CN101853804A - Method for manufacturing semiconductor device - Google Patents

Method for manufacturing semiconductor device Download PDF

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Publication number
CN101853804A
CN101853804A CN200910130576A CN200910130576A CN101853804A CN 101853804 A CN101853804 A CN 101853804A CN 200910130576 A CN200910130576 A CN 200910130576A CN 200910130576 A CN200910130576 A CN 200910130576A CN 101853804 A CN101853804 A CN 101853804A
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holes
wafer
back side
semiconductor device
those
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CN101853804B (en
Inventor
刘安鸿
蔡豪殷
黄祥铭
李宜璋
何淑静
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BERMUDA CHIPMOS TECHNOLOGIES Co Ltd
Chipmos Technologies Inc
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BERMUDA CHIPMOS TECHNOLOGIES Co Ltd
Chipmos Technologies Inc
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Publication of CN101853804A publication Critical patent/CN101853804A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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    • Y02P80/30Reducing waste in manufacturing processes; Calculations of released waste quantities

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Abstract

The invention discloses a method for manufacturing a semiconductor device, comprising the following steps of: firstly, providing a wafer with an active surface and a back surface opposite to the active surface; then grinding the back surface of the wafer to obtain a thin wafer; forming a plurality of through holes with openings on the active surface and the back surface respectively on the thin wafer; forming insulating layers/conducting layers on the inner walls of the through holes and the active surface of the thin wafer; and filling the through holes with conductive material by an electrochemical mode. Making and filling through holes before thinning the wafer enables the through silicon via (TSV) technology to have shorter manufacturing time, higher reliability and lower material waste.

Description

The manufacture method of semiconductor device
Technical field
The invention relates to a kind of manufacture method of semiconductor device, particularly about the straight-through silicon wafer perforation of a kind of utilization (Through Silicon Via; TSV) manufacture method of the semiconductor device of technology.
Background technology
Three dimensional integrated circuits (3D IC) is to utilize advanced wafer stacking technology and be prepared from, and it is the integrated circuit (IC) that the chip of tool difference in functionality (chip) is stacked into the tool three-dimensional structure.Compared to the IC of two-dimensional structure, the technology of piling up of 3D IC not only can make 3D IC signaling path shorten, and more allows the running of 3D IC speed up, and the performance of tool low power consumption.Realize the technology of piling up of 3D IC, the TSV technology is that a new generation makes the chip that piles up can Interworking Technology.The TSV technology makes the signaling path of the chip chamber among the 3D IC shorter, so the running performance of 3D IC can be quicker, and owing to do not have the stacked die limited in number, so the TSV technology becomes one of key technology of present hot topic.
The manufacturing method thereof of traditional TSV technology at first forms a plurality of blind holes on wafer, then with electric conducting material blind hole is filled up, afterwards again with the wafer thinning, at last again through formation projection, cut crystal and pile up processing procedure such as joint.
The mode of traditional TSV fabrication techniques perforation is that the back side of grinding wafers makes its thinning, till blind hole becomes perforation.Usually need on the processing procedure degree of depth of blind hole is made into the degree of depth of last perforation for dark, have near the bottom of blind hole after the thinning partly and can be ground away, and electric conducting material wherein also can be ground away thereupon, so traditional TSV technology can cause the waste of electric conducting material, increases cost.
Moreover, will darker blind hole filling up the required processing procedure time needs longer, more uneconomical, and the speed of filling out is piled with the electric conducting material between its inwall place in the darker blind hole of control bottom, make blind hole get fully that plating is filled out and the unlikely processing procedure that is formed with the hollow part that is not filled difficulty, and its success rate is also not high.In addition, the blind hole of high-aspect-ratio (Aspect ratio) causes the bad problem of insulating barrier and metal seed layer deposition quality easily.
In sum, at present the TSV technology still has needs the success rate of long filling perforation time and filling perforation not high, adds the partially conductive material and is ground away and cause shortcoming such as waste.These shortcomings are still to be overcome, in order to the sustainable development of 3DIC technology.
