JP2003234425A - Hollow package for loading semiconductor element - Google Patents

Hollow package for loading semiconductor element

Info

Publication number
JP2003234425A
JP2003234425A JP2002030194A JP2002030194A JP2003234425A JP 2003234425 A JP2003234425 A JP 2003234425A JP 2002030194 A JP2002030194 A JP 2002030194A JP 2002030194 A JP2002030194 A JP 2002030194A JP 2003234425 A JP2003234425 A JP 2003234425A
Authority
JP
Japan
Prior art keywords
lead
resin
package
hollow
exposed
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.)
Pending
Application number
JP2002030194A
Other languages
Japanese (ja)
Inventor
Masayuki Kondo
政幸 近藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Chemicals Inc
Original Assignee
Mitsui Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Chemicals Inc filed Critical Mitsui Chemicals Inc
Priority to JP2002030194A priority Critical patent/JP2003234425A/en
Publication of JP2003234425A publication Critical patent/JP2003234425A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481Disposition
    • H01L2224/48151Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48245Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item

Landscapes

  • Lead Frames For Integrated Circuits (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost resin hollow package for loading a semiconductor element of superior conduction reliability in which a lead is hard to be peeled off from a bottom surface of the resin and to be deformed. <P>SOLUTION: The resin hollow package for loading a semiconductor element comprises an inner lead 2 whose upper surface is exposed to a hollow part and an outer lead 3 that is connected to the inner lead while a lower surface of the outer lead is exposed along a bottom surface of the package. Related to a lower end part 5 in a lead thickness direction of the exposed part of the bottom surface of the package of the outer lead, the width of at least a part of the lead is made narrower, and a resin exists at the lower end part of the narrowed lead. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明が属する技術分野】本発明は、半導体装置、特に
回路基板と半田接合させる際の導通信頼性の向上を図
り、かつ安価に製造できる表面実装用の半導体素子装着
用樹脂製中空パッケージの構造に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiconductor device, and more particularly to a structure of a resin-made hollow package for mounting a semiconductor element for surface mounting, which can improve the reliability of conduction when soldered to a circuit board and can be manufactured at low cost. It is about.

【0002】[0002]

【従来の技術】半導体素子装着用樹脂製中空パッケージ
は現在DIP(Dual Inline Packag
e)型が主流であるが、近年表面実装型SOP(Sma
ll Outline Package)型の樹脂製中空
パッケージやSON(Small Outline No
nlead)型、ないしはQFN(Quad Flat
Nonleaded)型の樹脂製中空パッケージが使用
され始めている。これは、樹脂製中空パッケージが表面
実装型でかつ小型、薄型のパッケージが要求されてきて
いるためである。
2. Description of the Related Art Currently, a resin hollow package for mounting a semiconductor element is a DIP (Dual Inline Package).
e) type is the mainstream, but in recent years surface mount SOP (Sma
ll Outline Package) type resin hollow package and SON (Small Outline No.)
nlead) type or QFN (Quad Flat)
Nonleaded type resin hollow packages are beginning to be used. This is because the hollow resin package is required to be a surface mount type, small and thin package.

【0003】本要求に適応する形態として挙げられる、
SOP型樹脂製中空パッケージは図1に示すごとく樹脂
製中空パッケージの外側にアウターリードが延出され、
その後リードが屈曲されるタイプである。
As a form adapted to this request,
The SOP type resin hollow package has outer leads extended to the outside of the resin hollow package as shown in FIG.
After that, the lead is bent.

【0004】更に小型にする手法として挙げられるSO
N型は、図2に示す如く樹脂内部にリードが配線される
タイプである。リードを樹脂内部で屈曲させるタイプは
高周波トランジスタ用パッケージに関するものである
が、特許2600689号に記載されている如く、半導
体素子を置載したダイパッド部を有した半導体装置用中
空パッケージにおいて、リードの一端が中空内部にあ
り、内部リードは樹脂中を貫通し樹脂底面に露出するタ
イプがある。
SO which can be mentioned as a method for further downsizing
The N type is a type in which leads are wired inside the resin as shown in FIG. The type in which the leads are bent inside the resin relates to a high-frequency transistor package. However, as described in Japanese Patent No. 2600689, one end of a lead is used in a hollow package for a semiconductor device having a die pad portion on which a semiconductor element is mounted. There is a type that is inside the hollow and the inner lead penetrates through the resin and is exposed on the bottom surface of the resin.

【0005】一方、表面実装タイプで、上記よりも更に
中空パッケージを薄くする手法として、特開2001―
77277に示される如く、リードを樹脂内部で屈曲さ
せずに中空パッケージの樹脂底面部にハーフエッチング
したリードの一部をそのまま露出させたタイプがある。
On the other hand, as a method of making a hollow package thinner than the above, which is a surface mount type, Japanese Patent Laid-Open No. 2001-
As shown in 77277, there is a type in which a part of the lead half-etched is exposed as it is on the bottom surface of the resin of the hollow package without bending the lead inside the resin.

