WO2010109788A1 - 半導体素子基板、その製造方法及び半導体装置 - Google Patents
半導体素子基板、その製造方法及び半導体装置 Download PDFInfo
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- WO2010109788A1 WO2010109788A1 PCT/JP2010/001609 JP2010001609W WO2010109788A1 WO 2010109788 A1 WO2010109788 A1 WO 2010109788A1 JP 2010001609 W JP2010001609 W JP 2010001609W WO 2010109788 A1 WO2010109788 A1 WO 2010109788A1
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- WIPO (PCT)
- Prior art keywords
- semiconductor element
- metal plate
- outer frame
- connection terminal
- forming
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- 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
- H01L2924/01—Chemical elements
- H01L2924/01082—Lead [Pb]
-
- 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
- H01L2924/013—Alloys
- H01L2924/014—Solder alloys
-
- 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
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
-
- 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
- H01L2924/30—Technical effects
- H01L2924/35—Mechanical effects
- H01L2924/351—Thermal stress
Definitions
- the present invention relates to a technique of a semiconductor package substrate suitable for mounting a semiconductor element.
- the present invention relates to a semiconductor element substrate, a semiconductor element substrate manufacturing method, and a semiconductor device using the semiconductor element substrate.
- outer leads for connection to a printed wiring board are arranged on the side surface of the semiconductor package.
- the lead frame forms a desired photoresist pattern on both sides of the metal plate and is etched from both sides. As a result, it is possible to obtain an inner lead, an outer lead, and an outer frame portion that fixes these, which are connection portions between the semiconductor element mounting portion and the semiconductor element electrode.
- the lead frame can be obtained by stamping with a press.
- the electrode of the semiconductor element and the inner lead are electrically connected using a gold wire or the like. Thereafter, the vicinity of the semiconductor element including the inner lead portion is resin-sealed, the outer frame portion is cut, and the outer lead is bent as necessary.
- the outer lead installed on the side surface is limited to 200 to 300 pins in a package size of about 30 mm square in view of the processing capability for miniaturization.
- the semiconductor element substrate includes a wiring 110, an external connection terminal 111, an outer frame part 112, a polyimide resin layer 116, a semiconductor element mounting part 118, and a semiconductor element electrode connection terminal 119.
- a wiring 110 As shown in FIGS. 11 and 12, in the BGA type lead frame, when the number of external connection terminals 111 increases, the length of the wiring 110 on the connection terminal 119 side of the semiconductor element electrode becomes longer.
- the wiring 110 is produced by half-etching a metal plate, and the width and thickness of the wiring 110 are small, and there is a problem that the yield is very poor due to the occurrence of bending or bending in the steps after the etching.
- Patent Document 1 discloses that half etching is performed only on the external connection terminal 111 side, an electrodeposited polyimide layer is formed on the etched surface, and then the semiconductor element electrode connection terminal 119 side is formed by etching. .
- the fine wiring 110 is supported by the polyimide resin layer 116 although it is a thin film, and the bending and bending of the wiring during the production of the lead frame are avoided.
- connection terminal 119 when the semiconductor element is mounted on the semiconductor element substrate of this structure and the semiconductor element electrode and the connection terminal 119 are connected by wire bonding, the lower part of the connection terminal 119 is hollow, so that the wire connection force is applied. Therefore, there was a problem that poor connection occurred and the assembly yield was significantly reduced.
- Patent Document 1 it is presumed that the problem of bonding failure can be avoided to some extent by filling a premold resin instead of the electrodeposited polyimide layer.
- a premold resin instead of the electrodeposited polyimide layer.
- the resin shrinks, and the adhesion between the resin and the outer frame part loses the shrinking force of the resin, causing a problem that peeling occurs. did.
- the present invention provides a semiconductor element substrate, a method for manufacturing the same, and a semiconductor device, which can cope with an increase in the number of electrodes of a semiconductor element, have high reliability, and can be stably manufactured and assembled.
- a semiconductor element mounting portion, a semiconductor element electrode connection terminal, a wiring, an outer frame portion, four corners of the outer frame portion, and a metal piece that is a part of the metal plate are formed on the first surface of the metal plate.
