Technological development has made people's lives simple and rich, and there are many ways to obtain video entertainment information. I am afraid that in addition to the generations of grandparents who will watch TV on the TV, the younger generation may be more inclined to watch their favorite programs on the tablet or mobile phone. This change came so suddenly that it almost made the TV withdraw from the historical stage and became the "background wall" of the living room. But this kind of stimulation is not a bad thing. It accelerates the iteration of TV display technology. Major manufacturers are also vigorously promoting the birth of new technologies, trying to let consumers see the irreplaceability of TVs in living room entertainment. Therefore, a strong competitor of the new generation of display technology-OLED TV came into being. Since 2013, OLED panel technology has gradually matured. From the beginning of positioning high-end, to the current price increasingly close to the people, the advantages of OLED TVs have become more and more obvious. The LCD TV (LCD TV), which defeated the traditional CRT and continued to dominate the TV market for nearly 20 years, is now really going to be cast off the altar? OLED TVs are getting cheaper and cheaper. Are LCD TVs worth buying? Coincidentally, there are many friends around me who claim to be "middle class" who want to change to a good TV with high compulsion, but they are still confused for various emerging display technologies. Given that many people are currently confused about whether to choose traditional LCD TVs or OLED TVs, where is OLED TVs good? Do I have to spend more on these new technologies? Although many people seem to have a clear understanding of the difference between the two major technologies of LCD and OLED, the difference between these two technologies is not as simple as imagined. Considering that more and more people are still entangled in whether to buy OLED or LCD, today I will start from 1. Lightness, 2. Color, 3. Black performance, 4. Response time, 5. HDR effect, 6. Viewing angle, 7. The price and other technical dimensions are analyzed one by one, the purpose is to let everyone really understand what their needs are and make the most suitable decision for them when purchasing. What is the difference between LCD and OLED at the end of technology? First of all, we must know that LCD and OLED are two completely different display technologies. There is an essential difference between the two in the principle of light emission, and these "innate" differences lead to the two types of TV products "compensating for each other's strengths". In a literal sense, LCD (Liquid Crystal Display) is "liquid crystal display" technology, and LCD TV is also called LCD TV. It is a liquid crystal display technology TV that uses LED (light emitting diode) as the backlight light source. OLED (Organic Light-EmitTIng Diode) is literally understood as "organic light-emitting diode". The biggest difference between it and LCD is that it has the property of "self-luminous". The components of organic light-emitting semiconductors can "light themselves" without the need for "backlight" Source "support. Literally, many people may still not understand: What does "self-illumination" mean? How is OLED technology implemented? It doesn't matter, some insiders once made a very vivid metaphor for the difference between OLED and LCD: "OLED and LCD, one is like the sun, and the other is like the moon." Of course, OLED is the sun, because all stars are "self-luminous", so no matter what angle you look at it is bright. The LCD is more like a moon, because the planet itself does not emit light and needs an auxiliary light source to emit light through reflection and refraction. The LCD's light source is the backlight panel behind the screen, which illuminates the display through refraction and reflection. The streamlined module architecture makes OLED obvious advantages in lightness and thinness Compared with the liquid crystal technology with complicated structure, OLED display technology does not need the support of the backlight, so the liquid crystal and the backlight module are omitted. The structure is very simple, and the body can also be extremely thin, which can probably be 1 / 3 thickness. The thinnest wallpaper TV in the world can only be realized by OLED display technology at present. The thickness of 2.57mm is enough to make people dumbfounded. In addition to the thinner and lighter OLED display technology, its advantages are also reflected in the product form. The flexible and flexible characteristics of OLED can not only be applied to TVs, but in the future, smart devices may be filled with imagination. Combined with the thin characteristics of OLED, the screen can be made as thin as a piece of paper and can be bent and folded at will, which is unthinkable in the LCD era. Due to the thin and light "screen sound" this black technology can only be realized by OLED And last year, OLED TVs realized a black technology like "screen sound" that we had never heard of. This technology comes from the 2017 flagship product released by Sony-XBR-A1E Bravia 4K OLED TV. The magic of it is that the product does not rely on the sound-generating unit, but sounds through the vibration of the screen; in other words, the TV screen is equivalent to a speaker. This technology can save space inside the TV and give full play to the ultra-thin advantages of OLED without backlight. Since the structure of the liquid crystal screen is relatively complicated, the backlight layer and the liquid crystal material layer are divided, and the vibration will affect the deflection of the liquid crystal molecules. Therefore, the technology of generating sound by screen vibration can only be applied to the relatively simple and thin OLED TV. Therefore, in terms of lightness and thinness: OLED wins. Black performance: OLED wins The black level performance can also be called the black level: it refers to the degree to which the screen can be “black†when displaying the darkest color. To give a simple example in reality: students who often play games should be relatively clear. During the game reading stage, they are usually in a black screen state, and the white word "Now Loading" will generally appear at the bottom of the screen. This is the best time to test the performance