What is the difference between TFT screen and LCD?

by:Genyu     2020-01-03

TFT screen is a variant of LCD. TFT, ThinFilmTransistor thin film transistor is an active matrix type liquid crystal display AM- One of the LCD, TFT is equipped with a special light tube on the back of the liquid crystal, which can 'actively' control each independent pixel on the screen, which is called the active matrix TFT (Activematrixft) The origin of the, so that can greatly improve the reaction time, the general TFT reaction time is relatively fast, about 80 MS, while STN is 200 MS, if you want to improve there will be flicker phenomenon. Moreover, because TFT is an active matrix LCD, the arrangement of liquid crystal can be memorized and will not be restored to its original state immediately after the current disappears. Compared with STN, TFT has excellent color saturation, restoring ability and higher contrast, but its disadvantage is that it consumes more power and costs more.

LCD: LiquidCrystalDisplay, liquid crystal display, mainly divided into: monochrome, pseudo color, true color and so on. TFT is a kind of LCD, also called True color screen. In brightness, visual angle is stronger than the other two!

LCD refers to liquid crystal display, TFT screen is a kind of LCD.

The Basic Display principles of TN-LCD, STN-LCD and DSYN-LCD are the same, except that the distortion angles of liquid crystal molecules are different. The STN-LCD's liquid crystal molecular distortion angle is 180 degrees or even 270 degrees. TFT-LCD, on the other hand, adopts a completely different display mode from TN Series LCD.

TFT- LCD technology is a technology that combines microelectronics technology with liquid crystal display technology. People use the technology of micro-electronics fine processing on Si to transplant TFT array Processing on Large Area Glass, and then connect the array substrate with another substrate with color filter film, using the mature LCD technology to form a liquid crystal box, and then through the process of post-process such as polarizer coating, finally forming a liquid crystal display (Screen).

In TFT- In LCD, the function of TFT is equivalent to a switch tube. The commonly used TFT screen is a three-terminal device. Generally, a semiconductor layer is made on a glass substrate, and there are source and drain electrodes connected to it at both ends. And through the gate insulating film, opposite to the semiconductor, a gate is provided. The voltage applied to the gate is used to control the current between the source and the drain electrode.

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