【0006】[0006]

【発明が解決しようとする課題】上記の如く樹脂製中空
パッケージにおいて小型、薄型で表面実装タイプが多々
提示されている。しかしながら、特許2600689に
示されるタイプの様なリード形状の場合、特に樹脂底面
に露出したタイプでは、樹脂成形後、樹脂底面から延出
したアウターリードの先端部を切断して電気的に絶縁し
独立したリードとする際に、樹脂とリードの密着力不足
のため、樹脂底面からリードが剥離し変形を起し易い。
樹脂底面に、剥離し変形したリードが存在すると基板へ
の半田接合が均一にできなくなり導通信頼性の欠如を惹
起させる。また、リードと樹脂が剥離を起すことによ
り、剥離部に外気からの水分が侵入しやすくなり、前記
特許に記載される様な優れた耐湿性を維持させることが
困難となる。一方、特開2001−77277で記載さ
れたタイプでは、樹脂底面からのリードの剥離は発生し
ないものの、リードをエッチング処理するためリードの
製作費が高価となる問題を有している。従って、本発明
では、樹脂底面からリードが剥離し変形を起し難く、導
通信頼性に優れる安価な半導体素子装着用樹脂製中空パ
ッケージを提供することを目的とする。
As described above, various small, thin, surface-mounting type hollow resin packages have been proposed. However, in the case of a lead shape such as the type shown in Japanese Patent No. 2600689, particularly in the case of being exposed on the resin bottom surface, after the resin molding, the outer lead extending from the resin bottom surface is cut to electrically insulate it independently. When the lead is formed, the lead is likely to be peeled off from the bottom surface of the resin and deformed due to insufficient adhesion between the resin and the lead.
If the peeled and deformed leads are present on the bottom surface of the resin, the solder joining to the substrate cannot be made uniform and the lack of conduction reliability is caused. Further, since the lead and the resin are peeled off, moisture from the outside air easily enters the peeled portion, and it becomes difficult to maintain the excellent moisture resistance as described in the above patent. On the other hand, in the type described in Japanese Patent Laid-Open No. 2001-77277, although peeling of the lead from the bottom surface of the resin does not occur, there is a problem that the lead manufacturing cost becomes high because the lead is etched. Therefore, it is an object of the present invention to provide an inexpensive resin hollow package for mounting a semiconductor element, in which the leads are less likely to be peeled off from the resin bottom surface and deformed, and which is excellent in conduction reliability.

【0007】[0007]

【課題を解決するための手段】本発明は、小型で、薄型
の表面実装用の半導体素子装着用樹脂製中空パッケージ
を作る上で抱えている上記課題を解決するために、リー
ドの上表面が中空部に露出したインナーリードと、イン
ナーリードに連なり、リードの下表面がパッケージ底面
に沿って露出したアウターリードを有する中空パッケー
ジであって、該アウターリードのパッケージ底面露出部
のリード厚み方向下端部において、少なくとも一部のリ
ード幅が狭くされ、狭くされた該リード下端部に樹脂が
存在していることを特徴とする半導体素子装着用樹脂製
中空パッケージを提供する。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems that the present invention has in making a small and thin resin package for mounting a semiconductor element for surface mounting, the upper surface of a lead is A hollow package having an inner lead exposed in the hollow portion and an outer lead connected to the inner lead and having a lower surface of the lead exposed along the bottom surface of the package, the lower end portion in the lead thickness direction of the package bottom exposed portion of the outer lead. (3) A hollow resin package for mounting a semiconductor element, wherein at least a part of the lead width is narrowed, and resin is present at the narrowed lower end portion of the lead.

【0008】本発明において、前記リード幅が狭くされ
たアウターリードのパッケージ底面露出部が、リード厚
み方向下端部をハーフプレスして製作されていること
は、好ましい態様である。
In the present invention, it is a preferred embodiment that the exposed portion of the package bottom surface of the outer lead whose lead width is narrowed is manufactured by half-pressing the lower end portion in the lead thickness direction.

【0009】[0009]

【発明の実施の形態】本発明の半導体素子装着用樹脂製
中空パッケージは、リードの上表面が中空部に露出した
インナーリードと、樹脂内部で屈曲して該インナーリー
ドと段差形状を有して連なり、リードの下表面がパッケ
ージ底面に沿って露出したアウターリードを有する中空
パッケージであって、該アウターリードのパッケージ底
面露出部のリード厚み方向下端部において、少なくとも
一部のリード幅が狭くされている。そして、狭くされた
該リード下端部に樹脂が存在し樹脂本体につらなってい
る。
BEST MODE FOR CARRYING OUT THE INVENTION The resin-made hollow package for mounting a semiconductor element of the present invention has an inner lead whose upper surface is exposed in the hollow portion and a step shape with the inner lead which is bent inside the resin. A hollow package having continuous outer leads whose lower surfaces are exposed along the bottom surface of the package, wherein at least a part of the lead width is narrowed at the lower end of the outer thickness of the outer bottom surface of the exposed portion of the package in the lead thickness direction. There is. Then, resin is present at the narrowed lower end portion of the lead and is suspended in the resin body.

