EP0436776A2 - Combination of film resistors with structured contact surfaces and connection wires - Google Patents
Combination of film resistors with structured contact surfaces and connection wires Download PDFInfo
- Publication number
- EP0436776A2 EP0436776A2 EP90115767A EP90115767A EP0436776A2 EP 0436776 A2 EP0436776 A2 EP 0436776A2 EP 90115767 A EP90115767 A EP 90115767A EP 90115767 A EP90115767 A EP 90115767A EP 0436776 A2 EP0436776 A2 EP 0436776A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact surfaces
- constriction
- contact areas
- contact
- film resistors
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
- H01C1/142—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being coated on the resistive element
Definitions
- the invention relates to electrical sheet resistors, consisting of an electrical resistance structure, two connecting tracks and two contact surfaces for the connecting wires, the contact surfaces being divided into two smaller contact surfaces by insulating strips.
- the measurement provides the electrical resistance between the two voltage test probes.
- the contact surfaces of the sheet resistors have a size that are designed for welding or other fastenings for each connecting wire. These areas are oversized for the space required by test probes. On the other hand, the additional space for a four-point measurement with two additional contact surfaces of the size required for the test probes is not available. A subdivision of the existing two contact areas into four smaller areas results in contact areas which are individually too small for contacting with connecting wires.
- two connecting tracks and two contact surfaces for the connecting wires whereby the contact areas are divided into two smaller contact areas by insulating strips, which can be accessed by means of a four-point resistance measurement and which can be contacted with connecting wires without impairing the measuring accuracy.
- the insulating strips each form a constriction between the two small contact surfaces belonging to a connecting path and these are electrically connected to one another and to the connecting path exclusively via this constriction, and that the insulating strips are arranged in their direction in this way that when contacting the connecting wires, both small contact surfaces are electrically conductively connected to the connecting wire.
- the insulating strip bridged by the connecting wire is preferably arranged perpendicular to the wire axis.
- constriction is located directly at the end of the insulating strip and as close as possible to the connection point created by the connecting wire between the respective two small contact surfaces.
- This division of the two contact surfaces into two smaller contact surfaces according to the invention has no influence on the required accuracy when attaching the connecting wires. If the connecting wire to be fastened protrudes beyond the boundaries of the smaller contact areas, this has no detrimental effect on the adjustment value because the electrical connection is provided in both areas. It is also advantageous that a different displacement of the connecting wires transverse to the insulating strip does not affect the electrical resistance. when the electrical contact to the two contact surfaces is close to the insulating strip.
- the structuring of the contact surfaces according to the invention can be used for electrical sheet resistors made of all known materials (e.g. metals such as platinum, nickel; semiconductors such as silicon; conductive plastics), produced using thin or thick film technology or from foils. Suitable methods for producing the insulating strips are laser structuring, dry or wet etching.
- Known contacting methods for the connecting wires are thermocompression welding, bonding, gap welding, soldering or other methods which produce a sufficiently large contact area with the component.
- the figure shows schematically, in an exemplary embodiment, a top view of two contact areas of an electrical thin-film resistor, which are divided into two smaller contact areas (1) by insulating strips (2), the insulating strips (2) being placed in such a way that they form a connecting track (3).
- belonging small contact surfaces (1) are only electrically connected to one another and to the connecting track (3) via a narrow point (4).
- the contact is made with two connecting wires (5) at the contact points (6).
Abstract
Description
Die Erfindung betrifft elektrische Schichtwiderstände, bestehend aus einer elektrischen Widerstandsstruktur, zwei Anschlußbahnen und zwei Kontaktflächen für die Anschlußdrähte, wobei die Kontaktflächen durch Isolierstreifen in jeweils zwei kleinere Kontaktflächen aufgeteilt sind.The invention relates to electrical sheet resistors, consisting of an electrical resistance structure, two connecting tracks and two contact surfaces for the connecting wires, the contact surfaces being divided into two smaller contact surfaces by insulating strips.
Bei der Herstellung von elektrischen Schichtwiderständen muß ein Feinabgleich des elektrischen Widerstandes vorgenommen werden. Die mögliche Streuung der Aufsetzpunkte von Prüfspitzen auf die Kontaktflächen hat dabei einen Einfluß auf die Messungen des elektrischen Widerstands.When producing electrical sheet resistors, a fine adjustment of the electrical resistance must be carried out. The possible scatter of the contact points of test probes on the contact surfaces has an influence on the measurements of the electrical resistance.
