JPH0742756Y2 - Printing plate for screen printing - Google Patents

Printing plate for screen printing

Info

Publication number
JPH0742756Y2
JPH0742756Y2 JP18603087U JP18603087U JPH0742756Y2 JP H0742756 Y2 JPH0742756 Y2 JP H0742756Y2 JP 18603087 U JP18603087 U JP 18603087U JP 18603087 U JP18603087 U JP 18603087U JP H0742756 Y2 JPH0742756 Y2 JP H0742756Y2
Authority
JP
Japan
Prior art keywords
printing
plate
mask
bent portion
frame
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.)
Expired - Lifetime
Application number
JP18603087U
Other languages
Japanese (ja)
Other versions
JPH0191570U (en
Inventor
保浩 岩佐
雅之 高坂
千里 山路
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.)
Sanken Electric Co Ltd
Original Assignee
Sanken Electric Co 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 Sanken Electric Co Ltd filed Critical Sanken Electric Co Ltd
Priority to JP18603087U priority Critical patent/JPH0742756Y2/en
Publication of JPH0191570U publication Critical patent/JPH0191570U/ja
Application granted granted Critical
Publication of JPH0742756Y2 publication Critical patent/JPH0742756Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】 産業上の利用分野 本考案は印刷版、特に屈曲部を有する被印刷体に良好に
印刷できるスクリーン印刷用印刷版に関する。
TECHNICAL FIELD The present invention relates to a printing plate, and more particularly to a screen printing printing plate capable of favorably printing on an object to be printed having a bent portion.

従来の技術 厚膜導体ペースト、厚膜抵抗ペースト、ペースト半田等
の印刷材をマスク上に供給し、マスク上に形成された開
口部より印刷材を押し出してリードフレームである被印
刷体(5)の表面に転写するスクリーン印刷は公知であ
る。第3図は、従来のスクリーン印刷用印刷版で被印刷
体(5)である板部(6)上にスクリーン印刷にてペー
スト半田を印刷する状態を示す断面図である。印刷に使
用するペースト半田は半導体素子等の固着に使用され
る。図示を省略するが、被印刷体(5)は実際には並行
に連結された多数個の板部(6)を備えている。
2. Description of the Related Art Printing materials such as thick-film conductor paste, thick-film resistance paste, and paste solder are supplied onto a mask, and the printing material is extruded through an opening formed on the mask, which is a lead frame (5). Screen printing for transfer to the surface of the is known. FIG. 3 is a cross-sectional view showing a state in which paste solder is printed by screen printing on a plate portion (6) which is a printing target (5) with a conventional screen printing printing plate. The paste solder used for printing is used for fixing semiconductor elements and the like. Although not shown, the printing medium (5) is actually provided with a large number of plate portions (6) connected in parallel.

印刷版(1)はステンレス等の金属薄板から成り、印刷
すべき形状に合せた開口(4)が形成されたマスク
(2)と、マスク(2)の周部に環状に設けられ、断面
四角形の形状を有する枠体(3)とから成る。マスク
(2)の表面が弛みを発生せず平坦面を維持するよう
に、マスク(2)は枠体(3)の底面に張られて貼着さ
れる。固定台(12)上に配置される被印刷体(5)は板
部(6)と、板部(6)から導出された外部リード
(8)とを有し、外部リード(8)と板部(6)との間
に屈曲部(9)が形成される。転写の際は、マスク
(2)を被印刷面となる板部(6)の上面(6a)に略当
接させる。続いて、へらの作用を行うスキージによりマ
スク(2)を被印刷面に強く押し付けながら、マスク
(2)上のペースト半田を開口(4)より押し出し、板
部(6)に付着させる。スクリーン印刷は他の印刷方法
に比べて量産性等に優れている。
The printing plate (1) is made of a thin metal plate such as stainless steel, and is provided with a mask (2) having an opening (4) corresponding to the shape to be printed, and an annular shape provided around the periphery of the mask (2). And a frame (3) having the shape of. The mask (2) is stretched and attached to the bottom surface of the frame body (3) so that the surface of the mask (2) does not loosen and maintains a flat surface. The object to be printed (5) arranged on the fixed base (12) has a plate portion (6) and external leads (8) led out from the plate portion (6), and the external lead (8) and the plate. A bent portion (9) is formed between the bent portion (6) and the portion (6). At the time of transfer, the mask (2) is substantially brought into contact with the upper surface (6a) of the plate portion (6) which is the surface to be printed. Subsequently, the squeegee acting as a spatula strongly presses the mask (2) against the surface to be printed, and the paste solder on the mask (2) is pushed out through the opening (4) and attached to the plate portion (6). Screen printing is superior to other printing methods in mass productivity.

