JSR Corporation (Head Office: Minato-ku, Tokyo; CEO: Eric Johnson) has decided to establish a new photoresist development base in Japan in order to expand its R&D activities and strengthen its global electronic materials business. The company has further decided to build a semiconductor photoresist plant at its local subsidiary, JSR Micro Korea Co., Ltd. (JMK) to strengthen its activities and functions in Korea.

Since the acquisition of Inpria Corporation of the U.S. in 2021, we have been promoting the commercialization of Metal Oxide Resist (MOR), the most advanced photoresist for EUV, on a global scale. In Japan, in addition to the Fine Electronic Materials Development Center located in our Yokkaichi Plant, we have recently decided to establish a new R&D center for MOR in the Kanto area, where it will be easier to respond to global customers and collaborate with partner companies. Construction will begin this fall.

The new plant to be built in Korea will execute the final production process for MOR. MOR is being considered for adoption by major customers in Korea, and this investment will ensure local quality assurance and manufacturing capacity. The plant is expected to start operation in 2026.

We will continue to actively promote the development of fundamental technologies for cutting-edge photoresists, including MOR, on a global basis, and support our customers to establish their commercial production processes.