WO2005051057A1 - 回路基板 - Google Patents
回路基板 Download PDFInfo
- Publication number
- WO2005051057A1 WO2005051057A1 PCT/JP2004/017276 JP2004017276W WO2005051057A1 WO 2005051057 A1 WO2005051057 A1 WO 2005051057A1 JP 2004017276 W JP2004017276 W JP 2004017276W WO 2005051057 A1 WO2005051057 A1 WO 2005051057A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal piece
- circuit board
- solder layer
- welding
- gap
- Prior art date
Links
Classifications
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
-
- 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
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4007—Surface contacts, e.g. bumps
- H05K3/4015—Surface contacts, e.g. bumps using auxiliary conductive elements, e.g. pieces of metal foil, metallic spheres
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/328—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by welding
-
- 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
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10954—Other details of electrical connections
- H05K2201/10962—Component not directly connected to the PCB
-
- 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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/222—Completing of printed circuits by adding non-printed jumper connections
Definitions
- the present invention relates to a circuit board.
- the present invention relates to a circuit board including an insulating substrate and a metal piece provided on the substrate. An external connection terminal is welded to the metal piece.
- FIG. 7 of the present application shows a conventional circuit board (see Patent Document 1 below).
- the illustrated circuit board X is used, for example, in a battery pack for a mobile phone.
- a protection circuit for preventing overdischarge of the rechargeable battery incorporated in the battery pack and overcharge of the battery is formed.
- the circuit board X includes an insulating substrate 91 and a pair of rectangular metal plates 93 provided on the substrate 91.
- a plurality of electronic components 92 are mounted on the board 91.
- a wiring pattern is formed on the substrate 91, and connects the electronic component 92 and the metal plate 93 to each other.
- a conductive strip 95 is welded to each metal plate 93. More specifically, one end of the conductive strip 95 is welded to the metal plate 93, and the remaining portion is laterally protruded from the substrate 91. The protruding portion is used as a connection terminal for the rechargeable battery after being bent into a predetermined shape. As shown in FIG. 8 of the present application, welding of the conductive strip 95 can be performed using a welding device Y provided with two welding rods 97 (see Patent Document 2 below).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-208788
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-144047
- a metal plate 93 is joined via a solder layer 96 to a pad 94a which is a part of the wiring pattern.
- the solder layer 96 covers the entire lower surface of the metal plate 93.
- an object of the present invention is to provide a circuit board that can appropriately suppress the scattering of solder during welding as described above.
- the present invention takes the following technical measures.
- the circuit board provided by the present invention is joined to an insulating board, a conductive pad formed on the board, and a nod via a solder layer, and a member to be welded.
- a metal piece including a welded portion.
- a gap is formed between the welded portion of the metal piece and the substrate, and the welded portion and the solder layer are separated from each other via the gap.
- the welding target portion and the solder layer do not contact each other due to the gap. .
- These voids exhibit an effect (heat insulation effect) of suppressing the transmission of heat when the welding target member is welded to the metal plate to the solder layer. Therefore, it is possible to reduce the possibility that the solder layer is melted due to heat during welding, and to prevent the melted solder and solder from scattering and adhering to surrounding electronic components. As a result, It is possible to suppress the occurrence of malfunctions such as erroneous operation and breakage of components.
- since it is not necessary to seal the above electronic components with resin for the purpose of protecting the above electronic components it is possible to avoid an increase in the number of work steps and the number of components and to suppress an increase in manufacturing costs. be able to.
- a recess is formed in the metal piece, and the recess forms at least a part of the void.
- the metal piece includes two ends folded in a common direction, and a space between the ends forms at least a part of the gap.
- the metal piece includes two ends and a central portion having a step with respect to the ends, and the recess is formed between the two ends.
- the concave portion is formed by etching the metal piece.
- the metal piece is a flat pipe having a hollow portion, and the hollow portion is the void.
- the solder layer is divided into a plurality of regions separated from each other, and the space between the plurality of regions forms at least a part of the gap.
- the pad is divided into a plurality of portions corresponding to a plurality of regions of the solder layer.
