Japan approved up to ¥590 billion ($3.9 billion) in subsidies to chip venture Rapidus Corp., committing more money to its ambition to catch up in semiconductor manufacturing.The additional funding will help Rapidus buy chipmaking equipment and also develop advanced back-end chipmaking processes, Economy Minister Ken Saito said. The amount is on top of billions of public money the 19-month-old startup has already received in its long-shot bid to mass produce chips in Japan’s northernmost prefectu...