The liquid crystal panel is a material that determines the brightness, contrast, color, and viewing angle of the liquid crystal display. The quality of the liquid crystal panel and the quality of the technology directly affect the overall performance of the liquid crystal display. From a technical point of view, whether the liquid crystal panel can achieve the 16.7M color of the true color display means that the three color channels of R.G.B (red, green and blue) have the ability to physically display 256 gray scales.
According to the quality LCD panel grade can be divided into three levels A, B, C, the basis of its classification is the number of bad points. Of course, some manufacturers will make a more detailed distinction between LCD specifications, such as "A+", "A-", "B+", etc.
In fact, there is no strict hardening rule in the world, and the standard classification of liquid crystal panels introduced by panel manufacturers in different regions is not the same. Normally, the number of dead pixels in the LCD panel is A level within 5, and the number of dead pixels is more than 5 and less than 10 are classified as Class B. If the number of dead pixels is more than 10, it belongs to the C-class panel.
In principle, Class A liquid crystal panels are most suitable for the production of displays, but it is inevitable that LCD panels produce B-class panels, so most of these B-class panels will be digested by brand-name display manufacturers. Class C panels are not suitable for use in displays, and most are cut into small-area liquid crystal panels for use in other fields. However, there are also very few LCD monitor manufacturers that will adopt C-class panels. Two or three years ago, there were low-priced inferior LCD monitors that disrupted the market. Of course, in addition to the number of bad points, the performance of the B-class and C-class panels in other aspects can not be compared with the A-class panel.
Compared with Class A panels, the brightness of Class B and Class C panels is relatively uneven, the color saturation is relatively insufficient, the image color reproduction is worse, and some appearances may be damaged. In addition to using professional instruments to determine the level of the LCD panel, consumers can also use the naked eye for intuitive identification. It is best to use the known Class A panels for comparison, and the Class B and Class C panels will immediately show their original shape.