WO2013009064A2 - 가압유닛이 구비된 웨이퍼 비아 솔더 필링장치 및 이를 이용한 웨이퍼 비아 솔더 필링방법 - Google Patents
가압유닛이 구비된 웨이퍼 비아 솔더 필링장치 및 이를 이용한 웨이퍼 비아 솔더 필링방법 Download PDFInfo
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- WO2013009064A2 WO2013009064A2 PCT/KR2012/005440 KR2012005440W WO2013009064A2 WO 2013009064 A2 WO2013009064 A2 WO 2013009064A2 KR 2012005440 W KR2012005440 W KR 2012005440W WO 2013009064 A2 WO2013009064 A2 WO 2013009064A2
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- solder
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- molten solder
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- bath
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0094—Filling or covering plated through-holes or blind plated vias, e.g. for masking or for mechanical reinforcement
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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
- H01L21/70—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49165—Manufacturing circuit on or in base by forming conductive walled aperture in base
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- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5193—Electrical connector or terminal
Definitions
- the present invention relates to a wafer via solder peeling device for filling solder in vias formed in a wafer, and more particularly, to a wafer via solder peeling device having a pressurizing unit for pressing and moving a molten solder from the bottom to the top.
- the wafer may be provided in a state in which vias are formed only on one side of the upper and lower surfaces, or alternatively, may be provided in the form of upper and lower perforations.
- the wafer since the same peeling operation was performed regardless of the via type of the wafer, there was a problem that the variation in product quality was very large.
- An object of the present invention is to solve the above-mentioned conventional problems, and a wafer via solder peeling device having a pressurizing unit for preventing voids or cracks from occurring while the molten solder is not completely filled in the vias of the wafer, and using the same.
- the present invention provides a method for wafer via solder filling.
- a molten solder is accommodated therein, and an accommodating space having an open upper portion is formed, and one side discharges air from the accommodating space.
- Solder bath having a discharge portion, a fixing unit for fixing the wafer having a via formed on one surface on the receiving space to seal the receiving space and the molten solder contained in the solder bath by pressing from the bottom to the upper
- a pressurizing unit configured to fill the via with the molten solder.
- the pressurizing unit is formed in an area corresponding to the receiving space and is provided in the solder bath, and passes through a pressurizing board for transferring the molten solder contained in the solder bath and a lower portion of the solder bath to the pressurizing board. Connected, it may include a pressure cylinder for driving the pressure board up and down.
- At least one of the solder bath or the pressurizing unit may be provided with a heating unit for providing heat to the molten solder contained in the solder bath to prevent the molten solder is cured.
- the solder bath is accommodated therein, the solder bath is formed with an upper receiving space, the upper and lower penetrated
- the suction force is provided to the upper surface of the wafer on which the via is formed, and the fixing unit for fixing the wafer on the receiving space and the molten solder contained in the solder bath are pushed from the lower side to the upper side, and together with the suction force of the fixing unit.
- a pressurizing unit configured to fill the via with the molten solder.
- a porous plate may be further provided between the upper surface of the wafer and the fixing unit, having a plurality of through holes formed in the vertical direction and preventing the wafer from being bent by the suction force provided by the fixing unit.
- the pressurization unit is also provided in the solder bath and has a surface corresponding to the receiving space and pressurizes the pressure board through the lower portion of the pressurized board and the solder bath to transfer the molten solder contained in the solder bath.
- the board may include a pressure cylinder for driving the pressure board up and down.
- At least one of the solder bath or the pressurizing unit may be provided with a heating unit for providing heat to the molten solder contained in the solder bath to prevent the molten solder from curing.
- the molten solder is accommodated therein, an upper receiving opening space is formed, one side of the solder bath having a discharge portion for discharging the air of the receiving space And a fixing unit configured to fix the wafer having vias formed on one surface of the receiving space to seal the receiving space, and press the molten solder contained in the solder bath from below to move upward.
- a wafer via solder peeling method using a wafer via solder peeling device including a pressurizing unit for filling a solder, the fixing step of fixing the wafer on the receiving space with the fixing unit and sealing the receiving space; Ejection step and the pressurizing unit for discharging the air of the receiving space sealed through the discharge unit
- Sikkim moves upward by pressurizing the molten solder from the bottom and a filling step of so that the molten solder is filled in the via.
- another form of the wafer via solder peeling method for solving the above-described process includes a solder bath in which a molten solder is received and an upper receiving space is formed, and a top surface of the wafer on which top and bottom vias are formed.
