Browse Prior Art Database

Open Conductor Repair for Glass Metal Module

IP.com Disclosure Number: IPCOM000076472D
Original Publication Date: 1972-Mar-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Tappen, FM: AUTHOR

Abstract

Repair is performed by this method on an open conductor of a glass metal module when the open is located prior to glassing over it. The glass metal module is formed in Fig. 1 with glass layer 1 having deposited thereon a metal line 2. Line 2 has a break or open 3 in it to be repaired. The metal layer 2 acts as a land pattern which connects to a semi-conductor chip.

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Open Conductor Repair for Glass Metal Module

Repair is performed by this method on an open conductor of a glass metal module when the open is located prior to glassing over it. The glass metal module is formed in Fig. 1 with glass layer 1 having deposited thereon a metal line 2. Line 2 has a break or open 3 in it to be repaired. The metal layer 2 acts as a land pattern which connects to a semi-conductor chip.

To accomplish the repair of break 3, a glass slide 4 of optical quality has a plurality of low-adhesion area lines 5 formed on it. Perpendicular to these low adhesion area lines are formed a plurality of metal lines 6 of similar thickness and width to line 2. Lines 6 should be compatible and weldable to broken line 2 on the module.

In Fig. 1 metal line 6 to be transferred as aligned over break 3. Glass slide 4 and module 1 are then pressed together for establishing surface contact of lines 2 and 6. Using a laser beam 7 (Fig. 2) at the areas 8, 9 of metal layer 6, a portion of metal layer 6 is welded to broken line 2 on each side of break 3. If necessary, the line 6 on the slide could be cut on the outside of the two welds to facilitate the removal of the glass slide 4 without breaking the repair line. As shown in Fig. 3, the repaired line 2 is now glassed over at 10 with the remaining metallurgy layers.

In place of welding line 6 over break 3, the line could be reflowed into the break using a laser or it could be evaporated into the break.

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