【0010】このような構造を取ることにより、リード
の密着性を向上させるとともに、底面からのリードの剥
離、変形を防止でき、かつ安価なリード製作が可能とな
る。更に、詳細には露出している樹脂底面のリード下表
面の一部を矩形状にハーフプレスして狭くする手法を採
用することができる。また、樹脂底面のリードの一部を
半円又は半長円形状にハーフプレスして狭くする手法も
採用することができる。ハーフプレスする箇所は、リー
ドの片側のみを矩形状、半円形状又は半長円形状にハー
フプレスにしても良いが、好ましくは樹脂底面に露出す
るリード下端部の両側を矩形状、半円形状又は半長円形
状にハーフプレスすることが好ましい。
By adopting such a structure, the adhesion of the leads can be improved, the leads can be prevented from peeling and deformed from the bottom surface, and inexpensive leads can be manufactured. Further, in detail, a method of half-pressing a part of the exposed lower surface of the lead on the bottom surface of the resin into a rectangular shape to narrow the area can be adopted. A method of half-pressing a part of the lead on the bottom surface of the resin into a semicircular or semi-elliptical shape to narrow the lead can also be adopted. The half-pressed portion may be half-pressed into a rectangular shape, a semi-circular shape, or a semi-elliptical shape only on one side of the lead, but preferably both sides of the lower end of the lead exposed on the resin bottom surface are rectangular-shaped or semi-circular shape. Alternatively, it is preferable to half press into a semi-elliptical shape.

【0011】底面に露出したリードの幅を狭くしたハー
フプレス部の長さは、底面に露出したリードの全長にわ
たって狭くする方が樹脂との密着性が向上する点では好
ましい。しかし、樹脂成形時に、ハーフプレスされたリ
ード部を通って、パッケージの外側に延出したアウター
リード部に樹脂が流れ出し樹脂バリとして残るため、半
田接合時の導通信頼性を損なう虞がある。また、リード
屈曲部に相当する箇所のリード幅まで狭くした場合、リ
ード屈曲時にリードの強度低下の虞がある。従って、底
面に露出して幅が狭くなったリード箇所は、少なくとも
リード屈曲部よりパッケージ外周縁部方向のリード部
で、かつパッケージ外周縁部より内側の領域のリード長
さ間にあることが望ましい。
It is preferable that the length of the half press portion in which the width of the lead exposed on the bottom surface is narrowed is narrowed over the entire length of the lead exposed on the bottom surface because the adhesion with the resin is improved. However, at the time of resin molding, the resin flows out through the half-pressed lead portion to the outer lead portion extending to the outside of the package and remains as a resin burr, which may impair the conduction reliability at the time of soldering. Further, when the lead width is narrowed to a portion corresponding to the lead bent portion, there is a fear that the strength of the lead may be reduced when the lead is bent. Therefore, it is desirable that the lead portion exposed to the bottom surface and having a narrow width is at least the lead portion in the package outer peripheral edge direction from the lead bent portion and between the lead lengths in the region inside the package outer peripheral edge portion. .

【0012】ここで、本発明の樹脂製中空パッケージに
装着する半導体素子は、CCD(電荷結合素子)、CM
OS(相補的金属酸化半導体)等の固体撮像素子、マイ
クロプロセッサ、論理回路、メモリ等の回路を持ったも
のがあげられる。固体撮像素子である場合には、中空部
を封止する蓋体はガラス等の光透過性のあるものが用い
られる。
Here, the semiconductor device mounted in the resin hollow package of the present invention is a CCD (charge coupled device) or CM.
Examples thereof include a solid-state imaging device such as OS (complementary metal oxide semiconductor), a microprocessor, a logic circuit, a circuit such as a memory. In the case of a solid-state imaging device, a lid having a light-transmitting property such as glass is used as the lid that seals the hollow portion.

【0013】本発明で成形用樹脂として用いることがで
きる好適なものには、エポキシ樹脂、ポリイミド樹脂、
フェノール樹脂、不飽和ポリエステル樹脂、シリコーン
樹脂等の熱硬化性樹脂、又は液晶ポリマー、ポリフェニ
レンオキシド、ポリフェニレンスルフィド(PPS)樹
脂、ポリスルホン、ポリアミド・イミド・ポリアリルス
ルフォン樹脂などの耐熱熱可塑性樹脂等がある。これら
のうちエポキシ樹脂、ポリイミド樹脂、PPS等が特に
好ましい。エポキシ樹脂としてはビスフェノールA型、
オルソクレゾールノボラック型、ビフェニル型、ナフタ
レン型、グリシジルアミン型などのエポキシ樹脂を用い
ることができる。ポリイミド樹脂としては、ポリアミノ
ビスマレイミド、ポリピロメリットイミド、ポリエーテ
ルイミド等のポリイミド樹脂を用いることができる。
Suitable resins which can be used as the molding resin in the present invention include epoxy resin, polyimide resin,
Thermosetting resin such as phenol resin, unsaturated polyester resin, silicone resin, etc., or heat resistant thermoplastic resin such as liquid crystal polymer, polyphenylene oxide, polyphenylene sulfide (PPS) resin, polysulfone, polyamide / imide / polyallylsulfone resin, etc. . Of these, epoxy resin, polyimide resin, PPS and the like are particularly preferable. Bisphenol A type as epoxy resin,
Epoxy resins such as orthocresol novolac type, biphenyl type, naphthalene type and glycidyl amine type can be used. As the polyimide resin, a polyimide resin such as polyamino bismaleimide, polypyromellitimide, or polyetherimide can be used.

