Samsung and LG to eliminate burn-in in OLED displays

Displays made with organic technologylight emitting diodes (OLED) have significant advantages over liquid crystal (LCD) displays. Positioned as a new generation of OLED displays, matrices have a wide color gamut and a faster response speed than LCDs. An OLED matrix uses LED elements that have a limited lifespan to increase brightness. As a result, OLED screens fade over time: the panel becomes dimmer and afterimages appear even when the screen is off.

Solve this basic problem of OLED technology already inIn the near future, South Korean companies Samsung and LG are leading the parallel development of Two-Stack Tandem technology, which doubles the thickness of the light-emitting layer and increases the brightness of the screen. The new technology increases the number of light-emitting layers to two, consisting of red (R), green (G) and blue (B) elements. As a result, the lifespan of OLED displays will be extended. The technology is suitable for devices that are often used in open areas with bright lighting and is likely to be primarily used in the screens of smartphones and tablets.

It is assumed that Samsung Displaydevelops an OLED display with a maximum brightness of 1700 nits for installation in the Galaxy S22 smartphone. According to an insider, the company has completed development of a "over 1500 nits" display for Samsung Electronics. Competitors from LG Display are already using Two-Stack Tandem technology to produce OLED displays for cars. According to a company spokesman, LG has the know-how to mass-produce OLED TVs with large diagonals and the use of the new technology of the doubled light-emitting layer.

Also to increase the brightness of OLED matrices inSamsung Display is working on quantum dot organic light-emitting diode (QD-OLED) technology, which uses only blue elements for backlighting, as opposed to RGB elements in a standard OLED panel.