Method for forming projections and depressions, sealing structure, and light-emitting device
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United States of America Patent
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Sep 5, 2017
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app pub date -
Jul 15, 2016
filing date -
Apr 19, 2013
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Abstract
A novel method for forming projections and depressions is provided. A novel sealing structure is provided. A novel light-emitting device is provided. A first step of forming a film containing at least two kinds of metals having different etching rates over a surface; a second step of heating the film so that the metal having a lower etching rate segregates; a third step of selectively etching the metal having a higher etching rate; and a fourth step of selectively etching the surface using a residue containing the metal having a lower etching rate are included.
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