Sumitomo Chemical has been established in 1913, and since then has been researching and producing industrial chemicals and materials. Sumitomo has been working with CDT on PLED materials, and has acquired the company in July 2007.
Sumitomo was engaged in soluble OLED material design for both OLED lighting and OLED displays. The company's materials were used by JOLED in its printed monitors, and in 2018 Sumitomo invested in JOLED (which is no longer in business).
Contact information for Sumitomo Chemical
Global OLED emitter developers: comprehensive analysis
Sumitomo expects demand for PLED materials to increase, aims to ramp-up its OLED business
Sumitomo Chemical announced that the company expects demand for polymer OLED materials will increase as large-area OLED displays are entering into the market. Sumitomo hopes that its OLED materials will become the standard for large-area OLED production.

The address this next phase in its OLED business, Sumitomo has decided to integrate its PLED Business Planning office into its IT-related Chemicals Sector, which will enable it to ramp up its OLED materials business through integrated operations with its IT-related Chemicals Sector, which handles display-related materials.
Sumitomo and Merck detail their latest soluble OLED material performance
At the OLED Korea conference, both Merck and Sumitomo detailed their latest OLED inkjet material performance.
Sumitomo is advancing with its R&D efforts, and the company says that its PLED materials will be adopted in mass production systems by 2020 (although JOLED already uses PLEDs in its displays).
JOLED confirms its recent $400 million funding round, with four new strategic investors
JOLED raises $400 million - half of what it needs to establish its first printed OLED mass production line
CSoT details its OLED ink-jet printing plans, collaborates with Kateeva, Sumitomo, Merck, DuPont and Tianma
DSCC: the OLED circular polarizer will reach $1.27 billion in 2022
DSCC says that the OLED circular polarizer market is set to grow from $428 million in 2017 to $1.27 billion in 2022. The market is still dominated by mobile displays.

The OLED circular polarizer market is led by two companies, Sumitomo Chemical and Nitto Denko, with LG Chem increasing its market share in OLED TVs polarizers.
Sumitomo to exhibit OLED lighting fixtures at L+B 2018
OLED Ink-jet printing market situation, early 2018
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