Wafer alignment fixture for wafers having notches and/or flats
First Claim
Patent Images
1. A wafer support assembly for a wafer alignment fixture, said assembly comprisinga support having a pair of spaced parallel upstanding walls defining wafer support surfaces at the upper ends;
- a dowel pin disposed in parallel between said walls on an axis disposed longitudinally of said walls to support a roller thereon while contacting an outer surface of the roller;
means for adjustably supporting said dowel pin in said support for raising and lowering said pin relative to said walls, said means including a flat bar supporting said dowel pin horizontally thereon and a vertically disposed dowel pin supporting said bar support thereon; and
a screw rotatably mounted in said support for actuating said means in response to rotation of said screw to move said dowel pin relative to said walls.
1 Assignment
0 Petitions
Accused Products
Abstract
The wafer alignment fixture is provided with a cassette support which can be slid between two positions on a base plate. In one position, the cassette support is aligned with a roller in order to align notched wafers with each other. In the second position, the cassette support is aligned with a second roller so as to effect alignment of wafers having flats.
17 Citations
21 Claims
-
1. A wafer support assembly for a wafer alignment fixture, said assembly comprising
a support having a pair of spaced parallel upstanding walls defining wafer support surfaces at the upper ends; -
a dowel pin disposed in parallel between said walls on an axis disposed longitudinally of said walls to support a roller thereon while contacting an outer surface of the roller; means for adjustably supporting said dowel pin in said support for raising and lowering said pin relative to said walls, said means including a flat bar supporting said dowel pin horizontally thereon and a vertically disposed dowel pin supporting said bar support thereon; and a screw rotatably mounted in said support for actuating said means in response to rotation of said screw to move said dowel pin relative to said walls. - View Dependent Claims (2)
-
-
3. A wafer alignment fixture for wafers comprising
cassette support means for supporting a cassette containing a row of wafers, at least some of said wafers having one of a peripheral notch and a flat therein; -
means for moving said support means between a first position and a second position; a first roller extending within said support means and below a supported cassette to frictionally contact a row of wafers therein with said support means in said first position and to lift the wafers within the cassette; first means for rotating said first roller to cause the wafers in frictional contact with said first roller to rotate within the cassette to bring a notch of a respective wafer into alignment with said roller; a wafer support assembly for supporting each respective wafer having a notch aligned with and receiving said first roller therein; a second roller extending in spaced parallel relation to said first roller below the cassette to frictionally contact the row of wafers with said support means in said second position and to lift the wafers within the cassette; and second means for rotating said second roller to cause the wafers in frictional contact therewith to rotate within the cassette to bring a flat of a respective wafer into alignment with said second roller while lowering the respective wafer within the cassette. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A wafer alignment fixture for wafers comprising
cassette support means for supporting a cassette containing a row of wafers, at least some of said wafers having one of a peripheral notch and a flat therein; -
means for moving said support means between a first position and a second position; a first roller extending within said support means and below a supported cassette to frictionally contact a row of wafers therein with said support means in said first position and to lift the wafers within the cassette; first means for rotating said first roller to cause the wafers in frictional contact with said first roller to rotate within the cassette to bring a notch of a respective wafer into alignment with said roller; a wafer support assembly for supporting each respective wafer having a notch aligned with and receiving said first roller therein; a second roller extending in spaced parallel relation to said first roller below the cassette to frictionally contact the row of wafers with said support means in said second position and to lift the wafers within the cassette; and second means for rotating said second roller to cause the wafers in frictional contact therewith to rotate within the cassette. - View Dependent Claims (19, 20, 21)
-
Specification