(Author: Zhang Yu Jing)
The current TV panel technology is mainly divided into plasma, LED LCD, and new OLED. Among them, OLED is the key target of manufacturers, LCD sales are the highest, and plasma is the heart of most TV reviewers.
So which of the three panels is the best? For consumers who are planning to buy TV, should they wait for OLEDs, or buy one before the plasma dies, or choose among the numerous LED LCDs? The technology website CNET has written an article on this issue a few days ago:
Let's start with some technical terms.
LCD TVs range in size from tens to 90 inches, and every TV manufacturer has its own LCD product. And all "LED TVs" are actually LCD TVs, except that they use LEDs as backlights. So the LCD in the text can also be seen as an LED.
OLEDs are currently priced at $9,000 and only have a screen size of 55 inches. The only brands available are Samsung and LG.
Samsung and LG also make plasma TVs (unfortunately, Panasonic has withdrawn), and the screen size of such products is between 42 inches and 65 inches.
In addition, you may have heard of the concept of "4K" super clear, but this refers to only the resolution. Currently only LCD can achieve 4K resolution.
The following is a comparison of specific projects:
Light output (brightness )
Win: LCD, OLED (to some extent)
Failure: plasma
OLEDs are brighter than LCDs, and vice versa, depending on how you calculate them. Because LCDs use backlights, their brightness is also determined by the backlight. The pixels on the OLED panel are self-illuminating, so there are limits (the same is true for plasma, but not as bright as OLED). So on a pure white screen, the LCD is brighter; and if it is a white rectangular pattern on a black screen, the "white window" of the OLED is brighter than the LCD. The latter situation is closer to conventional TV content, which means that OLEDs look brighter when watching movies and TV shows at home.
It is worth mentioning that although the plasma is not as bright as the other two panels, brightness is not everything. Anti-glare or anti-reflective coatings can make a big difference in the case of watching TV during the day.
Black level
Win: OLED
Failure: LCD
Runner-up: Plasma
Because OLED TVs can turn off their own pixels, their black levels are nearly perfect (that is, almost no light is emitted from the screen). Plasma can also control its own pixels, but it can't achieve absolute black (always illuminate). From a technical point of view, the LCD TV can turn off the backlight to achieve absolute black, but this is not possible, because the audience can not see the image. Local dimming will help, but in practice, OLED is still the best. And this problem is also related to contrast.
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