JPS6092603A - Method of forming ladder resistor - Google Patents
Method of forming ladder resistorInfo
- Publication number
- JPS6092603A JPS6092603A JP58201271A JP20127183A JPS6092603A JP S6092603 A JPS6092603 A JP S6092603A JP 58201271 A JP58201271 A JP 58201271A JP 20127183 A JP20127183 A JP 20127183A JP S6092603 A JPS6092603 A JP S6092603A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- printed resistor
- printed
- ladder
- ladder resistor
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 6
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 13
- 229920001721 polyimide Polymers 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 8
- 238000007650 screen-printing Methods 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 239000009719 polyimide resin Substances 0.000 description 11
- 239000003822 epoxy resin Substances 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 238000010304 firing Methods 0.000 description 3
- 230000003685 thermal hair damage Effects 0.000 description 3
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920003192 poly(bis maleimide) Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003505 heat denaturation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Landscapes
- Apparatuses And Processes For Manufacturing Resistors (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】 （イ）産業上の利用分野 本発明はラダー抵抗体の形成方法の改良に関する。[Detailed description of the invention] (b) Industrial application fields The present invention relates to an improvement in a method for forming a ladder resistor.
（ロ）従来技術
ＤＡ変換器としてラダー抵抗体を用いる。ラダー抵抗体
は第１図に示す如く、抵抗Ｒ，とＲ７をはしご状に接続
し、Ｒ，＝ ２ Ｒ，なる関係を持たせている。(b) Conventional technology A ladder resistor is used as a DA converter. As shown in FIG. 1, the ladder resistor has resistors R and R7 connected in the form of a ladder, with the relationship R,=2R.
Ｊ９ｉ ルラダー抵抗体の各抵抗ｉｔ、 、１１２はエ
ポキシ樹脂ベースのカーボン印刷抵抗ペーストを長方形
状に印刷抵抗体（１）をスクリーン印刷し焼成し、その
後印刷抵抗体（１）をレーザー光により第２図に示す様
にサーペンタインカットして所望の抵抗値に副整して形
成していた。具体的には印刷抵抗体（１）はノー抵抗Ｒ
８を５０Ω／口に形成し、サーペンタインカットにより
曲折した形状として抵抗値を５にΩ〜ＩＯＫΩ程度まで
上げていた。Each resistor it, , 112 of the J9i ladder resistor is made by screen-printing a printed resistor (1) in a rectangular shape using an epoxy resin-based carbon printed resistor paste, and then baking the printed resistor (1). As shown in the figure, it was formed by making a serpentine cut and sub-regulating it to the desired resistance value. Specifically, the printed resistor (1) has no resistance R.
8 was formed to 50Ω/portion, and the resistance value was raised to about 5Ω to IOKΩ by using a bent shape by serpentine cutting.
斯上したエポキシ樹脂ベースのカーボン印刷抵抗ペース
トはエポキシ樹脂ｌＯＯ、カーボン８、無機フィラー３
０、有機溶剤１００で組成されている。エポキシ樹脂は
フレキシブルで密着性が良いのでスクリーン印刷には通
している反面、耐熱性が悪い欠点があった。このために
エポキシ樹脂ベースのカーボン印刷抵抗ペーストによる
ＥＩＪ刷抵抗体（１）ではサーペンタインカットを行う
とレーリ′−光による発熱により印刷抵抗体（１１が大
きく熱損傷を受けるのである。具体的にはサーペンタイ
ンカットのレーザー光によるカット溝のＩＩ］は最低１
５０μｍ、ラダー抵抗体の巾は最低２００μｍで設計す
る必要があり、レーザー光の出力も印刷抵抗体（１）の
熱損傷を最少限にするために弱めて作業するので処理時
間も長くなる欠点があった。The above-mentioned epoxy resin-based carbon printed resistor paste consists of epoxy resin lOO, carbon 8, and inorganic filler 3.