Um die notwendigen Herstellgenauigkeiten einzuhalten, werden vielfach sogenannte Vierpunktwiderstandsmessungen durchgeführt, bei denen auf die beiden Kontaktflächen des Meßwiderstands je zwei Prüfspitzen aufgesetzt werden. Durch den Meßwiderstand wird ein Meßstrom geleitet, der Spannungsabfall über den Widerstand wird durch das verbleibende Kontaktpaar bestimmt. Die Genauigkeit dieses Verfahrens ist groß.In order to maintain the necessary manufacturing accuracy, so-called four-point resistance measurements are often carried out, in which two test probes are placed on each of the two contact surfaces of the measuring resistor. A measuring current is passed through the measuring resistor, the voltage drop across the resistor is determined by the remaining pair of contacts. The accuracy of this method is great.
Die Messung liefert den elektrischen Widerstand zwischen den beiden Spannungsprüfspitzen.The measurement provides the electrical resistance between the two voltage test probes.
Durch Toleranzen bei der Positionierung der Spitzen auf den Kontaktflächen kann es deshalb zu Streuungen der abgeglichenen Meßwiderstände um den Sollwert kommen. Durch eine Strukturierung der Kontaktflächen in jeweils zwei Felder ist es möglich, die Genauigkeit der Aufsetzorte der Prüfspitzen vollständig aus dem Abgleichvorgang zu eliminieren. Ein solches Verfahren ist beispielsweise beschrieben in Philips Res. Repts. 13 (1958), 1-9.Tolerances in the positioning of the tips on the contact surfaces can therefore lead to scattering of the adjusted measuring resistances around the setpoint. By structuring the contact areas in two fields, it is possible to completely eliminate the accuracy of the placement of the test probes from the adjustment process. Such a method is described for example in Philips Res. Repts. 13 (1958), 1-9.
Die Kontaktflächen der Schichtwiderstände haben eine Größe, die für das Anschweißen oder sonstige Befestigungen je eines Anschlußdrahtes ausgelegt sind. Diese Flächen sind für den Platzbedarf von Prüfspitzen überdimensioniert. Andererseits ist der zusätzliche Platz bei einer Vierpunktmessung mit zwei zusätzlichen Kontaktflächen der für die Prüfspitzen notwendigen Größe nicht vorhanden. Eine Unterteilung der vorhandenen zwei Kontaktflächen in vier kleinere Flächen ergibt Kontaktflächen, die einzeln für eine Kontaktierung mit Anschlußdrähten zu klein sind.The contact surfaces of the sheet resistors have a size that are designed for welding or other fastenings for each connecting wire. These areas are oversized for the space required by test probes. On the other hand, the additional space for a four-point measurement with two additional contact surfaces of the size required for the test probes is not available. A subdivision of the existing two contact areas into four smaller areas results in contact areas which are individually too small for contacting with connecting wires.
Es war daher Aufgabe der vorliegenden Erfindung, elektrische Schichtwiderstände, bestehend aus einer elektrischen Widerstandsstruktur. zwei Anschlußbahnen und zwei Kontaktflächen für die Anschlußdrähte. wobei die Kontaktflächen durch Isolierstreifen in jeweils zwei kleinere Kontaktflächen aufgeteilt sind, zu entwickeln, die einen genauen Widerstandsfeinabgleich mittels einer Vierpunktwiderstandsmessung zugänglich sind und mit Anschlußdrähten kontaktiert werden können, ohne die Meßgenauigkeit damit zu verschlechtern.It was therefore an object of the present invention to provide electrical sheet resistors consisting of an electrical resistance structure. two connecting tracks and two contact surfaces for the connecting wires. whereby the contact areas are divided into two smaller contact areas by insulating strips, which can be accessed by means of a four-point resistance measurement and which can be contacted with connecting wires without impairing the measuring accuracy.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Isolierstreifen jeweils eine Engstelle zwischen den beiden zu einer zu einer Anschlußbahn gehörigen kleinen Kontaktflächen ausbilden und diese ausschließlich über diese Engstelle elektrisch miteinander und mit der Anschlußbahn verbunden sind, und daß die Isolierstreifen in ihrer Richtung so angeordnet sind, daß bei der Kontaktierung mit den Anschlußdrähten jeweils beide kleinen Kontaktflächen mit dem Anschlußdraht elektrisch leitend verbunden sind.This object is achieved in that the insulating strips each form a constriction between the two small contact surfaces belonging to a connecting path and these are electrically connected to one another and to the connecting path exclusively via this constriction, and that the insulating strips are arranged in their direction in this way that when contacting the connecting wires, both small contact surfaces are electrically conductively connected to the connecting wire.