- FIG. 1 is a perspective view showing a circuit board according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view of a principal part along the line II-II in FIG. 1.
- FIG. 3 is a fragmentary cross-sectional view showing a circuit board according to a second embodiment of the present invention.
- FIG. 4 is a fragmentary cross-sectional view showing a circuit board according to a third embodiment of the present invention.
- FIG. 5 is a sectional view of a main part showing a circuit board according to a fourth embodiment of the present invention.
- FIG. 6 is a sectional view of a main part showing a circuit board according to a fifth embodiment of the present invention.
- FIG. 7 is a perspective view showing a conventional circuit board.
- FIG. 8 is a perspective view showing an example of a welding device.
- FIG. 9 is a cross-sectional view of a main part along the line IX-IX in FIG. 7.
- FIG. 1 shows a circuit board according to a first embodiment of the present invention.
- the illustrated circuit board A1 is used, for example, as one unit constituting a battery pack (not shown) of a mobile phone.
- the circuit board A1 is used as a component constituting a protection circuit for preventing overdischarge and overcharge of a rechargeable battery (not shown) incorporated in the battery pack.
- the circuit board A1 includes an insulating substrate 1 and a pair of metal pieces 3.
- a plurality of electronic components 2 are mounted on the board 1.
- the substrate 1 is made of, for example, glass epoxy resin and has a rectangular shape in plan view.
- the plurality of electronic components 2 are for configuring the above protection circuit.
- the wiring pattern 4 is formed on the upper surface of the substrate 1.
- the pair of metal pieces 3 is, for example, a rectangular plate made of nickel. As will be described later, a terminal member 5 is welded to the upper surface of each metal piece 3. As shown in FIG. 2, both end portions of each metal piece 3 are folded back to the lower surface side, and a pair of folded portions 3b separated from each other are formed.
- Each metal piece 3 is connected via a solder layer 6 to a pair of pads 4 a formed as a part of the wiring pattern 4.
- the pair of pads 4a are separated from each other, and each pad 4a is joined to a corresponding folded portion 3b.
- the distance between the two pads 4a is the same or substantially the same as the distance between the two folded portions 3b.
- the central portion of the metal piece 3 and the substrate 1 are separated from each other via a gap 7.
- an elongated rectangular terminal member 5 is welded to the upper surface of each metal piece 3.
- the terminal member 5 is pressed against the metal piece 3 by the welding rod 8 of the welding device B. More specifically, a part of the terminal member 5 (the part where the welding rod 8 contacts) is pressed against a part of the metal piece 3 (hereinafter, referred to as “welding target part 3a”) by the welding rod 8.
- welding target part 3a a part of the terminal member 5
- the metal piece 3 and the terminal member 5 are welded by supplying electricity from the welding rod 8.
- a part of the terminal member 5 is laterally protruding from the substrate 1 as shown in FIG.
- the structure is such that the welding target portion 3 a does not directly contact the solder layer 6, so that heat during welding is not easily transmitted to the solder layer 6. Therefore, the possibility that the solder layer 6 melts at the time of welding is reduced, and the possibility that the molten solder is scattered is reduced. For this reason, it is possible to appropriately prevent malfunction and breakage of the electronic component, which has been a problem in the prior art.
- the pair of solder layers 6 is not provided immediately below the welding target portion 3a (see FIG. 2). Therefore, even when the metal piece 3 is pressed by the welding rod 8 and deforms so as to bend downward, the welding target portion 3a does not contact the solder layer 6.
- Such a configuration is suitable for suppressing the melting of the solder layer 6 (and the scattering of the molten solder).
- the pair of pads 4a is arranged to be separated from each other, the pair of solder layers 6 can be easily formed in a state of being separated from each other. If the configuration is such that the metal piece 3 is joined to one nod, unlike the above form, the following inconvenience may occur.
- the metal piece 3 can be prepared as follows. First, a rectangular metal plate extending in one direction is prepared. Then, two side portions extending in the longitudinal direction of the metal plate are folded back to the lower surface side. Thereafter, the metal plate is cut at a constant pitch in the longitudinal direction (each cutting line extends at right angles to the longitudinal direction of the metal plate). In this way, a plurality of metal pieces 3 can be efficiently manufactured from one metal plate.
