JPH0232502A - Linearity adjustment of variable resistor - Google Patents
Linearity adjustment of variable resistorInfo
- Publication number
- JPH0232502A JPH0232502A JP63182661A JP18266188A JPH0232502A JP H0232502 A JPH0232502 A JP H0232502A JP 63182661 A JP63182661 A JP 63182661A JP 18266188 A JP18266188 A JP 18266188A JP H0232502 A JPH0232502 A JP H0232502A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- resistor
- electrodes
- variable resistor
- linearity
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011889 copper foil Substances 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 238000007650 screen-printing Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Adjustable Resistors (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は直線性のバラツキの少ない可変抵抗器の製造方
法に関するもので、スロットルセンサーチルトセンサー
、ハイドセンサー等の自動車用ポテンシオメータ−の他
の、高い精度を必要とする可変抵抗器に使用されるもの
である。[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a method for manufacturing a variable resistor with little variation in linearity, and relates to a method for manufacturing a variable resistor with little variation in linearity, and is used for automotive ports such as throttle sensors, tilt sensors, and hide sensors. In addition to tensiometers, this is used in variable resistors that require high precision.
（従来の技術）
本発明に係る可変抵抗器としては二層構造のものがあり
、この二層構造の抵抗体の上層の抵抗体の体積固有抵抗
を下層の体積固有抵抗を２〜５゜０倍とし耐摩性を向上
させるものがある。(Prior art) The variable resistor according to the present invention has a two-layer structure, and the volume resistivity of the upper layer of the resistor of this two-layer structure is 2 to 5°0. There are some that double and improve wear resistance.
しかし二層構造の抵抗体はバラツキが大きく直線性が良
くないために、関連技術として（特願昭６２−３０１１
３５号公報）、直線性を調整するために可変抵抗器の抵
抗体の一部の抵抗値を変化させるものがある。However, since the two-layer structure resistor has large variations and poor linearity, the related technology
No. 35), there is a method in which the resistance value of a part of the resistor of a variable resistor is changed in order to adjust the linearity.
（発明が解決しようとする課題）
しかし前記二層構造よりなる抵抗体の直線性を調整する
時には、必ず摺動子を抵抗体上に摺動させて、出力特性
を測定するものである。(Problems to be Solved by the Invention) However, when adjusting the linearity of the resistor having the two-layer structure, a slider must be slid over the resistor to measure the output characteristics.
このために測定に要する検査治具は高精度のものが必要
であり、測定時間もかかりデータの読み取り、保存にも
工数がかかるという問題点があった。For this reason, the inspection jig required for measurement needs to be of high precision, and there are problems in that it takes a long time to measure and it takes a lot of man-hours to read and save the data.
本発明は二層構造の抵抗体の直線性の調整に於て、調整
作業が簡単に出来る調整方法を技術的課題とするもので
ある。The technical object of the present invention is to provide an adjustment method that facilitates the adjustment work in adjusting the linearity of a two-layer resistor.
（課題を解決するための手段）
前記技４＋ｊ的課題を解決するために講じた技術的手段
は、次のようである。すなわち、
基板の少なくとも一平面上に、第１の抵抗体層を設け、
該抵抗体上にその体積固有抵抗の２倍から５００倍の体
積固有抵抗を有する第２の抵抗層を設けた可変抵抗器に
於て、豫め可変抵抗器の出力範囲のなかで、特定の部位
に中間電極を導体あるいは、低抵抗の抵抗体で形成し、
中間電極と両端電極間の抵抗値を測定し、事前に計算し
た理論的な抵抗比になるように、必要な部位の抵抗体の
抵抗値を変化させることによって、可変抵抗器の出力特
性を目標に近づける方法で、前記中間電極を第２抵抗体
層で被覆するものである。(Means for solving the problem) The technical means taken to solve the problem of technique 4+j are as follows. That is, a first resistor layer is provided on at least one plane of the substrate,
In a variable resistor in which a second resistance layer having a volume resistivity of 2 to 500 times the volume resistivity of the resistor is provided on the resistor, a specific An intermediate electrode is formed at the site using a conductor or a low resistance resistor,
Target the output characteristics of the variable resistor by measuring the resistance value between the intermediate electrode and both end electrodes, and changing the resistance value of the resistor in the necessary parts to achieve the theoretical resistance ratio calculated in advance. The intermediate electrode is coated with the second resistor layer using a method that approaches the resistor layer.