0, organic solvent 100%. Epoxy resin is flexible and has good adhesion, so it can be used in screen printing, but it has the disadvantage of poor heat resistance. For this reason, when serpentine cutting is performed on the EIJ printed resistor (1) made of epoxy resin-based carbon printed resistor paste, the printed resistor (11) suffers significant thermal damage due to the heat generated by the Rayleigh'-light. II] of the groove cut by the laser beam of the serpentine cut is at least 1
The width of the ladder resistor must be designed to be at least 200 μm, and the laser beam output must be weakened to minimize thermal damage to the printed resistor (1), which has the disadvantage of lengthening the processing time. there were.
（ハ）発明の目的
本発明は斯上した欠点に鑑みてなされ、従来の欠点を大
巾に改善したラダー抵抗体の形成方法を実現することを
目的とする。(c) Purpose of the Invention The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to realize a method for forming a ladder resistor that greatly improves the conventional drawbacks.
に）発明の構成
本発明に依れば第３図に示す如く、絶縁基板Ｑｌ）上に
エポキシ変性したポリイミド樹脂ベースのカーボン印刷
抵抗ペーストをスクリーン印刷して焼成して印刷抵抗体
Ｑ３１を形成した後、印刷抵抗体（１３をレーザー光に
よりサーペンタインカットする様に構成される。B) Structure of the Invention According to the present invention, as shown in FIG. 3, a printed resistor Q31 is formed by screen printing an epoxy-modified polyimide resin-based carbon printed resistor paste on an insulating substrate Ql) and baking it. After that, the printed resistor (13) is configured to be serpentine cut with a laser beam.
（均 実施例
本発明の＠ｌの工程は絶縁基板（Ｉｌｌ上に印刷抵抗体
０を形成することにある。(Example 1) The process of the present invention consists in forming a printed resistor 0 on an insulating substrate (Ill).
絶縁基板０υとしてはアルミニウム基板表面をアルマイ
ト処理したものあるいはアルミニウム基板表面にＡ／２
０ｓを混入した絶縁樹脂を塗布したものを用い、良好な
放熱特性を得ている。斯る基板ａυ上には離間して導電
路ａのを設け、この導電路０２間に印刷抵抗体Ｑ３１を
形成しているう
印刷抵抗体（１３）＋−ｔエポキシ変性したポリイミド
樹脂ペースのカーボン印刷抵抗ペーストを用いて形成さ
れる。このカーボン印刷抵抗ペーストハ、エポキシ変性
したポリイミド樹脂１００、カーボン８、無機フィラー
３０、有機溶剤１１００重量比で組成されている。エポ
キシ変性したポリイミド樹脂はビスマレイミド型ポリイ
ミド樹脂に分子銀３００〜３０００のエポキシ樹脂を１
０〜８０部添加して加熱変性して共重合して形成する。The insulating substrate 0υ is an aluminum substrate surface treated with alumite or an aluminum substrate surface with A/2
By using an insulating resin coated with 0s, good heat dissipation characteristics have been obtained. Conductive paths a are provided spaced apart on such a substrate aυ, and a printed resistor Q31 is formed between the conductive paths 02. A printed resistor (13)+-t is made of epoxy-modified polyimide resin paste carbon. Formed using printed resistor paste. This carbon printed resistor paste was composed of 100 parts of epoxy-modified polyimide resin, 8 parts of carbon, 30 parts of inorganic filler, and 1100 parts of organic solvent. Epoxy-modified polyimide resin is a bismaleimide type polyimide resin mixed with 1 epoxy resin having a molecular silver of 300 to 3000.
It is formed by adding 0 to 80 parts, heat denaturation, and copolymerization.
斯上しタカ−ホン印刷抵抗ペーストはエポキシ変性によ
りビスマレイミド型ポリイミド樹脂のもろさと低接着性
の欠点をフレキシブルで且つ高接着性というスクリーン
印刷に適した性質に変え、更にポリイミド樹脂の本案よ
り持つ耐熱性を兼備している。The Takahon printing resistance paste uses epoxy modification to change the flaws of bismaleimide polyimide resin's brittleness and low adhesion into properties suitable for screen printing such as flexibility and high adhesion, and it also has better properties than the original polyimide resin. It also has heat resistance.
