WO1999009592A1 - Assemblage semi-conducteur du type flip et son procede de fabrication - Google Patents
Assemblage semi-conducteur du type flip et son procede de fabrication Download PDFInfo
- Publication number
- WO1999009592A1 WO1999009592A1 PCT/JP1998/003588 JP9803588W WO9909592A1 WO 1999009592 A1 WO1999009592 A1 WO 1999009592A1 JP 9803588 W JP9803588 W JP 9803588W WO 9909592 A1 WO9909592 A1 WO 9909592A1
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- WIPO (PCT)
- Prior art keywords
- chip
- flip
- semiconductor package
- chip semiconductor
- manufacturing
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 90
- 238000004519 manufacturing process Methods 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 33
- 239000011347 resin Substances 0.000 claims abstract description 62
- 229920005989 resin Polymers 0.000 claims abstract description 62
- 238000007789 sealing Methods 0.000 claims description 72
- 238000000227 grinding Methods 0.000 claims description 40
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000011253 protective coating Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 description 29
- 238000007747 plating Methods 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06Â -Â H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
- H01L21/561—Batch processing
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06Â -Â H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
- H01L21/563—Encapsulation of active face of flip-chip device, e.g. underfilling or underencapsulation of flip-chip, encapsulation preform on chip or mounting substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/93—Batch processes
- H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73201—Location after the connecting process on the same surface
- H01L2224/73203—Bump and layer connectors
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/93—Batch processes
- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01004—Beryllium [Be]
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01005—Boron [B]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01006—Carbon [C]
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01029—Copper [Cu]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01033—Arsenic [As]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01039—Yttrium [Y]
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01078—Platinum [Pt]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01082—Lead [Pb]
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/14—Integrated circuits
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
- H01L2924/1815—Shape
- H01L2924/1816—Exposing the passive side of the semiconductor or solid-state body
- H01L2924/18161—Exposing the passive side of the semiconductor or solid-state body of a flip chip
Definitions
- the present invention relates to a small and thin flip-chip semiconductor package in which an IC chip is mounted on a circuit board by flip-chip bonding, and a method of manufacturing the same.
- FIG. 5 and FIG. 6 as an example of a conventional method of manufacturing a CSP flip-chip semiconductor package, a flip-chip BGA (ball 'Dallid' array) in which solder ball electrodes are formed on a circuit board. ) Is outlined below.
- a top view is shown on the right side of the drawing, and AA of the top view is shown on the left side of each top view.
- a cross-sectional view at the cut along the line is shown.
- 5 and 6 show an example in which four circuit boards 1 are taken for convenience.
- circuit board forming process ((A) in FIG. 5), an IC chip mounting process ((B) in FIG. 5), and a resin sealing process ((C in FIG. 5)).
- a reference member attaching step (FIG. 6 (A)
- a dicing step (FIG. 6 (B)
- an electrode forming step (FIG. 6 (C)).
- a through hole (not shown) is formed in the collective circuit board 100 on both sides which is copper-clad.
- a copper plating layer is formed on both surfaces of the collective circuit board 100 by electroless copper plating and electrolytic copper plating. Further, the copper plating layer is laminated with a plating resist, and the plating resist is sequentially exposed and developed to form a pattern mask. Thereafter, the copper plating layer is subjected to pattern etching using an etchant through the pattern mask. By this pattern etching, the collective circuit board
- a plurality of IC connection electrodes (bonding patterns) 3 are arranged on the upper surface of the substrate 100, and an external connection electrode 4 which is a pad electrode arranged in a matrix is formed on the bottom surface.
- a solder resist process is performed to form a resist film on the bottom surface side of the collective circuit board 100.
- the resist film has an opening exposing the external connection electrode 4 which is a solderable region.
- the bottom surface of the integrated circuit substrate 100 becomes flat. In this way, an integrated circuit board 100 having a large number of solderable regions of the same shape arranged in a matrix on the bottom surface is completed (FIG. 5 (A)).
- solder bumps 5 are formed on the pad electrode surfaces of an IC wafer (not shown).
- the method for forming the solder bump 5 include a method such as a stud bump method, a ball bump method and a plating bump method.
- the bump method is effective in reducing the size of an IC chip because bumps can be formed in a narrow arrangement between pad electrodes.
