Method for forming spacers in flat panel displays using photo-etching
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United States of America Patent
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Jan 6, 1998
Grant Date -
N/A
app pub date -
Jan 19, 1996
filing date -
Jan 19, 1996
priority date (Note) -
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Abstract
Photoetchable glass is used to form spacer elements for large area field emission displays. Frit dots are placed onto a substrate. A sheet of photo etchable glass is exposed to UV light using a mask such that the UV light exposes the etchable areas and does not expose the areas which will form the spacers. The etchable glass is then heat treated to crystallize the UV exposed areas and to tailor the coefficient of thermal expansion. Next the glass is adhered to the frit coated substrate and the UV exposed areas etched away leaving spacers adhered to frit dots.
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