There are two main forms of bare chip technology: one is COB technology, and the other is flip chip technology (Flip Chip). In production, the COB chip on board (Chip On Board, COB) process first covers the placement point of the silicon chip with a thermally conductive epoxy resin (generally epoxy resin doped with silver particles) on the surface of the substrate, and then directly places the silicon chip On the surface of the substrate, heat treatment until the silicon chip is firmly fixed on the substrate, then directly establish an electrical connection between the silicon chip and the substrate by wire bonding, and cover it with resin to ensure reliability, during transportation, installation, and disassembly There is no disadvantage of light falling like SMD packaging, and the product reliability is extremely high. The reason why flip chip is called "flip chip" is relative to the traditional gold wire bonding process. The electrodes of the traditional chip connected to the substrate through gold wire bonding face up, while the electrodes of the flip chip face down, which is equivalent to turning the former upside down, so it is called "flip chip". In terms of application, the COB light source module can make the installation and production of the lighting factory easier and more convenient, effectively reducing the application cost.
In general, cob light sources have the following characteristics:
1. Cheap and convenient
2. Stable electrical properties, scientific and reasonable circuit design, optical design, and heat dissipation design;
3. Using heat sink technology to ensure that the LED has an industry-leading thermal lumen maintenance rate (95%);
4. It is convenient for the secondary optical matching of the product and improves the lighting quality. ;
5. High color rendering, uniform luminescence, no spot, healthy and environmentally friendly;
6. The installation is simple and the use is convenient, which reduces the difficulty of lamp design and saves the cost of lamp processing and subsequent maintenance.
Applications: spotlights, street lights, track lights, indoor and outdoor lighting, downlights, track lights, etc.
Shenzhen Aihongyang Lighting Co., Ltd. is a high-tech energy-saving company specializing in the production of COB LED planar light sources. The company has 6 automated production lines with a daily output of 400K. The main advantageous products are LED lighting matrix packaging and LED lighting lamps. The company relies on LED With many years of experience in LED application in the electronic packaging industry, we have a production team developed by experts, masters and senior engineers. Products and services, dedicated to the application of LED T5, T8, T10 fluorescent lamps, LED ceiling lamps, LED bulb lamps, LED spotlights, LED downlights and other lamps; dedicated to LED light sources and products with low light decay and long life services. Continuous innovation in LED application products. The enterprise adheres to the principle of "integrity and sustainability", treats products with monographs, treats customers with sincerity, and acts as a model of honest management with the determination to build a century-old enterprise. Realize the perfect combination of the company's planar light source and traditional lamps, and contribute high-quality and low-cost products to the LED industry.