DE4201003A1 - Automatic de-burring method for ink printing head made of semiconductor wafer - using ceramic pipe connected to vacuum pump, which moves on wafer surface scraping and sucking burrs - Google Patents

Automatic de-burring method for ink printing head made of semiconductor wafer - using ceramic pipe connected to vacuum pump, which moves on wafer surface scraping and sucking burrs

Info

Publication number
DE4201003A1
DE4201003A1 DE4201003A DE4201003A DE4201003A1 DE 4201003 A1 DE4201003 A1 DE 4201003A1 DE 4201003 A DE4201003 A DE 4201003A DE 4201003 A DE4201003 A DE 4201003A DE 4201003 A1 DE4201003 A1 DE 4201003A1
Authority
DE
Germany
Prior art keywords
burrs
semiconductor wafer
vacuum pump
wafer
ink printing
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.)
Granted
Application number
DE4201003A
Other languages
German (de)
Other versions
DE4201003C2 (en
Inventor
Christoph Dipl Ing Hamann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE4201003A priority Critical patent/DE4201003C2/en
Publication of DE4201003A1 publication Critical patent/DE4201003A1/en
Application granted granted Critical
Publication of DE4201003C2 publication Critical patent/DE4201003C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/10Rigid pipes of glass or ceramics, e.g. clay, clay tile, porcelain
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B23D79/02Machines or devices for scraping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042Devices for removing chips
    • B23Q11/0046Devices for removing chips by sucking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/065Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of thin, brittle parts, e.g. semiconductors, wafers

Abstract

The ink printing heads are produced by creating holes (2) on a semiconductor wafer (1) with a laser. The deburring method involves holding the wafer in a frame. A ceramic pipe (4) connected to a vacuum pump is moved in the X, Y directions (6) automatically. The scraped burrs are sucked by the vacuum pump. Bending of the wafer may be compensated by the vacuum in the suction pipe. ADVANTAGE - Uniform de-burring and high yield.

Description

Die Erfindung betrifft ein Verfahren zum Entgraten. Dies be­ zieht sich insbesondere auf flächige und spröde Werkstücke, die nach einem Bearbeitungsvorgang Grate aufweisen. Damit kön­ nen insbesondere gebohrte Halbleiterscheiben entgratet werden.The invention relates to a method for deburring. This be especially applies to flat and brittle workpieces, which have burrs after a machining operation. So that In particular, drilled semiconductor wafers are deburred.

Bei vielen Bearbeitungsvorgängen entstehen an den Werkstücken Grate, deren Entfernung teilweise große Schwierigkeiten be­ reiten. Dabei ist es günstig, wenn der Werkstoff an sich spröde ist, da in diesem Fall die Grate in der Regel leicht gebrochen und entfernt werden können. Duktile Werkstoffe kön­ nen beispielsweise durch entsprechende Abkühlung in diesen Be­ reich, in dem der Werkstoff spröde bricht, überführt werden.Many machining processes result in the workpieces Ridges, the removal of which is sometimes very difficult horse riding. It is beneficial if the material itself is brittle because in this case the burrs are usually light can be broken and removed. Ductile materials can NEN, for example, by appropriate cooling in these Be rich in which the material breaks brittle.

In Tintenstrahldruckern sind in den zugehörigen Tintendruck­ köpfen glasartige Materialien vorhanden, die im Herstellungs­ verfahren bearbeitet werden müssen. Hierzu zählen beispiels­ weise auch Halbleiterscheiben bzw. Wafer. Diese werden mit Bohrungen versehen, den sog. Tintendurchgangslöchern. Dies kann entweder durch mechanisches Bohren oder durch den Einsatz eines Lasers in einem thermischen Verfahren geschehen. Auf je­ den Fall entsteht an der Lochunterkante ein Grat, der entfernt werden muß, um die Schädigung der Halbleiterscheibe bei den nachfolgenden Prozeßschritten zu vermeiden.In inkjet printers are in the associated ink printing Head glassy materials present in the manufacturing process procedures must be processed. These include, for example also semiconductor wafers. These are with Provide holes, the so-called ink through holes. This can either by mechanical drilling or by use a laser in a thermal process. On each The case creates a ridge on the bottom edge of the hole that removes must be to the damage to the semiconductor wafer at the to avoid subsequent process steps.

