source:other news release time:2023-05-17 Hits: Popular:led screen wholesaler
a) Cleaning: Ultrasonic cleaning PCB or LED brackets and drying.
b) Loading: Display the bottom electrode at the bottom of the LED tube core (large circle), and expand it after the electrodes of the silver gum, place the expanded tube (large round sheet) on the spine crystal platform, and use the thorns crystal pen under the microscope to use the thorns to the tube core. One by one is installed on the corresponding pads of PCB or LED brackets, and then sintering is performed to curing silver glue.
c) Pressive welding: Use aluminum or gold wire welding machine to connect the electrode to the LED tube core for a lead to inject the current. The LED is directly installed on the PCB and is generally used by aluminum welding machines. (Make white light Top-LED requires a golden wire welding machine)
d) Package: By pointing, protect the LED tube core and welded wire with epoxy. Pointing glue on the PCB plate has strict requirements on the shape of the collagen after curing, which is directly related to the light brightness of the backlight product. This process will also undertake the task of fluorescence powder (white light LED).
e) Welding: If the backlight is SMD-LED or other encapsulated LEDs, the LED needs to be welded on the PCB board before the assembly process.
f) Film: Use the punching mold to cut the various diffusion membranes, reflective membranes, etc. of the back light source.
g) assembly: Manually install the correct position of the various materials of the backlight according to the requirements of the drawing.
H) Test: Check whether the backlight source optoelectronics parameters and the uniformity of outlet are good.
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