Title:
SUBSTRATE GLASS FOR DISPLAY DEVICE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3770670
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain substrate glass suitable for melting molding methods including a direct melting molding method and for a flotation molding method and having thermal characteristics suitable for the substrate glass by specifying the composition of the substrate glass.
SOLUTION: This substrate glass has a composition comprising 52-54wt.% of SiO2, 7-11wt.% of Al2O3, 0-5wt.% of ZrO2, 1-5wt.% of MgO, 5-9wt.% of CaO, 0-5wt.% of SrO, 8-14wt.% of BaO, 20-25wt.% of (MgO+CaO+SrO+BaO), 0-1wt.% of TiO2, 0-5wt.% of Li2O, 2-6wt.% of Na2O, 7-11wt.% of K2O, and 13-15wt.% of (Li2O+Na2O+K2O). The substrate glass preferably has a glass strain point of ≥590°C, a thermal expansion degree of 84-88 (x10-7/°C) at room temperature to 300°C, and a volume resistivity of 109Ω/cm.
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Inventors:
Machishita Panshi
Tadashi Muramoto
Tadashi Muramoto
Application Number:
JP30171396A
Publication Date:
April 26, 2006
Filing Date:
November 13, 1996
Export Citation:
Assignee:
Central Glass Co., Ltd.
International Classes:
C03C3/087; H01J11/34; H01J11/36; H01J11/38; H01J11/44; H01J11/48; H01J17/16; (IPC1-7): C03C3/087; H01J11/02; H01J17/16
Domestic Patent References:
| JP6040739A | ||||
| JP8133778A |
Other References:
成瀬省,ガラス工学,日本,共立出版株式会社,1981年10月15日,初版,第20頁~第22頁
Attorney, Agent or Firm:
Yoshiyuki Nishi