考案が解決すべき問題点 ところで、板部(6)上に複数の半導体素子や回路基板
を固着した半導体装置では、高集積化のため屈曲部
(9)の近傍に半導体素子や回路基板を固着することが
要求される。しかし、枠体(3)がその厚みl1分だけマ
スク(2)の内側に延び出し、ペースト半田を屈曲部
(9)に接近した位置に付着できない。このため、従来
のスクリーン印刷では屈曲部(9)の近傍に印刷するこ
とが困難であった。上記のような半導体装置のみなら
ず、1個の半導体素子を固着した半導体装置でも支持板
を小面積化した場合、同様の問題が生ずる。
Problems to be Solved by the Invention By the way, in a semiconductor device in which a plurality of semiconductor elements or circuit boards are fixed on the plate portion (6), the semiconductor elements or circuit boards are fixed near the bent portion (9) for high integration. Required to do so. However, the frame body (3) extends to the inside of the mask (2) by the thickness l 1 , and the paste solder cannot be attached to the position close to the bent portion (9). Therefore, it is difficult to print in the vicinity of the bent portion (9) by the conventional screen printing. The same problem occurs not only in the semiconductor device as described above but also in the semiconductor device having one semiconductor element fixed thereto when the supporting plate has a small area.

そこで、本考案者は上記の問題を解決するため枠体
(3)の厚みl1を薄くすると共に、枠体(3)にできる
だけ接近した位置に開口(4)を設ける方法を試みた。
しかし、枠体(3)の厚みl1を単に薄くすると、印刷版
(1)の強度が低下する。このため、被印刷体(5)上
にセットしたとき枠体(3)の安定性が悪くなり、所望
の位置に良好な印刷を行えない難点があった。また、ス
クリーン印刷では印刷材を付着させるために、マスク
(2)を被印刷面に強く押圧する必要がある。しかし、
スキージをマスク(2)上に押圧したとき、枠体(3)
の近傍ではスキージの押圧によるマスク(2)の垂直方
向への変形量は中心部に比べて小さくなる。このため、
枠体(3)に近接するマスク(2)の周縁部は被印刷面
に強く当接できない。良好に印刷するため開口(4)と
枠体(3)との距離lを実際には2mm以上確保する必要
がある。従って、開口(4)を枠体(3)に近接させる
にも限界があった。以上のように、従来では屈曲部
(9)の近傍には良好に印刷を行うことが困難であっ
た。
In order to solve the above problem, the present inventor tried a method of reducing the thickness l 1 of the frame body (3) and providing the opening (4) at a position as close as possible to the frame body (3).
However, if the thickness l 1 of the frame body (3) is simply reduced, the strength of the printing plate (1) will decrease. For this reason, the stability of the frame body (3) when set on the printing medium (5) deteriorates, and there is a problem that good printing cannot be performed at a desired position. Further, in screen printing, it is necessary to strongly press the mask (2) against the surface to be printed in order to attach the printing material. But,
When the squeegee is pressed on the mask (2), the frame (3)
In the vicinity of, the amount of vertical deformation of the mask (2) due to the pressing of the squeegee is smaller than that in the central portion. For this reason,
The peripheral edge of the mask (2) close to the frame (3) cannot strongly contact the surface to be printed. In order to print well, it is necessary to secure a distance 1 between the opening (4) and the frame body (3) of 2 mm or more in practice. Therefore, there is a limit to how close the opening (4) can be to the frame body (3). As described above, conventionally, it has been difficult to perform good printing in the vicinity of the bent portion (9).

