DE102005016559A1 - Image sensor die includes substrate, image sensor array, micro lens, and protection layer formed on the micro lens - Google Patents
Image sensor die includes substrate, image sensor array, micro lens, and protection layer formed on the micro lens Download PDFInfo
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- DE102005016559A1 DE102005016559A1 DE102005016559A DE102005016559A DE102005016559A1 DE 102005016559 A1 DE102005016559 A1 DE 102005016559A1 DE 102005016559 A DE102005016559 A DE 102005016559A DE 102005016559 A DE102005016559 A DE 102005016559A DE 102005016559 A1 DE102005016559 A1 DE 102005016559A1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/148—Charge coupled imagers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14643—Photodiode arrays; MOS imagers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/1462—Coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14627—Microlenses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
- H01L31/02327—Optical elements or arrangements associated with the device the optical elements being integrated or being directly associated to the device, e.g. back reflectors
-
- 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
- H01L2924/095—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00 with a principal constituent of the material being a combination of two or more materials provided in the groups H01L2924/013 - H01L2924/0715
- H01L2924/097—Glass-ceramics, e.g. devitrified glass
- H01L2924/09701—Low temperature co-fired ceramic [LTCC]
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Facsimile Heads (AREA)
Abstract
Description
Die vorliegende Erfindung stellt eine mit einer parallel anhängigen Anmeldung mit der Anmeldenummer US-10/833,345, die von demselben Rechtsnachfolger wie bei der vorliegenden Anmeldung am 28. April 2004 eingereicht wurde und den Titel „Structure of image sensor modul and a method for manufacturing of wafer level package" hat, verwandte Anmeldung dar. Genannte Anmeldung wird hierin durch Bezugnahme vollumfänglich aufgenommen.The The present invention provides a copending application with the application number US-10 / 833,345 filed by the same assignee as filed in the present application on April 28, 2004 and was titled "Structure of image sensor module and method for manufacturing of wafer level package "has, related This application is incorporated herein by reference in its entirety.
Die vorliegende Erfindung betrifft einen Bildsensor und genauer gesagt eine Bildsensorstruktur ohne Partikelkontamination auf Mikrolinsen und ein Verfahren zur Herstellung desselben.The The present invention relates to an image sensor, and more particularly an image sensor structure without particle contamination on microlenses and a method for producing the same.
Die Halbleitertechnologien entwickeln sich sehr schnell und speziell Halbleiterchips weisen einen Trend in Richtung auf Miniaturisierung auf. Die Anforderungen an die Funktionen der Halbleiterchips weisen jedoch einen Trend in Richtung Vielseitigkeit auf. Genauer gesagt müssen die Halbleiterchips mehr Eingabe/Ausgabe-Kontaktstellen auf einer kleineren Fläche aufweisen, so daß die Dichte der Pins schnell angehoben wird. Dies bewirkt, daß das Verpacken des Halbleiterchips schwieriger wird und die Ausbeute abnimmt. Der Hauptzweck der Verpackungsstruktur besteht darin, die Chips vor Beschädigungen von außen zu schützen. Außerdem muß die von den Chips erzeugte Wärme über die Verpackungsstruktur effizient abgeleitet werden, um den Betrieb der Chips sicherzustellen. Die meisten Verpackungstechnologien unterteilen Chips auf einem Wafer in jeweilige Chips und verpacken und testen danach den jeweiligen Chip. Eine andere Verpackungstechnologie, die „Wafer Level Package (WLP)" genannt wird, kann die Chips auf einem Wafer vor Unterteilen der Chips in jeweilige Chips verpacken. Die WLP-Technologie weist gewisse Vorteile, wie zum Beispiel eine kürzere Herstelldurchlaufzeit, geringere Kosten und keine Notwendigkeit zum Unterfüllen oder Formen auf.The Semiconductor technologies are developing very fast and specifically Semiconductor chips are showing a trend towards miniaturization on. The demands on the functions of the semiconductor chips have however, there is a trend towards versatility. More precisely have to the semiconductor chips have more input / output pads on one smaller area have, so that the Density of the pins is raised quickly. This causes the packaging of the semiconductor chip becomes more difficult and the yield decreases. Of the The main purpose of the packaging structure is to advance the chips damage from the outside to protect. Furthermore must the heat generated by the chips over the Packaging structure can be efficiently derived to the operation to ensure the chips. Divide most packaging technologies Chips on a wafer into respective chips and pack and test afterwards the respective chip. Another packaging technology, the "wafer Level Package (WLP) "called can, the chips on a wafer before dividing the chips in Pack respective chips. The WLP technology has certain advantages, such as for example, a shorter one Lead time, lower cost and no need for underfilling or forms on.
