{HEAD ~ An insulating layer} is provided over {TAIL ~ the first substrate} and comprises a plurality of notches 
{ HEAD ~ An insulating layer } is provided over { TAIL ~ the first substrate } and comprises a plurality of notches
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH