Integrated circuits have evolved into complex devices that include millions of devices including transistors, capacitors and resistors, on a single chip. The evolution of chip designs has provided faster circuitry and greater circuit density. As the demand for integrated circuits continue to rise, chip manufacturers have demanded semiconductor process tooling having increased wafer throughput and greater product yield. To meet this increase in throughput, tooling has been developed to process ever wider diameter wafers, for example, wafers having diameters of 300 millimeters (mm).
The chip manufacturers order semiconductor wafer processing tools from semiconductor processing tool manufacturers, such as Applied Materials, Inc., of Santa Clara, Calif. Prior to delivery of the semiconductor wafer processing tool, the chip manufacturer typically prepares the facility to receive and install the tool. Preparations include establishing placement of where the tool is to be located in a room, and providing the necessary facility conduits (“rough plumbing”) to carry electricity and fluids including process and exhaust gases, and liquids including water, coolants and process chemicals between the power, gas and liquid sources of the facilities and the processing tool. A footprint of the tool is provided to the chip manufacturer for laying out the facility conduits.
Floor measurements may be taken of the wafer processing facility using X-Y coordinates, which include distances from walls, structures, and the like. In addition, measurements of the tool are taken, or templates, such as thin film Mylar templates of the tool footprint may be provided to determine the positioning of the wafer processing tool in a room at the facility as well as cutouts in a facility floor. Other methods may be utilized to determine the positioning of the wafer processing tool in the room at the facility.
Once rough plumbing of the facility conduits has been installed or at least laid out, the plumbing lines can be extended through the floor for subsequent connection to the processing tool. However, it has been observed that upon delivery of the processing tool to the chip manufacturer's facility, the facility conduits can obstruct the final positioning of the processing tool. As such, positioning the processing tool can be cumbersome and the facility conduits may be damaged. Furthermore, additional time is taken to complete the facility conduits connections to the wafer processing tool once the wafer processing tool is positioned. This is often experienced in connection with the installation of gas lines which are often hard line facility conduits that can be relatively inflexible.
Embodiments are directed to a method and apparatus for installing a semiconductor substrate processing tool at a semiconductor substrate fabrication facility. One embodiment includes a semiconductor substrate processing tool installation template. In an illustrated embodiment, an apparatus includes a flat, plate-shaped template adapted for facilities integration. The template defines a plurality of apertures arranged in a predetermined pattern of locations, each template aperture adapted to position a facility conduit passing through each template aperture in a predetermined location to facilitate subsequently coupling the positioned facility conduit to the wafer processing tool.
In another embodiment, a method of installing a plurality of facility conduits in a wafer fabrication facility for subsequent coupling to a wafer processing tool includes determining a location where a wafer processing tool is to be positioned in a wafer fabrication facility; forming a cutout in a floor of the fabrication facility corresponding to the location; providing a plurality of facility conduits through the cutout in the floor; mounting a flat, plate-shaped template defining a plurality of apertures arranged in a predetermined pattern of locations, to the floor and over the cutout in the floor; passing a facility conduit through each template aperture to position the facility conduit passing through each template aperture in a predetermined location; and coupling the wafer processing tool to the facility conduits.
Other embodiments are described and claimed.
Examples of embodiments of the present invention will now be described with reference to the drawings in which:
To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements, which are common to the figures.
A template in accordance with one embodiment of the present description is indicated generally at 100 in
A template in accordance with another embodiment of the present description is indicated generally at 200 in
The wafer processing tool 300 of the illustrated embodiment includes a mainframe transfer chamber 302 to which are coupled three wafer processing chambers 304a, 304b and 304c. In this example, the template 100 (indicated in phantom in
Wafers to be processed are unloaded from one or both of a pair of pods or cassettes 308a, 308b by a robot 310 of a factory interface 312. The robot 310 loads the wafers to be processed into one or both of a pair of load lock chambers 314a, 314b which upon being sealed, are pumped down to or near the operating pressure of the mainframe transfer chamber 302. Many wafer transfer and processing chambers typically operate at very low pressures, often near vacuum levels.
Once the pressure of the load lock chambers is sufficiently low, the load lock chambers 314a, 314b are opened to the mainframe transfer chamber 302 and a robot 320 of the mainframe transfer chamber 302 transfers the wafers to one of the processing chambers 304a, 304b, 304c. Upon completion of the processing, wafers are returned to the load lock chambers 314a, 314b. Once the pressure of the load lock chambers returns to ambient, the load lock chambers 314a, 314b are opened to the factory interface 312. The robot 310 transfers the processed wafers to one or both of the pods 308a, 308b. It should be appreciated that the foregoing description is of one example of the construction and operation of a wafer processing tool which may be installed utilizing templates in accordance with the present description. The construction and operation of the tool may vary, depending upon the particular processing operations being conducted, the number of wafers being processed and other factors which will be known to those skilled in the art.
