When you go to buy a TV, you always hear the complicated terminology of LEDs, OLEDs, and QLEDs. What exactly do they mean? In the end, what should you choose? 
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First, QLED is the marketing name Samsung uses to describe their newer LED TVs. They actually use traditional LCD panels. However, nano-particle filters are used between the LCD layer and the backlight to filter light to produce a more pure saturated color. You can consider this kind of panel when you have a particularly high color requirement.
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OLED TVs are TVs that can individually adjust the brightness of each pixel. A single pixel can be turned off completely to show pure black and near-endless contrast. This gives excellent image quality. Current OLED prices are not too expensive, and everyone can afford it, which can be considered when purchasing.
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LED is also known as light emitting diodes. LED TVs are traditional LCD panels that use backlighting. Recent high-end LED TVs use a filter plane that is very similar to a QLED TV, which will help create a broad color gamut. The cost-effectiveness of LED TVs is relatively high, and most people today can purchase such TVs.
Here we determine what the most worthwhile purchase is through the evaluation of different products by foreign RTS websites.
Black expression
Winner: OLED
The picture comes from the network
Comparing OLEDs with two types of LCDs side-by-side, OLEDs are far ahead. In a dark room, the cross on the OLED black uniform pattern is the only one visible. The black part of the screen does not emit any light, and it looks completely black. The QLED is even worse than the best LED in this category.
Motion blur
Winner: OLED
The picture comes from the network
When looking at different screens, you may notice that the motion picture does not react the same on every television. The biggest reason is the response time. The LCD panel takes time to switch from one color to another. The time taken for a pixel to change state causes the trajectory to follow the moving object, and if the response time is particularly bad, the action scene may become blurred. OLED TV, you can see from the photos, there is no such problem. Each pixel can change state immediately, so no path is left. For this reason, we believe that OLED TVs have almost no motion blur.
Color gamut
Winner: QLED
Compared with other televisions, the color performance of the new QLED TV is the biggest improvement. There is no other TV on the market that can match the saturation of a new QLED TV. This is the absolute strength of Samsung QLED. But this does not mean that OLED or other LED TVs are not good. In particular, OLEDs are still fairly close to 4% of QLED coverage. Despite this, QLED TVs have the best color volume and color gamut today.
brightness
Winner: LED
TVs must find a way to achieve the highest brightness they can achieve while maintaining reasonable power consumption. To do this, the TV will reduce brightness when many screens must display very bright content. Compared with OLEDs, LEDs are undeniably better. Although OLEDs can achieve brighter highlights than LEDs in actual content, they also become much darker when viewed in very bright scenes throughout the scene. For this reason, LED TVs can maintain a considerable brightness, even if they display a completely bright picture.
price
Winner: LED
In the past, OLED TVs cost an order of magnitude more than LED-based TVs. However, in the past year, their prices have also begun to decline. Now they can buy more reasonable prices for OLED TVs, sometimes even cheaper than high-end LEDs. Of course, these high-end LED TVs also include QLEDs. Although OLED prices fell in 2016, they are still high-end products. LED TVs can find a suitable price in more sizes.
in conclusion
Between different types of TVs, OLED TVs outperform LED TVs in almost every aspect. OLED's image quality and motion blur are particularly far ahead. However, Samsung's QLED did not do much in his claim to narrow the gap between the two technologies, and even in some respects it was still backwards. For most people, our advice is still: If you have a budget limit, LED TVs will be worth the money, you can find a variety of sizes. If you have a budget, OLED TVs are almost perfect. As for QLED, it is temporarily not recommended.
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Ethernet cables connect devices such as PCs, routers, and switches within a local area network.Most technicians refer to these standards as CAT5 and CAT6, respectively. Also CAT3 available. Because of this, many online stores that sell network cables use this abbreviated language as well.
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These physical cables are limited by length and durability. If a network cable is too long or of poor quality, it won't carry a good network signal. These limits are one reason there are different types of Ethernet cables that are optimized to perform certain tasks in specific situations.
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