the first base film 110 in contact with the first adhesive layer 120. Even if a silicone material is used as 120, the adhesion between them can be improved.
- the second base film 210 is the semiconductor package 400
- its shape is deformed to correspond to the topology, and it is used in the EMI shielding layer formation process because it contains metal elements to independently maintain the deformed shape between processes. It is possible to easily secure adhesive properties and retention properties required in the adhesive tape 10 for the manufacturing process of the semiconductor package 400 to be used.
- the first base film 110 contains the same metal element as the second base film 210, the above-described adhesive properties and retention properties can be more easily secured.
- the stress balance corresponds to the bottom topology of the semiconductor package 400 in which a plurality of protruding electrodes 410 are formed. Can be maintained effectively.
- each of the first adhesive layer 120 and the second adhesive layer 220 contains an adhesive topic in which trimethylated silica, dimethylsiloxane copolymer, and ethylbenzene are mixed, physical properties are modified by heat generated during the process of forming the EMI shielding layer. There is no adhesive property, retention property, separation property, and stress property required in the adhesive tape 10 for the semiconductor package 400 manufacturing process can be easily secured.
- each of the first adhesive layer 120 and the second adhesive layer 220 has a helical network structure with a siloxane bond as a basic skeleton, the semiconductor package in a region where the lower surface of the semiconductor package 400 and the protruding electrode 410 contact each other. Even if a void occurs between the 400) and the adhesive tape 10, it is possible to prevent the void from excessively expanding between processes (especially during a process in a high vacuum environment).
- the second adhesive layer 220 has a very thin thickness in the range of 10 ⁇ m to 50 ⁇ m, it is easy to adhere and adhere according to the topology of the bottom surface of the semiconductor package 400 in which a plurality of protruding electrodes 410 are formed. It is possible to prevent a phenomenon in which the second adhesive layer 220 is pushed up toward the edge side of the semiconductor package 400.
- each of the first adhesive layer 120 and the second adhesive layer 220 and the first base film 110 and the second base film optimized to correspond to the size and spacing of the protruding electrode 410 of the semiconductor package 400 (210) By providing each thickness, it is possible to more effectively secure the adhesive properties, retention properties, separation properties, and stress properties required in the adhesive tape 10 for the manufacturing process of the semiconductor package 400 used in the process of forming the EMI shielding layer. I can.
- the size of the protruding electrode 410 is larger than the size of the protruding electrode 410 so that the plurality of protruding electrodes 410 are impregnated on the semiconductor wafer on which the plurality of protruding electrodes 410 are formed.
- UV irradiation is performed to control the adhesion of the UV curing tape.
- sawing is performed on the UV curing tape as well as the semiconductor wafer to separate each individual die, that is, the semiconductor package 400.
- each individual semiconductor package 400 separated from the dicing tape is approximately 2 mm apart so that the UV curing tape contacts the adhesive surface of the heat-resistant tape.
- pre-baking is performed to remove impurities remaining in the UV curing tape.
- the impurity refers to a material outgassed from the UV curing tape in a process environment for subsequent EMI shielding layer deposition, that is, a high temperature and high vacuum environment, because the UV curing tape is composed of acrylic polymer as a basis.
- Prebaking is a process for removing these impurities in advance. Subsequently, after the EMI shielding layer deposition process, that is, sputtering process, is performed while the semiconductor package 400 is attached to the heat-resistant tape, a plurality of protruding electrodes 410 are formed using a vacuum chuck or a lift pin provided in an automated facility. A series of processes of removing the UV curing tape and heat-resistant tape attached to the lower surface of the formed semiconductor package 400 are performed.
- the opposite surface of the semiconductor wafer having a plurality of protruding electrodes 410 formed on one surface that is, .
- sawing is performed only on the semiconductor wafer to separate each individual die, that is, the semiconductor package 400.
- each individual semiconductor package separated from the dicing tape so that the protruding electrode 410 is in contact with the adhesive surface of the adhesive tape 10 ( 400) is attached at approximately 2mm intervals.
- a plurality of protruding electrodes A series of process steps for removing the adhesive tape 10 attached to the lower surface of the semiconductor package 400 on which the 410 is formed is performed.
