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<p>At present, the production technology of <a href="https://www.cowlightbulbs.com/led-filament-bulb" rel="noopener noreferrer" target="_blank"><strong>led filament bulb</strong></a> is constantly developing, and the performance of filament bulbs gradually meets the lighting needs of consumers. What is the led filament bulb manufacturing process? Let me talk about the production and processing steps of led filament lamps.</p><p><br></p><p>1. Cleaning: Use ultrasonic to clean the PCB or LED filament bulb bracket and dry it.</p><p><br></p><p>2. Mounting: After preparing the electrode at the bottom of the LED die (large wafer) with silver glue, expand it, and place the expanded die (large wafer) on the piercing crystal table, and use a piercing pen under the microscope. Installed one by one on the corresponding pads of the PCB or LED filament bulb holder, and then sintered to cure the silver glue.</p><p><br></p><p>3. Pressure welding: Use an aluminum wire or gold wire welding machine to connect the electrode to the LED die as a lead for current injection. The LED filament bulb is directly mounted on the PCB, generally using an aluminum wire welding machine. (A gold wire welding machine is required to make white light TOP-LED)</p><p><br></p><p>4. Packaging: The LED die and the bonding wires are protected with epoxy by dispensing glue. Dispensing glue on the PCB has strict requirements on the shape of the glue after curing, which is directly related to the brightness of the finished backlight. This process will also take on the task of phosphor (white light LED filament bulb).</p><p><br></p><p>5. Soldering: If the backlight is SMD-LED or other packaged LED filament bulbs, the LED needs to be soldered to the PCB board before the assembly process.</p><p><br></p><p>6. Film cutting: use a punch to die-cut various diffusion films and reflective films required by the backlight.</p><p><br></p><p>7. Assembly: According to the drawing requirements, manually install the various materials of the backlight in the correct position. Finally, it is made into an LED filament bulb.</p><p><br></p><p>The above is the led filament bulb manufacturing process. Jiangmen Cow Lighting Appliance Co., Ltd., is the high end led filament bulb manufacturer. Specialized in manufacturing various of led filament lamps, likes led filament bulb e27, led filament bulb 100w, led filament bulb dimmable, ect.</p>
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