JPS5917295A - Printed circuit board - Google Patents

Printed circuit board

Info

Publication number
JPS5917295A
JPS5917295A JP57127304A JP12730482A JPS5917295A JP S5917295 A JPS5917295 A JP S5917295A JP 57127304 A JP57127304 A JP 57127304A JP 12730482 A JP12730482 A JP 12730482A JP S5917295 A JPS5917295 A JP S5917295A
Authority
JP
Japan
Prior art keywords
resistor
terminals
printed
circuit board
printed circuit
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
JP57127304A
Other languages
Japanese (ja)
Inventor
多田 伸
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP57127304A priority Critical patent/JPS5917295A/en
Publication of JPS5917295A publication Critical patent/JPS5917295A/en
Pending legal-status Critical Current

Links

Landscapes

  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Non-Adjustable Resistors (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は基板上の両端子間にカーボンペースト等の部材
を印刷塗布して抵抗体を構成し、且つこれらの上に補強
用オーバーコート材を塗布してなる印刷配線基板の改良
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention provides a printed wiring in which a resistor is constructed by printing and coating a member such as carbon paste between both terminals on a substrate, and a reinforcing overcoat material is coated on top of the resistor. This relates to improvements to substrates.

上記のようにカーボンペースト等の部材を印刷塗布する
ことにより基板上に抵抗体を形成する方法が最近注目さ
れている。
As mentioned above, a method of forming a resistor on a substrate by printing and applying a material such as carbon paste has recently been attracting attention.

第1図はその印刷抵抗体を設けた従来のこの種印刷配線
基板を示し、基板1上にパターン形成された一対の端子
2.2′間にカーボンペースト等を印刷手法にて塗布し
て抵抗体3を形成し、更に該抵抗体3及び端子2.2′
の表面にオーバーコートレジスト4を印刷して、該抵抗
体3の保護と補強を行なっている。
Fig. 1 shows a conventional printed wiring board of this kind provided with the printed resistor, in which carbon paste or the like is applied by printing method between a pair of terminals 2 and 2' patterned on the board 1. a resistor 3 and a terminal 2.2';
An overcoat resist 4 is printed on the surface of the resistor 3 to protect and reinforce the resistor 3.

しかしながら、一旦オーバーコートレジストを印刷する
と、それを剥がすことは困難であるため、上記従来のよ
うに端子2.2′の表面全体までオーバーコートレジス
ト4を印刷してしまうと、抵抗体3に不良が発生しても
簡単に修復することが出来ないという欠点があった。
However, once the overcoat resist is printed, it is difficult to peel it off, so if the overcoat resist 4 is printed to the entire surface of the terminal 2, 2' as in the above conventional method, the resistor 3 will be damaged. The disadvantage is that even if a problem occurs, it cannot be easily repaired.

本発明はかかる従来の欠点に鑑み、抵抗体に不良が発生
しても、その抵抗体の端子を利用して再度カーボンペー
ストによる印刷抵抗を設けるか、もしくはチップ抵抗を
設けて簡単に修復することができるようにした印刷配線
基板の提供を目的とする。
In view of such conventional drawbacks, the present invention provides that even if a defect occurs in a resistor, it can be easily repaired by using the terminals of the resistor to reinstall a printed resistor with carbon paste, or by installing a chip resistor. The purpose of the present invention is to provide a printed wiring board that enables the following.

以下図にもとづいて本発明の詳細な説明する。The present invention will be explained in detail below based on the drawings.

