DE10341206A1 - Appliance for improving reliability of BGA (ball grid array) solder connections between BGA component substrate, whose contact pads are fitted with solder balls or bumps - Google Patents
Appliance for improving reliability of BGA (ball grid array) solder connections between BGA component substrate, whose contact pads are fitted with solder balls or bumps Download PDFInfo
- Publication number
- DE10341206A1 DE10341206A1 DE10341206A DE10341206A DE10341206A1 DE 10341206 A1 DE10341206 A1 DE 10341206A1 DE 10341206 A DE10341206 A DE 10341206A DE 10341206 A DE10341206 A DE 10341206A DE 10341206 A1 DE10341206 A1 DE 10341206A1
- Authority
- DE
- Germany
- Prior art keywords
- bga
- bumps
- solder balls
- contact pads
- solder
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
- H01L23/49816—Spherical bumps on the substrate for external connection, e.g. ball grid arrays [BGA]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
- H01L2224/818—Bonding techniques
- H01L2224/81801—Soldering or alloying
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/094—Array of pads or lands differing from one another, e.g. in size, pitch, thickness; Using different connections on the pads
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/0465—Shape of solder, e.g. differing from spherical shape, different shapes due to different solder pads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
Die Erfindung betrifft eine Anordnung zur Verbesserung der Zuverlässigkeit von BGA-Lötverbindungen zwischen einem Substrat eines BGA-Bausteines, dessen Kontaktpads mit Lötbällen oder Bumps in einem asymmetrischen Ball Layout versehen sind und einer Leiterplatte.The The invention relates to an arrangement for improving the reliability BGA solder joints between a substrate of a BGA device, its contact pads with solder balls or bumps are provided in an asymmetric ball layout and a printed circuit board.
Bei derartigen BGA-Bausteine sind die Chips auf dem Substrat durch Chipbonden befestigt. Zur Herstellung elektrischer Verbindungen zwischen den Bondpads des Halbleiterchips und Kontaktinseln auf dem Substrat werden üblicher Weise elektrische Verbindungen in Form von Drahtbrücken verwendet. Zum Schutz vor Beschädigungen sind das Chip und das Substrat zumindest teilweise mit einer Moldmasse umhüllt.at such BGA devices are the chips on the substrate by chip bonding attached. For making electrical connections between bond pads of the semiconductor chip and contact pads on the substrate become more common Way used electrical connections in the form of wire bridges. To the Protection against damage the chip and the substrate are at least partially filled with a molding compound envelops.
Um derartige BGA-Bausteine auf Leiterplatten montieren zu können, erfolgt innerhalb des Substrates eine Umverdrahtung der Kontakte auf das nächst höhere Verdrahtungsniveau der Leiterplatte, so dass das Raster der auf dem Substrat angeordneten Lötbälle oder Bumps dem Raster der Kontaktinseln auf der Leiterplatte entspricht. Das Design der Kontaktanordnungen wird dabei durch das Chip-Design bestimmt, wobei die Dimensionen sämtlicher Kontakte gleich sind.Around to be able to mount such BGA components on printed circuit boards, takes place Within the substrate, a rewiring of the contacts to the next higher level wiring the circuit board, leaving the grid of the arranged on the substrate Solder balls or Bumps corresponds to the grid of contact pads on the circuit board. The design of the contact arrangements is determined by the chip design determined, wherein the dimensions of all contacts are the same.
Aus geometrischen und materialspezifischen Gründen ergeben sich während der Zuverlässigkeitstests bzw. dem Burn-In lokal für die einzelnen Kontakte unterschiedliche Stresseinträge (Warpage). Das gilt auch bei einer besonderen Beanspruchung während der Betriebszeit. Insbesondere unter Temperaturwechselbelastung werden geometrisch exponierte Ein zelkontakte mechanisch besonders belastet und fallen in der Regel durch Abrisse am Landing-Pad aus. Das kann sowohl an der Leiterplatte als auch am Baustein erfolgen. Dieser Sachverhalt ist bei einer asymmetrischen Anordnung der Lötbälle besonders gravierend.Out geometric and material specific reasons arise during the reliability tests or the burn-in locally for the individual contacts different stress entries (Warpage). The also applies to a special load during the operating time. Especially Under thermal cycling are geometrically exposed A zelkontakte mechanically particularly stressed and usually fall through breaks out at the landing pad. That can be done on the circuit board as well done on the block. This situation is at an asymmetric Arrangement of solder balls especially serious.