Die digitale Bildtechnik ist bei Bildaufnahmegeräten, wie zum Beispiel Digitalkameras, Bildscannern etc. in großem Maße eingesetzt worden. Der herkömmliche CMOS-Sensor ist auf einer Leiterplatte angeordnet. Der CMOS-Sensor weist einen darin befestigten Chip auf. Die Linsenaufnahme weist eine Fokussierlinse zum Fokussieren des Bildes auf dem Chip des CMOS-Sensors auf. Durch die Linse wird das Bildsignal vom Chip zu einem digitalen Prozessor zur Umwandlung des analogen Signals in ein digitales Signal geschickt. Der Chip des CMOS-Sensors ist für Infrarotstrahlung und Staubteilchen relativ empfindlich. Wenn die nicht gewollten Partikeln nicht vom Sensor entfernt werden, führt dies zur Verschlechterung der Qualität des Bausteins. Das Entfernen von Hand zum Erreichen dieses Zwecks kann den empfindlichen Chip beschädigen. Typischerweise ist das Bildsensormodul durch Verwendung eines COB- oder LCC-Verfahrens gebildet. Ein Nachteil des COB besteht in der niedrigeren Ausbeute während des Verpackungsprozesses aufgrund von Partikelkontamination auf dem Meßgebiet. Daneben sind Nachteile des LCC die höheren Verpackungskosten und die geringere Ausbeute aufgrund von Partikelkontamination auf dem Meßgebiet.The digital imaging technology is used in image capture devices, such as digital cameras, Image scanners etc. in large Dimensions used Service. The conventional one CMOS sensor is arranged on a printed circuit board. The CMOS sensor has a chip mounted therein. The lens holder has a focusing lens for focusing the image on the chip of the CMOS sensor on. Through the lens, the image signal from the chip to a digital processor for converting the analog signal into sent a digital signal. The chip of the CMOS sensor is for infrared radiation and dust particles are relatively sensitive. If not wanted Particles are not removed from the sensor, this leads to deterioration the quality of the building block. Removing by hand to achieve this purpose can damage the sensitive chip. Typically that is Image sensor module using a COB or LCC method educated. A disadvantage of COB is the lower yield while of the packaging process due to particle contamination the measuring area. Besides disadvantages of the LCC are the higher packing costs and the lower yield due to particle contamination on the Measurement area.
Außerdem sind Mikrolinsen optische Komponenten auf Halbleitern, die als Festkörper-Abbildungseinrichtungen verwendet werden. Eine der wichtigsten Erwägungen bei der Gestaltung und Herstellung von Mikrolinsen stellt die Lichtempfindlichkeit dar. Ein Grund dafür, daß die Lichtempfindlichkeit der Mikrolinse vermindert sein kann, besteht darin, daß die Fläche jeder Mikrolinse unter einen optimalen Wert herabgesetzt worden ist. Außerdem entwickelt die Firma SHELL CASE auch eine Wafer-Level-Package-Technik, wobei der von SHELL CASE verpackte Bildsensorchip dadurch teurer ist, daß er zwei Glasplatten und einen komplizierten Prozeß verlangt. Zusätzlich ist die Durchlässigkeit aufgrund des Auslaufens von Epoxid schlecht und kann die mögliche Zuverlässigkeit verringert werden. Das US-Patent Nr. 5,514,888 für „On-chip Screen Type Solid State Image Sensor and Manufacturing Method thereof" von Yoshikazu Sano et al., erteilt am 7. Mai 1996, lehrt ein Verfahren zur Ausbildung von Charge-Coupled Devices (CCDS) auf einem Siliziumsubstrat. Eine Mikrolinsen-Anordnung ist über der CCD-Anordnung unter Verwendung von herkömmlicher Lithographie und Aufschmelztechniken ausgebildet.Besides, they are Microlenses optical components on semiconductors used as solid-state imaging devices be used. One of the most important considerations in the design and Production of microlenses represents photosensitivity. One reason that the Photosensitivity of the microlens can be reduced exists in that the area each microlens has been reduced below an optimal value is. Furthermore SHELL CASE also develops a wafer-level package technology, whereby the image sensor chip packaged by SHELL CASE thereby becomes more expensive is that he has two Glass plates and a complicated process required. In addition is the permeability due to the leakage of epoxy bad and can the possible reliability be reduced. U.S. Patent No. 5,514,888 to "On-chip Screen Type Solid State Image Sensor and Manufacturing Method thereof "by Yoshikazu Sano et al., issued May 7, 1996, teaches a method of training of charge-coupled devices (CCDS) on a silicon substrate. A Microlens arrangement is over the CCD array using conventional lithography and reflow techniques educated.
Der Erfindung liegt somit die Aufgabe zugrunde, eine Bildsensorchipstruktur ohne Partikelkontamination auf Mikrolinsen und ein Verfahren zur Herstellung derselben bereitzustellen.Of the The invention is therefore based on the object, an image sensor chip structure without particle contamination on microlenses and a method of manufacture to provide the same.
Erfindungsgemäß wird diese Aufgabe gelöst durch einen Bildsensorchip, umfassend ein Substrat, eine auf genanntem Substrat ausgebildete Bildsensoranordnung, auf genannter Bildsensoranordnung angeordnete Mikrolinsen und eine Schutzschicht, die auf genannten Mikrolinsen ausgebildet ist, um genannte Mikrolinsen vor Partikelkontamination zu schützen.According to the invention this Task solved by an image sensor chip comprising a substrate, one on said Substrate formed image sensor array, arranged on said image sensor array Microlenses and a protective layer on top of said microlenses is formed to said microlenses from particle contamination to protect.
Gemäß einer besonderen Ausführungsform der Erfindung kann vorgesehen sein, daß genannte Schutzschicht PMMA (Polymethylmethacrylat) enthält.According to one particular embodiment of the The invention can be provided that said protective layer PMMA (Polymethylmethacrylate).
Günstigerweise ist genannte Schutzschicht mittels eines SOG (Spin on Glass)-Verfahrens hergestellt.conveniently, is said protective layer by means of a SOG (spin on glass) method produced.
Auch kann vorgesehen sein, daß genannte Schutzschicht Polycarbonat enthält.Also it can be provided that said protective layer Contains polycarbonate.
Alternativ kann vorgesehen sein, daß genannte Schutzschicht Fluoropolymer enthält.alternative it can be provided that said Protective layer contains fluoropolymer.
Ebenfalls ist denkbar, daß genannte Schutzschicht SiO2 enthält.It is also conceivable that said protective layer contains SiO 2 .
Wiederum alternativ kann vorgesehen sein, daß genannte Schutzschicht Al2O3 enthält.Again alternatively it can be provided that said protective layer contains Al 2 O 3 .
Günstigerweise enthält genannte Bildsensoranordnung CMOS.conveniently, contains called image sensor array CMOS.
Alternativ kann vorgesehen sein, daß genannte Bildsensoranordnung CCD enthält.alternative it can be provided that said Image sensor array includes CCD.
In einer weiteren besonderen Ausführungsform umfaßt der Bildsensorchip außerdem eine auf genannter Schutzschicht ausgebildete Filterschicht.In another particular embodiment comprises the image sensor chip as well a filter layer formed on said protective layer.
Insbesondere kann dabei vorgesehen sein, daß genannte Filterschicht ein IR-filternder Film ist.Especially may be provided that said Filter layer is an IR-filtering film.
Eine weitere besondere Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß sie außerdem einen auf genannter Bildsensoranordnung ausgebildeten Farbfilter umfaßt.A another particular embodiment of the Invention is characterized in that it also has an on Image sensor array trained color filter comprises.
Zweckmäßigerweise enthält das Material von genanntem Substrat Glas.Conveniently, contains the material of named substrate glass.
Auch kann vorgesehen sein, daß das Material von genanntem Substrat Halbleitermaterial enthält.Also can be provided that the Material of said substrate contains semiconductor material.
Alternativ kann vorgesehen sein, daß das Material von genanntem Substrat Keramik enthält.alternative can be provided that the material of said substrate contains ceramic.
Wiederum alternativ kann vorgesehen, daß das Material von genanntem Substrat Harz enthält.In turn Alternatively it can be provided that the Material from named substrate contains resin.
Günstigerweise ist die Dicke von genannter Schutzschicht im wesentlichen geringer als 0,5 μm.conveniently, the thickness of said protective layer is substantially lower than 0.5 μm.
Zweckmäßigerweise ist genannte Schutzschicht eine wasserabweisende Schicht.Conveniently, said protective layer is a water-repellent layer.
Alternativ kann vorgesehen sein, daß genannte Schutzschicht eine ölabweisende Schicht ist.alternative it can be provided that said Protective layer an oil repellent Layer is.
