1, DLP technology: used in electronic engineering.

2.LCD technology: it is liquid crystal display technology and projection technology.

Second, the working principle is different.

1, DLP technology: the core of each DLP projection system is optical semiconductor, that is, digital microscope device or DLP chip, which was invented by Dr. Larry Hornbeck of Texas Instruments in 1987.

DLP chip may be the most advanced optical switch device in the world so far, which contains 2 million microscopes that are regularly arranged and hinged with each other. Each microscope is only one-fifth the size of human hair. When DLP chip cooperates with digital video or image signal, light source and projection lens, microscope can project a complete digital image onto a screen or other surface.

2.LCD technology: The principle of liquid crystal display is that liquid crystals will show different optical characteristics under the action of different voltages. Liquid crystals are physically divided into two categories, one is passive, which does not emit light by itself and needs an external light source. The other is power supply, mainly TFT. Each liquid crystal is actually a transistor that can emit light, so it is not a liquid crystal strictly.

Extended data:

DLP technology can be widely used in the fields of projection and image display.

1, business projector: used for sales and technical training demonstration;

2. Home theater: play DVD movies, watch TV programs, play games and enjoy digital photos on the big screen;

3. Large TV wall: large video equipment used by monitoring centers of public institutions;

4. Business activities and entertainment: concerts, corporate product promotion activities, awards ceremonies and large-scale public events.

Baidu encyclopedia -DLP technology

Baidu encyclopedia-LCD