JX to invest additional ¥3.3B in InP substrate production at Isohara plant

JX announced an additional ¥3.3 billion investment to expand indium phosphide (InP) substrate production capacity at its Isohara plant in Ibaraki Prefecture, Japan. Combined with a previous ¥1.5 billion investment, capacity will increase 1.5 times by fiscal 2027 compared to 2025.

“JXは、光通信の受発光素子などに用いられる化合物半導体材料「インジウムリン（InP）基板」の生産能力を増強する。”eetimes.itmedia.co.jp

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• eetimes.itmedia.co.jpJXがInP基板の生産拠点増強、33億円を追加投資：2027年度には生産能力が1.5倍に - EE Times JapanOct 15, 2025

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