（作用）
前記技術的手段は次のように作用する。すなわち、
二層構造の可変抵抗器に於て、印刷位置ずれ、印刷した
膜厚の不均一等の原因により直線性（出力特性）にバラ
ツキが生じる。このバラツキを小さくするために可変抵
抗器の作動範囲として両端部を使用せず、中央部が７０
％使用されるように使用、範囲が限定されるので、この
範囲に於て特性測定用の電極を付加し、部分的に抵抗体
の抵抗値を調整し、直線性のバラツキの小さい可変抵抗
器とするものである。(Operation) The technical means operates as follows. That is, in a variable resistor with a two-layer structure, variations in linearity (output characteristics) occur due to causes such as misalignment of printing and non-uniformity of printed film thickness. In order to reduce this variation, the operating range of the variable resistor is not at both ends, but at the center.
%, the range of use is limited, so we add electrodes for measuring characteristics in this range, partially adjust the resistance value of the resistor, and create a variable resistor with small linearity variations. That is.
（実施例）
以下第１図〜第１０図に基づいて実施例について説明す
る。(Example) Examples will be described below based on FIGS. 1 to 10.
実施例１
本実施例は第１図に示すような抵抗体層を備えた基板１
と振動子１１よりなる可変抵抗器の抵抗体層を備えた基
板の直線性の調整方法である。Example 1 This example uses a substrate 1 provided with a resistor layer as shown in FIG.
This is a method for adjusting the linearity of a substrate provided with a resistor layer of a variable resistor consisting of a vibrator 11 and a vibrator 11.
抵抗体層を備えた基板の製造工程に於て、（１）第２図
に示すような銅′ｄ５２が必要形状にエツチングされた
ガラスエボキン基板、祇フェノール基板のような基板１
を用意する。In the manufacturing process of a board equipped with a resistor layer, (1) a board 1 such as a glass Evokin board or a Giophenol board on which copper 'd52 is etched into the required shape as shown in Fig. 2;
Prepare.
（２）第３図に示すように、基板１上に、可変抵抗器の
抵抗の両端部及び集電部に銀ペースト（アサヒ化学性Ｌ
Ｓ−５０４Ｊ）をスクリーン印刷し熱硬化して第３図に
示すＡｇ電極３を形成する。(2) As shown in Figure 3, on the substrate 1, apply silver paste (Asahi Kagaku L.
S-504J) was screen printed and thermally cured to form the Ag electrode 3 shown in FIG.
この時、同時に可変抵抗器の使用範囲の両端に中間電極
４を形成する。At this time, intermediate electrodes 4 are simultaneously formed at both ends of the range of use of the variable resistor.
（３）次に第４図に示すように下層抵抗体５にシート抵
抗３５０Ω／口のカーボンペースト（アサヒ化学性ＢＴ
Ｕ−３５０−５）をスクリーン印刷し、熱硬化する。(3) Next, as shown in Fig. 4, carbon paste (Asahi Kagaku BT
U-350-5) is screen printed and heat cured.
この時、同時に集電部にも同じカーボンペーストを印刷
、熱硬化して集電部抵抗体６を形成する。At this time, the same carbon paste is simultaneously printed on the current collector and cured with heat to form the current collector resistor 6.
（４）次に、ＧＮＤ電極１２と第１中間電極１３の間の
抵抗Ｒ１、第１中間電極１３と第２中間電極１４の間の
抵抗Ｒ１、第２中間電極１４とＶｃＣ電極１５の間の抵
抗Ｒ３を測定する。(4) Next, the resistance R1 between the GND electrode 12 and the first intermediate electrode 13, the resistance R1 between the first intermediate electrode 13 and the second intermediate electrode 14, and the resistance R1 between the second intermediate electrode 14 and the VcC electrode 15 are Measure resistance R3.
本来第７図に示すように下層抵抗体５の膜厚が均一で材
料的にも均一なものであれば、基板１と摺動子１１を組
付けた可変抵抗器のブラシ角度−出力特性は、設計出力
特性のようにＡ、Ｂを結ぶ直線でなければならない。Originally, as shown in FIG. 7, if the film thickness of the lower resistor 5 is uniform and the material is also uniform, the brush angle-output characteristic of the variable resistor assembled with the substrate 1 and the slider 11 is as follows. , it must be a straight line connecting A and B as in the design output characteristics.
しかし、実際の製品は第７図の太線に示すように一直線
はならず又、Ａ点、Ｂ点も通過しない。However, the actual product does not form a straight line as shown by the thick line in FIG. 7, and does not pass through points A and B.
