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In recent years, with the popularization of LED lighting and the expansion of LED display applications, the market has also put forward new requirements for LED packaging technology. Let us look at the gratifying achievements in the field of LED packaging.
In-line three-in-one three-in-one plug-in is an upgrade product of the current in-line product. It does not change the packaging process of the traditional in-line lamp, but breaks through the product structure and combination, and RGB is enclosed in one lamp, using four Lamp foot. The traditional full color requires three single lamps as a phase point. Now, as long as one single lamp can achieve the same effect, the production and material costs are greatly reduced, and the product has excellent price competitiveness. The outdoor in-line three-in-one solves the dilemma that the user's display performance and weather resistance cannot be combined, and the industry has seen the dawn of LED display packaging technology innovation.
The piranha piranha LED is a package, square, transparent resin package, four pins, and a missing LED at the negative pole. The piranha is an astigmatic LED with a luminous angle greater than 120 degrees and a high luminous intensity. And can withstand more power. There are more brake lights and turn signals for the car. It is said that this kind of LED immediately attracted everyone's attention when it was just born. Its development trend is as fierce as the piranha. Another way of saying it is because it looks like a piranha in the Amazon.
The piranha series display is a three-in-one entangled lamp between the traditional straight-line lamp and the traditional indoor surface-mounted lamp. Compared with the traditional outdoor 246, 346 straight-line lamp, the piranha series 5353 High brightness, excellent white balance, large viewing angle, red, green and blue wick synchronization, gold wire bonding, low failure rate, these are the biggest highlights of the piranha series. The full-color display outdoor protection level of the piranhas 5353 can reach IP65 or above. From the front/side, it eliminates the phenomenon that the 246, 346, and 546 lamp beads have not been solved. The heat dissipation is better than that of the outdoor 3528, 5050 and other three-in-one lamp beads. According to industry insiders, the market prospect of outdoor triads has been more promising than the traditional in-line lamps and stickers.
Cob
The chip on board (ChipOnBoard, COB) process first covers the wafer placement point with a thermally conductive epoxy resin (usually an epoxy resin doped with silver particles) on the surface of the substrate, and then directly places the silicon wafer on the surface of the substrate and heats it to silicon. The sheet is firmly fixed to the substrate, and then an electrical connection is directly established between the silicon wafer and the substrate by wire bonding.
If the bare chip is directly exposed to the air, it is susceptible to contamination or man-made damage, affecting or destroying the function of the chip, so the chip and the bonding wire are encapsulated by glue. This package is also referred to as a soft encapsulation.
COG
The LED packaging factory has completed the integrated packaging technology that can use different substrates. At present, the dual-throw sapphire substrate is used. Wang Qilong, chairman of Hongqi, pointed out that COG technology can be used to mark LED dies on different substrate materials according to customer needs. The newly developed sapphire substrate integrated packaging technology can increase the brightness of 30. This COG product seals the LED on both sides of the glass or sapphire board. Because the color of the intermediate substrate is transparent, the light of the LED will be more uniform, and the product is omitted. The stent process can reduce the cost of the stent product and simplify the process.