第2図は本発明に係る印刷配線基板を示す図であり、端
子2.2′間にカーボンペースト(エボキシ、フェノー
ル系樹脂にカーボン粉を混入させたもの)を印刷塗布し
て抵抗体3を形成し、この」二にオーバーコートレジス
ト4(エポキシ系樹脂)を印刷塗布する手順は同じであ
るが、特にこの基板では端子2.2′を図示の如く矩形
状に大きくパターン形成し、このパターン形成した端子
2.2′の一部、すなわち抵抗体3から離れている方の
一部をそれぞれ残して該抵抗体3とその接続部分の端子
2.2′の一部分をオーバーコートレジスト4にて被覆
したところに特徴がある。
FIG. 2 is a diagram showing a printed wiring board according to the present invention, in which carbon paste (carbon powder mixed with epoxy or phenolic resin) is printed and coated between terminals 2 and 2' to form a resistor 3. The procedure for printing and applying overcoat resist 4 (epoxy resin) on this board is the same, but especially for this board, terminals 2 and 2' are formed in a large rectangular pattern as shown in the figure, and this pattern is A part of the formed terminal 2.2', that is, a part of the terminal 2.2' at the connection part between the resistor 3 and the resistor 3, is coated with an overcoat resist 4, leaving a part of the terminal 2.2' apart from the resistor 3. It is characterized by the covered area.

このように、端子2.2′の一部を残してオーバーコー
トレジスト4全印刷塗布すると、かりに抵抗体3に不良
が発生してもその抵抗体の両端子2.2 ’ (7) 
一部ハオーバーコートレジスト4にて被覆されていない
から、第3図の如く再度該オーバーコートレジスト4の
上にカーボンペーストを塗布して露出している上記両端
子2.2′の間に新らたな抵抗体3′を形成し、さらに
その上にオーバーコートレジスト41を塗布して簡単に
修復することができる。
In this way, if the overcoat resist 4 is printed and coated on the entire overcoat resist 4 while leaving a part of the terminal 2.2', even if a defect occurs in the resistor 3, both terminals 2.2' (7) of the resistor
Since some parts of the terminals 2 and 2' are not covered with the overcoat resist 4, carbon paste is applied again on the overcoat resist 4 as shown in FIG. This can be easily repaired by forming a new resistor 3' and then applying an overcoat resist 41 thereon.

なお、上記実施例では修復に再度カーボンペーストを塗
布して新らたな抵抗体を形成したが、かわりにチップ抵
抗を接続するようにしてもよい。
In the above embodiment, a new resistor was formed by applying carbon paste again for repair, but a chip resistor may be connected instead.

以上のように、本発明の印刷配線基板は両端子2.2′
の一部をそれぞれ露出させているから、その部分を利用
して簡単に抵抗体の修復を行うことができる。
As described above, the printed wiring board of the present invention has both terminals 2.2'
Since a part of each is exposed, the resistor can be easily repaired using that part.

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

第1図は従来の基板を示す図、第2図は本発明に係る印
刷配線基板を示す図、第3図は同基板における修復の例
を示す図である。
FIG. 1 is a diagram showing a conventional board, FIG. 2 is a diagram showing a printed wiring board according to the present invention, and FIG. 3 is a diagram showing an example of repair on the same board.

Claims (1)

【特許請求の範囲】[Claims] 1、基板上の両端子間にカーボンペースト等の部材を印
刷塗布して抵抗体を構成し且つこれらの上にオーバーコ
ート材を塗布してなるものにおいて、上記オーバーコー
ト材を上記両端子の一部をそれぞれ残して塗布するよう
にして成ることを特徴とする印刷配線基板。
1. In a resistor formed by printing and applying a material such as carbon paste between both terminals on a board, and applying an overcoat material thereon, the overcoat material is applied between both terminals. 1. A printed wiring board characterized in that the printed wiring board is coated by leaving each part intact.
JP57127304A 1982-07-20 1982-07-20 Printed circuit board Pending JPS5917295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57127304A JPS5917295A (en) 1982-07-20 1982-07-20 Printed circuit board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57127304A JPS5917295A (en) 1982-07-20 1982-07-20 Printed circuit board

Publications (1)

Publication Number Publication Date
JPS5917295A true JPS5917295A (en) 1984-01-28

Family

ID=14956634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57127304A Pending JPS5917295A (en) 1982-07-20 1982-07-20 Printed circuit board

Country Status (1)

Country Link
JP (1) JPS5917295A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03181101A (en) * 1989-12-11 1991-08-07 Alps Electric Co Ltd Chip resistor and manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03181101A (en) * 1989-12-11 1991-08-07 Alps Electric Co Ltd Chip resistor and manufacture thereof

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