Label: 3D display Time division method shading
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2012 is destined to be an extraordinary year, the European Cup has not been exhausted, and the Olympic Games have followed. This has gradually increased the 3D TV with perfect technology, making it the best choice for sports fans to watch the Olympic Games, but It is undeniable that there are still quite a few consumers who don't know what 3D technology is all about. Today, Projection Times Network will introduce you to the most mainstream 3D technology.
First of all, we must understand that 3D TV is so popular with consumers. Why is it? In general, 3D technology has the following advantages that are unmatched by ordinary TVs.
1. Strong stereoscopic effect and vivid picture. Compared with the traditional TV set, the image that the 3D TV can present is no longer limited to the plane, and the size of the picture is no longer constrained by the size of the screen. The audience will see the dolphins swimming around themselves, the birds from the top of the head. Gently passing over, the football is flying towards your door... These scenes are difficult to express in the TVs of the previous plane imaging.
2, 3D TV is the mainstream of future development. People's eyes see three-dimensional scenes in nature, so the ability to reproduce real three-dimensional scenes has always been the ideal of human dreams. At present, Samsung, Sony, LG, Sharp, Panasonic, Hisense, Konka, TCL, Changhong, Skyworth and other TV manufacturers have launched 3D products. 3D TV will become the mainstream of future development, and the development prospects are immeasurable.
3, can be compatible with 2D and 3D pictures, easy to convert. 3D TV does not use a brand new screen. It only adds a structure that supports 3D display on the processing module of the ordinary flat-panel TV. In addition, it adds a 3D chip that supports 3D decoding and playback, so 3D TV can be compatible with 2D playback. At the same time, the two screens can be quickly and easily converted.
The current 3D display technology can be mainly divided into glasses type and bare-eye type. The glasses type 3D display technology is developed earlier, and the solution is relatively mature. It has been applied in the commercial field for many years, but the glasses type 3D TV needs to wear customized 3D glasses. It may be inconvenient for consumers who already wear glasses. The naked-eye 3D allows viewers to enjoy the 3D effect because it does not require additional equipment. It is widely welcomed by consumers and the attention of manufacturers. The naked-eye 3D technology is the development direction of 3D display technology.
As we all know, the principle of 3D imaging is to use two cameras to simulate the principle of observing things by the human eye. Two pictures with slightly different angles of view are taken. When playing, the two eyes are output separately. It can be said that 3D shooting is It's not difficult, there is no difference in technology. The hard part is how only the two eyes of the person can only see the picture. Let's take a closer look at the most popular active shutter 3D technology.
Active shutter type 3D technology, also known as time division method shading technology or liquid crystal time sharing technology, is mainly realized by liquid crystal eyes, and its spectacle lens is essentially two liquid crystal screens that can be separately controlled to be turned on/off. The liquid crystal layer has two states, black and white, and is usually displayed in a white or transparent state, and becomes black after being energized. Accurate synchronization between the 3D eye and the screen is achieved by a signal transmitter.
The left and right eye images are played alternately on the display screen. When the left screen is played, the left glasses are opened, the right glasses are closed, and the viewer's left eye sees the picture that needs to be seen by the left eye, and the right eye cannot see anything. When the right eye picture is played, the right eye sees the right picture, and the left eye does not see the picture, so that the left and right eyes respectively see the left and right respective pictures, thereby realizing the 3D stereoscopic effect. This process alternates at least 120 times per second, allowing the human eye to enjoy a coherent but flickering 3D picture, so active 3D display technology requires a screen refresh rate of at least 120 Hz.
Of course, there are still many imperfections in China's 3D display technology. For example, it is easy to cause eye fatigue, dizziness, nausea and other symptoms, or most of them need to wear heavy glasses, expensive, etc., which are nowadays Tricky problem.
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