What Types Of Display Screen Are There?

- Jun 10, 2019-

1. TN is currently the most mainstream LCD mode, which is widely used in entry-level and mid-end panels. At present, there are common natural illnesses in performance indicators that do not show color visual angle. The TN panels seen in the market are all improved TN+film. Film is the compensation film, which is used to make up for the deficiency of the visible angle of TN panels. To say that TN panels are better than the front two panels, because of the large number of gray class output and the fast deflection speed of liquid crystal molecules, the response time of TN panels is easy to improve. At present, the liquid crystal products below 8ms in the market are all using TN panels. Generally speaking, TN panel is a product with obvious advantages and disadvantages. Its price is cheap. Its response time can meet the requirements of the game. Its advantages lie in its inadequate visual angle and unreal color performance.

2. The display principle of STN is similar to that of TN. The difference is that the liquid crystal molecule with TN torsional nematic field effect rotates the incident light by 90 degrees, while the STN super-torsional nematic field effect rotates the incident light by 180-270 degrees.

3. DSTN scans twisted nematic LCD screen by DOUBLE-SCAN mode, so as to achieve the display purpose. DSTN is developed from super twisted nematic display (STN). Because DSTN uses dual scanning technology, the display effect is greatly improved compared with STN.

4. Wide view mode is mostly used in LCD TV. Taking IPS as an example, it is a panel technology launched by Hitachi in 2001. It is also commonly known as "Super TFT". From a technical point of view, the liquid crystal molecules of traditional LCD display are generally switched between vertical and parallel states. MVA and PVA have improved the switching mode of vertical and bidirectional tilt. The biggest difference between IPS and the above technologies lies in that the liquid crystal molecules are always parallel to the screen in any state, but the rotational direction of the molecules is different in the electrified/conventional state. Meaning, the rotation of MVA and PVA liquid crystals belongs to the Z axis, while that of IPS liquid crystals belongs to the X-Y axis. In order to cooperate with this structure, IPS requires the improvement of the electrodes. The electrodes are on the same side to form a plane electric field. The problems brought by this design are twofold. On the one hand, the problem of visual angle has been solved. On the other hand, due to the marginal electric field effect, the light efficiency of liquid crystal is low (light transmittance), so IPS also has the shortcoming of slow response time. 16.7M color, 178 degree visual angle and 16ms response time represent the highest level of IPS LCD.