JPH0596877A - Screen mask structure for flexible circuit board - Google Patents
Screen mask structure for flexible circuit boardInfo
- Publication number
- JPH0596877A JPH0596877A JP25791391A JP25791391A JPH0596877A JP H0596877 A JPH0596877 A JP H0596877A JP 25791391 A JP25791391 A JP 25791391A JP 25791391 A JP25791391 A JP 25791391A JP H0596877 A JPH0596877 A JP H0596877A
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- flexible circuit
- screen mask
- mask structure
- inner leads
- 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
Links
- 239000011347 resin Substances 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000000839 emulsion Substances 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
(57)【要約】
【目的】樹脂を基材とするフィルム上にパターンを形成
したフレキシブル回路基板の製造において、品質の安定
したフレキシブル回路基板の製造を可能とする。
【構成】フレキシブル回路基板のデバイスホール相当部
に、回路基板の厚さと同じ高さの突起を乳剤により設け
たフレキシブル回路基板用スクリーンマスクの構造。
【効果】このスクリーンマスクを用いて印刷を行なう
と、デバイスホール部に突き出したインナーリードに
は、スクリーンマスクから伝わる圧力は集中せず、イン
ナーリードが下向きに曲がる現象を防止する事ができ、
品質の安定したフレキシブル回路基板を供給する事がで
きる。
(57) [Abstract] [Purpose] It is possible to manufacture a flexible circuit board of stable quality in the manufacture of a flexible circuit board in which a pattern is formed on a resin-based film. [Structure] A structure of a screen mask for a flexible circuit board, in which a projection having the same height as the thickness of the circuit board is provided by emulsion in a portion corresponding to a device hole of the flexible circuit board. [Effect] When printing is performed using this screen mask, the pressure transmitted from the screen mask is not concentrated on the inner leads protruding into the device hole portion, and it is possible to prevent the inner leads from bending downward.
We can supply flexible circuit boards with stable quality.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、樹脂を基材とするフィ
ルム上にパターンを形成したフレキシブル回路基板用ス
クリーンマスク構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen mask structure for a flexible circuit board in which a pattern is formed on a resin-based film.
【０００２】[0002]
【従来の技術】従来のフレキシブル回路基板用スクリー
ンマスクは、図３に示す様に、樹脂繊維または金属ワイ
ヤー１をメッシュ状に平織りしたものに、所望のパター
ン以外の部分に乳剤２を塗布したものであり、乳剤は均
一に塗布された構造であった。このスクリーンマスクを
使って、ソルダーレジストを基板上に印刷し、フレキシ
ブル回路基板を供給していた。2. Description of the Related Art As shown in FIG. 3, a conventional screen mask for a flexible circuit board has a resin fiber or a metal wire 1 plain-woven in a mesh shape and an emulsion 2 applied to a portion other than a desired pattern. And the emulsion had a uniformly coated structure. Using this screen mask, a solder resist was printed on the board to supply a flexible circuit board.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前述の従来構
造では、図４に示す様にデバイスホール部３に突き出し
たインナーリード４に印刷時にスクリーンマスクから伝
わる圧力が集中するためインナーリードが下向きに曲が
り、インナーリードボンディングできない様な品質の不
安定なフレキシブル回路基板を供給せざるを得ないとい
う課題を有する。そこで、本発明はこの様な課題を解決
するもので、その目的とするところは、インナーリード
の下向きに曲がる現象を防止し、品質の安定したフレキ
シブル回路基板を供給するところにある。However, in the above-described conventional structure, as shown in FIG. 4, the pressure transmitted from the screen mask during printing is concentrated on the inner leads 4 protruding into the device hole portion 3, so that the inner leads face downward. There is a problem that it is necessary to supply a flexible circuit board of which quality is unstable and which cannot be bent and inner lead bonded. Therefore, the present invention solves such a problem, and an object of the present invention is to prevent the downward bending phenomenon of the inner leads and to supply a flexible circuit board of stable quality.
【０００４】[0004]
【課題を解決するための手段】本発明のフレキシブル回
路基板用スクリーンマスク構造は、フレキシブル回路基
板のデバイスホール相当部に、突起を設ける事により、
インナーリードにスクリーンマスクから集中する圧力を
和らげ、インナーリードの下向きに曲がる現象を防止
し、品質を安定させた事を特徴とする。According to the screen mask structure for a flexible circuit board of the present invention, a protrusion is provided at a portion corresponding to a device hole of the flexible circuit board.
The feature is that the pressure concentrated from the screen mask on the inner leads is relieved, the downward bending phenomenon of the inner leads is prevented, and the quality is stabilized.
