WO2008032566A1 - Semiconductor device and method for manufacturing the same - Google Patents
Semiconductor device and method for manufacturing the same Download PDFInfo
- Publication number
- WO2008032566A1 WO2008032566A1 PCT/JP2007/066707 JP2007066707W WO2008032566A1 WO 2008032566 A1 WO2008032566 A1 WO 2008032566A1 JP 2007066707 W JP2007066707 W JP 2007066707W WO 2008032566 A1 WO2008032566 A1 WO 2008032566A1
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- WO
- WIPO (PCT)
- Prior art keywords
- bump electrode
- semiconductor substrate
- layer
- semiconductor device
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H10W70/093—
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- H10W72/012—
Definitions
- the present invention relates to a semiconductor device and a manufacturing method thereof, and particularly relates to bump electrode formation.
- CSP Chip Size Package
- a BGA (Ball Grid Array) type semiconductor device is known as a kind of CSP.
- This BGA type semiconductor device is provided with a plurality of ball-shaped bump electrodes that are electrically connected to pad electrodes provided on a semiconductor substrate.
- each bump electrode is mounted on a wiring pattern on the printed circuit board to electrically connect the semiconductor chip and the external circuit mounted on the printed circuit board. Connected to.
- FIGS. 14 and 15 are cross-sectional views shown in the order of the manufacturing steps.
- a semiconductor substrate 101 having a pad electrode 100 formed on its surface is prepared.
- a printing mask 10 3 having an opening 100 2 is disposed on the semiconductor substrate 100 1 only on the region where the bump electrode is to be formed, that is, the region where the pad electrode 100 is formed.
- solder 104 is applied as a bump electrode material onto the printing mask 10 3, and a metal or resin squeeze 10 5 is moved in the direction of the arrow. As the squeegee 105 moves, the solder 104 is applied onto the pad electrode 100 through each opening 10 2.
- the printing mask 10 3 is removed, and the solder 104 is heated, melted and recrystallized, so that the bump electrode 10 6 as shown in FIG. 15 is formed on the pad electrode 100. Made.
- this semiconductor device has a structure in which a support body 1 1 2 (for example, glass) is attached to a semiconductor substrate 1 1 0 on which a device element (not shown) is formed via an adhesive layer 1 1 1. Board).
- the semiconductor substrate 1 1 0 is selectively removed, and along the outer periphery of the semiconductor substrate 1 1 0 Pad electrodes 1 1 3 connected to are formed.
- a metal layer 1 14 (for example, a nickel layer or a gold layer) is formed on the surface of the pad electrode 1 1 3 on the semiconductor substrate 1 1 0 side.
- an insulating passivation film 115 that covers the surface side of the semiconductor substrate 110 and at least a part of the other surface of the pad electrode 113 is formed.
- a protective layer 1 16 having an opening is formed on the metal layer 114 so as to cover the back surface and side surfaces of the semiconductor substrate 110.
- a step 1 1 7 having the thickness of the semiconductor substrate 1 1 0 is formed between the printing mask 1 0 3 and the metal layer 1 1 4. .
- the bump electrode material has fluidity. Therefore, it comes into contact with the material of another adjacent region, and the bump electrodes come into contact with each other.
- a main object of the present invention is to provide a technique capable of easily forming a desired bump electrode when a bump electrode is to be formed directly on a portion lowered by a step.
- the method for manufacturing a semiconductor device includes a step of preparing a semiconductor substrate having a device element formed on a surface, and bonding a support on the surface of the semiconductor substrate, and selectively removing the semiconductor substrate.
- the method includes a step of forming a separation layer for separating each of the formation regions, and a step of forming a bump electrode in each of the bump electrode formation regions.
- the method of manufacturing a semiconductor device of the present invention includes a step of preparing a semiconductor substrate having a device element formed on a surface, and attaching a support on the surface of the semiconductor substrate, and selectively removing the support A step of exposing the bump electrode formation region, a step of forming a separation layer that surrounds at least a part of the side surface side of the bump electrode formation region and separates each bump electrode formation region, and Forming a bump electrode in each of the bump electrode formation regions.
