Frit sealing of large device

Details Frit sealing of large device Frit sealing of large device

2008-02-29

2011-11-29

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

Supporting and/or spacing elements

C313S498000, C313S506000

Reexamination Certificate

active

08067883

ABSTRACT:
A hermetically sealed device comprising a spacing unit and a resistive heating element desirably having a closed-loop structure and process for hermetically sealing a device by using such heating element and spacing unit. The frit can form multiple closed-loops to prevent crack propagation. The heating element can be advantageously made of a metal such as Invar® and/or Kovar®. The invention enables hermetic frit sealing with low residual stress in the seal for large-area displays. The invention is particularly advantageous for hermetic sealing of OLED display devices having a large area, such as those above 10 inches (25 cm).

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