LED screen circuit board, generally composed of lamp board and driver board. Currently on the market there are two kinds of design programs, one is the lamp and drive one, one is the lamp and drive separation. In this article, LCF editorial to explain to you what is the lamp and drive one and what is the lamp and drive separation.

Lamp drive unity: LED lights and driver IC all in a PCB board, IC in the front of the PCB, eliminating the need for copper insertion.

Lamp drive separation: LED in an independent PCB board, driver IC in another PCB board, the two PCB boards between the use of rows of pins and rows of female pairs of insertion for signal connection.

Comparison of lamp-driver integration and lamp-driver separation:

1, from the cost point of view: the cost of the lamp drive a little lower.

2, from the maintenance point of view: the lamp drive separation is easy to repair, because he can replace each other to detect, and lamp drive separation lamps are concentrated together, it is easy to change the lamp.

3, from the point of view of heat dissipation, light drive separation is more conducive to heat dissipation.

Usually use the lamp drive separation has the following reasons:

First: LED display is plug-in LED, LED foot affects the normal placement of the back driver IC, so the use of light drive separation

Second: LED screen pitch is too small, in the electronic design affects the PCB board line routing, the use of light drive separation can increase the PCB board wiring area

Third: conducive to heat dissipation without affecting the LED display effect, such as the use of light drive one, when the LED light density is very high, the driver IC work heat will be very high, at this time the driver IC heat will be through the PCB directly affects the IC of the LED lights, so that the LED light color changes. The use of lamp driver separation will not occur.

It is worth noting that the general indoor scanning screen (because the number of chips is small) with a relatively large number of lamps drive (cost savings), while the outdoor LED display screen is usually used in the form of lamps drive separation, in order to extend the screen effect and life.