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Patent Searching and Data


Title:
GLASS SUBSTRATE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/189480
Kind Code:
A1
Abstract:
This glass substrate manufacturing method comprises: a molding process for molding an intermediate glass plate from a glass raw plate; and a process for cutting the intermediate glass plate into a prescribed shape. The molding process includes: a heat treatment in which the principal surfaces on both sides of the glass raw plate are heated using a heating source while the glass raw plate is supported so that the glass raw plate does not contact the heating source; and a pressurization treatment in which the principal surfaces on both sides of the glass raw plate which have been heat treated are sandwiched between a pair of dies, and the glass raw plate is pressurized to mold the intermediate glass plate. In the cutting process, the radiation position of a laser beam is moved relative to the intermediate glass plate along a prescribed contour shape in the pressurization-treated portion of the intermediate glass plate so as to cut along the contour shape.

Inventors:
TAMAKI MASANORI (JP)
Application Number:
PCT/JP2019/013385
Publication Date:
October 03, 2019
Filing Date:
March 27, 2019
Export Citation:
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Assignee:
HOYA CORP (JP)
International Classes:
C03B33/09; B23K26/364; B23K26/53; B28D5/00; C03B11/00
Foreign References:
JPH1111973A1999-01-19
JP2016219085A2016-12-22
JP2013140648A2013-07-18
JP2009087409A2009-04-23
JP2006500308A2006-01-05
JP2015067500A2015-04-13
Attorney, Agent or Firm:
GLOBAL IP TOKYO (JP)
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