【 Weak current College 】 LCD monitor is not appropriate to use screensaver

CRT (cathode ray tube) monitors Imaging principle mainly by filament heating emission cathode, e, and then accelerate very electric field, by focusing very accumulation of very fine, high-voltage electron beam in the anode, gain enormous energy, at very high speeds to bombardment phosphor layer. The goal of the electron beam bombardment is on RGB phosphor screen. To this end, the gun fired the electron beam is not a bundle, but three beams, they are victims of computer graphics R, G, B the three primary colors video signal voltage control, go to the bombardment of phosphor unit to display the full image.

In the graphical interface of the operating system, the display of color variety, when the user stops on the computer, the screen display will remain fixed in the same picture, the electron beam long bombardment of fluorescent layer the same region, long time, because display fluorescent layer fatigue effect causes the screen to aging, even the picture tube is breakdown. Therefore, from Windows3.X times screen saver has been working as the best protection of CRT display help, by changing the graphic display to a fixed point on the fluorescent layer will not be long bombardment, thus avoiding damage to the screen. While LCD (LiquidCrystalDisplay), LCD screen, it's core structure is similar to a "sandwich" of two pieces of glass substrate intermediate full motion of the liquid crystal molecules. Signal voltage direct control of thin film crystals is on or off, and then use the transistor control liquid crystal molecules, liquid crystal molecules have obviously optical anisotropy, capable of firing from a backlight lamp light for image display. While a full screen from the large number of pixels, each pixel as a switch carriers. This way you can control the display's resolution. If a LCD resolution can reach 1024x768 (XGA), it is represented by 1024X768 pixel point available for display. Therefore from LCD works can explain a lot of people will ask questions such as why the best resolution fixed LCD, LCD refresh rate why only 60Hz.

From the above we see the LCD works, one is showing the image of the LCD, the liquid crystal molecules has always been in the State of the work of the switch, for a response time of LCD work reached 20ms 1 seconds, liquid crystal molecules are switched around hundreds of times. The liquid crystal molecules of switching frequency will be life, the life of the LCD will appear and the phenomenon of aging, such as bad points, and so on. So when we are on the computer stop action also makes the screen display colorful repeated movement of the screen saver will undoubtedly make liquid crystal molecules are switched in repeatedly. Therefore, would not be appropriate for an LCD monitor with a screen saver.