- the semiconductor device of the present invention includes a semiconductor substrate having a device element formed on a surface, a pad electrode electrically connected to the device element and formed at a stepped portion, and the pad electrode. It is characterized by comprising a bump electrode formed thereon and a separation layer that surrounds at least a part of the side surface of the bump electrode and separates the individual bump electrodes.
- FIG. 1 is a cross-sectional view for explaining a semiconductor device and a manufacturing method thereof according to the first embodiment of the present invention, and FIG.
- FIG. 2 is a semiconductor device and a manufacturing method thereof according to the first embodiment of the present invention.
- FIG. 3 is a plan view for explaining the semiconductor device and the manufacturing method thereof according to the first embodiment of the present invention
- FIG. 4 is according to the first embodiment of the present invention.
- FIG. 5 is a cross-sectional view illustrating a semiconductor device and a manufacturing method thereof
- FIG. 5 is a cross-sectional view illustrating a semiconductor device and a manufacturing method thereof according to the first embodiment of the present invention
- FIG. FIG. 7 is a plan view for explaining the semiconductor device and the manufacturing method thereof according to the first embodiment
- FIG. 7 is a sectional view for explaining the semiconductor device and the manufacturing method according to the first embodiment of the present invention.
- FIG. 8 illustrates the semiconductor device and the manufacturing method thereof according to the first embodiment of the present invention.
- FIG. 9 is a cross-sectional view illustrating a semiconductor device and a manufacturing method thereof according to the first embodiment of the present invention.
- FIG. 10 is a cross-sectional view according to the second embodiment of the present invention.
- FIG. 11 is a cross-sectional view illustrating a semiconductor device and a manufacturing method thereof according to a second embodiment of the present invention, and
- FIG. 12 is a cross-sectional view illustrating the semiconductor device and the manufacturing method thereof.
- FIG. 13 is a cross-sectional view illustrating a semiconductor device and a manufacturing method thereof according to a second embodiment of the invention, and FIG.
- FIG. 13 is a cross-sectional view illustrating a semiconductor device and a manufacturing method thereof according to the second embodiment of the present invention.
- Fig. 14 is a cross-sectional view illustrating a conventional method for manufacturing a semiconductor device
- Fig. 15 is a cross-sectional view illustrating a method for manufacturing a conventional semiconductor device
- Fig. 16 is to be solved by the invention. It is sectional drawing explaining the subject to be taken. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 to FIG. 9 are cross-sectional views or plan views respectively shown in the order of manufacturing steps.
- silicon (S i) with device elements 1 for example, light receiving elements such as CCDs, CMOS sensors, infrared sensors, etc., light emitting elements, or other semiconductor elements
- device elements 1 for example, light receiving elements such as CCDs, CMOS sensors, infrared sensors, etc., light emitting elements, or other semiconductor elements
- the semiconductor substrate 2 is, for example, 3 0 0 ⁇ ⁇ ! It has a thickness of ⁇ 700 ⁇ m.
- a first insulating film 3 for example, a silicon oxide film formed by a thermal oxidation method, a CVD method, or the like
- a first insulating film 3 for example, a silicon oxide film formed by a thermal oxidation method, a CVD method, or the like
- a metal layer such as aluminum (A 1), aluminum alloy, or copper (C u) is formed by sputtering method or other film forming method, and then the metal layer is formed using a resist layer (not shown) as a mask. Etching is performed to form the pad electrode 4 on the first insulating film 3 to a thickness of 1 ⁇ m, for example.
- the pad electrode 4 is an external connection electrode that is electrically connected to the device element 1 and its peripheral elements via a wiring (not shown). In FIG. 1, the pad electrodes 4 are disposed on both sides of the device element 1, but the position is not limited, and the pad electrode 4 may be disposed on the device element 1.
- a passivation film 5 (for example, a silicon nitride film formed by a CVD method) covering a part or all of the pad electrode 4 is formed on the surface of the semiconductor substrate 2.
- a passivation film 5 is formed so as to cover a part of the pad electrode 4.
- a support 7 is bonded onto the surface of the semiconductor substrate 2 including the pad electrode 4 via an adhesive layer 6 such as epoxy resin, polyimide (for example, photosensitive polyimide), resist, or acrylic.
- an adhesive layer 6 such as epoxy resin, polyimide (for example, photosensitive polyimide), resist, or acrylic.
- the support 7 may be, for example, a film-like protective tape, a rigid substrate such as glass, quartz, ceramic, or metal, or may be made of a resin. Also, It is preferable that the support 7 is a rigid substrate in order to firmly support the semiconductor substrate 2 to be thinned and to automate conveyance without human intervention.
- the support 7 has a function of supporting the semiconductor substrate 2 and protecting the element surface.
- the support 7 is made of a transparent or translucent material and has a property of transmitting light.
- back grinding is performed on the back surface of the semiconductor substrate 2 using a back surface grinding device (grinder), and the thickness of the semiconductor substrate 2 is reduced to a predetermined thickness (for example, about 50 to 200 / m).
- the grinding process may be an etching process, or a combination of a grinder and an etching process. Depending on the application and specifications of the final product and the initial thickness of the prepared semiconductor substrate 2, the grinding process may not be necessary.
- a predetermined region corresponding to the pad electrode 4 in the semiconductor substrate 2 is selectively etched from the back side of the semiconductor substrate 2 to partially expose the first insulating film 3. Let Hereinafter, this exposed portion is referred to as an opening 8.
- FIG. 3 is a schematic plan view seen from below (semiconductor substrate 2 side), and Fig. 2 shows the X-X line of (a), (b) in Fig. 3. It corresponds to the cross-sectional view along the line.
- the semiconductor substrate 2 can be etched into a substantially rectangular shape narrower than the width of the support 7. Further, as shown in FIG. 3 (b), the outer periphery of the semiconductor substrate 2 can be configured to be concave and convex by etching only the region where the pad electrode 4 is formed. In the latter case, the overlapping area of the semiconductor substrate 2 and the support 7 is larger, and the semiconductor substrate 2 remains near the outer periphery of the support 7. Therefore, semiconductor From the viewpoint of improving the support strength of the support 7 with respect to the body substrate 2, the latter configuration is preferable.
- the support 7 can be prevented from warping due to the difference in thermal expansion coefficient between the semiconductor substrate 2 and the support 7, so that the semiconductor device can be prevented from cracking and peeling. It is also possible to design the semiconductor substrate 2 in a shape different from the planar shape shown in FIGS. 3 (a) and (b).
- the side wall of the semiconductor substrate 2 is etched obliquely so that the lateral width of the semiconductor substrate 2 increases toward the surface side, but the width of the semiconductor substrate 2 is constant and the side wall is supported. It can also be etched so that it is perpendicular to the main surface of the body 7.
- the first insulating film 3 is selectively etched using the semiconductor substrate 2 as a mask.
- the first insulating film 3 in the region from the end of the semiconductor substrate 2 to the predetermined dicing line is removed, and one surface of the pad electrode 4 (on the semiconductor substrate 2 side) is formed at the bottom of the opening 8. Surface) is exposed.
- the etching can also form a resist layer and use the resist layer as a mask.
- the metal layer 9 is a layer in which, for example, a nickel (N i) layer and a gold (A u) layer are sequentially stacked. These metals are sequentially sputtered using the resist layer as a mask, and then the resist layer is removed. It can be formed by a method or a plating method.
- the material of the metal layer 9 can be changed as appropriate.
- a titanium (T i) layer, a tungsten (W) layer, a copper (C u) layer, a tin (S n) layer, or the like may be used.
- the metal layer 9 has a function of protecting the pad electrode 4 by interposing an electrical connection between the pad electrode 4 and a bump electrode 19 described later, the material The quality is not particularly limited, and may be a single layer or a laminate thereof. Examples of laminated structures are nickel layer gold layer, titanium layer / nickel layer copper layer, titanium layer z nickel vanadium layer copper layer, and the like.
- a protective layer 10 having an opening at a position corresponding to the pad electrode 4 and the metal layer 9 is formed with a thickness of, for example, 10 ⁇ m.
- the opening is formed on the surface of the pad electrode 4 on the semiconductor substrate 2 side.
- the protective layer 10 is formed as follows. First, an organic material such as a polyimide resin or solder resist is applied to the entire surface by a coating / coating method, followed by heat treatment (pre-baking). Next, the applied organic material is exposed and developed to form an opening that exposes the surface of the metal layer 9, and then subjected to heat treatment (post-bake), so that the pad electrode 4 and A protective layer 10 having an opening at a position corresponding to the metal layer 9 is obtained.
- pre-baking heat treatment
- post-bake heat treatment
- the separation layer 12 is, for example, a resist layer or an epoxy resin layer having the same height as the semiconductor substrate 2, and is formed by applying a material, exposing / developing the material, and further performing a heat treatment.
- the material of the separation layer 12 is not particularly limited, but is preferably made of a photosensitive resin from the viewpoint that exposure / development processing is possible. Further, the same material as that of the protective layer 10 may be used. Further, the method of forming the separation layer 12 is not limited to the above exposure / development processing. For example, a so-called dispensing method in which the material of the separation layer 12 is directly applied along the formation region of the separation layer 12 may be used.
- Each bump electrode formation region 11 is surrounded by a protective layer 10 covering the side surface of the semiconductor substrate 2 and a separation layer 12. That is, the separation layer 12 surrounds at least a part of the side surface side of the bump electrode formation region 11.
- Each bump electrode formation area 1 1 1 There is no limitation on the design of the separation layer 1 2 (height, width, cross-sectional shape, planar shape, etc.).
- the width of the separation layer 12 is formed so as to increase toward the support 7 side, but the width is constant and its side wall is perpendicular to the main surface of the support 7. It can also be formed.
- the planar shape of the semiconductor substrate 2 and the planar shape of the separation layer 12 can be changed according to the arrangement of the bump electrode formation region 11. is there. Further, in FIGS. 6A and 6B, the separation layer 12 is continuously formed in each bump electrode formation region 11.
- the design of the separation layer 12 is not limited.
- the separation layer 12 can be individually associated with each bump electrode formation region 11.
- FIG. 5 corresponds to a cross-sectional view taken along line Y—Y in FIGS. 6A and 6B, and illustration of the metal layer 9 and the protective layer 10 is omitted. It is also possible to form the separation layer 12 before the protective layer 10 is formed.
- the cubic shapes and volumes of the individual bump electrode formation regions 11 surrounded by the semiconductor substrate 2 and the separation layer 12 are all equal. This is because the bump electrode material is applied later to each bump electrode formation region 11, and variations in the size and height of the bump electrode to be finally formed can be suppressed.
- a printing mask 16 having an opening 15 corresponding to the position of the bump electrode formation region 11 is disposed above the semiconductor substrate 2.
- the printing mask 16 is made of a metal such as stainless steel and has a thickness of about 50 to 20 ⁇ 0 m.
- the shape of the opening 15 may be rectangular or circular, and is not particularly limited.
- paste solder 17 as a bump electrode material is applied on the printing mask 16.
- a metal or resin squeeze 1 8 mask for printing 1 Touch the top of 6 and move it at a constant speed in the direction of the arrow.
- Solder 17 is embedded in each opening 15 by squeegee 18 and then applied onto metal layer 9. Note that the amount of solder 17 embedded in each opening 15 is uniform.
- the printing mask 16 is removed.
- the printing mask 16 is used.
- the individual bump electrode forming regions are already separated by the separation layer 12, so that the printing mask 16 is not used.
- a bump electrode material For example, as shown in FIG. 8, solder 17 is applied to the upper surface of the protective layer 10, and the squeegee 18 is brought into contact with the uppermost layer (in this embodiment, the protective layer 10 and the separation layer 1 2). By moving in the direction, the solder 17 is applied directly to each bump electrode formation region 11. In this case, since a printing mask is not used, manufacturing costs are reduced and productivity is improved. It is preferable to use a printing mask 16 from the viewpoint of appropriately adjusting the amount to be applied.
- solder 17 can be applied by a so-called dispense method in which a conductive material is directly applied to each bump electrode formation region 11. By using the dispense method, solder 17 is applied with high accuracy.
- a bump electrode 19 as shown in FIG. 9 is formed on the metal layer 9 through a process (reflow process) in which the applied solder 17 is heated and melted and then recrystallized.
- the bump electrode 19 corresponds to the position of the pad electrode 4 and the metal layer 9 and is formed along the outer periphery of the support 7.
- the wafer is cut along a predetermined dicing line DL and divided into individual semiconductor devices 20.
- a method of dividing into individual semiconductor devices 20 there are a dicing method, an etching method, a laser cutting method, and the like.
