WO2003081634A2 - Rohrmagnetron - Google Patents
Rohrmagnetron Download PDFInfo
- Publication number
- WO2003081634A2 WO2003081634A2 PCT/DE2003/000962 DE0300962W WO03081634A2 WO 2003081634 A2 WO2003081634 A2 WO 2003081634A2 DE 0300962 W DE0300962 W DE 0300962W WO 03081634 A2 WO03081634 A2 WO 03081634A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- target
- tube
- magnetic field
- plates
- polygon
- 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
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3402—Gas-filled discharge tubes operating with cathodic sputtering using supplementary magnetic fields
- H01J37/3405—Magnetron sputtering
Definitions
- the invention relates to a tubular magnetron of a vacuum coating system, which is provided with a hollow, rotatably mounted tubular target arrangement and with a magnet system.
- the magnet system has two magnetic field maxima in cross section and is arranged in the axial longitudinal extent of the tube target arrangement and in the interior thereof, the magnetic field penetrating the tube target arrangement.
- the tube target arrangement has elongated target plates which are attached to a target carrier.
- the magnetic field maximum specified here and below is the maximum of the tangentially oriented magnetic field component on the target surface.
- Tubular magnetrons of a general type have long been known for use in vacuum coating systems for coating various large-area substrates with different layer materials. They are characterized by a high utilization rate of the target material and a long target life.
- a tubular magnetron is described in German patent specification DD 217964 A3. Uniform erosion of the sputtering material on the surface of the tube target is achieved by uniform rotation of the tube target.
- the tube target consists entirely of the material to be sputtered, such as aluminum or titanium.
- the target cooling in the interior of the tube target is much more effective than with flat targets due to the more favorable heat transfer in the tube, which increases the performance in relation to the coating. rate compared to the flat targets.
- solid tube targets made of copper and titanium are also known.
- tube targets consist of a carrier tube and a layer of the sputtering material applied all round. This layer consists primarily of metallic sputtering material and is mainly applied by plasma spraying.
- No. 4,443,318 describes the most obvious prior art, in which a rotating magnetron is equipped with a tube target which has a large number of individual target strips with the applied sputter material, attached to a carrier tube.
- the target strips are located in individual grooves of the support tube and are pressed against the support tube by clamping strips (claws) that are screwed onto the support tube.
- This design allows the use of target materials produced in plate form on the surface of tubular targets.
- ceramic sputtering material to the surface of a tube target is difficult in the plasma spraying process, since it does not achieve the required material density and material homogeneity of the ceramic material connections. Minor structural and alloy deviations with certain ceramic sputter layers, such as with ITO (indium Tin oxide alloy) or silicon oxide lead to process irregularities. Similarly, solid material tube targets made of ceramic sputter material with the required properties are not known in the current state of the art.
- the ceramic material sintered in the high-pressure pressing process has a high block density and hardness, which means that this material cannot be processed arbitrarily.
- the plate shape is therefore a preferred manufacturing form for ceramic sputtering materials.
- the object on which the invention is based is that when using target plates on tubular targets, in particular target plates made of ceramics, for example made of ITO, zinc oxide, silicon and other ceramic, ceramic-like and / or high-melting material, improved process uniformity is an essential prerequisite for high layer quality the substrate is to be achieved.
- the coating quality when using the tube targets with target plates should be matched to the coating quality when using tube targets with applied sputter material or consisting of solid material in order to be more variable and To enable cost-effective coating processes when using tube targets with the same quality.
- the target plates are arranged adjacent to one another in cross section, forming a polygon. This prevents surface areas from appearing as inhomogeneous sections on the tube targets without target material. This significantly reduces the sudden fluctuations in the magnetic field strength and the sputtering rate, which are generated by the alternating traversing of the target plate surfaces and the interstices free of sputtering material by the magnetic fields of the magnet system.
- the width and number of the target plates is chosen such that an angle, which is enclosed by two imaginary radial lines running through a corner of two adjacent corners of the polygon, becomes an angle ⁇ , that of two through the magnetic field maxi - Including the imaginary radial lines, is related to
- the distance of each corner of the polygon from the central longitudinal line of a target plate is approximately equal to the distance of the magnetic field maxima in the area of the target plate surface.
- a corner creates a comparatively low sputter rate in the magnetic field maximum and a center of the area - because of its greater proximity to the magnet system - a comparatively high sputter rate. Due to the configuration, a corner passes through one magnetic field maximum, while a center of the surface passes through the other magnetic field maximum. This results in a high sputter rate paired with a low sputter rate, in total an average sputter rate. other sections behave in the same way the polygon to each other. This compensates for peaks in the sputtering rates in total and further reduces the fluctuations in the sputtering rate, which are generated by the polygonal tube target surface, despite the full-surface arrangement of the target plates.
