[LCD screen maintenance]How to maintain the LCD monitor LCD screen protection precautions
LCD screen protection precautions
I. The top cover is not a “stage”
I don’t know if you have had this experience: sometimes you need to move your laptop, in addition to holding the machine, there are also items such as the power adapter and an external mouse. At this time, two hands are not enough. Some friends try to save trouble, put these things on the top of the notebook and move them away (the author has also seen several tomes piled on the top cover). It’s easy to save trouble, everyone knows that the strength of the design and manufacture of the top cover of many notebook computers is not enough to ensure that its deformation will not affect the LCD in this case. You can try squeezing the top cover of the notebook with your fingers, and water ripples will appear on the corresponding part of the screen of most notebooks. The liquid crystal display has several layers of construction, which are: vertical linear polarizer, glass sheet, transparent X electrode, alignment layer, liquid crystal flow, alignment layer, transparent Y electrode, glass sheet, horizontal linear encoder. And these materials are very fragile and easily broken, so once the external force is too large, it will cause irreparable damage to the LCD. Some notebooks take this into account and have specially designed or strengthened the top cover.
Second, bag selection, don’t be careless
Laptops need to be carried out frequently, because the outdoors may often encounter windy conditions. Rain is bad weather, and bumps are inevitable. At this time, it is especially necessary to buy a well-made, thick and reliable notebook bag for your notebook. Some laptop bags are made of waterproof fabrics, which can effectively prevent rainwater from eroding and damaging the laptop LCD and other internal components; while thick bags can also minimize the damage to the fragile LCD screen caused by collisions. Don’t think that everything will be fine if you have a good bag. Fortresses are often breached from the inside. You also need to pay attention to the placement of items in the laptop bag. Do not put sharp objects such as keys and screwdrivers in the bag. , floppy drive and other accessories should be classified into special pouches in the bag, so as not to squeeze the top cover of the notebook and cause damage to the LCD screen, and also try to avoid the notebook shell from being scratched and scratched.
Third, don’t ignore the upper cover switch
Seeing this, some friends may say: Joke! Could it be that I can’t even switch the laptop screen on and off? In fact, due to the pursuit of thinness and lightness, some notebooks have to sacrifice the strength of the top cover in design. The connecting shaft between the top cover and the fuselage of most notebooks is made of plastic material. If the force is uneven or too large when switching on and off, the connecting shaft will be easily broken or even separated over time. The display of the LCD screen and the power supply cable pass through the channel in the connecting shaft Connected to the host, it is likely to be damaged at this time. Therefore, the correct switch method should be: open and close in the center of the front edge of the top cover, and pay attention to the even force and gentleness as much as possible.
Fourth, “pointing the country” is not necessary
Some friends like to use their fingers to point on the LCD screen when using a laptop for presentations, so that It will leave your finger prints on the LCD, which will cause trouble for future cleaning (the specific cleaning method will be described in detail later); your fingernails may cause irreparable scratches to the LCD; It may cause damage to small lines and devices on the LCD, and the most common occurrence is the so-called “dead pixel”. Some friends are used to talking and laughing at the screen “spittle flying” (such as during voice chat), and this habit is also undesirable. Because human saliva is acidic, it has a certain degree of corrosion on the LCD screen. In order to avoid this situation, some friends who are keen on the computer protect the screen with a film, just like a new machine that has just been opened, but this is not recommended, because it will affect the display effect of the screen to a large extent.
Five, pay attention to eating and drinking
Many friends like to use the computer while eating, which is easy to cause food residues to stick to the LCD screen or fall off. into the keyboard gap. Especially some juicy and greasy food, it is difficult to avoid it splashing on the LCD screen and causing difficult to clean up stains; drink water or other beverages when using the notebook should be careful, if the liquid enters the edge of the LCD screen in the power-on state gaps, the consequences are unimaginable. At the same time for your health, please try to avoid this habit.
