The contrast is weakened.
Contrast is defined as the maximum brightness value output by the large-screen display unit divided by the dark brightness value. When night falls, the dust on the optical components will reflect stray light, and the light on the lens cannot brighten the night. At the same time, part of the light in the bright part will be blocked by dust, so that the reflection and transmission of the light are reduced, and the brightness of the bright part is reduced. So the contrast will naturally decrease.
Color wheel descending speed
LCD splicing screen
The color wheel of the LCD screen is the main accessory for color processing, including a high-speed motor that can rotate at 7200 revolutions per minute. If there is a large amount of dust around the color wheel, it will affect the work of the color wheel, reduce or become unstable, and cause problems.
The screen brightness is reduced.
The brightness of the LCD screen is output through mirrors and lenses. If dust accumulates on the surface of the optical element, the reflectance and transmittance will gradually decrease over time, resulting in a decrease in brightness.
Blurred the photo.
LCD splicing screen
A certain degree of dust accumulates on the internal optical elements of the LCD splicing screen, which will cause the light path to change, so that the light path cannot be concentrated to the same focal point when the light path is concentrated, and the image displayed on the screen is blurred. It is generally believed that dust will only affect the appearance of the LCD, but we do not know how much dust affects the performance of the LCD. We must pay attention to dust prevention every day to ensure the service life of the product.
Four repair methods for LCD connection wall
Avoid strong impacts.
Because the LCD splicing screen contains many precision glass components and electronic components, it is a delicate product with poor impact resistance. Once the LCD splicing screen and other related parts are subject to strong impact, they will be damaged. In addition, do not put pressure on the surface of the LCD splicing screen, such as pointing to a certain part of the screen.
Keep the environment dry.
This is an important condition for the normal operation of the LCD splicing screen. The internal design of the LCD splicing screen is very good. Used in the environment, it is prone to oxidation and corrosion, causing short-circuit and other phenomena, which will bring huge economic losses to users. So we should try our best to keep the LCD splicing screen in a dry environment. If you find moisture on the surface of the screen, wipe it gently with a soft cloth before turning it on. For example, when the LCD screen is connected to the LCD screen, the LCD screen must be placed in a well-ventilated or warm place to evaporate water. If the situation is more serious, general users can ask someone to help solve it. If the water is not removed, do not open the LCD screen. If this is not done, the LCD electrodes will be corroded and the LCD panel will be permanently damaged.
Clean the crystal screen correctly.
The LCD screen is used for a long time, and it is easy to produce dust and dirt. The cleaning of LCD splicing screens is inevitable. When cleaning, you should take the correct cleaning method: Dip a small amount of glass cleaner with fiber-free absorbent cotton, lens paper or soft cloth, and gently wipe off the dust or dirt on the screen.
When cleaning, do not use organic chemical solvents, such as alcohol, coarse cloth or paper, because these things are easy to scratch and affect the appearance. At the same time, be careful not to spray the cleaning liquid directly on the surface of the screen, so that the cleaning liquid will easily flow into the screen, causing short-circuit failure inside the LCD splicing screen, causing unnecessary losses.
How much is a reasonable price for Nanping LCD screen in 2020.
Be careful when using it and avoid working for a long time.
Long-term overload work can easily overheat some pixels on the LCD screen. If the limit is exceeded, it will be permanently damaged. The pixels of the LCD splicing screen are composed of LCD. In the case of continuous full-load operation for more than 95 hours, the aging speed of the LCD splicing screen will accelerate, and even burn out. Therefore, when using the LCD splicing screen, the user should pay attention to the use time and avoid working for a long time. This not only prolongs the life of the LCD screen, delays aging, but also avoids hardware damage.
Let us see the picture brighter and brighter. The large LED screen is just like a traditional electronic product. In use, we should not only pay attention to the method of use. It is also necessary to maintain the display screen to make the large screen life of the LED display longer. There are more and more problems with the use of the large screen of the LED full-color screen. On the one hand, it is because the main manufacturers are in order to control the production cost. The process materials of the product have been reduced. Parts of some products are therefore aging in advance. On the other hand, the reason is improper usage habits of users. The latter situation is more common. The following introduces the method of maintaining the large screen of the LED full-color display to maintain the large-screen use environment of the full-color LED display. Do not let anything with humidity characteristics have humidity on your full-color LED display. If the environmental conditions are poor, such as fog, dust, fog, rain, wind and other weather, it will affect people's judgment on the LED display, and the human eye will be affected by external factors. LED display screen is a kind of microelectronic product composed of LED and driver chip. The working voltage of LED is about 5V, and the general working current is below 20 mA. Its working characteristics determine that it is extremely susceptible to electrostatic shock and abnormal voltage or current. Shocks are extremely susceptible to shocks. Therefore, we must recognize this, and give full support in production and use, and take measures to protect the led display. Power supply grounding is a commonly used protection method for LED display screens, why should the power supply be grounded? This is related to the working mode of the switching power supply.
Usually called iron box. Go through the bend. welder. The thin plate is made into a box shape by spraying and other processes, and the cost is low. But its disadvantage is that its box is very heavy. After being made into a screen, each square weighs more than 45kg, which is very cumbersome. The LED screens used in the stage performance industry are basically made of aluminum. The weight of the aluminum box is about 20-30kg/m2. Good thermal conductivity, small error, no seams. The traditional LED display box body adopts sheet metal processing method and adopts iron or aluminum plate bending and welding production technology to process and shape. Due to the large error of this processing technology itself, it is easy to deform after processing, so the error is Millimeter level, it is difficult to meet the requirements of zero stitching of the display screen, and the LED rental screen adopts the production technology of aluminum box body, which has high processing precision and high precision.