このエポキシ変性したポリイミド樹脂ベースのカーボン
印刷抵抗ペーストはスクリーン印刷後焼成される。焼成
は２００℃で１時間ででき、従来のエポキシ樹脂ペース
のカーボン印刷抵抗ペーストの焼成条件が２００℃６時
間であるのに比べると大巾に焼成時間を短縮できる。This epoxy-modified polyimide resin-based carbon printed resistor paste is fired after screen printing. Firing can be done in one hour at 200°C, which greatly shortens the firing time compared to the conventional firing conditions of epoxy resin-based carbon printed resistance paste, which is 6 hours at 200°C.
ラダー抵抗体Ｒ，，、Ｒ，となる印刷抵抗体ａりの形状
は長方形状に形成され、層抵抗Ｒ，が５０Ω／口程度に
形成されている。The shape of the printed resistor a, which becomes the ladder resistor R, , R, is formed into a rectangular shape, and the layer resistance R is formed to be about 50Ω/hole.
本発明の第２の工程は印刷抵抗体（Ｉ（ｌをレーザー光
によりサーペンタインカットすることにある。The second step of the present invention consists in serpentine cutting the printed resistor (I) using a laser beam.
本工程では本発明に依る印刷抵抗体ａ３がポリイミド樹
脂ベースで耐熱性に富む利点を大いに利用しているので
ある。印刷抵抗体Ｑ３１は第３図に示す如く、側面より
交互に直線的に延在される櫛歯状のカット溝（１４）に
よりサーペンタインカットし、蛇行するラダー抵抗体を
形成する。サーペンタインカットはレーザートリミング
装置により行い、レーザー光はＹＡＧレーザ−（波長１
．０６μｒｒＬ）を用い、出力２００ ｍＷ＠ｌ襄であ
る。また本発明では印刷抵抗体０３）は耐熱性のあるエ
ポキシ変性したポリイミド樹脂ベースのカーボン印刷抵
抗ペーストで形成されているので、レーザー光による熱
損傷は少ない特徴を有している。具体的にはカット溝Ｉ
の巾は最少６０μｍであり、ラダー抵抗体の巾は最少１
２５μｍに設定可能である。この結果本発明では極めて
狭い間隔のサーペンタインカットが行なえ、従来のもの
に比較して約半分の印刷抵抗体０Ｊの面積で５にΩ〜Ｉ
ＯＫΩのラダー抵抗体を得られる。In this step, the advantage that the printed resistor a3 according to the present invention is based on polyimide resin and has high heat resistance is fully utilized. As shown in FIG. 3, the printed resistor Q31 is serpentine cut by comb-shaped cut grooves (14) extending linearly alternately from the side surfaces to form a meandering ladder resistor. The serpentine cut is performed using a laser trimming device, and the laser beam is a YAG laser (wavelength 1
．． 06 μrrL), and the output is 200 mW@1. Furthermore, in the present invention, the printed resistor 03) is formed of a carbon printed resistor paste based on a heat-resistant epoxy-modified polyimide resin, so that it is characterized by less thermal damage caused by laser light. Specifically, cut groove I
The width of the ladder resistor is at least 60 μm, and the width of the ladder resistor is at least 1
It can be set to 25 μm. As a result, in the present invention, serpentine cuts can be made at extremely narrow intervals, and the area of the printed resistor 0J is about half that of the conventional one, and the resistance is 5Ω to I.
A ladder resistor of OKΩ can be obtained.