- the process of forming the EMI shielding layer of the semiconductor package 400 using the adhesive tape 10 according to the first embodiment of the present invention does not require a conventional UV curing tape, thus reducing consumption of consumables.
- the process step can be reduced.
- FIG. 4 is a schematic cross-sectional view of an adhesive tape for a semiconductor package manufacturing process according to a second embodiment of the present invention.
- the same reference numerals are used for the same configurations as those of the first embodiment, and detailed descriptions will be omitted.
- the adhesive tape 20 for the semiconductor package 400 manufacturing process according to the second embodiment of the present invention includes a first base film 110, a first intermediate layer 130, and a first adhesive layer ( 120), the second base film 210, the second intermediate layer 230, the second adhesive layer 220, and the release film 300 may be sequentially stacked.
- the first base film 110, the first adhesive layer 120, the second base film 210, the second adhesive layer 220 and the release film 300 are the same configuration as in the first embodiment, A detailed description will be omitted.
- the base film to be described later may refer to both the first base film 110 and the second base film 210
- the adhesive layer may refer to both the first adhesive layer 120 and the second adhesive layer 220. .
- Each of the first intermediate layer 130 and the second intermediate layer 230 is an intermediate material inserted between the base film made of a different material and the adhesive layer, and may serve to improve adhesion between the base film and the adhesive layer. Accordingly, each of the first intermediate layer 130 and the second intermediate layer 230 may use an adhesive composition having excellent physical and chemical bonding strength with both a base film including a polymer material or a metal material, and an adhesive layer containing silicon.
- the adhesive composition used for each of the first intermediate layer 130 and the second intermediate layer 230 may have a molecular structure similar to the first adhesive layer 120 and the second adhesive layer 220 and have a spiral network structure, It may contain silicone. More specifically, the adhesive composition used for each of the first intermediate layer 130 and the second intermediate layer 230 is toluene, siloxane and silicon, di-methyl, hydroxy-terminated (Siloxanes and Silicones, di-Me). , hydroxy-terminated; CAS No. 70131-67-8), xylene, trimethylated silica, and ethylbenzene may be mixed with a primer mixture.
- toluene is in the range of 70% to 80%
- siloxane and silicone di-methyl, hydroxy-terminated in the range of 10% to 20%
- xylene is in the range of 1% to 2.5%.
- the ratio, trimethylated silica may occupy a ratio in the range of 1% to 10%
- ethylbenzene may occupy a ratio in the range of 0.25% to 1%, respectively.
- Each of the first intermediate layer 130 and the second intermediate layer 230 may have a basis weight in the range of 0.2 g/m 2 to 0.5 g/m 2 on the base film.
- the basis weight of each of the first intermediate layer 130 and the second intermediate layer 230 is less than 0.2 g/m 2 , it may not be able to provide sufficient adhesive strength to each of the base film and the adhesive layer, and when it exceeds 0.5 g/m 2
- the adhesive tape 20 is removed, a defect in which the base film and the adhesive layer are separated based on the first intermediate layer 130 and the second intermediate layer 230 may occur.
- the adhesive tape 20 according to the second embodiment of the present invention further includes the first intermediate layer 130 and the second intermediate layer 230, so that even if a silicone material is used as the adhesive layer, the base film and the adhesive layer are It can further improve the adhesion of.
- FIG. 5 is a flow chart illustrating a manufacturing process of an adhesive tape for a semiconductor package manufacturing process according to an embodiment of the present invention
- FIG. 6 is a first tape and a second tape in the adhesive tape for a semiconductor package manufacturing process according to an embodiment of the present invention. It is a flow chart for explaining the manufacturing process of the tape.
- FIG. 1 For convenience of description, an example of a method of manufacturing the adhesive tape according to the first embodiment shown in FIG. 1 will be described. Therefore, the same reference numerals are used for the same configurations as those of the first embodiment, and detailed descriptions will be omitted.
- a first base film 110, a first adhesive layer 120, and a first release film are sequentially stacked to produce a first tape 100.
- the first base film 110 may include a polymer material or a metal material.
- the first base film 110 may have a thickness in the range of 10 ⁇ m to 150 ⁇ m, and one surface in contact with the first adhesive layer 120 is surface-treated. I can.
- the first base film 110 may have a thickness in the range of 10 ⁇ m to 35 ⁇ m.
- PET polyethylene terephthalate
- PI polyimide
- PO polyolefin
- Al aluminum
- Cu copper
- the first adhesive layer 120 may be made of a silicon material, and the molecular structure may have a spiral network structure.
- the first adhesive layer 120 may have a thickness ranging from 80 ⁇ m to 120 ⁇ m and an adhesive strength ranging from 500 gf/25mm to 1500 gf/25mm.
- the first adhesive layer 120 may include an adhesive subject in which trimethylated silica, a dimethyl siloxane copolymer, and ethylbenzene are mixed.
- the first adhesive layer 120 may be a single layer composed of any one of the first to sixth adhesive compositions described above, or may have a multilayer structure in which two or more are stacked.
- the first release film 300 may contain fluorine, and may have an adhesive strength in the range of 3 gf/25mm to 8 gf/25mm.
- a second base film 210, a second adhesive layer 220, and a second release film 300 are sequentially stacked to prepare a second tape 200.
- the second base film 210 may include a metal material and may have a thickness in the range of 10 ⁇ m to 35 ⁇ m.
- a metal material a metal film containing 99 wt% or more of aluminum (Al) or copper (Cu) may be used.
- the second adhesive layer 220 may be made of a silicon material, and a molecular structure may have a spiral network structure.
- the second adhesive layer 220 may have a thickness in the range of 10 ⁇ m to 50 ⁇ m and an adhesive force in the range of 200 gf/25mm to 300 gf/25mm.
- the second adhesive layer 220 may include an adhesive subject in which trimethylated silica, a dimethyl siloxane copolymer, and ethylbenzene are mixed.
- the second adhesive layer 220 may be a single layer composed of any one of the first to sixth adhesive compositions described above, or may have a multilayer structure in which two or more are stacked.
- the second release film 300 may contain fluorine, and may have an adhesive strength in the range of 3 gf/25mm to 8 gf/25mm.
- first tape 100 and the second tape 200 may be manufactured through separate processes. A method of manufacturing the first tape 100 and the second tape 200 will be described later with reference to FIG. 6.
- the first adhesive layer 120 and the second base film 210 are laminated so that they are in contact with each other.
- the adhesive tape 10 is prepared.
- a subsequent process for example, a process of forming an EMI shielding layer, may be performed using the adhesive tape 10 manufactured at the site where the semiconductor package 400 manufacturing process is performed.
- the first tape 100 and the second tape 200 are manufactured through individual processes, and the first tape 100 and the first tape 100 and the second tape are manufactured at the site where the semiconductor package 400 manufacturing process is performed.
- the adhesive tape 10 is Damage can be prevented at the source, and the yield can be improved as the process proceeds using the high-quality adhesive tape 10.
- the first tape 100 and the second tape 200 will be described in detail with reference to FIG. 6.
- the first tape 100 may be manufactured by the same method as the method of manufacturing the second tape 200 to be described later.
- a second base film 210 is prepared.
- the second base film 210 may contain 99 wt% or more of aluminum or copper.
- the second base film 210 may have a thickness in the range of 10 ⁇ m to 35 ⁇ m.
- an adhesive composition for forming the second adhesive layer 220 is prepared.
- the adhesive composition may be formed by injecting and mixing predetermined substances in a mixing container at a predetermined ratio. For example, 0.5 to 1.5 parts by weight of a crosslinking agent, 0.5 to 1.5 parts by weight of an anchorage additive based on 100 parts by weight of an adhesive agent in which trimethylated silica, dimethyl siloxane copolymer, and ethylbenzene are mixed.
- An adhesive composition may be prepared by mixing parts and 0.5 to 1.8 parts by weight of a catalyst.
- the prepared adhesive composition is stabilized. Stabilization of the adhesive composition is to induce chemical stability and even polymerization reaction of the adhesive composition while removing air bubbles in the adhesive composition.
- the adhesive composition prepared for 4 to 12 hours for stabilization of the adhesive composition may be rested in a thermal equilibrium state.
- ultrasonic treatment or vacuum suction is performed to remove air bubbles in the adhesive composition, but since the adhesive composition according to the embodiment of the present invention contains a silicone component, in order to secure chemical stability and prevent rapid polymerization reaction It is preferable to proceed in thermal equilibrium.
