DE2951296C2 - - Google Patents
Info
- Publication number
- DE2951296C2 DE2951296C2 DE19792951296 DE2951296A DE2951296C2 DE 2951296 C2 DE2951296 C2 DE 2951296C2 DE 19792951296 DE19792951296 DE 19792951296 DE 2951296 A DE2951296 A DE 2951296A DE 2951296 C2 DE2951296 C2 DE 2951296C2
- Authority
- DE
- Germany
- Prior art keywords
- insulating body
- heat
- insulating
- thermally conductive
- particles
- 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
Links
- 239000002245 particle Substances 0.000 claims description 23
- 239000011810 insulating material Substances 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920002457 flexible plastic Polymers 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 description 1
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229940125904 compound 1 Drugs 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3733—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon having a heterogeneous or anisotropic structure, e.g. powder or fibres in a matrix, wire mesh, porous structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/62—Insulating-layers or insulating-films on metal bodies
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
- H05K7/20445—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing the coupling element being an additional piece, e.g. thermal standoff
- H05K7/20454—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing the coupling element being an additional piece, e.g. thermal standoff with a conformable or flexible structure compensating for irregularities, e.g. cushion bags, thermal paste
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Laminated Bodies (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
Die vorliegende Erfindung betrifft einen flächenhaft aus gebildeten Isolierkörper zur Zwischenfügung zwischen elek trisch leitende Oberflächen und zur Erzielung eines Wärme überganges zwischen den elektrisch leitenden Oberflächen, der aus einem flexiblen Isolierstoff mit eingelagerten wärme leitenden Teilchen besteht.The present invention relates to an area formed insulating body for interposition between elek tric conductive surfaces and to achieve a warmth transition between the electrically conductive surfaces, the made of a flexible insulating material with embedded heat conductive particles.
Bei einer Vielzahl von technischen Vorrichtungen ist es er wünscht, zwei metallische Teile gegeneinander elektrisch zu isolieren und gleichzeitig einen guten Wärmeübergang zwischen den beiden metallischen Teilen zu erhalten. Solche Probleme treten beispielsweise auf, wenn es gilt, Verlustwärme von elektrischen Elektroden, wie Kollektorelektroden von Wander feldröhren oder Kollektorelektroden von Transistoren abzuführen. It is with a variety of technical devices wishes to electrically connect two metallic parts to each other isolate and at the same time a good heat transfer between to get the two metallic parts. Such problems occur, for example, when it comes to heat loss of electrical electrodes, such as Wander electrodes field tubes or collector electrodes of transistors.
Für diesen Zweck sind z. B. Keramikteile, Glimmplättchen oder auch Verbundwerkstoffe mit vorwiegend eingelagerten isolieren den Teilen gebräuchlich. So ist aus der US-PS 33 91 242 ein aus wärmeleitendem Fett mit eingefügtem Isoliergewebe bestehen der Isolierkörper bekannt. Ein aus der US-PS 33 25 582 bekann ter Isolierträger besteht aus einem Kunststoff mit eingefügtem Isoliergewebe.For this purpose, e.g. B. ceramic parts, glow plates or also insulate composite materials with mainly embedded ones the parts in use. So is from US-PS 33 91 242 consist of heat-conducting grease with inserted insulating fabric the insulating body is known. One known from US-PS 33 25 582 The insulating support consists of a plastic with an inserted Insulating fabric.
Aufgabe der vorliegenden Erfindung ist es, einen neuartigen Isolierkörper der eingangs genannten Art anzugeben, der auch bei gewölbten Flächen leicht einsetzbar ist sowie größere Drücke bei definierter Dicke aushält.The object of the present invention is a novel Insulating body of the type mentioned to specify the one is easy to use on curved surfaces as well as larger ones Endures pressures at a defined thickness.
Gemäß der Erfindung wird vorgeschalgen, daß die wärmeleitenden Teilchen tonnenartig ausgebildet sind und ihre beiden Deck flächen jeweils Teile der beiden Oberflächen des Isolierkör pers bilden.According to the invention it is proposed that the heat-conducting Particles are barrel-shaped and their two decks surface parts of the two surfaces of the insulating body form pers.
Der beschriebene Isolierkörper gewährleistet einen guten Wärmeübergang zwischen den metallischen Flächen. Er läßt sich in einfacher Weise auf die gewünschte Größe zuschneiden, er ist flexibel und er hält verhältnismäßig große Drucke und Beschleunigungskräfte aus.The insulating body described ensures a good one Heat transfer between the metallic surfaces. He lets himself easily cut to size, he is flexible and it holds relatively large prints and Acceleration forces.
Gemäß einer Weiterbildung der Erfindung wird ein Verfahren zum Herstellen eines solchen Isolierkörpers angegeben, das darin besteht, daß eine einlagige Schicht von Kugeln etwa gleicher Größe auf einen Träger aufgebracht wird und dann diese einla gige Schicht in einen flexiblen Kunststoff eingegossen wird. Anschließend wird dann eine materialabhebende Bearbeitung der beiden Oberflächen vorgenommen, beispielsweise durch Schlei fen, wodurch aus den Kugeln tonnenförmige Teilchen werden.According to a development of the invention, a method for Manufacture of such an insulating body specified in it there is a single layer of balls approximately the same Size is applied to a support and then let it in is poured into a flexible plastic. Then a material-lifting processing of the made on both surfaces, for example by grinding fen, whereby the balls become barrel-shaped particles.
Anhand des in der Figur dargestellten Ausführungsbeispiels wird die Erfindung nachfolgend näher erläutert.Based on the embodiment shown in the figure the invention is explained in more detail below.
Die Figur zeigt im Querschnitt einen Ausschnitt aus einem plattenförmigen Isolierkörper gemäß der Erfindung. Der Iso lierkörper besteht aus einer Scheibe 1 eines flexiblen Werk stoffes, z. B. nach Art eines Weich-PU. Eingebettet in die se Weich-PU-Scheibe oder Platte 1 sind tonnenförmige wärme leitende Teilchen 2, deren Deckflächen 3 in einer Ebene mit den Flächen 4 der Kunststoffscheibe 1 liegen. Die tonnenför migen Teilchen 2 sollen möglichst dicht gepackt in dieser Scheibe eingebettet sein. Sie bestehen aus gut isolierendem Material.The figure shows in cross section a section of a plate-shaped insulating body according to the invention. The Iso lierkörper consists of a disc 1 of a flexible material, z. B. in the manner of a soft PU. Embedded in this soft PU disc or plate 1 are barrel-shaped heat-conducting particles 2 , the top surfaces 3 of which lie in one plane with the surfaces 4 of the plastic disc 1 . The barrel-shaped particles 2 should be embedded in this disk as tightly packed as possible. They are made of a good insulating material.
Ein solcher Isolierkörper ist geeignet, z. B. zwischen den Flansch eines Transisors und die Auflagefläche eines Kühlflügels eingepreßt zu werden. Um einen guten Wärmeübergang zu erzie len, bestehen die tonnenförmigen Teilchen 2 zweckmäßig aus einem keramischen Material, wie Aluminiumoxid, Titanoxid oder Berylliumoxid. Solche keramischen wärmeleitenden Teilchen besitzen weiterhin den Vorteil, daß sie hohe Preßdrucke aus halten.Such an insulating body is suitable, for. B. to be pressed between the flange of a transistor and the bearing surface of a cooling wing. In order to achieve good heat transfer, the barrel-shaped particles 2 are expediently made of a ceramic material, such as aluminum oxide, titanium oxide or beryllium oxide. Such ceramic heat-conducting particles also have the advantage that they can withstand high pressures.
Für gewisse Anwendungen, insbesondere für Anwendungen, bei denen der Isolierkörper auf Biegung beansprucht wird, ist es zweckmäßig, daß die wärmeleitenden Teilchen 2 mit einer dünnen Schicht eines Trennmittels z. B. nach Art von PTFE umgeben sind, wodurch die Reigung zwischen den wärmeleitenden Teilchen 2 und der Einbettungs masse 1 verringert wird. Die wärmeleitfähigen Teilchen sind dann gewissermaßen schwimmend in die Kunststoffschicht ein gebettet.For certain applications, in particular for applications in which the insulating body is subjected to bending, it is expedient for the heat-conducting particles 2 to be coated with a thin layer of a release agent, for. B. are surrounded in the manner of PTFE, whereby the cleaning between the thermally conductive particles 2 and the embedding mass 1 is reduced. The heat-conductive particles are then, as it were, floating in the plastic layer.
Die in etwa tonnenförmige Ausbildung der wärmeleitfähigen Teilchen stellt sicher, daß die flexible Vergußmasse 1 eine in sich selbst tragende Matrix darstellt, die mit genügender Sicherheit eine Halterung der wärmeleitenden Teilchen darstellt. Bei Anwendung des bevorzugten Herstellungsverfahrens, bei dem als wärmeleitende Teilchen Kugeln verwendet werden, die dann abgeschliffen werden, ist es zweckmäßig, so weit abzuschlei fen, daß die Deckflächen der tonnenförmigen wärmeleitenden Teilchen einen Durchmesser aufweisen, der etwa 3/4 bis 4/5 des Kugeldurchmessers beträgt. Zweckmäßig ist auch, die Packung der wärmeleitenden Teilchen so dicht zu machen, daß sich die einzelnen tonnenförmigen Teilchen im Bereich ihres Größendurchmessers möglichst berühren. Die an den Berüh rungspunkten auftretende Reibung wird sehr klein, wenn, be sonders in diesem Fall, die wärmeleitenden Teilchen mit einer dünnen Schicht eines Trennmittels umgeben sind.The roughly barrel-shaped design of the thermally conductive particles ensures that the flexible casting compound 1 represents a self-supporting matrix which, with sufficient certainty, represents a holder for the thermally conductive particles. In the case of application of the preferred manufacturing method in which used as the heat conductive particles balls which are then ground, it is advantageous as far abzuschlei fen that the top surfaces of the barrel-shaped heat-conducting particles have a diameter of about 3/4 bis 4/5 of the Ball diameter is. It is also expedient to make the packing of the heat-conducting particles so tight that the individual barrel-shaped particles touch each other as far as possible in the area of their size diameter. The friction occurring at the contact points becomes very small if, particularly in this case, the heat-conducting particles are surrounded by a thin layer of a release agent.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792951296 DE2951296A1 (en) | 1979-12-20 | 1979-12-20 | Heat transmissive electrical insulator layer - has barrel-shaped conducting sections in sheet with plastics spacers and coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792951296 DE2951296A1 (en) | 1979-12-20 | 1979-12-20 | Heat transmissive electrical insulator layer - has barrel-shaped conducting sections in sheet with plastics spacers and coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2951296A1 DE2951296A1 (en) | 1981-06-25 |
| DE2951296C2 true DE2951296C2 (en) | 1988-10-27 |
Family
ID=6089002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792951296 Granted DE2951296A1 (en) | 1979-12-20 | 1979-12-20 | Heat transmissive electrical insulator layer - has barrel-shaped conducting sections in sheet with plastics spacers and coating |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2951296A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4782893A (en) * | 1986-09-15 | 1988-11-08 | Trique Concepts, Inc. | Electrically insulating thermally conductive pad for mounting electronic components |
| SE0004125L (en) * | 2000-11-10 | 2002-05-11 | Ericsson Telefon Ab L M | Spacer holding dielectric layer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1281582C2 (en) * | 1964-08-27 | 1975-02-20 | Robert Bosch Gmbh, 7000 Stuttgart | ARRANGEMENT OF A SEMI-CONDUCTIVE COMPONENT STORED IN AN ELECTRICALLY CONDUCTIVE CAPSULE ON A COMPONENT USED FOR ITS SUPPORT AND HEAT DISCHARGE |
| US3391242A (en) * | 1966-12-27 | 1968-07-02 | Admiral Corp | Transistor insulator with self-contained silicone grease supply |
-
1979
- 1979-12-20 DE DE19792951296 patent/DE2951296A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2951296A1 (en) | 1981-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8120 | Willingness to grant licenses paragraph 23 | ||
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: AEG ELEKTRONISCHE ROEHREN GMBH, 89077 ULM, DE |
|
| 8339 | Ceased/non-payment of the annual fee |