- FIGS. 3 to 6 show a circuit board according to another embodiment of the present invention. Note that, in these drawings, the same or similar elements as those in the first embodiment are denoted by the same reference numerals.
- FIG. 3 shows a circuit board A2 according to a second embodiment of the present invention.
- the metal piece 3 used for the circuit board A2 includes a flat central portion 3a and two flat ends 3d sandwiching the central portion.
- the metal piece 3 is bent at a predetermined position, so that the central part 3a is located at a position higher than the end part 3d.
- the metal piece 3 has a recess 3c located between the two ends 3d.
- the central portion 3a and each end 3d are connected by a connecting portion 3e.
- the central portion (welding target portion) 3a is separated from the substrate 1 via the air gap 7, and the solder is provided immediately below the central portion 3a. There is no layer 6. Therefore, it is possible to appropriately prevent the solder layer 6 from melting or scattering due to heat at the time of welding.
- a metal piece 3 can be easily produced by, for example, press calorie using a punch and a die. Further, it is possible to obtain a plurality of metal pieces 3 from one elongated metal plate.
- FIG. 4 shows a circuit board A3 according to a third embodiment of the present invention.
- the recess 3c is formed by etching away a part of the lower surface side of the metal piece 3. Further, in this embodiment, the metal piece 3 is joined to one pad 4a via one solder layer 6. The solder layer 6 covers the entire upper surface of the pad 4a.
- the concave portion 3c at an accurate position and shape by etching. Further, similarly to the above-described embodiment, the production of the metal piece 3 can be performed efficiently. Specifically, the long rectangular metal plate is etched to form a single groove extending in the longitudinal direction of the metal plate. Thereafter, the metal plate is cut at a predetermined pitch in the longitudinal direction, whereby a plurality of metal pieces 3 are obtained.
- the solder layer 6 is not divided into a plurality of spaced regions. However, even in such a configuration, a gap 7 exists between the welding target portion 3a and the solder layer 6. Therefore, it is possible to prevent the solder layer 6 from being unduly melted by heat during welding.
- FIG. 5 shows a circuit board A4 according to a fourth embodiment of the present invention.
- the circuit board A4 includes a flat pipe-shaped metal piece 3, and has a configuration in which a hollow portion of the metal piece 3 is a void 7.
- the upper part of the metal piece 3 is the welding target part 3a to which the terminal member 5 is welded, and the lower part of the metal piece 3 is joined to the pad 4a by the solder layer 6 under the partial force. This is the soldering part 3f used.
- the welding target portion 3a and the soldering portion 3f can have substantially the same size.
- the welding area between the terminal member 5 and the metal piece 3 and the bonding area between the metal piece 3 and the pad 4a can be increased, and the bonding strength can be increased.
- the gap 7 can be made as large as the size of the metal piece 3 in a plan view, which is advantageous for enhancing the heat insulating effect against heat at the time of welding.
- the production of such a metal piece 3 can be performed by pressing a pipe of an appropriate length in the radial direction to flatten the pipe, and then cutting the pipe at a predetermined pitch in the longitudinal direction.
- FIG. 6 shows a circuit board A5 according to a fifth embodiment of the present invention.
- the circuit board A5 includes a flat metal piece 3, which is joined to a pair of pads 4a by a pair of solder layers 6. Even with such a configuration, since the gap 7 is formed between the welding target portion 3a and the substrate 1, it is possible to prevent the solder layer 6 from being unduly melted by heat during welding. Further, the metal piece 3 shown in FIG. 6 does not need to be bent or etched, so that it is easy to manufacture and is advantageous in reducing the manufacturing cost.
- circuit board according to the present invention is not limited to the above-described embodiment, and various design changes can be made.
- the concave portion formed in the metal piece 3 is not limited to a groove shape extending in one direction, and may be a hole shape surrounded by the periphery.
- a configuration may be employed in which substantially the entire periphery of the outer edge is folded so as to surround the center of the metal piece. This is the same when forming the concave portion by press working or etching.
