WO2014084304A1 - 半導体装置の製造方法及び製造装置 - Google Patents
半導体装置の製造方法及び製造装置 Download PDFInfo
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- WO2014084304A1 WO2014084304A1 PCT/JP2013/082032 JP2013082032W WO2014084304A1 WO 2014084304 A1 WO2014084304 A1 WO 2014084304A1 JP 2013082032 W JP2013082032 W JP 2013082032W WO 2014084304 A1 WO2014084304 A1 WO 2014084304A1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 50
- 239000004065 semiconductor Substances 0.000 title claims abstract description 47
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 20
- 238000009792 diffusion process Methods 0.000 claims description 14
- 235000012431 wafers Nutrition 0.000 description 54
- 238000007747 plating Methods 0.000 description 37
- 239000000243 solution Substances 0.000 description 34
- 239000002184 metal Substances 0.000 description 17
- 229910052751 metal Inorganic materials 0.000 description 17
- 238000009713 electroplating Methods 0.000 description 15
- 230000035515 penetration Effects 0.000 description 9
- 238000004070 electrodeposition Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/12—Semiconductors
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
- H01L21/76879—Filling of holes, grooves or trenches, e.g. vias, with conductive material by selective deposition of conductive material in the vias, e.g. selective C.V.D. on semiconductor material, plating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/001—Apparatus specially adapted for electrolytic coating of wafers, e.g. semiconductors or solar cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/026—Electroplating of selected surface areas using locally applied jets of electrolyte
-
- 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
- H01L21/18—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 the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
- H01L21/2885—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition using an external electrical current, i.e. electro-deposition
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76898—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics formed through a semiconductor substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to a semiconductor device manufacturing method and a semiconductor device manufacturing apparatus.
- a three-dimensional integration technique in which semiconductor devices are stacked three-dimensionally has been proposed.
- a fine diameter of, for example, 100 ⁇ m or less is used so as to penetrate a semiconductor wafer (hereinafter referred to as “wafer”) thinned by polishing the back surface and having a plurality of circuits formed on the front surface.
- a plurality of so-called through electrodes are formed.
- TSV Through Silicon Via
- a through electrode by performing electrolytic plating in a through hole of a wafer, for example, using a template having a flow path such as a plating solution (Patent Document 2). Specifically, first, a template is disposed so as to face the wafer, and then a plating solution is supplied from the flow path of the template into the through hole of the wafer. Thereafter, a voltage is applied using the template side electrode as the anode and the wafer side counter electrode as the cathode, and plating is performed in the through hole to form the through electrode in the through hole.
- a counter electrode is required on the wafer side.
- the apparatus configuration becomes complicated and large.
- plating is formed on the entire surface of the wafer, and therefore, plating formed outside the inside of the through-hole is removed by, for example, chemical mechanical polishing (CMP).
- CMP chemical mechanical polishing
- an electrical test of the through electrode and circuit of the wafer is performed. For example, since the counter electrode on the wafer side is a common electrode for all the through electrodes, if an electrical test is performed on the wafer through electrodes or electronic circuits in this state, all the through electrodes are short-circuited. An electrical test cannot be performed. For this reason, in order to perform an electrical test, a separate process such as removing the counter electrode is required. Therefore, there is room for improvement in the throughput of the manufacturing process of the semiconductor device.
- the present invention has been made in view of such a point, and an object thereof is to improve the throughput of the manufacturing process while reducing the manufacturing cost of the semiconductor device.
- the present invention provides a method for manufacturing a semiconductor device, comprising a plurality of flow passages through which a processing liquid flows with respect to a substrate on which a plurality of through holes penetrating in the thickness direction are formed, and A template placement step of arranging a template having a plurality of electrodes provided in the flow passage so that the plurality of flow passages correspond to the plurality of through holes, and the plurality of penetrations through the plurality of flow passages.
- a treatment liquid supply step of supplying a treatment liquid into the hole, a treatment step of applying a voltage to one of the plurality of electrodes as an anode and another electrode as a cathode, and performing a predetermined treatment on the substrate;
- an electrolysis process can be performed with a treatment liquid in a through-hole by applying a voltage using one electrode as an anode and the other electrode as a cathode among a plurality of electrodes of a template.
- a predetermined process can be performed. Therefore, since it is not necessary to provide a counter electrode on the wafer side as in the prior art, the device configuration can be simplified and the manufacturing cost of the semiconductor device can be reduced. In addition, since the predetermined process can be performed only in the through hole, the throughput of the predetermined process on the substrate can be improved.
- the plurality of through electrodes can be electrically independent, and the substrate is left as it is. Electrical tests of through electrodes and circuits can be performed. Therefore, it is possible to omit steps such as removing the counter electrode when performing an electrical test as in the prior art, and to improve the throughput of the manufacturing process of the semiconductor device.
- a semiconductor device manufacturing apparatus including a template having a plurality of flow passages through which a processing solution flows and a plurality of electrodes provided in the flow passage, and a through hole penetrating in a thickness direction.
- a template placement step of arranging the template so that the plurality of flow paths and the plurality of through holes correspond to the substrate on which a plurality of holes are formed, and the plurality of through holes via the plurality of flow paths A treatment liquid supply step for supplying a treatment liquid therein, and a treatment step of applying a voltage to one of the plurality of electrodes as an anode and the other electrode as a cathode to perform a predetermined treatment on the substrate.
- a control unit that controls the template to be executed.
- a device layer 12 is formed on a bulk layer 11.
- the surface on the device layer 12 side is referred to as a front surface 11a
- the surface on the opposite side to the device layer 12 is referred to as a back surface 11b.
- a surface opposite to the bulk layer 11 is referred to as a front surface 12a
- a surface on the bulk layer 11 side is referred to as a back surface 12b.
- the bulk layer 11 is made of, for example, P-type silicon, and the device layer 12 is formed with a CMOS in which, for example, an N-type MOS transistor 13 and a P-type MOS transistor 14 are combined.
- a field oxide film 16 is formed between the insulating film 15 and a P well 20 and an N well 30 described later.
- the N-type MOS transistor 13 has a diffusion region composed of a P well 20.
- a P + layer 21 connected to the ground is formed in the P well 20.
- a ground line 22 formed on the insulating film 15 is connected to the P + layer 21.
- the ground line 22 includes a first metal 22a connected to the P + layer 21 via a wiring, and a second metal 22b connected to the first metal 22a via a wiring.
- the second metal 22 b is connected to the bump 23 exposed on the surface 12 a of the device layer 12.
- the N-type MOS transistor 13 is provided with a set of P + layers 21, a ground line 22 and bumps 23, but actually, the N-type MOS transistor 13 includes a plurality of sets of P + layers 21. A + layer 21, a ground line 22, and a bump 23 are formed.
- the P-type MOS transistor 14 has a diffusion region composed of an N well 30.
- an N + layer 31 connected to a power source is formed in the N well 30.
- a power line 32 formed on the insulating film 15 is connected to the N + layer 31.
- the power supply line 32 includes a first metal 32a connected to the N + layer 31 via a wiring, and a second metal 32b connected to the first metal 32a via a wiring.
- the second metal 32 b is connected to the bump 33 exposed on the surface 12 a of the device layer 12.
- the P-type MOS transistor 14 has two sets of N + layers 31, power supply lines 32 and bumps 33.
- the number of these N + layers 31, power supply lines 32 and bumps 33 is as follows. It is not limited to this and is arbitrarily set.
- Each of the N-type MOS transistor 13 and the P-type MOS transistor 14 includes an input gate 40 that is formed in the insulating film 15 and receives a signal, and an electrostatic protection circuit 41 that is formed in the P well 20 or the N well 30. is doing.
