As we all know, there are currently three main types of display technologies in the color TV market: LCDs (General LCDs), Quantum Dots, and OLEDs. Of course, LCDs with the highest market coverage are common LCDs, but they are also the most mature technologies. However, they are limited by the material properties of ordinary LCDs. There is room for greater progress. Today we talk about quantum dot display technology and emerging solid color technology.
Quantum dots display in the past two years can be said to be a boom, under the layout of TCL, Samsung led the world's color TV big coffee, quite "the Yangtze River after the waves push the wave" trend, positioning flagship high-end products, and the old brand Korean OLED Compared to quantum dots, are they more competitive? OLED TV with pure black, high color gamut (easy to reach 100% NTCS or more), response speed, viewing angle, saturation, contrast and many other parameters than LED LCD TV outstanding and widely praised, but due to the vacuum plating process The cost is high (including equipment investment and material consumption). Although terminals are formed in the market, consumers still have to “pay the bill.†Quantum dots, by virtue of their unique light-emitting display principles, break the “color gamut and cost and brightness are The balance of contradictions, the global No.8 scientist Professor Peng Xiaogang once said that "quantum dots may be the best luminous materials ever discovered by human beings." How does quantum dot display promote the rapid development of China's color TV industry?
Quantum dot display is a display technology based on high-tech materials that are reconstructed at the atomic and molecular level by chemical methods. According to quantum dots, they are stimulated by electricity or light to change their diameters, thereby emitting high-quality monochrome of various colors. Light, quantum dot size continuously adjustable, can achieve blue to green, to yellow, to orange, to red emission, so the color is accurate and pure. If the color effect is calculated according to the highest BT.2020 standard, Apple's mobile phone is only about 50%, which means that the general color display does not come out, but quantum dots can achieve 100% color gamut, compared with the current ultra-high definition Blu-ray standard for high The requirements of the color gamut echo with each other, restoring all the colors we can perceive.
Quantum Dot TV TCL XESS X2
The new generation of inorganic three-color quantum dot display materials is only one ten-thousandth of the volume of organic light-emitting materials, achieving a breakthrough in color processing from micron to nanoscale. The advantages of a new generation of quantum dots can be summarized as "high, pure, long" three aspects. "High" is the high color gamut, color gamut coverage rate of 110% NTSC; "Pure" is pure color, color purity is increased by about 58.3% than the average LED, accurate display of natural colors; "long" is the color for a long time, a new generation Ultra-thin quantum dots are stable inorganic nanomaterials, which can ensure the color does not fade for a long time and the color lasts for 60,000 hours.
Quantum Dot TV TCL XESS X3
The ultra-high definition Blu-ray standard is the "standard" for color TVs, smart TV boxes and other display devices. It proposes 4K, 10Bit, BT.2020, HDR, and 60P respectively for resolution, color depth, color gamut, dynamics, and frame number. Requirements, quantum dot performance in color to meet the 10Bit high color depth, BT.2020 color gamut requirements, and from the perspective of 4K HDR, the brightness dynamic range of the LCD requirements for the brightness of more than 1000nits / black bit below 0.05nits, quantum Point technology has a unique advantage, it can make the TV brightness effectively increased by 30% -40%, which can greatly improve the contrast, the contrast between bright and dark in the scene becomes more apparent, effectively enhance the quality effect.
In addition to the advantages in color, quantum dot display technology is applied in the color TV industry. Its processing technology has a low-cost product line, low energy consumption, high use of raw materials, environmental pollution, high pass rate and other advantages.
Regardless of the display effect, environmental protection issue or cost, quantum dot display technology (QD TV) is currently a viable solution for the high-quality color TV industry. What is more noteworthy is that the quantum dot display technology at this stage is also In its infancy, this means that it has unlimited space for development. If the current quantum dot display technology or (television) has opened the industry 4.0 era, then the next industry 5.0 or 6.0 is even more worthy of attention. .
After more than ten years of development in solid-color technology, LCD TVs have become more and more networked and intelligent today. Emerging technologies are emerging and application services are increasingly abundant. However, in the most important aspect of quality, LCD TVs do not seem to have been available in recent years. Breakthrough new technologies have emerged. The simple color gamut enhancement technology on the market seems to be wonderful. It allows you to see how the color gamut has been improved from the digital sense, even beyond 100%. However, it is actually not as beautiful as the publicity. Color distortion still exists. So, there is no color gamut enhancement technology to solve this problem?
Recently, the top TV manufacturers in the country have introduced a liquid crystal television equipped with solid color technology, which can maximize the color gamut and maintain the true picture quality. Let's take a look at how this is done.
In this first give everyone a basic knowledge of the application of electronic display, electronic display devices are based on an important optical principle - additive color mixing method. That is, the color lights of the three primary colors (red, green, and blue) are added in different proportions, and most colors can be mixed. In other words, the colorful screens we see, such as mobile phones, tablets, and TVs, are actually mixed by these three primary colors.
In order to accurately image the electronic display device, the CIE (International Standards and Lighting Committee) specified in 1931 that the CIE-RGB primaries system has been used as a global standard. The standard stipulates the three primary color standards for the global electronic display devices, ie, the red, green, and blue (B), RGB, and blue (B) wavelengths that specify the three primary colors of the RGB system are 700 nm, 546.1 nm, and 435.8 nm, respectively. ). When the three primary colors of the display device have good optical consistency and converge to their respective standard wavelengths, the picture formed by color mixing is closest to the theoretical state, that is, the best performance of the liquid crystal television picture.
In the history of LCD TV picture quality improvement, researchers have made a lot of efforts. In order to improve the color performance of LCD TVs, R&D personnel based on the nature of passive light emission of LCD TVs started with backlights and introduced a wide color gamut backlight and quantum dot backlights. They used red and green fluorescent materials and red and green quantum dot materials, respectively. The liquid crystal module provides backlight with a wider color gamut, which greatly enhances the color gamut of the LCD TV. However, these two technologies fail to improve the color consistency of the primary colors. That is, the wavelengths of the three primary colors of red, green, and blue cannot reach 700 nm. , 546.1nm, 435.8nm or concentrated to this, so no matter how high the color gamut, television screen performance is still not up to standard, until the emergence of solid color technology.
So what is solid color technology? What is the principle of pure color technology to improve the quality of pictures?
Pure color technology is a new generation of color enhancement technology that enhances color purity on the basis of achieving a wide color gamut. With the advantages of more accurate colors and more realistic images.
Before we explore the principles of solid color technology, let us understand the two methods of traditional wide color gamut enhancement.
One is a fluorescent material solution. The backlight is a LED lamp that emits blue light, and then smears a red-green fluorescent material to emit red, green and blue primary colors. The other is a quantum dot technology. The backlight is also a blue LED capable of emitting blue light. Lamp beads, blue light emits red and green light after excitation of the quantum dot material. The biggest drawback of these two color gamut enhancement methods is that the red, green, and blue primary colors ultimately emitted are not pure, because they do not purify the red, green, and blue primary colors in the process of enhancing the color gamut, so the three primary colors of red, green, and blue are emitted. The light is not pure. The following figure shows the schematic of the two color gamut promotion methods.
The solid color technology can effectively solve the problem of impure red, green and blue light emitted by the LCD TV backlight. The solution is to add a layer of light nanomaterial between the wide color gamut backlight and the liquid crystal module. The light nano material is After a special special design, it is a miniature particle with a diameter of about 1nm, which absorbs the stray light emitted by the backlight source and enhances the purity of the three primary colors of red, green, and blue. The result is a more accurate representation of the color of the screen and a true picture. This is the principle of solid color technology.
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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