DE102006040658A1 - Micromechanical sensor arrangement, has substrate with thickness of less than hundred pico meters and connected with another substrate in elongation firm manner by hard connecting layer in particular sealing glass or metal solder layers - Google Patents
Micromechanical sensor arrangement, has substrate with thickness of less than hundred pico meters and connected with another substrate in elongation firm manner by hard connecting layer in particular sealing glass or metal solder layers Download PDFInfo
- Publication number
- DE102006040658A1 DE102006040658A1 DE102006040658A DE102006040658A DE102006040658A1 DE 102006040658 A1 DE102006040658 A1 DE 102006040658A1 DE 102006040658 A DE102006040658 A DE 102006040658A DE 102006040658 A DE102006040658 A DE 102006040658A DE 102006040658 A1 DE102006040658 A1 DE 102006040658A1
- Authority
- DE
- Germany
- Prior art keywords
- substrate
- sensor arrangement
- sensor
- thickness
- housing
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B7/00—Microstructural systems; Auxiliary parts of microstructural devices or systems
- B81B7/0032—Packages or encapsulation
- B81B7/0045—Packages or encapsulation for reducing stress inside of the package structure
- B81B7/0048—Packages or encapsulation for reducing stress inside of the package structure between the MEMS die and the substrate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/141—Monolithic housings, e.g. molded or one-piece housings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/147—Details about the mounting of the sensor to support or covering means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation
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- 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
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- 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
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
-
- 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
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/4912—Layout
- H01L2224/49171—Fan-out arrangements
-
- 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
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
Abstract
Description
Stand der TechnikState of the art
Die
Erfindung geht aus von einer mikromechanischen Sensoranordnung nach
der Gattung des Hauptanspruchs. Aus der deutschen Offenlegungsschrift
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße mikromechanische Sensoranordnung mit einem ersten Substrat und mit einer in dem ersten Substrat vorgesehenen Membranstruktur bzw. das erfindungsgemäße Verfahren zur Herstellung einer Sensoranordnung mit den Merkmalen der nebengeordneten Ansprüche hat demgegenüber den Vorteil, dass der aktive Sensorbereich der Sensoranordnung erheblich geringere Drifterscheinungen über seine Lebensdauer aufweist. Hierzu ist bei der erfindungsgemäßen mikromechanischen Sensoranordnung das erste Substrat zum einen vergleichsweise dünn ausgebildet, nämlich mit einer Dicke von bevorzugt weniger als 100 μm ausgebildet, und es ist das erste Substrat ferner dehnungsfest bzw. hart koppelnd mit einem zweiten Substrat verbunden. Unter einer dehnungsfesten oder hart koppelnden Verbindung des ersten Substrats mit dem zweiten Substrat wird im Rahmen der vorliegenden Erfindung verstanden, dass der keine stressentkoppelnde Verbindungsschicht Verwendung findet, sondern dass eine harte Verbindung verwendet wird, die die (aufgrund der vergleichsweise geringen Dicke des ersten Substrats) kleineren thermomechanischen Spannungskräfte im wesentlichen vollständig aufnimmt und über die Lebensdauer der erfindungsgemäßen Sensoranordnung keine wesentliche plastische Verformung aufweist. Das erste Substrat nimmt daher die thermisch induzierte Ausdehnung des zweiten Substrats an, ohne dass auf die Verbindungsstelle größere Kräfte ausgeübt werden. Hierfür wird erfindungsgemäß die dehnungsfeste, d.h. härtere Materialien für diese Verbindung verwendet, die sich im Betrieb über die Temperatur nicht plastisch verformen und so keine Driften oder Hystereseerscheinungen im Ausgangssignal hervorrufen. Vorteilhafterweise ist daher das erste Substrat über eine harte Verbindungsschicht, insbesondere eine Sealglasschicht oder eine Hartmetalllotschicht, mit dem zweiten Substrat verbunden.The Micromechanical sensor arrangement according to the invention with a first substrate and with one provided in the first substrate Membrane structure or the inventive method for the preparation a sensor arrangement with the features of the independent claims has the other hand Advantage that the active sensor area of the sensor arrangement considerably lower drift phenomena over has its life. For this purpose, in the micromechanical invention Sensor arrangement, the first substrate for a comparatively thin formed, namely formed with a thickness of preferably less than 100 microns, and it is that first substrate further stretch-proof or hard coupling with a connected to the second substrate. Under a stretch-resistant or hard coupling the first substrate to the second substrate is understood in the context of the present invention that the no stress decoupling Connection layer finds use, but that a hard connection is used, which (due to the comparatively small thickness the first substrate) substantially completely absorbs smaller thermo-mechanical stress forces and over the life of the sensor arrangement according to the invention is not essential having plastic deformation. The first substrate therefore takes the thermally induced expansion of the second substrate without greater forces are exerted on the junction. For this purpose, according to the invention, the stretch-resistant, i. tougher Materials for used this compound, which is not plastic in operation over the temperature deform and so no drifts or hysteresis in the output signal cause. Advantageously, therefore, the first substrate via a hard bonding layer, in particular a seal glass layer or a cemented carbide solder layer bonded to the second substrate.
