WO2022259395A1 - 半導体製造装置および半導体装置の製造方法 - Google Patents
半導体製造装置および半導体装置の製造方法 Download PDFInfo
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- WO2022259395A1 WO2022259395A1 PCT/JP2021/021839 JP2021021839W WO2022259395A1 WO 2022259395 A1 WO2022259395 A1 WO 2022259395A1 JP 2021021839 W JP2021021839 W JP 2021021839W WO 2022259395 A1 WO2022259395 A1 WO 2022259395A1
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- runner
- end side
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- resin
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 56
- 239000011347 resin Substances 0.000 claims abstract description 56
- 238000000465 moulding Methods 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 abstract description 31
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 13
- 238000012986 modification Methods 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 238000001721 transfer moulding Methods 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Images
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 H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
- H01L21/565—Moulds
-
- 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 H01L21/06 - 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49838—Geometry or layout
- H01L23/49844—Geometry or layout for devices being provided for in H01L29/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/07—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00
- H01L25/072—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/18—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
Definitions
- the present disclosure relates to a semiconductor manufacturing apparatus and a method of manufacturing a semiconductor device.
- Power semiconductor elements include, for example, IGBT (Insulated Gate Bipolar Transistor) elements, MOSFET (Metal Oxide Semi-Conductor Field Effect Transistor) elements, bipolar transistor elements, and diode elements.
- IGBT Insulated Gate Bipolar Transistor
- MOSFET Metal Oxide Semi-Conductor Field Effect Transistor
- a semiconductor device equipped with a power semiconductor element is a mold-sealed semiconductor device.
- a semiconductor element is first mounted on a lead frame, then the semiconductor element and the lead frame are joined by wire bonding, and then sealed with a molding resin such as epoxy resin.
- a molding resin such as epoxy resin.
- Transfer molding in which the lead frame is clamped between an upper mold and a lower mold and the mold resin is injected into the cavity, is generally used as a sealing method using mold resin.
- a multi-row mold resin injection process is generally known as a molding method with high productivity for mold-sealed semiconductor devices.
- this resin injection process adjacent cavities are connected by runners, and the mold resin is injected into the cavity through the runner, and the mold resin is injected into the adjacent cavity through the runner, which is repeated. (See Patent Document 1, for example).
- runners are formed between adjacent cavities, so not only the molded part corresponding to the cavity but also the runner part corresponding to the runner is molded. Since the runner part is unnecessary, it is cut and removed by a punch in the resin cutting process.
- an object of the present disclosure is to provide a technique capable of suppressing the occurrence of cracks at the cut portion of the molded portion when the runner portion connecting the adjacent molded portions is cut and removed.
- a semiconductor manufacturing apparatus includes a plurality of cavities filled with a mold resin to form a plurality of molded parts, one end of which is connected to the gate of one of the adjacent cavities, and the other cavity. at least one runner whose end is connected to the gate of the other of the adjacent cavities and through which the mold resin flows, wherein the height position of the upper end of the at least one runner on the one end side is , higher than the height position of the upper end of the other end of at least one of said runners.
- shear stress is first applied to one end side of the runner portion, and then shear stress is applied to the other end side of the runner portion.
- the shear stress required to cut can be applied.
- FIG. 1 is a cross-sectional view of a semiconductor device manufactured using the semiconductor manufacturing apparatus according to Embodiment 1;
- FIG. 1 is a front view of a semiconductor device;
- FIG. 4 is a flow chart showing a method for manufacturing a semiconductor device using the semiconductor manufacturing apparatus according to Embodiment 1;
- 2 is a cross-sectional view of a mold included in the semiconductor manufacturing apparatus according to Embodiment 1;
- FIG. 4 is a side view showing a resin cutting step in Embodiment 1.
- FIG. FIG. 10 is a side view showing a resin cutting process in Modification 1 of Embodiment 1;
- FIG. 10 is a side view showing a resin cutting step in Modification 2 of Embodiment 1;
- FIG. 12 is a side view showing a resin cutting step in Modification 3 of Embodiment 1;
- FIG. 20 is a side view showing a resin cutting step in Modification 4 of Embodiment 1;
- FIG. 11 is a side view showing a resin cutting step in Embodiment 2;
- FIG. 1 is a cross-sectional view of a semiconductor device 100 manufactured using the semiconductor manufacturing apparatus according to the first embodiment.
