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A seal for a liquid crystal cell contains a non-wettable metal and a wettable metal.
English (United States)
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Liquid Crystal Cell Seal
A seal for a liquid crystal cell contains a non-wettable metal and a wettable
As shown in Fig. 1, a picture frame of twin lines of a non-wettable metal 10,
such as chromium is deposited on both a sheet of tin oxide coated glass 12 and
a passivated silicon substrate 14. A wettable metal 15, such as copper-gold, is
deposited on the substrate and the tin oxide coated glass within the twin lines of
non-wettable metal 10. A solder alloy 16A is then deposited on top of the
wettable metal 15.
The two parts are then positioned so that the solder alloy regions 16A are in
contact with each other. The two parts are joined, as shown in Fig. 2, by heating
in an oven to form the desired seal 16B.
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