- the IC wafer on which the solder bumps are formed is cut into a predetermined chip size while being adhered to the adhesive tape to form an IC chip 6.
- the IC wafer is cut in the X and Y directions by a full cutting method using a device such as a dicing saw. Then, the individual IC chips 6 on the adhesive tape are divided into single pieces.
- a flux (not shown) is placed on a predetermined position on the solder bumps of the divided IC chip 6 or on the IC connection electrode 3 formed on the upper surface side of the above-mentioned integrated circuit board 100. Is applied. Thereafter, one IC chip 6 is mounted for each circuit board 1 on the main surface of the collective circuit board 100. When placing the IC The surface of the chip 6 on which the solder bumps 5 are formed is opposed to the upper surface of the integrated circuit board 100, and the solder bumps 5 are positioned on the IC connection electrodes 3. Subsequently, solder reflow is performed to electrically connect the IC connection electrode 3 and the IC chip 6 respectively. In this way, the IC chip 6 is mounted (flip chip mounting) on the collective circuit board 100 (FIG. 5, (B)).
- a plurality of IC chips 6 are integrally formed by performing side-botting over a plurality of adjacent IC chips 6 using a thermosetting encapsulating resin 7. Resin sealing. As a result, as shown in FIG. 5 (C), the IC chip 6 is fixed face-down on the individual circuit boards 1 of the collective circuit board 100 in a sealed state.
- the flat bottom surface of the collective circuit board 100 on which the IC chip 6 is mounted is attached to the reference member 8 by a fixing means such as an adhesive or an adhesive tape.
- the assembled circuit board 100 and the reference member 8 are securely fixed because the attachment surfaces are flat to each other (FIG. 6 (A)).
- the collective circuit board 100 is cut along the X- and Y-direction cut lines 2 formed on the collective circuit board 100, respectively. Cutting is performed by first-class cutting means, and the cut circuit board 1 is further divided into individual circuit boards 1.
- a dicing machine âDFD-640 (trade name)â manufactured by Disco Co., Ltd. was used for dicing, and a 0.1 mm wide dicing blade âNBCâ was used as the dicing blade.
- NBC 0.1 mm wide dicing blade
- the adhesive or the like is dissolved with a dissolving solution or the like, and the circuit board 1 is peeled from the reference member 8.
- solder balls are attached to the positions of the external connection electrodes 4 formed on the lower surface side of each circuit board 1. Subsequently, the solder balls are reflowed to form solder ball electrodes 9 as shown in FIG. 6 (C).
- the melting point of the solder ball is set lower than the melting point of the solder bump 5 so that the solder bump 5 is not melted by the reflow when the solder ball electrode 9 is formed. Therefore, the solder bump 5 has a composition of Pb: 90% and Sn: 10% having a melting point of half of 250 ° C.
- Pb 40%, melting point of S n 60% of the composition using a solder 1 80 ° C c:
- FIG. 7 shows a top view of the flip chip BGA10.
- the side surface of the IC chip 6 is sealed with a sealing resin 7 protruding from directly below the IC chip 6.
- the portion of the sealing resin 7 protruding to the side is called a fillet.
- FIG. 8 shows a cross-sectional view taken along a line AA shown in FIG.
- FIG. 9 shows a cross-sectional view taken along a line BB shown in FIG.
- the height of the fillet varies depending on the state of the IC chip 6. The reason is that it is difficult to accurately control the height of the fillet during resin sealing. For this reason, as shown in FIG. 9, a part 7 b of the fillet is usually attached to the upper surface of the IC chip 6. If the fillet adheres to the upper surface of the C chip 6, the thickness of the semiconductor package 10 becomes larger.
- the IC chip is thinned in a wafer state, for example, to a thickness of 0.4 mm, a solder bump for flip chip bonding is attached to the IC chip.
- the wafer is easily broken.
- the wafer is easily broken when the wafer is attached to the dicing tape.
- it has been difficult to reduce the thickness of the IC chip to a certain thickness or less in a wafer state, for example, a thickness of 0.635 mm to 0.4 mm or less. Therefore, it has been difficult to reduce the thickness of the flip-chip semiconductor package to a certain thickness or less, for example, 1 mm or less.