Vorzugsweise ist der vom Anschlußdraht überbrückte Isolierstreifen senkrecht zur Drahtachse angeordnet.The insulating strip bridged by the connecting wire is preferably arranged perpendicular to the wire axis.
Außerdem ist es vorteilhaft, wenn die Engstelle unmittelbar am Ende des Isolierstreifens und möglichst nahe an der durch den Anschlußdraht geschaffenen Verbindungsstelle zwischen den jeweiligen beiden kleinen Kontaktflächen liegt.It is also advantageous if the constriction is located directly at the end of the insulating strip and as close as possible to the connection point created by the connecting wire between the respective two small contact surfaces.
Diese erfindungsgemäße Einteilung der beiden Kontaktflächen in jeweils zwei kleinere Kontaktflächen ist ohne Einfluß auf die erforderliche Genauigkeit bei der Anbringung der Anschlußdrähte. Sollte der zu befestigende Anschlußdraht über die Grenzen der kleineren Kontaktflächen hinausragen, so hat dies keinen abträglichen Einfluß auf den Abgleichwert, weil der elektrische Anschluß auf beiden Bereichen gegeben ist. Vorteilhaft ist auch, daß sich eine unterschiedliche Verschiebung der Anschlußdrähte quer zum Isolierstreifen nicht auf den elektrischen Widerstand auswirkt, wenn der elektrische Kontakt zu den beiden Kontaktflächen in der Nähe des Isolierstreifens liegt.This division of the two contact surfaces into two smaller contact surfaces according to the invention has no influence on the required accuracy when attaching the connecting wires. If the connecting wire to be fastened protrudes beyond the boundaries of the smaller contact areas, this has no detrimental effect on the adjustment value because the electrical connection is provided in both areas. It is also advantageous that a different displacement of the connecting wires transverse to the insulating strip does not affect the electrical resistance. when the electrical contact to the two contact surfaces is close to the insulating strip.
Die erfindungsgemäße Strukturierung der Kontaktflächen ist einsetzbar für elektrische Schichtwiderstände aus allen bekannten Materialien (z.B. Metalle wie Platin, Nickel; Halbleiter wie Silizium; leitende Kunststoffe), hergestellt in Dünn-oder Dickschichttechnik oder aus Folien. Geeignete Verfahren zur Herstellung der Isolierstreifen sind Laserstruktierieren, Trocken-oder Naßätzen.The structuring of the contact surfaces according to the invention can be used for electrical sheet resistors made of all known materials (e.g. metals such as platinum, nickel; semiconductors such as silicon; conductive plastics), produced using thin or thick film technology or from foils. Suitable methods for producing the insulating strips are laser structuring, dry or wet etching.
Bekannte Kontaktierungsverfahren für die Anschlußdrähte sind Thermokompressionsschweißen -bonden, Spaltkopfschweißen, Löten oder andere Verfahren, die eine genügend große Kontaktfläche zum Bauelement herstellen.Known contacting methods for the connecting wires are thermocompression welding, bonding, gap welding, soldering or other methods which produce a sufficiently large contact area with the component.
