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US 6,202,482 B1Granted
Method and apparatus for testing of sheet material
AssigneeLehighton Electronics, Inc.
InventorsAustin R. Blew, Alexander Eidukonis
Life of this patent
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AssigneeLehighton Electronics, Inc.
InventorsAustin R. Blew, Alexander Eidukonis
Estimating the term…
An apparatus for testing of electrical, mechanical, physical and/or chemical properties of material in sheet form includes a cassette for holding of sheets and sensors rigidly mounted relative to the cassette. The sensors may be mounted adjacent a test location exterior to the cassette. The cassette and the sensors may be so configured and positioned that a suitable end effector may move sheets of material between storage locations in the cassette and test locations adjacent the sensors. A method for testing sheet material includes the steps of placing the sheet material in a cassette, and conducting tests employing one or more sensors rigidly mounted with respect to the cassette. The method may include employing an end effector to remove the sheet from the cassette, to position the sheet stepwise in several positions relative to the sensors, and to replace the sheet in the cassette upon completion of testing. Materials to be tested include flat panels for computer screens and other applications and semiconductor wafers.
Apparatus for testing of material in sheet form, comprising:
Method for testing sheet material, comprising the steps of placing the sheet material in a test location comprising a defined space adapted to receive a sheet supported on an end effector, said test location being rigidly mounted relative to a cassette having side walls and a plurality of shelves supported by said side walls, and conducting tests to determine electrical properties of the sheet material, employing one or more sensors in said test location, removing the sheet from the test location and placing the sheet on one of said shelves.
Apparatus for testing of material in sheet form, comprising:
Method for testing sheet material, comprising the steps of placing the sheet material in a cassette for storage of material in sheer form, said cassette comprising side walls and top walls defining a front opening, and a plurality of shelves supported on said side walls, positioning the sheet material stepwise in proximity to a plurality of sensors in the form of compact test heads located in an electrically insulating substrate mounted only adjacent the front opening and testing electrical properties of the sheet material at a plurality of locations on the material while the material is so positioned.
Dependencies are inferred from the claim text.