- the thermal equilibrium state may refer to a stabilized state in which no external stimulus or external force acts.
- a second adhesive layer 220 is formed by applying a stabilized adhesive composition on the second base film 210 using a comma coater.
- the comma coater may apply the adhesive composition to the second base film 210 to be thicker than the target thickness (ie, the final thickness) of the second adhesive layer 220.
- the comma coater may apply the adhesive composition to a thickness of 2.5 to 3.5 times greater than the target thickness of the second adhesive layer 220.
- the target thickness of the second adhesive layer 220 is 30 ⁇ m
- the comma coater may apply the adhesive composition to have a thickness in the range of 75 ⁇ m to 105 ⁇ m.
- the thickness of the second adhesive layer 220 may gradually decrease during a subsequent drying heat treatment and curing process to reach a target thickness.
- the second adhesive layer 220 may be formed through a spin coating method or a spray method.
- the first drying heat treatment is for removing the solvent in the adhesive composition and activating the polymerization reaction at the same time, and may be performed using an infrared lamp, and may be performed at a temperature in the range of 60°C to 80°C for 3 to 6 minutes.
- a second dry heat treatment is performed on the second adhesive layer 220 following the first dry heat treatment.
- the secondary drying heat treatment is for activating the polymerization reaction while removing the solvent in the adhesive composition, like the first drying heat treatment, and can be performed using an infrared lamp.
- the second dry heat treatment may be performed at a higher temperature than the first dry heat treatment, and may be performed for the same time as the first dry heat treatment.
- the secondary drying heat treatment may be performed for 3 minutes to 6 minutes at a temperature in the range of 160°C to 180°C.
- a third dry heat treatment is performed on the second adhesive layer 220 following the second dry heat treatment.
- the third dry heat treatment is also for activating the polymerization reaction while removing the solvent in the adhesive composition, like the first and second dry heat treatments, and can be performed using an infrared lamp.
- the third dry heat treatment may be performed at a higher temperature than the second dry heat treatment, and may be performed for a longer time than the second dry heat treatment.
- the third drying heat treatment may be performed at a temperature in the range of 190°C to 210°C for 9 to 18 minutes.
- the second adhesive layer 220 is cured and stabilized at room temperature for 12 to 24 hours. That is, the polymerization reaction in the second adhesive layer 220 is stably finished through a pause that slowly cools the second base film 210 and the second adhesive layer 220 heated to room temperature during the first to third dry heat treatment process. At the same time, the second adhesive layer 220 may be cured to have a required hardness.
- drying the second adhesive layer 220 while increasing the temperature step by step in the first to third drying heat treatment process is to prevent the second adhesive layer 220 from drying and curing from the surface. Air bubbles in the adhesive layer 220 can be easily removed.
- the temperature is gradually reduced to room temperature, thereby implementing the second adhesive layer 220 having a more stable state and even thickness.
- the second adhesive layer 220 may have a target thickness.
- the release film 300 may contain fluorine to facilitate protection and separation of the second adhesive layer 220 containing silicon, and may have an adhesive strength in the range of 3 gf/25mm to 8 gf/25mm.
- the second tape 200 may be completed through the above-described process process.
- the first tape 100 may be manufactured in the same manner as the method for manufacturing the second tape 200.
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Abstract
Description
Claims (20)
- 복수의 돌출전극이 형성된 반도체 패키지의 하면에 부착되는 반도체 패키지 제조공정용 접착 테이프에 있어서,제1기저필름의 상에 형성된 제1접착층;상기 제1접착층 상에 형성되며, 상기 반도체 패키지 하면 부착시 상기 반도체 패키지의 하면 토폴로지에 대응하도록 형태가 변형되고, 공정간 변형된 형태를 독자적으로 유지하도록 금속원소가 함유된 제2기저필름; 및상기 제2기저필름 상에 형성되고, 상기 제1접착층보다 얇은 두께를 가지며, 상기 제1접착층의 접착력보다 작은 접착력을 갖는 제2접착층을 포함하고,상기 제1접착층 및 상기 제2접착층 각각은 분자구조가 나선형 망상구조를 갖고, 실리콘이 함유된 제1접착조성물을 포함하는 접착 테이프.
