an insulating board having {HEAD ~ a plurality} of openings therethrough, with at least some of the openings at positions corresponding to {TAIL ~ the IC chip contact areas} 
an insulating board having { HEAD ~ a plurality } of openings therethrough , with at least some of the openings at positions corresponding to { TAIL ~ the IC chip contact areas }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL