LG Solves The OLED Brightness & Efficiency Issue Through Two-Stack Tandem Structure

LG claims that it has succeeded in solving the issues with Blue OLED tech to make the 'Dream OLED' panel, which is brighter and more efficient.

The Two-Stack Tandem structure will fix the low brightness and low efficiency of Blue OLED

The OLED (Organic Light Emitting Diode) panel is famous for its high-fidelity image quality, infinite contrast, and quick response time. However, the OLED panel isn't free from flaws and cannot compete with regular LCDs when it comes to brightness. Of course, there are more problems like image burn-in but the low brightness is one of the most common issues, which even the best quality OLED panels suffer from.

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It looks like LG has found the solution to solve this problem. As reported by ETNews, LG has solved this problem through the 'Two-Stack Tandem' structure that helps the OLED panel achieve higher brightness & efficiency than usual. This is achieved via a hybrid structure of 'phosphorescent' and 'fluorescent' materials for the Blue OLED, which solves the root cause of the common brightness and low-efficiency issue of the OLED panel.

An OLED panel is made up of organic materials that help each pixel produce its light. There are Red, Green, and Blue OLEDs for reproducing the respective colors. While the red and green OLEDs are easier to produce using phosphorescent materials, the blue OLED faces this challenge due to its shorter wavelength. This forces the manufacturers to use fluorescent, which is typically four times less power-efficient than the phosphorescent. Not only does this introduce higher power consumption but less brightness.

As per an industry official, LG

As phosphorescent is approximately 100% power-efficient, the red and green OLEDs can turn 100% of the power into light while the fluorescent converts just 25% of total power to light. This not only produces dimmer light but also consumes more energy and