The supply of ajinomoto build-up film (ABF) substrates has been tight, and will continue to fall short of demand in the second half of 2019, Digitimes reports.
Several suppliers, including PCB makers Ibiden and Taiwan's Unimicron Technology, have plans to expand production capacity for ABF substrates while many players continue to resolve bottleneck issues to scale up their output. However, growth on the supply side will still fail to catch up with demand growth, Digitimes adds.