DE102009016789A1 - Method for electrical functional testing of single-side or double-side electrically contactable test point of e.g. printed circuit board, involves arranging contact points, which fulfill condition in which area is greater than distance - Google Patents
Method for electrical functional testing of single-side or double-side electrically contactable test point of e.g. printed circuit board, involves arranging contact points, which fulfill condition in which area is greater than distance Download PDFInfo
- Publication number
- DE102009016789A1 DE102009016789A1 DE200910016789 DE102009016789A DE102009016789A1 DE 102009016789 A1 DE102009016789 A1 DE 102009016789A1 DE 200910016789 DE200910016789 DE 200910016789 DE 102009016789 A DE102009016789 A DE 102009016789A DE 102009016789 A1 DE102009016789 A1 DE 102009016789A1
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- DE
- Germany
- Prior art keywords
- test
- points
- contact
- distance
- tested
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2805—Bare printed circuit boards
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2812—Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Der Messaufnehmer (C, B) besteht aus einer aktiven Schaltmatrix (C) und darauf aufgelegter Kontaktmatte (B), wobei sich die bei beiden gleichförmig angeordneten, elektrisch leitenden Rasterkontaktpunkte (d) und (g) reproduzierbar elektrisch leitend miteinander verbinden. Die Schalter (S1 bis Sn) können über die Ansteuerleitungen (s1 bis sn) mit Hilfe der Steuer- und Meßelektronik F einzeln oder in Gruppen schnell angesteuert werden und somit über die Meßleitungen (m1 bis mn) die Rasterkontaktpunkte (d) mit der Auswertelektronik (F) elektrisch leitend verbinden.Of the Sensor (C, B) consists of an active switching matrix (C) and contact pad (B) applied thereto, both of which are in contact with each other uniform arranged, electrically conductive raster contact points (d) and (g) reproducible electrically conductively connect together. The switches (S1 to Sn) can over the Control lines (s1 to sn) with the help of the control and measuring electronics F be controlled individually or in groups quickly and thus on the test leads (m1 to mn) the raster contact points (d) with the evaluation electronics (F) electrically conductively connect.
Die Kontaktmatte (B) stellt die mechanische Verbindung zwischen Schaltmatrix (C) und Prüfling (A) sowie die elektrische Verbindung zwischen Rasterkontaktpunkt (d) und zu testenden Prüfpunkten (a) her. Ausreichende Kompressibilität der Kontaktmatte (B) in Z-Richtung gleicht übliche Oberflächenstrukturen des Prüflings (A) aus. In X- und Y-Richtung ist die Kontaktmatte (B) ausreichend formstabil. Alle Rasterkontaktpunkte (d) der Kontaktmatte (B) sind elektrisch gegeneinander isoliert.The Contact mat (B) provides the mechanical connection between switching matrix (C) and examinee (A) and the electrical connection between the grid contact point (d) and test points to be tested (a) ago. Sufficient compressibility of the contact mat (B) in the Z direction is like usual surface structures of the test piece (A) off. In the X and Y direction, the contact mat (B) is sufficient dimensionally stable. All grid contact points (d) of the contact mat (B) are electrically isolated from each other.
Ein elektrisch meßbarer Stromfluß entsteht bei geschlossenem Stromkreis über die Schnittstelle E, selektierte Schalter (S1 bis Sn), Rasterkontaktpunkt (d) und (g) sowie zu testende Leiterbahnnetze. Über die Meßleitungen (m1 bis mn) werden Stromfluss und elektrische Widerstände gemessen. Kontakt- und Übergangswiderstände sind gering, reproduzierbar und können daher verrechnet oder über bekannte messtechnische Verfahren wie z. B. Vierleitertechnik gegebenenfalls kompensiert werden.One electrically measurable Current flow arises with closed circuit via the interface E, selected switches (S1 to Sn), raster contact point (d) and (g) and to be tested interconnects. Via the test leads (m1 to mn) Current flow and electrical resistances measured. Contact and contact resistances are low, reproducible and can therefore charged or over known metrological methods such. B. four-wire technology, if necessary be compensated.
