Temperature compensation for shape-induced in-plane stresses...

Glass manufacturing – Processes – With measuring – sensing – inspecting – indicating – or testing

Reexamination Certificate

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C065S029190, C065S090000, C065S095000, C065S097000

Reexamination Certificate

active

07984625

ABSTRACT:
Methods of fabricating glass sheets (13) are provided in which the sheets are cut from a glass ribbon (15) composed of a glass having a setting zone temperature range (SZTR). As the glass is drawn, it passes through the SZTR (31) and an across-the-ribbon temperature distribution is produced at least one longitudinal position along the ribbon to compensate for in-plane stress induced in the sheets (13) when flattened. Through such thermal compensation, glass sheets (13) are produced which exhibit controlled levels of distortion when cut into sub-pieces and thus are suitable for use as substrates in the manufacture of, for example, flat panel displays, e.g., LCD displays.

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