- FIG. 2 is a front view of the semiconductor device 100.
- FIG. 1 is a cross-sectional view of a semiconductor device 100 manufactured using the semiconductor manufacturing apparatus according to the first embodiment.
- FIG. 2 is a front view of the semiconductor device 100.
- the X direction, Y direction and Z direction are orthogonal to each other.
- the X, Y and Z directions shown in the following figures are also orthogonal to each other.
- the direction including the X direction and the ⁇ X direction, which is the direction opposite to the X direction is also referred to as the “X-axis direction”.
- the direction including the Y direction and the ⁇ Y direction, which is the direction opposite to the Y direction is also referred to as the “Y-axis direction”.
- a direction including the Z direction and the ⁇ Z direction, which is the direction opposite to the Z direction is also referred to as the “Z-axis direction”.
- a semiconductor device 100 manufactured using a semiconductor manufacturing apparatus As shown in FIG. 1 , a semiconductor device 100 includes a plurality of lead frames 2 , IGBT elements 1 , diode elements 3 , IC (Integrated Circuit) elements 8 , and molded parts 4 .
- a semiconductor device 100 is a semiconductor device in which the tips of power terminals 5a and IC terminals 6a in a plurality of lead frames 2 protruding outside from a molded portion 4 face upward (in the Z direction).
- Each lead frame 2 is generally manufactured using copper or a copper alloy. Since each lead frame 2 is stably manufactured by press working, it has a width of 0.1 mm or more and 1 mm or less in accordance with the current value flowing through each lead frame 2 .
- the lead frame 2 on the left side ( ⁇ X direction) in FIG. 1 includes a power terminal 5a, a power inner lead 5b, and a die pad 5c. 3 are joined by solder 9 .
- the lead frame 2 on the right side (X direction) has an IC terminal 6a and an IC inner lead 6b. It is
- the diode element 3 and the power inner lead 5b, and the diode element 3 and the IGBT element 1 are wire-bonded using the power wire 11. Also, the IC element 8 and the IC inner lead 6b, and the IC element 8 and the IGBT element 1 are wire-bonded using an IC wire 7. As shown in FIG.
- the semiconductor element mounted on the die pad 5c is not limited to the general IGBT element 1 and the diode element 3 manufactured using Si, but may be a MOSFET element or an SBD (Schottky Barrier Diode) element manufactured using SiC. There may be.
- a metal with high electrical conductivity such as gold, silver, or copper is selected as the material for the IC wire 7 .
- the metal selected as the material for the IC wire 7 is processed to a diameter of 0.05 mm or less and used as the IC wire 7 .
- the power wire 11 is connected to an element through which a large current flows, such as the IGBT element 1, Al is generally selected as the material of the power wire 11 because its electric conductivity is not as high as that of Ag, but it is inexpensive. is. Moreover, the power wire 11 is used after being processed to have a diameter of 0.1 mm or more and 0.5 mm or less.
- Molded portion 4 forms a package of semiconductor device 100 .
- the molded part 4 is made of a thermosetting epoxy resin as a molding resin injected through a gate 25 into cavities 23a and 23b (see FIG. 4) of a mold 20 (see FIG. 4). is formed by transfer molding.
- a thermosetting epoxy resin mixed with a filler such as silicon dioxide (SiO 2 ).
- the insulating heat dissipation material present on the lower side (-Z direction) of the die pad 5c is not the molded part 4, but has a thickness of 0.1 mm or more and 0.3 mm or less.
- a sheet body having a thickness, a DBC (Direct Bonded Copper) substrate, an AMB (Active Metal Brazing) substrate, or a DBA (Direct Bonded Aluminum) substrate may be provided.
- the sheet body is made of epoxy resin mixed with aluminum nitride (AlN), boron nitride (BN), or silicon dioxide (SiO 2 ), which are high heat dissipation fillers.
- AlN aluminum nitride
- BN boron nitride
- SiO 2 silicon dioxide
- a DBC substrate, AMB substrate, or DBA substrate is formed by combining high heat dissipation insulating materials such as aluminum nitride, silicon nitride ( Si3N4 ), or silicon dioxide.
- FIG. 3 is a flow chart showing a method of manufacturing the semiconductor device 100 using the semiconductor manufacturing apparatus according to the first embodiment.
- step S1 a pre-process is first performed (step S1).
- step S1 the IC element 8 is placed on one of the lead frames 2 via the Ag paste 10, and the Ag paste 10 is cured in an oven.
- IGBT element 1 and diode element 3 are joined to lead frame 2 on the other side with solder 9 .
- Wire bonding is performed using a power wire 11 between the diode element 3 and the power inner lead 5b, and between the diode element 3 and the IGBT element 1, so that the IC element 8 and the IC inner lead 6b, and the IC element 8 and the IGBT element 1 are bonded.
- wire bonding is performed using the IC wire 7 . This completes an assembly (not shown).
- step S2 a molding process is performed (step S2). Since the details of the molding process will be described later, a brief description will be given here without using drawings.
- step S2 a tablet-shaped mold resin is placed in the lower mold, and the assembly is placed on the tablet-shaped mold resin. After the upper mold and the lower mold are clamped together, liquid molding resin is injected into the cavity of the mold. A high hydrostatic pressure of 5 MPa or more and 15 MPa or less is applied to the cavity of the mold in a state in which the liquid mold resin is filled, thereby molding the molded portion 4 .
- the upper and lower molds are opened, and at the same time the ejector pins and plunger chips of the upper and lower molds are protruded, so that the molded part 4 is separated from the upper mold and the lower mold.
- a molded part 4 including a plurality of lead frames 2, that is, a molded body (not shown) is taken out from the lower mold.
- step S3 an after-curing process is performed on the molded body (step S3).
- step S3 in order to completely harden the portion of the molding part 4 that has not been completely hardened in the mold, the heater power of the oven is turned on, and the molded product is baked in the oven.
- the oven heater power is turned off and the molded body is cooled to the ambient temperature.
- step S4 resin cutting and tie bar cutting processes are performed on the molded body (step S4).
- step S4 in order to remove the excess portion from the molded portion 4, the excess portion of the molded portion 4 is punched out with a resin cut die. Furthermore, in order to remove the tie bars formed on the plurality of lead frames 2, the tie bars are punched out by a tie bar cutting die.
- step S5 a plating process is performed on the molded body (step S5).
- the surfaces of the plurality of lead frames 2 are plated with tin or tin-copper in order to prevent deterioration of the surfaces of the plurality of lead frames 2 so that they can be stored for a long period of time in a high-temperature and high-humidity environment.
- the surfaces of the plurality of lead frames 2 may be electrodeposited with benzotriazole (1,2,3-benzotriazole: BTA) or the like, which is an antioxidant film.
- step S6 lead cutting and lead forming processes are performed on the molded body.
- the lead frames are punched out by a lead cutting die to remove excess frames from the plurality of lead frames 2.
- the semiconductor device 100 is completed by bending the power terminal 5a and the IC terminal 6a upward (in the Z direction) with a lead forming die.
- step S7 After the semiconductor device 100 is tested for electrical characteristics and appearance (step S7), the semiconductor device 100 is packed and shipped (step S8).
- FIG. 4 is a cross-sectional view of the mold 20 provided in the semiconductor manufacturing apparatus according to the first embodiment.
- 5(a) to 5(c) are side views showing the resin cutting process in the first embodiment.
- the arrows in FIG. 4 indicate the direction of flow of the liquid mold resin.
- the mold 20 provided in the semiconductor manufacturing apparatus includes an upper mold 21 and a lower mold 22. Although not shown, the mold 20 is provided with an ejector pin and a plunger tip.
- the mold 20 is a multi-row molding mold that simultaneously molds a plurality of semiconductor devices 100 by transfer molding.
- the lower mold 22 is arranged at a position facing the upper mold 21. Inside the mold 20 composed of the upper mold 21 and the lower mold 22, there are two cavities 23a and 23b, Runners 24a, 24b and gates 25a, 25b, 25c are formed.
- the runner 24b connects the liquid molding resin supply source (not shown) and the cavity 23b, and the runner 24a connects two adjacent cavities 23a and 23b.
- one end of the runner 24b is connected to the gate 25c of the cavity 23b, and the other end is connected to a liquid mold resin supply source (not shown).
- One end of the runner 24a is connected to the gate 25a of one of the two adjacent cavities 23a and 23b, and the other end is connected to the gate of the other of the two adjacent cavities 23a and 23b. 25b.
- the gate 25c is a mold resin inlet formed in the cavity 23b, and the gate 25b is a mold resin outlet formed in the cavity 23b. Also, the gate 25a is an inflow port for the molding resin formed in the cavity 23a.
- the mold resin supplied from the mold resin supply source through the runner 24b is injected into the cavity 23b through the gate 25c. Further, the mold resin injected into the cavity 23b is injected into the cavity 23a through the gate 25b and the runner 24a and the gate 25a. The injection of the mold resin is continued until the cavities 23a and 23b are filled with the mold resin.
- FIG. 4 shows an example in which two cavities 23a and 23b are formed, the present invention is not limited to this, and three or more cavities may be formed. Also, the number of runners 24a is changed according to the number of cavities.
- the mold resin filled in the two cavities 23a and 23b not only forms the two molded parts 4a and 4b, but also the runner parts 12a and 12b are formed by the mold resin filled in the runners 24a and 24b. molded.
- the runners 12a and 12b are unnecessary, they are cut and removed by the punch 31 (see FIG. 5) provided in the resin cutting mold (not shown) in the resin cutting process.
- a flash burr (not shown) generated between the molded part 4 and a tie bar (not shown) due to insufficient clamping between the upper mold 21 and the lower mold 22, and the upper mold 21
- the thickness burr (not shown) generated by the thickness of the lead frame 2 without being clamped by the lower mold 22 is struck off and removed.
- Embodiment 1 in order to solve such a problem, in Embodiment 1, as shown in FIG.
- the upper end (Z-direction end) of the runner 24a on the one end side is higher than the upper end (Z-direction end) on the other end side.
- the vertical width of one end of the runner 24a is formed to be 0.01 mm or more wider than the vertical width of the other end. Accordingly, as shown in FIG. 5A, the thickness of the runner portion 12a on one end side becomes 0.01 mm or more thicker than the thickness on the other end side, and the upper end of the runner portion 12a on the one end side (in the Z direction) end) is 0.01 mm or more higher than the height position of the upper end (end in the Z direction) on the other end side.
- the punch 31 contacts the other end side of the runner portion 12a, and the load of the punch 31 is applied in this state.
- the entire shear stress of the resin cutting capacity is applied to the connecting portion between the other end of the runner portion 12a and the molded portion 4a, so that the other end of the runner portion 12a and the molded portion 4a are normally cut, and the runner portion 12a is knocked down and removed.
- the semiconductor manufacturing apparatus has a plurality of cavities 23a and 23b filled with a mold resin to form a plurality of molded parts, and one end of each of the cavities 23a and 23b adjacent to each other.
- at least one runner 24a connected to the gate 25a of one of the cavities 23a, the other end of which is connected to the gate 25b of the other cavity 23b of the adjacent cavities 23a and 23b, and through which the molding resin flows.
- the height position of the upper end (Z direction end) of at least one runner 24a is higher than the height position of the other end side (Z direction end) of at least one runner 24a.
- the vertical width is different between one end side and the other end side of at least one runner 24a.
- the semiconductor manufacturing apparatus supports the plurality of molded parts 4a and 4b from below (-Z direction) when at least one runner part 12a connecting the adjacent molded parts 4a and 4b is cut.
- a die 30 is further provided.
- FIGS. 6(a) to 6(c) are side views showing the resin cutting process in Modification 1 of Embodiment 1.
- FIG. FIG. 7 is a side view showing a resin cutting step in Modification 2 of Embodiment 1.
- FIG. 8 is a side view showing a resin cutting step in Modification 3 of Embodiment 1.
- FIG. 9 is a side view showing a resin cutting step in Modification 4 of Embodiment 1.
- one end side of the runner 24a may have a step so that the height position is higher than the other end side.