Die Abbildung zeigt schematisch in beispielhafter Ausbildungsform in Aufsicht zwei Kontaktflächen eines elektrischen Dünnfilmwiderstands, die durch Isolierstreifen (2) in jeweils zwei kleinere Kontaktflächen (1) aufgeteilt sind, wobei die Isolierstreifen (2) so gelegt sind, daß die zu einer Anschlußbahn (3) gehörenden kleinen Kontaktflächen (1) ausschließlich über eine Engstelle (4) elektrisch miteinander und mit der Anschlußbahn (3) verbunden sind. Die Kontaktierung erfolgt mit zwei Anschlußdrähten (5) an den Kontaktstellen (6).The figure shows schematically, in an exemplary embodiment, a top view of two contact areas of an electrical thin-film resistor, which are divided into two smaller contact areas (1) by insulating strips (2), the insulating strips (2) being placed in such a way that they form a connecting track (3). belonging small contact surfaces (1) are only electrically connected to one another and to the connecting track (3) via a narrow point (4). The contact is made with two connecting wires (5) at the contact points (6).
Claims (3)
dadurch gekennzeichnet,
daß die Isolierstreifen (2) jeweils eine Engstelle (4) zwischen den beiden zu einer Anschlußbahn (3) gehörigen kleinen Kontaktflächen (1) ausbilden und diese kleinen Kontaktflächen (1) ausschließlich über diese Engstelle (4) elektrisch miteinander und mit der Anschlußbahn (3) verbunden sind,
und daß die Isolierstreifen (2) in ihrer Richtung so angeordnet sind, daß bei der Kontaktierung mit den Anschlußdrähten (5) jeweils beide kleinen Kontaktflächen (1) mit dem Anschlußdraht (5) elektrisch leitend verbunden sind.Electrical sheet resistors, consisting of an electrical resistance structure, two connecting tracks and two contact areas for the connecting wires, the contact areas being divided into smaller contact areas by insulating strips,
characterized,
that the insulating strips (2) each form a constriction (4) between the two small contact areas (1) belonging to a connecting track (3) and these small contact areas (1) only electrically via this constriction (4) with one another and with the connecting track (3 ) are connected,
and that the insulating strips (2) are arranged in their direction so that when making contact with the connecting wires (5) both small contact surfaces (1) are electrically conductively connected to the connecting wire (5).
dadurch gekennzeichnet,
daß der vom Anschlußdraht (5) überbrückte Isolierstreifen (2) senkrecht zur Drahtachse angeordnet ist.Sheet resistors according to claim 1,
characterized,
that the insulating strip (2) bridged by the connecting wire (5) is arranged perpendicular to the wire axis.
dadurch gekennzeichnet,
daß die Engstelle (4) unmittelbar am Ende des Isolierstreifens (2) und möglichst nahe an der durch den Anschlußdraht (5) geschaffenen Verbindungsstelle zwischen den beiden kleinen Kontaktflächen (1) liegt.Film resistors according to claim 1 and 2,
characterized,
that the constriction (4) is located directly at the end of the insulating strip (2) and as close as possible to the connection point created by the connecting wire (5) between the two small contact surfaces (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4000301 | 1990-01-08 | ||
| DE4000301A DE4000301C1 (en) | 1990-01-08 | 1990-01-08 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0436776A2 true EP0436776A2 (en) | 1991-07-17 |
| EP0436776A3 EP0436776A3 (en) | 1992-04-15 |
| EP0436776B1 EP0436776B1 (en) | 1995-01-04 |
Family
ID=6397711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90115767A Expired - Lifetime EP0436776B1 (en) | 1990-01-08 | 1990-08-17 | Combination of film resistors with structured contact surfaces and connection wires |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0436776B1 (en) |
| DE (2) | DE4000301C1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007046907B4 (en) | 2007-09-28 | 2015-02-26 | Heraeus Sensor Technology Gmbh | Sheet resistance and method for its production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034149A (en) * | 1975-10-20 | 1977-07-05 | Western Electric Company, Inc. | Substrate terminal areas for bonded leads |
| US4053866A (en) * | 1975-11-24 | 1977-10-11 | Trw Inc. | Electrical resistor with novel termination and method of making same |
| WO1986001027A1 (en) * | 1984-07-31 | 1986-02-13 | Rosemount, Inc. | Method for forming a platinum resistance thermometer |
-
1990
- 1990-01-08 DE DE4000301A patent/DE4000301C1/de not_active Expired - Lifetime
- 1990-08-17 EP EP90115767A patent/EP0436776B1/en not_active Expired - Lifetime
- 1990-08-17 DE DE59008198T patent/DE59008198D1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034149A (en) * | 1975-10-20 | 1977-07-05 | Western Electric Company, Inc. | Substrate terminal areas for bonded leads |
