The Primary RGB Tandem structure applied to the fourth-generation OLED TV panel organizes the light source into four stacks by adding two layers of blue elements and independent layers of red and green elements. It improves maximum brightness by increasing the amount of light produced by each layer compared to the previous structure.

One of the biggest TV developments at CES 2025 was a new fourth-generation 'four-stack' OLED panel developed by LG Display, an independent wing of LG that provides the raw display panels for LG Electronics and other TV makers.

LG has unveiled the next generation of its OLED technology, which it says is brighter and more energy efficient than ever.

LG has unveiled the latest generation of its OLED TV panels, and the tech could be a genuine game-changer. The fourth-gen OLED panels are 33% brighter than predecessors, delivering brightness of up to 4,000 nits – a first for OLED tech.

Also featuring in Panasonic’s impressive upcoming Z95B, the new panel achieves a peak brightness of 4000 nits – marking a 33 per cent increase over its predecessor – through a redesigned four-layer structure, dubbed the Primary RGB Tandem structure.

LG Display has unveiled its 4th generation OLED TV panel with a major brightness boost along with some interesting claims and bragging rights.

LG Display's new 4th-generation OLED panels are 33 percent brighter than previous generations, while also being more power-efficient.

LG Display’s latest OLED technology revolutionizes the viewing experience with brighter, sharper screens and enhanced immersion through the integration of AI.