of LCD and OLED black spots. Due to structural limitations, LCDs generally achieve black expression by shielding white light, so it is very difficult to display true black. Strictly speaking, LCD TVs do not bring true black. After all, the better the shielding effect, there will still be a certain amount of light leakage. Even the QLED quantum dot backlight system with a large head angle in recent years cannot guarantee no light leakage. The OLED has the characteristics of electroluminescence, each pixel can emit light independently, and the light source can be controlled spontaneously. As long as the lighting mechanism is turned off, it can bring true black. Therefore, there is no possibility of light leakage in the black field, thereby improving the contrast and image quality performance. Therefore, for gamers pursuing the ultimate experience and sense of substitution, I am afraid that only OLED TVs can meet their needs. In addition, it is worth noting that because OLED is self-luminous, the wavelength is closer to natural light, and the damage to the human eye is less; and the LCD display technology will inevitably produce blue light damage to the eyes, although the short-term viewing effect is not great. However, if there are children between 1 and 10 years old in your family, you need to properly control the time children watch TV. Response time: OLED wins When we buy computer monitors, we may often hear the word response time. In fact, the TV industry also has this parameter, but manufacturers generally do not advertise it, so they are ignored by the public. When we usually watch sports games, we will inevitably encounter the phenomenon of "afterimages", and these afterimages will frequently appear on high-speed moving objects. The response time of the screen usually refers to the speed at which each pixel of the TV reacts to the input signal, that is, the time required for the pixel to change from dark to bright or from bright to dark. The shorter the time, the faster the screen response time, the less likely to cause smear. Due to the "congenital difference" in the construction of LCD TVs and OLED TVs, no matter what means or technology LCD TVs adopt, they cannot fundamentally solve the phenomenon of afterimages. If we want to change the brightness of the LCD pixels, we must deflect the liquid crystal molecules to a certain extent; and the process of the liquid crystal molecules from receiving the driver chip command to changing the state takes a certain time, which is what we often say "response time" . We can use technical means to minimize the response time of the LCD TV. The response time of the best LCD TV is currently about 2ms. Therefore, the afterimage phenomenon of the LCD screen is destined to "cannot be eradicated" and can only be avoided as much as possible. In contrast, OLED TVs, because of the "self-luminous" property, can directly control the brightness change of pixels without having to deflect liquid crystal molecules like LCD. This makes OLED TVs far superior to LCD products in response speed, and even more than 1,000 times faster than plasma TVs. Therefore, it is basically impossible for us to see the afterimage phenomenon with the naked eye. On the expressive power of high-speed dynamic images, OLED has a relatively large advantage. Therefore, for friends who like to watch sports games and play video games, the parameter of response time must pay more attention. If you want to choose an LCD TV, it is recommended to buy products with a response time of 4ms or higher; when you choose an OLED TV, you can ignore the afterimage problem. HDR effect: no difference The first time we heard about the concept of HDR should come from a camera or a mobile phone. The full name of HDR is High Dynamic Range, that is, high dynamic range; where dynamic range refers to the range and contrast of brightness, high dynamic range has a wider light and dark brightness range and higher contrast between light and dark. To put it bluntly, it makes the bright part of the picture more bright. Bright, while the dark part is darker, making the image more impactful. TV HDR is a very different technology, the difference is in the way it changes the picture. The most important thing for TV HDR is to increase the brightness. The increase in brightness can make the picture more realistic, especially in outdoor scenes. In TV display technology, the problem to be solved by HDR is to make images with larger contrast between light and dark, so that both light and dark are clearer. The LCD TV is mainly achieved by changing the backlight and the liquid crystal molecular layer. The backlight in the bright place is adjusted up, and the dark place is turned down or simply turned off, so as to realize the adjustment of the entire backlight to achieve the best Display effect. In contrast, OLED TVs, thanks to the independent light-emitting characteristics of each pixel, each pixel can be closed to achieve pure black, which is the advantage of the aforementioned OLED TV in black field performance. Against the background of black, the contrast between light and dark will be more obvious. In short, whether it is LCD or OLED, if you want to have a good HDR effect, you must buy high-end products to experience the "standard" HDR effect. HDR TVs under 10,000 yuan can basically only "listen" Too. Viewing angle: OLED wins Usually we watch TV at home with our family. Since we are sitting in different corners of the sofa, and everyone's viewing angles are not the same, the viewing angle of the TV is especially important. In terms of viewing angle, the vertical polarizer structure of LCD display technology limits its viewing angle. Since the light source providing the liquid crystal display has a certain directivity when it is output after being refracted and reflected, the phenomenon of color distortion will occur when viewing beyond this range. Although IPS, curved screen and other technologies can improve the viewing angle of LCD display technology, there will still be some dead ends. Micro camera is the product of modern high-tech, also known as micro monitor, which has the characteristics of small size, powerful function and good concealment. Hat Camera, widely used Camera,small size Camera Jingjiang Gisen Technology Co.,Ltd , https://www.gisengroup.com
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