- the suction unit provides a suction force, and fixes the wafer on the receiving space, and presses the molten solder contained in the solder bath from the bottom to the upper portion, thereby moving the molten solder to the via with the suction force of the fixing unit.
- the wafer via solder peeling apparatus and the wafer via solder peeling method using the pressure unit of the present invention for solving the above problems have the following effects.
- FIG. 1 is a cross-sectional view showing an overall view of a wafer via solder peeling apparatus equipped with a pressing unit according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view showing a state in which a wafer is fixed to a solder bath in a wafer via solder peeling device having a pressurizing unit according to a first embodiment of the present invention
- FIG. 3 is a cross-sectional view of a wafer via solder peeling device having a pressing unit according to a first embodiment of the present invention, in which a melting solder is filled in vias of a wafer as a melting unit is moved upward with the pressing unit;
- FIG. 4 is a cross-sectional view showing a state of a wafer manufactured using a wafer via solder peeling device equipped with a pressurizing unit according to a first embodiment of the present invention
- FIG. 5 is a cross-sectional view illustrating a porous plate provided between a top surface of a wafer and a fixing unit in a wafer via solder peeling device having a pressing unit according to a second embodiment of the present invention
- FIG. 6 is a cross-sectional view showing a wafer via solder peeling device having a pressurizing unit according to a third embodiment of the present invention, in which a wafer and a porous plate having upper and lower through-vias are fixed to a fixing unit;
- FIG. 7 is a cross-sectional view showing a state in which a wafer is fixed to a solder bath in a wafer via solder peeling device equipped with a pressing unit according to a third embodiment of the present invention.
- FIG. 8 is a cross-sectional view illustrating a wafer manufactured by using a wafer via solder peeling apparatus equipped with a pressing unit according to a third exemplary embodiment of the present invention.
- the wafer via solder peeling apparatus of the present invention includes a solder bath in which a molten solder is accommodated, a fixing unit for fixing a wafer, and a pressurizing unit for moving the molten solder from the bottom to the top.
- the solder bath may have an accommodation space with an upper opening therein, and accommodate the molten solder in the accommodation space.
- one side of the solder bath may be further provided with a discharge portion for discharging the air of the receiving space. This will be described in detail later.
- the fixing unit fixes the wafer on which the via is formed on the receiving space, and the fixing method may be variously formed. In general, a method of adsorbing the wafer by providing suction to the upper surface side of the wafer is most widely used. In addition, of course, the fixing unit can perform the transfer as well as the fixing of the wafer.
- the fixing unit needs to fix the wafer so that the receiving space is sealed. This will also be described later.
- the pressurizing unit is a component that pressurizes the molten solder contained in the solder bath from below to move the upper portion to fill the via with the molten solder.
- the molten solder may be pressurized to fill the via without gaps.
- the pressing unit may have a variety of forms.
- solder peeling methods may be used depending on which type of wafer a via is formed on only one surface, or a wafer having a via-through shape.
- the via when the via is formed on only one surface without penetrating the wafer, the via is exposed on both sides of the wafer through a separate wafer etching process after the peeling process. In this case, there is no need to perform an etching process of the wafer. That is, both will be made of the same type of wafer with the vias exposed up and down as a result. However, since the shapes are different from each other when the peeling process is performed, it is necessary to perform the appropriate solder peeling method.
- FIG. 1 an overall view of a wafer via solder peeling apparatus equipped with a pressing unit according to a first embodiment of the present invention is illustrated.
- a solder bath 10 including a side wall 12 and a bottom 14 is provided at a lower portion thereof, and a receiving space S having an upper opening is formed in the solder bath 10.
- the molten solder m is filled.
- the fixing unit 20 is positioned on the solder bath 10. Specifically, the fixing unit 20 is formed with a fixing portion 22 to which the wafer 40 is in contact, and the suction path 24 is provided in the center portion is provided with a suction force for adsorbing the wafer 40. That is, the fixing unit 20 may fix the wafer 40 to the fixing unit 22 by providing suction to the upper surface of the wafer 40.
- the wafer 40 has a form in which the via 42 is formed only on one surface, and when the wafer 40 is fixed to the fixing unit 20, the via 42 has a state facing downward. This is for the via 42 to be exposed to the molten solder m accommodated in the accommodation space S of the solder bath 10.
- the pressurizing unit 30 has a form penetrating through the solder bath 10 to effectively push up the molten solder m.