- 제1항에 있어서,상기 제2접착층 상에 부착되고, 불소가 함유된 이형필름을 더 포함하고,상기 이형필름은 3 gf/25mm 내지 8 gf/25mm 범위의 접착력을 갖는 접착 테이프.
- 제1항에 있어서,상기 제1기저필름과 상기 제1접착층 사이에 삽입된 제1중간층; 및상기 제2기저필름과 상기 제2접착층 사이에 삽입된 제2중간층을 더 포함하고,상기 제1중간층 및 상기 제2중간층 각각은 분자구조가 나선형 망상구조를 갖고, 실리콘이 함유된 제2접착조성물을 포함하며, 0.2 g/m2 내지 0.5 g/m2 범위의 평량을 갖는 접착 테이프.
- 제3항에 있어서,상기 제2접착조성물은 톨루엔(Toluene), 실록산과 실리콘, 디-메틸, 하이드록시-말단화(Siloxanes and Silicones, di-Me, hydroxy-terminated; CAS No. 70131-67-8), 자일렌(Xylene), 트리메틸레이티드 실리카(Trimethylated silica) 및 에틸벤젠(Ethylbenzene)이 혼합된 것을 포함하는 접착 테이프.
- 제1항에 있어서,상기 제1기저필름은 폴리에틸렌테레프탈레이트(PET), 폴리이미드(PI) 및 폴리올레핀(PO)으로 이루어진 그룹으로부터 선택된 어느 하나의 단일층 또는 둘 이상이 적층된 다층 구조를 갖고, 10㎛ 내지 150㎛ 범위의 두께를 갖는 접착 테이프.
- 제5항에 있어서,상기 제1기저필름은 상기 제1접착층과 접하는 표면이 코로나 방전 처리법 또는 이온 보조 반응법을 이용하여 표면처리된 접착 테이프.
- 제1항에 있어서,상기 제1기저필름은 상기 반도체 패키지 하면 부착시 상기 반도체 패키지의 하면 토폴로지에 대응하도록 형태가 변형되고, 공정간 변형된 형태를 독자적으로 유지하도록 금속원소가 함유된 것을 포함하는 접착 테이프.
- 제7항에 있어서,상기 제1기저필름 및 상기 제2기저필름 각각은 적어도 99 wt% 이상의 알루미늄(Al)을 포함하고, 상기 알루미늄이 함유된 제1기저필름 및 제2기저필름 각각은 6 kgf/mm2 내지 12 kgf/mm2 범위의 인장강도 및 8% 내지 16% 범위의 연신율을 가지며, 10㎛ 내지 35㎛ 범위의 두께를 갖는 접착 테이프.
- 제7항에 있어서,상기 제1기저필름 및 상기 제2기저필름 각각은 적어도 99 wt% 이상의 구리(Cu)를 포함하고, 상기 구리가 함유된 제1기저필름 및 제2기저필름 각각은 10 kgf/mm2 내지 26 kgf/mm2 범위의 인장강도 및 4% 내지 12% 범위의 연신율을 가지며, 10㎛ 내지 35㎛ 범위의 두께를 갖는 접착 테이프.
- 제1항에 있어서,상기 제2기저필름은 10㎛ 내지 35㎛ 범위의 두께를 갖되, 상기 돌출전극의 사이즈가 증가할수록 설정된 두께 범위내에서 상기 제2기저필름의 두께가 감소하고, 상기 돌출전극 사이의 간격이 증가할수록 설정된 두께 범위내에서 상기 제2기저필름의 두께가 증가하는 접착 테이프.
- 제1항에 있어서,상기 제2기저필름에서 규칙적으로 배열되고, 상기 제2기저필름을 관통하는 복수의 타공을 포함하며, 상기 복수의 타공 각각은 삼각형 이상의 다각형, 타원형 또는 원형으로 이루어진 그룹으로부터 선택된 어느 하나의 평면형상을 갖고, 상기 복수의 타공을 통해 상기 제1접착층과 상기 제2접착층이 다이렉트 컨택되는 접착 테이프.
- 제1항에 있어서,상기 제1접착층은 100㎛ 내지 700㎛ 범위의 두께 및 적어도 500 gf/25mm 이상의 접착력을 갖고,상기 제2접착층은 10㎛ 내지 50㎛ 범위의 두께 및 200 gf/25mm 내지 300 gf/25mm 범위의 접착력을 갖는 접착 테이프.
