The Production Process of LED Lighting

　　Regardless of how the era develops, the production processes of lighting industry are surprisingly similar. Like China is nothing more than the downstream industry. All the core technologies are basically belonging to Europe, Japan and other countries.

　　1, LED light-emitting principle, when electrons pass through a layer of semiconductor material to stimulate the semiconductor material converts electrical energy into light energy. However, light-emitting ability of a single layer of semiconductor is weak.  So you need to stack up a lot of single layer material and press them into composite materials similar to layer cake, which is the "wafer."

　　Therefore, LED luminous efficiency is determined by the number of layers can be pushed under the same thickness. The thinner the single layer of material is, the more layers can be superimposed, thus the higher luminous efficiency is. The thickness of each layer is now generally only 2-20 microns, which also determines the LED epitaxial wafer production is the most difficult part throughout the production process.

　　2, cutting - LED Core: equivalent to withdraw filament from the tungsten filament materials. The difference is that after cutting the shape of the wafer should be diamond.

　　Because of this special structure of epitaxial wafers, to cut the luminous core in good shape is very difficult. Not only requires a vacuum environment, but also a professional cutting machine. Currently there are only two manufacturers in the world can manufacture this cutting machine.

　　3, put the core into the LED chip: chip is to LED what the lamp holder is to bulb, which is the power supply. "Chip" is a very important component to achieve the desired effect of LED equipment because LED has a high demand on the current.

　　4, packaging LED chips into a luminous body is just like to add lampshade to the filament lamp holder to make the light bulb. Shade can be different according to needs, but the packaging technology determines the lifespan of the luminous body.

　　5, lighting applications: like using the incandescent bulbs, according to the different functions and needs, assemble into different LED products.