- the fillet adhering to the upper surface of the IC chip it forces s Atsuta which causes lowering of the reliability â fe semiconductor Bakkeji.
- the flip-chip semiconductor package and the method of manufacturing the same provide a thin and highly reliable flip-chip semiconductor package suitable for mounting on a small portable device or the like and a method of manufacturing the same.
- the lower surface of the IC chip is mounted on the main surface of the circuit board by flip-chip bonding, and the gap between the circuit board and the IC chip is formed.
- the height of the upper surface of the IC chip with respect to the main surface of the circuit board and the side of the IC chip protruding from the gap.
- the height of the highest portion of the sealing resin substantially coincides with the height of the sealing resin.
- the upper surface of the IC chip is a ground surface. Therefore, if a fillet is attached to the upper surface of the IC chip, it is removed by grinding. Therefore, the sealing resin does not adhere to the upper surface of the polished IC chip.
- the method of manufacturing a flip chip semiconductor package of the present invention Mounting the lower surface of the IC chip on the main surface of the integrated circuit board, which is divided into multiple circuit boards by flip-chip bonding, and sealing the gap between the integrated circuit board and the IC chip and the side surface of the IC chip
- the method includes a sealing step of sealing with a resin, and a grinding step of grinding the upper surface of the Ic chip after the sealing step.
- the height of the upper surface of the IC chip with respect to the main surface of the circuit board is substantially equal to the height of the highest portion of the sealing resin that seals the side surface of the IC chip. Let it.
- the Ic chip can be made thinner. As a result, the thickness of the flip chip semiconductor package can be reduced.
- the fillet can be removed by grinding to flatten the upper surface of the IC chip.
- dimensional control of the fillet during resin sealing can be eased.
- the upper surface of the IC chip can be flattened, the upper surface of the IC chip can be evenly brought into contact with the planar electrode when measuring the electrical characteristics of the flip-chip semiconductor package. For this reason, accurate measurement of electrical characteristics can be performed, and the reliability of the semiconductor package can be improved.
- the upper surface of each IC chip can be ground at once. As a result, productivity can be improved. Further, the thickness of each IC chip can be made uniform. As a result, the thickness of each flip-chip semiconductor package can be made uniform. In addition, since the grinding is performed in a collective package state, the occurrence of warpage of the flip-chip semiconductor package can be suppressed. Further, it is preferable that the highest part of the sealing resin is a flat surface, and more preferably, the flat surface of the sealing resin surrounds the periphery of the upper surface of the IC chip. Also, it is desirable that the upper surface of the IC chip and the flat surface of the sealing resin are ground surfaces on the same plane.
- a flat surface of the sealing resin can be used as an upper surface of the flip-chip semiconductor package in addition to the upper surface of the IC chip.
- the marking area of the flip-chip semiconductor package can be made wider. Therefore, marking can be easily performed. Also, since the area of the top surface of the package is large, the package can be easily picked up by vacuum suction. In addition, when the knockage is fixed on the upper surface, the package can be more reliably fixed because the fixing area is large.
- Adhesion can be improved as compared with the case where there is a step at the boundary between the upper surface of the substrate and the flat surface of the sealing resin.
- the height of the ground surface with respect to the main surface of the circuit board is desirably higher than the height of the active element surface of the IC chip.
- the function of the Ic chip can be prevented from being adversely affected by the grinding of the upper surface.
- the upper surface of the IC chip and the flat surface of the sealing resin are coated with a protective film.
- the protective film By providing the protective film in this way, the reliability of the semiconductor package can be improved. Further, by providing the protective coating, the stress applied from the sealing resin to the IC chip can be reduced. As a result, it is possible to avoid adverse effects due to stress on the IC chip, for example, damage to the IC chip. Therefore, the reliability of the flip-chip semiconductor package can be improved.
- the protective coating covers the boundary between the upper surface of the Ic chip and the flat surface of the sealing resin. If the boundary line is coated with the protective film, the reliability of the semiconductor package can be further improved. Further, it is preferable that the material of the protective film is different from the material of the sealing resin. Thus, providing a protective film of a material different from the material of the sealing resin provides better adhesion of the protective film to the sealing resin than providing the same material as the sealing resin on the surface of the cured sealing resin. Can be improved.
- FIG. 1 is a cross-sectional view for explaining a method of manufacturing a flip-chip semiconductor package according to a first embodiment of the present invention.
- FIG. 2 is a top view illustrating the structure of the flip-chip semiconductor package according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional view of the cutout along the line CC in FIG.
- FIG. 4 relates to a flip-chip semiconductor package according to a second embodiment of the present invention.
- -It is a sectional view for explaining the structure of the die:
- FIG. 5 are process diagrams for explaining a conventional method of manufacturing a flip chip semiconductor package
- ( â ) is an explanatory diagram of a circuit board forming process
- (B) is FIG. 4 is an explanatory view of an IC mounting step
- (C) is an explanatory view of a resin sealing step.
- a top view is shown on the right side of the drawing, and a cross-sectional view taken along a line AA of the top view is shown on the left side of each top view.
- the illustration of the IC connection electrode 3 and the external connection electrode 4 is omitted.
- FIG. 6 are process drawings following (C) of FIG. 5, (A) is an explanatory diagram of an electrode forming process, and (B) is an explanatory diagram of an attaching process. It is a figure and (C) is explanatory drawing of a cutting process.
- a top view is shown on the right side of the drawing, and a cross-sectional view taken along a line AA of the top view is shown on the left side of each top view.
- the electrodes 3 for IC connection and Illustration of the external connection electrode 4 is omitted.
- â Fig. 7 is a top view of the flip chip semiconductor package.
- FIG. 8 is a cross-sectional view taken along a line AA in FIG.
- FIG. 9 is a cross-sectional view taken along a cut line BB in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the steps up to the sealing step are performed in the same steps as the conventional steps described above. Therefore, description of these steps is omitted.
- the solder ball electrode 9 is formed on the back surface of the collective circuit board 100 in the same manner as in the conventional example.
- FIG. 1 is a cross-sectional view for explaining a grinding step.
- the same components as those in the above-described conventional example are denoted by the same reference numerals.
- FIG. 1 shows a state in which the solder ball electrodes 9 are formed.
- the shape of the ground portion of the IC chip 6 and the sealing tree 7 is indicated by a dashed line.
- the upper surface 6a of the IC chip 6 is ground by a grinding means such as grinding, for example, while keeping the package state.
- a grinding means such as grinding, for example, while keeping the package state.
- the height of the upper surface 6c of the IC chip 6 after the grinding is higher than the height of the active element surface (IC circuit forming surface) (not shown) of the IC chip 6. The reason is I This is to prevent the function of the C chip 6 from being adversely affected by the grinding.
- the thickness of the IC chip 6 becomes from ti to ti as shown in FIG. Then, the thickness t 0 of the semiconductor package 2 0, the thickness ti of the IC chip after grinding, the thickness t 2 of the solder bumps 5, and the thickness t 3 of the circuit board 1, the thickness of the solder ball electrodes 9 is the sum of the t 4.
- T 1 0 by grinding the thickness of the IC chip 6.
- the sealing resin does not adhere to the upper surface 6c of the IC chip 6 after the grinding.
- the upper surface 6c of the IC chip 6 after the grinding is flattened.
- the dimensional control of the fillet can be eased.
- the upper surface of the IC chip can be evenly brought into contact with the planar electrode. For this reason, therefore c can measure the precise electrical characteristics, thereby improving the reliability of the semiconductor package.
- each IC chip 6 can be ground at once, and the thickness of each IC chip 6 can be made uniform. For this reason, productivity can be improved.
- grinding is performed in a state of being sealed with a resin, occurrence of warpage of the IC chip 6 can be suppressed.
- FIG. 2 shows the top surface of the flip chip semiconductor package 20 cut out by dicing.
- FIG. 3 is a cross-sectional view taken along a line C-C in FIG.
- the sealing resin on the side surface of the IC chip 6 is ground simultaneously with the IC chip 6.
- the highest part of the sealing resin 7 becomes the flat surface 7a.
- this flat surface 7a surrounds the periphery of the upper surface 6c of the IC chip 6.
- the upper surface 6c of the IC chip 6 after cutting and the flat surface 7a of the sealing tree 7 are ground surfaces 6b on the same plane. .
- the height of the upper surface 6 c of the IC chip 6 with respect to the main surface 1 a of the circuit board 1 and the flat surface 7 of the highest part of the sealing resin sealing the side surface of the IC chip 6 The height of a is practically the same.
- the flat surface 7a of the sealing resin 7 By forming the flat surface 7a of the sealing resin 7, the flat surface 7a of the sealing resin 7 can be used as the upper surface of the flip chip semiconductor package in addition to the upper surface 6c of the IC chip 6. it can. As a result, the marking area of the flip chip semiconductor package 20 can be made wider. For this reason, marking can be easily performed.
- the contents to be marked include, for example, the package manufacturer name, manufacturing date, and serial number.
- the flip-chip semiconductor package 20 can be easily picked up by vacuum suction.
- the package 20 when the package 20 is fixed on the upper surfaces 6c and 7a, a large fixing area can be secured. Therefore, the package can be fixed more reliably.
- fixing with the upper surfaces 6c and 7a for example, there is a case where dicing is performed while fixing the IC chip 6 side in an assembled package state.
- the upper surface 6c of the IC chip 6 and the flat surface 7a of the sealing resin 7 are coated with the protective cover 12 in the coating step.
- This protective film 12 covers the boundary 11 between the upper surface 6 c of the IC chip 6 and the flat surface 7 a of the sealing resin 7.
- the reliability of the semiconductor package 20a can be improved.
- coating on the boundary 11 prevents the occurrence of a gap between the IC chip 6 and the sealing resin 7 at the boundary 11, thereby improving reliability. It can be further improved.
- the protective film 12 the stress applied from the sealing resin 7 to the IC chip 6 can be reduced. As a result, it is possible to avoid adverse effects due to stress on the IC chip 6, for example, damage to the IC chip. For this reason, the word order i of the flip chip semiconductor package 20a can be improved.
- JCR junction coating range
- marking is performed by shaving the protected layer 12 with a laser beam.
- marking is performed using a laser beam
- the contents of the marking can be changed more easily than when marking is performed by printing.
- the protective coating # 2 is opaque. Therefore, it is possible to improve the contrast between the opaque protective coating 12 and the chipped portion where the upper surface 6 â² of the IC chip 6 is exposed: As a result, the visibility of the marking is improved. Can be up.
- the grinding step is performed before each flip-chip semiconductor package is cut out by dicing.
- the grinding step may be performed after the dicing step.
- the flip-chip semiconductor package according to the present invention and the method for manufacturing the same are provided as a flip-chip semiconductor package mounted on a camera-integrated VTR, a small portable device, or the like and having excellent reliability and productivity and a method for manufacturing the same. It is suitable.
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Wire Bonding (AREA)
Description
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Claims
1 . åè·¯åºæ¿ã®äž»è¡šé¢ã« I Cãããã®äžé¢ãããªããããããã³ãã£ã³ã°ã«ã ãå®è£
ãã 該åè·¯åºæ¿ãšè©² I cããããšã®ç©ºéã«å°æ¢æš¹èã泚å
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1 1 . åæã«ããè€æ°åã®åè·¯åºæ¿ã«åããããéååè·¯åºæ¿ã®äž»è¡šé¢ã« I C ãããã®äžé¢ãããªããããããã³ãã£ã³ã°ã«ããå®è£
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/218529 | 1997-08-13 | ||
