Production Process Of LED Backlighting
May 13, 2022
What are the production processes of LED backlighting and its classification? What are the main tapes of backlighting and its applicable light sources? Partners who want to learn can take a look with me.
LED backlight is a point light source whose structure is basically the same as CCFL backlight, and CCFL is a line light source. From the long-term trend, LED backlight technology as a replacement technology products exist will certainly slowly spread.
Main production process.
Cleaning: the use of ultrasonic cleaning PCB or LED wire frame, and dry.
Assembly: in the LED chip (large wafer) bottom electrode prepared on the silver glue expansion, the expansion of the chip (large wafer) placed on the stab crystal stage, under the microscope with a stab crystal pen will be installed one by one in the PCB or LED holder corresponding pads, followed by sintering to make the silver glue curing.
Encapsulation: The LED cores and solder lines are protected by epoxy through dispensing. Dispensing on the PCB board has strict requirements on the shape of the cured adhesive, which is directly related to the brightness of the finished backlight. This process will also undertake the task of dispensing the fluorescent powder (white LED).