Ferner ist es erfindungsgemäß vorgesehen, dass das zweite Substrat eine Leadframestruktur ist. Hierdurch können in einfacherer Weise herkömmliche Aufbau- und Verbindungstechniken zur Herstellung von mikromechanischen Sensoranordnungen vorteilhaft verwendet werden, insbesondere solche, die einen Zweichipaufbau aufweisen. Hierdurch kann eine solche Sensoranordnung besonders kostengünstig realisiert werden.Further It is inventively provided that the second substrate is a lead frame structure. This can be done in easier way conventional Construction and connection techniques advantageous for the production of micromechanical sensor arrangements be used, in particular those which have a Zweichipaufbau exhibit. As a result, such a sensor arrangement is particularly economical will be realized.
Bevorzugt ist ferner, dass das zweite Substrat ein eine Auswerteschaltung aufweisendes Substratmaterial ist bzw. dass das die Auswerteschaltung aufweisende Substratmaterial über eine weitere harte Verbindungsschicht mit einer Leadframestruktur verbunden ist. Hierdurch wird eine sogenannte Stapelmontage (Stackmontage) realisiert, wobei das (abgedünnte) erste Substrat mit der Membranstruktur durch Hartkleben oder Aufglasen auf das zweite Substrat aufgebracht wird, welches insbesondere eine Siliziumsubstrat mit einer Auswerteschaltung ist. Das zweite Substrat übernimmt dann vorteilhafterweise die Rolle eines stressentkoppelnden Pyrexglases gegenüber plastischen Verformungen des Gehäuses bzw. des Klebers/der Verbindungsschicht zwischen dem zweiten Substrat und dem Gehäuseboden.Prefers is further that the second substrate is an evaluation circuit having substrate material or that the evaluation circuit having Substrate material over another hard connection layer connected to a lead frame structure is. As a result, a so-called stack mounting (stack mounting) realized, whereby the (thinned) first substrate with the membrane structure by hard bonding or Aufglasen is applied to the second substrate, which in particular a Silicon substrate with an evaluation circuit is. The second substrate takes over then advantageously the role of a stress-decoupling Pyrex glass across from plastic deformation of the housing or the adhesive / bonding layer between the second substrate and the caseback.
Weiterhin ist bevorzugt, dass das erste Substrat mittels einer Bonddrahtverbindung elektrisch mit dem zweiten Substrat verbunden ist. Hierdurch können kostengünstige Verbindungstechniken bei der erfindungsgemäßen Sensoranordnung Verwendung finden.Farther it is preferred that the first substrate by means of a bonding wire connection is electrically connected to the second substrate. This can be cost-effective connection techniques in the sensor arrangement according to the invention Find use.
Bevorzugt ist ferner, dass die Sensoranordnung eine im Bereich der Membranstruktur vorgesehene Passivierung aufweist bzw. dass die Passivierung der Membranstruktur mittels eines Gels erfolgt. Hierdurch kann die Membranstruktur in vorteilhafter Weise durch die Passivierung bzw. durch das Gel vor Umwelteinflüssen bzw. dem Medium geschützt werden.Prefers is further that the sensor arrangement in the region of the membrane structure Has provided passivation or that the passivation of the Membrane structure is carried out by means of a gel. This allows the membrane structure advantageously by the passivation or by the gel before environmental influences or the medium protected become.
Weiterhin ist ebenfalls bevorzugt, dass das Gehäuse als ein Moldgehäuse oder als ein Premoldgehäuse vorgesehen ist. Es ist hierdurch erfindungsgemäß vorteilhaft möglich, ein besonders kostengünstiger Gesamtaufbau der Sensoranordnung zu schaffen.Farther is also preferred that the housing as a mold housing or as a premold housing is provided. It is therefore possible according to the invention advantageously, a especially cheaper To create a total structure of the sensor arrangement.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung einer erfindungsgemäßen Sensoranordnung, wobei insbesondere das erste Substrat vor der Verbindung mit dem zweiten Substrat auf eine Dicke von weniger als 100 μm abgedünnt wird. Hierdurch wird vorteilhaft erreicht, dass zum einen die Dauerbetriebseigenschaften beim Vorhandensein von thermisch induzierten Materialspannungen verbessert werden und es ist hierdurch ferner möglich – insbesondere für den Fall einer Stapelanordnung des ersten Substrats auf dem zweiten Substrat – einen vergleichsweise kompakten und in seiner Höhe kleinen Gesamtaufbau der Sensoranordnung zu erzielen.One Another object of the present invention is a method for producing a sensor arrangement according to the invention, wherein in particular the first substrate before the connection with the second Substrate is thinned to a thickness of less than 100 microns. This will be advantageous achieved, on the one hand, the continuous operating characteristics in the presence be improved by thermally induced material stresses and It is also possible in this way - in particular for the Case of a stack arrangement of the first substrate on the second Substrate - one comparatively compact and low in height overall construction of the To achieve sensor arrangement.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.embodiments The invention are illustrated in the drawing and in the following description explained in more detail.
Kurze Beschreibung der ZeichnungShort description of the drawing
Es zeigenIt demonstrate
In
In
Dadurch,
dass die Bauhöhe,
d.h. die Dicke, des Sensorchips
In
der
Gemäß der zweiten
Ausführungsform
ist der Aufbau der Sensoranordnung
In
In
den
Dadurch
ist es nicht zwingend erforderlich, dass der Sensorchip
Für alle Ausführungsform
der Sensoranordnung
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006040658A DE102006040658A1 (en) | 2006-08-30 | 2006-08-30 | Micromechanical sensor arrangement, has substrate with thickness of less than hundred pico meters and connected with another substrate in elongation firm manner by hard connecting layer in particular sealing glass or metal solder layers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006040658A DE102006040658A1 (en) | 2006-08-30 | 2006-08-30 | Micromechanical sensor arrangement, has substrate with thickness of less than hundred pico meters and connected with another substrate in elongation firm manner by hard connecting layer in particular sealing glass or metal solder layers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006040658A1 true DE102006040658A1 (en) | 2008-03-13 |
Family
ID=39046980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006040658A Ceased DE102006040658A1 (en) | 2006-08-30 | 2006-08-30 | Micromechanical sensor arrangement, has substrate with thickness of less than hundred pico meters and connected with another substrate in elongation firm manner by hard connecting layer in particular sealing glass or metal solder layers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006040658A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016205793A1 (en) * | 2016-04-07 | 2017-03-02 | Robert Bosch Gmbh | Micromechanical system |
FR3068467A1 (en) * | 2017-06-28 | 2019-01-04 | Sc2N | SIMPLIFIED PRESSURE SENSOR |
WO2020108999A1 (en) * | 2018-11-29 | 2020-06-04 | Robert Bosch Gmbh | Tank device for storing compressed fluids, comprising a sensor module arrangement |
-
2006
- 2006-08-30 DE DE102006040658A patent/DE102006040658A1/en not_active Ceased
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016205793A1 (en) * | 2016-04-07 | 2017-03-02 | Robert Bosch Gmbh | Micromechanical system |
FR3068467A1 (en) * | 2017-06-28 | 2019-01-04 | Sc2N | SIMPLIFIED PRESSURE SENSOR |
WO2020108999A1 (en) * | 2018-11-29 | 2020-06-04 | Robert Bosch Gmbh | Tank device for storing compressed fluids, comprising a sensor module arrangement |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20130515 |
|
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |