LCD liquid crystal screenViewing angle refers to the viewing angle of the LCD screen, that is, the user can see the maximum range of screen images at different angles. Viewing angle is an important technical parameter of LCD, which directly affects the user's viewing experience. This article will introduce the definition, classification and optimization methods of LCD viewing angle.
I. Definition of perspective
The viewing angle of an LCD screen is the maximum range in which the user can see the screen image at different angles. Viewing angle is usually expressed in two directions: horizontal and vertical. Horizontal angle of view refers to the screen from left to right angle range, vertical angle of view refers to the screen from top to bottom angle range. The larger the angle of view, the wider the range the user can see when viewing the screen.
II. Categorization of perspectives
physiological perspective
Physiological angle of view is the maximum range of the screen image that the user can see under normal physiological conditions. The physiological viewing angle is generally about 120 degrees, including horizontal and vertical viewing angles.
Visual perspective
Visual angle of view is the maximum extent to which a user can see a screen image under general visual perception. The visual angle of view is smaller than the physiological angle of view, usually about 100 degrees.
Practical Perspective
The actual viewing angle is the maximum range of the screen image that the user can see in actual use. The actual viewing angle depends on factors such as the size of the screen and the environment in which it is used.
III. Optimization methods for perspective
Use of high-contrast liquid crystal materials
High contrast liquid crystal materials can provide a greater range of viewing angles. For example, VA-type liquid crystal materials have a high contrast ratio and can maintain better color and brightness at larger angles.
Adoption of multi-layer liquid crystal arrangement
The use of a multi-layer liquid crystal arrangement can increase the transmittance and color saturation of an LCD screen, thereby expanding the range of viewing angles. For example, an IPS type LCD screen using a multi-layer liquid crystal arrangement can maintain better color and brightness at larger angles.
Applied Optical Compensation Film
The application of optical compensation films can improve the color and brightness uniformity of an LCD screen, thereby expanding the viewing angle range. For example, a TN type LCD screen can have an optical compensation film applied to improve its color and brightness uniformity.
Setting the right viewing distance
Viewing distance is also an important factor in the range of viewing angles. Too close a viewing distance can lead to distortion and discoloration of the screen image, while too far a viewing distance can make the screen image appear too clear. Therefore, setting the right viewing distance can optimize the viewing angle range.
In summary, the viewing angle of the LCD screen is an important technical parameter that affects the user's viewing experience. Users in the purchase and use of LCD screen, need to pay attention to its viewing angle range and optimization methods, in order to get a better viewing experience.