- the electrostatic protection circuit 41 includes a protection diode 41 a connected to the power supply side (power supply line 32) and a ground side in order to avoid electrostatic breakdown (ESD) of the input gate 40. And a protective diode 41b connected to the (ground line 22).
- the electrostatic protection circuit 41 is connected to the input gate 40.
- a protective resistor 42 for controlling the current flowing through the input gate 40 is provided between the signal line 43 and the electrostatic protection circuit 41.
- a signal line 43 formed on the insulating film 15 is connected to the electrostatic protection circuit 41.
- the signal line 43 includes a first metal 43a connected to the electrostatic protection circuit 41 via a wiring, and a second metal 43b connected to the first metal 43a via a wiring.
- the second metal 43 b is connected to the bumps 44 exposed on the surface 12 a of the device layer 12.
- the device layer 12 is also formed with other wirings, various circuits, electrodes, etc., although not shown.
- the support substrate 50 is then disposed on the surface 12a of the device layer 12 as shown in FIG.
- the support substrate 50 is disposed so as to cover the surface 12 a of the device layer 12.
- the support substrate 50 is bonded to the device layer 12 with, for example, a peelable adhesive. Note that a silicon wafer or a glass substrate is used for the support substrate 50.
- the back surface 11b of the bulk layer 11 is polished, and the wafer 10 is thinned.
- the front and back surfaces of the wafer 10 are reversed, and the device layer 12 is disposed below the bulk layer 11.
- the subsequent process is performed in a state where the wafer 10 is thinned.
- the support substrate 50 gives the wafer 10 sufficient strength, it is possible to prevent the wafer 10 from being cracked during transportation. it can.
- a plurality of through holes 60 to 62 penetrating the wafer 10 in the thickness direction are formed. These through holes 60 to 62 do not completely penetrate the wafer 10, but as will be described later, through electrodes 80 to 82 formed in the through holes 60 to 62 are provided between the front surface 12a and the back surface 11b of the wafer 10. Are electrically connected to each other. Specifically, the through holes 60 to 62 penetrate through the bulk layer 11 of the wafer 10 in the thickness direction, and are further formed to positions reaching the ground line 22, the power supply line 32, and the signal line 43 in the device layer 12, respectively. .
- the through hole 60 formed at a position corresponding to the ground line 22 is referred to as a grounding through hole 60
- the through hole 61 formed at a position corresponding to the power line 32 is referred to as a power supply through hole 61
- the through hole 62 formed at a position corresponding to 43 is referred to as a signal through hole 62.
- the plurality of through holes 60 to 62 may be simultaneously formed by, for example, a photolithography process and an etching process. Alternatively, the plurality of through holes 60 to 62 may be formed by supplying an etching solution onto the wafer 10 using a template 71 described later and applying a voltage to the etching solution to electrolytically etch the wafer 10.
- the manufacturing apparatus 70 includes a template 71 and a control unit 72 that controls the template 71.
- the support substrate 50 provided on the wafer 10 is not shown in order to prioritize easy understanding of the technology.
- the template 71 has, for example, a substantially disk shape, and has the same shape as that of the wafer 10 in plan view.
- silicon carbide SiC is used for the template 71.
- the template 71 has a plurality of flow passages 73 to 75 through which a plating solution as a processing solution is circulated.
- the plurality of flow passages 73 to 75 are respectively formed at positions facing the plurality of through holes 60 to 62 in the wafer 10 when the template 71 is disposed on the back surface 11b side of the wafer 10.
- the flow passages 73 to 75 penetrate from the front surface 71a to the back surface 71b of the template 71 in the thickness direction, and both ends of the flow passages 73 to 75 are open.
- Electrodes 76 to 78 are provided on the side surfaces of the flow paths 73 to 75, respectively.
- the flow path 73 facing the grounding through hole 60 is referred to as a grounding flow path 73, and the electrode provided in the grounding flow path 73 is referred to as a grounding electrode 76.
- the flow passage 74 facing the power supply through hole 61 is referred to as a power supply flow passage 74, and the electrode provided in the power supply flow passage 74 is referred to as a power supply electrode 77.