- 제1항에 있어서,상기 제1접착층은 100㎛ 내지 700㎛ 범위의 두께를 갖되, 상기 돌출전극의 사이즈가 증가할수록 설정된 두께 범위내에서 상기 제1접착층의 두께가 감소하고, 상기 돌출전극 사이의 간격이 증가할수록 설정된 두께 범위내에서 상기 제1접착층의 두께가 증가하며,상기 제2접착층은 10㎛ 내지 50㎛ 범위의 두께를 갖되, 상기 돌출전극의 사이즈가 증가할수록 설정된 두께 범위내에서 상기 제2접착층의 두께가 증가하고, 상기 돌출전극 사이의 간격이 증가할수록 설정된 두께 범위내에서 상기 제2접착층의 두께가 감소하는 접착 테이프.
- 제1항에 있어서,상기 제1접착조성물은 트리메틸레이티드 실리카(Trimethylated silica), 디메틸실록산 공중합체(Dimethyl Siloxane copolymer) 및 에틸벤젠(Ethylbenzene)이 혼합된 접착주제를 포함하는 접착 테이프.
- 제14항에 있어서,상기 제1접착조성물은 상기 접착주제 100 중량부에 대해 가교제 0.5 내지 1.5 중량부, 앵커리지 첨가제 0.5 내지 1.5 중량부 및 촉매제 0.5 내지 1.8 중량부를 더 포함하고,상기 접착주제는 자일렌(Xylene), 트리메틸레이티드 실리카(Trimethylated silica), 에틸벤젠(Ethylbenzene) 및 실록산과 실리콘, 디-메틸, 비닐기-말단화(Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083-19-2)가 혼합된 혼합물을 포함하는 접착 테이프.
- 제14항에 있어서,상기 제1접착조성물은 제1주제와 제2주제가 95:5 내지 99:1 비율로 혼합된 상기 접착주제 100 중량부에 대해 가교제 0.5 내지 1.5 중량부, 앵커리지 첨가제 0.5 내지 1.5 중량부 및 촉매제 0.5 내지 1.5 중량부를 더 포함하고,상기 제1주제는 자일렌(Xylene), 트리메틸레이티드 실리카(Trimethylated silica), 에틸벤젠(Ethylbenzene) 및 실록산과 실리콘, 디-메틸, 비닐기-말단화(Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083-19-2)가 혼합된 혼합물을 포함하며,상기 제2주제는 실록산과 실리콘, 디-메틸, 비닐기-말단화(Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083-19-2)와 1-에티닐사이클로헥산올(1-Ethynylcyclohexanol; CAS No. 78-27-3)이 혼합된 혼합물을 포함하는 접착 테이프.
- 제15항 또는 제16항에 있어서,상기 가교제는 헵탄(Heptane) 및 실록산과 실리콘, 메틸수소(Siloxanes and Silicones, Me hydrogen; CAS No. 63148-57-2)가 혼합된 혼합물을 포함하고,상기 앵커리지 첨가제는 트라이메톡시[3-(옥시라닐메톡시)프로필]실란(Silane, trimethoxy[3-(oxiranylmethoxy)propyl]-; CAS No. 2530-83-8), 트라이메톡시[(3-옥시란일메톡시)프로필]실레인과 결합한 실록산류와 실리콘류, 디-메틸, 디-비닐, 하이드록시-말단화 반응 생성물(Siloxanes and Silicones, di-Me, Me vinyl, hydroxy-terminated reaction products with trimethoxy[3-oxiranylmethoxy)propyl]silane; CAS No. 102782-94-5), 메탄올(Methanol) 및 디비닐헥사메틸시클로테트라실록산(Divinyl hexamethyl cyclotetrasiloxane; CAS No. 17980-61-9)이 혼합된 혼합물을 포함하며,상기 촉매제는 백금, 1,3-다이에텐일-1,1,3,3-테트라메틸다이실록산 착물(Platinium 1,3-diethenyl-1,1,3,3-tetramethyldisiloxane complexes; CAS No. 68478-92-2), 실록산과 실리콘, 디-메틸, 비닐기-말단화(Siloxanes and Silicones, di-Me, vinyl group-terminated; CAS No. 68083-19-2), 테트라메틸디비닐디실록산(Tetramethyldivinyldisiloxane; CAS No. 2627-95-4) 및 실록산과 실리콘, 디-메틸, 하이드록시-말단화(Siloxanes and Silicones, di-Me, hydroxy-terminated; CAS No. 70131-67-8)가 혼합된 혼합물을 포함하는 접착 테이프.
