JPS60152034A - Method for flash removal - Google Patents

Method for flash removal

Info

Publication number
JPS60152034A
JPS60152034A JP714284A JP714284A JPS60152034A JP S60152034 A JPS60152034 A JP S60152034A JP 714284 A JP714284 A JP 714284A JP 714284 A JP714284 A JP 714284A JP S60152034 A JPS60152034 A JP S60152034A
Authority
JP
Japan
Prior art keywords
guide rails
tank
semiconductor device
flashes
liquid
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
JP714284A
Other languages
Japanese (ja)
Inventor
Shunichiro Fujioka
俊一郎 藤岡
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP714284A priority Critical patent/JPS60152034A/en
Publication of JPS60152034A publication Critical patent/JPS60152034A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/56Encapsulations, e.g. encapsulation layers, coatings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

PURPOSE:To improve a working atmosphere and to prevent it for molded products to be contaminated, and also, to prevent it for the humidity resistance thereof to lower by a method wherein liquid easy to vaporize is sprayed on flashes being accompanied with the molded products and the flashes are removed. CONSTITUTION:A pair of guide rails are laid in a sealed vessel 6. The guide rails 7 are constituted in such a way as to support a lead frame 3, whereon a semiconductor device 1 can be freely slided in a condition that the lead frame 3 has been bridged over between the guide rails 7, and the semiconductor device 1 is conveyed. Plural nozzles 8 are arranged upward and downward between the guide rails 7 in such a way as to oppose to flashes being accompanied with a package 2 and each nozzle 8 is connected to a feeding path 10, which feeds with a fluorochlorine substituent product 9 of hydrocarbon which is liquid easy to vaporize. The feeding path 10 is connected to a tank 12 through a pump 11. A recovery port 13 is openly provided on the ceiling wall of the vessel 6 and a recovery path 14 is connected to the tank 12 through a compressor 15 and a condensor 16.

Description

【発明の詳細な説明】 [技術分野] 本発明は、ぼり取り技術、特に、成形品のぼりを取り技
術に関し、たとえば、半導体装置の樹脂封止パッケージ
や低融点ガラスを用いたパンケージにおけるばりを除去
するのに利用して有効な技術に関する。
[Detailed Description of the Invention] [Technical Field] The present invention relates to a burr removal technique, in particular a technique for removing burrs from molded products, such as removing burrs from resin-sealed packages of semiconductor devices and pancakes using low-melting glass. Concerning effective techniques that can be used to

[背景技術] 半導体装置の製造において、樹脂封止パッケージに発生
したばりを除去する場合、くるみ粉やあんず粉等の微粉
末を高速でぼりに吹き付けて除去する方法や、水または
水に微粉末を混合してなる混合水をぼりに上方から吹き
付けて除去する方法が考えられる。
[Background technology] When removing burrs generated on resin-sealed packages in the manufacture of semiconductor devices, there are methods of removing burrs by spraying fine powder such as walnut flour or apricot flour on the burrs at high speed, or removing burrs with water or water. One possible method is to spray mixed water from above onto the streamer to remove it.

しかし、微粉末を吹き付ける方法においては、微粉末が
周囲に飛散しかつ騒音が激しいため、作業環境が低下し
てしまい、しかも、微粉末が製品を損傷したり付着した
りするため、後処理が必要となるという問題点が、また
、混合水を吹き付ける方法においては、混合率の管理が
困難であり、水溶液が飛散し、かつ製品の内部に水分が
侵入してしまうという問題点があることが、本発明者に
よって明らかにされた。
However, in the method of spraying fine powder, the fine powder scatters around and makes a lot of noise, which degrades the working environment.Furthermore, the fine powder can damage or adhere to the product, so post-processing is required. In addition, in the method of spraying mixed water, it is difficult to control the mixing ratio, and there are problems in that the aqueous solution scatters and moisture enters the inside of the product. , was revealed by the present inventor.

[発明の目的コ 本発明の目的は、作業環境が良好で、製品の汚染や耐湿
性の低下が防止できるぼり取り技術を提供することにあ
る。
[Purpose of the Invention] An object of the present invention is to provide a scraping technique that provides a good working environment and prevents product contamination and deterioration of moisture resistance.

