LCD viewing angle

LCD viewing angle really is a vexing problem when the backlight through the polarizing film, and orientation of the liquid crystal layer, the light output will have a direction. That most of the light is emitted from the screen vertically, so from a certain point of view a larger LCD monitor, we can not see the original color, or even only to see all white or all black. To solve this problem, manufacturers have also started to develop wide-angle technology, so far there are three of the more popular technology, namely: TN + FILM, IPS (IN-PLANE-SWITCHING) and MVA (MULTI-DOMAIN VERTICAL alignMENT).
           
First TN + FILM technology, which is based on the original, an additional layer of wide viewing angle compensation film. This layer of the viewing angle compensation film can be increased to 150 degrees, is a simple way, in a large number of applications in liquid crystal displays. However, this technique does not improve the contrast ratio and response time performance, perhaps for manufacturers, TN + FILM is not the best solution, but it really is the cheapest solution, so most of the Taiwan companies are using this Methods to build 15-inch LCD monitor.
IPS (IN-PLANE-SWITCHING, in-plane switching) technology, which claims to allow greater vertical and horizontal viewing angle of 170 degrees. There are advantages, there will be shortcomings, IPS technology, while increasing the viewing angle, but with two electrodes driving the liquid crystal molecules, need to consume more power, which makes the LCD monitor's power consumption increases. Furthermore deadly is driven in this way the response time of the liquid crystal molecules will be relatively slow.
MVA (MULTI-DOMAIN VERTICAL alignMENT, multi-domain vertical alignment) technology, the principle is to increase the prominence to form a plurality of viewable area. When the liquid crystal molecules is not completely in a static vertically, the applied voltage to the liquid crystal molecules are arranged horizontally, so that the light can be through the layers. MVA technology will increase the viewing angle to 160 degrees or more, and provide more than IPS and TN + FILM shorter response time. This technology is developed by Fujitsu, Taiwan Chi Mei (CMO in mainland China is a subsidiary of CMV) and Taiwan's AU Optronics authorized to use this technology. In addition to the above three wide viewing angle technology, there is the father of the lcd module SHARP exclusive ASV technology, a variant of Korea SAMSUNG MVA technology "PVA", as well as South Korea's Hyundai (HYDIS) of IPS deformation "FFS" technology.
           
Visual range is divided into parallel visual range and vertical viewing range, horizontal viewing range of the vertical axis is the Low Temperature Display as the center, left and right, you can clearly see the range of the image. Vertical viewing range is parallel to the axis of the display as the center, moving up and down, you can clearly see the range of the image. Viewing angle to the "degree" as a unit, the current form of the more commonly used label marked total direct horizontal, vertical range, such as: 150/120 degrees viewing angle of the current minimum of 120/100 degrees (horizontal / vertical), below this value will not be accepted, preferably 150/120 degrees.