As best seen in
The various locations of the footprint 610 may be measured relative to a datum point 620 affixed to the facility floor 500. Each such footprint location may be determined as a two dimensional (x, y) displacement from the datum point 620. In accordance with another aspect of the present description, the template 100 has a pair of fastener apertures 626a, 626b which receive fasteners which fasten the template to the top surface 606 of the facility floor 500. The fastener apertures 626a, 626b and the fastener points of the floor 500 at which fasteners pass through the fastener apertures 626a, 626b and the floor 500 to fasten the template 100 to the facility floor 500, may be used as registration points to precisely position the template 100 within the footprint of the tool 300 to be installed.
In a similar manner, each template 200a, 200b, 200c has a pair of fastener apertures 630a, 630b which receive fasteners which fasten the template 200a, 200b, 200c to the top surface 606 of the facility floor 500. The fastener apertures 630a, 630b and associated template fastening points of the floor 500 may here too be used as registration or fiducial points to precisely position the template 200a, 200b, 200c within the footprint of the tool 300 to be installed. Thus, the x, y displacements of the fastener apertures 630a, 630b and associated template fastening points of the floor 500 relative to the floor datum point 620 may be measured to ensure that the template 200a, 200b, 200c is properly located within the footprint 610 and over the associated floor cutouts. Once, properly located, the template 200a, 200b, 200c may be fastened in place at that location. In the illustrated embodiment, removable fasteners such as threaded bolts, machine screws, etc. are used to fasten the template 200a, 200b, 200c in place to permit the template 200a, 200b, 200c to be removed prior to actual installation of the tool 300 itself.
It is appreciated that other types of fasteners may be used to fasten a template 100, 200a, 200b, 200c to the floor of a facility, depending upon the particular application. It is further appreciated that registration or fiducial points other than fastener apertures and fastening points may be used to locate the template within the tool footprint on the floor. For example, fiducial points may be silk screened or otherwise imprinted or embossed or cut into the template. It is further appreciated that other locations and other numbers of locations on the template may be used as registration or fiducial points.
As best seen in
Referring to
In a similar manner, each template 200a, 200b, 200c defines a recess 720 positioned on the periphery of the template and adapted to receive protruding facility floor fixtures such as the leveling feet 640. Thus, for example, the template recess 720 of the template 200a receives the leveling feet 640c as shown in
Referring to
Although specific shapes of the templates 100, 200, 200a, 200b, 200c with their associated arrangements and shapes of recesses have been illustrated and described, it should be appreciated that a variety of shapes and arrangements may be utilized, depending upon the particular application. Nonetheless, it is believed that the particular embodiments described and illustrated herein, have particular suitability for the illustrated application and other applications as well.
As each template 100, 200a, 200b, 200c is mounted (block 400,
Further in this example, the facility conduit 600 may be a weldment, that is, a welded assembly of component portions 752a, . . . 752n. The number and lengths of the component portions 752a, 752b . . . 752n may depend upon the length and directions of the path between the template aperture 102 and the facility source 602. In many applications, such as gas conduits, for example, nonpermanent couplers such as connect-disconnect couplers are to be avoided in conduit runs from a facility source to the raised floor of a wafer processing tool. Hence, the facility conduit 600 of the example of
When all the joints 762a, 762b . . . 762n are welded, the flexibility of the facility conduit 600 is substantially limited. Hence, in many applications, it may be appropriate to insert an upright portion 752a of a facility conduit 600 through the template aperture 102 before completing the welding of all the joints 762a, 762b . . . 762n of the facility conduit 600. Because the template 100 has been positioned and mounted (block 400) at a measured footprint location, and the aperture 102 of
The connect-disconnect coupler 604 of the upright portion 752a may be temporarily secured flush with the floor surface 606 or at an appropriate height above the floor upper surface 606 by use of a clamp 770 or other suitable device temporarily attached to the upright portion 752a. Once the upright portion 752a has been inserted into the appropriate template aperture 102 and secured at the appropriate height, the facility conduit 600 may be completed. The order in which joints are welded and the facility conduits are coupled to the source 602 may vary depending upon the particular application. Also, for some facility conduits, it may be appropriate to complete the facility conduit from the facilities source to the raised floor before inserting the free end through the appropriate template aperture. Also, some facility conduits may be sufficiently flexible, such as flexible hoses or alternating current (AC) power conduits, such that the installation may be completed in any order.