Schließlich ist genannte Schutzschicht zweckmäßigerweise eine Schicht mit einem niedrigen Brechungsindex.Finally is said protective layer expediently a layer with a low refractive index.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung, in der mehrere Ausführungsbeispiele anhand der schematischen Zeichnungen im einzelnen erläutert sind. Dabei zeigt:Further Features and advantages of the invention will be apparent from the claims and the following description, in which several embodiments are explained in detail with reference to the schematic drawings. Showing:
Die Komponenten der verschiedenen Elemente sind nicht maßstabsgerecht gezeigt. Einige Abmessungen der verwandten Komponenten sind übertrieben dargestellt und Abschnitte ohne Bedeutung sind nicht gezeichnet, um für klarere Beschreibung und ein besseres Verständnis der vorliegenden Erfindung zu sorgen.The Components of the various elements are not to scale shown. Some dimensions of the related components are exaggerated represented and sections without meaning are not drawn, around for clearer description and a better understanding of the present invention to care.
In
Die
zweite dielektrische Schicht
Die
leitfähige
Kontaktschicht
Die
Chips
Darüber hinaus
ist eine weitere Wafer-Level-Package-Struktur vorgesehen, die in
Die
leitfähige
Kontaktschicht
Darüber hinaus
ist die dritte dielektrische Schicht
Die
leitfähige
Kontaktschicht
Die
Metalllötkugeln
Die
Chips
Unter
Bezugnahme auf
Die
vorliegende Erfindung liefert einen Bildsensorbaustein, wie er in
Eine
Isolierschicht (nicht gezeigt) ist über dem Substrat
Die in der vorstehenden Beschreibung, in den Zeichnungen sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebigen Kombinationen für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.The in the above description, in the drawings and in the claims disclosed features of the invention can both individually and also in any combination for the realization of the invention in its various embodiments be essential.
- 100100
- Substratsubstratum
- 102102
- Meßgebietmeasurement area
- 110110
- Isolierschichtinsulating
- 120120
- FarbfilterschichtColor filter layer
- 120R,120R,
- 120G,120G,
- 120B120B
- SubpixelgebieteSubpixelgebiete
- 130130
- Schichtlayer
- 140140
- MikrolinsenanordnungMicrolens array
- 150150
- Schutzschichtprotective layer
- 160160
- Filterschichtfilter layer
- 200200
- isolierende Basisinsulating Base
- 201,202201,202
- BildsensorchipsImage sensor chips
- 203203
- Klebematerialadhesive material
- 204204
- MetallkontaktstellenMetal contact points
- 205205
- erste dielektrische Schichtfirst dielectric layer
- 206206
- leitfähige Kontaktschichtconductive contact layer
- 207207
- zweite dielektrische Schichtsecond dielectric layer
- 208208
- Lötkugelnsolder balls
- 209209
- Isolierschichtinsulating
- 210210
- MetallkontaktstellenMetal contact points
- 300300
- isolierende Basisinsulating Base
- 301,302301.302
- BildsensoranordnungenImage sensor arrays
- 303303
- erste dielektrische Schichtfirst dielectric layer
- 304304
- zweite dielektrische Schichtsecond dielectric layer
- 305a, 305b305a, 305b
- leitfähige Kontaktschichtenconductive contact layers
- 306306
- Isolierschichtinsulating
- 307307
- Lötkugelnsolder balls
- 308308
- MetallkontaktstellenMetal contact points
- 309309
- MetallkontaktstellenMetal contact points
- 310a310a
- Klebematerialadhesive material
- 310310
- Klebematerialadhesive material
- 311311
- dritte dielektrische Schichtthird dielectric layer
- 312312
- DurchgangslochThrough Hole
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/025,746 | 2004-12-29 | ||
US11/025,746 US7525139B2 (en) | 2004-04-28 | 2004-12-29 | Image sensor with a protection layer |
Publications (1)
Publication Number | Publication Date |
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DE102005016559A1 true DE102005016559A1 (en) | 2006-07-20 |
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Application Number | Title | Priority Date | Filing Date |
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DE102005016559A Withdrawn DE102005016559A1 (en) | 2004-12-29 | 2005-04-08 | Image sensor die includes substrate, image sensor array, micro lens, and protection layer formed on the micro lens |
Country Status (6)
Country | Link |
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JP (1) | JP2006190944A (en) |
KR (1) | KR100725317B1 (en) |
CN (1) | CN1797777A (en) |
DE (1) | DE102005016559A1 (en) |
SG (1) | SG123648A1 (en) |
TW (1) | TWI251931B (en) |
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Publication number | Publication date |
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KR100725317B1 (en) | 2007-06-07 |
TW200623402A (en) | 2006-07-01 |
JP2006190944A (en) | 2006-07-20 |
TWI251931B (en) | 2006-03-21 |
SG123648A1 (en) | 2006-07-26 |
KR20060076141A (en) | 2006-07-04 |
CN1797777A (en) | 2006-07-05 |
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