- This swelling and swelling of the sputter rate when passing through the magnetic fields is preferably, preferably by the repetitive positioning of a" polygon tip "and a" polygon sink "simultaneously in areas of the magnetic field at its two maxima, depending on the distance between the magnetic field maxima and the relative width of the target plates, the longitudinal edge of the plate forming the polygon tips and the central longitudinal line forming the polygon sinks ger target plates can be combined. This arrangement achieves the effect of damping the vibration behavior of the sputter rate and thus process uniformity of a new quality.
- the target plates are glued or bonded onto the target carrier. This technology facilitates the adjacent arrangement of the target plates on the support tube and avoids fastening aids that lead to inhomogeneous surface design of the tube target.
- the target plates consist of ceramics e.g. from ITO, zinc oxide, silicon and from other ceramic, ceramic-like and / or refractory material, which are difficult to apply to a tube target by other methods.
- the tube target can be rotated at a speed of 1 s "1 to 2 min " 1 . This means that the speed of the tube target can be optimally aligned to target plates of different widths.
- one use of the invention provides that minimal fluctuations in the plasma or the sputter rate are compensated for by regulating the voltage or by regulating the plasma emission monitor.
- the effective compensation of the sputter rate fluctuation by the target plate arrangement according to the invention is further perfected by this regulation.
- the invention will be explained in more detail below using an exemplary embodiment.
- the accompanying drawing shows a cross section through a tube target with the brought target plates and an internal magnet system.
- the magnetron is equipped here with a rotating tube target 1, which consists of a tubular target carrier 2, on which a large number of individual elongate plane target plates 3 with applied sputtering material, such as e.g. ITO, zinc oxide, silicon and other ceramic, ceramic-like and / or high-melting material, are glued or bonded adjacent to each other.
- a rotating tube target 1 which consists of a tubular target carrier 2, on which a large number of individual elongate plane target plates 3 with applied sputtering material, such as e.g. ITO, zinc oxide, silicon and other ceramic, ceramic-like and / or high-melting material, are glued or bonded adjacent to each other.
- the tangential support of the flat target plates 3 on the tubular target carrier 2 forms a complete but polygonal target surface with polygon corners 4 and polygon sinks 6 on the tube target 1.
- the plate longitudinal edges 8 of the target plates 3 geometrically form the polygon corners 4 and the central longitudinal axis 9 of the target plates 3 geometrically consider the polygon sinks 6 of the target surface.
- the fixed magnet system 10 In the interior of the tube target 1 is the fixed magnet system 10, which generates a magnetic field with two magnetic field maxima 11 which penetrate the tube target 1 at a distance 12 which is dependent on the design of the magnet system 10.
- the maximum possible sputter rate is in the core zones of the magnetic field, i.e. H. Reached approximately in the area of the two magnetic field maxima 11, outside of which the sputter rate decreases.
- the distance between each longitudinal edge 8 of the target plates 3 and the central longitudinal axis 9 of the adjacent target plate is approximately equal to the distance between the magnetic field maxima 12 in the region of the target plate surface.
- These two geometrically relevant points are located simultaneously in one of the two magnetic field maxima 11 during the rotation of the tube target 1.
- the deviations in the sputtering rate cancel each other out due to the different radial distance between the tube target surface and the axis of rotation of the tube target 1 and thus to the fixed magnet system 10 occur.
