CPC H01C 17/30 (2013.01) [G03G 15/2039 (2013.01); G03G 15/2057 (2013.01); H05B 3/02 (2013.01); H05B 3/12 (2013.01); H05B 3/283 (2013.01); H05B 2203/01 (2013.01); H05B 2203/013 (2013.01); H05B 2203/017 (2013.01); H05B 2203/02 (2013.01); Y10T 29/49099 (2015.01)] | 20 Claims |
1. A heater, comprising:
an aluminum nitride base having equal to or less than 1% impurities;
at least one longitudinally extending resistive trace on the aluminum nitride base and a conductor on the aluminum nitride base electrically connected to the at least one resistive trace to apply an external voltage to the at least one resistive trace; and
at least four glass layers overlying the at least one resistive trace, but not an entirety of the conductor.
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