The so-called strict name of the LED TV is "LED backlight LCD TV", which refers to the LCD TV with LED as the backlight. It replaces traditional fluorescent tubes with LED light sources. LED TVs have outstanding advantages such as higher quality pictures, longer theoretical life, more energy-saving, more environmentally friendly manufacturing processes, and thinner LCD panels. However, not all LED TVs have the above advantages. Consumers must turn on when buying. big eyes.
The most prominent advantages of the first choice LED TV are clearer picture, wider color gamut coverage and higher color reproduction. This is one of the main reasons why LED TVs are more expensive than ordinary LCD TVs. In addition, the LED TV only uses LED as the backlight source, which does not necessarily improve the image quality. It must be backed by good image quality processing circuits and technologies, otherwise there will be no improvement in image quality.
Consumers can let shopping guides connect to the same signal source when buying, it is best to compare high-definition signal sources for viewing, if the resolution is similar, it is not even better than ordinary LCD TVs, which proves that this LED TV is only Its name. In addition, consumers can ask the shopping guide to adjust the TV screen to no signal or blue screen to watch. If the brightness of the four corners and the center of the TV is uneven, or there is light leakage around the screen, it means that the manufacturer's LED TV technology is very Mature, the most basic picture quality circuit processing technology is not done well, and its LED TV quality is more predictable.
Second, look at energy saving. The power consumption of LED TVs should be lower than that of ordinary LCD TVs. If the power consumption of LEDs is not comparable to ordinary LCD TVs, consumers should not buy them easily.
Again, look at the technology and configuration. One of the most important core technologies of LED TV is whether it can have backlight partition control. Having this technology can ensure that the TV has better performance in picture quality, lower power consumption and longer service life. In addition, the resolution and processing speed of the TV screen depends on the chip. The choice of LED depends on whether it has a 1 + 1 chipset and DOT reduction system. If the chip processing speed is slow or it is a single-line chip, it will cause the picture to be played during the playback process. Not smooth, unable to achieve point-to-point high-definition playback, let alone the future full-range high-definition playback standard. The identification method is: adjust the brightness and contrast of one of the parameters in the menu under the playback of different signal sources. You will find that the parameters of the two different signal sources are different. If they are the same, it means that the TV is processed by a single chip. In addition, from the point of view of high-definition audio and video playback, whether LED can play high-definition formats such as high-definition video VC1, H264, high-definition audio DTS, LPCM, etc., which is also one of the important standards for identifying the advantages and disadvantages of LED LCD TVs.
Then, look at the brand. LED LCD TVs have only developed since 2007, and only a few brands in the world have truly mastered the core LED technology. Most of the so-called LED TVs of most manufacturers are foundry or hasty component production lines. The technology is seriously immature and there are many technical defects unknown to consumers.
Relevant experts warn consumers that when buying LED TVs, they must focus on key links such as picture quality and sound quality. Do n’t be attracted by the manufacturer ’s additional product features or gifts, because we buy TVs, not functions other than TV products. And giveaways.
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