LED electronic display briefly the main production process

LED electronic display uses a low-voltage scan driver with low power consumption, long life, low cost, high brightness, large viewing angle, viewing distance, waterproof, specifications varieties, etc., to meet a variety of different scenarios demand, prospects are very bright, is recognized as the most potential for growth is the fastest growing market for LED applications. In the future the demand for new large-scale sporting events, etc., will promote the development of large-scale LED display. In addition, has erected a large LED display screen every 10 years after the first wave of replacement will be, with the improvement of people's living standards, outdoor led display will be gradually used in various industries.
The following is a brief introduction of the main LED electronic display production process:
a) Cleaning: ultrasonic cleaning PCB or LED support, and drying.
b) mounting bracket: the LED die (wafer) bottom electrode silver paste prepared after the expansion, the die (wafer) after the expansion thorn crystal placed in the table, under the microscope with thorn crystal pen will die mounted on a PCB or LED bracket corresponding pad, followed by sintering the silver adhesive curing.
c) bonding: aluminum wire or a gold wire electrode connected to the LED die to leads for current injection. LED mounted directly on the PCB, and the general use of aluminum wire welder. (Making white TOP-LED need gold welder)
d) Packaging: By dispensing with epoxy to the LED die and wire bonders protected. PCB board dispensing, the shape of the colloid cured, there are strict requirements, which is directly related to the brightness of the backlight of the finished product. This process will also assume the point of phosphor (white LED) task.
e) Welding: If the backlight is SMD-LED or other encapsulated LED adoption in the assembly process, you need to LED soldered to the PCB.
f) cutting film: punch die backlight required for a variety diffusion film, reflective film.
g) assembly: According to drawings, various backlight manually install the correct material position.
h) Test: Check backlight optical parameters and light uniformity is good.