Apparatus for mapping scratches in an oxide film

A method and apparatus for detecting scratches on a wafer surface. The method comprises the use of a monitor wafer which has a substrate, a first layer deposited on the substrate, and a second layer deposited on the first layer. The first and second layers have contrasting work functions such that w...

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Hauptverfasser: LANDERS WILLIAM FRANCIS, SINGH JYOTHI
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creator LANDERS WILLIAM FRANCIS
SINGH JYOTHI
description A method and apparatus for detecting scratches on a wafer surface. The method comprises the use of a monitor wafer which has a substrate, a first layer deposited on the substrate, and a second layer deposited on the first layer. The first and second layers have contrasting work functions such that when short wavelength light is directed on the monitor wafer, scratches through the second layer can be detected.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
title Apparatus for mapping scratches in an oxide film
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