No edge flat led panel1/20/2024 OLEDs have perfect black level because they can individually turn off each pixel. That's why most TVs use VA panels, since having a higher contrast ratio improves the overall picture quality. VA-type panels have excellent contrast, while IPS panels have poor contrast, resulting in blacks that look gray. The large majority of LED and QLED TVs use VA panels, and IPS panels are usually found with LG models. There are also different types of LCD panels: IPS and VA. Local dimming can also help reduce any blooming. However, some TVs have uniformity issues that cause blooming around bright objects, but this can vary between units. Most TVs use VA panels, which are generally known to have a high contrast ratio that produces deep blacks, and most high-end models have a local dimming feature that further deepens black level. In terms of contrast ratio and black uniformity, QLEDs and LEDs are very similar, since they use the same technology with a backlight. You can read about the differences between VA and IPS panels here. However, picture quality can change a lot between QLED and LED models, and there are even different types of LED-backlit LCD panels that have unique characteristics. Picture quality between different OLED models doesn't differ much, as they each offer similar picture quality. LED TVs use the same backlight as QLEDs, but they don't have the quantum dot layer. To make things even more confusing, LG is releasing quantum dot TVs, marketed as QNED. Whatever these TVs are called, they all fall into the same quantum dot category. Other manufacturers like Vizio and Hisense use quantum dot technology, but don't use QLED in their marketing. A few companies, like Samsung and TCL, officially label their TVs as QLED. QLED is just a marketing term to signify that the TV uses a quantum dot layer. OLED panels are completely different, as the pixels are self-lit and can turn themselves off when needed, allowing the TV to produce perfect blacks. LED and QLED TVs are similar to each other as they each use LCD panels with LED backlights the only difference is that QLED TVs use a quantum dot layer that allows them to produce a wider range of colors.
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