- the step is set so that one end of the runner 24a is higher than the other end by 0.01 mm or more.
- the vertical widths of the one end side and the other end side of the runner 24a are the same. Further, it is more effective if the step is set to the vertical width of one end side of the runner 24a.
- one end side of the runner portion 12a is formed with a step so that the height position is higher than the other end side.
- FIGS. 6(a) to (c) The resin cutting process shown in FIGS. 6(a) to (c) is performed in the same procedure as in FIGS. 5(a) to (c). As a result, when the runner portion 12a connecting the adjacent molded portions 4a and 4b is cut and removed, it is possible to suppress the occurrence of cracks at the cut portions of the molded portions 4a and 4b.
- the runner 24a may have the same vertical width on one end side and the other end side, and may have an inclination so that the one end side is higher than the other end side.
- the inclination is set so that one end of the runner 24a is higher than the other end by 0.01 mm or more.
- the one end side and the other end side of the runner 24a may have the same vertical width, and the one end side of the runner 24a may be provided with a recess projecting upward (in the Z direction).
- a protrusion 13 is formed on one end of the runner portion 12a so as to be higher than the other end.
- the recesses provided in the runner 24a are cylindrical or prismatic.
- the projection 13 formed on the runner portion 12a is formed in a cylindrical or prismatic shape so as to correspond to the recess.
- the load of the punch 31 is concentrated on the projections 13 formed on the runner portion 12a, so that the runner portion 12a is likely to start cutting. Therefore, it is possible to further suppress the occurrence of cracks at the cut portions of the molded portions 4a and 4b as compared with the case of the first embodiment and the first and second modifications thereof.
- the concave portion of the runner 24a may have an acute-angled shape.
- the projections 13 are formed into acute-angled shapes corresponding to the recesses.
- the recess provided in the runner 24a is conical or triangular pyramidal.
- the projection 13 formed on the runner portion 12a is formed in a conical or triangular pyramidal shape so as to correspond to the recess.
- the mold 20 can be manufactured at a lower cost than in the case of Modification 3 of Embodiment 1. In addition, it is possible to suppress cracking of the projections 13 during punching.
- FIG. 10(a) and 10(b) are side views showing the resin cutting process in the second embodiment.
- the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the shape of the die 30 is different from that in the first embodiment.
- the die 30 supports the molded parts 4a and 4b from the lower side (-Z direction), and also laterally (X-axis A flat plate portion 30a and two vertical portions 30b extending in the vertical direction (Z-axis direction) from the upper surface (the surface in the Z direction) of the flat plate portion 30a so as to be able to be supported from above.
- the lower part of the connecting part of the molded parts 4a and 4b with the runner part 12a is laterally ( X-axis direction), the shear stress necessary for cutting the runner portion 12a is more likely to be applied than in the case of the first embodiment.