Bisherige Verfahren zur Entfernung von Graten an flächigen und spröden Werkstoffen werden manuell durchgeführt. So wird bei­ spielsweise eine Keramikscheibe über die Rückseite der Halb­ leiterscheibe geschoben. Durch die manuelle Vorgehensweise ist nicht mit einer gleichbleibenden Qualität dieses Vorgangs zu rechnen. Darüber hinaus kann bei einem flächigen Werkstück, dessen zu bearbeitende Fläche nicht eben ist, teilweise ein Grat stehen bleiben.Previous methods for removing burrs on flat and brittle materials are carried out manually. So at for example a ceramic disc over the back of the half conductor disc pushed. By the manual procedure is not with a consistent quality of this process count. In addition, with a flat workpiece, whose surface to be worked on is not even, partly a Burr stop.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Entfernen von Graten an flächigen und spröden Werkstoffen be­ reitzustellen, mittels dem in einem automatisierbaren Vorgang ein reproduzierbares und vollständiges Entgraten gewährleistet wird.The invention has for its object a method for  Removal of burrs on flat and brittle materials to sit down, by means of an automated process reproducible and complete deburring guaranteed becomes.

Die Lösung dieser Aufgabe wird durch den Einsatz eines Saug­ rohres, das mittels Unterdruck an das flächige Werkstück ange­ saugt wird, erzielt. Dabei werden die Grate durch das seitli­ che Verfahren des Saugrohres relativ zum flächigen Werkstück abgeschabt. Das Saugrohr muß dabei an seiner Stirnseite stumpf oder schneidenartig ausgebildet sein. Zudem saugt sich das Saugrohr durch den anliegenden Unterdruck an das ortsfest ge­ haltene Werkstück. Ein seitliches Verfahren des Saugrohres re­ lativ zum Werkstück ist jedoch gleichzeitig möglich.The solution to this problem is through the use of a suction pipe, which is attached to the flat workpiece by means of negative pressure is sucked, achieved. The ridges are covered by the lateral che move the suction pipe relative to the flat workpiece scraped. The suction pipe must be blunt on its face or be designed like a knife. It also sucks Suction pipe through the applied vacuum to the stationary ge holding workpiece. A lateral movement of the suction pipe right relative to the workpiece, however, is possible at the same time.

Es ist besonders vorteilhaft, wenn das Saugrohr, das an seiner Stirnseite stumpf oder schneidenförmig ausgebildet ist, aus Keramik besteht. Durch die gute Abriebfestigkeit dieses Werk­ stoffes bleibt die Funktionsfähigkeit lange erhalten. Außerdem können mit keramischem Werkstoff feste und scharfe Kanten er­ zeugt werden.It is particularly advantageous if the intake manifold attached to its End face is blunt or cut-shaped Ceramic is made. Due to the good abrasion resistance of this movement Functionality remains for a long time. Furthermore can use ceramic material to create firm and sharp edges be fathered.

Im folgenden wird anhand einer schematischen Figur ein Ausfüh­ rungsbeispiel beschrieben:In the following, an embodiment is based on a schematic figure Example described:

Die Halbleiterscheibe 1 bzw. der Wafer, in den eine Vielzahl von Tintendurchgangslöchern mit Laserstrahlung gebohrt wurde, wird in einen Rahmen gespannt und ortsfest fixiert. Die Halb­ leiterscheibe 1 ist in der Regel zumindest einseitig mit einer Schutzschicht bedeckt. Die Bohrungen 2 sind in diesem Fall von der Seite, auf der sich die Schutzschicht befindet, einge­ bracht worden. Die Grate 3 befinden sich somit auf der gegen­ überliegenden Seite der Halbleiterscheibe 1. Bei der Einspan­ nung der Halbleiterscheibe 1 in den Rahmen sind sämtliche Boh­ rungen 2 von unten her frei zugänglich. Ein aus Keramik beste­ hendes Saugrohr 4 wird von unten her an die Halbleiterscheibe 1 herangefahren. Das Saugrohr 4 befindet sich auf einem ver­ fahrbaren Tisch und ist an ein Unterdrucksystem angeschlossen. The semiconductor wafer 1 or the wafer, in which a multiplicity of ink passage holes have been drilled with laser radiation, is clamped in a frame and fixed in place. The semi-conductor disc 1 is usually covered at least on one side with a protective layer. The holes 2 are in this case from the side on which the protective layer is placed. The ridges 3 are thus located on the opposite side of the semiconductor wafer 1 . When clamping the semiconductor wafer 1 in the frame, all holes 2 are freely accessible from below. A best existing ceramic suction tube 4 is moved from below to the semiconductor wafer 1 . The suction pipe 4 is located on a mobile table ver and is connected to a vacuum system.

Durch den anliegenden Unterdruck saugt sich das Saugrohr 4 an die Halbleiterscheibe 1 an. Anschließend wird das Saugrohr 4 mittels des verfahrbaren Tisches unter der Halbleiterscheibe 1 seitwärts in den Bewegungsrichtungen 6 verfahren. Dabei werden die Grate 3 nacheinander an allen Bohrungen 2 mit dem Saugrohr 4 abgeschabt.Due to the negative pressure present, the suction pipe 4 is sucked onto the semiconductor wafer 1 . The suction pipe 4 is then moved sideways in the directions of movement 6 by means of the movable table under the semiconductor wafer 1 . The ridges 3 are successively scraped off at all holes 2 with the suction tube 4 .

