A thin black mask is created using a single mask process. A dielectric layer is deposited over a substrate. An absorber layer is deposited over the dielectric layer and a reflector layer is deposited over the absorber layer. The absorber layer and the reflector layer are patterned using a single mask...http://www.google.com.au/patents/US7969638?utm_source=gb-gplus-sharePatent US7969638 - Device having thin black mask and method of fabricating the same
Device having thin black mask and method of fabricating the same
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FIG. 4
5 5 0 0 0 505505505505505505 + _+ _ + .+ .+ . +
1 2 3
m m m 1 2 3 W
0 0 0 0 M M
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FIG. 5B
I
45\ 47 Transceiver *— Speaker 52Cond'i'oning 27\ I 48Input
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