WO2011087003A1 - 3次元実装方法および装置 - Google Patents
3次元実装方法および装置 Download PDFInfo
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- WO2011087003A1 WO2011087003A1 PCT/JP2011/050304 JP2011050304W WO2011087003A1 WO 2011087003 A1 WO2011087003 A1 WO 2011087003A1 JP 2011050304 W JP2011050304 W JP 2011050304W WO 2011087003 A1 WO2011087003 A1 WO 2011087003A1
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004806 packaging method and process Methods 0.000 title abstract 5
- 238000010030 laminating Methods 0.000 abstract description 4
- 235000012431 wafers Nutrition 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
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Definitions
- the present invention relates to a three-dimensional mounting method and apparatus for sequentially stacking and bonding objects to be bonded such as semiconductor elements in the vertical direction.
- a COC method Chip On Chip
- COW method Chip On Wafer
- a wafer there is a WOW method (Wafer On Wafer) in which wafers are sequentially stacked.
- the upper layer bonded object is sequentially laminated and bonded in a state in which the position of the electrode of the upper bonded object is aligned with the position of the electrode (including the bump) of the lower bonded object.
- the position of the lower object for example, the position of the electrode or the position of the alignment mark
- the position of the upper layer object to be stacked on the lower layer object to be recognized is aligned with the position of the lower object to be recognized by the camera), and the position of the upper layer object to be stacked is recognized from above by the recognition means.
- the upper layer bonded object sequentially laminated on the lowermost layer bonded object usually has one surface formed on the circuit surface and an electrode penetrating from the circuit surface to the back surface. After this circuit surface is the lower surface side, the electrodes are aligned with respect to the object to be bonded located below, and then laminated and bonded. The position of the bonded upper layer object is recognized from the back side opposite to the circuit surface, and the position of the upper layer object is further aligned and bonded based on the recognized position. Therefore, in the middle of stacking a plurality of upper layer bonded objects, the position of the stacked upper layer bonded objects must always be read and recognized from the back side.
- the circuit surface side is usually clean, and it is in a state where the position of the electrode and the position of the alignment mark for alignment can be clearly recognized.
- the mark shape or the like is usually not clearly imprinted or printed, and the mark is very small and is extremely difficult to read. Therefore, in the method of performing position recognition from the back side, recognition errors are likely to occur, and recognition errors such as alignment marks directly lead to deterioration in mounting accuracy. Further, in the case where mounting is performed based on the mark reference on the back surface of the upper layer bonded object, the mark errors are sequentially accumulated, so that the mounting shift with respect to the lowermost layer increases according to the number of layers.
- the object of the present invention is to focus on the problems in the conventional position recognition as described above, and to reliably and easily align the upper layer objects to be sequentially stacked with high accuracy.
- An object of the present invention is to provide a three-dimensional mounting method and apparatus capable of improving the mounting accuracy in a three-dimensional assembly state.
- the three-dimensional mounting method according to the present invention is a state in which a plurality of upper layer bonded objects having through electrodes are placed on the lowermost layer bonded objects having electrodes and the positions of the electrodes are aligned.
- the three-dimensional mounting method of sequentially stacking the position of alignment of the lowermost layer bonded object is recognized, and the electrodes sequentially position all upper layer bonded objects based on the recognized alignment position of the lowermost layer bonded object. It consists of the method characterized by sequentially laminating the upper layer objects to be joined at the predetermined positions while sequentially matching the predetermined positions to be connected.
- the alignment position of the lowermost layer object is recognized, and all the upper layer objects sequentially stacked on the basis of the position of the lowermost layer object.
- the alignment of the joint is performed sequentially. Therefore, no matter how many layers of the upper layer bonded object are stacked, the upper layer bonded object (the upper surface of the upper layer bonded object (the back surface opposite to the circuit surface) side) does not become a reference for alignment, There is no need to recognize the position on the hard-to-read surface.
- the alignment position of the upper-layer object to be aligned only needs to be recognized on the lower surface side (circuit surface side) and can be recognized with high accuracy.
- the first recognition means recognizes (recognizes from above) and stores the alignment position of the lowermost layer bonded object, and stores a plurality of upper layers.
- the second recognition means sequentially recognizes the alignment position of the object to be bonded (recognized from below), and the upper layer object whose alignment position has been recognized is stored in the alignment of the lowermost layer object to be stored. Stacking may be performed sequentially while aligning with the predetermined position sequentially with reference to the use position.
- the first recognizing unit and the second recognizing unit may be configured as a two-field recognizing unit having a visual field in the vertical direction, or may be configured as separate recognizing units.
- the alignment position of each object to be bonded it is possible to recognize the position of the electrode and the outer position of the object to be bonded, but formed in a specific shape (for example, a cross shape, etc.) If the mark given for alignment is recognized, it can contribute to the improvement of recognition accuracy.
