The kind of ball screen
1, watermelon skin LED spherical screen:
The earliest appearance of the market on the screen, commonly known as watermelon spherical screen, which consists of watermelon leather PCB composition, its advantages are intuitive structure, less PCB types, the fatal drawback is the north and south poles (ie latitude 45 ° to North and south 45 ° South) can not play the image normally, so the picture utilization is too low or the image is distorted. The reason is that at present, all the image source pixel arrangements are arranged in rows, and the watermelon skin LED North-South pixel screen pixel arrangement is not arranged in rows, but circled arrangement, and therefore Difficult to display.
2, triangular LED spherical screen:
Flat triangle PCB composed of the ball screen, commonly known as football screen, it overcomes the watermelon ball screen can not play the shortcomings of the North and South Pole, the screen utilization greatly improved. The disadvantage is that more types of PCB, by the pixels for the honeycomb-shaped arrangement of the point spacing can not be too small, the software is also more cumbersome to write.
3, six LED spherical screen:
Is a recently appeared LED quadrilateral PCB spherical screen, was called the six-sided LED screen. Placement closer to the flat LED display, the minimum point spacing and flat LED display similar to the restrictions of little or no limit, so the effect is better than the triangular PCB ball screen is much better. The whole sphere is divided into 6 shapes with exactly the same surface size, and each surface is divided into 4 shape and size of the same unit box, a total of 24 sides. Each cell consists of 16 PCBs with LED lamps soldered on them, and finally they are mounted as a LED spherical screen.