- the flow path 75 facing the signal through hole 62 is referred to as a signal flow path 75, and the electrode provided in the signal flow path 75 is referred to as a signal electrode 78.
- the template 71 having such a configuration is disposed on the back surface 11 side of the wafer 10.
- the plating solution M is supplied to the through holes 60 to 62 through the flow passages 73 to 75, respectively.
- the plating solution M is filled in the flow passages 73 to 75 and the through holes 60 to 62, respectively.
- a mixed solution electrolytic copper plating solution in which copper sulfate and sulfuric acid are dissolved is used.
- through electrodes are formed in the through holes 60 to 62.
- a power supply device (not shown) applies a voltage using the ground electrode 76 as an anode and the power electrode 77 as a cathode as shown in FIG.
- a current flows in this order through the plating solution M and the power supply electrode 77 in the power supply through hole 61 and the power flow passage 74 (arrows in FIG. 8).
- electrolytic plating is performed on the plating solution M in the grounding through hole 60, and a through electrode 80 is formed in the grounding through hole 60 as shown in FIG.
- one of the pair of power supply electrodes 77, 77 has one power supply electrode 77A as an anode and the other power supply electrode 77B as a cathode. Apply.
- one power electrode 77A, one power flow path 74A, one plating hole M in one power supply through hole 61A, one power line 32A, one N + layer 31A, N well 30, and other N The current flows in this order through the + layer 31B, the other power supply line 32B, the other power supply through hole 61B, the plating solution M in the other power supply flow passage 74B, and the other power supply electrode 77B (arrows in FIG. 10). .
- electrolytic plating is performed on the plating solution M in one power supply through hole 61A, and a through electrode 81 is formed in one power supply through hole 61A as shown in FIG.
- electrolytic plating is performed by applying a voltage using the other power supply electrode 77B as an anode and the one power supply electrode 77A as a cathode, A through electrode 81 is formed in the other power supply through hole 61B.
- a power supply device (not shown) applies a voltage using the signal electrode 78 corresponding to the P-type MOS transistor 14 as an anode and the power electrode 77 as a cathode as shown in FIG.
- the voltage at this time is set according to the specifications (for example, voltage and pulse width) compensated by the electrostatic protection circuit 41.
- the plating solution M, the signal line 43, the electrostatic protection circuit 41, the N well 30, the N + layer 31, the power supply line 32, and the power supply penetration in the signal electrode 78, the signal flow path 75 and the signal through hole 62 are provided.
- electrolytic plating is performed on the plating solution M in the signal through hole 62, and a through electrode 82 is formed in the signal through hole 62 as shown in FIG.
- a through electrode is formed in the signal through hole 62 of the N-type MOS transistor 13, for example, electrolytic plating is performed by applying a voltage with the signal electrode 78 as an anode and the power electrode 77 as a cathode.
- the through electrode 82 is formed in the signal through hole 62.
- through electrodes 80 to 82 are formed in the through holes 60 to 62 using the manufacturing apparatus 70, respectively.
- the electrical characteristics of the through electrodes 80 to 82 of the wafer 10 and the circuit of the device layer 12 are inspected (electrical test). At this time, since the plurality of through electrodes 80 to 82 are electrically independent, an electrical test can be performed in this state.
- the electrical test may be performed using the electrodes 76 to 78 of the template 71 as the electrodes for the electrical test in a state where the template 71 is disposed on the back surface 11b side of the wafer 10.
- a plurality of test electrodes 84 are provided on the template 71, and the test electrodes 84 are brought into contact with the bumps 83, so that an electrical signal is sent to the through electrodes 80 to 82 and the circuit of the device layer 12 to perform an electrical test. You may go.
- the bump 83 is plated until it contacts the test electrode 84.
- the bump 83 can be welded to the test electrode 84, so that a stable inspection can be performed.
