LED display screen components include LED light-emitting diodes, PCB boards, LED driver chips, operating systems, power supplies, LED kits, LED display screen cabinets, etc.
Detailed analysis:
1. LED light-emitting diodes
By package:
Outdoor LED:
546 (thickness * width * height) for outdoor P12.5, P14, P16, P20 and above
346 (thickness * width * height) for outdoor P10, P12
Indoor LED: mainly 0805 1206 0603
Surface mount three-in-one; Surface mount three-in-one; Sub-surface mount module; High power type.
Wavelength λ (nm) Brightness (mcd) Chip size (mil) Common brands
Red R 625-630 350-500 12 Guanglei, Sanan, AXT
Green G 520-525 1600-2000 14 AXT, Shimei, Silan
Blue B 465-470 400-500 14 Nichia, CREE, Silan
Remarks: Brightness R:G:B=3:6:1
Several brands: Osram from Germany, Lumen, CREE, AXT from the United States, Guangjia, Guolian (FPD), Dingyuan (TK), Huashan (AOC), Hanguang (HL), Edison, Guanglei (ED) from Taiwan, Seoul from South Korea, Nichia and Toshiba from Japan, Dalian Lumei, Fudi, Sanan, Hangzhou Silan Mingxin, Imitation Nichia from the mainland
2. PCB board (the copper foil thickness in the board is more than 50um)
The main thickness of the double-sided board is 1.6mm
The main thickness of the four-sided board is 2.0mm
3. Driver chip
The driver chips include Toshiba TB62726 from Japan, MBI5026 and MBI5024 from Taiwan, and 74C595, 8310, 4953 from China, etc.
4. The operating system (software) can be divided into synchronous card and asynchronous card (can be used offline)
Commonly used: Lingxingyu, Depuda
Can be calibrated point by point: Zhongqing, Pinrui
5. Power supply
Also 5V 30A or 5V 40A, mainly Changzhou Chuanglian, Shanghai Hengfu, Taiwan Mingwei 5V 60A.
6. LED kit
The PC kit also adds lead for environmental protection, but it should be moderate, lead is toxic.
7. LED display cabinet
Mainly fully waterproof or simple; whether with aviation head, thickness ranging from 70-90cm; cold-rolled plate or aluminum alloy.