Two technologies have revolutionized television displays. They are OLED and QLED . Frankly speaking, OLED is a brand new television display technology, while QLED is an upgrade of the existing LED display technology (LED backlit LCD).
LG is the predecessor of OLED technology. It supplies OLED panels to other TV manufacturers such as Sony , Panasonic , Philips , etc.
OLED stands for Organic Light Emitting Diode. Essentially, OLED TVs use an organic material in the panel that glows when electricity flows through them. On the other hand, a conventional LED TV display panel consists of an LCD screen that is illuminated by small LED bulbs behind the LCD panel. The main difference between a conventional LED and an OLED is that the OLED illuminates individual pixels, while conventional LED panels illuminate the entire screen. The ability to control screen brightness pixel by pixel helps OLED displays achieve greater contrast and superior color fidelity. With OLEDs, true black can be reproduced because the pixels can be turned off completely, which is not possible on LED TVs.
In addition, OLEDs have made a big leap over conventional LEDs in terms of response time. OLED displays are said to be 1,000 times faster, which means there will be no noticeable blurring in fast-moving images. If you want the best possible image, you should choose an OLED display. They show true colors with perfect blacks. But they cannot be very bright. Their maximum brightness is 1000 nits, while competing QLEDs can exceed 2000 nits.
The problem of peak brightness is still solvable because 1,000 nits is still bright enough. The bigger problem with OLEDs, however, is color burnout. If you watch a TV channel or content with a static element such as, say, a logo, that logo “burns out” on the screen. This is burnout. Burn-in occurs when the same content with a static element is viewed for hundreds of hours. While this problem is unlikely to occur in normal TV use, if you watch only one channel or play only one game for long hours, there is a chance that OLED TV will show screen burn-in in the static content area.
Samsung is the only major TV manufacturer that has refrained from offering TVs with OLED panels. Samsung is probably not confident in the durability of OLED, despite the fact that OLED offers better picture quality. Instead, the company has developed its own display technology: QLED .
QLEDs are quantum dot LEDs, which are nothing more than microscopic molecules (nanoscale semiconductor crystals). They have good absorption and emission of light, which makes them suitable for creating bright images. The biggest advantage of QLEDs, besides very good image quality, is that they can be much brighter than OLEDs. Some of the premium QLEDs on the market have a brightness of 2000 nits. This means that no matter how bright your room is, you can still enjoy content on a QLED TV without worrying about reflections on the screen.