- the arrangement is to be carried out analogously in such a way that the same number of polygon corners 4 and polygon sinks 6 are in the magnetic field maxima 11 at the same time.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03727150A EP1488445A2 (de) | 2002-03-22 | 2003-03-24 | Rohrmagnetron |
| AU2003233915A AU2003233915A1 (en) | 2002-03-22 | 2003-03-24 | Tube magnetron |
| US10/508,819 US20050145488A1 (en) | 2002-03-22 | 2003-03-24 | Tube magnetron |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10213043.4 | 2002-03-22 | ||
| DE10213043A DE10213043B4 (de) | 2002-03-22 | 2002-03-22 | Rohrmagnetron und seine Verwendung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003081634A2 true WO2003081634A2 (de) | 2003-10-02 |
| WO2003081634A3 WO2003081634A3 (de) | 2004-03-04 |
Family
ID=27815898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2003/000962 Ceased WO2003081634A2 (de) | 2002-03-22 | 2003-03-24 | Rohrmagnetron |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050145488A1 (de) |
| EP (1) | EP1488445A2 (de) |
| AU (1) | AU2003233915A1 (de) |
| DE (1) | DE10213043B4 (de) |
| WO (1) | WO2003081634A2 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010149790A3 (de) * | 2009-06-26 | 2011-03-03 | Von Ardenne Anlagentechnik Gmbh | Verfahren zur beschichtung eines subtrates in einer vakuumkammer mit einem rotierenden magnetron |
| EP4131332A1 (de) | 2021-08-04 | 2023-02-08 | FHR Anlagenbau GmbH | Mehrfach-sputtertarget |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7790003B2 (en) * | 2004-10-12 | 2010-09-07 | Southwest Research Institute | Method for magnetron sputter deposition |
| US7592051B2 (en) * | 2005-02-09 | 2009-09-22 | Southwest Research Institute | Nanostructured low-Cr Cu-Cr coatings for high temperature oxidation resistance |
| US7842355B2 (en) | 2005-11-01 | 2010-11-30 | Applied Materials, Inc. | System and method for modulation of power and power related functions of PECVD discharge sources to achieve new film properties |
| US20080047831A1 (en) * | 2006-08-24 | 2008-02-28 | Hendryk Richert | Segmented/modular magnet bars for sputtering target |
| DE502006008952D1 (de) † | 2006-11-14 | 2011-04-07 | Applied Materials Inc | Magnetron-Sputterquelle, Sputter-Beschichtungsanlage und Verfahren zur Beschichtung eines Substrats |
| GB0715879D0 (en) * | 2007-08-15 | 2007-09-26 | Gencoa Ltd | Low impedance plasma |
| US20100044222A1 (en) * | 2008-08-21 | 2010-02-25 | Guardian Industries Corp., | Sputtering target including magnetic field uniformity enhancing sputtering target backing tube |
| CN102272347B (zh) * | 2009-01-30 | 2014-03-05 | 普雷克斯S.T.科技公司 | 管靶 |
| JP5265811B2 (ja) * | 2010-06-03 | 2013-08-14 | 株式会社アルバック | スパッタ成膜装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD217964A3 (de) * | 1981-10-02 | 1985-01-23 | Ardenne Manfred | Einrichtung zum hochratezerstaeuben nach dem plasmatronprinzip |
| US4443318A (en) * | 1983-08-17 | 1984-04-17 | Shatterproof Glass Corporation | Cathodic sputtering apparatus |
| FR2725073B1 (fr) * | 1994-09-22 | 1996-12-20 | Saint Gobain Vitrage | Cathode rotative de pulverisation cathodique a plusieurs cibles |
| FR2745010B1 (fr) * | 1996-02-20 | 1998-06-12 | Serole Michelle Paparone | Cible de pulverisation cathodique de forme tubulaire ou derivee, faite de plusieurs plaques longitudinales et sa methode de fabrication |
| JPH1129863A (ja) * | 1997-07-10 | 1999-02-02 | Canon Inc | 堆積膜製造方法 |
-
2002
- 2002-03-22 DE DE10213043A patent/DE10213043B4/de not_active Expired - Fee Related
-
2003
- 2003-03-24 US US10/508,819 patent/US20050145488A1/en not_active Abandoned
- 2003-03-24 AU AU2003233915A patent/AU2003233915A1/en not_active Abandoned
- 2003-03-24 WO PCT/DE2003/000962 patent/WO2003081634A2/de not_active Ceased
- 2003-03-24 EP EP03727150A patent/EP1488445A2/de not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010149790A3 (de) * | 2009-06-26 | 2011-03-03 | Von Ardenne Anlagentechnik Gmbh | Verfahren zur beschichtung eines subtrates in einer vakuumkammer mit einem rotierenden magnetron |
| US8992742B2 (en) | 2009-06-26 | 2015-03-31 | Von Ardenne Anlagentechnik Gmbh | Method for coating a substrate in a vacuum chamber having a rotating magnetron |
| EP4131332A1 (de) | 2021-08-04 | 2023-02-08 | FHR Anlagenbau GmbH | Mehrfach-sputtertarget |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050145488A1 (en) | 2005-07-07 |
| DE10213043B4 (de) | 2008-10-30 |
| DE10213043A1 (de) | 2003-10-09 |
| EP1488445A2 (de) | 2004-12-22 |
| WO2003081634A3 (de) | 2004-03-04 |
| AU2003233915A1 (en) | 2003-10-08 |
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