そこで、本考案では上記問題を解決し屈曲部近傍に良好
にスクリーン印刷できるスクリーン印刷用印刷版を提供
することを目的とする。
Therefore, it is an object of the present invention to provide a screen printing printing plate that solves the above problems and can perform good screen printing in the vicinity of a bent portion.

問題点を解決するための手段 本考案のスクリーン印刷用印刷版は、固定台(12)と、
枠体(25)及び枠体(25)に固定され且つ開口(24)が
形成されたマスク(23)とを備えている。板部(6)及
び板部(6)から上方に屈曲して延在する屈曲部(9)
とを備えた被印刷体(5)の板部(6)を固定台(12)
上に配置する。スクリーン印刷を行う場合、板部(6)
の上面又は板部(6)上に設けられた部材の上面に形成
される被印刷面にマスク(23)を対向して配置する。被
印刷体(5)の屈曲部(9)の内側でマスク(23)の外
縁部を屈曲部(9)に沿って上方に折り曲げて折曲げ部
(22)を形成し、折曲げ部(22)の外側に枠体(25)の
内側面(25b)を固定する。被印刷体(5)の板部
(6)にマスク(23)を対向して配置すると、屈曲部
(9)の外側で固定台(12)から一定距離離間して枠体
(25)が固定台(12)の上方に配置される。
Means for Solving Problems The printing plate for screen printing of the present invention comprises a fixing base (12),
A frame (25) and a mask (23) fixed to the frame (25) and having an opening (24) formed therein. A plate portion (6) and a bent portion (9) bent and extending upward from the plate portion (6)
The plate portion (6) of the printing object (5) having
Place it on top. When performing screen printing, the plate part (6)
The mask (23) is arranged so as to face the surface to be printed formed on the upper surface or the upper surface of the member provided on the plate portion (6). Inside the bent portion (9) of the printing medium (5), the outer edge of the mask (23) is bent upward along the bent portion (9) to form a bent portion (22). ), The inner side surface (25b) of the frame (25) is fixed to the outside. When the mask (23) is arranged so as to face the plate portion (6) of the object to be printed (5), the frame body (25) is fixed outside the bending portion (9) by a certain distance from the fixing base (12). It is arranged above the table (12).

作用 肉厚の枠体(25)が印刷版の保持部として作用し、屈曲
部(9)に隣接する肉薄の折曲げ部(22)の外側に枠体
(25)の内側面(25b)を連結するので、板部(6)の
屈曲部(9)近傍に開口(24)を形成することができ
る。
Action The thick frame (25) acts as a holding part for the printing plate, and the inner surface (25b) of the frame (25) is placed outside the thin bent part (22) adjacent to the bent part (9). Since they are connected, the opening (24) can be formed near the bent portion (9) of the plate portion (6).

実施例 以下、本考案の実施例を第1図及び第2図について説明
する。これらの図面では第3図に示す箇所と同一の部分
については同一の符号を付し、説明を省略する。
Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In these drawings, the same parts as those shown in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted.

