Measuring and testing – Coating material: ink adhesive and/or plastic
Patent
1984-12-24
1986-09-23
Frankfort, Charles
Measuring and testing
Coating material: ink adhesive and/or plastic
73842, G01B 2108, G01N 308, G01N 1904
Patent
active
046128050
ABSTRACT:
A test site for gauging the adhesion between the insulating layers and the metal layers used to produce the various devices on a semiconductor chip. The chip-sized test site can be formed along with the product chips on the product wafers. The layers of the test site are arranged such that a first polyimide layer forms a first test interface with a silicon nitride layer and a second test interface with a first metal layer, and a second polyimide layer forms a third test interface with a second metal layer, a fourth test interface with the first polyimide layer, and a fifth test interface with the silicon nitride layer. These five interfaces form a single continuous adhesion test interface. During a 90.degree. peel test, the layers of the test site will sequentially separate along this interface. Thus, the adhesion at five different interfaces can be tested during a single peel test on a chip-sized test site.
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Bruce James A.
Narechania Rajesh G.
Chadurjian Mark F.
Frankfort Charles
International Business Machines - Corporation
Worth W. Morris
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