- the step of forming a second photoresist pattern for forming the external connection terminal, the outer frame portion and the slit on the second surface of the metal plate is connected to the metal piece and the four corners of the outer frame portion.
- a metal plate a semiconductor element mounting portion formed on the first surface of the metal plate, and a semiconductor element electrode formed on the first surface of the metal plate.
- a resin layer filled in the plurality of recesses is provided.
- a metal plate a semiconductor element mounting portion formed on the first surface of the metal plate, and a semiconductor element electrode formed on the first surface of the metal plate.
- a resin layer filled in the plurality of recesses and is mounted on the semiconductor element mounting portion of the semiconductor element substrate and electrically connected to the semiconductor element substrate.
- a semiconductor device a semiconductor device.
- the present invention it is possible to arrange external connection terminals for connection with a printed wiring board in the form of an array on the entire back surface of the semiconductor element substrate. Further, according to the present invention, since the substrate is based on a lead frame and no plated wiring is used, reliability against thermal stress can be ensured. Furthermore, according to the present invention, no defects such as wiring breakage or bending occur at the time of manufacturing the substrate, and the slit is provided at the time of wire bonding, which is a semiconductor package assembly process. It is possible to prevent the premold resin from being peeled from the metal plate by relieving the stress of the premold resin that occurs when the resin is cured after the recess is filled.
- FIG. 1 is a partially cutaway plan view showing a part of a semiconductor element substrate according to a first embodiment of the present invention.
- FIG. 6 is a partially cutaway plan view showing another part of the semiconductor element substrate according to the first embodiment of the present invention.
- It is a schematic sectional drawing for demonstrating the process of the manufacturing method of the semiconductor device which concerns on Embodiment 2 of this invention.
- It is a schematic sectional drawing for demonstrating the other process of the manufacturing method of the semiconductor device which concerns on Embodiment 2 of this invention.
- FIG. 1 to 6 are schematic cross-sectional views for explaining a process of the method for manufacturing a semiconductor element substrate according to the first embodiment of the present invention.
- a first photoresist pattern 2 a of photoresist is formed on the upper surface of the metal plate 1 used in the lead frame, and a second photoresist pattern 2 b is formed on the lower surface of the metal plate 1. Is done.
- the first photoresist pattern 2 a on the upper surface of the metal plate 1 is used to form the semiconductor element mounting portion 8, the semiconductor element electrode connection terminal 9, the wiring 10, the outer frame portion 5, and the slit 4 on the upper surface of the metal plate 1. (See FIG. 6).
- the slit 4 penetrates the lower surface of the metal plate 1, but the periphery of the outer frame portion 5 and the metal piece 17 are connected at least at the four corners of the outer frame portion 5.
- the second photoresist pattern 2b on the lower surface of the metal plate 1 is for forming the external connection terminal 11, the outer frame portion 5 and the slit 4 on the lower surface of the metal plate 1 (see FIG. 6).
- the slit 4 penetrates the upper surface of the metal plate 1, but the periphery of the outer frame portion 5 and the metal piece 17 are connected at least at the four corners of the outer frame portion 5.
- any material can be used as long as it has etching processability, mechanical strength, thermal conductivity, expansion coefficient, etc. as a lead frame. Alloys and copper alloys to which various metal elements are added in order to improve mechanical strength are often used.
- etching is performed from the lower surface of the metal plate 1 using an etching solution that dissolves the metal plate 1 such as ferric chloride solution to form the recess 3 (see FIG. 3). Since the remaining portion of the metal plate 1 finally becomes a wiring, the depth of the concave portion 3 may remain about 10 ⁇ m to 50 ⁇ m so that a fine wiring can be formed at the time of etching on the next upper surface side. preferable.
- the slit 4 is formed in the outer frame portion 5 by etching from the upper surface side (see FIG. 3).
- connecting pieces 18 that connect at least four corners of the outer frame part 5 and the metal pieces 17 of the outer frame part 5 are formed in the outer frame part 5 ( (See FIGS. 7 and 8).
- the stress generated when the resin layer 6 made of the premold resin filled in the recess 3 is cured is relieved, and the resin layer 6 is peeled off from the metal plate 1. Can be prevented.