- the bumps 23, 33, and 44 of the device layer 12 stacked as shown in FIG. 15 and the bumps 83 on the through electrodes 80 to 82 are made conductive.
- a plurality of wafers 10 are bonded.
- the wafer 10 and the support substrate 50 are also peeled off.
- the semiconductor device 100 in which the wafers 10 are three-dimensionally stacked is manufactured.
- the through hole 60 is provided. Electrolytic plating can be performed with the plating solution M in the through holes 62, and the through electrodes 80 through 82 can be formed in the through holes 60 through 62, respectively.
- the device configuration of the manufacturing apparatus 70 can be simplified and the manufacturing cost of the semiconductor device 100 can be reduced. it can.
- the through electrodes 80 to 82 can be formed only in the through holes 60 to 62, respectively, the step of removing plating formed outside the through holes by chemical mechanical polishing or the like as in the prior art is omitted. be able to. Accordingly, the throughput of the plating process can be improved.
- the plurality of through electrodes 80 to 82 are electrically independent. In this state, the electrical test of the through electrodes 80 to 82 of the wafer 10 and the circuit of the device layer 12 can be performed. Therefore, it is possible to omit a process such as removing the counter electrode when performing an electrical test as in the prior art, and to improve the throughput of the manufacturing process of the semiconductor device 100.
- the selection of the anode and the cathode when performing electrolytic plating can be arbitrarily selected according to which through-electrodes 80 to 82 are formed.
- a voltage may be applied using the grounding electrode 76 as an anode and the power supply electrode 77 as a cathode.
- a voltage may be applied using one power supply electrode 77 as an anode and another power supply electrode 77 as a cathode.
- the through electrode 82 is formed in the signal through hole 62, a voltage may be applied using the signal electrode 78 as an anode and the power electrode 77 as a cathode.
- the electrostatic protection circuit 41 of the wafer 10 is used even when there is no pair of signal through holes 62 and 62 and only one signal through hole 62 exists.
- the through electrode 82 can be formed. Therefore, the present invention is extremely useful.
- the voltage is applied using the ground electrode 76 as an anode and the power electrode 77 as a cathode.
- Different electrodes may be set. For example, as shown in FIG. 16, a voltage is applied by using one grounding electrode 76A as an anode and the other grounding electrode 76B as a cathode among a pair of grounding electrodes 76, 76.
- electrolytic plating is performed by applying a voltage with the other grounding electrode 76B as an anode and the one grounding electrode 76A as a cathode,
- the through electrode 80 can be formed in the other grounding through hole 60B.
- electrolytic plating is performed by applying a voltage using the grounding electrode 76 as an anode and the signal electrode 78 as a cathode, and the grounding through hole 60.
- a through electrode 80 can be formed therein.
- the device configuration of the manufacturing apparatus 70 can be simplified, the manufacturing cost of the semiconductor device 100 can be reduced, and the throughput of the manufacturing process of the semiconductor device 100 can be improved.
- the through electrode 82 when the through electrode 82 is formed in the signal through hole 62, a voltage is applied using the signal electrode 78 as an anode and the power supply electrode 77 as a cathode. As long as the diode is not reverse-biased inside 41, the electrode can be selected as appropriate. If the diode inside the electrostatic protection circuit 41 is forward-biased, a current flows appropriately, and the same processing is possible.
- the through electrode 82 when the through electrode 82 is formed in the signal through hole 62, the through electrode 80 is formed in the grounding through hole 60 in advance, and the through electrode 81 is formed in the power through hole 61. You may form.
- the through electrode 82 formed in the signal through hole 62 is an input signal through electrode.
- the present invention is also applicable to forming an output signal through electrode in the through hole. Can be applied.
- each of the N-type MOS transistor 13 and the P-type MOS transistor 14 has an output circuit 200 formed in the insulating film 15 (P well 20 or N well 30).
- a P + diffusion resistor 200a is provided between a power supply side drain of the output circuit 200 and a signal line 201 described later, and the ground side drain and signal line of the output circuit 200 are provided.