| US4053866A (en) * | 1975-11-24 | 1977-10-11 | Trw Inc. | Electrical resistor with novel termination and method of making same |
| WO1986001027A1 (en) * | 1984-07-31 | 1986-02-13 | Rosemount, Inc. | Method for forming a platinum resistance thermometer |
Non-Patent Citations (1)
| Title |
|---|
| PHILIPS RESEARCH REPORTS Bd. 13, Nr. 1, Februar 1958, EINDHOVEN NL Seiten 1 - 9; VAN DER PAUW: 'A method of measuring specific resistivity and Hall effect of discs of arbitrary shape' * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0436776B1 (en) | 1995-01-04 |
| EP0436776A3 (en) | 1992-04-15 |
| DE4000301C1 (en) | 1991-05-23 |
| DE59008198D1 (en) | 1995-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE602005003777T2 (en) | Surface mount integrated current sensor | |
| DE112005003667B4 (en) | Electrical test probe | |
| DE602004010116T2 (en) | METHOD AND DEVICE FOR TESTING ELECTRICAL PROPERTIES OF AN OBJECT TO BE TESTED | |
| EP0285799A2 (en) | Device for the functional electric testing of wiring arrays, in particular of circuit boards | |
| DE19823140A1 (en) | Sense FET with main cell array (MCA) | |
| DE4433693C2 (en) | Chip resistance and its use | |
| WO2010121841A1 (en) | Electronic component and corresponding production method | |
| EP0858665A1 (en) | Adjustable voltage divider produced by hybrid technology | |
| DE3716240A1 (en) | Test adaptor, especially for an integrated circuit | |
| DE102012211924A1 (en) | Semiconductor module having a shunt resistor integrated in a terminal lug and method for detecting a current flowing through a load terminal of a semiconductor module | |
| WO2017036722A1 (en) | Connection device for connecting a measuring device to a connection pole of an energy accumulator of a motor vehicle | |
| EP3750237A1 (en) | Device for electrically contacting a solar cell during the measurement of electrical characteristics of the solar cell, and method for measuring electrical characteristics of a solar cell | |
| DE112021002813T5 (en) | Shunt resistor and method of making same | |
| DE3932572C2 (en) | ||
| EP0436776B1 (en) | Combination of film resistors with structured contact surfaces and connection wires | |
| EP1577676A1 (en) | Method and circuit for the protection of test contactors in high current measurements of semiconductor components | |
| CH421288A (en) | Device for measuring the spatial derivation of magnetic fields | |
| DE20320473U1 (en) | Electrical resistor assembly used to measure current from battery or generator for road vehicle electrical network has separate flat contact tags | |
| DE3927842A1 (en) | DEVICE FOR THE ELECTRICAL FUNCTIONAL TESTING OF WIRING AREAS, ESPECIALLY OF PCB | |
| DE3245178A1 (en) | SYMMETRIC TEMPERATURE SENSOR | |
| DE1214792B (en) | Method for measuring the specific resistance of a semiconductor layer applied to a semiconductor body with a low specific resistance, as well as an arrangement for carrying out the method | |
| DE102022204223A1 (en) | Device for measuring the temperature of a thermal source and temperature sensor | |
| DE2263231A1 (en) | DEVICE FOR ELECTRODE CONNECTION | |
| DE102008059694A1 (en) | Bus bar device and printed circuit board arrangement for motor vehicle, has electric connection formed between bus bar device and element on printed circuit board and provided at part of passage openings over solder | |
| DE102021107218A1 (en) | Device for temperature measurement and device for current determination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19900817 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT NL |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT NL |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MANNESMANN AKTIENGESELLSCHAFT |
|
| 17Q | First examination report despatched |
Effective date: 19930317 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL |
|
| ET | Fr: translation filed | ||
| REF | Corresponds to: |
Ref document number: 59008198 Country of ref document: DE Date of ref document: 19950216 |
|
| ITF | It: translation for a ep patent filed |
Owner name: GUZZI E RAVIZZA S.R.L. |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950314 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19950817 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19960301 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19950817 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19960430 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19960301 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19960501 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050817 |