Television has a history of hundreds of years of development. Regardless of how the times change, television still occupies an important place in the family life. The lack of television in the living room always feels lack of something. With the constant evolution of television, the standards we have in the selection of TVs are also changing, and various commercial advertising terms are not clear. It does not matter, the following lists some of the words that often appear. If you master them, you are not afraid of being cheated.
First of all, we must make clear the concept of these words.
LCD is the abbreviation of Liquid Crystal Display, which is the LCD TV, many people think that LED TV is a LCD TV, in fact, this argument is not rigorous, LED refers to the organic light-emitting diode, the LCD panel itself can not emit light, need the backlight as a light source LED TVs are LCD TVs that use LEDs as their backlight source. Before that, the backlight sources used mainly CCFLs, which are cold cathode fluorescent lamps, and have now been replaced by LEDs.
QLED is the abbreviation for Quantum Dot Light Emitting Diodes. It refers to the quantum dot light emitting diode. It has the same self-luminous characteristics as the OLED. Although there are a lot of quantum dot TVs on the market today, they only make a fuss about the backlight and they are still essentially LCD TVs. Quantum dot LED display technology based on electroluminescent properties, that is, QLED, is still in the lab development stage. However, it is undeniable that quantum dot televisions use blue LEDs to irradiate quantum dots to excite red and green light, and at the same time produce the white backlight needed for liquid crystal displays. Quantum dot particles can be accurately controlled due to their size and distribution. The color and purity of the light emitted by the dots are also more refined, so that the color gamut coverage and color accuracy of LCD TVs are greatly improved. The NTSC color gamut can easily exceed 100%, and the price is lower than OLED TVs.
4K
4K refers to the image resolution. In May 2012, the International Telecommunication Union released the "Ultra High-definition Television UHDTV" standard recommendation, calling the screen a physical resolution of 3840×2160 (4K×2K) and above. Ultra HDTV, 4K TV is its abbreviation. The physical resolution of 4K TV reaches 3840×2160, which is 4 times of Full HD (FHD.1920×1080) and 8 times of HD (HD.1280×720).
4K television has rapidly become popular in a short period of time. Especially for large-size segments, it is difficult to buy non-4K TVs. Even if 4K content is still lacking, 4K is the only choice.
The screen panel screen panel can be roughly divided into two kinds: soft and hard. Their main difference is the arrangement of liquid crystal molecules. The soft-screen liquid crystal molecules are arranged vertically, and the hard screen is horizontally arranged. The corresponding screen panel also has major manufacturers. For example, in the hard screen LG IPS panel, the more representative types of the panel in the soft screen are Sharp ASV, Samsung S-PVA, AU Optronics MVA, etc., and the camp is even larger.
Many TVs using the IPS panel "profess to promote" hard-screen perspective is not easy to cast color and other advantages, clearly shows that they use VA soft screen is not much, and soft screen will appear after the water ripple, giving the feeling is Hard screen is better than soft screen, a soft screen is to give up buying, soft screen so terrible?
Let's first tell you the fact that Sony's high-end flagship TVs Z9D, X9300E and other models use soft screens, which is enough to show that the screen and the quality is not directly related to the quality, as for the IPS hard screen in the viewing angle Advantages can only be seen in some unusual viewing angles. If you are sitting on a sofa and watching TV, the gap between hard screen and soft screen is not big.
The quality of the screen is not determined by software and hardware. Although there are certain differences in the production process, there is no difference in performance between the two. The most significant impact on image quality is the backlight module hidden behind the screen and Image quality processing technology.
Backlight As already mentioned above, the liquid crystal panel itself does not emit light, so the presence of a backlight source is required, and it has two types, a direct type and a side type. The direct type is to place the LED light emitting crystal directly under the liquid crystal panel. The lateral type is to put the LED crystal on the edge position around the screen, and the light guide plate transmits the light to each area of ​​the screen.
HDR
HDR is an abbreviation of High-Dynamic Range. If you like photography, it is no stranger to this word. Compared with ordinary images, HDR images can bring more dynamic range and image details. In simple terms, they are brighter and brighter, darker, and darker. The contrast between bright and dark is more vivid.
When you purchase a TV, you will find that HDR has become very popular. TVs with thousands of thousands of dollars have this function. It seems that the threshold for HDR is not high. In actual fact, HDR is not so simple to achieve.