この時、Ｒ＋ ： Ｒｙ＝ ： Ｒｘの比は第７図
に示すｖＡ ：Ｖｃ ：Ｖ、、の比と等しいはずであ
る。又設計出力は特性にするためには、Ｒ＋、Ｒｓを調
整してＲ”２、Ｒ１，とし、Ｒ’＋ ： Ｒｚ ：
Ｒ’ｉの比が第７図に示すＶＡ ： Ｖｃ ： Ｖ＊
とすればＡ点とａ点、Ｂ点とｂ点が第８図に示すように
一致し、調整後の出力特性は第８図の太線のように設計
出力特性に非常に近くなる。At this time, the ratio of R+:Ry=:Rx should be equal to the ratio of vA:Vc:V shown in FIG. Also, in order to make the design output a characteristic, adjust R+ and Rs to R''2, R1, and R'+: Rz:
The ratio of R'i is VA:Vc:V* as shown in FIG.
If so, point A and point a, and point B and point b coincide as shown in FIG. 8, and the output characteristic after adjustment becomes very close to the designed output characteristic as shown by the thick line in FIG.
この時、中間電極の外側の抵抗部すなわちＲ１及びＲ１
の抵抗値を調整する方法としては、従来厚膜抵抗素子の
抵抗調整方法として既知のレーザートリミング法、サン
ドブラスト法などの抵抗体の一部を蒸発あるいは、削り
取って抵抗値を大きくする方法や、Ｒ＋、Ｒｓ部にカー
ボンペーストを重ね印刷、あるいは転写して抵抗値を小
さくする方法、Ｒ，、Ｒ２部に赤外線を照射し、局部的
に加熱して抵抗値を小さくするものであり、これを第５
図に示し７は抵抗値調整部である。At this time, the outer resistance parts of the intermediate electrode, that is, R1 and R1
Methods for adjusting the resistance of thick-film resistors include laser trimming, sandblasting, and other known methods for adjusting the resistance of thick-film resistors, such as evaporating or scraping off a part of the resistor to increase the resistance. , a method of overprinting or transferring carbon paste on the Rs part to reduce the resistance value, a method of irradiating the R,, R2 part with infrared rays and heating it locally to reduce the resistance value. 5
The reference numeral 7 shown in the figure is a resistance value adjustment section.
ＲＩ 、Ｒｚ 、Ｒ３を測定する時やＲ，、Ｒ３をねら
いの抵抗値にする時は、下層抵抗体５から僅かにはみ出
した中間電極４に抵抗計のプローブを当てる。When measuring RI, Rz, and R3, or when setting R, and R3 to desired resistance values, the probe of the resistance meter is applied to the intermediate electrode 4 that slightly protrudes from the lower resistor 5.
（５）次に第６図に示すように上層抵抗体８、リード部
保護抵抗体９として下層抵抗体５より体積固有抵抗の高
い、シート抵抗２にΩ／口のカーボンペースト（アサヒ
化学製ＢＴＵ−２に−５）をスクリーン印刷し、熱硬化
する。(5) As shown in FIG. Screen print -5) on -2 and heat cure.
この時上層抵抗体８の膜厚の不均一によって直線性の狂
いを生じるが、上層抵抗体の体積固有抵抗は下層抵抗体
５のそれより大きいので直線性の狂いへの影響度は小さ
い。At this time, the unevenness of the film thickness of the upper layer resistor 8 causes a deviation in linearity, but since the volume resistivity of the upper layer resistor is larger than that of the lower layer resistor 5, the degree of influence on the deviation in linearity is small.
実施例２
銅箔２のパターン形状、及びＡｇ電極３の形状を設計す
る時、始めからＡｇ電極の間隔を僅かに狭くしておく。Example 2 When designing the pattern shape of the copper foil 2 and the shape of the Ag electrode 3, the spacing between the Ag electrodes is made slightly narrower from the beginning.
すると調整前の出力特性は第９図に示す破線を中心にし
てバラツクことになり、ａ点はＡ点より低く、ｂ点はＢ
点より高くなる。Then, the output characteristics before adjustment will vary around the broken line shown in Figure 9, with point a being lower than point A and point b being lower than B.
higher than the point.