【０００５】[0005]
【実施例】以下に本発明の実施例を図面に基づいて説明
する。図１は本発明のフレキシブル回路基板用スクリー
ンマスク構造の要部を示す断面図。図２は本発明のフレ
キシブル回路基板用スクリーンマスクの実施例の要部を
示す断面図である。図３は従来のフレキシブル回路基板
用スクリーンマスク構造の要部を示す断面図。図４は従
来のフレキシブル回路基板用スクリーンマスクの実施例
の要部を示す断面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an essential part of a screen mask structure for a flexible circuit board according to the present invention. FIG. 2 is a sectional view showing a main part of an embodiment of a screen mask for a flexible circuit board of the present invention. FIG. 3 is a sectional view showing a main part of a conventional screen mask structure for a flexible circuit board. FIG. 4 is a cross-sectional view showing a main part of an example of a conventional screen mask for a flexible circuit board.
【０００６】本発明のフレキシブル回路基板用スクリー
ンマスク構造は、図１に示す様に樹脂繊維または金属ワ
イヤ１をメッシュ状に平織りしたものに、所望のパター
ン以外の部分に乳剤２を塗布したものであるが、乳剤２
の形状は印刷する基板のデバイスホール相当部に、イン
ナーリードと接触しない程度の幅で、回路基板の厚さと
同じ高さの突起を設けたものである。このスクリーンマ
スクを使って、ソルダーレジストをフレキシブル回路基
板上に印刷をすると、図２の様にデバイスホール部３に
突き出したインナーリード４には圧力は集中せず、イン
ナーリードが下向きに曲がる現象を防止する事ができ、
品質の安定したフレキシブル回路基板を供給する事がで
きる。As shown in FIG. 1, the screen mask structure for a flexible circuit board of the present invention comprises a resin fiber or a metal wire 1 plain-woven into a mesh shape, and an emulsion 2 coated on a portion other than a desired pattern. Yes, emulsion 2
The shape is such that a protrusion having a width that does not contact the inner leads and having the same height as the thickness of the circuit board is provided in a portion corresponding to the device hole of the printed board. When a solder resist is printed on a flexible circuit board using this screen mask, the pressure does not concentrate on the inner leads 4 protruding into the device hole 3 as shown in FIG. 2, and the inner leads bend downward. Can be prevented,
We can supply flexible circuit boards with stable quality.
【０００７】[0007]
【発明の効果】以上に述べた様な発明によれば、樹脂を
基材とするフィルム上にパターンを形成したフレキシブ
ル回路基板製造において、印刷時にインナーリードが下
向きに曲がる現象を防止する事ができ、品質の安定した
フレキシブル回路基板を供給する事を可能にするという
効果を有する。According to the invention as described above, it is possible to prevent the phenomenon that the inner lead bends downward during printing in the production of a flexible circuit board in which a pattern is formed on a resin-based film. In addition, the flexible circuit board of stable quality can be supplied.
【図１】本発明のフレキシブル回路基板用スクリーンマ
スク構造の要部を示す断面図である。FIG. 1 is a sectional view showing a main part of a screen mask structure for a flexible circuit board of the present invention.
【図２】本発明のフレキシブル回路基板用スクリーンマ
スクの実施例の要部を示す断面図である。FIG. 2 is a sectional view showing a main part of an embodiment of a screen mask for a flexible circuit board of the present invention.
【図３】従来のフレキシブル回路基板用スクリーンマス
ク構造の要部を示す断面図である。FIG. 3 is a cross-sectional view showing a main part of a conventional screen mask structure for a flexible circuit board.
【図４】従来のフレキシブル回路基板用スクリーンマス
クの実施例の要部を示す断面図である。FIG. 4 is a sectional view showing a main part of an example of a conventional screen mask for a flexible circuit board.
１ 樹脂繊維または金属ワイヤー ２ 乳剤 ３ デバイスホール部 ４ インナーリード ５ ベースフィルム 1 Resin fiber or metal wire 2 Emulsion 3 Device hole part 4 Inner lead 5 Base film
Claims (1)
形成したフレキシブル回路基板製造において、デバイス
ホール相当部に突起を設ける事により、品質の安定した
フレキシブル回路基板の製造を可能にした事を特徴とす
るフレキシブル回路基板用スクリーンマスク構造。1. A flexible circuit board having a pattern formed on a resin-based film, wherein a protrusion is provided at a portion corresponding to a device hole, whereby a flexible circuit board having stable quality can be manufactured. Characteristic screen mask structure for flexible circuit boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25791391A JPH0596877A (en) | 1991-10-04 | 1991-10-04 | Screen mask structure for flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25791391A JPH0596877A (en) | 1991-10-04 | 1991-10-04 | Screen mask structure for flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0596877A true JPH0596877A (en) | 1993-04-20 |
Family
ID=17312935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25791391A Pending JPH0596877A (en) | 1991-10-04 | 1991-10-04 | Screen mask structure for flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0596877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009166391A (en) * | 2008-01-17 | 2009-07-30 | Ngk Insulators Ltd | Screen plate and manufacturing method for screen plate |
-
1991
- 1991-10-04 JP JP25791391A patent/JPH0596877A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009166391A (en) * | 2008-01-17 | 2009-07-30 | Ngk Insulators Ltd | Screen plate and manufacturing method for screen plate |
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