Title:
GLASS PLATE FOR SUBSTRATE, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING TFT PANEL
Document Type and Number:
WIPO Patent Application WO/2011/049100
Kind Code:
A1
Abstract:
Disclosed is a glass plate for a substrate, which contains little B2O3 and has a β-OH value (mm-1) of 0.05-0.5. The glass plate for a substrate is suitable for use as a glass plate for a TFT panel.
Specifically disclosed is a glass plate for a substrate, which has a glass matrix composition comprising, in mol% based on oxides, 67-72 of SiO2, 1-7 of Al2O3, 0-4 of B2O3, 11-15 of MgO, 0-3 of CaO, 0-3 of SrO, 0-4 of BaO, 0-4 of ZrO2, 8-15 of Na2O and 0-7 of K2O, with SiO2 + Al2O3 being 71-77, MgO + CaO + SrO + BaO being 11-17 and Na2O + K2O being 8-17, said glass matrix composition satisfying K2O/(Na2O + K2O) ≤ 0.13 × (SiO2 + Al2O3 + 0.5B2O3 + 0.3BaO) - 9.4. The glass plate for a substrate has a β-OH value (mm-1) of 0.05-0.5 and a thermal shrinkage ratio (C) of not more than 16 ppm.
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Inventors:
TSUJIMURA Tomoyuki (Limited. 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
辻村 知之 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 〒1008405, JP)
KUROKI Yuichi (Limited. 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
辻村 知之 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 〒1008405, JP)
KUROKI Yuichi (Limited. 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
Application Number:
JP2010/068410
Publication Date:
April 28, 2011
Filing Date:
October 19, 2010
Export Citation:
Assignee:
Asahi Glass Company, Limited. (12-1, Yurakucho 1-chome Chiyoda-k, Tokyo 05, 〒1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区有楽町一丁目１２番１号 Tokyo, 〒1008405, JP)
TSUJIMURA Tomoyuki (Limited. 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
辻村 知之 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 〒1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区有楽町一丁目１２番１号 Tokyo, 〒1008405, JP)
TSUJIMURA Tomoyuki (Limited. 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
辻村 知之 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 〒1008405, JP)
International Classes:
C03C3/085; C03B18/02; C03C3/087; C03C3/091; C03C3/093; G02F1/1333; G09F9/30; H01J9/24; H01J17/16
Attorney, Agent or Firm:
OGURI Shohei et al. (Eikoh Patent Firm, Toranomon East Bldg. 10F 7-13, Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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