Glass substrate for flat panel display, process for...

Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...

Reexamination Certificate

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C501S070000, C065S032100, C065S032500, C065S099200, C065S099300, C065S099400, C065S099500, C065S099600

Reexamination Certificate

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08071494

ABSTRACT:
The present invention provides a glass substrate for flat panel display in which yellowing occurring in a case of forming silver electrodes on glass substrate surface is inhibited.A glass substrate for flat panel display, which is formed by a float method, which has a composition consisting essentially of, in terms of oxide amount in mass %:SiO250 to 72%,Al2O30.15 to 15%,MgO + CaO + SrO + BaO4 to 30%,Na2Omore than 0% and at most 10%,K2O1 to 21%,Li2O0 to 1%,Na2O + K2O + Li2O6 to 25%,ZrO20 to 10%, andFe2O30.0725 to 0.15%; andwherein the average Fe2+content in a surface layer of the glass substrate within a depth of 10 μm from the a top surface is at most 0.0725% in terms of Fe2O3amount.

REFERENCES:
patent: 5925583 (1999-07-01), Yoshii et al.
patent: 2009/0137379 (2009-05-01), Nagai et al.
patent: 10152339 (1998-06-01), None
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patent: 2004-51473 (2004-02-01), None
patent: 2004-189591 (2004-07-01), None
patent: 2006252828 (2006-09-01), None
patent: 2007523038 (2007-08-01), None
patent: WO 2005/080278 (2005-09-01), None
U.S. Appl. No. 13/163,820, filed Jun. 20, 2011, Nagai, et al.
Office Action issued Jan. 13, 2011, in Chinese Patent Application No. 200780041086.0 (with English translation).

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