LG Display Develops Blue Phosphorescent OLED Panel for Future Advancements
TapTechNews August 22nd news, ETNews quoted industry insiders as saying that LG Display has successfully developed an OLED panel using blue phosphorescence, which greatly improves the energy efficiency of OLED, thereby reducing power consumption, extending battery life, and enhancing brightness, laying an important foundation for the further development of OLED.
TapTechNews note: The organic substances in OLED panels can be divided into 'phosphorescence' and 'fluorescence' according to their luminescence methods. Among them, the phosphorescent material can theoretically achieve nearly 100% exciton energy conversion rate, while the fluorescent material is only 25%.
In simple terms, the current OLED products on the market have successfully applied phosphorescence on the red and green pixels in the three primary colors, but the phosphorescent material in the blue part is difficult to develop due to problems such as lifetime and color accuracy (the blue wavelength is short and the energy is high, resulting in decreased stability). Therefore, fluorescent materials are still being used, so the blue phosphorescent OLED is also known as 'the last difficult problem of OLED' (for example, Samsung has developed a diamond arrangement to solve the problem of low blue luminous efficiency, which is also the currently recognized optimal arrangement scheme).
An LG executive said, 'We have successfully developed the OLED panel based on blue phosphorescence that we have been researching,' and 'As far as I know, we plan to conduct mass production performance evaluation and commercialization review within the year.'
ETNews reported that LGDisplay used a 'hybrid' method of mixing blue fluorescent material and phosphorescent material to combine the long life of the fluorescent material with the efficient characteristics of the phosphorescent material, thereby achieving the same long life as the existing OLED. An industry insider also mentioned that 'the dual-stack tandem technology has played a key role, and the first blue phosphorescent display is expected to be commercialized.'