Mit Hilfe der bekannten Testdaten (Gerber Files, CAD-Daten o. ä) und durch die zu Beginn des Testverlauf eingebrachte Lageerkennung wird das tatsächliche Leiterbild berechnet und die zur Herstellung geschlossener Stromkreise notwendigen Schalter der aktiven Schaltmatrix angesteuert, welche gezielt die Verbindung zu den Prüfpunkten (a) des Prüflings (A) herstellen. Somit werden alle auf dem Prüfling (A) befindliche Leiterbahnnetze, einzelne Prüfpunkte (a) und/oder miteinander verbundene Netzwerkendpunkte, auf notwendige elektrische Verbindung, Unterbrechung und Kurzschluss hin getestet.With Help of known test data (Gerber files, CAD data o. Ä.) And by the introduced at the beginning of the test history position is the actual Conductor image calculated and for the production of closed circuits necessary switch the active switching matrix driven, which specifically the connection to the checkpoints (a) the candidate (A) make. Thus, all on the test specimen (A) located interconnect networks, individual checkpoints (a) and / or interconnected network endpoints, to necessary electrical connection, open circuit and short circuit tested.
Bei einseitig kontaktierbaren Leiterbahnnetzen erfolgt im Gut-Test ein Stromfluß von der Mess- und Steuereinheit (F) über die Schnittstelle (E), den Meßaufnehmer (B, C), das zu prüfende Leiterbahnnetz des Prüflings (A) und den gleichen Meßaufnehmer (B, C) wieder zurück. Bei beidseitig kontaktierbaren Leiterbahnnetzen fließt der Strom über den zweiten Meßaufnehmer zur Mess- und Steuereinheit (F) zurück.at One-sided contactable interconnect networks are in the good test Current flow of the measuring and control unit (F) via the interface (E), the transducer (B, C), the test to be tested Conductor network of the test object (A) and the same transducer (B, C) back again. In both sides contactable interconnects of the current flows through the second transducer back to the measuring and control unit (F).
Testbar sind ein- oder beidseitig kontaktierbare, elektrische Schaltungen, deren kleinster tatsächlicher Prüfpunktabstand (b) größer ist, als die Summe aus Rasterkontaktpunktdurchmesser (d) + Rasterkontaktpunktabstand (e) der Kontaktmatte (B). Die Prüfpunktfläche (c) muss größer sein als der kleinste Abstand zwischen zwei Rasterkontaktpunkten (d) der Kontaktmatte (B).testable are contactable on one or both sides, electrical circuits, their smallest actual checkpoint distance (b) is larger as the sum of raster contact point diameter (d) + raster contact point distance (e) the contact mat (B). The checkpoint area (c) has to be bigger as the smallest distance between two raster contact points (d) the contact mat (B).
Das Bestimmen der Lage des Prüflings (A) auf der Kontaktmatte (B) erfolgt mit Hilfe von mindestens zwei identifizierbaren Leiterbahnnetzendpunkten (a) auf dem Prüfling (A) durch gezieltes Aufschalten von Testströmen und bekannten Approximationsverfahren. Spezielle Auflage- oder Anlegehilfen sind nicht notwendig.The Determining the position of the test object (A) on the contact mat (B) with the help of at least two Identifiable interconnect network endpoints (a) on the device under test (A) by targeted application of test currents and known Approximationsverfahren. Special edition or landing aids are not necessary.
Die vorgestellte Erfindung erlaubt mindestens folgende Auswertungen: Soll/Ist Vergleich elektrischer Funktionswerte; Unterbrechungstest; Kurzschlusstest; Erkennung und Kompensation von linearen Versatzen oder Winkelversatzen und Verzerrungen im Leiterbild mit Hilfe bekannter trigonometrischer Berechnungen. Alle Leiterplatten sind testbar, soweit die Grundvoraussetzungen zur Prüfbarkeit des Prüflings (A), wie oben beschrieben, erfüllt sind.The presented invention allows at least the following evaluations: Target / actual comparison of electrical function values; Interruption test; Short-circuit test; Detection and compensation of linear misalignments or Angular misalignments and distortions in the conductor pattern using known trigonometric calculations. All printed circuit boards are testable, as far as the basic requirements for the testability of the test object (A), as described above are.
