How to distinguish the quality of LED panel

Time:2018-10-18 Views:340

How to distinguish the quality of LED panel is a concern of LED panel manufacturers, because the quality of LED panel directly affects the overall quality and performance of LED panel.The editor tells you some ways to distinguish between LED panels.

How to distinguish the quality of LED panel?See material pledge

LED panel board: some LED panel manufacturers use cheap flame retardant paper board or single-sided fiber board as the LED LED PCB circuit board in order to compete with the low price.Because, all glass fiber PCB board too expensive.At the beginning, no difference can be seen in the effect. If you are lucky, you can survive for half a year or eight months. Generally, within one year, the whole LED plate will be broken due to damp, ultraviolet damage, oxidation and other reasons.High quality LED unit board must be made of double-sided fiberglass PCB board. Although the cost is high, the quality is guaranteed.

IC: observe whether the brand of IC device used is consistent.What type of IC, and how many IC enough to affect the quality of the board.Some merchants, in order to save costs, will deliberately reduce the number of IC, or some other brands of IC.IC is different, how can guarantee board performance stability?

Lamp bead and chip: the naked eye sees light, cannot distinguish lamp bead good or bad.You can only rely on a long test, which is what the experts call an aging test.The general practice of small workshop is, before leaving factory, electrify, check LED display screen can operate normally, won‘t pass the aging test of long time.Because they can‘t afford the time and labor costs.

How to distinguish the quality of LED panel?Detailed inspection methods are introduced

How to distinguish the quality of LED panel?

Check the appearance quality of selected materials

Surface PCB sheet and processing quality;

Brand and consistency of IC devices;

Luminous dot array;

Check circuit design specification, PCB wiring meets LED display technology requirements

Check welding quality

Check the patch to see if there is any component missing or mis-sticking, and whether there is a burr or short circuit in the pin of the component.Check whether the welding spot of the straight plug is smooth and round, and whether the plate surface is clean and tidy.Check the smoothness of the luminous dot matrix and ink color consistency.

Electrical test (refer to the procedure of "performance test report")

The consistency of the luminescent lattice tested by circuit current;

PDC test is effective in protecting CEM4953 line drive tube;

Power on test signal transmission capability.

LED display manufacturers, open your eyes!Reject cheap goods, quality is king.