What is the difference between LCD TFT and LCD? Which is better?

TFT is just a type of LCD screen, and the English abbreviation of LCD screen is LCD. Types of LCD screens The main types of screens used for display are as follows:

1. STN LCD screen.

It is a passive matrix LCD device, which has the advantage of low power consumption of 1 7 and has the biggest advantage of power saving. The display principle of color STN is to add a color filter to the traditional monochrome STN liquid crystal display, and display the three primary colors of red, green and blue through the color filter, and the color picture can be displayed. The STN screen shows a slow response time, about 200 milliseconds, and the tailing phenomenon is severe during ** animation.

2. TFT LCD screen.

It is an active matrix type LCD screen, with a special lamp on the back, which can actively control each independent pixel on the screen, which is what we often call the active matrix TFT, the reaction time is relatively fast, about 80 milliseconds, and the viewing angle is large, usually reaching about 130 degrees. However, the disadvantage is that it consumes more electricity and the manufacturing cost is relatively high.

3. OLED LCD screen.

It is an organic light-emitting display, which is fundamentally different from the traditional LCD display mentioned earlier, that is, it does not require a backlight, it uses a very thin coating of organic materials and a glass substrate, which emits light when an electric current is passed. Therefore, OLED LCD screens can be made lighter and thinner, with a larger viewing angle, and at the same time, it is also more power-efficient. However, the service life is short, and the screen cannot be made larger.

4. LTPS LCD screen.

It is a new generation of technology products derived from TFT LCD. LTPS screens are manufactured by adding laser processing to traditional amorphous silicon (A-SI) TFT-LCD panels, reducing the number of components by 40% and the number of connections by 95%, greatly reducing the chance of product failure. The display is greatly improved in terms of energy consumption and durability, with 170-degree horizontal and vertical viewing angles, a display response time of 12ms, a display brightness of 500 nits, and a contrast ratio of up to 500:

1。MP4 products on the market mainly use the first three screens. The STN screen used by ordinary products, from the characteristics of this screen, we can see that its display effect is not very good, and the color is not rich. Although TFT LCD screen is widely used in notebook products, it has no advantage in MP4 due to cost and size.

Although OLED has excellent color and appearance, its short service life also limits its use. At present, the screen used in MP4 display, the most suitable is the LTPS screen, it can be said that it is a display technology born for MP4.

TFT, thin film transistor, is one of the active matrix type liquid crystal display AM-LCD, TFT is set up on the back of the liquid crystal with a special light pipe, which can "actively" control each independent pixel on the screen, which is also the origin of the so-called active matrix TFT (Active Matrix TFT), which can greatly improve the reaction time, the general TFT reaction time is relatively fast, about 80ms, On the other hand, STN is 200ms, and if you want to increase it, there will be flickering. And because the TFT is an active matrix LCD, the arrangement of the liquid crystals is memorable, and it does not return to its original state immediately after the current disappears. TFT also improves the STN flickering (water ripple)-blurring phenomenon effectively improving the ability to move the picture.

Compared with STN, TFT has excellent color saturation, reproduction ability and higher contrast, but the disadvantage is that it consumes more power and the cost is higher.

LCD: Liquid crystal display, liquid crystal display, mainly divided into: monochrome, false color, true color and so on.

TFT is a type of LCD, also known as true color screen. It is stronger than the other two in brightness and viewing angle!

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