Um derartige Abrisse zu vermeiden, werden partiell größere Balldurchmesser verwendet und/oder das Pad-Design verändert. Dies Änderungen betreffen immer das gesamte BGA und beeinflussen lokale Stresseinträge nicht. Diese Maßnahmen können allerdings nur begrenzt eingesetzt werden, da Limitierungen durch die Package-Abmessungen und die definierten Kontaktabstände bestehen. Größere Balldurchmesser und damit die Erhöhung der Lotmenge ist nicht unbegrenzt möglich, weil dann andere Fehlermechanismen, insbesondere Kurzschlüsse, aktiviert werden.Around To avoid such breaks, partially larger ball diameter used and / or changed the pad design. This changes always affect the entire BGA and do not affect local stress entries. These measures can However, only limited use, as limited by the package dimensions and the defined contact distances exist. Bigger ball diameter and thus the increase of Lot quantity is not unlimited, because then activates other failure mechanisms, in particular short circuits become.
Der Erfindung liegt die Aufgabe zugrunde, eine Anordnung zur Verbesserung der Zuverlässigkeit von BGA-Lötverbindungen zu schaffen, mit der die im Stand der Technik zu verzeichnenden Nachteile vermieden werden.Of the Invention is based on the object, an arrangement for improvement the reliability BGA solder joints to create, with that in the state of the art to be recorded Disadvantages are avoided.
Die der Erfindung zugrunde liegende Aufgabe wird bei einer Anordnung der eingangs genannten Art dadurch gelöst, dass ausgewählte Kontaktpads auf dem Substrat und/oder Kontaktflächen auf der Leiterplatte und/oder die Lötbälle bzw. Bumps jeweils eines BGA-Bausteins größere Abmessungen aufweisen, wobei die größeren Kontakte/Lötbälle bzw. Bumps in den Bereichen erhöhten Stresseintrages angeordnet sind.The The object underlying the invention is in an arrangement of the type mentioned solved in that selected contact pads the substrate and / or contact surfaces on the circuit board and / or the solder balls or bumps one each BGA device larger dimensions have, with the larger contacts / solder balls or bumps increased in the areas Stress entries are arranged.
Durch die Erfindung können lokal unterschiedliche Stresseinträge kontrolliert werden. Realisiert werden kann dies durch einen mehrstufigen Solderball Attach Prozess (Lötballmontage) oder im Fall des Druckens von Solderbumps über ein entsprechendes Schablonendesign. Auch ist zusätzlich eine Opti mierung der elektrischen Performance der BGA-bauelemente möglich.By the invention can locally different stress entries are controlled. implemented This can be done through a multi-stage Solderball Attach process (Lötballmontage) or in the case of printing solder bumps via a corresponding template design. Also is additional optimizing the electrical performance of the BGA components possible.
Die größeren Kontakte/Lötbälle bzw. Bumps sind bevorzugt in Eckpositionen des Ball Layouts angeordnet, wobei mindestens ein größerer Kontakt/Lötball bzw. Bump vorgesehen ist.The larger contacts / solder balls or Bumps are preferably arranged in corner positions of the ball layout, wherein at least one larger contact / solder ball or Bump is provided.
Eine weitere Fortführung der Erfindung sieht vor, dass ausgewählte Kontaktpads auf dem Substrat und/oder Kontaktflächen auf der Leiterplatte einen unrunden Umriss aufweisen und beispielsweise oval sind.A further continuation The invention provides that selected contact pads on the substrate and / or contact surfaces on the circuit board have a non-circular outline and, for example are oval.
Die der Erfindung zugrunde liegende Aufgabe wird bei einer Anordnung der eingangs genannten Art ferner dadurch gelöst, dass auf ausgewählten Kontaktpads auf dem Substrat und/oder Kontaktflächen auf der Leiterplatte mit größerer Kontaktfläche jeweils mehrere Lötbälle oder Bumps mit Standardabmessungen nebeneinander angeordnet sind.The The object underlying the invention is in an arrangement of the type mentioned above also solved that on selected contact pads on the substrate and / or contact surfaces on the circuit board with larger contact area respectively several soldering balls or Bumps with standard dimensions are arranged side by side.
Der besondere Vorteil dieser Ausführungsform ist, dass der Solder Ball attach process in einem Schritt erfolgen kann. Ein möglicher Kurzschluss der auf der größeren Kontaktfläche angeordneten Lötbälle ist unschädlich.Of the particular advantage of this embodiment is that the Solder Ball attach process done in one step can. A possible Short circuit arranged on the larger contact surface Solder balls is harmless.
