As is well known, the most basic principle of liquid crystal display is that liquid crystal molecules are a unique substance that undergoes refraction when light enters them. At the same time, liquid crystal molecules have unique electrical properties that can deflect under the action of an electric field. By combining the two characteristics, under the action of a polarizer, people can use an electric field to control the brightness change of light, refining it to every pixel, which can control the brightness level of each unit, thus achieving the display effect.
Observing from the center of the screen and slightly from the side, the intensity of light entering the human eye is different. For the same image, there is a situation where one part is brighter and the other part is darker, which is the difference in contrast. Based on the definition of perspective, within the range of contrast that can be accepted by the human eye, the corresponding viewing screen angle is the perspective.
LCD screens belong to backlight type display devices, and the light emitted is provided by the backlight behind the LCD module, which inevitably leads to the LCD screen having only one optimal viewing angle - front view. When viewed from other angles, the backlight can penetrate adjacent pixels and enter the human eye, causing color distortion. The range without distortion is the viewing angle. The viewing angle of LCD screens is also divided into horizontal and vertical viewing angles, with horizontal viewing angles generally greater than vertical viewing angles.
At present, as long as the horizontal perspective reaches 120 degrees and the vertical perspective reaches 140 degrees, it can meet the application needs of most users. The latest LCD display panel is produced using wide-angle technology, which can achieve a viewing angle of up and down 140 degrees, left and right 150 degrees, reducing the inconvenience caused by the small viewing angle. Of course, such performance cannot be compared to CRT screens with a viewing angle close to 180 degrees, but for most applications, it is already more than enough.
Ruxin Gaoliang is committed to creating long-term value for our customers. We are a high-quality domestic LCD display manufacturer with 13 years of experience in research, development, production, and sales, specializing in various types such as high brightness screens, bar screens, and small-sized LCD screens. We provide one-on-one professional services for you.