#TFTLCDscreen

https://tmsmicro.com/detailed-analysis-of-the-type-of-lcd-screen-and-its-principle/

1 IPS(In-Plane Switching)

IPS technology is commonly known as “super TFT”. The liquid crystal molecules of traditional LCD display generally switch between vertical and parallel states. MVA and PVA improve it into a vertical – double tilt switching mode, while IPS The biggest difference between the technology and the above technique is that the liquid crystal molecules are always parallel to the screen in any state, but the direction of rotation of the molecules is different in the home appliance/normal state. Note that the rotation of the MVA and PVA liquid crystal molecules belongs to the rotation in space, while the rotation of the liquid crystal molecules belongs to the rotation in the plane.

In order to cooperate with this structure,IPS requires the electrode to be improved, the electrode is done on the same side, the formation of a plane electric field, the impact of this design is double, on the one hand, the problem of visual Angle has been solved, on the other hand, due to the liquid crystal molecule rotation Angle, low panel opening (light transmittance), so IPS It also has the disadvantages of slow response time and difficult contrast improvement.

However, there are not many models available on the market. 16.7M, 170 degree viewing Angle and 16MS response time represent the highest level of IPS LCD displays today!

2 VA panel:

VA panel is now the high-end liquid crystal application of the panel type,16.7m color and large visual Angle is the high-end positioning of this type of panel capital, at the same time VA can be divided into MVA,(multi-quadrant vertical orientation technology) panel and PVA panel

MVA technology can be said to be the earliest appearance of wide-angle LCD panel technology

MVA technology refines this model in a clever way. The liquid crystal layer of the MVA LCD panel contains a projection for the liquid crystal molecules to adhere to, in the state of no voltage applied,MVA The panel looks the same as the traditional technology, liquid crystal molecules are perpendicular to the screen, and once under the action of voltage, liquid crystal molecules will cling to the projection on the deflection, forming a state perpendicular to the surface of the projection, at this time, it and the screen surface will also produce deflection effect, improve the transmission rate, the formation of screen output. TFT display module.

3 TN Panel

TN panel is widely used in the entry level and terminal LCD panel, in the performance index is not outstanding, can not perform 16.7m color, and the visual Angle is not ideal, so we see in the market TN panel are improved TN+film,film is a compensation film, used to make up for TN The lack of visual Angle of the panel and the trial of color dithering technology make the TN panel, which can only display 260,000 colors, gain the display capacity of 16.2m.

The only advantage TN panel has over the previous two panels is that its response time is easily improved due to its low output grey connection series and fast molecular deflection rate of liquid crystal. At present, liquid crystal products below 8ms on the market all use TN panel. In general,TN panel is used Panel is a product with obvious advantages and disadvantages. Its low price and response time can meet the requirements of high-speed sports games are its advantages, while the unsatisfactory visual Angle and unreal color performance are obvious disadvantages.