LCD TV 3D stereoscopic display technology

In 2010, 3D TVs became popular in the TV market with the grand opening of “Avatar”. Currently, not only Samsung, Sony, LG, TCL, Hisense, Konka, Skyworth, Changhong, etc., but also many color TV manufacturers have launched tablets with 3D capabilities. TV, and the superior three-dimensional picture effect, has gradually been recognized by the majority of consumers.

For 3D TV, many friends may only be limited to the understanding of the screen effect, and their display principles are not well understood by many friends. For this reason, when 3D TVs enter the consumer's home one after another, we might as well take a look at the relevant information on 3D TV technology.

The so-called 3D TV is to add a special precision cylindrical lens screen on the LCD panel, and the encoded 3D video images are independently sent to the left and right eyes of the person so that the user can experience the stereoscopic feeling with the naked eye without using the stereo glasses. Compatible with 2D screens.

At present, 3D television display technology can be divided into two categories: glasses and naked-eye. Naked eye 3D is currently mainly used in public business occasions, and will be applied to portable devices such as mobile phones in the future. In the domestic consumer field, whether it is a monitor, projector or television, it is now required to use 3D glasses.

For spectacles-based 3D technology, we can also subdivide three main types: chromatic aberration, polarization, and active shutter, which are commonly referred to as color separation, light separation, and time division.

Color difference type 3D technology Color difference type 3D technology, English for Anaglyphic 3D, with the use of passive red - blue (or red - green, red - blue) filter 3D glasses. This technology has the longest history, the imaging principle is simple, the implementation cost is quite low, the cost of glasses is only a few dollars, but the 3D picture effect is also the worst. The color difference type 3D first separates the spectral information from the rotating filter wheel, and uses different color filters to filter the screen, so that one picture can produce two images, and each human eye sees different images. This method is easy to make the screen edge color cast.

Polarization type 3D technology Polarization type 3D technology is also called polarization type 3D technology. English is Polarization 3D, and passive polarized glasses are used. The polarizing 3D technology has better image quality than the color difference, and the cost of the glasses is not too high. At present, more cinemas use this kind of technology, but the display device has higher brightness requirements. On LCD TVs, applying polarized 3D technology requires TVs with refresh rates above 240Hz.

Active shutter 3D active shutter 3D technology, English for Active Shutter 3D, with active shutter 3D glasses. This kind of 3D technology is most widely used on TVs and projectors. It has relatively large resources and excellent image effects. It is highly recommended and adopted by many manufacturers, but its matching 3D glasses are expensive. At present, 3D TVs, including LG, Samsung, Panasonic, Skyworth and other brands, use active shutter 3D technology.