Samsung Display said on Wednesday it has announced the "QD-OLED Penta Tandem" technology brand and completed trademark registration. Penta Tandem is a five-layer organic material light-emitting structure applied to QD-OLED panels for premium monitors and TVs. The company launched the new brand to highlight the technology's distinct value.

QD-OLED expresses colors using quantum dots that respond to light, using blue OLED, the most energy-intensive in visible light, as the light source. Samsung Display has changed the blue OLED stacking structure from four layers to five since last year. It applied the latest organic materials to complete high-definition, high-efficiency and high-brightness QD-OLED.

Penta Tandem has 1.3 times higher luminous efficiency and twice the lifespan than the previous year's product with a four-layer structure. Increasing the number of stacked organic materials raises light efficiency. It can deliver higher brightness at the same power, or the same brightness at lower power. The maximum screen brightness of products using Penta Tandem is 4,500 nits for TVs and 1,300 nits for monitors, based on 3 percent OPR. Among current 31.5-inch UHD monitors, products certified as True Black 500 are equipped with Samsung Display's Penta Tandem panel.

Samsung Display will expand Penta Tandem across all product sizes this year. It plans to supply it to flagship products of key customers. It applied the technology to 27-inch UHD products last year and to 31.5-inch UHD and 34-inch WQHD products early this year. It is expected to expand to 49-inch dual QHD products in the second half. For TVs, it has been installed since last year in the top-end products of major customers' OLED lineups.

Yong-wook Jeong (정용욱), head of the strategy marketing team at Samsung Display's large display business division, said organic material stacking technology is not simply about increasing the number of layers, but also requires know-how on which materials to stack and in what thickness and combination. The Penta Tandem technology, which he said consolidates about 5 years of QD-OLED mass production experience since 2021, will be the best option for customers seeking to prove QD-OLED's premium status, he said.