Readers who started to contact liquid crystal display products 0 years ago, such as liquid crystal displays and LCD TVs, must be detested for the leakage phenomenon of liquid crystal display products. Even the first considerations in buying monitors and television products were that light leakage was not serious because of light leakage. The phenomenon does indeed look very "spicy eyes."
Probably, starting in 2008, whether it is LCD or LCD TVs, there was a concept called “dynamic contrast†on the market, and the contrast in the traditional sense was forced to be “static contrastâ€, which was very interesting. Originally, our understanding of the contrast of liquid crystal display products was about 1000:1 (originally even starting from 300:1), and the dynamic contrast was directly revealed from 10,000:1 (100,000 to one) or even 1,000,000:1 (one million to one. ), directly scared the consumer.
Dynamic contrast is a very easy-going technique that automatically reduces the current in the backlight when the screen is dimly detected, which in turn makes the screen darker. In particular, under the pure black screen, almost no light leakage is felt. However, once the screen needs to be lit, the “dynamic contrast†of the liquid crystal display product is immediately exposed, and the leakage phenomenon of the “spicy eyes†in the four corners of the liquid crystal display product is touched.
In summary, the dynamic contrast has been developed so far, and the improvement of the picture quality basically has no contribution, and the gradual-feeling experience that the naked eye can sense when switching between light and shade is even worse. It can be said that this technology is an outright fudge. However, this technology that is meaningless to consumers is very meaningful to TV manufacturers. It is ironic...
Why can't TV dynamic contrast be turned off?
In the early years, in order to seek profits, the price of liquid crystal display products that support dynamic contrast will be higher to highlight the value of this technology. With the continuous maturity of LCD technology, dynamic contrast has been flooded in liquid crystal display products until it is no longer noticed by consumers.
LCD technology itself can not light, the display screen needs to be achieved through the backlight system, early CCFL backlight system, now is WLED backlight system, high-end quantum dots are QD LED backlight system, but no matter what kind of backlight, LCD display products are Certain (100%) light leakage will occur. In such a situation, dynamic contrast becomes very significant to manufacturers, because this almost no-cost technology can greatly reduce the R&D cost of LCD products.
Light leakage control is a very difficult technology. Professional display manufacturers such as top-level EIZO/NEC/Mitsubishi have spent a lot of financial and material resources to study circuit boards in order to control the leakage of liquid crystal displays. The liquid crystal panels used even require LCD panels. The factory is custom-made, and only in this way can the light leakage problem of the professional-grade liquid crystal display be slightly controlled.
In other words, if you want to control the light leakage of liquid crystal display products, the cost is actually very high. However, with dynamic contrast, manufacturers can easily avoid the problem of light leakage when the black screen is pure. A large number of actual ZOL TV channels have been found. Many TV brands, especially Internet TV brands, cannot completely shut down the dynamic contrast. Even if you choose to turn off the dynamic contrast in the system settings, they are not completely turned off, but only about 50%. Why? ?
Because the dynamic contrast is completely turned off, light leakage will be completely exposed, which is very unfavorable for media evaluation products. Dynamic contrast, picture quality is not improved, the existence of significance is only saving manufacturers R & D costs.
Fork Type Connecting Terminals
Fork Type Connecting Terminals,Terminals,Connecting Terminals
Taixing Longyi Terminals Co.,Ltd. , https://www.lycopperterminals.com