（へ）発明の効果
本発明に依れば耐熱性の強いｐボキシ変性したポリイミ
ド樹脂ベースのカーボン印刷抵抗ペーストを用いること
により、レーザー光により熱損傷の少いサーペンタイン
カットが実現でき高精度のラダー抵抗体を得られる。ま
たサーペンタインカットのカット溝の間隔を従来の半分
に縮少できるので、同一抵抗値を得る場合約半分の面積
の印刷抵抗体で足りラダー抵抗体の小型化を図れる。更
に本発明の印刷抵抗体は耐熱性が強いのでレーザー光の
出力を上げて短時間にサーペンタインカットを行なえる
。(F) Effects of the Invention According to the present invention, by using a carbon printed resistance paste based on a p-boxy-modified polyimide resin with strong heat resistance, a serpentine cut with little heat damage by laser light can be realized, and a high-precision ladder can be realized. You can get a resistor. Furthermore, since the interval between the serpentine cut grooves can be reduced to half that of the conventional one, a printed resistor with about half the area is sufficient to obtain the same resistance value, and the ladder resistor can be made smaller. Furthermore, since the printed resistor of the present invention has strong heat resistance, it is possible to perform serpentine cutting in a short time by increasing the output of laser light.
第１図はラダー抵抗体を説明する回路図、第２図は従来
のラダー抵抗体の形成方法を説明する上面図、第３図は
本発明のラダー抵抗体の形成方法を説明する上面図であ
る。
０υは絶縁基板、 Ｑ２＋は導電路、 （１３１は印刷
抵抗体、 ０力はカット溝である。
第１図
第２間
ｆ４″Ｓ３図 １゜FIG. 1 is a circuit diagram illustrating a ladder resistor, FIG. 2 is a top view illustrating a conventional method for forming a ladder resistor, and FIG. 3 is a top view illustrating a method for forming a ladder resistor according to the present invention. be. 0υ is an insulating substrate, Q2+ is a conductive path, (131 is a printed resistor, and 0 force is a cut groove.
Claims (1)
脂ヘースのカーボン印刷抵抗ペーストをスクリーン印
刷し焼成して印刷抵抗体を形成した後、該印刷抵抗体を
レーザー光によりサーペンタインカットすることを特徴
とするラダー抵抗体の形成方法。(1) Epoxy-modified polyimide 4tJ on an insulating substrate
1. A method for forming a ladder resistor, which comprises screen-printing and baking a carbon-printed resistor paste made of fat to form a printed resistor, and then cutting the printed resistor into a serpentine cut using a laser beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58201271A JPS6092603A (en) | 1983-10-26 | 1983-10-26 | Method of forming ladder resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58201271A JPS6092603A (en) | 1983-10-26 | 1983-10-26 | Method of forming ladder resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6092603A true JPS6092603A (en) | 1985-05-24 |
| JPH0550123B2 JPH0550123B2 (en) | 1993-07-28 |
Family
ID=16438185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58201271A Granted JPS6092603A (en) | 1983-10-26 | 1983-10-26 | Method of forming ladder resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6092603A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141705A (en) * | 1979-04-20 | 1980-11-05 | Matsushita Electric Industrial Co Ltd | Film resistor |
| JPS58106889A (en) * | 1981-12-18 | 1983-06-25 | 松下電器産業株式会社 | How to attach electrical components such as resistors to printed wiring boards |
| JPS5955090A (en) * | 1982-09-22 | 1984-03-29 | 松下電器産業株式会社 | Manufacturing method of flexible wiring board with resistor |
| JPS59134803A (en) * | 1983-01-20 | 1984-08-02 | 松下電器産業株式会社 | Manufacturing method of chip resistor |
-
1983
- 1983-10-26 JP JP58201271A patent/JPS6092603A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141705A (en) * | 1979-04-20 | 1980-11-05 | Matsushita Electric Industrial Co Ltd | Film resistor |
| JPS58106889A (en) * | 1981-12-18 | 1983-06-25 | 松下電器産業株式会社 | How to attach electrical components such as resistors to printed wiring boards |
| JPS5955090A (en) * | 1982-09-22 | 1984-03-29 | 松下電器産業株式会社 | Manufacturing method of flexible wiring board with resistor |
| JPS59134803A (en) * | 1983-01-20 | 1984-08-02 | 松下電器産業株式会社 | Manufacturing method of chip resistor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0550123B2 (en) | 1993-07-28 |
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