Source: http://www.google.com/patents/US5986753?dq=5,579,517
Timestamp: 2014-09-19 10:47:56
Document Index: 286631515

Matched Legal Cases: ['art 130', 'art 132', 'art 132', 'art 132', 'art 132', 'art 132']

Patent US5986753 - Wafer holding and orienting fixture for optical profilometry - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsAn optical profilometer having a movable head for measurement of the profile of a surface of a wafer under test in response to an optical beam projected by the head and incident onto the surface. The wafer may be a substrate for a data storage disc, and the surface may be one of a plurality of surfaces...http://www.google.com/patents/US5986753?utm_source=gb-gplus-sharePatent US5986753 - Wafer holding and orienting fixture for optical profilometryAdvanced Patent SearchPublication numberUS5986753 APublication typeGrantApplication numberUS 09/037,203Publication dateNov 16, 1999Filing dateMar 9, 1998Priority dateMar 9, 1998Fee statusLapsedPublication number037203, 09037203, US 5986753 A, US 5986753A, US-A-5986753, US5986753 A, US5986753AInventorsMatthew E. Seelig, Silvio P. Marchese-RagonaOriginal AssigneeChapman Instruments Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (2), Referenced by (13), Classifications (4), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetWafer holding and orienting fixture for optical profilometryUS 5986753 AAbstract An optical profilometer having a movable head for measurement of the profile of a surface of a wafer under test in response to an optical beam projected by the head and incident onto the surface. The wafer may be a substrate for a data storage disc, and the surface may be one of a plurality of surfaces of the wafer, including the side face, the edge, and a radius or bevel therebetween. A fixture for holding the wafer includes a frame for orienting the wafer and also pivotally rotating the wafer about an axis. A vacuum chuck holds the wafer on the frame. An actuator orients the fixture frame in an plurality of positions spaced angularly about the axis to present selected ones of the wafer surfaces to the beam for profile measurement. Wafers of various diameters may be accommodated on the fixture.
As will be discussed more fully hereinafter in connection with FIG. 5 the chuck assembly 36 provides for holding of the wafer upon attachment to the chuck 37 of the chuck assembly 36. Then in the vertical (90�) or intermediate (22 degree, plus or minus 5 degree) positions shown in FIGS. 1A and 1B, the edge or bevel/radius surface may be scanned to measure the profile contour thereof.
Referring FIGS. 12 through 18A there is shown the tilt mechanism 32. This mechanism includes a part 130 in the form of a cylinder which is fixedly mounted to the support block 31 and therefore is fixed with respect to the stage 27. The tilt mechanism 32 also includes a rotary part 132 which is rotatably mounted on a shoulder screw 134 and rotates in the direction shown by the arrows 136. A mounting piece 138 on the front face of the rotary part 132 has the inside end of the cantilevered frame plate 40 attached thereto; the frame plate 40 being mounted on the cantilever beam 42 so as to rotate about the axis 21. The location and positioning of the frame assembly, the frame plate 40 and wafer carried thereon by the vacuum chuck is accomplished by manually pivoting the plate 40 between the 0�, 22� and 90� positions. In the 0� and 90� positions the detent 64 which is provided by a plunger 140 having a pin 142 which enters into 0� and 90� holes 144 and 146 and the rotary part 132.
The rotary part 132 of the tilt mechanism 32 has a elongated blind slot 160 which receives the plunger pin 150. When the block 160 is in its center position (intermediate the threaded portion of the shaft 156) the plunger pin 150 locates the wafer 20 and its holding assembly at 22� with respect to the horizontal. By rotating the knob 54, the block 68 is moved laterally in the direction of the arrow 164. The walls of the slot 160 then cam the pin 150 as a follower so as to rotate the rotary part 132 over an angular range suitably plus and minus 5� from the 22� position.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS5017012 *Aug 4, 1989May 21, 1991Chapman Instruments, Inc.Viewing system for surface profilerUS5369490 *Apr 23, 1993Nov 29, 1994Nikon CorporationContour measuring apparatus* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6091503 *Jun 8, 1999Jul 18, 2000Tdk CorporationMethod for determining mechanical property of resin discs and optical discsUS6188485 *Apr 14, 1999Feb 13, 2001Veeco CorporationDisk-mount device for automatic successive testing of computer-drive disk blanks by interferometryUS6342705 *Sep 10, 1999Jan 29, 2002Chapman InstrumentsSystem for locating and measuring an index mark on an edge of a waferUS6888154Mar 6, 2002May 3, 2005Seagate Technology LlcMethod of marking and detecting disc indexUS7015418May 15, 2003Mar 21, 2006Gsi Group CorporationMethod and system for calibrating a laser processing system and laser marking system utilizing sameUS7067763May 15, 2003Jun 27, 2006Gsi Group CorporationHigh speed, laser-based marking method and system for producing machine readable marks on workpieces and semiconductor devices with reduced subsurface damage produced therebyUS7119351May 15, 2003Oct 10, 2006Gsi Group CorporationMethod and system for machine vision-based feature detection and mark verification in a workpiece or wafer marking systemUS7232101 *Nov 26, 2003Jun 19, 2007Pemstar, Inc.Hard drive test fixtureUS7616301Mar 3, 2004Nov 10, 2009N&K Technology, Inc.Disc clamping device for multiple standard discsUS8362797Aug 25, 2009Jan 29, 2013Advanced Inquiry Systems, Inc.Maintaining a wafer/wafer translator pair in an attached state free of a gasket disposed therebetweenUS8405414Sep 28, 2011Mar 26, 2013Advanced Inquiry Systems, Inc.Wafer testing systems and associated methods of use and manufactureUSRE41924 *Nov 30, 2007Nov 16, 2010Gsi Group CorporationMethod and system for machine vision-based feature detection and mark verification in a workpiece or wafer marking systemWO2012054201A1 *Sep 28, 2011Apr 26, 2012Advanced Inquiry Systems, Inc.Wafer testing systems and associated methods of use and manufacture* Cited by examinerClassifications U.S. Classification356/244International ClassificationG01B5/00Cooperative ClassificationG01B5/0002European ClassificationG01B5/00BLegal EventsDateCodeEventDescriptionJan 3, 2012FPExpired due to failure to pay maintenance feeEffective date: 20111116Nov 16, 2011LAPSLapse for failure to pay maintenance feesJun 20, 2011REMIMaintenance fee reminder mailedApr 10, 2007FPAYFee paymentYear of fee payment: 8May 13, 2003FPAYFee paymentYear of fee payment: 4Mar 9, 1998ASAssignmentOwner name: CHAPMAN INSTRUMENTS, NEW YORKFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SEELIG, MATTHEW E.;MARCHESE-RAGONA, SILVIO P.;REEL/FRAME:009076/0758Effective date: 19980227RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google