- the upper and lower surfaces of the metal plate 1 are reversed and returned to the original state, and then the upper surface of the metal plate 1 is etched to form the semiconductor mounting portion 8, the semiconductor element electrode connection terminal 9, and the wiring 10. Was produced (see FIGS. 5 and 6).
- FIG. 7 is a partially cutaway plan view showing a part of the semiconductor element substrate according to the first embodiment of the present invention.
- FIG. 8 is a partially cutaway plan view showing another part of the semiconductor element substrate according to the first embodiment of the present invention.
- the external connection terminals 11 can be arranged in an array, and it is possible to cope with an increase in the number of pins of the semiconductor element. Further, by forming the slit 4, at least four corners of the outer frame portion 5 are connected to the metal piece 17 by the connecting piece 18.
- FIG. 9 is a schematic cross-sectional view for explaining a process in the method for manufacturing a semiconductor device according to the second embodiment of the present invention.
- FIG. 10 is a schematic cross-sectional view for explaining a process in the method for manufacturing a semiconductor device according to the second embodiment of the present invention.
- the same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and the description thereof is omitted.
- the semiconductor element 12 is mounted on the semiconductor element mounting portion 8 of the semiconductor element substrate 7 by a die attach material 14, and the semiconductor element 12 is connected to the semiconductor element electrode connection terminal 9 by a gold wire 13. .
- the semiconductor element electrode connection terminal 9 is subjected to nickel-gold plating, tin plating, silver plating or nickel-palladium-gold plating.
- the lead frame type semiconductor element substrate 7 is placed on a heat block and bonded while being heated.
- the resin layer 6 exists flush with the lower portion of the semiconductor element electrode connection terminal 9. Because it does not take a hollow structure, it can be assembled without causing poor bonding.
- the side of the semiconductor element substrate 7 is sealed by transfer molding or potting, and the outer frame portion 5 is separated by a diamond blade or the like, so that it is cut into small pieces.
- a semiconductor device (semiconductor package) using the semiconductor element substrate 7 is obtained by mounting solder balls on the external connection terminals 11.
- Example 1 of the present invention relates to an example of manufacturing a semiconductor element substrate of LGA (Land Grid Array) type.
- LGA Land Grid Array
- the manufactured LGA package has a size of 10 mm square, and has an external connection terminal 11 having an array of 168 pins on the lower surface of the package.
- a long strip-like copper alloy metal plate 1 (Furukawa Electric, EFTEC64T) having a width of 150 mm and a thickness of 200 ⁇ m was prepared.
- EFTEC64T Fluorescent Electrode
- a photoresist (manufactured by Tokyo Ohka Kogyo Co., Ltd., OFPR4000) is coated on both surfaces of the metal plate 1 to a thickness of 5 ⁇ m with a roll coater, and then at 90 ° C. Pre-baked.
- pattern exposure is performed from both sides through a photomask having a desired pattern, followed by development with a 1% aqueous sodium carbonate solution, followed by water washing and post-baking, as shown in FIG.
- the photoresist pattern 2a and the second photoresist pattern 2b were obtained.
- the first photoresist pattern 2 a on the upper surface (first surface) of the metal plate 1 forms the semiconductor element mounting portion 8, the connection terminal 9 with the semiconductor element electrode, the wiring 10, the outer frame portion 5, and the slit 4. (See FIG. 6).
- the slit 4 penetrates the second surface of the metal plate 1, but the periphery of the outer frame portion 5 and the metal piece 17 are connected at least at the four corners of the outer frame portion 5.
- the second photoresist pattern 2 b on the lower surface (second surface) of the metal plate 1 is for forming the external connection terminals 11, the outer frame portion 5, and the slits 4 on the second surface of the metal plate 1. (See FIG. 6).
- the slit 4 penetrates the first surface of the metal plate 1, but the periphery of the outer frame portion 5 and the metal piece 17 are connected at least at the four corners of the outer frame portion 5.
- a first etching process is performed from the second surface of the metal plate using a ferric chloride solution.
- the recess 3 was formed by thinning the portion of the metal plate 1 exposed from the second surface side photoresist pattern 2b to a thickness of 30 ⁇ m (see FIG. 3).