第1図は、スクリーン印刷を行うために、被印刷体
(5)上に印刷版(21)を載置した状態を示す本考案に
よる実施例の断面図である。固定台(12)には被印刷体
(5)が載置され、被印刷体(5)の形状に合わせて、
リードフレームの板部(支持板)(6)を載置する第1
の載置面(13)及び外部リード(8)を載置する第2の
載置面(14)が固定台(12)に形成される。また、第1
の載置面(13)と第2の載置面(14)との間には被印刷
体(5)の屈曲部(9)に対応する段差面(15)が形成
される。被印刷体(5)の下面は固定台(12)の第1の
載置面(13)及び第2の載置面(14)に密着する。第1
図には2個の被印刷体(5)を対向させて固定台(12)
に配置した例を示すが、実際には、多数の被印刷体
(5)が2列に対向して固定台(12)上に配置される。
FIG. 1 is a sectional view of an embodiment according to the present invention showing a state in which a printing plate (21) is placed on a printing medium (5) for screen printing. The printing object (5) is placed on the fixed base (12), and according to the shape of the printing object (5),
First for mounting the plate portion (support plate) (6) of the lead frame
The mounting surface (13) and the second mounting surface (14) on which the external leads (8) are mounted are formed on the fixed base (12). Also, the first
A step surface (15) corresponding to the bent portion (9) of the printing medium (5) is formed between the mounting surface (13) and the second mounting surface (14). The lower surface of the printing medium (5) is in close contact with the first mounting surface (13) and the second mounting surface (14) of the fixed base (12). First
In the figure, two printing objects (5) are opposed to each other and are fixed to each other (12).
However, in practice, a large number of print substrates (5) are arranged on the fixed base (12) so as to face each other in two rows.

本実施例の従来例と異なる点は印刷版(21)の形状にあ
る。印刷版(21)は断面四角形の枠体(25)と、枠体
(25)に固定されるマスク(23)とを有する。被印刷体
(5)の屈曲部(9)の内側でマスク(23)の外縁部を
屈曲部(9)に沿って上方に折り曲げて折曲げ部(22)
を形成し、マスク(23)の一部を構成する折曲げ部(2
2)の外側に枠体(25)の内側面(25b)を固定する。
The difference of this embodiment from the conventional example is the shape of the printing plate (21). The printing plate (21) has a frame body (25) having a rectangular cross section, and a mask (23) fixed to the frame body (25). Inside the bent portion (9) of the printed material (5), the outer edge portion of the mask (23) is bent upward along the bent portion (9) to bend the bent portion (22).
Forming a part of the mask (23) and forming a bent part (2
Fix the inner surface (25b) of the frame (25) to the outside of 2).

マスク(23)はエッチングにより所望形状の開口(24)
を形成したステンレス製の板材から成る。マスク(23)
は柔軟性が小さく容易には変形しない。折曲げ部(22)
の先端部分は枠体(25)の内側面(25b)に固着され
る。枠体(25)の底面(25a)は第2の載置面(14)か
ら一定距離離間して配置される。枠体(25)の外側面
(25c)は屈曲部(9)の外側且つ上方に配置される。
第1図に示すように、被印刷体(5)の板部(6)にマ
スク(23)を対向して配置すると、印刷版(21)のマス
ク(23)は板部(6)の上面(6a)の上方に配置され、
屈曲部(9)の外側で固定台(12)から一定距離離間し
て枠体(25)が固定台(12)の上方に配置される。
The mask (23) is etched to form the opening (24) of the desired shape.
It is made of a stainless steel plate material. Masks (23)
Is less flexible and does not deform easily. Folding part (22)
The tip portion of is fixed to the inner surface (25b) of the frame (25). The bottom surface (25a) of the frame body (25) is arranged at a fixed distance from the second mounting surface (14). The outer side surface (25c) of the frame body (25) is arranged outside and above the bent portion (9).
As shown in FIG. 1, when the mask (23) is arranged so as to face the plate portion (6) of the object to be printed (5), the mask (23) of the printing plate (21) is the upper surface of the plate portion (6). Placed above (6a),
The frame body (25) is arranged above the fixed base (12) outside the bent portion (9) with a certain distance from the fixed base (12).

この状態では、被印刷面となる板部(6)の上面(6a)
とマスク(23)との間隔l2が外部リード(8)の上面
(8a)と枠体(25)の底面(25a)との間隔l3より小さ
い。実際の間隔l2はl2≒0であり、マスク(23)は板部
(6)の上面(6a)に当接し、枠体(25)が外部リード
(8)の上面(8a)から若干浮いた状態となる。
In this state, the upper surface (6a) of the plate portion (6) which is the printing surface
And the mask (23) have a distance l 2 smaller than the distance l 3 between the upper surface (8a) of the outer lead (8) and the bottom surface (25a) of the frame body (25). The actual distance l 2 is l 2 ≈0, the mask (23) contacts the upper surface (6a) of the plate portion (6), and the frame body (25) is slightly above the upper surface (8a) of the external lead (8). It will be in a floating state.

