What determines the quality and performance of an LCD TV?

One is the LCD panel, the second is the quality and arrangement order of the backlight tube, and the third is the circuit board, that is, the color processing circuit. IPS hard screen panel is favored by the big congregation! Long life, low power consumption is trustworthy!

It's okay to watch blockbusters with LCD TVs,But it's hard to deal with documents,It's difficult to browse the web perfectly,The text is blurred,The corners are not sharp,Although the screen is big enough,It looks the same effort,This phenomenon appears,There are two main reasons。

1) The gray scale gap has a huge impact.

256 gray scale output map, if the PC is connected to the TV, there will inevitably be a 13% gray scale loss And the LCD TV is different, its gray scale range is 16-235, when the signal is received 16, the LCD TV will restore it to white; When signal 235 is received, a full white screen is displayed. The input equipment of TV, such as cable TV signals, DVD players, etc., also output 16-235 grayscale signals. If the LCD TV receives a signal lower than 16, it will be considered dry and will not be displayed; If a signal higher than 235 is received, most LCD TVs can only be clipped, that is, they are still treated as 235 signals.

To put it simply, 0-15 all show pure black, 236-255 all show pure white, and the transition in the middle is all lost.

2) The resolution point spacing is different.

This means that if you connect the above two products to a PC at the same time, the single-screen display content of the monitor can be up to four times that of a TV, and the display font size is smaller, and the image display is more detailed.

The core display device of TV and display is LCD panel,In terms of display technology and principle,There is no difference,But the panel of LCD TV is different from liquid crystal at the beginning of production。 We all know that the fineness of the LCD panel display screen can be measured by the pixels of the picture,TV because the user is not close**,So the pixel interval is large,So the picture is relatively rough,Therefore, the text display is not clear。

TV is mainly used for dynamic pictures,So for the direction of its optimization,Naturally, it tends to be displayed dynamically,And the display is different,Its main thing is**static picture,So the direction of optimization is static display such as text,Although the low-end display is not how carefully optimized,But the process scheme has already been formed,This is incomparable to LCD TV。

Changhong Plasma is the champion of televisions.

The question of whether dynamic contrast is practical has actually existed since the advent of dynamic contrast. The so-called contrast is the most basic definition of the ratio of the white brightness to the black brightness of the display, that is, the so-called raw contrast. The so-called dynamic contrast refers to the contrast value measured by the liquid crystal display in some specific situations.

Many manufacturers have improved the backlight tube control circuitry so that it can dynamically adjust the brightness of the backlight tube according to the precision of the picture content, so that the minimum display brightness of the backlight tube can reach a lower level in full black, in exchange for higher dynamic contrast. In order to increase the attractiveness of products, major manufacturers have made a fuss about dynamic contrast and are vying to launch products with higher dynamic contrast.

In games and movies, because there are more dark pictures, the LCD equipped with dynamic contrast technology can reflect the layering of the picture and show the details. The higher the dynamic contrast, the better the detail display and the stronger the sense of hierarchy.

The argument against the higher the dynamic contrast, the better, is that dynamic contrast technology can indeed distinguish the layers and highlight the details in the dark picture. However, the higher the dynamic contrast ratio, the better, 3000:1 vs. 5000:

1. There is no difference in practical application, or in other words, the difference is not visible, it is unwise to blindly pursue ultra-high dynamic contrast, and too high dynamic contrast will also cause color distortion and visual fatigue.

First of all, we must affirm the advantages of dynamic contrast technology, but I also have reservations about whether the higher the dynamic contrast, the better. The main reason is that the identification of the dynamic contrast of various manufacturers is not uniform, and some products have the problem of false standards, in addition, for ordinary users, the difference in the size of dynamic contrast is indeed not easy to see.

The audio-visual effect of TV, according to other components such as LCD panels and chips, is the effect that affects vision and hearing. LCD TV contrast (contrast) is defined as: the ratio of the brightest (white) and darkest (black) brightness at the same point, high contrast means relatively high brightness and the brightness of the color.

Contrast is the weakness of LCD display technology,The backlight of LCD TV is continuously emitted,And the LCD panel cannot completely block the light,Therefore, it is very difficult to achieve a completely black picture,This will inevitably affect the richness of the display color level。 Contrast is a parameter that directly reflects whether the LCD TV can reflect the rich color gradation,The higher the contrast,The better the layering of the restored picture,The sharper the image,The clearer the image。 If the contrast is not enough, the picture will appear dull and lack expressiveness.

For LCD TVs,The common contrast nominal value is also divided into two types: original contrast and dynamic contrast,Generally, the dynamic contrast value is 3-8 times the original contrast value。 Hope it helps.

Hello answer, it's a pleasure to serve you, I've seen your question. Due to the large number of inquiries now, I will answer them one by one and query and summarize the data for you, so please be patient. Please do not close the order too early, and provide more effective information in order to better answer you, thank you for your understanding and support!

Hello, it's a pleasure to serve you, I've seen your problem. Due to the large number of inquiries now, I will answer them one by one and query and summarize the data for you, so please be patient. Please do not close the order too early, and provide more effective information in order to better answer you, thank you for your understanding and support!

In addition,As an indispensable entertainment device in the family,The external design of a smart TV,That is, the overall appearance of the performance also determines the aesthetics of the bedroom or living room。 The controls on the screen bezels of the Mi TV 40-inch and LeTV S40 Air are not bad. However, Xiaomi TV40Inch adopts integrated design and glossy injection molding process,When the screen is perfectly embedded, the entire screen and the outer frame are integrated,The unique arc design at the edge also makes the edge of the entire bezel quite smooth,Compared with LETVS40 AirFull of fashionable design。

Hope it helps! Have a great day! If you think it is helpful to you, please give it a thumbs up!

There is a certain correlation, yes.

The quality of LCD TV mainly depends on three aspects:One is the LCD panel、The second is the quality and arrangement order of the backlight tube、The third is the circuit board, that is, the color processing circuit。

At present, the world's main LCD panel manufacturers are Samsung, LG, Fujitsu and other manufacturers. But when consumers buy LCD, almost all manufacturers say that their brands use these three best manufacturers, but in fact, many manufacturers do not use these screens, how can consumers distinguish between good screens and bad screens?

First, you can let the shopping guide play out the LCD menu,**The brightness value in the menu,Because the LCD TV will be darkened after a long time,This will definitely affect the future **effect,And now there are many low-priced LCD manufacturers on the market,The brightness value is at least 70,Generally, the brightness of a good LCD panel is about 30,Remind consumers to open the menu to see the brightness value when buying LCD。

Second, look at whether the LCD screen has white dead pixels, which can generally be observed on the screen with relatively high brightness, once you see the dead pixels, it proves that this LCD screen must be an inferior screen. After reading the quality of the screen, it is recommended that consumers ask the shopping guide,Which manufacturer is used in the backlight tube,Generally, the backlight tubes used in the market are imported Philips backlight tubes,You can't ignore the order of the backlight tubes。 Because the market generally adopts a cylindrical arrangement, but the brightness of this arrangement is uneven, and the utilization rate of light energy is not high; Many foreign brands are arranged in U-shaped tubes, so that the brightness is uniform and the life is longer.

Finally, we must see what kind of color processing circuit each manufacturer uses,Now the most advanced technology on the market is Sony's Guixiang engine technology,LG's XD engine,Skyworth's V12Engine technology and magic painting six primary color processing technology,Consumers at the scene**Demonstrations of shopping guides,Through the demonstration comparison of the left and right screens,You will definitely find that the picture effect after applying these technologies is significantly better,Buy TV in the end depends on the image clarity。 No radiation、No flicker is the first feature of LCD color TV,When buying LCD color TV, we should focus on the type of LCD screen and brightness、Contrast、Technical indicators such as resolution and viewing angle。

I personally recommend LG.