Thursday, May 2025

02:10 PM - 02:30 PM

Room: LL20BC

Session: OLED Displays I

A Next Milestone in WOLED Technology for OLED TV and IT Displays: Enhancing Efficiency, Color Gamut, and Longevity

Distinguished

• Jung Keun Kim

  LG Display Co., Ltd.

Description:

This study will introduce a recent innovative progress in white organic light emitting diode (WOLED) technology for premium OLED TV and IT displays. By fabricating a 4- stack tandem device consisting of red, first blue, green, and second blue devices in sequence from the anode, we could enhance the current efficiency up to 134 cd/A at 10 mA/cm2, also resulting in higher efficiency of red, green, and blue subpixels after transmitting color filter. Since no longer adopting yellow green (YG) dopant, the color gamut in BT2020 was widen up to 83%. Moreover, device reliability was not deteriorated, thanks to development of green dopant and hosts.