本発明の前記ならびにその他の目的と新規な特徴は、本
明細書の記述および添付図面から明らかになるであろう
The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

し発明の概要] 本願におい−C開示される発明のうら代表的なものの概
要を簡単に説明すれば、次の通りである。
Summary of the Invention] A brief summary of the representative inventions disclosed in the present application is as follows.

すなわち、気化し易い液体をぼりに吹き(」けて除去す
るようにすることにより、微粉末の飛散や騒音の発生を
回避し、かつ、製品の内部に水分が侵入することを抑止
するようにしたものである。
In other words, by blowing liquids that easily evaporate to remove them, it is possible to avoid the scattering of fine powder and the generation of noise, and to prevent moisture from entering the inside of the product. This is what I did.

[実施例] 第1図は本発明のぼり取り技術の一実施例を説明するた
めの概略系統図であり、第2図は拡大部分正面図である
[Example] Fig. 1 is a schematic system diagram for explaining an embodiment of the rip-off technique of the present invention, and Fig. 2 is an enlarged partial front view.

本実施例において、このぼり取り装置は、半導体装置l
におりるレジンモールドされてなる樹脂封止パッケージ
2の外周においてリードフレーム3の表面およびダム4
との間等に発生したばり5を除去するものとして、構成
されている。
In this embodiment, this scraping device is a semiconductor device l.
The surface of the lead frame 3 and the dam 4 are located on the outer periphery of the resin-molded package 2.
It is configured to remove burrs 5 generated between the two.

この装置はほぼ密閉された槽6を備えており、槽6内に
は一対のガイドレール7が敷設されている。ガイドレー
ル7間は、半導体装置1がリードフレーム3を架橋した
状態で摺動自在に支持するようになっており、半導体装
置1を適当な手段(図示せず)により搬送させるように
なっている。
This device includes a tank 6 that is substantially sealed, and a pair of guide rails 7 are installed inside the tank 6. Between the guide rails 7, the semiconductor device 1 is configured to slidably support the lead frame 3 in a bridged state, and the semiconductor device 1 is transported by appropriate means (not shown). .

ガイドレール7間の上下には複数本のノズル8が半導体
装置1にお&3るパッケージ2のばり5に噴射1コを対
向するようにそれぞれ配設されており、各ノズル8には
、気化し易い液体としての炭化水素のフルオルクロル置
換体(以下、液という)9を供給する供給路10が接続
されている。この供給路10はポンプ11を介してタン
ク12に接続されている。
A plurality of nozzles 8 are disposed above and below between the guide rails 7 so as to direct one spray to the burr 5 of the package 2 attached to the semiconductor device 1. A supply path 10 for supplying a fluorochloro-substituted hydrocarbon (hereinafter referred to as liquid) 9 as a free liquid is connected thereto. This supply path 10 is connected to a tank 12 via a pump 11.

槽6の天井壁にはガス回収l」13が開設され、この回
収口13には回収路14が接続されている。
A gas recovery port 13 is provided on the ceiling wall of the tank 6, and a recovery path 14 is connected to this recovery port 13.

[JIIl 14は、コンプレッサ15、コンデン″1
1′16を介してタンク12に接続されている。
[JIIl 14 is compressor 15, condenser'' 1
1'16 to tank 12.

次に作用を説明する。Next, the action will be explained.

1ill送されて来た半導体装置1はそのパッケージ2
の外周において発生したばり5に対し、」ユニ両方に配
置した各ノズル8から液9を高速、高圧で吹きイ1けら
れる。液9を吹き付レノられると、その衝撃により、ば
り5はリードフレーム3の表面およびダム4との間から
容易に剥1’iljされ、パッケージ3から除去される
。このとき、l& 9は液状であるため、必要な質量を
有するにもかかわらず、パッケージ2やリードフレーム
3を損傷することはな(、また、わ)末のようにダム4
との間に詰ることもない。
1ill The semiconductor device 1 that was sent is its package 2.
A liquid 9 is sprayed at high speed and high pressure from each nozzle 8 arranged on both sides of the burr 5 generated on the outer periphery of the burr. When the liquid 9 is sprayed, the impact causes the burrs 5 to be easily peeled off from between the surface of the lead frame 3 and the dam 4, and removed from the package 3. At this time, since l&9 is in a liquid state, it does not damage the package 2 or lead frame 3, even though it has the necessary mass.
There is no need to get stuck between the two.

