OLED TV stands for "organic light-emitting diode," while QLED stands for "quantum dot LED."
OLED TVs are known for their deep blacks and wide viewing angles, while QLED TVs are known for their bright colors and high contrast.
OLED TVs use a thin layer of organic materials that emit light when an electric current is applied, while QLED TVs use a layer of quantum dots that emit light when excited by a backlight.
OLED TVs can turn off individual pixels, which allows for perfect black levels and an infinite contrast ratio. QLED TVs can't turn off individual pixels, so they use a technology called "local dimming" to achieve deep blacks and high contrast.
OLED TVs are generally more expensive than QLED TVs.
QLED TVs are more energy efficient than OLED TVs.
OLED TVs are more susceptible to image retention and burn-in than QLED TVs.
QLED TVs have a longer lifespan than OLED TVs.
QLED TVs have a wider color gamut than OLED TVs.
OLED TVs are more flexible, which allows them to be made into curved and rollable screens, while QLED TVs are typically only available in flat screen