Samsung Display and LG Display are exploring the potential of a new low refractive index (RI) coating layer technology for small and medium-sized OLED panels, The Elec reports. Currently, high refractive index CPL is widely used in the sector to reduce power consumption and improve light direction.
Adding a low-refractive index CPL alongside an existing high refractive index variant can improve light utilization, increase optical efficiency, and potentially extend product life.
However, adding an additional layer can create challenges in terms of production and cost. To implement the new CPL, panel makers must convince smartphone manufacturers such as Samsung Electronics and Apple of its benefits.
Several companies, including Dongjin SEMICHEM, Hodogaya, LAPT, and PNH Tech, are working on low refractive index CPL technology and have already started sample deliveries and preliminary stages of cooperation with panel manufacturers. The final choice of suppliers will take into account factors such as quality, cost and existing relationships.
According to Sammobile, Samsung and LG have previously demonstrated their innovations in OLED technology. Last year, Samsung introduced Eco2 OLED panels with improved energy efficiency, which was later used in the Galaxy Z Flip 4 and Galaxy Z Fold 4. However, some Samsung users, especially of the flagships, have recently reported display issues such as pink, green, and white lines on the screens.
In parallel, Apple is working with Samsung Display and LG Display to create a bezel-less OLED display for the iPhone. This involves moving the electronic components from the frame under the screen, which requires improvements in thin-film encapsulation (TFE) and sub-panel camera technologies. While there are challenges such as potential antenna interference and durability issues, Apple is actively addressing these technical issues with the help of its partners.
The timeline for the completion and introduction of these new OLED technologies is uncertain. However, it is expected that future devices such as smartphones, tablets, and laptops may feature brighter, more energy-efficient OLED screens with extended lifespans.
