lcd LCD is a kind of backlight display device, which emits light provided by the backlight behind the lcd LCD module, which inevitably leads to the positive view of LCD screen with only one best view angle. When you look at it from other angles, because the backlight can penetrate adjacent pixels and enter the human eye, it can cause color distortion, and the undistorted range is the angle of view. LCD the visual angle of the display screen is also divided into horizontal angle and vertical angle, the horizontal angle of view is generally larger than the vertical angle of view. FSTN- fully permeable LCD screen During life, whether you notice lcd LCD screen or not, there are different effects from different angles. From the middle of the LCD display screen, and the side observation, the light intensity into the human eye is different, for the same stone screen picture, that is, there is light, there is dark situation, that is, the contrast is different. Combined with the definition of perspective, in the range of acceptable contrast in the human eye, the corresponding perspective of the LCD screen is perspective. lcd LCD viewing is a headache. when the backlight passes through the polarizer, liquid crystal and directional layer, the output light is directional. in other words, most of the light is emitted vertically from the screen, so when you look at LCD display screen from a larger angle, you can't see the original color, or even you can only see all white or all black. lcd LCD screen in the market, as long as the horizontal angle of view reaches 120 degrees and the vertical angle of view reaches 140 degrees, it can meet the application needs of most users. The latest LCD screen is made of wide angle technology, up to 140 degrees, about 150 degrees, reducing the inconvenience caused by the small angle of view of LCD screen. of course, this performance can not be compared to CRT displays close to 180 degrees, but it is enough for most applications.
