3D visual system
3D technology classification can be divided into two categories: glasses type and naked eye type. Glasses-free 3D requires the use of lenses, gratings, lasers, and other equipment, and is mainly used in public business occasions. Miniaturized 3D displays will be applied to portable devices such as mobile phones, and 3D vision can be generated by viewing light in different directions depending on the distance between human eyes. Large-scale LED display screens cannot form true naked-eye 3D functions because the light of the LED light-emitting tube is divergent. Some scientific research institutions have carried out research on adding a refractive film in front of the LED display, which slightly formed a certain naked-eye 3D effect. , But the viewing angle, distance, and field of view have very large limitations and are not of practical value. According to these characteristics of 3D display, in the field of household and civil consumption, whether it is a monitor, a projector, a TV or even an LED display, it needs to be used with 3D glasses. As a leading LED display provider in the country, Mermaid Optoelectronics, with its consistent leading innovation and development capabilities, provides users with the most suitable 3D display solutions for LED displays. The company’s 3D display control solutions mainly adopt active shutter 3D imaging technology.
◉ Active shutter 3D imaging principle
Active shutter 3D technology mainly relies on liquid crystal glasses to achieve stereo imaging. Its lenses are essentially two LCD screens that control on/off separately. The liquid crystal layer in the eye has two states, black and white, and it is usually displayed as White is the transparent state, and it will turn black after power on. A signal transmitter is used to achieve precise synchronization between the 3D glasses and the screen. Generally speaking, the active shutter 3D technology realizes the imaging of 3D stereoscopic images through the continuous high-speed on/off state of the lens. The advantages of active shutter 3D technology: less afterimages, outstanding 3D effects, full HD 3D effect output, relatively low screen cost. You only need to update the refresh rate to 120 Hz to import this technology.
◉ System structure
◉ Solution equipment support
Mermaid Optoelectronics has been researched and developed to realize an active shutter 3D display on a common LED display. The basic principle is: The video source in the left and right format or the top and bottom format is played on the computer monitor, the refresh frame rate is 60Hz, the frequency is multiplied to 120Hz by the 3D splicing processor, the left and right eye data are multiplied and transmitted to the 3D sending card, and the 3D sending card is converted for reception The display data used by the card, and the left and right eye data switching signal is sent to the 3D glasses synchronizer. On the ordinary LED display, the number of loading points of the receiving card is reduced to meet the requirement of 120Hz frame rate. In addition, because of the LED display The characteristics of the screen, the receiving card will increase the display refresh rate above 1920H-3840Hz, so that there is no flicker when watching 3D effects. The advantage is that the cost of the LED display is the same as that of the ordinary LED display, and it does not increase the cost of display production and installation. Video signal processing and LED control system technology are mature. The use of 2.4GH 3D synchronizer and glasses can avoid the shortcomings of infrared glasses such as short distance and fear of blocking. Configure 3D splicing processor, LED display 3D sending card, and LED display receiving card according to the number of display pixels: 1. If the display screen points are less than 1280*800 points, use a two-in-one video processing transmitter and an appropriate number of ordinary receiving cards to complete the 3D display. 2. If the width of the display screen is greater than 1280 dots, or the height is greater than 800 dots, a 3D splicer needs to be added. According to the number of pixels, a 3D splicer with 2 stitches, 4 stitches, or 8 stitches is used. After the splicer is connected to multiple 3D four-port sending cards or 8-port sending cards, each sending card can control 1.3 million to 2.5 million points. 3. The display adopts a receiving card that is consistent with the ordinary display. When using 3D, in order to ensure a higher refresh rate, it is recommended that the loading width of the receiving card be reduced by half than that of the ordinary display.
Shenzhen Mermaid Optoelectronics Co., Ltd.
ADD: No. 2 Baopu Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen TEL: 15986632162 Email: 973867709@qq.com Website：www.mryled.com
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