What is the visual angle of the liquid crystal Monitor

The visual angle is the angle by which the user can observe all the contents of the screen clearly from different directions. Because the provision of LCD display light source refraction and reflection after the output has a certain direction, in excess of this range of viewing will produce color distortion, CRT monitor will not have this problem. The visual angle size determines the size of the user's visual range and the best viewing angle. If it is too small, the user deviates slightly from the front of the screen and the screen is dimmed. The average user can use the 120 degree visual angle as the choice standard.

Visual Angle judgment Standard

At present, the visual angle of the LCD display on the market is symmetrical, but the upper and lower is not necessarily symmetrical, often the upper and lower angles than the left and right angles. When we say that the visual angle is about 80 degrees, it is still clear that the screen image is visible when you stand at 80 degrees from the screen normal (the imaginary line in the middle of the display). The larger the angle of view, the better the viewing angle and the more applicability of the LCD display.

Because everyone's eyesight is different, so we use contrast, the greater the contrast in the maximum visual angle, the better. At present, most of the products in the market visual angle of more than 120 degrees, some products reached more than 170 degrees. What needs to be said is that in different measurements, the visual angle of the nominal value is also different, because the display manufacturers usually do not specify the specific measurement, so overall, the visual angle is a reference value

The visual angle of the liquid crystal display includes the horizontal visual angle and the vertical visual angle two indicators, the horizontal visual angle indicates that the display's vertical normal (i.e. the vertical imaginary line in the middle of the display) is normal, and still can see the display image normally at a certain angle perpendicular to the normal left or right. This angle range is the horizontal visual angle of the liquid crystal display, and if the horizontal normal is the same, the visual angle of the top and bottom is called the vertical visual angle. Generally speaking, the visual angle is based on the contrast change as the reference standard. When the angle of observation is enlarged, the contrast of the display image seen in this position will decrease, and when the angle is enlarged to a certain degree, the contrast is reduced to 10:1, this angle is the maximum viewing angle of the liquid crystal display.

Now in the liquid crystal display, many manufacturers have been able to achieve a horizontal visual angle of 170 degrees, vertical visual angle of 160 degrees such level. For example, ASUS liquid crystal display now all series of products visual angle reached 170/160 this level, the user in the use of the process of visual perception and CRT monitor is not very different.