In einer Ausgestaltung der Erfindung sind die Kontaktpads und/oder Kontaktflächen mit größerer Kontaktfläche in einem oder mehreren Bereichen mit erhöhtem Stresseintrag angeordnet.In An embodiment of the invention are the contact pads and / or contact surfaces with larger contact area in one or more areas with elevated Stress entry arranged.
Die Erfindung soll nachfolgend an einem Ausführungsbeispiel näher erläutert werden. In den zugehörigen Zeichnungen zeigen:The invention is intended below to a Embodiment will be explained in more detail. In the accompanying drawings show:
Aus
In
Auf
diese Weise wird im Bereich mit erhöhtem Stresseintrag
Werden Lötbälle als Verbindungselement eingesetzt, so können diese in einem mehrstufigen Lötball-Montageprozess realisiert werden. Im Falle der Verwendung von Bumps können diese mit einem entsprechenden Schablonendesign realisiert werden. Gleichzeitig ist eine Optimierung der elektrischen Perfor mance der BGA-Bausteine möglich, indem die größeren Kontakte beispielsweise für die Energiezuführung verwendet werden.Become Solder balls as Used connecting element, so they can in a multi-stage solder ball assembly process will be realized. In case of using bumps these can be realized with a corresponding stencil design. simultaneously is an optimization of the electrical performance of the BGA devices possible, by the larger contacts for example the energy supply be used.
Um
einen mehrstufigen Lötball-Montageprozess
zu vermeiden, besteht grundsätzlich
auch die Möglichkeit,
auf den ausgewählten
Kontaktpads
Weiterhin
können
die größeren Kontaktpads
- 11
- Substrat eines BGA-Bausteinssubstratum a BGA device
- 22
- Lötball/BumpSolder ball / bump
- 33
- Kontaktpadcontact pad
- 44
- Kontaktflächecontact area
- 55
- Leiterplattecircuit board
- 66
- Bereich mit erhöhtem StresseintragArea with elevated stress entry
- 77
- größerer Kontaktpadlarger contact pad
- 88th
- größere Kontaktflächelarger contact area
- 99
- größerer Lötball/Bumplarger solder ball / bump
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10341206A DE10341206A1 (en) | 2003-09-04 | 2003-09-04 | Appliance for improving reliability of BGA (ball grid array) solder connections between BGA component substrate, whose contact pads are fitted with solder balls or bumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10341206A DE10341206A1 (en) | 2003-09-04 | 2003-09-04 | Appliance for improving reliability of BGA (ball grid array) solder connections between BGA component substrate, whose contact pads are fitted with solder balls or bumps |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10341206A1 true DE10341206A1 (en) | 2005-04-14 |
Family
ID=34305599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10341206A Ceased DE10341206A1 (en) | 2003-09-04 | 2003-09-04 | Appliance for improving reliability of BGA (ball grid array) solder connections between BGA component substrate, whose contact pads are fitted with solder balls or bumps |
Country Status (1)
Country | Link |
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DE (1) | DE10341206A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130107484A1 (en) * | 2010-08-06 | 2013-05-02 | Panasonic Corporation | Circuit board and method for manufacturing same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871014A (en) * | 1969-08-14 | 1975-03-11 | Ibm | Flip chip module with non-uniform solder wettable areas on the substrate |
US3984860A (en) * | 1973-06-04 | 1976-10-05 | International Business Machines Corporation | Multi-function LSI wafers |
US5859474A (en) * | 1997-04-23 | 1999-01-12 | Lsi Logic Corporation | Reflow ball grid array assembly |
US6444563B1 (en) * | 1999-02-22 | 2002-09-03 | Motorlla, Inc. | Method and apparatus for extending fatigue life of solder joints in a semiconductor device |
-
2003
- 2003-09-04 DE DE10341206A patent/DE10341206A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871014A (en) * | 1969-08-14 | 1975-03-11 | Ibm | Flip chip module with non-uniform solder wettable areas on the substrate |
US3984860A (en) * | 1973-06-04 | 1976-10-05 | International Business Machines Corporation | Multi-function LSI wafers |
US5859474A (en) * | 1997-04-23 | 1999-01-12 | Lsi Logic Corporation | Reflow ball grid array assembly |
US6444563B1 (en) * | 1999-02-22 | 2002-09-03 | Motorlla, Inc. | Method and apparatus for extending fatigue life of solder joints in a semiconductor device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130107484A1 (en) * | 2010-08-06 | 2013-05-02 | Panasonic Corporation | Circuit board and method for manufacturing same |
US9198284B2 (en) * | 2010-08-06 | 2015-11-24 | Panasonic Intellectual Property Management Co., Ltd. | Circuit board and method for manufacturing same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |