Glass for laser processing and method for producing perforated glass using same

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United States of America Patent

PATENT NO 10329185
APP PUB NO 20180022634A1
SERIAL NO

15550257

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Abstract

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The present invention provides a glass composition that allows holes with a circular contour and a smooth inner wall to be formed by a collective micro-hole-forming process using a combination of modified portion formation by ultraviolet laser irradiation and etching, the glass composition being adapted for practical continuous production. The present invention relates to a glass for laser processing, the glass having a glass composition including, in mol %: 45.0%≤SiO2≤70.0%; 2.0%≤B2O3≤20.0%; 3.0%≤Al2O3≤20.0%; 0.1%≤CuO≤2.0%; 0%≤TiO2≤15.0%; and 0%≤ZnO≤9.0%, wherein a relationship of 0≤Li2O+Na2O+K2O<2.0% is satisfied.

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Patent Owner(s)

  • NIPPON SHEET GLASS COMPANY LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Teruhide Kanagawa, JP 10 44
Koyo, Hirotaka Hyogo, JP 19 296
Sakaguchi, Koichi Osaka, JP 59 508

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