The higher the contrast ratio of the 17 inch LCD monitor, the better, and how much brightness is app

The greater the contrast, the better, and I don't care if the brightness is 300 or 250, because you can adjust it. But don't be too bright above 350, even if the brightness is turned to the lowest. Protect your eyes, rather dark than bright.

The lifespan of the LCD display.

Compared with the radiation that CRT displays can't, liquid crystal displays have an innate advantage, and it basically has no radiation at all. For long-term computer workers, LCD monitors are very suitable for them. Although the LCD has low power consumption and no radiation, the lifespan of the LCD is quite short, only about 5 years, and the brightness will gradually decrease during use.

Compared with liquid crystal displays, CRT displays generally have a lifespan of 10 years, and the display effect will not be greatly affected.

Tips: Factors that affect the longevity of LCD monitors.

1.It is recommended to work in a normal temperature and humidity environment, as high temperature and humidity will affect the life of the LCD monitor.

2.Intense temperature fluctuations can affect the performance of liquid crystal displays, especially low temperatures that can affect brightness and response time.

It is recommended to work in a stable and clean environment, as dust can cause internal circuit failure.

3.Do not allow liquid to spill inside the monitor, turn off the power if you need to clean, spray the cleaner on a soft cloth and gently wipe again.

4.The LCD is a glass product, so it should avoid collision and vibration when moving.

5.There are multiple layers of film on the surface of the LCD display, and it is strictly forbidden to scratch with sharp objects.

6.It is strictly forbidden to disassemble the LCD display at will, and in case of failure, it must be repaired by professionals.

7.If you display a fixed screen for a long time, the brightness will decrease and the image will be retained, so it is recommended to use a screensaver.

8.If you don't use it for a long time, turn off the power to the monitor and unplug it.

That's right, the brightness is too high to ruin the eyes. Halo, myopia is easily fatigued.

But in terms of parameters, of course, the bigger the better.

You can go and experience it for yourself.

Different people have different requirements for light.

It depends on how well your eyes can tolerate light.

Don't be too bright, it's both power-hungry and bad for your eyes. The lower the better, as long as it doesn't affect the look.

There is not much suitable accurate data on the brightness and contrast of the display, only to adjust it according to the current brightness of the display.

Different types of displays, the maximum brightness is different, and the contrast adjustment changes are also quite different, so they cannot be generalized.

For new factory displays, in order to appear more vivid when selling, the brightness is usually preset to 100, and the contrast ratio is usually preset to 50, it is recommended to adjust the brightness to 75 80, and the contrast ratio can be maintained at 50.

As the display works, the brightness of the backlight source will gradually dim, and the brightness of the display can be increased appropriately.

Displays that have been used for many years, due to the dim limit brightness of the backlight source, it is recommended to replace the display with a new one if it is a user with high display requirements.

Everyone's perception of brightness and color is different, so please adjust it according to your own visual comfort, and don't rigidly adjust the display according to a certain number, but the overall standard recommendation is: looking at the monitor for a long time will not make the liver particularly tired, the brightness is appropriately low, and the contrast ratio is medium.

Structural principle: liquid crystal, liquid crystal, is a very special substance. It is both fluid like a liquid and has certain optical properties of crystals.

Liquid crystal was discovered in 1888 by the Austrian botanist Reinitzer, which is an organic compound between solid and liquid, with a regular molecular arrangement, the arrangement of liquid crystal molecules has a certain order, and this order is very sensitive to changes in external conditions, such as temperature and electromagnetic field.

Usually two glass substrates are equipped with alignment films, and the liquid crystals will be aligned along the grooves, because the alignment grooves of the glass substrate deviate from 900, the molecules in the liquid crystals are neatly arranged one by one in the same plane like blinds, and the kinematic columns of the molecules will gradually twist 900 when transitioning from one liquid level to the other liquid level, that is to say, the phase difference of the arrangement of the two layers of molecules is 900.

Generally, the most commonly used liquid crystal type is nematic liquid crystal, the molecular shape is slender rod-shaped, about 1-10nm in length and width (1nm=10am), under the action of different current electric fields, the liquid crystal molecules will be arranged in a regular rotation of 90 degrees, resulting in the difference in light transmittance, so that the difference between light and dark is produced under the effect of power on and off, and each pixel can be controlled in this principle, and the required image can be formed.

Brightness Contrast %d%a Liquid crystal is a substance between a liquid and a crystal, and it cannot emit light by itself, so the brightness of the backlight determines its brightness. Generally speaking, the higher the brightness of the LCD display, the more vivid the colors displayed and the better the realistic effect. The unit of brightness expressed in liquid crystal displays is cd m2 (lumens), and the brightness of ordinary liquid crystal displays is 250cd m2.

If the brightness is too low, the displayed color will be dark, and it will be destroyed after watching for a long time, and it will be very tiring. Contrast is the ratio of brightness, that is, in a dark room, the brightness of a white picture divided by the brightness of a black picture. Therefore, the brighter the white and the darker the black, the higher the contrast, the clearer and brighter the displayed picture, and the stronger the layering of colors.

Generally, the contrast ratio of LCD displays is 300:1, some of the better ones can reach 400:1, while traditional CRT displays can reach 500:

1。If the contrast ratio is less than 250:1, we will have a blurry feeling when looking at the screen.

For consumers who often use computers to play games or do graphics processing, they should choose LCD monitors with higher contrast. For users who have a soft spot for blockbusters, a high-brightness and high-contrast LCD display is the most suitable choice. Of course, it is not that the brightness and contrast are higher, the better, the long-term high-brightness LCD screen, the eyes are also easy to fatigue, and the high-brightness LCD display will also cause the excessive ingenuity and loss of the lamp, affecting the service life.