吹き付りられた液9は槽6の雰囲気温度で迅速に気化し
て殆ど全てガス状になる。したがって、液9がパッケー
ジ2の内部に浸透して半導体装置1の機11℃をfi′
Jなうという危惧は全くない。
The sprayed liquid 9 quickly vaporizes at the ambient temperature of the tank 6 and becomes almost entirely gaseous. Therefore, the liquid 9 permeates into the inside of the package 2 and heats the semiconductor device 1 at 11°C.
There is no fear that this will happen.

気化した炭化水素のフルオルクロル置換体(以下、単に
ガス9aという)は回収口13により吸い出され、コン
プレッサ15、二1ンデンサ16を経゛C液化されタン
ク12に回収される。タンク12において、液9は気液
分離され、再循環することになる。
The vaporized fluorochloro-substituted hydrocarbon (hereinafter simply referred to as gas 9a) is sucked out through a recovery port 13, liquefied by C through a compressor 15 and an indenser 16, and recovered into a tank 12. In the tank 12, the liquid 9 will be separated into gas and liquid and recirculated.

[効果] (1)、気化し易い液体を吹きイ]けてばりを除去する
ことにより、微粉末の吹き伺けの場合に発生ずる微粉末
の飛散や騒音の発生が回避できるため、作業環境が向上
でき、また、成形品の損傷や汚染がないため、後処理が
省略ないしは簡略化できる。
[Effects] (1) Blowing liquids that easily vaporize] By removing the burrs, it is possible to avoid the scattering of fine powder and the generation of noise that would occur when fine powder is blown, improving the working environment. In addition, since there is no damage or contamination of the molded product, post-processing can be omitted or simplified.

(2)、気化し易い液体を吹き付けることにより、水分
が成形品の内部に浸透することが防止できる。
(2) By spraying a liquid that easily evaporates, it is possible to prevent moisture from penetrating into the molded product.

(3)、水分の浸透が防止できるため、半導体装置のぼ
り取りに使用した場合、半導体装置の信頼性を向上する
ことができる。すなわち、水分の浸透は直ちに半導体装
置の機能をInなわずに使用中に障害を発生する傾向が
あるため、信頼性の低下の原因となる。
(3) Since penetration of moisture can be prevented, the reliability of the semiconductor device can be improved when used for scraping off the semiconductor device. That is, the penetration of moisture immediately impairs the functionality of the semiconductor device and tends to cause trouble during use, resulting in a decrease in reliability.

(4)、液体を吹き付Iするノズルを、ぼり除去すべき
試料の上下両方向に配置し、除去すべきぼりに対し、上
方向からと下方向から噴射液体により射撃するので、取
り除きがたいぼりであっても完全にそのばりを取り除く
ことができる。
(4) Nozzles for spraying liquid are arranged both above and below the sample to be removed, and the liquid is sprayed from above and below at the stream to be removed, so that no stream that cannot be removed can be removed. However, the burr can be completely removed.

以上本発明者によってなされた発明を実施例に基づき具
体的に説明したが、本発明は前記実施例に限定されるも
のではなく、その要旨を逸脱しない範囲で種々変更可能
であることばいうまでもない。
Although the invention made by the present inventor has been specifically explained above based on Examples, it goes without saying that the present invention is not limited to the Examples and can be modified in various ways without departing from the gist thereof. do not have.

ぼりに吹きイ【1りる気化し易い液体は、炭化水素のフ
ルオルクロル置換体に限らず、アルコール、アセトン等
のような揮発性の良好な液体およびこれらと水との混合
溶液や、窒素(N2)等安く安定なガス等を使用しても
よい。ガスは吹きイ」け時に液化しておくと、十分なf
P7撃力が得られるので、吹き付り時に液状で迅速に気
化するものであることが望ましい。
Liquids that easily vaporize are not limited to fluorochloro-substituted hydrocarbons, but also highly volatile liquids such as alcohol and acetone, mixed solutions of these and water, and nitrogen (N2). ) and other cheap and stable gases may be used. If the gas is liquefied at the time of blowing, sufficient f
Since a P7 impact force can be obtained, it is desirable that the spray be in a liquid state and quickly vaporize when sprayed.

