H.C. Starck is an international company producing various metal powders, ceramic powders, chemicals and more.
The company had an active OLED program, developing a range of conductive polymers, under the Clevios brand, for use as the hole injection layer (HIL) in OLED displays. In September 2010, H.C. Starck sold the Clevios unit to Heraeus.
Hyundai LCD has been making LCDs since 1998 (as a division of Hyundai Electronics Industries). The company became independent on 2002 and is focused on display production. It is branding itself as HYeLCD.
HYeLCD used to also offer PMOLED panels, but it seems that they no longer do.
Innovacene (founded in 2010 by a New Hampshire University professor) is commercializing new thin, organic and ultra-lightweight coating for OLED and organic solar cells.
The company is no longer is business and its web site (innovacene.com) is down.
Irico group was established in 1978 in China and manufactured color picture tube (CPT), LCD and LED-backlit LCDs. Irico produced PMOLED displays and has also begun construction of a pilot AMOLED line back in March 2009 (investment was $75 million).
Irico planned to build two AMOLED production lines in a 9.5 billion yuan ($1.4 billion) investment. It seems as if the company is no longer in business though.
Konica Minolta Pioneer OLED was established in 2017 as a joint venture between Konica Minolta and Pioneer to accelerate automotive OLED lighting. The new company was formed with an initial capital of 490 million yen (about $4.4 million) and a focus on OLED lighting for automotive applications.
The new "strategic alliance" was to combine KM's roll-to-roll flexible OLED production equipment and technology with Pioneer's achievement in OLED panel mass-production and market rollout and its car electronics business know-how. In 2019 the company was dissolved following Pioneer's withdrawal from the OLED lighting market.
Kyocera Display was established in December 2011 when Kyocera bought Optrex. The company offers LCD and PMOLED displays. It is not clear whether Kyocera still products OLED displays.
Leadis was a fabless company that developed mixed-signal semiconductors. Leadis focused on LED drivers/controllers and also used to make PMOLED and AMOLED drivers (using their EPiC Technology for AMOLED controllers).
In January 2009 Leadis sold its driver business to Korea based AsTEK, although Leadis remained the owner of the AMOLED EpiC technology IP. In 2012 the company liquidated and is no longer in business.