As previously mentioned, the apertures 102 of the template 100 are arranged in a predetermined pattern of locations.
In another aspect, the apertures of each cluster are labeled with suitable label indicia 802, identifying the function of the facility conduit to be located by the associated aperture. Table 1 below identifies the function of each facility conduit to be located by the apertures of the cluster 800a:
Table 2 below identifies the function of each facility conduit to be located by the apertures of the cluster 800b:
The clusters 800c and 800d are labeled in a similar manner to that of the cluster 800b and the functions of the corresponding facility conduits are similar as well for the associated wafer processing chambers. It is appreciated that the arrangement of the functions of the facility conduits corresponding to the template 100 may be varied depending upon the particular application. However, it is believed that the arrangement of facility conduit functions illustrated in
The identifying indicia 802 may be silk screened on the templates 100, 200a, 200b, 200c. However other identifying markings may be utilized such as labels, engraving, and the like.
In another aspect of the present description, the apertures 202 of the template 200a, 200b, 200c are arranged in a predetermined pattern of locations.
In yet another aspect, the apertures of the templates 200a, 200b, 200c are labeled with suitable label indicia 808, uniquely identifying each aperture. In the illustrated embodiment, each aperture 202 has a unique number label such as “1”, “2”, “3” . . . n, depending upon the number of apertures of the template. Each numbered aperture may be assigned to locate a particular facility conduit as appropriate for that particular application.
Once all of the facility conduits associated with the templates 100. 200a, 200b, 200c have been located (block 750,
To prepare the tool site for installation of the tool 300, one or more of the facility conduits extending above the top surface 606 of the facility floor may hinder the placement of the tool above the floor 500. Accordingly, in another aspect of the present description, it is believed that such facility conduits may be readily pressed downward (block 850) to permit the tool 300 to be moved into place within the footprint 610. It is believed that relatively stiff facility conduits such as gas line weldment conduits nonetheless retain sufficient flexibility after installation to the facility source (or other intermediate facility support points) to permit a sufficient degree of movement to permit the tool 300 to be placed within the proper footprint 610.
Once the wafer processing tool 300 is placed at the proper location within the footprint 610, the facility conduits may be displaced (block 860) upwardly, as needed, and coupled to the tool 300 as shown in
In another operation, the facility conduits may optionally be locked (block 870) to additional facility structures intermediate the floor 500 and the facility source 602. Securing the facility conduits in such a manner may be appropriate for earthquake preparedness or other concerns.
The entire lengths of the facility conduits may be checked for leaks and proper electrical connections. Upon positive results, the facility conduits may be coupled to their respective sources and supplies external to the wafer processing tool 202 for subsequent use.
In the illustrated embodiments, the templates 100, 200a, 200b, 200c may be made of tough, break resistant, transparent plastics such as polycarbonate. One suitable plastic is marketed under the name Lexan™. It is appreciated that other materials may be utilized including metal or wood or other types of plastic.
In another aspect, the thickness of the plate-shaped template 100 may be, for example, ⅛ of an inch. Such a thickness facilitates the template being able to support its own weight when extending across a relatively wide cutout and also sufficiently secure the facility conduits being located by the template. It is appreciated that other thicknesses may be utilized as well.
In the illustrated embodiment, the template 100 has an overall dimension of approximately 33 inches by 35 inches. The orthogonally angled recesses 704a, 704b extend approximately 5 by 7 inches. The obtuse angled (135 degree) recesses 708a, 708b extend approximately 8 by 13 inches. The foreline apertures have a diameter of 4.75 inches and most of the remaining apertures of the template 100 have a diameter of 2 inches. It is appreciated that other dimensions may be used. However, it is believed that the illustrated dimensions are particularly suitable for the illustrated embodiment.
In the illustrated embodiment, each template 200a, 200b, 200c has an overall dimension of approximately 4 inches by 33 inches and a thickness of approximately one tenth of an inch. The chamfered recess 720 is angled at an angle of 45 degrees and has a width of approximately 2.75 inches. Each of the apertures 202 has a diameter of 1.25 inches. It is appreciated that other dimensions may be used. However, it is believed that the illustrated dimensions are particularly suitable for the illustrated embodiment.
The foregoing description of various embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. For example, it is appreciated that the shapes and sizes of the templates may vary, depending upon the application. Furthermore, the operations illustrated in
Number | Date | Country | |
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60863319 | Oct 2006 | US |