Common types of monitors

From the early black and white world to the color world, displays have gone through a long and arduous journey. With the continuous development of display technology, the classification of displays has become more and more detailed. There are more than 500 LED display factories mainly located in Shenzhen. 40% of them mainly provide processing services, as well as small workshop-style production, and there are also a group of production companies focusing on quality and research and development.
1. CRT monitor
A CRT monitor is a monitor that uses a cathode ray tube (Cathode Ray Tube). It mainly consists of five parts: electron gun, deflection coil, shadow mask, phosphor layer and glass shell. Although CRT flat-screen monitors have the advantages of large viewing angles, no dead pixels, high color reproduction, uniform chromaticity, adjustable multi-resolution modes, and extremely short response time, which are difficult to surpass for LCD monitors, they have been withdrawn from the market.
2. LCD display
LCD display is liquid crystal display. Its advantages include thin body, small footprint and low radiation [7].
There are many liquid crystal particles inside the LCD display, which are regularly arranged in a certain shape, and each side of them has a different color, divided into red, green and blue. These three primary colors can be restored to any other color. When the display receives display data, it controls each liquid crystal particle to rotate to a different color surface, thereby combining different colors and images. Therefore, LCD monitors have shortcomings such as insufficient colors and small viewing angles.
3. LED display
LED display is a display screen that displays text, graphics, images, and animations by controlling the display mode of semiconductor light-emitting diodes.
LED technological progress is the biggest driving force for expanding market demand and applications. Initially, LEDs were used as miniature indicator lights in high-end equipment such as computers, audio and video recorders. With the continuous advancement of large-scale integrated circuits and computer technology, LED displays are rising rapidly.
LED displays integrate microelectronics technology, computer technology, and information processing technology. With their bright colors, wide dynamic range, high brightness, long life, and stable and reliable operation, LED displays have become the most advantageous new generation display equipment. At present, LED displays have been widely used in large squares, stadiums, securities trading halls and other places, and can meet the needs of different environments.
4. 3D display
3D displays have always been recognized as the ultimate dream for the development of display technology, and many companies and research institutions have been engaged in research in this area for many years. Developed countries and regions such as Japan, Europe, the United States, and South Korea have been involved in the research and development of volumetric display technology as early as the 1980s. In the 1990s, they began to obtain research results of varying degrees. Nowadays, they have developed products that require the wearing of 3D glasses and those that do not require the wearing of 3D glasses. Two major three-dimensional display technology systems for glasses. With the popularity of 3D blockbusters such as "Avatar", people's understanding of 3D technology has gradually deepened.
Using auto-stereoscopic display technology, the so-called "true 3D technology", users can watch stereoscopic images without wearing glasses. This technology uses the so-called "parallax barrier" to allow the two eyes to receive different images to form a three-dimensional effect. To form a three-dimensional image, a flat-panel display must provide at least two sets of images with different phases. Among them, flicker-free 3D technology is the most commonly used technology in displays today.
The picture of the flicker-free 3D technology is that after the left eye and the right eye each read 540 lines, the images of the two eyes overlap in the brain, so the image recognized by the brain is 1018 lines. Therefore, it can be determined that the flicker-free 3D Technical footage is in Full HD.
The advantages of flash-free 3D technology are:
①No flicker, healthier;
②High brightness, brighter;
③No radiation, more comfortable for eyes;
④No ghosting, more realistic;
⑤Reasonable price and high cost performance.
Flicker-free 3D technology also has shortcomings such as the inability to achieve 3D full HD images in the horizontal direction and high technology costs.