Three wide-angle technologies of LCD liquid crystal display

by:Kimeery     2021-08-30
The TN+FILM technology is to add a layer of wide viewing angle compensation film on the original basis. This layer of compensation film can increase the viewing angle to about 150 degrees, which is a simple and easy method and is widely used in liquid crystal displays. However, this technology cannot improve performance such as contrast and response time. Perhaps for manufacturers, TN+FILM is not the best solution, but it is indeed the cheapest solution, so most Taiwanese manufacturers use this Method to build a 15-inch LCD screen. IPS (IN-PLANE-SWITCHING, in-board switching) technology claims to allow up, down, left, and right viewing angles to reach a larger 170 degrees. Although the IPS technology increases the viewing angle, the use of two electrodes to drive the liquid crystal molecules requires more power consumption, which will increase the power consumption of the liquid crystal display. In addition, the fatal thing is that the response time of driving the liquid crystal molecules in this way will be relatively slow. The principle of MVA (MULTI-DOMAINVERTICAL alignMENT) technology is to add protrusions to form multiple visible areas. The liquid crystal molecules are not completely arranged vertically when they are static. After voltage is applied, the liquid crystal molecules are arranged horizontally so that light can pass through the layers. MVA technology increases the viewing angle to more than 160 degrees and provides a shorter response time than IPS and TN+FILM. This technology was developed by Fujitsu. Taiwan's Chi Mei (Chi Mei is a subsidiary of Chi Mei in the mainland) and Taiwan AUO are authorized to use this technology. ViewSonic’s VX2025WM is a representative of this type of panel. The horizontal and vertical viewing angles are both 175 degrees, basically no blind spots, and promises no bright spots; the viewing angles are divided into parallel and vertical viewing angles, and the horizontal angle is based on liquid crystal. The vertical axis is the center, moving to the left and right, you can clearly see the angle range of the image. The vertical angle is centered on the parallel central axis of the display screen, moving up and down, the angular range of the image can be clearly seen. The viewing angle is in 'degrees'. The more commonly used labeling format is to directly mark the total horizontal and vertical ranges, such as 150/120 degrees. The current lowest viewing angle is 120/100 degrees (horizontal/vertical), low It is unacceptable at this value, and it is better to reach 150/120 degrees or more. The above is the related sharing of the three wide-angle technologies of LCD liquid crystal display. Through the wide-angle technology, we can watch TV from any direction. If you want to know more details, please pay attention to Xingyuhe Electronics.
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