GLASS WITH IMPROVED TOTAL PITCH STABILITY

摘要

Described herein are alkali-free, boroalumino silicate glasses exhibiting desirable physical and chemical properties for use as substrates in flat panel display devices, such as, active matrix liquid crystal displays (AMLCDs) and active matrix organic light emitting diode displays (AMOLEDs). In accordance with certain of its aspects, the glasses possess excellent compaction and stress relaxation properties.

主权项

1. A glass exhibiting the following performance criteria:
(a) compaction in the LTTC less than or equal to 4.6 ppm; (b) compaction in the HTTC less than or equal to 36 ppm; and (c) less than 50% of an induced stress relaxed in the SRTC, the glass comprising, in mole percent on an oxide basis: SiO2 50-85, Al2O3 0-20, B2O3 0-10, MgO 0-20, CaO 0-20, SrO 0-20, BaO 0-20, where SiO2, Al2O3, B2O3, MgO, CaO, SrO and BaO represent the mole percents of the oxide components.