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Abstract
Description
実施の形態1について、図面を用いて以下に説明する。図1は、実施の形態1に係る半導体製造装置を用いて製造された半導体装置100の断面図である。図2は、半導体装置100の正面図である。
上記では、ランナー24aにおける一端側と他端側とで上下幅が異なるものとして説明を行ったが、ランナー24aにおける一端側の上端(Z方向の端)の高さ位置が、他端側の上端(Z方向の端)の高さ位置よりも高く形成されていればよく、他の構造を採用することも可能である。以下、実施の形態1の変形例について説明を行う。
次に、実施の形態2に係る半導体製造装置について説明する。図10(a),(b)は、実施の形態2におけるレジンカット工程を示す側面図である。なお、実施の形態2において、実施の形態1で説明したものと同一の構成要素については同一符号を付して説明は省略する。
Claims (8)
- モールド樹脂が充填されて複数のモールド成形部がそれぞれ成形される複数のキャビティと、
一端が隣り合う前記キャビティのうちの一方の前記キャビティのゲートと接続され、他端が隣り合う前記キャビティのうちの他方の前記キャビティのゲートと接続され、かつ、前記モールド樹脂が流動する少なくとも1つのランナーと、を備え、
少なくとも1つの前記ランナーにおける一端側の上端の高さ位置は、少なくとも1つの前記ランナーにおける他端側の上端の高さ位置よりも高い、半導体製造装置。 - 少なくとも1つの前記ランナーの一端側と他端側とで上下幅が異なる、請求項1に記載の半導体製造装置。
- 少なくとも1つの前記ランナーの一端側と他端側とで段差を有する、請求項1に記載の半導体製造装置。
- 少なくとも1つの前記ランナーの一端側と他端側とで傾斜を有する、請求項1に記載の半導体製造装置。
- 少なくとも1つの前記ランナーの一端側には上方に突出する凹部が設けられた、請求項1に記載の半導体製造装置。
- 前記凹部は鋭角形状を有する、請求項5に記載の半導体製造装置。
- 隣り合う前記モールド成形部を接続する少なくとも1つのランナー部が切断される際に、複数の前記モールド成形部を下側から支持するダイをさらに備えた、請求項1から請求項6のいずれか1項に記載の半導体製造装置。
- (a)複数のモールド成形部と、隣り合う前記モールド成形部を接続する少なくとも1つのランナー部とを有するモールド成形体を準備する工程と、
(b)隣り合う前記モールド成形部の一方と接続された少なくとも1つの前記ランナー部の一端側にパンチを接触させた状態で前記パンチの荷重を印加する工程と、
(c)隣り合う前記モールド成形部の他方と接続された少なくとも1つの前記ランナー部の他端側に前記パンチを接触させた状態で前記パンチの荷重を印加し、少なくとも1つの前記ランナー部を切断する工程と、
を備えた、半導体装置の製造方法。
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PCT/JP2021/021839 WO2022259395A1 (ja) | 2021-06-09 | 2021-06-09 | 半導体製造装置および半導体装置の製造方法 |
DE112021007793.7T DE112021007793T5 (de) | 2021-06-09 | 2021-06-09 | Halbleiter-Herstellungseinrichtung und Verfahren zum Herstellen einer Halbleitervorrichtung |
CN202180098986.9A CN117425952A (zh) | 2021-06-09 | 2021-06-09 | 半导体制造装置及半导体装置的制造方法 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02246349A (ja) * | 1989-03-20 | 1990-10-02 | Fujitsu Ltd | 半導体装置の製造方法 |
JPH06275671A (ja) * | 1993-03-24 | 1994-09-30 | Nec Kansai Ltd | 半導体中間構体及びその樹脂モールド装置 |
JPH08250530A (ja) * | 1995-03-10 | 1996-09-27 | Fujitsu Ltd | 半導体装置の製造方法及びモールド金型 |
JPH0919939A (ja) * | 1995-07-05 | 1997-01-21 | Hitachi Ltd | トランスファ成形装置 |
JP2010109314A (ja) * | 2008-09-30 | 2010-05-13 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
WO2016072012A1 (ja) * | 2014-11-07 | 2016-05-12 | 三菱電機株式会社 | 電力用半導体装置およびその製造方法 |
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- 2021-06-09 WO PCT/JP2021/021839 patent/WO2022259395A1/ja active Application Filing
- 2021-06-09 DE DE112021007793.7T patent/DE112021007793T5/de active Pending
- 2021-06-09 CN CN202180098986.9A patent/CN117425952A/zh active Pending
- 2021-06-09 JP JP2023526705A patent/JPWO2022259395A1/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02246349A (ja) * | 1989-03-20 | 1990-10-02 | Fujitsu Ltd | 半導体装置の製造方法 |
JPH06275671A (ja) * | 1993-03-24 | 1994-09-30 | Nec Kansai Ltd | 半導体中間構体及びその樹脂モールド装置 |
JPH08250530A (ja) * | 1995-03-10 | 1996-09-27 | Fujitsu Ltd | 半導体装置の製造方法及びモールド金型 |
JPH0919939A (ja) * | 1995-07-05 | 1997-01-21 | Hitachi Ltd | トランスファ成形装置 |
JP2010109314A (ja) * | 2008-09-30 | 2010-05-13 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
WO2016072012A1 (ja) * | 2014-11-07 | 2016-05-12 | 三菱電機株式会社 | 電力用半導体装置およびその製造方法 |
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DE112021007793T5 (de) | 2024-04-18 |
JPWO2022259395A1 (ja) | 2022-12-15 |
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