【0014】これらの耐熱樹脂には無機充填剤が添加さ
れることが好ましい。無機充填剤としてはシリカ粉末、
アルミナ粉末、窒化珪素粉末、ボロンナイトライト粉
末、酸化チタン粉末、炭化珪素粉末、ガラス繊維、アル
ミナ繊維等の耐熱無機充填剤が挙げられる。これらの
内、樹脂の等方性収縮の点で、繊維よりもシリカ粉末、
アルミナ粉末、窒化珪素粉末、ボロンナイトライド粉末
などの粉末がより好ましい。無機充填剤の粒径は、通常
0.1〜120μm、さらには、流動性の点で0.5〜
60μmの範囲にあることが好ましい。無機充填剤の配
合量は、耐熱樹脂100重量部に対して、通常40〜3
200重量部、好ましくは100〜1150重量部であ
る。また、無機充填剤の他に、硬化剤、硬化促進剤、及
びカップリング剤が含まれていても良い。
An inorganic filler is preferably added to these heat-resistant resins. Silica powder as the inorganic filler,
Examples of heat resistant inorganic fillers include alumina powder, silicon nitride powder, boron nitrite powder, titanium oxide powder, silicon carbide powder, glass fiber, and alumina fiber. Among these, in terms of isotropic shrinkage of the resin, silica powder rather than fiber,
Powders such as alumina powder, silicon nitride powder, and boron nitride powder are more preferable. The particle size of the inorganic filler is usually 0.1 to 120 μm, and moreover, 0.5 to 0.5 in terms of fluidity.
It is preferably in the range of 60 μm. The compounding amount of the inorganic filler is usually 40 to 3 with respect to 100 parts by weight of the heat resistant resin.
200 parts by weight, preferably 100 to 1150 parts by weight. Further, in addition to the inorganic filler, a curing agent, a curing accelerator, and a coupling agent may be included.

【0015】リードはリードフレーム形式で提供され
る。材質は、銅、鉄、アルミニウム又はこれらの合金か
らなる群より選ばれたもの、特に42アロイ、又は銅合
金で形成されることが望ましい。このリードフレームに
は、ことさら表面処理する必要はないが、用途に応じて
全面ないし部分的に表面処理を施すことができる。例え
ば、金、銀、ニッケル、半田等のメッキを施しても良
い。なお、固体撮像素子等の半導体素子を装着する中空
パッケージ構造の場合、半導体素子を装着するアイラン
ド部は不要であるが、アイランド部を樹脂本体中に埋設
させて耐湿板及び放熱板として用いても良い。また、底
面に露出したアウターリードはパッケージ外周縁部から
延出した形状でも良いし、また延出しない形状でも良
い。
The leads are provided in leadframe format. The material is preferably selected from the group consisting of copper, iron, aluminum or alloys thereof, particularly 42 alloy or copper alloy. This lead frame does not need to be surface-treated, but may be entirely or partially surface-treated depending on the application. For example, gold, silver, nickel, solder or the like may be plated. In the case of a hollow package structure in which a semiconductor element such as a solid-state image sensor is mounted, the island portion in which the semiconductor element is mounted is unnecessary, but the island portion may be embedded in the resin body and used as a moisture-proof plate and a heat sink. good. Further, the outer lead exposed on the bottom surface may have a shape that extends from the outer peripheral edge of the package or a shape that does not extend.

【0016】以下、図面に基づいて、本発明の実施形態
を説明する。まず図3〜5に示す様なリードフレームを
用意する。このリードフレームは42アロイ又は銅合金
からなる薄板状の金属板を所定の形状に加工して得るこ
とができる。リードフレーム1は、図4に示すようにイ
ンナーリード2とアウターリード3との途中部4におい
て段差状に屈曲加工される。そして、図3、図4、図5
に示されている通りアウターリードの一部5においてハ
ーフプレスされてリード幅が狭くなっている。なお、図
示したリードフレーム形態では、半導体素子を装着する
アイランド部がインナーリード対抗間中央部に示されて
いないが、樹脂に埋設される位置にアイランド部を有す
る構造であってもよい。
An embodiment of the present invention will be described below with reference to the drawings. First, a lead frame as shown in FIGS. 3 to 5 is prepared. This lead frame can be obtained by processing a thin metal plate made of 42 alloy or copper alloy into a predetermined shape. As shown in FIG. 4, the lead frame 1 is bent into a step shape at a middle portion 4 between the inner lead 2 and the outer lead 3. Then, FIG. 3, FIG. 4, and FIG.
As shown in (1), the lead width is narrowed by half-pressing the outer lead part 5. In the illustrated lead frame form, the island portion on which the semiconductor element is mounted is not shown in the center portion between the inner leads, but a structure having the island portion at a position embedded in the resin may be used.

【0017】図6、図7に示されるハーフプレスの形状
は、段差状に狭くなった形状である。段差の長さはリー
ド屈曲部内アールrの中心からL1以上離れた距離で、
樹脂パッケージ外周縁部よりL2以上内側に入った長さ
をL3、リード厚みをtとすると、L1=0.5r以
上、L2=0.5t以上となることが好ましく、更には
L1=r以上、L2=t以上が好ましい。ハーフプレス
の幅L4はアウターリード幅をWとすると、0.1W〜
0.47Wが好ましく、更には0.2W〜0.37Wが
好ましい。
The shape of the half press shown in FIGS. 6 and 7 is a stepped shape. The length of the step is a distance L1 or more from the center of the radius r in the lead bending portion,
Assuming that the length L2 or more inside the outer peripheral edge of the resin package is L3 and the lead thickness is t, it is preferable that L1 = 0.5r or more and L2 = 0.5t or more, and further L1 = r or more, L2 = t or more is preferable. The width L4 of the half press is 0.1 W when the outer lead width is W.
0.47 W is preferable, and 0.2 W to 0.37 W is more preferable.

