LG Display OLED earns 100% dimming consistency verification

LG Display announced that all of its large-sized OLED panels for TVs and monitors have received a 100 percent dimming consistency verification from UL Solutions. The company said this is the first such certification in the industry.

Why It Matters: Dimming consistency measures how well a display maintains brightness as the highlighted area on screen becomes smaller. Higher consistency means more accurate brightness control, clearer contrast, and better color separation.

In testing, a reference area at the center of the screen was gradually reduced in size. LG Display said its OLED panels maintained the same brightness performance throughout, resulting in a 100 percent dimming consistency rating.

By comparison, LCD-based panels saw dimming consistency drop from as high as 83 percent to as low as 43 percent as the test area shrank. LG Display attributed the result to OLED’s pixel-level light emission. Each pixel emits its own light, allowing more precise brightness control and clearer color boundaries.

LCD and RGB Mini LED panels rely on larger backlight blocks. As brightness shifts across these blocks, light bleeding or halo effects may occur, especially when displaying bright objects against dark backgrounds.

LG Display also highlighted its latest OLED TV panel using Primary RGB Tandem 2.0 technology, which stacks red, green, and blue light layers independently. The panel reaches peak brightness of up to 4,500 nits and a reflectance level of 0.3 percent, according to the company.

With independent verification now in place, LG Display is reinforcing its position in the large OLED panel market.