More than a decade ago, liquid crystal display technology began to invade the market with many technologies that were ahead of CRT TV at that time. Because of its small size, low energy consumption, and high value in various aspects, consumer groups like LCD products. Plus, the ultimate achievement of LCD technology products has become the sole overlord in the market in the past decade.
Today, it seems that it should be the law of the ultimate decline. After more than a decade of occupying the market, liquid crystal technology is bound to be defeated. This kind of finalization is nothing but a matter of time. From the current market trend, it seems that OLED There is a tendency to pull the LCD down the altar and achieve a hegemony. When the CRT product was so large that it was eliminated, what screen defects in LCD technology were threatened by OLED?
Since the listing of liquid crystal display products, it took about 4 to 5 years before and after the replacement of CRT technology to become the next-generation mainstream standard. The TV products of OLED technology were first listed in September 2013, and nearly three have been developed so far. Year's time.
However, during the period when LCD replaced CRT, all the wind vanes at that time were liquid crystals replacing CRTs. In the nearly three years of OLED TVs, this new technology has not affected the mainstream market. The root cause is OLED. There is still no revolutionary change in the appearance of LCD products. It should be known that LCD TVs have changed dramatically in size and form compared to CRT TVs. Users have also realized LCD TVs, so OLEDs still have a long way to go. long.
Despite this, we can't deny the potential of OLED as a display technology of the next era. Its unique physical characteristics are almost "trick" for LCD technology. At present, the biggest problem of OLEDs comes from the fact that the yield of large panel cutting is not The cost problem caused by high. Next, we will come together to reveal the "flaws" of liquid crystal technology. Perhaps after reading it, you will understand why high-end users are so eager for OLED display technology products.
Defects that response time is always unable to get rid ofLCD monitors are different from LCD TVs. Monitors are more static scenes, such as text work, photo processing, and typesetting. Only the game experience requires a higher response time. In contrast, the nature of television viewing video means that it is always in a dynamic scene, so the serious response time of liquid crystal technology is not suitable for dynamic scenes in principle.
The so-called industry has specialization, the type of LCD panel is also the same, the market-oriented popular IPS panel dynamic time is not very ideal, TN panel products have different degrees of distortion in the color standard, even if the response speed is the most advantageous TN panel screen It is also impossible to completely get rid of the smear problem caused by the response time problem.
Today, there are still many users complaining that the LCD TV screen is not smooth enough, especially for some low-end TV products. To be more in-depth, the response time problem is more prominent for new Internet brands with little experience in TV technology manufacturing. So why does liquid crystal technology have a slow response time?
No matter what means or technology, liquid crystal technology can't fundamentally solve the image sticking phenomenon, because the liquid crystal molecules need to be deflected and arranged, and the liquid crystal molecules deflect different materials in different ways. The liquid crystal molecules receive the driving chip command to change state. The time required for this process, which is what we often call "response time". Generally speaking, no matter how advanced the drive technology can not change the fact that liquid crystal molecules need to be deflected, the response time is fast or slow, but it is impossible. Zero, so the shadow of the LCD screen is not destined to eradicate.
No matter how mature the light leaks, technology still exists.The liquid crystal material itself does not emit light, and needs to be backed up by a backlight (LED light emitting diode). In the past, the CCFL backlight system was adopted, and in recent years, the LED backlight system is popular, whether it is the past CCFL backlight, the current LED backlight or just The QLED quantum dot backlight system that is on the rise will inevitably leak light. The OLED has the characteristics of electroluminescence, and this hard advantage is better than the "photoluminescence of the liquid crystal", so there is no light leakage under the black field, thereby improving the contrast and image quality.
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The physical characteristics of OLED self-illumination are the main reason. The black field display is like the shutdown (TV LOGO can prove the TV boot) effect, the layering of the picture, the transparency of the color, the detail presentation, etc. are all unmatched by the LCD. The LCD, which needs to work with a backlight, cannot achieve pure black display, and the image quality is limited.
Backlight system seriously affects image quality
OLEDs have fully realized electroluminescence without the need for backlighting. Therefore, the color can be displayed "natively". Because of the relationship between the LED and the LED, the picture is obviously affected by the backlight, just as the surface of the picture is covered with a layer of white yarn, which affects the picture quality. In other words, the presence of the backlight not only affects the dark field performance of the liquid crystal product, but also has a negative impact on the picture from beginning to end. The response time is a flaw in the dynamic fluency of the liquid crystal technology, while the backlight is a flaw in the picture quality.
The LCD TV's picture is disturbed by the backlight, which leads to a dimming of color performance.
No preliminary analysis of the war OLED marketLCD technology is not the best choice for TV technology from the beginning, but it is more suitable for marketization, and the success of marketization can not let us ignore the shortcomings of LCD technology itself. The response speed and the impact of backlight system on image quality are The most obvious two major injuries.
In fact, if compared with the recognized second-generation display technology OLED, the damage of liquid crystal technology is far more than this. The gap between OLED products and liquid crystal products is not as great as that in the sky and the earth. In recent years, there have been QLEDs (quantum dots). Display technology) to pull back a city for the LCD camp.
Many people mistakenly believe that QLED quantum dots are a new technology. In fact, QLED is just a new type of backlight system. The display products based on QLED technology still belong to the liquid crystal category. Its advantage is to strengthen the poor performance of liquid crystal products WLED. Problems, and the two major ills of light leakage and smearing still exist. In the final analysis, quantum dot technology is still a product of the "photoluminescence" liquid crystal field. It uses technology to weaken the light leakage phenomenon of the TV product itself, and still cannot get rid of the light leakage. The inherent defects of the liquid crystal itself, the defects are covered up, and the defects are still defects. As far as the current state of the art, such defects cannot be eliminated, and the second generation quantum dot technology will also be "electroluminescence". Mode, it is not known whether the "quantum dot liquid crystal" that has got rid of the backlight can pull back a city for its camp.
Nowadays, LCD TVs are still the mainstay in the market. When the market structure can be changed, even now we are still unpredictable. The principle of "electroluminescence" replaces the principle of "photoluminescence". The problem of time, the long-lasting quantum dot OLED battle will eventually be divided one day, but this time war will be very large.
The author believes that in the initial large-scale penetration of LCD products, there will be a certain "chaotic period". After all, compared with the current centralized technology, there is no such gap between LCD TVs and CRT TVs. Therefore, the long-term battle is certain. I will write this article. I also hope that our consumers can recognize the current stage of LCD. When you buy new technology products, keep your eyes open and don’t be blinded by many “smoke bombsâ€. .
At present, LCD TVs are not without potential to buy. An excellent LCD TV can be used for more than 5 years. OLED products are currently limited in high-end products due to the high cost of large panel cutting. Therefore, LCD products still dominate the comrades in the market.
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