Implementing HDR requires increasing the brightness range of the picture in order to increase the brightness contrast of the picture so as to obtain a wider range of colors. At present, some flagship TVs such as Samsung, Sony, and Panasonic can reach a peak brightness of over 1,000 nits, and the average TV brightness is around 300 nits. The difference is very wide. To achieve ultra-high brightness, the TV must improve its backlight control, which is not easy to achieve. So although there are many HDR TVs, but many of them do not rely on the adjustment of the hardware level backlight technology, HDR effect is only made by software, the effect is not obvious.
In addition HDR format standards are not uniform, the more common are Dolby Vision, HDR 10, HLG, etc., Dolby Vision specifications are the highest, it can be seen as a high-end version of HDR 10, but most of all, HDR film There are few sources, and the HDR effect is difficult to experience.
The wide-gamut color gamut is a range of colors that can be represented by a range of colors. There are many sets of standards for the color gamut. The TV industry often uses the NTSC color gamut. It is a color gamut spatial standard defined by the American Television Standards Committee. The color gamut value is generally about 74%, wide color television can reach about 90%, quantum dot TV is more than 100% easily.
The wide color gamut means that the TV can display richer colors. As the color increases, the picture becomes brighter and closer to the true color, but the wide color gamut does not mean that the quality of the TV is necessarily good, affecting the quality of the picture. There are many factors, and color gamut is just one of them. Good image quality should be fully considered.
MEMC
MEMC is an abbreviation for Motion Estimate and Motion Compensation. Direct translation is motion estimation and motion compensation. This technology can improve the inherent smearing and jitter of LCD TVs, especially when watching some high-speed motion pictures, such as action movies. , ball games, etc. If you only watch some ordinary TV programs at ordinary times, there is no need to insist on this function.
Artificial intelligence is basically a vocabulary of the quality level. The evaluation of a TV is also based on sound quality, hardware configuration, system UI, and content resources. This year, many TVs have started playing "artificial intelligence" cards. In the aspect of content presentation and voice control, the content can be accurately pushed through big data, and voice control can replace most of the key operations. During the actual use, you will find that many of these functions are not used. At present, artificial intelligence is not worth looking for.
Whether it is in the e-commerce platform or the physical store, when buying a TV, you may encounter the above vocabulary and may be able to help your purchase.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, etc. on TV boxes, smart TVs, smart TV software, etc. Answering questions.
LCD/LED/QLED/OLED
LCD is the abbreviation of Liquid Crystal Display, which is the LCD TV, many people think that LED TV is a LCD TV, in fact, this argument is not rigorous, LED refers to the organic light-emitting diode, the LCD panel itself can not emit light, need the backlight as a light source LED TVs are LCD TVs that use LEDs as their backlight source. Before that, the backlight sources used mainly CCFLs, which are cold cathode fluorescent lamps, and have now been replaced by LEDs.
OLED and TFT-LCD structure comparison
OLED is the abbreviation of Organic Light-Emitting Diode, which translates to organic light-emitting diodes. The structure and light emitting principle of OLED are too complex, so it is not necessary to introduce the space. It is only necessary to know that the OLED display technology is completely different from the current mainstream LCD display mode. It does not require a backlight, uses a very thin organic material coating and a glass substrate. These organic materials emit light when current passes through them. The advantages of OLED are mainly high contrast, fast response, wide viewing angle, etc., which can completely solve the inherent leakage, tailing and other phenomena of LCD TVs, and now OLED TV camp is growing, LG, Sony, Panasonic, Skyworth and other manufacturers have Corresponding models, prices have continued to decline, and the price gap with high-end LCD TVs gradually narrows, you can consider buying. QLED is the abbreviation for Quantum Dot Light Emitting Diodes. It refers to the quantum dot light emitting diode. It has the same self-luminous characteristics as the OLED. Although there are a lot of quantum dot TVs on the market today, they only make a fuss about the backlight and they are still essentially LCD TVs. Quantum dot LED display technology based on electroluminescent properties, that is, QLED, is still in the lab development stage. However, it is undeniable that quantum dot televisions use blue LEDs to irradiate quantum dots to excite red and green light, and at the same time produce the white backlight needed for liquid crystal displays. Quantum dot particles can be accurately controlled due to their size and distribution. The color and purity of the light emitted by the dots are also more refined, so that the color gamut coverage and color accuracy of LCD TVs are greatly improved. The NTSC color gamut can easily exceed 100%, and the price is lower than OLED TVs.
4K
4K refers to the image resolution. In May 2012, the International Telecommunication Union released the "Ultra High-definition Television UHDTV" standard recommendation, calling the screen a physical resolution of 3840×2160 (4K×2K) and above. Ultra HDTV, 4K TV is its abbreviation. The physical resolution of 4K TV reaches 3840×2160, which is 4 times of Full HD (FHD.1920×1080) and 8 times of HD (HD.1280×720).
4K television has rapidly become popular in a short period of time. Especially for large-size segments, it is difficult to buy non-4K TVs. Even if 4K content is still lacking, 4K is the only choice.
The screen panel screen panel can be roughly divided into two kinds: soft and hard. Their main difference is the arrangement of liquid crystal molecules. The soft-screen liquid crystal molecules are arranged vertically, and the hard screen is horizontally arranged. The corresponding screen panel also has major manufacturers. For example, in the hard screen LG IPS panel, the more representative types of the panel in the soft screen are Sharp ASV, Samsung S-PVA, AU Optronics MVA, etc., and the camp is even larger.
Let's first tell you the fact that Sony's high-end flagship TVs Z9D, X9300E and other models use soft screens, which is enough to show that the screen and the quality is not directly related to the quality, as for the IPS hard screen in the viewing angle Advantages can only be seen in some unusual viewing angles. If you are sitting on a sofa and watching TV, the gap between hard screen and soft screen is not big.
The quality of the screen is not determined by software and hardware. Although there are certain differences in the production process, there is no difference in performance between the two. The most significant impact on image quality is the backlight module hidden behind the screen and Image quality processing technology.
Backlight As already mentioned above, the liquid crystal panel itself does not emit light, so the presence of a backlight source is required, and it has two types, a direct type and a side type. The direct type is to place the LED light emitting crystal directly under the liquid crystal panel. The lateral type is to put the LED crystal on the edge position around the screen, and the light guide plate transmits the light to each area of ​​the screen.
Side-entry backlight
Under the trend of ultra-thin TVs, side-entry backlighting has become more and more popular. Direct-type backlights do not dominate the thickness of the camera body, but it is not that the direct type is not good, and many high-end televisions use the direct-type backlight. This is because the direct type backlight is easier to achieve the partition control, so that the brightness of the local backlight can be adjusted according to the requirements of the display image, so that the bright place is brighter and the dark place is darker. Side-entry TV can also achieve intelligent backlight adjustment, this type of TV can be given priority in the purchase. In addition, many low-end TVs also use a direct-type backlight. This is a simple structure that uses a direct-type backlight and does not work on the backlight. HDR
HDR is an abbreviation of High-Dynamic Range. If you like photography, it is no stranger to this word. Compared with ordinary images, HDR images can bring more dynamic range and image details. In simple terms, they are brighter and brighter, darker, and darker. The contrast between bright and dark is more vivid.
When you purchase a TV, you will find that HDR has become very popular. TVs with thousands of thousands of dollars have this function. It seems that the threshold for HDR is not high. In actual fact, HDR is not so simple to achieve.
In addition HDR format standards are not uniform, the more common are Dolby Vision, HDR 10, HLG, etc., Dolby Vision specifications are the highest, it can be seen as a high-end version of HDR 10, but most of all, HDR film There are few sources, and the HDR effect is difficult to experience.
The wide-gamut color gamut is a range of colors that can be represented by a range of colors. There are many sets of standards for the color gamut. The TV industry often uses the NTSC color gamut. It is a color gamut spatial standard defined by the American Television Standards Committee. The color gamut value is generally about 74%, wide color television can reach about 90%, quantum dot TV is more than 100% easily.
The wide color gamut means that the TV can display richer colors. As the color increases, the picture becomes brighter and closer to the true color, but the wide color gamut does not mean that the quality of the TV is necessarily good, affecting the quality of the picture. There are many factors, and color gamut is just one of them. Good image quality should be fully considered.
MEMC
MEMC is an abbreviation for Motion Estimate and Motion Compensation. Direct translation is motion estimation and motion compensation. This technology can improve the inherent smearing and jitter of LCD TVs, especially when watching some high-speed motion pictures, such as action movies. , ball games, etc. If you only watch some ordinary TV programs at ordinary times, there is no need to insist on this function.
Whether it is in the e-commerce platform or the physical store, when buying a TV, you may encounter the above vocabulary and may be able to help your purchase.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, etc. on TV boxes, smart TVs, smart TV software, etc. Answering questions.
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