- the pressure unit 30 is formed in the area corresponding to the receiving space (S) is provided in the solder bath 10, the pressure board 32 for transferring the molten solder (m) accommodated in the solder bath 10 And a pressure cylinder 34 connected to the pressure board 32 through a lower portion of the solder bath 10 and for driving the pressure board 34 up and down.
- the pressure cylinder 34 is manually or automatically driven up and down to allow the pressure board 32 to move the molten solder (m) up and down.
- the circumferential portion may be provided with a sealing member having a sealing effect, such as rubber.
- the entirety of the pressure board 32 may be formed of a material having a sealing effect.
- At least one of the solder bath 10 and the pressurizing unit 30 may include a heating unit for providing heat to the molten solder m accommodated in the solder bath 10 to prevent the molten solder m from curing. It may be further provided. That is, the molten solder (m) is continuously heated to maintain the liquid state.
- a heating unit is provided on at least one of the side wall 12 of the solder bath 10 or the pressure board 32 of the pressure unit 30 in direct contact with the molten solder (m). desirable.
- one side of the solder bath 10 is provided with a discharge portion 15 for discharging the air in the accommodation space (S).
- the discharge part 15 is an essential component when the wafer 40 used in the present peeling process is the wafer 40 having the via 42 formed on only one surface thereof, and may be generally formed in the form of a valve or the like. have. This will be described together in the following description of the solder filling method.
- a fixing step of first fixing the wafer 40 on the receiving space S with the fixing unit 20 and then sealing the receiving space S is performed.
- the fixing step is illustrated in FIGS. 1 and 2, and referring to each of the drawings, the fixing unit 20 moves downward to absorb the wafer 40 to move the wafer 40 to the solder bath 10. It can be confirmed that the seated on the receiving space (S). In particular, at this time, the receiving space (S) must be closed after the effective filling can be made.
- a discharge step of discharging the air of the receiving space (S) sealed through the discharge unit 15 is performed.
- This discharge step is performed, as the receiving space (S) is sealed by the fixing step, it is difficult to move the pressurizing unit 30 due to the air located in the receiving space (S), within the via 42 This is because the air does not completely fill the molten solder m. That is, when the via 42 is formed only on one surface of the wafer 40 as in this embodiment, it is necessary to remove the air in the sealed receiving space S.
- the peeling step is performed to fill the via 42 with the molten solder m.
- This step is shown in Figure 3, referring to this, the pressure cylinder 34 is raised to the pressure board 32 to move the molten solder (m) to the upper, according to the pressure of the molten solder (m) vias ( 42) It can be seen that it is completely filled into.
- the space inside the via 42 also maintains a vacuum state by the discharge step, the melting solder m is filled in the via 42 with the pressurization of the pressurizing unit 30. You can get it.
- the wafer 40 filled with the molten solder m in each of the vias 42 is illustrated. As shown, the via 42 is filled with a molten solder m tight, which can then be cured to carry out the subsequent process.
- the second embodiment of the present invention is generally the same as the first embodiment described above, but a porous plate 50 is further provided between the upper surface of the wafer 40 and the fixing unit 20.
- the porous plate 50 has a plurality of through holes 52 penetrated in the vertical direction, and the wafer 40 may be prevented from bending by the suction force provided from the fixing unit 20. It is provided in contact with the upper surface. At this time, the remaining portion except the through hole 52 is formed of a support portion 54 capable of supporting the wafer 40.
- Such a porous plate 50 is preferably formed such that the area of the through hole 52 occupies a high ratio with respect to the entire area in order to sufficiently transfer the suction force provided from the fixing unit 20 to the wafer 40. .
- the support portion 54 needs to secure a certain level or more of strength. Therefore, the area ratio of the through hole 52 and the support portion 54 should be properly considered.
- the porous plate 50 is formed in a kind of honeycomb (Honeycomb) form has the advantage that it is possible to secure the supporting force while sufficiently transferring the suction force to the wafer (40).
- honeycomb honeycomb
- the third embodiment of the present invention is generally the same as the second embodiment described above, but the via 142 of the wafer 140 has a vertically penetrated shape, and also the solder bath 10 ), The discharge part 15 is not formed.
- the vias 142 are formed through the wafer 140, so that even if the wafer 140 is fixed on the receiving space S of the solder bath 10, the receiving space S is not sealed. Therefore, the solder peeling method using the solder peeling apparatus according to the present embodiment, unlike the first embodiment or the second embodiment, the discharge step after the fixing step is omitted.
- the suction force provided from the fixed unit 20 in addition to the pressure by the pressure unit 30 is a molten solder ( m), because the via 142 penetrates the top and bottom of the wafer 140.
- the suction force provided from the fixing unit 20 may work together to perform an effective peeling process.
- the width of the via 140 of the wafer 140 is about 20 ⁇ m, and the size of the via 140 is very fine. Therefore, it is difficult to effectively fill the molten solder (m) in the via 142 having a fine pitch as described above by any one of the pressing of the pressing unit 30 or the suction of the fixing unit 20.
- the present embodiment is also provided with a porous plate 52, wherein the width of the support portion 54 is about 300 ⁇ 400 ⁇ m, has a very large width than the via 142 of the wafer 140. Accordingly, a part of the via 142 may be located at the support 54 rather than the through hole 52, so that the suction force of the fixing unit 20 may not be reached.
- the width of the via 142 is about 20 ⁇ m, and the width of the support portion 54 is about 300 to 400 ⁇ m, and they have an extremely fine size. Therefore, as shown in the lower part of FIG. 6, since the contact surfaces thereof are irregularly formed when they are enlarged in a fine unit, there are substantially minute gaps. As a result, the suction force of the fixing unit 20 also affects the vias 142 contacting the support part 54 such that the molten solder m may be filled in the entire vias 142 of the wafer 140.
- FIG. 8 shows the wafer 140 filled with the molten solder m in the vias 142 through the respective steps. As shown, the molten solder m is filled in the top and bottom vias 42 without gaps, which can also be cured to carry out subsequent processes.
- the present invention has the advantage that the melted solder can be filled in the via of the wafer by the pressurization of the pressurization unit without gaps, and also the solder filling suitable according to the shape of the wafer. It can be seen that a method can be provided.
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Abstract
Description
Claims (9)
- 내부에 용융솔더가 수용되며, 상부가 개구된 수용공간이 형성되고, 일측에는 상기 수용공간의 공기를 배출시키는 배출부가 구비된 솔더배스;일면에 비아가 형성된 웨이퍼를 상기 수용공간 상에 고정시켜 상기 수용공간을 밀폐시키는 고정유닛; 및상기 솔더배스에 수용된 상기 용융솔더를 하부로부터 가압하여 상부로 이동시킴에 따라 상기 비아에 상기 용융솔더가 채워지도록 하는 가압유닛;을 포함하는 웨이퍼 비아 솔더 필링장치.
- 제1항에 있어서,상기 가압유닛은,상기 수용공간에 대응되는 면적으로 형성되어 상기 솔더배스 내에 구비되며, 상기 솔더배스에 수용된 상기 용융솔더를 이송시키는 가압보드; 및상기 솔더배스의 하부를 관통하여 상기 가압보드에 연결되고, 상기 가압보드를 상하 구동시키는 가압실린더;를 포함하는 웨이퍼 비아 솔더 필링장치.
- 제1항에 있어서,상기 솔더배스 또는 상기 가압유닛 중 적어도 어느 하나에는 상기 솔더배스에 수용된 용융솔더에 열을 제공하여 상기 용융솔더가 경화되는 것을 방지하는 가열부가 구비된 웨이퍼 비아 솔더 필링장치.
- 내부에 용융솔더가 수용되며, 상부가 개구된 수용공간이 형성된 솔더배스;상하 관통된 비아가 형성된 웨이퍼의 상면에 흡입력을 제공하며, 상기 웨이퍼를 상기 수용공간 상에 고정시키는 고정유닛; 및상기 솔더배스에 수용된 상기 용융솔더를 하부로부터 가압하여 상부로 이동시켜, 상기 고정유닛의 흡입력과 함께 상기 비아에 상기 용융솔더가 채워지도록 하는 가압유닛;을 포함하는 웨이퍼 비아 솔더 필링장치.
- 제4항에 있어서,상기 웨이퍼의 상면 및 상기 고정유닛 사이에는,상하 방향으로 관통 형성된 복수 개의 관통홀을 가지며, 상기 웨이퍼가 상기 고정유닛에서 제공되는 흡입력에 의해 휘어지는 것을 방지하는 다공질판이 더 구비된 웨이퍼 비아 솔더 필링장치.
- 제4항에 있어서,상기 가압유닛은,상기 솔더배스 내에 구비되며, 상기 수용공간에 대응되는 면적을 가지고 상기 솔더배스에 수용된 상기 용융솔더를 이송시키는 가압보드; 및상기 솔더배스의 하부를 관통하여 상기 가압보드에 연결되고, 상기 가압보드를 상하 구동시키는 가압실린더;를 포함하는 웨이퍼 비아 솔더 필링장치.