【0018】ハーフプレスの深さh0は、0.1t〜
0.8tが好ましく、更には0.2t〜0.7tの深さ
が好ましい。ハーフプレスする深さが浅すぎると樹脂と
アウターリードとの密着性が劣り、ハーフプレス部に残
った樹脂バリが脱落しやすくなり、基板への実装時に半
田接合性を悪化させる。一方、ハーフプレスする深さが
深すぎると、フレームをプレスするパンチへの負荷が大
きくなりパンチの摩耗を促進することとなる。また、ハ
ーフプレスする箇所はリードの片側でも良いが、密着性
を向上させるためには両側が好ましい。
The depth h0 of the half press is 0.1 t
0.8t is preferable, and the depth of 0.2t-0.7t is more preferable. If the depth of half-pressing is too shallow, the adhesion between the resin and the outer leads will be poor, and the resin burr remaining in the half-pressed portion will easily fall off, deteriorating the solder bondability during mounting on the substrate. On the other hand, if the depth of half-pressing is too deep, the load on the punch that presses the frame is increased, and the wear of the punch is accelerated. Further, the half-pressed portion may be on one side of the lead, but is preferably on both sides in order to improve the adhesion.

【0019】また、ハーフプレスされる形状は図8に示
される様な半長円形状でも良い。半長円の長径はリード
屈曲部内アールrの中心からL1以上離れた距離で、樹
脂パッケージ外周縁部よりL2以上内側に入った長さを
L3、リード厚みtとすると、L1=0.5r以上、L
2=0.5t以上となることが好ましく、更にはL1=
r以上、L2=t以上が好ましい。ハーフプレスの幅L
4はアウターリード幅をWとすると、0.1W〜0.4
7Wが好ましく、更には0.2W〜0.37Wが好まし
い。
The half-pressed shape may be a semi-elliptical shape as shown in FIG. The major axis of the semi-oval is a distance of L1 or more from the center of the radius r in the lead bending portion, and L3 is a length L2 or more inside the outer peripheral edge of the resin package and L1 is 0.5r or more. , L
2 = 0.5t or more is preferable, and L1 =
It is preferable that r or more and L2 = t or more. Half press width L
4 is 0.1 W to 0.4 when the outer lead width is W
7W is preferable, and 0.2W to 0.37W is more preferable.

【0020】ハーフプレスの深さは、リード厚みをtと
すると0.1t〜0.8tが好ましく、更には0.2t
〜0.7tの深さが好ましい。ハーフプレスする深さが
浅すぎると樹脂とアウターリードとの密着性が劣り、ハ
ーフプレス部に残った樹脂バリが脱落しやすくなり、基
板への実装時に半田接合性を悪化させる。一方、ハーフ
プレスする深さが深すぎると、フレームをプレスするパ
ンチへの負荷が大きくなりパンチの摩耗を促進すること
となる。ハーフプレスされる形状が図9、図10に示さ
れる半円形状の場合にもハーフプレスする範囲は上記と
同じ範囲が良い。また、ハーフプレスする箇所はリード
の片側でも良いが、密着性を向上させるためには両側が
好ましい。
The depth of the half press is preferably 0.1t to 0.8t, and more preferably 0.2t, where t is the lead thickness.
A depth of ~ 0.7t is preferred. If the depth of half-pressing is too shallow, the adhesion between the resin and the outer leads will be poor, and the resin burr remaining in the half-pressed portion will easily fall off, deteriorating the solder bondability during mounting on the substrate. On the other hand, if the depth of half-pressing is too deep, the load on the punch that presses the frame is increased, and the wear of the punch is accelerated. Even when the shape to be half-pressed is the semi-circular shape shown in FIGS. 9 and 10, the range of half-pressing is preferably the same range as described above. Further, the half-pressed portion may be on one side of the lead, but is preferably on both sides in order to improve the adhesion.

【0021】次に、リードフレーム1に対して図11に
示す様な樹脂本体6が形成される。この樹脂本体の成形
は、リードフレーム1を成形金型に装着し当該金型のキ
ャビティにエポキシ樹脂等をトランスファー成形或いは
射出成形にてインサート成形することによって得られ
る。トランスファー成形条件は使用する樹脂によっても
異なるが、エポキシ樹脂の場合を例にとると、通常、成
形圧力50〜300Kg/cm2、好ましくは100〜
170Kg/cm2、温度130〜200℃、好ましく
は150〜180℃、時間10〜120秒、好ましくは
15〜60秒の条件で加圧加熱が行われる。また、射出
成形の場合は、通常、射出圧力50〜1000Kg/c
2、好ましくは80〜600Kg/cm2、成形温度1
30〜200℃、好ましくは150〜180℃、時間1
0〜120秒、好ましくは15〜60秒の条件で成形さ
れる。その後、それぞれの成形手法において必要に応じ
て後硬化を加えることができる。
Next, a resin body 6 as shown in FIG. 11 is formed on the lead frame 1. The molding of the resin main body can be obtained by mounting the lead frame 1 on a molding die and insert-molding an epoxy resin or the like into the cavity of the die by transfer molding or injection molding. The transfer molding conditions vary depending on the resin used, but in the case of an epoxy resin as an example, the molding pressure is usually 50 to 300 Kg / cm 2 , preferably 100 to
Pressure heating is performed under the conditions of 170 Kg / cm 2 , temperature of 130 to 200 ° C., preferably 150 to 180 ° C., and time of 10 to 120 seconds, preferably 15 to 60 seconds. In the case of injection molding, the injection pressure is usually 50 to 1000 Kg / c.
m 2 , preferably 80 to 600 Kg / cm 2 , molding temperature 1
30 to 200 ° C, preferably 150 to 180 ° C, time 1
It is molded under the condition of 0 to 120 seconds, preferably 15 to 60 seconds. Thereafter, post-curing can be added as necessary in each molding technique.