- An N + diffused resistor 200b is provided between the N + and the 201.
- the drain P + diffusion resistance 200 a of the P-type MOS transistor 14 is formed in the N well 30, and the N well 30 is connected to the power supply line 32. As shown in FIG.
- the P + diffusion resistor 200a and the N well 30 function as a protective diode for suppressing electrostatic breakdown.
- the N + diffusion resistor 200 b of the drain of the N-type MOS transistor 13 is formed in the P well 20, and the P well 20 is connected to the ground line 22.
- These N + diffusion resistors 200b and the P well 20 function as protective diodes.
- the output circuit 200 functions as an electrostatic protection circuit in the present invention.
- a signal line 201 formed in the insulating film 15 is connected to the output circuit 200.
- the signal line 201 includes a first metal 201a connected to the output circuit 200 via a wiring, and a second metal 201b connected to the first metal 201a via a wiring.
- the second metal 201 b is connected to the bump 202 exposed on the surface 12 a of the device layer 12.
- the signal through hole 210 similar to the signal through hole 62 in the above embodiment is formed.
- the plating solution M is supplied to the through holes 60, 61 and 210 through the flow passages 73 to 75 of the template 71.
- a power supply device (not shown) applies a voltage using the signal electrode 78 corresponding to the P-type MOS transistor 14 as an anode and the power electrode 77 as a cathode.
- the plating solution M, the signal line 201, the output circuit 200, the N well 30, the N + layer 31, the power supply line 32, and the power supply through hole 61 in the signal electrode 78, the signal flow path 75 and the signal through hole 210 are provided.
- electrolytic plating is performed by applying a voltage using the signal electrode 78 as an anode and the power electrode 77 as a cathode.
- the through electrode 82 is formed in the signal through hole 210.
- the device configuration of the manufacturing apparatus 70 can be simplified, the manufacturing cost of the semiconductor device 100 can be reduced, and the throughput of the manufacturing process of the semiconductor device 100 can be improved.
- the voltage is applied using the signal electrode 78 as an anode and the power electrode 77 as a cathode.
- the electrode can be selected as appropriate. If the diodes in the output circuit 200 and the P well 20 or the N well 30 are forward-biased, a current flows appropriately, and the same processing is possible.
- the through electrode 80 is formed in the grounding through hole 60 in advance, and the through electrode 81 is formed in the power through hole 61. You may form.
- the voltage is applied through the P well 20 or the N well 30 as the diffusion region to form the through electrodes 80 to 82 in the through holes 60 to 62.
- the voltage is applied.
- the path is not limited to this.
- the anode and the cathode are connected by a circuit (circuit portion in the present invention) formed of metal wiring or the like in the device layer 12 of the wafer 10 and a voltage is applied through the circuit, the through holes 60 to 62 are penetrated. Electrodes 80-82 can be formed.
- the case where the plating electrodes M are formed by using the plating solution M as the processing solution to form the through electrodes 80 to 82 in the through holes 60 to 62 of the wafer 10 has been described. It can also be applied to processes.
- the present invention can also be applied when forming an electrodeposition insulating film in the through holes 61 and 62 of the wafer 10.
- This electrodeposition insulating film is formed on the inner surface of the through holes 61 and 62 before the through electrodes 81 and 82 are formed in the through holes 61 and 62.
- an electrodeposition insulating film solution for example, an electrodeposition polyimide solution
- a voltage is applied using one power supply electrode 77 as an anode and the other power supply electrode 77 as a cathode of the pair of power supply electrodes 77 and 77, and an electrodeposition insulating film is formed on the inner surface of the power supply through-hole 61.
- a voltage is applied using the signal electrode 78 as an anode and the power supply electrode 77 or the ground electrode 76 as a cathode, and an electrodeposited insulating film is formed on the inner surface of the signal through hole 62.
- an electrodeposition insulating film is not formed on the inner side surface of the grounding through hole 60.