- the specific gravity of the ferric chloride solution was 1.38 at a liquid temperature of 50 ° C.
- the 2nd etching process was performed using the ferric chloride solution, and it penetrated to the 1st surface. Slit 4 was formed (see FIG. 3).
- the specific gravity of the ferric chloride solution was 1.38 at a liquid temperature of 50 ° C.
- the metal plate 1 having the second surface etched is immersed in an aqueous solution of ammonium persulfate at 30 ° C. and 50 g / L for 5 minutes, and the surface of the etched surface formed by the first and second etchings. Was roughened (not shown). Further, the metal plate 1 was dipped in a predetermined aqueous sodium hydroxide stripping solution, and the photoresist on the second surface was stripped (not shown).
- thermosetting resin SMC- manufactured by Shin-Etsu Chemical Co., Ltd.
- 376KF1 376KF1
- main curing was performed at 180 ° C. for 3 hours, and the resin layer 6 was formed (see FIG. 4).
- the embedding property of the resin layer 6 which is a thermosetting resin was good, and no defects such as voids were observed.
- the resin layer 6 which is a thermosetting resin hardly remained on the surface of the external connection terminal 11 and the outer frame portion 5 which were not etched, the surface of the permanganate at 60 ° C. was also used for cleaning the surface.
- Immersion treatment was performed for about 3 minutes in an aqueous alkali solution (40 g / L potassium permanganate + 20 g / L sodium hydroxide).
- a third etching process is performed from the first surface side of the metal plate 1 with a ferric chloride solution to be exposed from the photoresist pattern 2a.
- the part of the metal plate 1 was dissolved and removed, and the semiconductor element mounting portion 8, the semiconductor element electrode connection terminal 9, and the wiring 10 were formed (see FIG. 5).
- the external connection terminal 11 extends from the semiconductor element electrode connection terminal 9.
- a back sheet or the like is attached to the second surface side of the metal plate 1 during the third etching process so that unnecessary etching is not performed on the second surface side of the metal plate 1. It is preferred that
- the photoresist pattern 2a on the first surface of the metal plate 1 was peeled off to obtain a semiconductor element substrate 7 as a desired lead frame type LGA substrate (see FIG. 6).
- the exposed surface of the metal plate 1 was subjected to electrolytic nickel-gold plating.
- the thickness of nickel was 5 ⁇ m and the thickness of gold was 0.1 ⁇ m (not shown).
- the semiconductor element 12 was mounted on the semiconductor element substrate 7, which is a lead frame type LGA substrate, using the die attach material 14, and the die attach material 14 was cured for 1 hour at 150 ° C. Further, the electrode of the semiconductor element 12 and the connection terminal 9 of the semiconductor element electrode were connected by wire bonding using a gold wire having a diameter of 30 ⁇ m (see FIG. 9). The heating temperature for wire bonding was 200 ° C., and when the pull strength of the wire on the side of the connection terminal 9 of the semiconductor element electrode was measured, it was 9 g or more, and a good connection was obtained.
- the area including the semiconductor element 12 and the connection terminal 9 of the semiconductor element electrode is sealed with a transfer mold resin 15, cut into small pieces, and a semiconductor device (semiconductor package) using the semiconductor element substrate 7 )was gotten.
- the present invention makes it possible to obtain a lead frame type substrate with reduced defects at the time of manufacturing and at the time of assembling a semiconductor package and improved reliability against thermal stress, and in particular, a multi-pin that cannot be handled by a lead frame type semiconductor package. Applied to package substrate.
- the present invention it is possible to arrange external connection terminals for connection with a printed wiring board in the form of an array on the entire back surface of the semiconductor element substrate. Further, according to the present invention, since the substrate is based on a lead frame and no plated wiring is used, reliability against thermal stress can be ensured. Furthermore, according to the present invention, no defects such as wiring breakage or bending occur at the time of manufacturing the substrate, and the slit is provided at the time of wire bonding, which is a semiconductor package assembly process. It is possible to prevent the premold resin from being peeled from the metal plate by relieving the stress of the premold resin that occurs when the resin is cured after the recess is filled. Therefore, according to the present invention, it is possible to cope with an increase in the number of electrodes of a semiconductor element, have high reliability, and stably perform fabrication and semiconductor package assembly.
