Since the liquid crystal display was introduced to the market, it took approximately 4 to 5 years before and after it took the place of CRT technology to become the next-generation mainstream standard. The OLED technology's TV products were first launched in September 2013, and there have been nearly three in the development. Year's time. However, in the period when liquid crystals replaced CRTs, all the vanes were liquid crystals that replaced CRTs. In the nearly three years that OLED TVs were marketed, this new technology did not affect the mainstream market. The appearance of the relative liquid crystal products still has no revolutionary changes. It should be noted that the LCD TVs of the year had more dramatic changes than the size and form of CRT TVs. The users also really realized the LCD TVs. Therefore, the way OLEDs have to go is still very good. long.
LCD TV made a qualitative change in form and "footprint"
In spite of this, we cannot deny the potential of OLED as a sub-era display technology. Its unique physical characteristics are almost "recruiting the tricks" for LCD technology. The biggest problem of OLEDs currently comes from the fact that the yield rate of large panel cutting is not High cost issues. Next, we will come to the bottom of the liquid crystal technology exposed "flaws", perhaps after reading you will understand why high-end users of OLED display technology products such rush.
Response time has always been unable to get rid of the flaw
Unlike LCD TVs, LCD monitors have more static scenes, such as text work, image processing, and typography. Only the gaming experience requires a high response time. In contrast, the nature of television viewing video means that it is always under dynamic scenes, so the severe response time of LCD technology is not suitable for dynamic scenes in principle. The so-called surgery industry specializes in the category of LCD panels. The corresponding time of selling the popular IPS panel dynamic is not very ideal. The TN panel product has different degrees of distortion in the color accuracy. Even if it is the TN panel screen with the most favorable response speed, it can not completely get rid of the problem caused by the response time. problem.
LCD TV response time defects
Today, there are still many users complaining that the LCD TV screen is not smooth enough, especially for some low-end TV products. To put it a little deeper, the problem of response time is even more pronounced for the new internet brands that lack TV manufacturing experience. So? Why does LCD technology have a slow response time?
The physical structure of the LCD screen can't be eradicated due to the destined response time.
The liquid crystal technology cannot fundamentally solve the image sticking phenomenon by any means or technology, because the liquid crystal molecules deflect and arrange in a time-consuming manner, and the liquid crystal molecules deflect different materials in different ways. The liquid crystal molecules receive the drive chip instructions to change the state. The time required for this process is what we often call "response time." In other words, no matter how advanced drive technology can't change the fact that liquid crystal molecules need deflection work, the response time is fast or slow, but it's impossible. Zero, so the residual image of the LCD screen is doomed to be eradicated.
No matter how mature the technology is, light leakage still exists
The liquid crystal material itself does not emit light, need to use the backlight (LED light-emitting diodes) to display normally, in the past using CCFL backlight system, and in recent years the popular LED backlight system, whether it is the CCFL backlight in the past, the current LED backlight or just The QLED QD backlight system that is showing off is inevitable that there will be light leakage. The OLED has the characteristics of electroluminescence. This kind of hard advantage is compared to the “excellent photoluminescence of the liquid crystalâ€. Therefore, no light leakage occurs in the black field, thereby improving the contrast and image quality.
The physical characteristics of OLED self-luminescence are the main reason. The black display is the same as the shutdown (TV LOGO can prove that the TV is turned on). The layering of the screen, the transparency of the color, and the details are all unmatched by the LCD. LCDs that work with backlights cannot achieve pure black display, and their quality performance is limited.
OLEDs have fully realized electroluminescence without the need for backlighting. Therefore, colors can be displayed "primarily". The relationship between the liquid crystal LED light-emitting diodes, the screen is obviously affected by the backlight, just like the screen surface is covered with a layer of white yarn, affecting the quality of performance. In other words, the presence of the backlight not only affects the dark field performance of the LCD product, but it also has a negative impact on the picture from beginning to end. The response time is a flaw in the dynamic fluency of liquid crystal technology, while the backlight is a flawed image quality.
There is no preliminary analysis of the war OLED market
LCD technology is not the best choice for television technology from the beginning, but it is more suitable for marketization, and the success of marketization can not let us ignore the shortcomings of liquid crystal technology itself, in which the response speed and the impact of the backlight system on image quality is The most obvious two major injuries. In fact, if compared with the recognized sub-era display technology OLED, the liquid crystal technology is still far more than these, the gap between OLED products and LCD products is not the gap between heaven and earth, in recent years, QLED (QDs Display technology) to regain one back for the LCD camp.
Many people mistakenly believe that QLED QDs are a new technology. In fact, QLEDs are only a new type of backlight system. Display products based on QLED technology still belong to the category of liquid crystals. Its advantage lies in the intensification of WLED color performance of LCD products. The problem is that the two stubborn diseases of light leakage phenomenon and smear phenomenon still exist. After all, the quantum dot technology still belongs to the "photoluminescent" liquid crystal field products. It is the use of technology to weaken the leakage phenomenon of TV products, and it still cannot escape light leakage. The intrinsic defects of the liquid crystal itself, the defect is better covered, the defect is still a defect, the current level of technology, this defect can not be eliminated, and the second generation quantum dot technology will also be "electroluminescence" It is not yet known whether the "quantum dot LCD" from the backlight will be able to regain its status in the camp.
Currently, the market is still dominated by LCD TVs. When the market structure can be changed, it is difficult to predict even now. The "electroluminescence" principle technology replaces the "photoluminescence" principle and technology. As time goes by, the long-running Quantum Dots OLED battle will eventually break down one day, but the time span for this war will be very large.
I believe that in the initial large-scale penetration of liquid crystal products into the market initially, there will be a certain "chaos period" after all, compared to the current concentration of technology, and not the disparity between the original when the LCD TV to replace CRT TV, so the protracted war is certain Will be hit, the reason why I write this article is also hope that our consumers can recognize the current LCD is at what stage, in the purchase of new technology products when the eyes are polished, do not be blinded by many "smoke bomb" eyes . At this stage, LCD TVs are not without potential to be purchased. An excellent LCD TV can be reused for more than five years. OLED products are currently only due to the high cost of large panel cutting, and they are only products in the high-end products. , so LCD products still have a dominant position in the market.