6. Humidity and temperature difference should be avoided
Moisture is the “natural enemy” of liquid crystal, so do not let anything with moisture enter the LCD. In addition to avoiding drinking water near the computer as mentioned above, be careful not to store the machine in a humid place, serious moisture will damage the components inside the LCD monitor; in winter and summer, when entering and leaving a room with heating or air conditioning The temperature difference will cause the “condensation phenomenon” to occur. When the user energizes the LCD at this time, it will cause the liquid crystal electrodes to corrode and cause permanent damage. First of all, it is necessary to pay attention to avoid this situation. Generally speaking, the temperature change should not be greater than 10℃/10 minutes; if this happens, don’t panic. Just wipe it off lightly, and then turn it on again. If moisture has entered the LCD, just place the LCD in a warmer place (of course not to bake it on a fire), such as under a desk lamp, and gradually evaporate the moisture inside. If it is in the rainy season, even if you do not use your notebook, you should turn on the power regularly and let the machine run for a period of time so that the heating components can dissipate the moisture, and it is best to put a small packet of moisture-proof agent in the notebook bag.
Seven, strong light exposure is a taboo
Everyone may know that the phosphor powder of the picture tube of the CRT monitor will age under strong light, reducing the luminous efficiency, In fact, LCD will also accelerate aging due to strong light exposure. In order to avoid such a result, we should place the monitor in a place with weak or no sunlight; or in a room with strong light, hang dark curtains to reduce the light intensity.
Eighth, time and brightness are well controlled
The service life of the LCD screen of the notebook computer is generally nominally 5 years. It uses a backlight lamp to illuminate, and the lamp has a service life. The service life here mainly refers to the brightness index. After the nominal time is reached, the brightness of the LCD screen is basically reduced by half. This is the reason why the screen of the laptop turns yellow after being used for a long time. In addition, the graphic unit of the LCD is constructed of many liquid crystals, that is, if a fixed content is displayed for a long time, some graphic units will overheat and cause damage. Once the damage occurs, it is permanent and irreversible. It is repairable, so we should pay enough attention to this problem. Of course, deliberately reducing the use time of the notebook is not a realistic and good way, after all, the computer is used. When we leave temporarily, we can set a shorter screen off time in the power management to reduce the loss of the lamp (some machines can quickly turn off the screen backlight through shortcut keys, which is more convenient); during normal use, the brightness of the screen can be reduced Adjust to an appropriate level (the specific level depends on the light of your environment and personal habits) to delay the aging speed of the lamp; generally speaking, do not leave the LCD on for a long time (more than 72 hours in a row); need to pay attention Yes, the display principles of LCD and CRT are different. It is useless to use the screen saver when there is no operation. At this time, the backlight is still illuminating and consuming.
Nine, a piece of cotton paper is less troublesome
You can notice that when the notebook is closed, the keyboard and LCD screen may rub, resulting in a blurry screen , especially the possibility and degree of extrusion is even greater (this is one of the reasons why you should not pile debris on the top cover). Laptop users also have a very convenient solution, just find a piece of soft and smooth cotton paper (the area is slightly larger than the notebook keyboard) and lay it on the keyboard, so that you can basically avoid worries. It is also necessary to note that if your laptop uses a pointing stick mouse, the raised pointing stick cap is also a factor that causes the screen to scratch when closing. Please remove the pointing stick cap when you close the notebook and store it separately.
10. Wipe and clean carefully
No matter how careful we are, the LCD screen will inevitably be contaminated with stains and dust, and we must properly clean it according to the situation. Let’s see how to properly “wash your face”:) Notebook LCD screen is very easy to absorb dust, this kind of situation is very easy to deal with, just use a dry soft brush to gently brush it off (you can also use Wash the ear balls and blow them off), no additional treatment is required. If your screen is covered in fingerprints, drool, and other unknown stains, you’ll need further cleaning. Note: The operation should be turned off when wiping; and the cleaning agent or anhydrous alcohol should not be too much, so as to prevent the liquid from flowing into the LCD through the gap between the screen and the screen frame, causing failure; the wiping direction should be consistent from beginning to end, and do not circle back and forth; when wiping It should be as gentle as possible to avoid damaging the LCD screen with excessive force.
Eleven, non-removable is the bottom line
In many laptop manuals, this paragraph will be marked: “To avoid electric shock, do not Open the back cover. For service, please contact a professional or authorized person.” Like other electronic products, high voltage is generated inside the LCD. The CFL alternator in the LCD backlight element may still have a voltage of up to 1000V after a long time of shutdown, which is definitely a dangerous value for a human body with only 36V of electrical resistance, and the harm it may cause to the human body can be imagined. Know. So, never attempt to disassemble or change the LCD display, this is not the scope of DIY’s “game”. Even if no harm to the human body occurs, temporary or permanent “incapacity” is unavoidable for LCDs. Therefore, for the health of yourself and the laptop LCD screen, please don’t cross this bottom line!
