Don't worry, before learning how to use and maintain the LCD screen correctly, it is of great benefit for us to understand the working principle of the LCD screen correctly in the future.
The traditional CRT display mainly relies on the electron beam emitted by the electron gun in the picture tube to shoot the phosphor inside the display screen. Under the intentional interference of the artificial magnetic field inside the display, the electron beam will deflect at a certain angle, scan the phosphor in the target unit and display different colors.
TFT-LCD adopts the principle of backlight, takes the lamp as the backlight, and controls the light through the auxiliary optical module and the liquid crystal layer to achieve the ideal display effect. Liquid crystal is a regularly arranged organic compound, which is a substance between solid and liquid. At present, nematic thin column liquid crystal with molecular arrangement is generally used, which is most suitable for manufacturing liquid crystal displays. Liquid crystal itself cannot emit light. It mainly changes the molecular arrangement of liquid crystal to display images by generating electric fields through voltage changes.
The liquid crystal panel is mainly composed of two pieces of sodium-free glass, and the interlayer is composed of polarizer, liquid crystal layer and color filter. The polarizer and color filter determine how much light can pass through and what color light is produced. Pour the liquid crystal between two well-made planes to form a liquid crystal layer. There are many grooves on these two planes. The grooves on the separation plane are parallel, but the grooves on the two parallel planes are perpendicular to each other. Simply put, if the grooves on the back plane are arranged vertically, then the front plane is arranged horizontally.
The arrangement of liquid crystal molecules between two planes will form a state of gradually twisting 90 degrees along the Z axis. The backlight, that is, the light emitted by the lamp tube, passes through the backlight plate and the reflective film on the back of the LCD screen to generate uniform backlight light, which will be distorted by the liquid crystal on the Z axis after passing through the back layer, so that it can pass through the plane of the front layer. If a voltage is applied to the liquid crystal layer, an electric field will be generated, and the liquid crystal molecules will be rearranged, so that the light cannot be distorted and cannot pass through the plane of the front layer, thus blocking the light.
Second, the habit of using LCD screen correctly
After understanding the working principle of LCD, let's understand the correct usage habits of LCD.
1. Don't use the screen saver.
Liquid crystal screens rely on the molecular arrangement of liquid crystals to control light transmission. Every image change means a change in molecular arrangement, just like a switching action of a power switch. As we all know, the frequency of power switch is frequent, even if the switch is not damaged, it is inevitable that the switch will age, resulting in slow response or even failure of the switch, which is fatal to the LCD screen! Therefore, if you don't want the laptop screen to age prematurely, try not to let the LCD switch on and off frequently when not in use.
Speaking of which, what do you think of? Yes! This is a screen saver! For the laptop LCD screen, the very popular screen saver on the desktop is extremely harmful poison! ! Screensavers came into being because the green screen of the early IBM PC displayed the same content for a long time, and it was easy to leave the displayed content after the screen was closed, which was not conducive to the confidentiality of data and even affected the life of the display, so screensavers came into being. But now the manufacturing technology of the display has been improved long ago, and it will not be a problem for the display to display the same content overnight. However, due to the decorative function and security function of the screen saver, it was still preserved. As for "protecting the screen", even for CRT monitors, it has long been useless. As for LCD, there is no such thing. When the light is on, the screen will light up. Seeing black only reflects light upwards, but the screen is still working. Can it not affect his life? So the best way to protect the display (whether CRT or LCD) is to turn it off when not in use! At present, many notebooks provide shortcut keys to close the LCD screen, such as Fn+F3 of IBM notebooks. When the notebook screen is not used temporarily, you can turn off the screen by shortcut keys or directly, which can effectively prolong the life of the screen.
2. Try to minimize the possibility of direct exposure of the screen under strong light. When using during the day, try to close the curtains to prevent the screen from being exposed to strong light, which will lead to excessive temperature and accelerate aging.
3. The easiest way to delay screen aging is to reduce the brightness of the screen. Generally, it is enough to open 3-4 squares during the day, and only need to open 1-2 squares at night. For brightness and longevity, I believe everyone still prefers the latter. Sometimes the default brightness will be restored after the system is restarted. The screen is usually very bright at this time. For the life of the screen, be sure to remember to switch it back.
LCD screen is one of the most vulnerable parts of notebook computer. Please remember not to "point" the screen with sharp objects such as pens and keys. As for the consequences of doing so, I haven't tried it and I don't want to experiment. I just remind you that in case of bad spots or stains, you will cry! At that time, it was too late for you to regret! !
Third, LCD screen maintenance hardware
As the saying goes, "If you want to do a good job, you must sharpen your tools first." The most important thing to maintain LCD screens is tools. Here, the tool I strongly recommend to you is 3M "Scotch-Brite lens cleaning cloth", a special rag commonly known as "magic cloth" (available in major supermarkets, price: 17.90 (.
3M Sego polishing is a kind of cleaning cloth specially designed by 3M Company to wipe smooth surfaces. Although it looks rough, in fact, due to the patented fiber material and specially designed fluff structure, its cleaning ability is excellent, which can not only effectively clean the dust and dirt on the screen, but also ensure that no fluff will fall off and the screen will not be scratched during cleaning! The performance is really excellent!
In addition to cleaning the LCD screen, you can also clean the CRT screen, TV screen, various lenses, and even clean the furniture, with good results. Therefore, 3M "spoon wipe" is also recommended as a special wiping cloth for lens.
Are you wondering: a rag can do a good job of LCD maintenance? Hehe, of course, for general maintenance, 3M gauss wiping is enough. If your notebook is used in harsh environment and you don't protect it properly, we have to invite two people from outside to help us use the scratch-resistant maintenance towel "Kelier Mopaco" and 3M LCD cleaner.
Mopak is made of spunlace cloth and special cleaning liquid, which has the functions of dust removal, decontamination, sterilization, disinfection, antistatic and brightening, and can be widely used in the cleaning and maintenance of digital products. Small size, easy to carry and obvious dustproof effect. It is said that his functions also include quick sterilization, disinfection, decontamination, preservation, [repair] scratches and cracks in the shell, and after use, a special protective film is formed, which is antistatic, moisture-proof and antimagnetic. I often use the advantages of scratch-proof, fresh-keeping, environmental protection and health, but I have no chance to actually experience these functions during the use.
The 3M cleaner is also a special tool for screen cleaning produced by 3M Company. It can thoroughly clean computer screens, general filter surfaces and TV screens. With the unique brush anti-static rag and spray cleaner, it is convenient and simple to use, which can not only remove dust and fingerprints, but also prevent static electricity and reduce dust accumulation. Like 3M magic cloth, it can be applied to computer video screen, LCD screen, CRT computer monitor and TV screen, camera, projector lens, TV set, computer shell and so on.
With the escort of these two generals, I believe your LCD screen can "escort"!
Fourth, maintenance procedures
With the right tools, let's start cleaning step by step to ensure the safety of LCD screen!
First of all, we unplug the laptop and take out the battery, so that the laptop is in a state of complete power failure to avoid water leakage or short circuit caused by cleaning;
Then, we wet the 3M magic cloth with water, then twist it to 90% dry, and use it to clean the LCD screen. Cleaning method is similar to cleaning the screen of home TV, generally starting from the center of the screen and wiping it clockwise. In fact, if the screen is not very dirty, there is no need to wet the 3M magic cloth, just wipe it with a dry magic cloth. If you encounter stubborn stains, you can usually clean them with a little "breath" and then clean them with magic cloth immediately. After wiping the LCD screen with a wet 3M magic cloth, put the LCD screen of the notebook together with the magic cloth in the shade and dry it naturally. There may be water stains on the LCD screen after wiping with a wet magic cloth. Please wipe it clean with a dry magic cloth.
After such cleaning, the LCD screen is as bright as new. But we are still not satisfied, because we have to lay a certain foundation for future use.
Next, we open a pack of Mopak oily wet wipes and follow the above steps to wipe the screen clockwise from the center to all sides. According to Mopak's instructions, if it can be rubbed to generate heat, the effect will be better. Therefore, we can wipe for a long time until friction generates heat. Then let it stand for 5 minutes, and then wipe the screen surface with 3M magic cloth.
If you feel uneasy, you can continue to use the 3M screen cleaner to add another layer of protection to your beloved notebook screen.
Ok, so far, the cleaning of this screen has been completed. Looking at the screen as clean as new, do you feel that your notebook is "reborn"? However, cleaning is only temporary, so you should take good care of it in your usual use!