Which is better LCD and OLED? Comprehensive analysis of advantages and disadvantages
- May 29, 2018 -

     

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LCD+ Quantum Dots

Which is better LCD and OLED? Comprehensive analysis of advantages and disadvantages

Quantum dots are a technique that can improve the color and color tone of LCD displays. Semiconductor nanocrystals can absorb specific spectra, which usually depends on their size. This property can be used/create better colors such as red, green, and blue, which will give the user more saturated colors.

Quantum dot technology has recently been hotly sought after by the market, and even has the strength and OLED this latest technology Pimen. However, quantum dot technology currently exists only in high-end LCD TVs, but it is believed that it will gradually become popular over time.

OLED screen

Which is better LCD and OLED? Comprehensive analysis of advantages and disadvantages

OLED full name Organic Light Emitting Diodes, each pixel itself will emit light without the need for a separate backlight or color filter. And each OLED pixel can be assigned three colors of red, green and blue, and now there are manufacturers adding yellow, but the principle is the same.

Due to the special properties of OLEDs, it is not necessary to cover the light source like the LCD when displaying black, and only the pixels need to be extinguished to not emit light. And that's why OLED displays bring true "black". OLED's black color is very deep, and its contrast is extremely high. At the same time, it can even produce amazing effects when compared with elements such as white.

OLED technology first appeared in the laboratory in 1987, and has now become a very popular technology in the field of smart phones. Because OLED screens are one layer less than LCD screens, one-time thickness control is even thinner, and this is especially important for mobile devices. For TV products, whether to choose OLED products depends on the user's preferences. However, we believe that the slimness of OLEDs is not a decisive advantage for LCD TVs.

One-to-one comparison

Due to the difference in basic properties, we can look at the direct comparison between two different principles of imaging technology, giving users a more intuitive experience.

Black level: OLED wins

The black level refers to the extent to which the screen can show "black" when displaying the darkest color. Since technologies such as LCD, DLP, or projection rely on filtering or blocking white light, it is very difficult to display true black. In fact, it can be said that the LCD screen cannot bring true black at all. After all, the shielding effect is no better, or there will be some light leakage. On the other hand, due to the principle of self-luminescence, OLEDs can bring true black by turning off the lighting mechanism.

Contrast: OLED wins

Contrast refers to the difference between the brightest white and the darkest black, while the LCD has an advantage in brightness (especially in HDR mode), while the OLED has the darkest black. In general, OLED displays generally have higher contrast because the advantage of the black level will amplify the difference.

Perspective: OLED wins

Perhaps the best IPS screens are comparable to OLED screens, but most LCD screens are not as good as IPS (especially TVs and smart phones), so in addition to the top IPS screens, Compared with OLEDs, LCD panels have slightly inferior viewing angle performance. In front of OLED TVs, whether the audience is sitting at that angle, they can see the content on the screen with high quality.

Color gamut: OLED wins

From the aspect of paper parameters, the advantage of OLED in color gamut is not obvious, mainly because the LCD panel now introduces quantum dot technology. Basically the best LG OLED TVs and Samsung's top quantum dot LCD TVs are comparable in color gamut performance.

But usually only the best LCD TVs are comparable to OLED TVs, so overall the color gamut is better than OLEDs.

Brightness level: LCD wins

Since LCD TVs typically use separate backlighting, they generally provide better brightness. In reality, the best LCDs and OLEDs have a difference of about 400 NIT in brightness. Overall, LCDs are superior in brightness level. You know, higher brightness will make the screen have better visual effects outdoors or in the daytime room.

HDR

HDR mode can increase the brightness by 1000 to 10000 NIT, and the HDR-enabled OLED TV can match the brightness of the LCD TV at this time. However, some Sony LCD TVs can increase the brightness to 1000 to 1300 NIT, so overall, the brightness of LCD TVs is higher.