なお、水とアルコールとの混合液を使用した場合、水は
アルコールの揮発により気化され易くなるので、成形品
内部への浸透は殆ど抑止される。
Note that when a mixed solution of water and alcohol is used, the water is easily vaporized due to volatilization of the alcohol, so that penetration into the interior of the molded product is almost inhibited.

ノズルの数、吹き付は方向、配置、構造等に限定はない
There are no limitations on the number of nozzles, the spray direction, arrangement, structure, etc.

[利用分野] 以上の説明では主として本発明者によってなされた発明
をその背景となった利用分野である樹脂封止パッケージ
におけるばりの除去に通用した場合について説明したが
、それに限定されるものではなく、たとえば、ハーメチ
ックパッケージにおける低融点ガラスに発生ずるばりの
除去や、その他、樹脂や低融点ガラスを用いた成形品、
封止切におけるばりの除去等に適用できる。
[Field of Application] In the above explanation, the invention made by the present inventor was mainly explained in the case where it was applied to the field of application which was the background of the invention, which was the removal of burrs in resin-sealed packages, but the present invention is not limited thereto. For example, removing burrs from low melting point glass in hermetic packages, molded products using resin or low melting point glass, etc.
It can be applied to removing burrs during seal cutting.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明のぼり取り方法の一実施例を説明するた
めの系統図、 第2図は拡大部分正面図である。 1・・・半導体装置、2・・・パッケージ、3・・・リ
ードフレーム、4・・・ダム、5・・・ぼり、6・・・
槽、7・・・ガイドレール、8・・・ノズル、9・・・
炭化水素のフルオルクロル置換体、10・・・流体供給
路、11・・・ポンプ、12・・・タンク、13・・・
回収口、14・・・回収路、15・・・コンプレッサ、
16・・・コンデンサ。
FIG. 1 is a system diagram for explaining one embodiment of the defrauding method of the present invention, and FIG. 2 is an enlarged partial front view. DESCRIPTION OF SYMBOLS 1...Semiconductor device, 2...Package, 3...Lead frame, 4...Dam, 5...Bori, 6...
Tank, 7... Guide rail, 8... Nozzle, 9...
Fluorochloro-substituted hydrocarbon, 10...Fluid supply path, 11...Pump, 12...Tank, 13...
Recovery port, 14... recovery path, 15... compressor,
16... Capacitor.

Claims (1)

【特許請求の範囲】 ■、成形品のぼりに気化し易い液体を吹き付けてばりを
除去することを特徴とするぼり取り方法。 2、液体は、炭化水素のフルオルクロル置換体であるこ
とを特徴とする特許請求の範囲第1項記載のぼり取り方
法。 3、液体の吹き付けは、成形品のぼりに対し少なくとも
上方向および下方向の2方向から行うことを特徴とする
特許請求の範囲第1項記載のぼり取り方法。
[Claims] (1) A method for removing burrs, which comprises spraying a liquid that easily vaporizes onto the burrs of a molded product to remove burrs. 2. The scraping method according to claim 1, wherein the liquid is a fluorochloro-substituted hydrocarbon. 3. The method of claim 1, characterized in that the liquid is sprayed onto the molded product banner from at least two directions, upward and downward.
JP714284A 1984-01-20 1984-01-20 Method for flash removal Pending JPS60152034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP714284A JPS60152034A (en) 1984-01-20 1984-01-20 Method for flash removal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP714284A JPS60152034A (en) 1984-01-20 1984-01-20 Method for flash removal

Publications (1)

Publication Number Publication Date
JPS60152034A true JPS60152034A (en) 1985-08-10

Family

ID=11657820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP714284A Pending JPS60152034A (en) 1984-01-20 1984-01-20 Method for flash removal

Country Status (1)

Country Link
JP (1) JPS60152034A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6386529A (en) * 1986-09-30 1988-04-16 Toshiba Corp Flash removing device for resin-sealed semiconductor
US6178610B1 (en) * 1997-09-11 2001-01-30 Piller Entgrattenchnik Gmbh Method of and apparatus for removing burrs from metal work-piece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6386529A (en) * 1986-09-30 1988-04-16 Toshiba Corp Flash removing device for resin-sealed semiconductor
US6178610B1 (en) * 1997-09-11 2001-01-30 Piller Entgrattenchnik Gmbh Method of and apparatus for removing burrs from metal work-piece

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