Samsung Display and LG Display are exploring the potential of a new low-refractive index Capping Layer (CPL) technology for small to medium-sized OLED panels, according to The Elec. Currently, high-refractive index CPL is widely used in this sector to reduce power consumption and improve light direction. The addition of low-refractive index CPL alongside the existing high-refractive index variant could enhance light utilization, increase optical efficiency, and potentially extend the product lifespan.
However, incorporating an additional layer may pose challenges in terms of manufacturing and cost implications. To implement the new CPL, panel manufacturers need to convince smartphone producers like Samsung Electronics and Apple of its benefits.
Several companies, including Dongjin SEMICHEM, Hodogaya, LAPT, and PNH Tech, have been working on low-refractive index CPL technology and have started sample deliveries and preliminary stages with panel manufacturers. The final choice of suppliers will consider factors like quality, cost, and existing relationships.
According to Sammobile, Samsung and LG have previously showcased their innovation in OLED technology. Samsung introduced Eco2 OLED panels last year, boasting improved power efficiency, which was subsequently used in the Galaxy Z Flip 4 and Galaxy Z Fold 4. However, some Samsung users, especially flagship users, have reported display issues such as pink, green, and white lines on their screens recently.
In parallel, Apple is collaborating with Samsung Display and LG Display to create a bezel-less OLED display for iPhones. This involves shifting electronic components from the bezel under the screen, requiring advancements in Thin Film Encapsulation (TFE) and Under Panel Camera technologies. While challenges such as potential antenna interference and durability concerns exist,Apple is actively addressing these technical issues with the help of its partners.
The timeline for completing and implementing these new OLED technologies is uncertain. However, it is anticipated that future devices like smartphones, tablets, and laptops may feature brighter, more power-efficient OLED screens with extended lifespans.