Company experienced strong design activity in solutions for backlighting, general lighting, battery, smartphone and tablet markets; expecting products to continue to ramp in the second half of 2015 Anticipated higher overall gross margin levels reflect cash breakeven level estimate of $17.5-$18.5 million and profitability breakeven level estimate of $20.0-$21.0 million on a quarterly basis O2Micro International Limited , a global leader in the design, development and marketing of high-performance integrated circuits and solutions, reported its financial results today for the second quarter of 2015, ending June 30, 2015. O2Micro International Limited reported Q2 2015 revenue of $14.7 million.