Korea Chipmakers Jump After Japan Eases Materials Export Curbs

Shares of Korean electronics makers surged after Japan said it’ll roll back export restrictions of key semiconductor materials, laying to rest concern about the fragility of an important link in the tech supply chain.

SK Hynix Inc. jumped as much as 7.3%, the biggest intraday rise in more than two months Friday. Samsung Electronics Co. rose more than 2% and LG Electronics Inc.gained as much as 1.7%

Japan said it plans to ease licensing requirements on fluorinated polyimide, hydrogen fluoride and photoresists — all essential ingredients for the manufacture of displays and semiconductors that go into gadgets including Apple ...