Tech - News
The Differences Between OLED And QLED TVs Explained
The pixels in OLED panels are self-lit instead of having an LED backlight like an LCD panel, so they have bright colors and dark blacks. This means that any pixels that are not required to produce a color can remain switched off, leaving a pure black behind, whereas LCD blacks can look a little gray or washed out because of the need for backlighting.
QLED TVs combine a liquid crystal layer with an LED backlighting system and add a quantum dot layer (the Q in QLED) to the panel to produce more vivid colors than regular LCD or OLED displays. While OLED panels can wear out over time, with the blue colors prone to degrading faster than the red and green colors, the QLED panels offer a longer lifespan.
Some OLED TVs are now adding a quantum dot layer to their designs to have the same effect as QLED TVs. Though the addition of new white sub-pixels and a blue self-luminescent layer is a significant step forward, QD-OLED panels are self-lit and don't have a dedicated layer of white LEDs behind them — meaning peak brightness won't be the same as QLED TVs.
Leading QLED TV makers, on the other hand, are adding Mini LED backlighting to have a greater number of areas that can have their brightness dimmed in order to improve contrast with nearby pixels lit up in colors. This helps them compete with OLED panels, even though the contrast still doesn't quite match.