Title:
GLASS FOR CHEMICAL STRENGTHENING, CHEMICALLY STRENGTHENED GLASS, AND GLASS PLATE FOR DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/043482
Kind Code:
A1
Abstract:
Provided is glass used for chemically strengthened glasses of which the strength is less likely to be reduced, even when impressions are formed on the glass. A glass for chemical strengthening containing, in mole percentage in terms of oxides, 62 to 68% of SiO2, 6 to 12 % of Al2O3, 7 to 13 % of MgO, 9 to 17 % of Na2O, and 0 to 7% of K2O, wherein: the Al2O3 content subtracted from the sum of the Na2O and K2O content is less than 10 %; and, when the glass contains ZrO2, the content thereof is 0.8 % or less. A chemically strengthened glass obtained by chemically strengthening the aforementioned glass for chemical strengthening. The chemically strengthened glass, wherein the thickness of a compressive stress layer formed on the glass surface is 30 µm or more, and the surface compressive stress is 550 MPa or more.
Inventors:
ENDO JUN (JP)
AKIBA SHUSAKU (JP)
ONO KAZUTAKA (JP)
NAKASHIMA TETSUYA (JP)
AKIBA SHUSAKU (JP)
ONO KAZUTAKA (JP)
NAKASHIMA TETSUYA (JP)
Application Number:
PCT/JP2011/071901
Publication Date:
April 05, 2012
Filing Date:
September 26, 2011
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
ENDO JUN (JP)
AKIBA SHUSAKU (JP)
ONO KAZUTAKA (JP)
NAKASHIMA TETSUYA (JP)
ENDO JUN (JP)
AKIBA SHUSAKU (JP)
ONO KAZUTAKA (JP)
NAKASHIMA TETSUYA (JP)
International Classes:
C03C3/085; C03C21/00; G02F1/1333
Foreign References:
| JP2002507538A | 2002-03-12 | |||
| JP2004043295A | 2004-02-12 | |||
| JP2010168252A | 2010-08-05 | |||
| JP2005051116A | 2005-02-24 | |||
| KR20090124973A | 2009-12-03 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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Claims:
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