In modern electronic devices, the display screen is an important interface for human-computer interaction. With the development of science and technology, display screen technology is also constantly improving. Among them, liquid crystal display (LCD) and LED display are two mainstream display technologies.

COB is chip on board, which is a different chip packaging technology, all chips are directly integrated and packaged on a special PCB board. GOB is glue on board, which is used to obtain a high protection LED display, which is a new technology similar to module packaging.

Wireless LED display is based on WEB information service technology through built-in high-performance GSM, GPRS, CDMA, 3G and other data transmission modules, using GSM/GPRS/CDMA mobile communication network, and remotely and real-time control and management of LED display through the control center.

There are two design methods for energy saving of led display: one is equiping led display with light sensor to adjust brightness. the other is using common cathode energy saving led display with energy saving IC and low votage power supply.

Due to the different raw material IC and chip, product specifications, supporting system and led brands, LED display has different prices.

Common cathode" refers to the use of common cathode power supply to power the LED display , that is, the R, G, B (red, green, blue) of the LED lamp beads are separated for power supply, and the current and voltage are accurately allocated to the R, G, B lamp beads.