- an electrodeposited insulating film is not formed on the inner side surface of the grounding through hole 60, and only the inner side surface of the power supply through hole 61 and the inner side surface of the signal through hole 62 are formed.
- An electrodeposition insulating film can be selectively formed.
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Abstract
Description
本発明は、半導体装置の製造方法及び半導体装置の製造装置に関する。
11 バルク層
12 デバイス層
20 Pウェル
22 接地線
30 Nウェル
32 電源線
40 入力ゲート
41 静電保護回路
43 信号線
60 接地用貫通孔
61 電源用貫通孔
62 信号用貫通孔
70 製造装置
71 テンプレート
72 制御部
73 接地用流通路
74 電源用流通路
75 信号用流通路
76 接地用電極
77 電源用電極
78 信号用電極
80~82 貫通電極
100 半導体装置
200 出力回路
201 信号線
210 信号用貫通孔
M めっき液
Claims (14)
- 半導体装置の製造方法であって、
厚み方向に貫通する貫通孔が複数形成された基板に対して、処理液を流通させる流通路を複数備え、且つ前記流通路に設けられた電極を複数備えたテンプレートを、前記複数の流通路と前記複数の貫通孔が対応するように配置するテンプレート配置工程と、
前記複数の流通路を介して前記複数の貫通孔内に処理液を供給する処理液供給工程と、
前記複数の電極のうち、一の電極を陽極とし、他の電極を陰極として電圧を印加し、基板に所定の処理を行う処理工程と、を有する。 - 請求項1に記載の半導体装置の製造方法において、
前記基板は、前記陽極と前記陰極を接続する回路部を有し、
前記処理工程において、前記陽極と前記陰極とには、前記回路部を介して電圧を印加する。 - 請求項2に記載の半導体装置の製造方法において、
前記基板は拡散領域を有し、
前記処理工程において、前記陽極と前記陰極とには、前記拡散領域を介して電圧を印加する。 - 請求項3に記載の半導体装置の製造方法において、
前記複数の貫通孔は、信号線に接続される貫通電極用の信号用貫通孔と、接地線に接続される貫通電極用の接地用貫通孔と、電源線に接続される貫通電極用の電源用貫通孔とを含み、
前記拡散領域は、前記信号線と、前記接地線又は前記電源線との間に接続された静電保護回路を構成し、
前記処理工程において、前記信号用貫通孔、前記接地用貫通孔、前記電源用貫通孔のうち、一の貫通孔に対応する電極を陽極とし、他の貫通孔に対応する電極を陰極として、前記静電保護回路を介して電圧を印加する。 - 請求項1に記載の半導体装置の製造方法において、
前記複数の貫通孔は、接地線に接続される貫通電極用の接地用貫通孔と、電源線に接続される貫通電極用の電源用貫通孔と、信号線に接続される貫通電極用の信号用貫通孔とを含み、
前記処理工程において、前記接地用貫通孔に対応する一の電極を陽極とし、前記電源用貫通孔又は信号用貫通孔に対応する他の電極を陰極として電圧を印加する。 - 請求項1に記載の半導体装置の製造方法において、
前記複数の貫通孔は、接地線に接続される貫通電極用の接地用貫通孔を複数含み、
前記処理工程において、一の前記接地用貫通孔に対応する一の電極を陽極とし、他の前記接地用貫通孔に対応する他の電極を陰極として電圧を印加する。 - 請求項1に記載の半導体装置の製造方法において、
前記複数の貫通孔は、電源線に接続される貫通電極用の電源用貫通孔を複数含み、
前記処理工程において、一の前記電源用貫通孔に対応する一の電極を陽極とし、他の前記電源用貫通孔に対応する他の電極を陰極として電圧を印加する。 - 半導体装置の製造装置であって、
処理液を流通させる流通路を複数備え、且つ前記流通路に設けられた電極を複数備えたテンプレートと、
厚み方向に貫通する貫通孔が複数形成された基板に対して、前記複数の流通路と前記複数の貫通孔が対応するように前記テンプレートを配置するテンプレート配置工程と、前記複数の流通路を介して前記複数の貫通孔内に処理液を供給する処理液供給工程と、前記複数の電極のうち、一の電極を陽極とし、他の電極を陰極として電圧を印加し、基板に所定の処理を行う処理工程と、を実行するように前記テンプレートを制御する制御部と、を有する。 - 請求項8に記載の半導体装置の製造装置において、
前記基板は、前記陽極と前記陰極を接続する回路部を有し、
前記制御部は、前記処理工程において、前記陽極と前記陰極とに、前記回路部を介して電圧を印加するように前記テンプレートを制御する。 - 請求項9に記載の半導体装置の製造装置において、
前記基板は拡散領域を有し、
前記制御部は、前記処理工程において、前記陽極と前記陰極とに、前記拡散領域を介して電圧を印加するように前記テンプレートを制御する。 - 請求項10に記載の半導体装置の製造装置において、
前記複数の貫通孔は、信号線に接続される貫通電極用の信号用貫通孔と、接地線に接続される貫通電極用の接地用貫通孔と、電源線に接続される貫通電極用の電源用貫通孔とを含み、
前記拡散領域は、前記信号線と、前記接地線又は前記電源線との間に接続された静電保護回路を構成し、
前記制御部は、前記処理工程において、前記信号用貫通孔、前記接地用貫通孔、前記電源用貫通孔のうち、一の貫通孔に対応する電極を陽極とし、他の貫通孔に対応する電極を陰極として、前記静電保護回路を介して電圧を印加するように前記テンプレートを制御する。 - 請求項8に記載の半導体装置の製造装置において、
前記複数の貫通孔は、接地線に接続される貫通電極用の接地用貫通孔と、電源線に接続される貫通電極用の電源用貫通孔と、信号線に接続される貫通電極用の信号用貫通孔とを含み、
前記制御部は、前記処理工程において、前記接地用貫通孔に対応する一の電極を陽極とし、前記電源用貫通孔又は信号用貫通孔に対応する他の電極を陰極として電圧を印加するように前記テンプレートを制御する。 - 請求項8に記載の半導体装置の製造装置において、
前記複数の貫通孔は、接地線に接続される貫通電極用の接地用貫通孔を複数含み、
前記制御部は、前記処理工程において、一の前記接地用貫通孔に対応する一の電極を陽極とし、他の前記接地用貫通孔に対応する他の電極を陰極として電圧を印加するように前記テンプレートを制御する。 - 請求項8に記載の半導体装置の製造装置において、
前記複数の貫通孔は、電源線に接続される貫通電極用の電源用貫通孔を複数含み、
前記制御部は、前記処理工程において、一の前記電源用貫通孔に対応する一の電極を陽極とし、他の前記電源用貫通孔に対応する他の電極を陰極として電圧を印加するように前記テンプレートを制御する。
半導体装置の製造方法及び製造装置
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JP2003253485A (ja) * | 2002-02-26 | 2003-09-10 | Seiko Epson Corp | 電気装置の製造方法 |
JP2005005331A (ja) * | 2003-06-09 | 2005-01-06 | Tokyo Electron Ltd | 検査方法及び検査装置 |
JP2005303319A (ja) * | 2004-04-13 | 2005-10-27 | Fei Co | 微細構造を改修するためのシステム |
WO2011158698A1 (ja) * | 2010-06-15 | 2011-12-22 | 東京エレクトロン株式会社 | 半導体装置の製造方法及び半導体装置 |
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JP2013041896A (ja) * | 2011-08-11 | 2013-02-28 | Tokyo Electron Ltd | 半導体装置の製造方法及び半導体装置 |
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WO2014188897A1 (ja) * | 2013-05-20 | 2014-11-27 | 東京エレクトロン株式会社 | 基板の処理方法及びテンプレート |
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