この場合実施例１と同様にＲＩ 、ＲＩ−Ｒ３を測定し
、Ｒ’＋： Ｒｚ ： Ｒ’ｘ＝ＶＡ ： Ｖｃ
： ＶｍとなるようＲｏいＲ１，を変化させる時、Ｒ１
＜Ｒ’ｌ、Ｒ３＜Ｒ”３の関係となるのでレーザートリ
ミング法やサンドブラスト法のようなリアルタイムで抵
抗値を測定しながら、抵抗値を調整（大きくする）する
手法が使用できる。In this case, RI and RI-R3 are measured in the same manner as in Example 1, and R'+: Rz: R'x=VA: Vc
: When changing RoR1, so that it becomes Vm, R1
Since the relationships are as follows: <R'l, R3<R''3, a method of adjusting (increasing) the resistance value while measuring the resistance value in real time, such as a laser trimming method or a sandblasting method, can be used.
実施例３
前記中間電極４が銅箔あるいは抵抗値のカーボンペース
トで形成したものである。Embodiment 3 The intermediate electrode 4 is formed of copper foil or carbon paste having a high resistance value.
本発明は次の効果を有する。 The present invention has the following effects.
（１）抵抗測定するだけで、調整すべき抵抗体の必要調
整量が計算できるので、調整作業が簡単で、工数も短縮
できる。(1) The required amount of adjustment of the resistor to be adjusted can be calculated just by measuring the resistance, so the adjustment work is simple and the number of man-hours can be reduced.
（２）中間電極を第２の抵抗体層によって被覆するので
、Ａｇマイグレーションや導体の腐食が発生せず信幀性
が高いものである。(2) Since the intermediate electrode is covered with the second resistor layer, Ag migration and corrosion of the conductor do not occur and reliability is high.
第１図は本実施例の可変抵抗器の平面図、第２図〜第６
図は本実施例の基板製造工程の平面図、第７図〜第１０
図は直線性調整原理を説明する図である。
１・・
３・・
４・・
５・・
６・・
８・・
９・・
・基板。
・Ａｇ電極。
・中間電極。
・下層抵抗体。
・集電部抵抗体。
・上層抵抗体。
・リード部保護抵抗体。Figure 1 is a plan view of the variable resistor of this embodiment, Figures 2 to 6
The figure is a plan view of the substrate manufacturing process of this example, and Figures 7 to 10.
The figure is a diagram explaining the principle of linearity adjustment. 1.. 3.. 4.. 5.. 6.. 8.. 9.. - Board.・Ag electrode.・Intermediate electrode.・Lower layer resistor.・Current collector resistor.・Upper layer resistor.・Lead protection resistor.
Claims (2)
設け、該抵抗体上にその体積固有抵抗の２倍から５００
倍の体積固有抵抗を有する第２の抵抗層を設けた可変抵
抗器に於て、豫め可変抵抗器の出力範囲のなかで、特定
の部位に中間電極を導体あるいは、低抵抗の抵抗体で形
成し、中間電極と両端の電極間の抵抗値を測定し、理論
的な抵抗比になるように、必要な部位の抵抗体の抵抗値
を変化させることによつて可変抵抗器の出力特性を目標
に近づける可変抵抗器の直線性調整方法。(1) A first resistor layer is provided on at least one plane of the substrate, and the resistor layer has a resistor layer with a resistivity of 2 to 500 times the volume resistivity.
In a variable resistor equipped with a second resistance layer having twice the volume resistivity, the intermediate electrode is placed at a specific location within the output range of the variable resistor using a conductor or a low-resistance resistor. The output characteristics of the variable resistor can be determined by measuring the resistance value between the intermediate electrode and the electrodes at both ends, and changing the resistance value of the resistor in the necessary parts to achieve the theoretical resistance ratio. How to adjust the linearity of a variable resistor to get closer to the target.
してなる可変抵抗器の直線性調整方法。(2) A method for adjusting the linearity of a variable resistor comprising covering the intermediate electrode according to claim 1 with a second resistor layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63182661A JPH0232502A (en) | 1988-07-21 | 1988-07-21 | Linearity adjustment of variable resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63182661A JPH0232502A (en) | 1988-07-21 | 1988-07-21 | Linearity adjustment of variable resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0232502A true JPH0232502A (en) | 1990-02-02 |
Family
ID=16122222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63182661A Pending JPH0232502A (en) | 1988-07-21 | 1988-07-21 | Linearity adjustment of variable resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0232502A (en) |
-
1988
- 1988-07-21 JP JP63182661A patent/JPH0232502A/en active Pending
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