Metal plate, method of manufacturing metal plate, and method of manufacturing deposition mask by use of metal plate
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United States of America Patent
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Nov 28, 2017
Grant Date -
Aug 18, 2016
app pub date -
Sep 24, 2014
filing date -
Oct 15, 2013
priority date (Note) -
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Abstract
The object of the present invention is to provide a metal plate capable of manufacturing a deposition mask in which dispersion of positions of through-holes is restrained. A thermal recovery rate is defined as parts per million of a difference a distance between to measurement points on a sample before a heat treatment and a distance therebetween after the heat treatment, relative to the distance therebetween before the heat treatment. In this case, an average value of the thermal recovery rates of the respective samples is not less than −10 ppm and not more than +10 ppm, and (2) a dispersion of the thermal recovery rates of the respective samples is not more than 20 ppm.
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