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Have You Ever Understood the Viewing Angles of Industrial LCD Display Screen?

2021-11-24 00:00:00  Original:amongo  Click:8

As we all know, the most basic principle of LCD display screen is that liquid crystal molecules are a unique substance, and light will be refracted when light enters it. At the same time, liquid crystal molecules have unique electrical characteristics and can be deflected under the action of an electric field. With the combination of the two characteristics, under the action of the polarizer, people can use the electric field to control the light and dark changes of the light, refined to each pixel, that is, can control the brightness of each unit. So as to achieve the display effect.


Ⅰ. The principle of light emission of LCD display screen


The most basic principle that people use liquid crystals for display is that because liquid crystal molecules are a unique substance, they will be refracted when light enters it. At the same time, liquid crystal molecules have unique electrical characteristics and can be deflected under the action of an electric field. With the combination of the two characteristics, under the action of the polarizer, people can use the electric field to control the light and dark changes of the light, refined to each pixel, that is, can control the brightness of each unit. So as to achieve the display effect.


Ⅱ. Viewing the LCD display screen from different angles


The LCD display screen provided by industrial monitor suppliers is a backlight type display device, and the light emitted by it is provided by the backlight behind the liquid crystal module, which will inevitably lead to the LCD display screen having only one best viewing angle-front view. When you look at it from other angles, because the backlight can penetrate the pixels next to it and enter the human eye, it will cause color distortion. The range of non-distortion is the viewing angle. Observing from the center of the screen and observing from the side, the light intensity that enters the human eye is different. For the same picture, one part is bright and one part is dark, that is the contrast is different. Combined with the definition of viewing angle, within the range where the contrast can be accepted by the human eye, the corresponding viewing screen angle is the vertical viewing angle.


At present, as long as the LCD industrial monitors have a horizontal viewing angle of 120 degrees and a vertical viewing angle of 140 degrees, it can meet the application needs of most users.


The latest industrial LCD panels are produced with wide viewing angle technology, which can achieve a viewing angle of 140 degrees up and down, and 150 degrees left and right, reducing the inconvenience caused by viewing angles that are too small. Of course, this performance is incomparable to the close to 180-degree viewing angle of the CRT display, but it is more than enough for most applications.