| 摘要 |
PROBLEM TO BE SOLVED: To carry out frit melting while exhausting and heating at the same time. SOLUTION: The board 100' with a display indicating board fixed after alignment consisting of a material with heat absorbency and having an electronic device for display is radiation heated with heater devices 4, 5 in a vacuum chamber 1 being exhausted by a vacuum pump 6, to which the above display board is bonded by frit melting.
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