Samsung Display’s Dr. Sung-Chul Kim gave a keynote speech during IMID 2016 being held in Jeju ICC in South Korea. He emphasized that AMOLED is the suitable display for the current trend and discussed the issues to be solved for AMOLED.
Kim gave several talks this year on similar topics but this is the first time he mentioned BT2020 as AMOLED’s color space. Accordingly, concerns of OLED emitting materials companies are expected to increase.
Until now, Kim has been discussing phosphorescent blue materials as the key issue; only OLED phosphorescent materials are red and green, and development and application of phosphorescent blue materials are urgently needed, which will lead to 300% increase in efficiency. However, during this keynote speech, he emphasized BT2020 for the first time with the phosphorescent blue application.
BT2020 is color space with red, green, and blue wavelengths of 630nm, 532nm, and 467nm respectively. In CES 2016, it was selected by UHD Alliance as the color space applied to UHD TV.
According to AMOLED Characteristics Analysis Report of Galaxy S Series, published by UB Research in May 2016, Galaxy series’ color space needs to meet BT2020. In order to meet this, for u’, red needs to increase, green decrease, and blue to decrease. For v’, red needs to decrease, green to increase, and blue to increase in terms of color coordinate movement.
Resolution and color coordinates of mobile device panel tends to follow TV development direction. As UHD Alliance selected BT2020 as the standard, AMOLED panel for mobile that meets this requirement needs to be produced. Accordingly, OLED emitting materials companies’ development focus, which is currently on lifetime and efficiency, is expected to be required to change.