Glass plate for display panels, process for producing it, and process for producing TFT panel

摘要

To provide a glass plate for display panels which has a low B 2 O 3 content and a low compaction and which can be used as a glass substrate for large TFT panels. A glass plate for display panels, which comprises, as a glass matrix composition as represented by mass% based on oxide: SiO 2 50.0 to 73.0, Al 2 O 3 6.0 to 20.0, B 2 O 3 0 to 2.0, MgO 4.2 to 9.0, CaO 0 to 6.0, SrO 0 to 2.0, BaO 0 to 2.0, MgO+CaO+SrO+BaO 6.5 to 11.3, Li 2 O 0 to 2.0, Na 2 O 2.0 to 18.0, K 2 O 0 to 13.0, and Li 2 O+Na 2 O+K 2 O 8.0 to 18.0,
and has a heat shrinkage (C) of at most 20 ppm.