- 제4항에 있어서,상기 솔더배스 또는 상기 가압유닛 중 적어도 어느 하나에는 상기 솔더배스에 수용된 용융솔더에 열을 제공하여 상기 용융솔더가 경화되는 것을 방지하는 가열부가 구비된 웨이퍼 비아 솔더 필링장치.
- 내부에 용융솔더가 수용되며, 상부가 개구된 수용공간이 형성되고, 일측에는 상기 수용공간의 공기를 배출시키는 배출부가 구비된 솔더배스와, 일면에 비아가 형성된 웨이퍼를 상기 수용공간 상에 고정시켜 상기 수용공간을 밀폐시키는 고정유닛과, 상기 솔더배스에 수용된 상기 용융솔더를 하부로부터 가압하여 상부로 이동시킴에 따라 상기 비아에 상기 용융솔더가 채워지도록 하는 가압유닛을 포함하는 웨이퍼 비아 솔더 필링장치를 사용하는 웨이퍼 비아 솔더 필링방법에 있어서,상기 고정유닛으로 상기 웨이퍼를 상기 수용공간 상에 고정시키고, 상기 수용공간을 밀폐시키는 고정단계;상기 배출부를 통해 밀폐된 상기 수용공간의 공기를 배출시키는 배출단계; 및상기 가압유닛으로 상기 용융솔더를 하부로부터 가압하여 상부로 이동시킴에 따라 상기 용융솔더가 상기 비아에 채워지도록 하는 필링단계;를 포함하는 웨이퍼 비아 솔더 필링방법.
- 내부에 용융솔더가 수용되며, 상부가 개구된 수용공간이 형성된 솔더배스와, 상하 관통된 비아가 형성된 웨이퍼의 상면에 흡입력을 제공하며, 상기 웨이퍼를 상기 수용공간 상에 고정시키는 고정유닛과, 상기 솔더배스에 수용된 상기 용융솔더를 하부로부터 가압하여 상부로 이동시켜, 상기 고정유닛의 흡입력과 함께 상기 비아에 상기 용융솔더가 채워지도록 하는 가압유닛을 포함하는 웨이퍼 비아 솔더 필링장치를 사용하는 웨이퍼 비아 솔더 필링방법에 있어서,상기 고정유닛으로 상기 웨이퍼를 상기 수용공간 상에 고정시키는 고정단계; 및상기 가압유닛으로 상기 용융솔더를 하부로부터 가압하여 상부로 이동시킴과 동시에, 상기 웨이퍼의 상면에 흡입력을 제공하여 상기 용융솔더가 상기 비아에 채워지도록 하는 필링단계;를 포함하는 웨이퍼 비아 솔더 필링방법.
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JP2014520119A JP5826928B2 (ja) | 2011-07-12 | 2012-07-10 | 加圧ユニットを備えるウエハービアはんだ注入装置およびこれを用いたウエハービアはんだ注入方法 |
US14/129,076 US9603254B2 (en) | 2011-07-12 | 2012-07-10 | Apparatus for filling a wafer via with solder |
US15/423,602 US10115635B2 (en) | 2011-07-12 | 2017-02-03 | Method for filling a wafer via with solder |
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US15/423,602 Division US10115635B2 (en) | 2011-07-12 | 2017-02-03 | Method for filling a wafer via with solder |
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WO2021067330A2 (en) * | 2019-09-30 | 2021-04-08 | Samtec, Inc. | Electrically conductive vias and methods for producing same |
US10593562B2 (en) | 2015-04-02 | 2020-03-17 | Samtec, Inc. | Method for creating through-connected vias and conductors on a substrate |
KR101802378B1 (ko) * | 2016-06-30 | 2017-11-29 | 한국생산기술연구원 | 솔더범프 제조용 지그, 플립칩 접합방법 및 이에 의하여 형성된 플립칩 |
CN107914059A (zh) * | 2016-10-11 | 2018-04-17 | 张跃 | 一种电加热钎焊装置 |
TW202212498A (zh) | 2016-11-18 | 2022-04-01 | 美商山姆科技公司 | 填充基板的穿通孔之填充材料及方法 |
TWI769376B (zh) | 2018-03-30 | 2022-07-01 | 美商山姆科技公司 | 導電性通孔及其製造方法 |
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JP5826928B2 (ja) | 2015-12-02 |
US9603254B2 (en) | 2017-03-21 |
WO2013009064A3 (ko) | 2013-03-14 |
KR101168719B1 (ko) | 2012-07-30 |
US20140123488A1 (en) | 2014-05-08 |
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