Title:
GLASS SUBSTRATE
Document Type and Number:
WIPO Patent Application WO/2015/033800
Kind Code:
A1
Abstract:
A glass substrate according to the present invention is characterized by having a glass composition that contains components in amounts falling within specified ranges, satisfies such a requirement that the total content of SiO2, Al2O3 and B2O3 is 67 to 76 mol%, and also satisfies requirements respectively represented by the formula: 0.6 ≤ Li2O/(Li2O+Na2O+K2O) ≤ 0.96 and the formula: 0.78 ≤ MgO/(MgO+CaO+SrO+BaO+ZnO) ≤ 0.98.
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Inventors:
KOMATSU TAKAFUMI (JP)
KAJITA HIROSHI (JP)
KAJITA HIROSHI (JP)
Application Number:
PCT/JP2014/072009
Publication Date:
March 12, 2015
Filing Date:
August 22, 2014
Export Citation:
Assignee:
HOYA CORP (JP)
International Classes:
C03C3/087; C03C3/091; C03C3/093; C03C3/097; C03C21/00; G11B5/73; G11B5/84
Foreign References:
| JPH11302031A | 1999-11-02 | |||
| JP2001076336A | 2001-03-23 | |||
| JP2001192227A | 2001-07-17 | |||
| JP2005314159A | 2005-11-10 | |||
| JP2011098863A | 2011-05-19 |
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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