An electronic device has a display mounted in a housing using a plastic display frame. The coating is removed by the laser irradiation in the form of dots having the same diameter and the same mutual spacing. And thus, while etching the layers over the gate pad, the layers over the data pad are etched without any damage to the data pad and without overetching the data pad. The second semiconductor die is singulated from the semiconductor wafer, and the combined first semiconductor die and second semiconductor die are then connected to another substrate. The methods comprise administering to a mammal a composition containing pyrimidine nucleotide precursors in amounts sufficient to treat symptoms resulting from mitochondrial respiratory chain deficiencies.