Summary of the invention
One example of the present invention provides a kind of manufacture method of semiconductor device, utilizes this manufacture method can make straight-through silicon wafer perforation (Through Silicon Via; TSV) technology shortens its processing procedure time, improves the reliability of its manufacturing and reduces the waste of its electric conducting material.
One of the manufacture method of semiconductor device of the present invention is implemented example at first provides tool one active face to reach a wafer at a back side that is oppositely arranged with this active face.Then, the back side of grinding wafers is to obtain a chip thinning.Afterwards, on this chip thinning, form a plurality of respectively at the through hole that has opening on the active face and the back side.Then, form an insulating barrier in the active face of this chip thinning and the inwall of those through holes.Subsequently, on this insulating barrier, form a conductive layer.Then, fill up electric conducting material in those through holes in electrochemical mode.Afterwards, at least one opening of this through hole respectively, form projection.At last, cut this chip thinning, to form crystal grain independent of each other.
Another of the manufacture method of semiconductor device of the present invention implemented example at first provides tool one active face to reach a wafer at a back side that is oppositely arranged with this active face.Then, the back side of grinding wafers is to obtain a chip thinning.Afterwards, on this chip thinning, form a plurality of respectively at the through hole that has opening on the active face and the back side.Then, form a conductive layer in this back side or this active face.Then, fill up electric conducting material in those through holes in electrochemical mode.Afterwards, remove this conductive layer.Then, at least one opening of this through hole respectively, form projection.At last, cut this chip thinning, to form crystal grain independent of each other.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Figure 1A to Fig. 1 I is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration first embodiment of the invention;
Fig. 2 A to Fig. 2 H is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration second embodiment of the invention;
Fig. 3 A to Fig. 3 H is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration third embodiment of the invention; And
Fig. 4 A to Fig. 4 I is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration fourth embodiment of the invention.
The main element symbol description:
10 wafers
12 active faces
14 back sides
16 chip thinnings
18 through holes
20a, 20b opening
22 insulating barriers
24 inwalls
26 conductive layers
28 shield layers
30 electric conducting materials
32 projections
34 crystal grain
36 conductive carriers
Embodiment
Figure 1A to Fig. 1 I is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration first embodiment of the invention.Shown in Figure 1A, the manufacture method of the semiconductor device that first embodiment of the invention discloses at first provides a wafer 10.This wafer 10 comprises an active face 12, reaches a back side 14 that is oppositely arranged with this active face 12.Active face 12 is meant the surface that is loaded with integrated electronic circuit (Integratedcircuitry) on the wafer 10, and the back side 14 can be in fact the plane parallel with active face 12.Then, shown in Figure 1B, the back side 14 of wafer 10 is ground, make it be thinned to a predetermined thickness, form a chip thinning 16.This predetermined thickness can be between 10 microns to 200 microns, and preferably, this predetermined thickness is about 50 microns.Afterwards, shown in Fig. 1 C, on this chip thinning 16, form a plurality of through holes 18.Those through holes 18 all run through this chip thinning 16, and making respectively, this through hole 18 has two openings (20a and 20b) that lay respectively on the active face 12 and the back side 14.Form one of a plurality of through holes 18 optional autoreaction ion(ic) etchings of the mode on this chip thinning 16 (RIE), Deep Reaction ion(ic) etching (DRIE), laser (LASER) and wet etching methods such as (Wet etching).Then, shown in Fig. 1 D, form an insulating barrier 22 in the active face 12 of this chip thinning 16 and the inwall 24 of those through holes 18.Insulating barrier 22 provides and is electrically insulated, and it also can other tool resistance hinder the function of the filling metal penetration (Diffusion) of through hole 18 to chip thinning 16.
Subsequently, shown in Fig. 1 E, on insulating barrier 22, form a shield layer 28 and a conductive layer 26 in regular turn.This shield layer 28 can hinder barrier through hole 18 and fill metal penetrations to chip thinning 16, and this conductive layer 26 can be an electrochemical deposition processing procedure when electroplating the metal seed layer (Metal seed layer) of usefulness and being used for filling perforation.And for example shown in Fig. 1 F, fill up electric conducting material 30 in those through holes 18 in electrochemical mode, wherein electric conducting material 30 can be the metal materials such as alloy of copper or copper.Moreover shown in Fig. 1 G, respectively two openings of this through hole 18 (20a and 20b) are gone up and are formed corresponding and projection 32 that be connected with electric conducting material 30.In addition, shown in Fig. 1 H, cut this chip thinning 16, to form crystal grain 34 independent of each other.At last, a plurality of crystal grain 34 are piled up, wherein, the corresponding projection 32 phase contacts of neighbouring crystal grain 34.32 of the projections of phase contact can make the projection 32 of phase contact engage, and cause the crystal grain 34 that piles up to be engaged with each other through reflow (Reflow), form a stacked structure.The material of projection 32 can be the solder containing pb that mainly comprises tin (Sn), plumbous (Pb), silver materials such as (Ag), perhaps be lead-free solder, for example pure tin projection, Xi-Yin (Sn-Ag), Xi-Yin-bismuth (Sn-Ag-Bi), tin-silver-copper (Sn-Ag-Cu) or tin-silver-copper-bismuth materials such as (Sn-Ag-Cu-Bi) constitute.
Fig. 2 A to Fig. 2 H is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration second embodiment of the invention.Shown in Fig. 2 A, the manufacture method of the semiconductor device that second embodiment of the invention discloses at first provides a wafer 10.This wafer 10 comprises an active face 12, reaches a back side 14 that is oppositely arranged with this active face 12.Active face 12 is meant the surface that is loaded with integrated electronic circuit (Integratedcircuitry) on the wafer 10, and the back side 14 can be in fact the plane parallel with active face 12.Then, shown in Fig. 2 B, the back side 14 of wafer 10 is ground, make it be thinned to a predetermined thickness, form a chip thinning 16.The thickness of this chip thinning 16 can be between 10 microns to 200 microns, and preferably, this predetermined thickness is about 50 microns.Afterwards, shown in Fig. 2 C, on this chip thinning 16, form a plurality of through holes 18.Those through holes 18 all run through this chip thinning 16, and making respectively, this through hole 18 has two openings (20a and 20b) that lay respectively on the active face 12 and the back side 14.Form one of a plurality of through holes 18 optional autoreaction ion(ic) etchings of the mode on this chip thinning 16 (RIE), Deep Reaction ion(ic) etching (DRIE), laser (LASER) and wet etching methods such as (Wet etching).Then, shown in Fig. 2 D, the back side 14 of a conductive layer 36 in chip thinning 16 is set.In another embodiment, this conductive layer 36 is the active faces 12 that are arranged at chip thinning 16.Conductive layer 36 is the electrochemical deposition processing procedures when being used for filling perforation, and its material can be selected from one of copper (Cu), titanium (Ti), tungsten (W) or its alloy.
Subsequently, shown in Fig. 2 E, fill up electric conducting material 30 in those through holes 18, and after through hole 18 fills up, with etching solution this conductive layer 36 is removed again in electrochemical mode.Wherein electric conducting material 30 can be the metal materials such as alloy of copper or copper.And for example shown in Fig. 2 F, in respectively forming corresponding and projection 32 that be connected with electric conducting material 30 on two openings of this through hole 18 (20a and 20b).Moreover, shown in Fig. 2 G, cut this chip thinning 16, to form crystal grain 34 independent of each other.At last, shown in Fig. 2 H, a plurality of crystal grain 34 are piled up, wherein, the corresponding projection 32 phase contacts of neighbouring crystal grain 34.32 of the projections of phase contact can make the projection 32 of phase contact engage, and cause the crystal grain 34 that piles up to be engaged with each other through reflow (Reflow), form a stacked structure.
Fig. 3 A to Fig. 3 H is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration third embodiment of the invention.As shown in Figure 3A, the manufacture method of the semiconductor device of third embodiment of the invention announcement at first provides a wafer 10.This wafer 10 comprises an active face 12, reaches a back side 14 that is oppositely arranged with this active face 12.Active face 12 is meant the surface that is loaded with integrated electronic circuit (Integratedcircuitry) on the wafer 10, and the back side 14 can be in fact the plane parallel with active face 12.Then, shown in Fig. 3 B, the back side 14 of wafer 10 is ground, make it be thinned to a predetermined thickness, form a chip thinning 16.This predetermined thickness can be between 10 microns to 200 microns, and preferably, this predetermined thickness is about 50 microns.Afterwards, shown in Fig. 3 C, on this chip thinning 16, form a plurality of through holes 18.Those through holes 18 all run through this chip thinning 16, and making respectively, this through hole 18 has two openings (20a and 20b) that lay respectively on the active face 12 and the back side 14.Form one of a plurality of through holes 18 optional autoreaction ion(ic) etchings of the mode on this chip thinning 16 (RIE), Deep Reaction ion(ic) etching (DRIE), laser (LASER) and wet etching methods such as (Wet etching).Then, shown in Fig. 3 D, form an insulating barrier 22 in the active face 12 of this chip thinning 16 and the inwall 24 of those through holes 18.Insulating barrier 22 provide be electrically insulated and the filling metal penetration of tool resistance barrier through hole 18 to the function of chip thinning 16.
Subsequently, shown in Fig. 3 E, on insulating barrier 22, form a shield layer 28 and a conductive layer 26 in regular turn.This shield layer 28 can hinder barrier through hole 18 and fill metal penetrations to chip thinning 16, and this conductive layer 26 can be an electrochemical deposition processing procedure when electroplating the metal seed layer (Metal seed layer) of usefulness and being used for filling perforation.Again, shown in Fig. 3 F, fill up electric conducting material 30 in those through holes 18 in electrochemical mode, wherein electric conducting material 30 can be the metal materials such as alloy of copper or copper.Again, shown in Fig. 3 G, the opening 20a that is positioned at chip thinning 16 active faces 12 in this through hole 18 respectively goes up and forms the projection 32 that is connected with electric conducting material 30.In another embodiment, projection 32 is formed at this through hole 18 and is positioned at opening 20b on the back side 14.At last, utilize microetch (Micro-etching) processing procedure that the electric conducting material 30 that each through hole 18 is not provided with another opening 20b of projection 32 is carried out etching, make it form concavity down, shown in Fig. 3 H.After microetch (Micro-etching) processing procedure finishes, cut this chip thinning 16, to form independently of one another and can be engaged with each other, form the crystal grain 34 of a stacked structure.
Fig. 4 A to Fig. 4 I is a series of generalized section, and it is the manufacture method of the semiconductor device of illustration fourth embodiment of the invention.Shown in Fig. 4 A, the manufacture method of the semiconductor device that fourth embodiment of the invention discloses at first provides a wafer 10.This wafer 10 comprises an active face 12, reaches a back side 14 that is oppositely arranged with this active face 12.Active face 12 is meant the surface that is loaded with integrated electronic circuit (Integratedcircuitry) on the wafer 10, and the back side 14 can be in fact the plane parallel with active face 12.Then, shown in Fig. 4 B, the back side 14 of wafer 10 is ground, make it be thinned to a predetermined thickness, form a chip thinning 16.This predetermined thickness can be between 10 microns to 200 microns, and preferably, this predetermined thickness is about 50 microns.Afterwards, shown in Fig. 4 C, on this chip thinning 16, form a plurality of through holes 18.Those through holes 18 all run through this chip thinning 16, and making respectively, this through hole 18 has two openings (20a and 20b) that lay respectively on the active face 12 and the back side 14.Form one of a plurality of through holes 18 optional autoreaction ion(ic) etchings of the mode on this chip thinning 16 (RIE), Deep Reaction ion(ic) etching (DRIE), laser (LASER) and wet etching methods such as (Wet etching).Then, shown in Fig. 4 D, form an insulating barrier 22 in the active face 12 of this chip thinning 16 and the inwall 24 of those through holes 18.Insulating barrier 22 provides the function and the tool resistance that are electrically insulated to hinder the function of the filling metal penetration of through hole 18 to chip thinning 16.
Subsequently, shown in Fig. 4 E, on this insulating barrier 22, form a shield layer 28 and a conductive layer 26 in regular turn.This shield layer 28 can hinder barrier through hole 18 and fill metal penetrations to chip thinning 16, and this conductive layer 26 can be an electrochemical deposition processing procedure when electroplating the metal seed layer (Metal seed layer) of usefulness and being used for filling perforation.And for example shown in Fig. 4 F, fill up electric conducting material 30 in those through holes 18 in electrochemical mode, wherein electric conducting material 30 can be the metal materials such as alloy of copper or copper.Moreover shown in Fig. 4 G, respectively this through hole 18 is positioned on the opening 20a of active face 12, forms the projection 32 that is connected with electric conducting material 30 respectively.In another embodiment, projection 32 is formed at this through hole 18 and is positioned at opening 20b on the back side 14.In addition, shown in Fig. 4 H, etching is carried out at the back side 14 that utilizes microetch (Micro-etching) processing procedure will not to be provided with the chip thinning 16 of projection 32, and the electric conducting material of each through hole 18 is all exposed, and forms the cylindricality convex.At last, shown in Fig. 4 I, after microetch (Micro-etching) processing procedure finishes, cut this chip thinning 16,, form the crystal grain 34 of a stacked structure to form independently of one another and can be engaged with each other.
Technology contents of the present invention and technical characterstic disclose as above, yet the personage who is familiar with this technology still may be based on instruction of the present invention and announcement and done all replacement and modifications that does not deviate from spirit of the present invention.Therefore, protection scope of the present invention should be not limited to the content that embodiment discloses, and should comprise various do not deviate from replacement of the present invention and modifications, and is contained by appending claims.

Claims (14)

1. the manufacture method of a semiconductor device comprises the following step:
Provide a wafer, wherein this wafer tool one active face and a back side relative with this active face;
Grind this back side of this wafer, to obtain a chip thinning;
Form a plurality of through holes on this chip thinning, wherein respectively this through hole has two openings on this back side of laying respectively at this wafer and this active face;
Form an insulating barrier in this active face of this chip thinning and the inwall of those through holes;
On this insulating barrier, form a conductive layer;
Fill up electric conducting material in those through holes in electrochemical mode;
On at least one opening of those through holes, form projection; And
Cut this chip thinning, to form crystal grain independent of each other.
2. according to the manufacture method of the semiconductor device of claim 1, it is characterized in that, fill up electric conducting material after the step of those through holes, comprise one and carry out the step of microetch at the electric conducting material surface of through hole in electrochemical mode.
3. according to the manufacture method of the semiconductor device of claim 1, it is characterized in that, fill up electric conducting material after the step of those through holes, comprise one and carry out the step of microetch at this back side of wafer in electrochemical mode.
4. according to the manufacture method of the semiconductor device of claim 1, it is characterized in that, form the step of projection on this at least one opening of those through holes, those projections are these openings that are formed at this through hole on this active face of this chip thinning.
5. according to the manufacture method of the semiconductor device of claim 1, it is characterized in that, form the step of projection on this at least one opening of those through holes, this projection is this opening that is formed at this through hole on this back side of this chip thinning.
6. according to the manufacture method of the semiconductor device of claim 1, it is characterized in that, grind the step at this back side of this wafer, comprise the following step:
Grind this back side to one predetermined thickness of this wafer, to obtain this chip thinning, wherein this predetermined thickness is between 10 microns to 200 microns.
7. according to the manufacture method of the semiconductor device of claim 1, it is characterized in that the step that forms a conductive layer is contained in and forms a shield layer and a metal seed layer on this insulating barrier in regular turn.
8. the manufacture method of a semiconductor device comprises the following step:
Provide a wafer, wherein this wafer tool one active face and a back side relative with this active face;
Grind this back side of this wafer, to obtain a chip thinning;
Form a plurality of through holes on this chip thinning, wherein respectively this through hole has two openings on this back side of laying respectively at this wafer and this active face;
One conductive layer is set in this back side or this active face;
In electrochemical mode, fill up electric conducting material in those through holes;
Remove this conductive layer;
On at least one opening of those through holes, form projection; And
Cut this chip thinning, to form crystal grain independent of each other.
9. the manufacture method of semiconductor device according to Claim 8 is characterized in that, fills up electric conducting material in the step of those through holes in electrochemical mode, and this electric conducting material is copper or its alloy.
10. the manufacture method of semiconductor device according to Claim 8 is characterized in that, fills up electric conducting material after the step of those through holes in electrochemical mode, comprises one and carries out the step of microetch at the electric conducting material surface of through hole.
11. the manufacture method of semiconductor device according to Claim 8 is characterized in that, fills up electric conducting material after the step of those through holes in electrochemical mode, comprises one and carries out the step of microetch at this back side of wafer.
12. the manufacture method of semiconductor device according to Claim 8 is characterized in that, forms the step of projection on this at least one opening of those through holes, those projections are these openings that are formed at this through hole on this active face of this chip thinning.
13. the manufacture method of semiconductor device according to Claim 8 is characterized in that, forms the step of projection on this at least one opening of those through holes, this projection is this opening that is formed at this through hole on this back side of this chip thinning.
14. the manufacture method of semiconductor device according to Claim 8 is characterized in that, grinds the step at this back side of this wafer, comprises the following step:
Grind this back side to one predetermined thickness of this wafer, to obtain this chip thinning, wherein this predetermined thickness is between 10 microns to 200 microns.
CN2009101305769A 2009-04-03 2009-04-03 Method for manufacturing semiconductor device Expired - Fee Related CN101853804B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102376642A (en) * 2011-11-24 2012-03-14 上海华力微电子有限公司 Silicon through hole technology
CN102479733A (en) * 2010-11-26 2012-05-30 财团法人工业技术研究院 Mechanical strength test apparatus, method of manufacturing semiconductor device, and method of testing semiconductor device
CN102569251A (en) * 2012-02-22 2012-07-11 江苏物联网研究发展中心 Intermetallic compound filled vertical through-hole interconnecting structure for three-dimensional package and preparation method thereof
WO2022241662A1 (en) * 2021-05-19 2022-11-24 邱志威 Fabrication method for semiconductor ultra-thin stacked structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6214731B1 (en) * 1998-03-25 2001-04-10 Advanced Micro Devices, Inc. Copper metalization with improved electromigration resistance
US8119500B2 (en) * 2007-04-25 2012-02-21 Taiwan Semiconductor Manufacturing Company, Ltd. Wafer bonding
CN100570846C (en) * 2007-12-06 2009-12-16 清华大学 The implementation method of high, depth and width three-dimensional uprightness interconnect and three dimensional integrated circuits

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102479733A (en) * 2010-11-26 2012-05-30 财团法人工业技术研究院 Mechanical strength test apparatus, method of manufacturing semiconductor device, and method of testing semiconductor device
US8673658B2 (en) 2010-11-26 2014-03-18 Industrial Technology Research Institute Fabricating method of semiconductor device
CN102376642A (en) * 2011-11-24 2012-03-14 上海华力微电子有限公司 Silicon through hole technology
CN102569251A (en) * 2012-02-22 2012-07-11 江苏物联网研究发展中心 Intermetallic compound filled vertical through-hole interconnecting structure for three-dimensional package and preparation method thereof
CN102569251B (en) * 2012-02-22 2014-07-02 华进半导体封装先导技术研发中心有限公司 Intermetallic compound filled vertical through-hole interconnecting structure for three-dimensional package and preparation method thereof
WO2022241662A1 (en) * 2021-05-19 2022-11-24 邱志威 Fabrication method for semiconductor ultra-thin stacked structure

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