Browse Prior Art Database

Artwork Generator

IP.com Disclosure Number: IPCOM000093490D
Original Publication Date: 1967-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Davies, MB: AUTHOR [+2]

Abstract

In order to provide the selective wiring of the good elements of a limited yield batch-fabricated device, a series of wiring pattern images A...L is accurately defined, side-by-side, in mask 1. Images A...L have different slopes and are equally spaced. Further, images A...L are closely spaced to limit the length of mask 1. The latter is mounted in carrier 2 for movement relative to a traversing table, not shown, on which the batch-fabricated device is mounted for generation of the redundancy wiring. A slot in disk 4 provides an aperture 3 through which a selected one of the images A...L can be projected onto the batch fabricated device. By use of a suitable optical system an image of reduced size is focused on the device. Disk 4 is supported by wheels 5, 6, and 7 so as to have a virtual center of rotation.

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Artwork Generator

In order to provide the selective wiring of the good elements of a limited yield batch-fabricated device, a series of wiring pattern images A...L is accurately defined, side-by-side, in mask 1. Images A...L have different slopes and are equally spaced. Further, images A...L are closely spaced to limit the length of mask 1. The latter is mounted in carrier 2 for movement relative to a traversing table, not shown, on which the batch-fabricated device is mounted for generation of the redundancy wiring. A slot in disk 4 provides an aperture 3 through which a selected one of the images A...L can be projected onto the batch fabricated device. By use of a suitable optical system an image of reduced size is focused on the device. Disk 4 is supported by wheels 5, 6, and 7 so as to have a virtual center of rotation. By rotating disk 4, aperture 3 can be positioned so that its center line lies along the center of whichever image is selected. For that purpose, pushrod 8 carries pin 9 which slides in slot 10. Pushrod 8 is supported by wheels 11, 12, 13, and 14 and is driven by carrier 2 through a reduction gear.

To generate the artwork for the redundancy wiring, the batch-fabricated device is coated with photoresist and mounted on the traversing table in accurate registration with carrier 2. Tape controlled stepping motors are used to position the traversing table and carrier 2 so that a selected image is aligned with a selected tab printed on the device. Th...