【0022】このようにして得られた樹脂本体6は、図
11に示される如く中空部を有しており、この中空部の
内底面7は半導体チップを接合する接合面として機能す
る。また、中空部には段差を有しており、この段差の肩
部に前記リードフレーム1のインナーリード2の上表面
が中空部に対して露出されている。そしてリードフレー
ム1の途中部4は樹脂本体6内に埋設された状態となっ
ている。さらにアウターリード3の先端は樹脂本体6の
底面に露出されている。アウターリード3の最先端は他
のアウターリードと互いに連結された状態となっている
ので、このアウターリードの先端を切断することにより
半導体装着用中空パッケージを得ることができる。ま
た、アウターリード先端切断位置を選択することにより
アウターリードを樹脂本体の外周縁部から突出しない形
状とすることもできるし、アウターリードを樹脂本体の
外周縁部から突出した形状とすることもできる。底面に
露出したアウターリードの形状は、図3に示されるリー
ドフレームの場合は図12、図13、図14に、図5に
示されるリードフレームの場合は図15に示される様な
形状となる。本形状にすることにより、リードと樹脂の
密着性を向上させ、底面からのリード剥離、変形を防止
することが可能となる。
The resin body 6 thus obtained has a hollow portion as shown in FIG. 11, and the inner bottom surface 7 of this hollow portion functions as a joining surface for joining the semiconductor chips. Further, the hollow portion has a step, and the upper surface of the inner lead 2 of the lead frame 1 is exposed to the hollow portion at the shoulder of the step. The middle part 4 of the lead frame 1 is embedded in the resin body 6. Further, the tips of the outer leads 3 are exposed on the bottom surface of the resin body 6. Since the outermost end of the outer lead 3 is connected to the other outer leads, a hollow package for semiconductor mounting can be obtained by cutting the tip of the outer lead. Further, by selecting the outer lead tip cutting position, the outer lead can be made not to project from the outer peripheral edge of the resin body, or the outer lead can be made to project from the outer peripheral edge of the resin body. . The outer lead exposed on the bottom surface has a shape as shown in FIGS. 12, 13, and 14 in the case of the lead frame shown in FIG. 3, and as shown in FIG. 15 in the case of the lead frame shown in FIG. . By adopting this shape, it is possible to improve the adhesion between the lead and the resin and prevent the lead from peeling off and deforming from the bottom surface.

【0023】この様にして得られた半導体素子装着用樹
脂製中空パッケージに対して半導体素子を装着して回路
基板に実装する手順を以下に説明する。図16に示す様
に、まず、樹脂本体6の中空部の内底面7に半導体素子
8を銀ペースト等の接着材により装着する。ここで用い
られる半導体素子8は、たとえばビデオカメラ、デジタ
ルカメラ等に用いられるCCD、CMOSなどの固体撮
像素子であるが、他の用途に用いられる論理回路やメモ
リーであっても構わない。次に、半導体素子8とインナ
ーリード2とを金又はアルミニウムによる細線で構成さ
れたワイヤー9をループ形状に張ることで導通させる。
そして、中空部の上面にガラス板からなる蓋体10を装
着して中空部を気密封止する。この蓋体10の装着は、
樹脂本体6の外上面の開口周縁部に接着材を塗布して蓋
体を搭載することにより行われる。この様にして得られ
た半導体装置は、剥離し難い高い密着性を持ったアウタ
ーリードが装置底面とほぼ面を一にして露出された構造
となっているため、半田接合時の導通信頼性が高い、回
路基板への実装が可能となる。
A procedure for mounting a semiconductor element on the resin-made hollow package for mounting a semiconductor element thus obtained and mounting it on a circuit board will be described below. As shown in FIG. 16, first, the semiconductor element 8 is attached to the inner bottom surface 7 of the hollow portion of the resin body 6 with an adhesive such as silver paste. The semiconductor element 8 used here is a solid-state image pickup element such as CCD or CMOS used in, for example, a video camera, a digital camera or the like, but may be a logic circuit or a memory used for other purposes. Next, the semiconductor element 8 and the inner lead 2 are electrically connected by stretching a wire 9 made of a fine wire made of gold or aluminum in a loop shape.
Then, the lid 10 made of a glass plate is attached to the upper surface of the hollow portion to hermetically seal the hollow portion. This lid 10 is attached
This is performed by applying an adhesive material to the peripheral edge of the opening on the outer upper surface of the resin body 6 and mounting the lid. The semiconductor device obtained in this manner has a structure in which the outer leads having high adhesion that are difficult to peel off are exposed so that the outer surface of the device is almost flush with the bottom surface of the device. Higher mounting on a circuit board is possible.

