Method of manufacturing a semiconductor device to provide a plurality of test element groups (TEGs) in a scribe region
First Claim
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1. A method of manufacturing a semiconductor device, comprising the steps of:
- (a) forming a bonding pad and an extraction electrode each comprised of an uppermost layer wiring in a product circuit region;
(b) forming a protection film on an upper layer of said uppermost layer wiring; and
(c) partially exposing a surface of said bonding pad by removing a predetermined part of said protection film, wherein said uppermost layer wiring is formed by depositing a conductive body and then patterning by a lithography method, a plurality of logic circuits provided with said extraction electrode are formed in said product circuit region, and after partially exposing the surface of said extraction electrode by removing said protection film on said extraction electrode, a probe having a tip radius of curvature of about 0.05 μ
m to 0.8 μ
m is contacted to said extraction electrode, and then logic values of said logic circuits are evaluated.
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Abstract
Disclosed is a technique capable of improving a yield of a semiconductor device by measuring a plurality of TEGs arranged in a scribe region. A first electrode pad connected to each terminal of a TEG is formed as a rectangular, minute, isolated pattern having a side length of about 0.5 μm or shorter and constituted of an uppermost layer wiring on a semiconductor substrate, and therefore, a great number of TEGs can be laid in a first scribe region. The characteristic evaluation or the failure analysis is performed by contacting a nanoprobe having a tip radius of curvature of 0.05 μm to 0.8 μm to the first electrode pad.
42 Citations
6 Claims
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1. A method of manufacturing a semiconductor device, comprising the steps of:
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(a) forming a bonding pad and an extraction electrode each comprised of an uppermost layer wiring in a product circuit region;
(b) forming a protection film on an upper layer of said uppermost layer wiring; and
(c) partially exposing a surface of said bonding pad by removing a predetermined part of said protection film, wherein said uppermost layer wiring is formed by depositing a conductive body and then patterning by a lithography method, a plurality of logic circuits provided with said extraction electrode are formed in said product circuit region, and after partially exposing the surface of said extraction electrode by removing said protection film on said extraction electrode, a probe having a tip radius of curvature of about 0.05 μ
m to 0.8 μ
m is contacted to said extraction electrode, and then logic values of said logic circuits are evaluated. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification