LG Display's large organic light-emitting diode (OLED) received certification from global testing and certification firm Intertek, verifying that it reproduces the color and brightness intended by the original creator with accuracy.
LG Display said on the 22nd that all of its large OLED products used in monitors and TVs earned Intertek's "color and brightness accuracy" (Perfect Color and Brightness Accuracy up to 500 lux) certification, a world first. Five hundred lux refers to a brightness level similar to that of a typical home or office.
The certification quantitatively evaluates how accurately a display reproduces the color and brightness intended by the original creator in a typical viewing environment. Previously, specifications such as the gamut of reproducible colors or maximum luminance (screen brightness) were mainly used as picture-quality standards. In this certification, Intertek measured and quantified the degree of color and brightness change at specific positions on the actual screen.
LG Display's OLED panel recorded 100% color accuracy, 100% brightness accuracy, and color crosstalk free at the same time. One hundred percent color accuracy means it reproduces the same color regardless of test pattern size while maintaining screen brightness. One hundred percent brightness accuracy means it achieves the same brightness even when the pattern size changes. Color crosstalk free means pixels express their own inherent color without interference from surrounding areas.
LG Display said these results are possible because OLED is a self-emissive structure in which each pixel emits its own light. OLED operates with pixel dimming, in which millions of pixels independently control brightness. This structure reduces light bleed and color interference, making it advantageous for accurately expressing bright and dark areas of the screen, as well as small and large areas, respectively.
In contrast, liquid crystal displays (LCDs) control a backlight by zones. Because they rely on backlight blocks larger than pixels, light can bleed into adjacent areas. LG Display said LCD products measured in the same way fell short of 100% in color and brightness accuracy. In high dynamic range (HDR) content, such as starry night skies or fireworks where bright and dark areas appear simultaneously, the luminance of areas that should be expressed brightly was measured lower. Even on some premium LCD TVs, a color crosstalk phenomenon occurred, in which the colors of objects on the screen were distorted depending on changes in backlight color.
LG Display is emphasizing that the certification numerically proves OLED's picture-quality accuracy. With the growth of over-the-top (OTT) services and high-definition content consumption, the ability to reproduce color and brightness that consumers perceive in actual viewing environments is becoming a key factor in premium display competition.
Lee Hyun-woo, head of LG Display's large panel business unit, said, "This was an opportunity to objectively verify that OLED accurately reproduces the picture-quality values consumers need—color and brightness—as intended by the original creator," adding, "We will strengthen our market leadership by clearly conveying to global customers the value of premium picture quality that only OLED can deliver."