【0024】[0024]

【発明の効果】本発明によれば、小型表面実装型タイプ
で、回路基板に対して接合信頼性が高い半導体チップ装
着用中空パッケージを提供することができる。
According to the present invention, it is possible to provide a small-sized surface mount type hollow package for mounting a semiconductor chip, which has a high bonding reliability with respect to a circuit board.

【図面の簡単な説明】[Brief description of drawings]

【図1】SOP型中空パッケージの断面概略図である。FIG. 1 is a schematic sectional view of an SOP type hollow package.

【図2】SON型中空パッケージの断面概略図である。FIG. 2 is a schematic sectional view of a SON type hollow package.

【図3】本発明で用いられるリードフレーム(SON
型)平面図の一例である。
FIG. 3 is a lead frame (SON) used in the present invention.
It is an example of a (type) plan view.

【図4】図3の縦方向正面から見たリードフレームの断
面図である。
4 is a cross-sectional view of the lead frame as viewed from the front in the vertical direction of FIG.

【図5】本発明で用いられるリードフレーム(QFN
型)平面図の一例である。
FIG. 5 is a lead frame (QFN) used in the present invention.
It is an example of a (type) plan view.

【図6】本発明で用いられるリードの正面部分拡大図の
一例である。
FIG. 6 is an example of an enlarged view of a front portion of a lead used in the present invention.

【図7】本発明で用いられるリード裏面の部分拡大図の
一例である。(矩形状ハーフプレス)
FIG. 7 is an example of a partially enlarged view of the back surface of the lead used in the present invention. (Rectangular half press)

【図8】本発明で用いられるリード裏面の部分拡大図の
別の例である。(半長円形状ハーフプレス)
FIG. 8 is another example of a partially enlarged view of the back surface of the lead used in the present invention. (Semi-oval half press)

【図9】本発明で用いられるリードの正面部分拡大図の
他の例である。(半円形状ハーフプレス)
FIG. 9 is another example of a front portion enlarged view of a lead used in the present invention. (Semi-circular half press)

【図10】本発明で用いられるリード裏面の部分拡大図
の他の例である。(半円形状ハーフプレス)
FIG. 10 is another example of a partially enlarged view of the back surface of the lead used in the present invention. (Semi-circular half press)

【図11】本発明の中空パッケージ成形品の断面正面図
の一例である。
FIG. 11 is an example of a sectional front view of the hollow package molded product of the present invention.

【図12】本発明の中空パッケージ成形品(SON型)
の裏面図の一例である。(矩形状ハーフプレス)
FIG. 12: Hollow package molded product of the present invention (SON type)
3 is an example of a back view of FIG. (Rectangular half press)

【図13】本発明の中空パッケージ成形品(SON型)
部分裏面図の他の例である。(半長円形状ハーフプレ
ス)
FIG. 13: Hollow package molded product of the present invention (SON type)
It is another example of a partial rear view. (Semi-oval half press)

【図14】本発明の中空パッケージ成形品(SON型)
部分裏面図の他の例である。(半円形状ハーフプレス)
FIG. 14: Hollow package molded product (SON type) of the present invention
It is another example of a partial rear view. (Semi-circular half press)

【図15】本発明の中空パッケージ成形品(QFN型)
部分裏面図の一例である。(矩形状ハーフプレス)
FIG. 15 is a hollow package molded product (QFN type) of the present invention.
It is an example of a partial rear view. (Rectangular half press)

【図16】本発明の中空パッケージ成形品を用いた半導
体装置裏面図の一例である。
FIG. 16 is an example of a rear view of a semiconductor device using the hollow package molded product of the present invention.

【符号の説明】[Explanation of symbols]

1 リードフレーム 2 インナーリード 3 アウターリード 4 リード屈曲部 5 ハーフプレス部 6 樹脂本体 7 内底面 8 半導体素子 9 ワイヤー 10 蓋体 t リード厚み h0 ハーフプレス深さ W アウターリード幅 r0 屈曲部内径 1 lead frame 2 inner lead 3 outer leads 4 Lead bend 5 Half press section 6 resin body 7 Inner bottom 8 Semiconductor elements 9 wires 10 Lid t Lead thickness h0 Half press depth W outer lead width r0 Bending part inner diameter

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 リードの上表面が中空部に露出したイン
ナーリードと、インナーリードに連なり、リードの下表
面がパッケージ底面に沿って露出したアウターリードを
有する中空パッケージであって、該アウターリードのパ
ッケージ底面露出部のリード厚み方向下端部において、
少なくとも一部のリード幅が狭くされ、狭くされた該リ
ード下端部に樹脂が存在していることを特徴とする半導
体素子装着用樹脂製中空パッケージ。
1. A hollow package having an inner lead whose upper surface is exposed in the hollow portion and an outer lead which is continuous with the inner lead and whose lower surface is exposed along the bottom surface of the package. At the lower end of the exposed thickness of the package in the lead thickness direction,
A resin hollow package for mounting a semiconductor element, wherein at least a part of a lead has a narrowed width, and resin is present at the narrowed lower end portion of the lead.
【請求項2】 前記リード幅が狭くされたアウターリー
ドのパッケージ底面露出部が、リード厚み方向下端部を
ハーフプレスして製作されていることを特徴とする請求
項1に記載の半導体素子装着用樹脂製中空パッケージ。
2. The semiconductor element mounting device according to claim 1, wherein the exposed portion of the package bottom surface of the outer lead whose lead width is narrowed is manufactured by half-pressing the lower end portion in the lead thickness direction. Hollow resin package.
JP2002030194A 2002-02-07 2002-02-07 Hollow package for loading semiconductor element Pending JP2003234425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002030194A JP2003234425A (en) 2002-02-07 2002-02-07 Hollow package for loading semiconductor element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002030194A JP2003234425A (en) 2002-02-07 2002-02-07 Hollow package for loading semiconductor element