Das hier vorgestellte prüflingsunabhängige Testsystem erreicht hohe Testgeschwindigkeiten, kann automatisiert werden und bietet sich somit an für den elektrischen Funktionstest marktüblicher Großserienproduktionen, Kleinserien und Prototypentests von unbestückten ein- und beidseitigen elektrischen Schaltungsträgern wie Leiterplatten, Substraten, Keramiken, Bond- und Flexschaltungen. Mechanische Beanspruchungen von Prüfpunkten entstehen nicht. Niedrigere Anforderungen an den Anpressdruck reduzieren Mechanik und somit Baugröße und Kosten von Testgeräten nach diesem Erfindungsprinzip.The here presented test-independent test system Achieves high test speeds, can be automated and thus offers itself for the electrical function test of market standard mass production, small series and prototype tests of unpopulated single and double-sided electrical circuit carriers such as printed circuit boards, substrates, Ceramics, bonding and flex circuits. Mechanical stresses of checkpoints do not arise. Reduce lower requirements for the contact pressure Mechanics and thus size and cost of test equipment according to this principle of the invention.
Zu
- A
- = Prüfling (z. B. Leiterplatte) mit Leiterbahnnetzen, Leiterbahnnetzendpunkten und anderen Testpunkten
- B
- = Kontaktmatte mit gleichmäßig verteilten Kontaktrasterpunkten
- C
- = Aktive Schaltmatrix mit gleichmäßig verteilten, einzelnen oder in Gruppen schaltbaren, elektrischen Schalterelementen
- D
- = Grundplatte
- E
- = Mess- und Schalterschnittstelle zur Steuerung- und Messelektronik
- F
- = Steuer- und Messelektronik
- A
- = DUT (eg circuit board) with trace nets, trace network endpoints and other test points
- B
- = Contact mat with evenly distributed contact grid points
- C
- = Active switching matrix with uniformly distributed, individual or group-switchable, electrical switch elements
- D
- = Base plate
- e
- = Measuring and switch interface to the control and measuring electronics
- F
- = Control and measuring electronics
Zu
Zu
- m1, m2, m3, m4
- = Messleitungen
- s1, s2
- = Steuerleitungen
- S1, S2
- = Schalter
- g
- = Rasterkontakte der Schaltmatrix
- m1, m2, m3, m4
- = Test leads
- s1, s2
- = Control lines
- S1, S2
- = Switch
- G
- = Raster contacts of the switching matrix
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910016789 DE102009016789B4 (en) | 2009-04-07 | 2009-04-07 | Device of a test-independent test system for electrical functional test of one or both sides electrically contactable test points and method thereto |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910016789 DE102009016789B4 (en) | 2009-04-07 | 2009-04-07 | Device of a test-independent test system for electrical functional test of one or both sides electrically contactable test points and method thereto |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102009016789A1 true DE102009016789A1 (en) | 2010-10-21 |
DE102009016789B4 DE102009016789B4 (en) | 2014-04-03 |
Family
ID=42750923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910016789 Expired - Fee Related DE102009016789B4 (en) | 2009-04-07 | 2009-04-07 | Device of a test-independent test system for electrical functional test of one or both sides electrically contactable test points and method thereto |
Country Status (1)
Country | Link |
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DE (1) | DE102009016789B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110554301A (en) * | 2019-09-06 | 2019-12-10 | 依利安达(广州)电子有限公司 | Method for detecting machine resistance of electric measuring machine and printed circuit board electric measuring machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0369112A1 (en) * | 1988-11-12 | 1990-05-23 | MANIA GmbH & Co. | Adapter for electronic test devices for printed-circuit boards and the like |
DE10043728C2 (en) * | 2000-09-05 | 2003-12-04 | Atg Test Systems Gmbh | Method for testing printed circuit boards and use of a device for carrying out the method |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2156532B (en) * | 1984-03-24 | 1988-07-20 | Plessey Co Plc | Apparatus for testing a printed circuit board |
-
2009
- 2009-04-07 DE DE200910016789 patent/DE102009016789B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0369112A1 (en) * | 1988-11-12 | 1990-05-23 | MANIA GmbH & Co. | Adapter for electronic test devices for printed-circuit boards and the like |
DE10043728C2 (en) * | 2000-09-05 | 2003-12-04 | Atg Test Systems Gmbh | Method for testing printed circuit boards and use of a device for carrying out the method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110554301A (en) * | 2019-09-06 | 2019-12-10 | 依利安达(广州)电子有限公司 | Method for detecting machine resistance of electric measuring machine and printed circuit board electric measuring machine |
Also Published As
Publication number | Publication date |
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DE102009016789B4 (en) | 2014-04-03 |
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