第2図は印刷版(21)を使用してスクリーン印刷を行う
状態を示す斜視図である。印刷材としてペースト半田
(図示せず)をマスク(23)上に載置し、マスク(23)
の上面でスキージ(40)を滑動することにより、ペース
ト半田が開口(24)より下方に押し出され、板部(6)
上に印刷される。ここで、屈曲部(9)の近傍にある開
口(24)からは回路基板の固着に使用されるペースト半
田が印刷され、屈曲部(9)から離れた位置に設けられ
た開口(24)からは半導体素子(図示せず)の固着に使
用されるペースト半田が板部(6)上に印刷される。
FIG. 2 is a perspective view showing a state where screen printing is performed using the printing plate (21). Paste solder (not shown) as a printing material is placed on the mask (23), and the mask (23)
By sliding the squeegee (40) on the upper surface of the plate, the paste solder is pushed downward from the opening (24), and the plate portion (6)
Printed on. Here, paste solder used for fixing the circuit board is printed from the opening (24) near the bent portion (9), and the paste solder used for fixing the circuit board is opened from the opening (24) provided at a position apart from the bent portion (9). The paste solder used for fixing the semiconductor element (not shown) is printed on the plate portion (6).

本実施例は以下の効果を有する。This embodiment has the following effects.

1.マスク(23)の折曲げ部(22)の厚みを薄く形成でき
るので、屈曲部(9)の近傍の開口(24)内に十分な量
のペースト半田を供給して、良好な印刷を行うことがで
きる。
1. Since the thickness of the bent portion (22) of the mask (23) can be made thin, a sufficient amount of paste solder can be supplied into the opening (24) near the bent portion (9) for good printing. It can be carried out.

2.被印刷体(5)に対してマスク(23)を確実に当接で
き、良好な印刷が可能となる。またマスク(23)を平坦
に張ることができる。
2. The mask (23) can be reliably brought into contact with the object to be printed (5), and good printing can be performed. Further, the mask (23) can be stretched flat.

3.十分な強度の肉厚で枠体(25)を成形して、十分な強
度を有し長い耐用期間の印刷版(21)が得られる。
3. The frame (25) is molded with a wall thickness of sufficient strength to obtain a printing plate (21) having sufficient strength and a long service life.

本考案の上記実施例は変更が可能である。例えば、本考
案のスクリーン印刷用印刷版(21)では、板部(6)上
に固着した回路基板、半導体素子等の上面に印刷を行う
場合にも有効である。印刷材は、ペースト半田に限られ
ず、アルミニウム等の他の導電性接着材を使用できる。
また、マスク(23)はメタルマスクの他にメッシュマス
ク等も使用できる。また、折曲げ部(22)の肉厚と枠体
(25)の肉厚は必要に応じて種々の変形が可能である。
The above embodiment of the present invention can be modified. For example, the screen printing printing plate (21) of the present invention is also effective for printing on the upper surface of a circuit board, a semiconductor element, or the like fixed on the plate portion (6). The printing material is not limited to paste solder, and other conductive adhesive materials such as aluminum can be used.
Further, as the mask (23), a mesh mask or the like can be used in addition to the metal mask. Further, the wall thickness of the bent portion (22) and the wall thickness of the frame body (25) can be variously modified as necessary.

考案の効果 以上のように、本考案によれば屈曲部を有する被印刷体
の屈曲部近傍への印刷を良好に行うことができる。
Effects of the Invention As described above, according to the present invention, it is possible to favorably perform printing in the vicinity of the bent portion of the printing medium having the bent portion.