Publications (1)

Publication Number Publication Date
JP2003234425A true JP2003234425A (en) 2003-08-22

Family

ID=27774037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002030194A Pending JP2003234425A (en) 2002-02-07 2002-02-07 Hollow package for loading semiconductor element

Country Status (1)

Country Link
JP (1) JP2003234425A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006032703A (en) * 2004-07-16 2006-02-02 Yoshikawa Kogyo Co Ltd Resin hollow package for housing semiconductor
JP2008140944A (en) * 2006-11-30 2008-06-19 Nichia Chem Ind Ltd Light-emitting device, and its manufacturing method
JP2008235559A (en) * 2007-03-20 2008-10-02 Mitsui Chemicals Inc Hollow package and its manufacturing method
JP2008252136A (en) * 2004-11-30 2008-10-16 Nichia Corp Resin forming body and surface mount type light-emitting device, and manufacturing method thereof
JP2011014661A (en) * 2009-06-30 2011-01-20 Canon Inc Method of manufacturing package, and semiconductor device
US9502624B2 (en) 2006-05-18 2016-11-22 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10116952A (en) * 1996-10-09 1998-05-06 Mitsui Chem Inc Semiconductor chip mounting package, semiconductor device and its manufacturing method
JP2001015668A (en) * 1999-07-02 2001-01-19 Mitsubishi Electric Corp Resin-sealed semiconductor package

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10116952A (en) * 1996-10-09 1998-05-06 Mitsui Chem Inc Semiconductor chip mounting package, semiconductor device and its manufacturing method
JP2001015668A (en) * 1999-07-02 2001-01-19 Mitsubishi Electric Corp Resin-sealed semiconductor package

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006032703A (en) * 2004-07-16 2006-02-02 Yoshikawa Kogyo Co Ltd Resin hollow package for housing semiconductor
JP2008252136A (en) * 2004-11-30 2008-10-16 Nichia Corp Resin forming body and surface mount type light-emitting device, and manufacturing method thereof
JP2011097094A (en) * 2004-11-30 2011-05-12 Nichia Corp Resin molding and surface-mount light-emitting device
US9502624B2 (en) 2006-05-18 2016-11-22 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
US9634204B2 (en) 2006-05-18 2017-04-25 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
US9929318B2 (en) 2006-05-18 2018-03-27 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
US10263161B2 (en) 2006-05-18 2019-04-16 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
US10686102B2 (en) 2006-05-18 2020-06-16 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
US10971656B2 (en) 2006-05-18 2021-04-06 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
US11631790B2 (en) 2006-05-18 2023-04-18 Nichia Corporation Resin molding, surface mounted light emitting apparatus and methods for manufacturing the same
JP2008140944A (en) * 2006-11-30 2008-06-19 Nichia Chem Ind Ltd Light-emitting device, and its manufacturing method
JP2008235559A (en) * 2007-03-20 2008-10-02 Mitsui Chemicals Inc Hollow package and its manufacturing method
JP2011014661A (en) * 2009-06-30 2011-01-20 Canon Inc Method of manufacturing package, and semiconductor device

Similar Documents

Publication Publication Date Title
US7012277B2 (en) Semiconductor light emitting device
US6291274B1 (en) Resin molded semiconductor device and method for manufacturing the same
JPH11514149A (en) Electronic package with improved thermal properties
JPH04291948A (en) Semiconductor device and its manufacture; radiating fin
JP2005109100A (en) Semiconductor device and manufacturing method thereof
TW200401419A (en) Package for mounting a solid state image sensor
US5821628A (en) Semiconductor device and two-layer lead frame for it
US20090189261A1 (en) Ultra-Thin Semiconductor Package
JP2007521643A (en) Lead frame with passive device
JP2010524260A (en) Optical coupler package
JPH0444347A (en) Semiconductor device
JP2003234425A (en) Hollow package for loading semiconductor element
US7221042B2 (en) Leadframe designs for integrated circuit plastic packages
JP4359076B2 (en) Resin hollow package and semiconductor device using the same
US7075174B2 (en) Semiconductor packaging techniques for use with non-ceramic packages
US20030057529A1 (en) Package for a discrete device and manufacturing method of the same
JP2002134763A (en) Container for semiconductor light receiving element
JP3734225B1 (en) Surface mount type resin hollow package and semiconductor device using the same
JP3706074B2 (en) Hollow package for mounting semiconductor elements
JP5110567B2 (en) Plastic hollow package
JP3976706B2 (en) Resin hollow package and semiconductor device using the same
JP3554640B2 (en) Package for mounting semiconductor chip, semiconductor device and method of manufacturing the same
JP2008235559A (en) Hollow package and its manufacturing method
JP2005311099A (en) Semiconductor device and its manufacturing method
TWI287277B (en) Semiconductor device including molded wireless exposed drain packaging

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040705

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050719

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050726

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20051129