With this construction, the insulation film which is partly removed as {HEAD ~ a part} of the etched portion is formed inside {TAIL ~ the composite substrate} in parallel with the main surface thereof 
is formed inside
With this construction , the insulation film which is partly removed as { HEAD ~ a part } of the etched portion is formed inside { TAIL ~ the composite substrate } in parallel with the main surface thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH