Helped by restructuring efforts and the recovering semiconductor sector, Japan's major electronic appliance and computer chip manufacturers have reported earnings improvements for the past business year.

On Thursday, Mitsubishi Electric Corp. announced that it posted 40.3 billion yen in pretax profit and 24.8 billion yen in net profit on a consolidated basis for the year that ended March 31 -- its first profit in three years.

"We have been implementing structural reforms since last year," a Mitsubishi Electric official said. "And as a result of measures to correct our high-cost structure, we managed to improve our profits."