Which Is Better, Direct Type Or Side Type LED TV?

When many consumers have not fully understood what is LED backlight LCD TV (hereinafter referred to as "LED TV"), the debate about which is better between direct-type LED backlight technology and edge-type LED backlight technology has been Very uproarious. Miss Lin, who lives in Tianhebei, Guangzhou, told reporters that she just moved to a new house and wanted to buy an LCD TV. After browsing some information on the Internet, she decided to buy an LED TV. But last weekend, she was dumbfounded when she went to the store. The same is that LED TVs have both direct-type and side-type backlight technologies, and the "explanation" of the two technologies by promoters of different brands makes her feel that they are both. It makes sense and it is difficult to choose.

According to experts from the National Radio and Television Product Quality Supervision and Inspection Center, there are currently three main ways to apply LED light source technology in the field of LCD TVs: direct-lit three-primary-color RGB-LED light source, direct-lit white LED light source and side-lit white LED light source. "The direct-lit RGB-LED light source technology is absolutely the first in the comprehensive display advantages, but the price and cost is also the highest, and it is not likely to be popularized in the market. Currently, the LED TVs sold on the market generally use the direct-lit white LED light source and the side-entry type. White LED light source products. Samsung and SONY use side-entry white light LED technology, while Sharp and Toshiba use direct-light white light LED technology."

 Direct type: Emphasizes excellent picture quality

Companies that use direct-type LED technology believe that the advantages of direct-type LED technology in screen control are better than edge-type LED technology, and the price of edge-type LED TVs is unrealistically high. "Compared with the two methods, the performance of the'direct type' is more perfect for the picture quality." Taking a 55-inch LED TV as an example, the direct type product distributes more than 3000 LED lights evenly on the back of the panel, so that the backlight can be Evenly transmitted to the entire screen, the details of the picture are more delicate and lifelike. In the side-entry type, more than 400 LED lights are installed on the frame of the panel so that the light source is illuminated from the side. Although this can minimize the thickness, but because it reduces the number of LED lights by nearly 7 times, it is easy to reduce the brightness of the screen in the form of "X" (that is, the surrounding area is brighter than the center position).

In addition, the direct-lit LED TV also divides the LED backlight into a number of cells. When displaying black, directly turn off the light of the corresponding LED area to show a perfect black. Therefore, companies using direct-lit LED technology believe that the direct-lit LED backlight can present images more accurately and show excellent color and light-dark contrast effects.

Side entry: Emphasizes ultra-thin energy-saving leadership

The slimmer volume has become the biggest highlight of the side-mounted LED TV. According to the reporter's understanding, the thickness of the thinnest side-type LED TV on the market is only 2.99cm, while the thinnest product of the direct-type LED is 5.5cm.

Is "lightness and thinness" important? Some experts in the home appliance industry said that consumers care more about the "lightness and thinness" characteristics of electronic products, because this is an obvious improvement in product quality, and it is the ultimate intuitive embodiment of a brand and enterprise's R&D capabilities and manufacturing technology. Every inch of product appearance reduction means technological improvement. In addition, side-mounted LED TVs are relatively more energy-efficient. Taking a 52-inch LED TV as an example, the power consumption of the side-type LED is only 186.5W, while the power consumption of the direct-type LED is as high as 304W.

Testing agency: the overall difference is not big

Whether the direct type is better or the side type is better seems to be an unsolvable question.

An LED technology test conducted by the National Radio and Television Product Quality Supervision and Inspection Center gave an interesting answer. We have conducted a comprehensive test and comparison of the brightness and chromaticity parameters of the same brand of side-type LED TVs and direct-type LED TVs. From the results, the direct-type and side-type LED TVs have uniform picture color performance and brightness. The index levels of the three parameters of sex and contrast are slightly different, but the overall difference is not big.

For the development of LED backlight technology, some people in the industry believe that "there is a long way to go."