Ein wesentlicher Vorteil des Verfahrens liegt in der einfachen Realisierbarkeit. Darüber hinaus muß die Halbleiterscheibe 1 nicht unterstützt oder von oben her gehalten werden. Eine der­ artige Handhabung wäre wegen der dort vorhandenen Schutz­ schicht ohnehin nicht möglich. Eine mögliche Durchbiegung der Halbleiterscheibe 1 wird durch den Unterdruck im Saugrohr 4 kompensiert.A key advantage of the method is that it can be easily implemented. In addition, the semiconductor wafer 1 does not have to be supported or held from above. Such handling would not be possible anyway due to the protective layer there. A possible deflection of the semiconductor wafer 1 is compensated for by the negative pressure in the intake manifold 4 .

Ein aus Keramik bestehendes Saugrohr 4 hat beispielsweise einen Durchmesser von 25 mm und eine Wandstärke von ca. 2 mm. Die Bohrungen 2 haben einen Durchmesser von 0,8 mm. Somit ist der Durchmesser des Saugrohres 4 deutlich größer als der der Bohrungen 2. Das Saugrohr 4 ist an seinem oberen Ende stumpf, d. h. rechtwinklig ausgebildet.A suction pipe 4 made of ceramic has, for example, a diameter of 25 mm and a wall thickness of approx. 2 mm. The bores 2 have a diameter of 0.8 mm. The diameter of the suction pipe 4 is thus significantly larger than that of the bores 2 . The suction pipe 4 is blunt at its upper end, that is, formed at right angles.

Claims (2)

1. Verfahren zum Entgraten von flächigen und nach einem Bear­ beitungsvorgang mit Graten (3) versehenen spröden Werk­ stücken, insbesondere zum Entgraten von gebohrten Halblei­ terscheiben (1), dadurch gekennzeichnet, daß an die flächige, Grate (3) aufweisende Seite eines ortsfesten Werkstückes
  • - ein relativ zu dem Werkstück bewegbares Saugrohr (4) angesetzt wird, wobei
  • - sich das Saugrohr (4) mittels Unterdruck (5) an das Werkstück ansaugt und
  • - die Grate (3) durch seitliches Verfahren des Saugrohres (4) relativ zum flächigen Werkstück durch das stumpf oder schneidenförmig ausgebildete Ende des Saugrohres (4) entfernt werden.
1. A method for deburring flat and after a machining process with burrs ( 3 ) provided by brittle work pieces, in particular for deburring drilled semiconductor plates ( 1 ), characterized in that on the flat burrs ( 3 ) having a stationary workpiece
  • - A suction pipe ( 4 ) movable relative to the workpiece is attached, wherein
  • - The suction pipe ( 4 ) is sucked onto the workpiece by means of negative pressure ( 5 ) and
  • - The ridges ( 3 ) by lateral movement of the suction tube ( 4 ) relative to the flat workpiece through the blunt or blade-shaped end of the suction tube ( 4 ) are removed.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Saugrohr (4) aus Keramik besteht.2. The method according to claim 1, characterized in that the suction pipe ( 4 ) consists of ceramic.
DE4201003A 1992-01-16 1992-01-16 Process for deburring flat and brittle workpieces Expired - Fee Related DE4201003C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4201003A DE4201003C2 (en) 1992-01-16 1992-01-16 Process for deburring flat and brittle workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4201003A DE4201003C2 (en) 1992-01-16 1992-01-16 Process for deburring flat and brittle workpieces

Publications (2)

Publication Number Publication Date
DE4201003A1 true DE4201003A1 (en) 1993-07-22
DE4201003C2 DE4201003C2 (en) 1994-01-27

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DE4201003A Expired - Fee Related DE4201003C2 (en) 1992-01-16 1992-01-16 Process for deburring flat and brittle workpieces

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112318135A (en) * 2020-10-27 2021-02-05 南京美诚铝业科技有限公司 Drilling and tapping all-in-one machine with deburring function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626141A (en) * 1970-04-30 1971-12-07 Quantronix Corp Laser scribing apparatus
DE3828246A1 (en) * 1987-08-19 1989-03-02 Sony Corp TAPE COPIER SETUP

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626141A (en) * 1970-04-30 1971-12-07 Quantronix Corp Laser scribing apparatus
DE3828246A1 (en) * 1987-08-19 1989-03-02 Sony Corp TAPE COPIER SETUP

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VDI-Z 130 (1988), Nr. 2-Februar *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112318135A (en) * 2020-10-27 2021-02-05 南京美诚铝业科技有限公司 Drilling and tapping all-in-one machine with deburring function
CN112318135B (en) * 2020-10-27 2022-02-08 南京美诚铝业科技有限公司 Drilling and tapping all-in-one machine with deburring function

Also Published As

Publication number Publication date
DE4201003C2 (en) 1994-01-27

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D2 Grant after examination
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