- the circuit board according to the present invention is not limited to a circuit board having a function as a protection circuit for a battery pack.
- the welding target member to be welded to the metal piece is not limited to an elongated rectangular terminal member, but may be another member, for example, an electrical connection pin.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Battery Mounting, Suspending (AREA)
- Mounting Components In General For Electric Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/580,157 US7439625B2 (en) | 2003-11-21 | 2004-11-19 | Circuit board |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-392676 | 2003-11-21 | ||
JP2003392676A JP3776907B2 (ja) | 2003-11-21 | 2003-11-21 | 回路基板 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005051057A1 true WO2005051057A1 (ja) | 2005-06-02 |
Family
ID=34616460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017276 WO2005051057A1 (ja) | 2003-11-21 | 2004-11-19 | 回路基板 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7439625B2 (ja) |
JP (1) | JP3776907B2 (ja) |
KR (1) | KR100820517B1 (ja) |
CN (1) | CN100566512C (ja) |
TW (1) | TWI281372B (ja) |
WO (1) | WO2005051057A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005322568A (ja) * | 2004-05-11 | 2005-11-17 | Nec Tokin Corp | 端子の接続方法及び回路基板 |
JP2007005471A (ja) * | 2005-06-22 | 2007-01-11 | Mitsumi Electric Co Ltd | 回路基板装置 |
JP4677865B2 (ja) * | 2005-09-20 | 2011-04-27 | 日本電気株式会社 | 回路基板 |
JP2009259920A (ja) * | 2008-04-15 | 2009-11-05 | Nec Tokin Corp | 回路基板および回路基板の製造方法 |
KR101065963B1 (ko) * | 2009-07-28 | 2011-09-19 | 삼성에스디아이 주식회사 | 배터리팩 및 그 제조방법 |
JP5450562B2 (ja) | 2011-10-20 | 2014-03-26 | 株式会社日本製鋼所 | 薄膜を有する成形品の製造方法および製造装置 |
JP5647194B2 (ja) * | 2012-08-09 | 2014-12-24 | 日本メクトロン株式会社 | フレキシブルプリント基板及びその製造方法 |
JP6097637B2 (ja) * | 2013-05-22 | 2017-03-15 | 日立マクセル株式会社 | 保護回路を有する二次電池パック |
CN105472879A (zh) * | 2016-01-12 | 2016-04-06 | 深圳市立洋光电子股份有限公司 | 一种alc pcb板的辅助焊接结构及其制备工艺 |
CN113709970B (zh) * | 2021-07-16 | 2022-03-04 | 北京金百泽科技有限公司 | 电子设备、pcb板及其芯片封装结构 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1056257A (ja) * | 1996-05-29 | 1998-02-24 | Rohm Co Ltd | 回路基板への端子の実装方法、および回路基板 |
JPH10209597A (ja) * | 1997-01-23 | 1998-08-07 | Rohm Co Ltd | 金属端子片を有する回路基板、およびその製造方法、ならびに同回路基板に対する導体片の接続構造 |
JP2002050884A (ja) * | 2000-07-31 | 2002-02-15 | Rohm Co Ltd | 回路基板、およびこの回路基板と充電池との接続方法 |
JP2003168407A (ja) * | 2001-11-30 | 2003-06-13 | Toshiba Corp | 電池パック |
JP2004304019A (ja) * | 2003-03-31 | 2004-10-28 | Mitsumi Electric Co Ltd | 回路基板の接続パターン構造及び回路基板 |
JP2004348980A (ja) * | 2003-05-19 | 2004-12-09 | Sony Corp | 端子部材の構造 |
Family Cites Families (17)
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US3793064A (en) * | 1971-11-15 | 1974-02-19 | Du Pont | Product and process for cavity metallization of semiconductor packages |
US3823468A (en) * | 1972-05-26 | 1974-07-16 | N Hascoe | Method of fabricating an hermetically sealed container |
JPS59180514A (ja) * | 1983-03-31 | 1984-10-13 | Toshiba Corp | 光受信モジユ−ル |
US5168344A (en) * | 1990-08-15 | 1992-12-01 | W. R. Grace & Co. Conn. | Ceramic electronic package design |
US5410451A (en) * | 1993-12-20 | 1995-04-25 | Lsi Logic Corporation | Location and standoff pins for chip on tape |
US6262513B1 (en) * | 1995-06-30 | 2001-07-17 | Kabushiki Kaisha Toshiba | Electronic component and method of production thereof |
CN1164153C (zh) | 1996-05-29 | 2004-08-25 | 罗姆股份有限公司 | 电路板上接线端的安装方法以及电路板 |
DE69838604T2 (de) * | 1997-01-23 | 2008-06-05 | Rohm Co. Ltd., Kyoto | Gedruckte platte und verfahren zu deren herstellung |
JP3982876B2 (ja) * | 1997-06-30 | 2007-09-26 | 沖電気工業株式会社 | 弾性表面波装置 |
US7126161B2 (en) * | 1998-10-13 | 2006-10-24 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device having El layer and sealing material |
US6734781B1 (en) * | 1999-04-30 | 2004-05-11 | Rohm Co., Ltd. | Mounting structure for temperature-sensitive fuse on circuit board |
EP1130642A4 (en) * | 1999-07-26 | 2008-01-09 | Tdk Corp | HIGH FREQUENCY MODULE |
US6700061B2 (en) * | 2000-10-17 | 2004-03-02 | Murata Manufacturing Co., Ltd. | Composite electronic component |
EP1267429B1 (en) | 2000-11-01 | 2017-03-15 | Sony Corporation | Battery cell and production method therefor |
JP5034137B2 (ja) | 2000-11-01 | 2012-09-26 | ソニー株式会社 | 溶接物の製造方法,台座および電池の製造方法 |
JP2002208788A (ja) | 2001-01-12 | 2002-07-26 | Rohm Co Ltd | 回路基板、およびその製造方法 |
JP3714545B2 (ja) * | 2001-12-25 | 2005-11-09 | ローム株式会社 | 保護回路モジュールおよびこれを備える電池パック |
-
2003
- 2003-11-21 JP JP2003392676A patent/JP3776907B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-19 US US10/580,157 patent/US7439625B2/en not_active Expired - Fee Related
- 2004-11-19 KR KR1020067009766A patent/KR100820517B1/ko not_active IP Right Cessation
- 2004-11-19 TW TW093135599A patent/TWI281372B/zh not_active IP Right Cessation
- 2004-11-19 CN CNB2004800343275A patent/CN100566512C/zh not_active Expired - Fee Related
- 2004-11-19 WO PCT/JP2004/017276 patent/WO2005051057A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1056257A (ja) * | 1996-05-29 | 1998-02-24 | Rohm Co Ltd | 回路基板への端子の実装方法、および回路基板 |
JPH10209597A (ja) * | 1997-01-23 | 1998-08-07 | Rohm Co Ltd | 金属端子片を有する回路基板、およびその製造方法、ならびに同回路基板に対する導体片の接続構造 |
JP2002050884A (ja) * | 2000-07-31 | 2002-02-15 | Rohm Co Ltd | 回路基板、およびこの回路基板と充電池との接続方法 |
JP2003168407A (ja) * | 2001-11-30 | 2003-06-13 | Toshiba Corp | 電池パック |
JP2004304019A (ja) * | 2003-03-31 | 2004-10-28 | Mitsumi Electric Co Ltd | 回路基板の接続パターン構造及び回路基板 |
JP2004348980A (ja) * | 2003-05-19 | 2004-12-09 | Sony Corp | 端子部材の構造 |
Also Published As
Publication number | Publication date |
---|---|
JP2005158883A (ja) | 2005-06-16 |
JP3776907B2 (ja) | 2006-05-24 |
TW200533270A (en) | 2005-10-01 |
CN1883241A (zh) | 2006-12-20 |
CN100566512C (zh) | 2009-12-02 |
US7439625B2 (en) | 2008-10-21 |
KR100820517B1 (ko) | 2008-04-07 |
US20070108254A1 (en) | 2007-05-17 |
TWI281372B (en) | 2007-05-11 |
KR20060086970A (ko) | 2006-08-01 |
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