- 专利标题: GLASS SUBSTRATE FOR DISPLAY AND METHOD FOR PRODUCING SAME
-
申请号: US15740906申请日: 2016-06-28
-
公开(公告)号: US20180190675A1公开(公告)日: 2018-07-05
- 发明人: Manabu ICHIKAWA
- 申请人: AvanStrate Inc.
- 申请人地址: JP Tokyo
- 专利权人: AvanStrate Inc.
- 当前专利权人: AvanStrate Inc.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2015-131780 20150630
- 国际申请: PCT/JP2016/069145 WO 20160628
- 主分类号: H01L27/12
- IPC分类号: H01L27/12 ; C03B5/027 ; C03B17/06 ; C03B25/04 ; C03C3/091 ; C03C3/093 ; H01L29/786 ; G02F1/1368
摘要:
Provided are: a glass substrate that achieves a high strain point while having a low devitrification temperature; and a method for producing said glass substrate. This glass substrate for a display is made of a glass comprising SiO2 and Al2O3, comprising 0% or more to less than 3% B2O3 and from 5 to 14% BaO in mass %, and substantially devoiding Sb2O3, wherein the devitrification temperature is 1235° C. or lower and the strain point is 720° C. or higher. Alternatively, this glass substrate for a display is made of a glass comprising SiO2 and Al2O3, comprising 0% or more to less than 3% B2O3, 1.8% or more MgO, and from 5 to 14% BaO in mass %, and substantially devoiding Sb2O3, wherein (SiO2+MgO+CaO)—(Al2O3+SrO+BaO) is less than 42%, the devitrification temperature is 1260° C. or lower, and the strain point is 720° C. or higher. This method for producing said glass substrate for a display comprises: a melting step for melting, by using at least direct electrical heating, a glass material prepared to have a predetermined composition; a forming step for forming, into a flat glass sheet, the molten glass that has been melted in the melting step; and an annealing step for annealing the flat glass sheet, wherein a condition for cooling the flat glass sheet is controlled so as to reduce the heat shrinkage rate of the flat glass sheet.
公开/授权文献
- US11069716B2 Glass substrate for display and method for producing same 公开/授权日:2021-07-20
信息查询
IPC分类: