Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 10, 2009
Patent Application Number
10499327
Date Filed
November 27, 2003
Patent Primary Examiner
Patent abstract
The present invention provides a manufacturing method of a glass substrate for an image display device having high picture quality. The reducing force in a float furnace is controlled to be decreased so that Sn++ content on a surface of the glass substrate forming an Ag electrode is a predetermined value or less. When the resultant Sn++ content on the surface of the glass substrate forming the Ag electrode exceeds the predetermined value, the surface is partially removed to decrease the Sn++ content to the predetermined value or less to suppress the occurrence of yellowing of the glass substrate.
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