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Company News >> What are the classifications of the LCD display module? 8th,Nov,2018
                                             1. TN type is the mode adopted by the most mainstream LCD display module on the market, and is widely used in entry-level and mid-end panels. At present, the common performance indicators are not natural and have a natural dysentery. The TN panels seen on the market are all improved TN+film. The film is the compensation film, which is used to make up for the lack of viewing angle of the TN panel. It is said that the TN panel is better than the front two panels because of its output. The number of gray levels is large, and the liquid crystal molecules deflected at a high speed, so that the response time of the liquid crystal molecules is easily improved. Currently, the liquid crystal products of 8 ms or less on the market are all TN panels. In general, the TN panel is a product with obvious advantages and disadvantages. The price is cheap, the response time can satisfy the game requirements, and its advantages are not ideal. The viewing angle is not ideal and the color performance is unreal and obvious disadvantage.

2. The display principle of the STN type is similar to that of the TN. The difference is that the TN twisted nematic field effect liquid crystal molecules rotate the incident light by 90 degrees, while the STN super twisted nematic field effect rotates the incident light by 180 to 270 degrees.

    LCD display module

3. DSTN scans the twisted nematic liquid crystal display by double scanning to achieve the display. DSTN is developed from the Super Twisted Nematic Display (STN). Since the DSTN uses dual scanning technology, the display effect is greatly improved compared to the STN.

4. Wide viewing angle mode is mostly used for LCD TVs. Take IPS as an example. It is a panel technology introduced by Hitachi in 2001. It is also known as "Super TFT." From a technical point of view, the liquid crystal molecules of conventional LCD displays generally switch between vertical-parallel states, and MVA and PVA improve them into vertical-bidirectional tilt switching modes. The biggest difference between IPS technology and the above technology lies in In which state, the liquid crystal molecules are always parallel to the screen, but the direction of rotation of the molecules is different under power-on/normal state - note that the rotation of MVA and PVA liquid crystal molecules belongs to spatial rotation (Z-axis), while IPS liquid crystal molecules The rotation is in the plane of rotation (XY axis). In order to cooperate with this structure, the IPS requires the electrode to be modified, and the electrode is on the same side to form a planar electric field. The problem caused by such a design is twofold. On the one hand, the viewing angle problem is solved, and on the other hand, the liquid crystal effect is low (light transmittance) due to the marginal electric field effect, so IPS also has the disadvantage of slow response time. 16.7M color, 178 degree viewing angle and 16ms response time represent the highest level of the current IPS LCD display module.
 

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