JP21852997A JPH1167979A (ja) | 1997-08-13 | 1997-08-13 | ããªãããããåå°äœããã±ãŒãžã®å®è£ æ§é åã³ãã®è£œé æ¹æ³ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999009592A1 true WO1999009592A1 (fr) | 1999-02-25 |
Family
ID=16721362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/003588 WO1999009592A1 (fr) | 1997-08-13 | 1998-08-12 | Assemblage semi-conducteur du type flip et son procede de fabrication |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPH1167979A (ja) |
TW (1) | TW412850B (ja) |
WO (1) | WO1999009592A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1094511A2 (en) * | 1999-10-22 | 2001-04-25 | Lucent Technologies Inc. | Low profile integrated circuit packages |
US6459152B1 (en) * | 1999-10-27 | 2002-10-01 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device having a chip, reinforcing plate, and sealing material sharing a common rear surface |
CN104772574B (zh) * | 2014-01-09 | 2016-09-14 | äžåœç§åŠé¢éå±ç 究æ | äžç§æ è®°äºè¿ç»æåå§æ¶²åºååºçé¢çæ¹æ³ |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1143373C (zh) | 1998-07-01 | 2004-03-24 | 粟工ç±æ®çæ ªåŒäŒç€Ÿ | å富äœè£ 眮åå ¶å¶é æ¹æ³ãçµè·¯åºæ¿åçµåè£ çœ® |
TW569424B (en) | 2000-03-17 | 2004-01-01 | Matsushita Electric Ind Co Ltd | Module with embedded electric elements and the manufacturing method thereof |
JP2001339011A (ja) * | 2000-03-24 | 2001-12-07 | Shinko Electric Ind Co Ltd | åå°äœè£ 眮ããã³ãã®è£œé æ¹æ³ |
JP3929250B2 (ja) | 2001-03-08 | 2007-06-13 | æ ªåŒäŒç€Ÿã«ããµã¹ãã¯ãããž | åå°äœè£ 眮 |
JP4806196B2 (ja) * | 2005-01-11 | 2011-11-02 | ãããœããã¯æ ªåŒäŒç€Ÿ | åå°äœè£ 眮 |
JP5280139B2 (ja) * | 2008-09-19 | 2013-09-04 | ã«ããµã¹ãšã¬ã¯ãããã¯ã¹æ ªåŒäŒç€Ÿ | åå°äœè£ 眮ã®è£œé æ¹æ³åã³å®è£ åºæ¿ |
Citations (4)
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JPS612331A (ja) * | 1984-06-14 | 1986-01-08 | Sharp Corp | åå°äœçŽ åã®æš¹èå°æ¢æ¹åŒ |
JPH0231437A (ja) * | 1988-07-21 | 1990-02-01 | Oki Electric Ind Co Ltd | åå°äœãããã®å®è£ æ¹æ³ |
JPH0438857A (ja) * | 1990-06-04 | 1992-02-10 | Nec Corp | æš¹èå°æ¢ååå°äœè£ 眮 |
JPH08274209A (ja) * | 1995-03-31 | 1996-10-18 | Seiko Epson Corp | ããããã£ãªã€åã³ãã®è£œé æ¹æ³ |
-
1997
- 1997-08-13 JP JP21852997A patent/JPH1167979A/ja active Pending
-
1998
- 1998-08-12 WO PCT/JP1998/003588 patent/WO1999009592A1/ja active Application Filing
- 1998-08-12 TW TW87113237A patent/TW412850B/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS612331A (ja) * | 1984-06-14 | 1986-01-08 | Sharp Corp | åå°äœçŽ åã®æš¹èå°æ¢æ¹åŒ |
JPH0231437A (ja) * | 1988-07-21 | 1990-02-01 | Oki Electric Ind Co Ltd | åå°äœãããã®å®è£ æ¹æ³ |
JPH0438857A (ja) * | 1990-06-04 | 1992-02-10 | Nec Corp | æš¹èå°æ¢ååå°äœè£ 眮 |
JPH08274209A (ja) * | 1995-03-31 | 1996-10-18 | Seiko Epson Corp | ããããã£ãªã€åã³ãã®è£œé æ¹æ³ |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1094511A2 (en) * | 1999-10-22 | 2001-04-25 | Lucent Technologies Inc. | Low profile integrated circuit packages |
EP1094511A3 (en) * | 1999-10-22 | 2005-09-07 | Lucent Technologies Inc. | Low profile integrated circuit packages |
US6459152B1 (en) * | 1999-10-27 | 2002-10-01 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device having a chip, reinforcing plate, and sealing material sharing a common rear surface |
US7094630B2 (en) | 1999-10-27 | 2006-08-22 | Renesas Technology Corp. | Method of fabricating semiconductor device having a chip, reinforcing plate, and sealing material sharing a common rear surface |
CN104772574B (zh) * | 2014-01-09 | 2016-09-14 | äžåœç§åŠé¢éå±ç 究æ | äžç§æ è®°äºè¿ç»æåå§æ¶²åºååºçé¢çæ¹æ³ |
Also Published As
Publication number | Publication date |
---|---|
TW412850B (en) | 2000-11-21 |
JPH1167979A (ja) | 1999-03-09 |
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