- formation of the separation layer 1 2 is performed.
- Dicing line DL is set at the position
- the support 7 may remain attached to the semiconductor substrate 2, but the support 7 may be peeled off before and after the dicing process.
- the completed semiconductor device 20 is mounted on another device in which external electrodes are patterned.
- the separation layer 12 surrounding each bump electrode formation region is formed, the supplied bump electrode material can be prevented from flowing to other parts. Therefore, contact between the bump electrodes can be prevented.
- the formation of the separation layer 12 makes it possible to form bump electrodes without using a printing mask. Therefore, the manufacturing cost can be reduced and a desired bump electrode can be easily formed. In addition, productivity is high because a large number of bump electrodes can be formed at one time.
- the periphery of the bump electrode 19 is surrounded by a semiconductor substrate 2 on which a separation layer 12 and a protective layer 10 are formed. That is, the bump electrode 19 is exposed from the back surface side (the formation side of the bump electrode 19) of the semiconductor device 20, but is not exposed from the side surface side. Therefore, intrusion of corrosive substances and mechanical damage (for example, load during mounting) are reduced.
- FIGS. 10 to 13 are cross-sectional views showing the semiconductor device according to the second embodiment of the present invention in the order of manufacturing steps.
- the semiconductor substrate 2 is selectively removed.
- the support 7 is selectively removed.
- a semiconductor device having a device element 1 formed on its surface is shown.
- the body substrate 2 is prepared, and the first insulating film 3, the pad electrode 4, and the passivation film 5 are formed by the manufacturing processes already described.
- a support 7 is bonded to the surface of the semiconductor substrate 2 including the pad electrode 4 via an adhesive layer 6.
- back grinding is performed as necessary to reduce the thickness of the semiconductor substrate 2 to a predetermined thickness. The above steps are the same as those in the first embodiment already described.
- a photoresist layer 30 is selectively formed on the surface of the support 7.
- the photoresist layer 30 is formed by opening two bump electrode forming regions 31 adjacent to each other across the dicing line DL and a position corresponding to a continuous region therebetween.
- the support 7 is selectively etched using the photoresist layer 30 as a mask.
- the two conductive terminal forming regions 31 facing each other across the dicing line DL and the continuous region therebetween are removed as one unit, and an opening 32 penetrating the support 7 is formed.
- This selective etching can be performed, for example, by dry etching or dip etching using hydrofluoric acid (H F) as an etching solution.
- a part of the pad electrode 4 is exposed by selectively etching the adhesive layer 6 exposed at the bottom of the opening 32. Note that the etching of the support 7 and the etching of the adhesive layer 6 may be performed by a single etching. Next, a metal layer 9 is formed on the pad electrode 4 exposed at the bottom of the opening 32.
- separation layers 12 for separating individual bump electrode formation regions 31 are formed by the same manufacturing method as in the first embodiment. In the present embodiment, it is formed on the passivation film 5 between the two bump electrode formation regions. By forming the separation layer 12, each bump electrode formation region 31 is surrounded by the side surface of the support 7 and the separation layer 12. The subsequent steps are the same as those in the first embodiment.
- the bump electrode material is applied by using a printing mask and a squeegee in combination, or without using the printing mask. Alternatively, apply bump electrode material using the dispense method.
- the bump electrode 19 as shown in FIG. 12 is formed on the metal layer 9 by heating, melting and recrystallization. The bump electrode 19 corresponds to the position of the pad electrode 4 and the metal layer 9 and is formed along the outer periphery of the support 7.
- the separation layer 12 since the separation layer 12 is formed, it is possible to suppress the material of the supplied bump electrode from flowing to other portions. Therefore, contact between the bump electrodes can be prevented, and as a result, the reliability of the semiconductor device is improved. Further, by forming the separation layer 12, it is possible to form bump electrodes without using a printing mask. Therefore, the manufacturing cost can be reduced and the desired bump electrode can be formed easily and efficiently.
- the present invention is not limited to the above-described embodiment, and modifications can be made without departing from the scope of the invention.
- the position of the dicing line DL can be changed according to the position of the separation layer 12 and the structure of the target semiconductor device. Therefore, it is possible to set the dicing line DL in a portion not overlapping with the separation layer 12 so that the separation layer 12 does not remain in the structure of the semiconductor device after dicing. It is also possible to include a step of removing the separation layer 12 separately from the dicing step after the bump electrode is formed, so that the separation layer 12 does not remain in the structure of the semiconductor device.
- a wiring layer for example, an aluminum layer formed by sputtering
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- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008534285A JP5238929B2 (ja) | 2006-09-11 | 2007-08-22 | 半導体装置及びその製造方法 |
| US12/440,864 US7919353B2 (en) | 2006-09-11 | 2007-08-22 | Semiconductor device and manufacturing method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-245197 | 2006-09-11 | ||
| JP2006245197 | 2006-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008032566A1 true WO2008032566A1 (en) | 2008-03-20 |
Family
ID=39183629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/066707 Ceased WO2008032566A1 (en) | 2006-09-11 | 2007-08-22 | Semiconductor device and method for manufacturing the same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7919353B2 (ja) |
| JP (1) | JP5238929B2 (ja) |
| WO (1) | WO2008032566A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7919353B2 (en) | 2006-09-11 | 2011-04-05 | Sanyo Electric Co., Ltd. | Semiconductor device and manufacturing method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010103300A (ja) * | 2008-10-23 | 2010-05-06 | Sanyo Electric Co Ltd | 半導体装置及びその製造方法 |
| JP5621334B2 (ja) * | 2010-06-10 | 2014-11-12 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08204322A (ja) * | 1995-01-26 | 1996-08-09 | Ibiden Co Ltd | バンプの形成方法 |
| JP2004319676A (ja) * | 2003-04-15 | 2004-11-11 | Harima Chem Inc | はんだ析出方法およびはんだバンプ形成方法 |
| JP2006173198A (ja) * | 2004-12-13 | 2006-06-29 | Sanyo Electric Co Ltd | 半導体装置及びその製造方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL123207A0 (en) | 1998-02-06 | 1998-09-24 | Shellcase Ltd | Integrated circuit device |
| US7285867B2 (en) * | 2002-11-08 | 2007-10-23 | Casio Computer Co., Ltd. | Wiring structure on semiconductor substrate and method of fabricating the same |
| US7810740B2 (en) * | 2002-11-18 | 2010-10-12 | Hamamatsu Photonics K.K. | Back illuminated photodiode array, manufacturing method and semiconductor device thereof |
| JP4145301B2 (ja) * | 2003-01-15 | 2008-09-03 | 富士通株式会社 | 半導体装置及び三次元実装半導体装置 |
| JP2004314601A (ja) | 2003-03-31 | 2004-11-11 | Sanyo Electric Co Ltd | メタルマスク及びそれを用いた無鉛ソルダペースト印刷方法 |
| JP2007165696A (ja) * | 2005-12-15 | 2007-06-28 | Sanyo Electric Co Ltd | 半導体装置及びその製造方法 |
| TW200737506A (en) * | 2006-03-07 | 2007-10-01 | Sanyo Electric Co | Semiconductor device and manufacturing method of the same |
| WO2008032566A1 (en) | 2006-09-11 | 2008-03-20 | Sanyo Electric Co., Ltd. | Semiconductor device and method for manufacturing the same |
-
2007
- 2007-08-22 WO PCT/JP2007/066707 patent/WO2008032566A1/ja not_active Ceased
- 2007-08-22 JP JP2008534285A patent/JP5238929B2/ja not_active Expired - Fee Related
- 2007-08-22 US US12/440,864 patent/US7919353B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08204322A (ja) * | 1995-01-26 | 1996-08-09 | Ibiden Co Ltd | バンプの形成方法 |
| JP2004319676A (ja) * | 2003-04-15 | 2004-11-11 | Harima Chem Inc | はんだ析出方法およびはんだバンプ形成方法 |
| JP2006173198A (ja) * | 2004-12-13 | 2006-06-29 | Sanyo Electric Co Ltd | 半導体装置及びその製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7919353B2 (en) | 2006-09-11 | 2011-04-05 | Sanyo Electric Co., Ltd. | Semiconductor device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US7919353B2 (en) | 2011-04-05 |
| US20100038742A1 (en) | 2010-02-18 |
| JPWO2008032566A1 (ja) | 2010-01-21 |
| JP5238929B2 (ja) | 2013-07-17 |
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