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

第1図は被印刷体であるリードフレーム上に印刷版を載
置した状態を示す本考案による実施例を示すスクリーン
印刷用印刷版の断面図、第2図はこの斜視図、第3図は
従来のスクリーン印刷用印刷版の断面図である。 (23)……マスク、(5)……被印刷体、(6)……板
部、(8)……外部リード、(8a)……上面、(9)…
…屈曲部、(21)……印刷版、(22)……折曲げ部、
(25)……枠体、(25a)……底面、(25b)……内側
面、(25c)……外側面、
FIG. 1 is a cross-sectional view of a printing plate for screen printing showing an embodiment according to the present invention showing a state in which a printing plate is placed on a lead frame which is an object to be printed, FIG. 2 is this perspective view, and FIG. 3 is It is sectional drawing of the conventional printing plate for screen printing. (23) ... mask, (5) ... printed object, (6) ... plate part, (8) ... external lead, (8a) ... top surface, (9) ...
… Bending part, (21) …… printing plate, (22) …… bending part,
(25) …… Frame, (25a) …… Bottom, (25b) …… Inside, (25c) …… Outside,

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】固定台(12)と、枠体(25)及び該枠体
(25)に固定され且つ開口(24)が形成されたマスク
(23)とを備え、板部(6)及び該板部(6)から上方
に屈曲して延在する屈曲部(9)とを備えた被印刷体
(5)の前記板部(6)を前記固定台(12)上に配置
し、前記板部(6)の上面又は前記板部(6)上に設け
られた部材の上面に形成される被印刷面に前記マスク
(23)を対向して配置してスクリーン印刷を行うスクリ
ーン印刷用印刷版において、 前記被印刷体(5)の屈曲部(9)の内側で前記マスク
(23)の外縁部を前記屈曲部(9)に沿って上方に折り
曲げて折曲げ部(22)を形成し、 折曲げ部(22)の外側に前記枠体(25)の内側面(25
b)を固定し、 前記屈曲部(9)を越えて延在する前記枠体(25)の外
側面(25c)を前記屈曲部(9)の外側且つ上方に配置
し、 前記被印刷体(5)の前記板部(6)に前記マスク(2
3)を対向して配置すると、前記屈曲部(9)の外側で
前記固定台(12)から一定距離離間して前記枠体(25)
が前記固定台(12)の上方に配置されることを特徴とす
るスクリーン印刷用印刷版。
1. A fixing table (12), a frame (25), and a mask (23) fixed to the frame (25) and having an opening (24) formed therein. The plate portion (6) of the printing medium (5) having a bent portion (9) that bends and extends upward from the plate portion (6) is arranged on the fixing base (12), and Screen printing for performing screen printing by arranging the mask (23) so as to face the surface to be printed formed on the upper surface of the plate portion (6) or the upper surface of the member provided on the plate portion (6) In the plate, an outer edge portion of the mask (23) is bent upward along the bent portion (9) inside the bent portion (9) of the printing target body (5) to form a bent portion (22). , The inside surface (25) of the frame body (25) on the outside of the bent portion (22).
b) is fixed, and the outer side surface (25c) of the frame (25) extending beyond the bent portion (9) is arranged outside and above the bent portion (9), and The mask (2) is attached to the plate portion (6) of 5).
When 3) are arranged so as to face each other, the frame body (25) is separated from the fixed base (12) by a certain distance outside the bent portion (9).
Is arranged above the fixed base (12), a printing plate for screen printing.
JP18603087U 1987-12-08 1987-12-08 Printing plate for screen printing Expired - Lifetime JPH0742756Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18603087U JPH0742756Y2 (en) 1987-12-08 1987-12-08 Printing plate for screen printing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18603087U JPH0742756Y2 (en) 1987-12-08 1987-12-08 Printing plate for screen printing

Publications (2)

Publication Number Publication Date
JPH0191570U JPH0191570U (en) 1989-06-15
JPH0742756Y2 true JPH0742756Y2 (en) 1995-10-04

Family

ID=31477282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18603087U Expired - Lifetime JPH0742756Y2 (en) 1987-12-08 1987-12-08 Printing plate for screen printing

Country Status (1)

Country Link
JP (1) JPH0742756Y2 (en)

Also Published As

Publication number Publication date
JPH0191570U (en) 1989-06-15

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