- the alignment position of the lowermost layer bonded object is recognized by an alignment mark attached to the upper surface of the lowermost layer bonded object, and the alignment position of the plurality of upper layer bonded objects is determined for each upper layer bonded object. It can be recognized by an alignment mark attached to the lower surface of the object.
- each upper layer bonded object since the height of each upper layer bonded object sequentially changes as the stacking progresses, the upper layer bonded object held by the head or the like is stacked on the lowermost layer bonded object or the lowermost layer bonded object.
- the alignment position of the upper layer bonded object is preferably recognized by, for example, the second recognizing means when the upper layer bonded object is on the mounting position.
- the position for alignment of the upper layer bonded object (for example, the position of the upper layer bonded object with respect to the head holding the upper layer bonded object) is recognized in the middle of conveying the upper layer bonded object to the mounting position, and the Implementation can also be performed based on the recognition position. In this case, it is possible to eliminate the advance / retreat operation of the recognition means for recognizing the alignment position of the upper-layer workpiece at the mounting position, so that the time required for a series of processes from conveyance to mounting can be reduced. is there.
- an object to be bonded all forms and all kinds of objects to be bonded may be used as long as a plurality of upper layer bonded objects having through electrodes are three-dimensionally mounted on a lowermost layer bonded object having electrodes.
- An object can be used, and typically, an object to be bonded is made of a chip or a wafer. In this case, any of the above-described COC method, COW method, and WOW method can be applied.
- the present invention also provides a three-dimensional mounting apparatus. That is, the three-dimensional mounting apparatus according to the present invention is a three-dimensional mounting in which a plurality of upper layer objects having through electrodes are sequentially stacked on the lowermost object having electrodes.
- first recognition means for recognizing an alignment position of the lowermost layer bonded object held on a stage, a head for holding the upper layer bonded object sequentially stacked, and the lowermost layer bonded object Is recognized by the first recognizing means
- the second recognizing means for recognizing the alignment position of the upper layer object held by the head, and the first recognizing means.
- the position of all the upper layer objects to be recognized by the second recognizing means with respect to the alignment position of the lowermost object to be bonded is sequentially adjusted to a predetermined position where the electrodes are sequentially connected, position A mounting control means for stacking the Align obtained upper joining target sequence consists of those characterized by having a.
- the three-dimensional mounting apparatus includes a storage unit that stores the alignment position of the lowermost layer object recognized by the first recognition unit, and the mounting control unit sequentially uses the second recognition unit.
- the upper layer object to be recognized is sequentially stacked with the position of the recognized upper layer object being sequentially aligned with the predetermined position with reference to the alignment position of the lowermost layer object stored in the storage means. it can.
- the alignment position of the lowermost layer bonded object is recognized by an alignment mark attached to the upper surface of the lowermost layer bonded object
- the alignment positions of the plurality of upper layer bonded objects are It can be configured to be recognized by an alignment mark attached to the lower surface of the object.
- the mounting control means for each upper layer object to be sequentially stacked, the upper layer object to be mounted is changed so that the mounting height with respect to the position of the lowermost layer object in the stacking direction or the reference position corresponding thereto is changed. It is preferable to be configured to control the position in the stacking height direction.
- the second recognizing means preferably comprises means for recognizing the upper layer bonded object when the head holding the upper layer bonded object is on the mounting position.
- a typical object to be bonded can be a chip or a wafer.
- the three-dimensional mounting method and apparatus since all upper layer objects are sequentially aligned and stacked based on the recognition position of the lowermost layer object, each upper layer that is difficult to read as in the prior art. It becomes unnecessary to read the upper surface of the object to be joined, and high-precision positioning can be easily performed, so that the mounting accuracy can be greatly improved and the reliability of high-precision three-dimensional mounting can be improved.
- FIG. 1 shows a three-dimensional mounting apparatus according to an embodiment of the present invention.
- the three-dimensional mounting apparatus 1 includes a plurality of upper-layer chips 5 as upper-layer objects to be bonded, each having a through-electrode 4, and electrodes 2, 4, on a lower-layer chip 3 as a lower-layer object having electrodes 2. It consists of what laminates
- the three-dimensional mounting apparatus 1 recognizes the alignment position (for example, the position of the alignment mark) of the lowermost layer chip 3 held on the stage 6 (for example, held by suction).
- First recognition means and second recognition means for recognizing the alignment position (for example, the position of the alignment mark) of the upper chip 5 held by the head 7 (for example, the pressure / heating head).
- the first recognizing unit and the second recognizing unit are configured as a two-field camera 8 as a two-field recognizing unit having a field of view in two directions.
- the two-field camera 8 is provided between the lowermost lower layer chip 3 and the upper upper layer chip 5, that is, with respect to the mounting position of the upper layer chip 5, so that it can advance and retreat as necessary.
- the three-dimensional mounting apparatus 1 has moving means capable of controlling the relative position between the head 7 holding the upper layer chips 5 stacked sequentially and the stage 6 holding the lowermost layer chip 3.
- the upper layer chip 5 is aligned with the lowermost layer chip 3 by the control of the moving means.
- the position on the stage 6 side is controlled for this alignment, but the position on the head 7 side may be controlled, and the positions on both sides are controlled. You may comprise.
- the three-dimensional mounting apparatus 1 penetrates through the positions of all the upper layer chips 5 recognized by the second recognition unit with reference to the alignment position of the lowermost layer chip 3 recognized by the first recognition unit.
- a mounting control means 9 is provided for sequentially stacking the upper layer chip 5 aligned with the predetermined position on the lower layer while sequentially aligning with the predetermined position where the electrodes 4 are sequentially connected.
- the three-dimensional mounting is performed as shown in FIG. 3, for example.
- the alignment position (position of the alignment mark) of the lowermost chip 3 held on the stage 6 is recognized by the first recognition means (a camera having a field of view below the two-field camera 8), and the position. Information is stored in storage means in the mounting control means 9. Based on the alignment position information of the lowermost layer chip 3 stored in the storage means, the alignment of all the upper layer chips 5 that are sequentially stacked is sequentially performed.
- the alignment position of the upper chip 5 (the position of the alignment mark) is recognized by the second recognition means (a camera having a field of view above the two-field camera 8), and this recognition position information is stored in the storage means.
- the position of the upper layer chip 5 is controlled such that the positions of the electrodes 2 and 4 are matched with the alignment position information of the lowermost layer chip 3. Actually, since the position on the stage 6 side is controlled in this embodiment, the position control of the stage 6 is performed based on both position information.
- the upper layer chip 5 that is the uppermost layer does not necessarily have to be the through electrode 4 similar to the intermediate layer.
- the position recognition by the second recognition means (the camera having a field of view above the two-field camera 8) of the upper layer chip 5 is performed from the chip lower surface side at the mounting position.
- second recognition means having a configuration different from the above (for example, a camera having a field of view only upward) while the upper layer chip 5 held by the head 7 is being transported to the mounting position. It is also possible to recognize the alignment position in 11) and align the position of the lowermost layer chip 3 at the mounting position with reference to the recognized position information. In this way, since the reading time of the upper layer chip 5 can be reduced, the time of the entire three-dimensional mounting process having a series of operations can be shortened.
- the three-dimensional mounting method and apparatus according to the present invention can be applied to any three-dimensional mounting in which workpieces having electrodes are stacked in the vertical direction.
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- Engineering & Computer Science (AREA)
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- Power Engineering (AREA)
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Wire Bonding (AREA)
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WO2013187292A1 (ja) * | 2012-06-11 | 2013-12-19 | 株式会社新川 | ボンディング装置および半導体装置の製造方法 |
JP2014187220A (ja) * | 2013-03-25 | 2014-10-02 | Toshiba Corp | 半導体装置の製造方法 |
WO2015079991A1 (ja) * | 2013-11-27 | 2015-06-04 | 東レエンジニアリング株式会社 | 3次元実装方法および3次元実装装置 |
CN110383446A (zh) * | 2017-03-16 | 2019-10-25 | Ev 集团 E·索尔纳有限责任公司 | 用于接合至少三个衬底的方法 |
JP2020136389A (ja) * | 2019-02-15 | 2020-08-31 | 日本放送協会 | 積層型半導体集積回路およびその製造方法 |
CN110383446B (zh) * | 2017-03-16 | 2024-07-16 | Ev集团E·索尔纳有限责任公司 | 用于接合至少三个衬底的方法 |
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KR101630249B1 (ko) | 2012-06-11 | 2016-06-14 | 가부시키가이샤 신가와 | 본딩 장치 및 반도체 장치의 제조 방법 |
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JP2020511784A (ja) * | 2017-03-16 | 2020-04-16 | エーファウ・グループ・エー・タルナー・ゲーエムベーハー | 少なくとも3枚の基板を接合するための方法 |
JP7177781B2 (ja) | 2017-03-16 | 2022-11-24 | エーファウ・グループ・エー・タルナー・ゲーエムベーハー | 少なくとも3枚の基板を接合するための方法 |
CN110383446B (zh) * | 2017-03-16 | 2024-07-16 | Ev集团E·索尔纳有限责任公司 | 用于接合至少三个衬底的方法 |
JP2020136389A (ja) * | 2019-02-15 | 2020-08-31 | 日本放送協会 | 積層型半導体集積回路およびその製造方法 |
JP7253402B2 (ja) | 2019-02-15 | 2023-04-06 | 日本放送協会 | 積層型半導体集積回路およびその製造方法 |
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JPWO2011087003A1 (ja) | 2013-05-20 |
KR20120118458A (ko) | 2012-10-26 |
TW201140739A (en) | 2011-11-16 |
KR101802173B1 (ko) | 2017-11-28 |
TWI506717B (zh) | 2015-11-01 |
JP5984394B2 (ja) | 2016-09-06 |
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