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Abstract
Description
本願は、2009年3月25日に、日本に出願された特願2009-075139号に基づき優先権を主張し、その内容をここに援用する。
また、本発明によれば、リードフレームをベースにした基板であり、めっき配線を使用しないため、熱応力に対する信頼性を確保することができる。さらに、本発明によれば、本基板作製時において、配線の折れや曲がり等の不良が発生せず、半導体パッケージ組み立て工程であるワイヤーボンディング時において、スリットが設けられていることによって、プリモールド樹脂が凹部に充填された後、硬化する際に発生するプリモールド樹脂の応力が緩和されることにより、プリモールド樹脂が金属板から剥離してしまうことを防ぐことが可能となる。
(実施の形態1)
図1~図6は、本発明の実施の形態1に係る半導体素子基板の製造方法の工程を説明するための概略断面である。
次に、本発明の実施の形態2について、図面を参照して説明する。図9は、本発明の実施の形態2に係る半導体装置の製造方法の工程を説明するための略断面図である。図10は、本発明の実施の形態2に係る半導体装置の製造方法の工程を説明するための略断面図である。本発明の実施の形態2においては、本発明の実施の形態1と同じ構成要素には同じ参照符号が付されて、その説明が省略される。
次に、本発明の実施例1について、図面を参照して詳細に説明する。本発明の実施例1は、LGA(Land Grid Aray)タイプの半導体素子基板を製造する例についてのものである。
熱硬化樹脂である樹脂層6の埋め込み性は良好で、ボイド等の不良は観察されなかった。外部接続端子11、外枠部5のエッチングされなかった面上には、ほとんど熱硬化樹脂である樹脂層6が残存しなかったが、その表面洗浄を兼ねて、60℃の過マンガン酸カリウムのアルカリ水溶液(40g/L過マンガン酸カリウム+20g/L水酸化ナトリウム)に3分ほど浸漬処理が行われた。
また、本発明によれば、リードフレームをベースにした基板であり、めっき配線を使用しないため、熱応力に対する信頼性を確保することができる。さらに、本発明によれば、本基板作製時において、配線の折れや曲がり等の不良が発生せず、半導体パッケージ組み立て工程であるワイヤーボンディング時において、スリットが設けられていることによって、プリモールド樹脂が凹部に充填された後、硬化する際に発生するプリモールド樹脂の応力が緩和されることにより、プリモールド樹脂が金属板から剥離してしまうことを防ぐことが可能となる。
したがって、本発明によれば、半導体素子の電極数の増加に対応し、信頼性が高く、作製及び半導体パッケージ組み立てを安定に行うことができる。
2a 第1のフォトレジストパターン
2b 第2のフォトレジストパターン
3 凹部
4 スリット
5 外枠部
6 樹脂層
7 半導体素子基板
8 半導体素子搭載部
9 半導体素子電極接続端子
10 配線
11 外部接続端子
12 半導体素子
13 金線
14 ダイアタッチ材
15 トランスファーモールド樹脂
16 電着ポリイミド層
17 金属片
18 連結片
110 配線
111 外部接続端子
112 外枠部
116 ポリイミド樹脂層
118 半導体素子搭載部
119 半導体素子電極接続端子
Claims (3)
- 金属板の第1の面に、半導体素子搭載部、半導体素子電極接続端子、配線、外枠部及び前記外枠部の四隅と前記金属板の一部である金属片とがつながるように前記金属板の前記第1の面と前記第1の面とは異なる第2の面とを貫通するスリットを形成するための第1のフォトレジストパターンを形成する工程と、
前記金属板の前記第2の面に外部接続端子、前記外枠部及び前記スリットを形成するための第2のフォトレジストパターンを形成する工程と、
前記金属片と前記外枠部の四隅とがつながるように前記スリットをハーフエッチングによって形成する工程と、
前記金属板の前記第2の面に複数の凹部を形成する工程と、
前記スリットに入り込まないように前記複数の凹部に樹脂を注入し硬化させて樹脂層を形成する工程と、
前記金属板の前記第1の面をエッチングして前記半導体素子搭載部、前記外部接続端子と電気的に接続される前記半導体素子電極接続端子、及び前記外枠部を形成する工程と、
を含む、半導体素子基板の製造方法。 - 第1の面と前記第1の面とは異なる第2の面とを含む金属板と、
前記金属板の前記第1の面に形成されている半導体素子搭載部と、
前記金属板の前記第1の面に形成されている半導体素子電極との接続端子と、
前記金属板の前記第1の面に形成されている配線と、
前記金属板に形成されている外枠部と、
前記外枠部の四隅と前記金属板の一部である金属片とを連結する連結片と、
前記金属板の前記第2の面に形成されている外部接続端子と、
前記金属板の前記第2の面に形成されている複数の凹部と、
前記複数の凹部に充填されている樹脂層と、
を含む、半導体素子基板。 - 第1の面と前記第1の面とは異なる第2の面とを含む金属板と、
前記金属板の前記第1の面に形成されている半導体素子搭載部と、
前記金属板の前記第1の面に形成されている半導体素子電極との接続端子と、
前記金属板の前記第1の面に形成されている配線と、
前記金属板に形成されている外枠部と、
前記外枠部の四隅と前記金属板の一部である金属片とを連結する連結片と、
前記金属板の前記第2の面に形成されている外部接続端子と、
