EP0436776B1 - 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
- EP0436776B1 EP0436776B1 EP90115767A EP90115767A EP0436776B1 EP 0436776 B1 EP0436776 B1 EP 0436776B1 EP 90115767 A EP90115767 A EP 90115767A EP 90115767 A EP90115767 A EP 90115767A EP 0436776 B1 EP0436776 B1 EP 0436776B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact surfaces
- combination
- connecting wires
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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 a combination of connecting wires and 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 two smaller contact areas 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.
- an electrical contact for 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 are accessible to a precise resistance fine adjustment by means of a four-point resistance measurement and are contacted with connecting wires without reducing the measuring accuracy.
- An electrical sheet resistance as specified in the preamble of claim 1 is known from WO 86/01027.
- the object is achieved in that the insulating strips and the connecting wires are arranged in their direction so that 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.
- the division of the two contact areas into two smaller contact areas does not affect 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 adverse 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 across the insulating strip does not affect the electrical resistance. if the electrical contact to the two contact surfaces is close to the insulating strip.
- the structuring of the contact surfaces 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 positioned such that they lead to 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).
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Leads Or Probes (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Description
Die Erfindung betrifft eine Kombination von Anschlußdrähten und elektrischen Schichtwiderständen, 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 a combination of connecting wires and 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 two smaller contact areas 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 manufacturing electrical film 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 cause the adjusted measuring resistances to scatter 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, eine elektrische Kontaktierung für 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 einem genauen Widerstandsfeinabgleich mittels einer Vierpunktwiderstandsmessung zugänglich sind und mit Anschlußdrähten kontaktiert sind, ohne die Meßgenauigkeit damit zu verschlechtern.It was therefore an object of the present invention, an electrical contact for 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 are accessible to a precise resistance fine adjustment by means of a four-point resistance measurement and are contacted with connecting wires without reducing the measuring accuracy.
Aus W0 86/01027 ist ein elektrischen Schichtwiderstand wie im Oberbegriff des Anspruchs 1 angegeben, bekannt.An electrical sheet resistance as specified in the preamble of
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Isolierstreifen und die Anschlußdrähte in ihrer Richtung so angeordnet sind, daß jeweils beide kleinen Kontaktflächen mit dem Anschlußdraht elektrisch leitend verbunden sind.The object is achieved in that the insulating strips and the connecting wires are arranged in their direction so that 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.
Die 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.The division of the two contact areas into two smaller contact areas does not affect 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 adverse 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 across the insulating strip does not affect the electrical resistance.
if the electrical contact to the two contact surfaces is close to the insulating strip.
Die 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 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 positioned such that they lead to 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)
- A combination of connecting wires and film resistors, consisting of an electric resistance structure, two connecting tracks and two contact surfaces for the connecting wires, the contact surfaces being divided into smaller contact surfaces in each case by insulating strips, and the insulating strips (2) each forming a constriction (4) between the two small contact surfaces (1) associated with one connecting track (3) and these small contact surfaces (1) being connected electrically together and to the connecting track (3) exclusively via this constriction (4), characterised in that the insulating strips (2) and the connecting wires (5) are oriented such that in each case both small contact surfaces (1) are connected to the connecting wire (5) so as to be electrically conductive.
- A combination according to Claim 1, characterised in that the insulating strip (2) bridged by the connecting wire (5) is arranged at right-angles to the wire axis.
- A combination according to Claims 1 and 2, characterised in that the constriction (4) lies immediately at the end of the insulating strip (2) and as close as possible to the junction point between the two small contact surfaces (1) which is provided by the connecting wire (5).
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 EP0436776A2 (en) | 1991-07-17 |
| EP0436776A3 EP0436776A3 (en) | 1992-04-15 |
| EP0436776B1 true 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 |
Family Cites Families (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 |
| IN165267B (en) * | 1984-07-31 | 1989-09-09 | Rosemount Inc |
-
1990
- 1990-01-08 DE DE4000301A patent/DE4000301C1/de not_active Expired - Lifetime
- 1990-08-17 DE DE59008198T patent/DE59008198D1/en not_active Expired - Fee Related
- 1990-08-17 EP EP90115767A patent/EP0436776B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59008198D1 (en) | 1995-02-16 |
| EP0436776A2 (en) | 1991-07-17 |
| DE4000301C1 (en) | 1991-05-23 |
| EP0436776A3 (en) | 1992-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2274749B1 (en) | Electronic component and corresponding production method | |
| DE602005003777T2 (en) | Surface mount integrated current sensor | |
| EP1492130B1 (en) | Resistor arrangement, process for production and measuring circuit | |
| DE19823140A1 (en) | Sense FET with main cell array (MCA) | |
| DE4433693C2 (en) | Chip resistance and its use | |
| DE112017002633T5 (en) | Shunt resistor and assembled structure with a shunt resistor | |
| DE102012211924B4 (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 | |
| DE102010051007A1 (en) | Shunt resistance and manufacturing process therefor | |
| DE602004010116T2 (en) | METHOD AND DEVICE FOR TESTING ELECTRICAL PROPERTIES OF AN OBJECT TO BE TESTED | |
| WO1998006110A1 (en) | Adjustable voltage divider produced by hybrid technology | |
| DE102012212946B4 (en) | Current detection system | |
| WO2017036722A1 (en) | Connection device for connecting a measuring device to a connection pole of an energy accumulator of a motor vehicle | |
| DE112021002813T5 (en) | Shunt resistor and method of making same | |
| DE69400014T2 (en) | Resistance elements for current measurement and connection and measuring modules. | |
| EP0436776B1 (en) | Combination of film resistors with structured contact surfaces and connection wires | |
| DE69414364T2 (en) | Connection plate arrangement for linear dual switching module | |
| DE3850638T2 (en) | Soldering point testing device by electronically measuring the area of the soldering joint. | |
| DE102020007556A1 (en) | Resistor arrangement and method for its manufacture | |
| WO2021197921A1 (en) | Device for temperature measurement and device for current determination | |
| DE68909456T2 (en) | Mounting arrangement for measuring the static characteristics of active microwave components with 3 connections. | |
| DE102020108880A1 (en) | Sensor devices with a bypass current path and associated manufacturing processes | |
| DE2031285C3 (en) | Process for the production of a number of plate-shaped electronic components with a plastic housing | |
| WO2021259664A2 (en) | Resistance measuring element and current measuring circuit comprising such a resistance measuring element | |
| DE29616313U1 (en) | Electrical component for detecting the flowing electrical current in multi-conductor systems and device for fastening potential connections in measuring resistors | |
| 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 |
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 | ||
| 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 |