- 제14항에 있어서,상기 제1접착조성물은 제3주제와 제4주제가 50:50 내지 80:20 비율로 혼합된 상기 접착주제 100 중량부에 대해 중합개시제 0.5 내지 3 중량부를 더 포함하고,상기 제3주제는 자일렌(Xylene), 에틸벤젠(Ethylbenzene), 톨루엔(Toluene) 및 실록산과 실리콘, 디-메틸, 클로로트리메틸실란의 하이드록시-말단화 반응 생성물, 염산, 이소프로필알콜과 소듐 실리케이트(Siloxanes and silicones, di-Me, hydroxy-terminated reaction products with chlorotrimethylsilane, hydrochloric acid, iso-Pr alc. and sodium silicate; CAS No. 68440-70-0)가 혼합된 혼합물을 포함하며,상기 제4주제는 톨루엔(Toluene), 실록산과 실리콘, 디-메틸, 하이드록시-말단화(Siloxanes and Silicones, di-Me, hydroxy-terminated; CAS No. 70131-67-8), 자일렌(Xylene), 트리메틸레이티드 실리카(Trimethylated silica) 및 에틸벤젠(Ethylbenzene)이 혼합된 혼합물을 포함하고,상기 중합개시제는 과산화벤조일(Benzoyl Peroxide)을 포함하는 접착 테이프.
- 제14항에 있어서,상기 제1접착조성물은 제3주제와 제5주제가 50:50 내지 80:20 비율로 혼합된 상기 접착주제 100 중량부에 대해 중합개시제 0.5 내지 3 중량부를 더 포함하고,상기 제3주제는 자일렌(Xylene), 에틸벤젠(Ethylbenzene), 톨루엔(Toluene) 및 실록산과 실리콘, 디-메틸, 클로로트리메틸실란의 하이드록시-말단화 반응 생성물, 염산, 이소프로필알콜과 소듐 실리케이트(Siloxanes and silicones, di-Me, hydroxy-terminated reaction products with chlorotrimethylsilane, hydrochloric acid, iso-Pr alc. and sodium silicate; CAS No. 68440-70-0)가 혼합된 혼합물을 포함하고,상기 제5주제는 톨루엔(Toluene), 실록산과 실리콘, 디-메틸, 메틸비닐, 비닐기-말단화(Siloxanes and Silicones, di-Me, Me vinyl, vinyl groupterminated; CAS No. 68083-18-1), 자일렌(Xylene), 트리메틸레이티드 실리카(Trimethylated silica), 에틸벤젠(Ethylbenzene), 실록산과 실리콘, 디-메틸, 메틸비닐, 하이드록시-말단화(Siloxanes and Silicones, di-Me, Me vinyl, hydroxy-terminated; CAS No. 67923-19-7) 및 1-에티닐사이클로헥산올(1-Ethynylcyclohexanol; CAS No. 78-27-3)이 혼합된 혼합물을 포함하며,상기 중합개시제는 과산화벤조일(Benzoyl Peroxide)을 포함하는 접착 테이프.
- 고분자 소재 또는 금속 소재를 포함하는 제1기저필름, 분자구조가 나선형 망상구조를 갖고 실리콘이 함유된 제1접착층 및 불소가 함유된 제1이형필름이 순차적으로 적층된 제1테이프를 제조하는 단계;금속 소재를 포함하는 제2기저필름, 분자구조가 나선형 망상구조를 갖고 실리콘이 함유된 제2접착층 및 불소가 함유된 제2이형필름이 순차적으로 적층된 제2테이프를 제조하는 단계;상기 제1테이프에서 상기 제1이형필름을 제거하는 단계; 및상기 제1접착층과 상기 제2기저필름이 접하도록 상기 제1테이프와 상기 제2테이프를 합지하는 단계를 포함하는 접착 테이프 제조방법.
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