前記金属板の前記第2の面に形成されている複数の凹部と、
前記複数の凹部に充填されている樹脂層と、
を含む、半導体素子基板と、
前記半導体素子基板の前記半導体素子搭載部に搭載され前記半導体素子基板と 電気的に接続されている半導体素子と、
を含む、半導体装置。
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SG2011069358A SG174557A1 (en) | 2009-03-25 | 2010-03-08 | Substrate for semiconductor element, method for manufacturing substrate for semiconductor element, and semiconductor device |
CN201080012985XA CN102362345B (zh) | 2009-03-25 | 2010-03-08 | 半导体元件基板及其制造方法、半导体器件 |
US13/242,099 US8319322B2 (en) | 2009-03-25 | 2011-09-23 | Substrate for semiconductor element, method for manufacturing substrate for semiconductor element, and semiconductor device |
US13/665,350 US8535979B2 (en) | 2009-03-25 | 2012-10-31 | Method for manufacturing substrate for semiconductor element |
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JP2009-075139 | 2009-03-25 | ||
JP2009075139A JP5407474B2 (ja) | 2009-03-25 | 2009-03-25 | 半導体素子基板の製造方法 |
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US13/242,099 Continuation US8319322B2 (en) | 2009-03-25 | 2011-09-23 | Substrate for semiconductor element, method for manufacturing substrate for semiconductor element, and semiconductor device |
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US8404524B2 (en) * | 2010-09-16 | 2013-03-26 | Stats Chippac Ltd. | Integrated circuit packaging system with paddle molding and method of manufacture thereof |
CN102324413B (zh) * | 2011-09-13 | 2013-03-06 | 江苏长电科技股份有限公司 | 有基岛预填塑封料先刻后镀引线框结构及其生产方法 |
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- 2010-03-08 SG SG2011069358A patent/SG174557A1/en unknown
- 2010-03-08 KR KR1020117023494A patent/KR101640625B1/ko active IP Right Grant
- 2010-03-08 WO PCT/JP2010/001609 patent/WO2010109788A1/ja active Application Filing
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Also Published As
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KR101640625B1 (ko) | 2016-07-18 |
US20120018867A1 (en) | 2012-01-26 |
SG174557A1 (en) | 2011-10-28 |
TWI421910B (zh) | 2014-01-01 |
CN102362345B (zh) | 2013-12-25 |
JP2010232216A (ja) | 2010-10-14 |
TW201044441A (en) | 2010-12-16 |
CN102362345A (zh) | 2012-02-22 |
US20130112652A1 (en) | 2013-05-09 |
US8535979B2 (en) | 2013-09-17 |
US8319322B2 (en) | 2012-11-27 |
KR20110130458A (ko) | 2011-12-05 |
JP5407474B2 (ja) | 2014-02-05 |
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